Hollow component inner mold and hollow component preparation method

Abstract

The invention discloses a hollow component inner mold and a hollow component preparation method, and relates to the technical field of prefabricated parts. A hollow inner mold is defined by the deformable coating layer; the number of the traction pieces is multiple, all the traction pieces are arranged on the inner side of the hollow inner mold or all the traction pieces are arranged in the deformable coating layer in a penetrating mode, the traction pieces extend in the first direction of the hollow inner mold, and the traction pieces are used for applying or removing tensioning force of the hollow inner mold in the first direction so that the side wall of the hollow inner mold can be tensioned or shrunk in the second direction. The first direction is different from the second direction. The tensioning force of the hollow inner mold in the first direction is applied or removed through the traction piece so that the hollow component can be formed through pouring, the hollow inner mold can be separated from the hollow component, the demolding convenience and efficiency of the hollow component are improved while the size stability of the hollow component is guaranteed, the hollow component inner mold can be repeatedly used, and the production cost is reduced. And the manufacturing cost of the hollow component is reduced.

Description

Technical Field

[0001] This application relates to the field of precast component technology, and more specifically, to a hollow component inner mold and a method for preparing hollow components. Background Technology

[0002] Traditionally, when processing hollow structural components, such as hollow piles and hollow floor slabs, an inner mold is placed inside a reinforcing cage, and a layer of material that facilitates demolding, such as foam or pearl cotton, is wrapped around the outer surface of the inner mold. After the concrete component is processed, the inner mold is removed. However, the demolding material is damaged during the demolding process, increasing costs. Furthermore, the demolding resistance is relatively high, making demolding convenient. Since the demolding material is a compressible flexible material, the dimensional instability of the inner mold during the hollow component forming process results in a large tolerance range for the inner hole, making dimensional control difficult.

[0003] Therefore, how to improve the ease and efficiency of demolding hollow components while ensuring dimensional stability and saving costs has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide an inner mold for hollow components, so as to improve the convenience and efficiency of demolding hollow components while ensuring the dimensional stability of hollow components and saving costs.

[0005] Another objective of this application is to provide a method for preparing a hollow component using the aforementioned hollow component inner mold.

[0006] To achieve the above objectives, this application provides the following technical solution:

[0007] A hollow component inner mold, comprising:

[0008] A deformable covering layer, wherein the deformable covering layer is arranged to form a hollow inner mold;

[0009] The traction member is a plurality of such traction members, each of which is disposed on the inner side of the hollow inner mold or each of the traction members passes through the deformable covering layer, and the traction members extend along a first direction of the hollow inner mold. The traction members are used to apply or remove tension force on the hollow inner mold along the first direction so that the sidewall of the hollow inner mold can deform along a second direction, the first direction being different from the second direction.

[0010] Optionally, in the aforementioned hollow component inner mold, the deformable covering layer has a hollow structure, and the traction member passes through the hollow region of the deformable covering layer; and / or,

[0011] The traction component and the hollow inner mold are integrally formed.

[0012] Optionally, in the hollow component inner mold described above, at least a portion of the hollow inner mold is made of flexible material.

[0013] Optionally, in the above-mentioned hollow component inner mold, the flexible material includes one of soft material and elastic material.

[0014] Optionally, in the above-mentioned hollow component inner mold, the soft material includes at least one of reinforced soft PVC roll material, reinforced soft TPO roll material, high-density polyethylene material, special reinforced rubber material, reinforced putty and plastic resin.

[0015] Optionally, in the above-mentioned hollow component inner mold, the elastic material includes at least one of rubber, silicone, polyurethane elastomer, high-resilience TPU sheet and high-resilience TPE sheet.

[0016] Optionally, in the hollow component inner mold described above, the deformable covering layer includes multiple stacked deformable layers, and each of the deformable layers has a different elastic modulus.

[0017] Optionally, in the above-mentioned hollow component inner mold, the elastic modulus of each of the deformable layers increases sequentially from the outer side of the deformable covering layer to the inner side of the deformable covering layer.

[0018] Optionally, the hollow component inner mold further includes end molds disposed at both ends of the hollow inner mold, and the end molds are provided with positioning holes for positioning the traction component.

[0019] Optionally, in the aforementioned hollow component inner mold, the traction member is fixedly connected to the end mold; or,

[0020] The traction component is connected to the end mold via a tension adjustment mechanism, which is used to adjust the tension of the traction component.

[0021] Optionally, in the hollow component inner mold described above, the tension adjustment mechanism includes a threaded sleeve, which is located on the side of the end mold away from the hollow inner mold, and the threaded sleeve is threadedly engaged with the traction member.

[0022] Optionally, in the above-mentioned hollow component inner mold, the traction component includes one or more composites of steel strand, steel cable, chain, nylon rope, polyester rope, aramid rope, polypropylene rope, rubber belt, belt, and fiber rope.

[0023] A method for preparing a hollow component, using a hollow component inner mold as described in any of the preceding claims, includes the following steps:

[0024] Place the hollow component inner mold, put the hollow inner mold into the forming mold of the hollow component, and connect the traction component to the tensioning device;

[0025] The tensioning member is used to apply a tensioning force to the tensioning member along the first direction, so that the sidewall of the hollow inner mold is tensioned along the second direction.

[0026] Pouring material: The material is poured into the molding mold and then cured.

[0027] Demolding is performed by removing the tension force on the traction member along the first direction, so that the sidewall of the hollow inner mold has a contraction force along the second direction, and then applying a tension force to the hollow inner mold along the first direction or at an acute angle to the first direction.

[0028] The hollow inner mold provided in this application is formed by using a deformable covering layer. Multiple traction members extending along a first direction of the hollow inner mold are inserted inside the hollow inner mold or within the deformable covering layer. Tension force is applied to the hollow inner mold along the first direction through these traction members, causing the sidewalls of the hollow inner mold to be tensioned along a second direction, thus enabling the hollow inner mold to support materials such as concrete. When demolding is required, the tension force applied to the hollow inner mold along the first direction is released through the traction members, allowing the sidewalls of the hollow inner mold to contract along the second direction, thereby facilitating the removal of the hollow inner mold. As can be seen from the above examples, the hollow component inner mold provided in this application applies or removes the tension force of the hollow inner mold along the first direction through the traction member so as to cast and form a hollow component, and can remove the hollow inner mold from the hollow component. While ensuring the dimensional stability of the hollow component, it improves the convenience and efficiency of demolding the hollow component, and makes the hollow component inner mold reusable, thereby reducing the manufacturing cost of the hollow component.

[0029] The technical features mentioned above, those to be mentioned below, and those shown individually in the accompanying drawings can be combined arbitrarily, provided that the combined technical features are not contradictory. All feasible combinations of features are the technical content explicitly described herein. Any one of the multiple sub-features contained in the same statement can be applied independently, without necessarily being applied together with other sub-features. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of the hollow inner mold and the traction component provided in Embodiment 1 of this application;

[0032] Figure 2 This is a schematic diagram of the structure of the hollow inner mold and the traction component provided in Embodiment 2 of this application;

[0033] Figure 3 This is a schematic diagram of the structure of the hollow inner mold and the traction component provided in Embodiment 3 of this application;

[0034] Figure 4 This is a schematic diagram of the structure of the hollow inner mold and the traction component provided in Embodiment 4 of this application;

[0035] Figure 5 This is a schematic diagram of the structure of the hollow inner mold and the traction component provided in Embodiment 5 of this application;

[0036] Figure 6 This is a structural schematic diagram of the hollow component provided in Embodiment 1 of this application;

[0037] Figure 7 An exploded view of the hollow component provided in Embodiment 1 of this application;

[0038] Figure 8 This is a structural schematic diagram of the hollow component provided in Embodiment 2 of this application;

[0039] Figure 9 This is an exploded view of the hollow component provided in Embodiment 2 of this application;

[0040] Figure 10 This is a schematic flowchart illustrating the hollow component preparation method provided in the embodiments of this application.

[0041] Among them, 100 is the hollow component inner mold, 10 is the deformable covering layer, 11 is the hollow inner mold, 12 is the flexible material, 13 is the deformable layer, 20 is the traction component, 30 is the end mold, 31 is the positioning hole, 32 is the tension adjustment mechanism, 321 is the threaded sleeve, and 200 is the hollow component. Detailed Implementation

[0042] The core of this application is to provide an inner mold for hollow components, which can improve the convenience and efficiency of demolding hollow components while ensuring the dimensional stability of hollow components and saving costs.

[0043] Another core aspect of this application is to provide a method for preparing a hollow component using the aforementioned hollow component inner mold.

[0044] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0045] Traditionally, when processing hollow structural components, such as hollow piles and hollow floor slabs, an inner mold is placed inside a reinforcing cage, and a layer of material that facilitates demolding, such as foam or pearl cotton, is wrapped around the outer surface of the inner mold. After the concrete component is processed, the inner mold is removed. However, the demolding material is damaged during the demolding process, increasing costs. Furthermore, the demolding resistance is relatively high, making demolding convenient. Since the demolding material is a compressible flexible material, the dimensional instability of the inner mold during the hollow component forming process results in a large tolerance range for the inner hole, making dimensional control difficult.

[0046] Therefore, such as Figure 1 As shown in the figure, this application discloses a hollow component inner mold 100, including a deformable covering layer 10 and a traction member 20. The traction member 20 applies or removes tension force along a first direction on the hollow inner mold 11 to cast and form a hollow component 200. The hollow inner mold 11 can also be removed from the hollow component 200. This improves the convenience and efficiency of demolding while ensuring the dimensional stability of the hollow component 200, and allows the hollow component inner mold 100 to be reused, reducing the manufacturing cost of the hollow component 200.

[0047] The following will combine Figures 1 to 9 The hollow component inner mold 100 disclosed in the embodiments of this application will be explained and described in detail.

[0048] Among them, such as Figures 1 to 5 As shown, the deformable covering layer 10 can be configured to form a hollow inner mold 11, and the cross-sectional shape of the hollow inner mold 11 can be a polygon such as a triangle, rectangle, or pentagon, or a cross-sectional shape with an arc surface such as a circle, which can be determined according to actual needs. At the same time, the hollow inner mold 11 can extend along the axial direction of the hollow component 200 so as to form a cavity structure in the area enclosed by the hollow inner mold 11, thereby forming the hollow structure of the hollow component 200.

[0049] like Figures 1 to 5 As shown, multiple traction components 20 can be used; that is, there can be three, four, or more traction components 20. Figure 1 , Figure 2 and Figure 5As shown, each traction member 20 can be disposed on the inner side of the hollow inner mold 11, so that the tension force of the hollow inner mold 11 along the first direction can be applied or unloaded through the traction member 20, thereby allowing the traction member 20 to drive the side wall of the hollow inner mold 11 to be tensioned or contracted along the second direction, so that the side wall of the hollow inner mold 11 can support or detach from materials such as concrete. Of course, as Figure 3 and Figure 4 As shown, each traction member 20 can also be inserted into the deformable covering layer 10, and the traction member 20 can extend along the first direction of the hollow inner mold 11, so as to apply or remove the tension force of the hollow inner mold 11 along the first direction through the traction member 20, thereby enabling the traction member 20 to drive the side wall of the hollow inner mold 11 to be tensioned or contracted along the second direction, so that the side wall of the hollow inner mold 11 can support or detach from materials such as concrete.

[0050] It should be noted that in the above embodiments, the first direction and the second direction are two different directions. The first direction is the axial direction of the hollow inner mold 11, and the direction of the tension force applied to the traction member 20 can have a certain angle with the first direction, so that the direction of the component of the tension force is parallel to the axial direction of the hollow inner mold 11. Of course, the direction of the tension force can also be parallel to the first direction, that is, the direction of the tension force is parallel to the axial direction of the hollow inner mold 11, thereby improving the tensioning effect of the hollow inner mold 11. The second direction can be the direction perpendicular to the side wall of the hollow inner mold 11.

[0051] When preparing the hollow component 200, a tension force along the first direction can be applied to the hollow inner mold 11 by the traction member 20, so that the side wall of the hollow inner mold 11 can be tensioned along the second direction. At this time, the side wall of the hollow inner mold 11 can resist the gravity or lateral pressure of materials such as concrete, thereby supporting the materials such as concrete to form the hollow component 200. When the hollow component needs to be demolded after curing, the tension force applied to the hollow inner mold 11 along the first direction can be removed by the traction member 20, so that the side wall of the hollow inner mold 11 can shrink along the second direction. At this time, the side wall of the hollow inner mold 11 can be separated from the inner cavity wall of the hollow component 200, thereby making it easier to pull out the hollow inner mold 11, thus improving the demolding convenience and efficiency of the hollow component 200. At the same time, the hollow component inner mold 100 can be reused, reducing the manufacturing cost of the hollow component 200.

[0052] In some embodiments, such as Figure 2As shown, at least a portion of the hollow inner mold 11 can be made of flexible material 12. That is, in the circumferential direction of the hollow inner mold 11, a portion of the area can be made of flexible material 12, while other areas can be made of rigid deformable materials such as shape memory metal. Of course, all areas can also be made of flexible material 12. When a portion of the hollow inner mold 11 in the circumferential direction is made of flexible material 12, the flexible material 12 can be located on the sidewall of the hollow inner mold 11 so that the tension force of the hollow inner mold 11 along the first direction can be applied or removed by the traction member 20, allowing the sidewall of the hollow inner mold 11 to be tensioned or contracted along the second direction.

[0053] In some embodiments, the flexible material 12 may include one of a soft material and an elastic material, that is, the flexible material 12 may be a soft material or an elastic material. The soft material may include at least one of reinforced flexible PVC rolls, reinforced flexible TPO rolls, high-density polyethylene material, specially reinforced rubber material, reinforced putty, and plastic resin; that is, the soft material may be one of reinforced flexible PVC rolls, reinforced flexible TPO rolls, high-density polyethylene material, specially reinforced rubber material, reinforced putty, and plastic resin. Of course, the soft material may also be a composite of multiple of reinforced flexible PVC rolls, reinforced flexible TPO rolls, high-density polyethylene material, specially reinforced rubber material, reinforced putty, and plastic resin. Preferably, the soft material can be reinforced soft PVC or TPO roll material, giving the hollow inner mold 11 good tensile strength, flexibility, and durability. It also makes the surface of the hollow inner mold 11 smoother, facilitating demolding, and is suitable for large, complex-shaped precast component inner molds, such as box girders, pier column cavities, or irregularly shaped components. The elastic material can include at least one of rubber, silicone, polyurethane elastomer, high-resilience TPU sheet, and high-resilience TPE sheet; that is, the elastic material can be one of these materials, or a combination of multiple materials. Preferably, silicone is used as the elastic material, giving the hollow inner mold 11 excellent elasticity, flexibility, and tear resistance, with a high surface finish and good demolding performance, easily handling complex precast components, such as inverted structures and other irregularly shaped components.

[0054] In some embodiments, such as Figure 5As shown, the deformable covering layer 10 can also be composed of multiple stacked deformable layers 13, that is, the number of deformable layers 13 can be two, three or more, and each deformable layer 13 is stacked to form the deformable covering layer 10. At the same time, each deformable layer 13 can adopt a different elastic modulus. Among them, the elastic modulus of each deformable layer 13 increases sequentially from the outer side to the inner side of the deformable covering layer 10, so that the elastic modulus of the outermost deformable layer 13 of the deformable covering layer 10 is smaller, so as to ensure the flatness of the inner cavity wall of the hollow component 200. At the same time, through the deformable layer 13 with a larger elastic modulus located on the inner side of the deformable covering layer 10, the deformable covering layer 10 can have a restoring elastic force to detach from the inner cavity wall of the hollow component 200 after the support is released, so as to pull the hollow inner mold 11 out from the inner cavity wall of the hollow component 200. It should be noted that the outer side of the deformable coating layer 10 refers to the side that is in contact with materials such as concrete, while the inner side of the deformable coating layer 10 refers to the side that is away from materials such as concrete.

[0055] In some embodiments, such as Figure 5 As shown, the deformable covering layer 10 can be composed of two stacked deformable layers 13, and the elastic modulus of the outer deformable covering layer 13 is smaller than that of the inner deformable covering layer 13. Thus, the outer deformable covering layer 13 can ensure the flatness of the inner cavity wall of the hollow component 200. At the same time, the inner deformable covering layer 13 can provide a restoring elastic force to separate from the inner cavity wall of the hollow component 200 after the support is released, so that the hollow inner mold 11 can be extracted from the inner cavity wall of the hollow component 200.

[0056] In some embodiments, such as Figure 1 , Figure 2 and Figure 5 As shown, each traction member 20 can be disposed on the inner side of the hollow inner mold 11, and each traction member 20 can be spaced apart along the circumferential direction of the hollow inner mold 11. When the hollow inner mold 11 has a polygonal cross-section, each traction member 20 can be disposed at the corner of the hollow inner mold 11, so that each traction member 20 can apply or release the tension force along the first direction at the corner of the hollow inner mold 11, thereby causing the sidewalls on both sides of the corner of the hollow inner mold 11 to be tensioned or contracted along the second direction; when the hollow inner mold 11 has a circular or other cross-sectional shape with an arc surface, each traction member 20 can be continuously distributed along the circumferential direction of the hollow inner mold 11, so that each traction member 20 can apply or release the tension force along the first direction at the sidewall of the hollow inner mold 11, thereby causing the sidewall of the hollow inner mold 11 to be tensioned or contracted along the second direction.

[0057] In some embodiments, when the hollow inner mold 11 has a polygonal cross-section, traction members 20 can be provided at the corners of the hollow inner mold 11. Simultaneously, one or more traction members 20 can be provided on the sidewalls of the hollow inner mold 11. This allows each traction member 20 to increase the supporting force of the sidewalls of the hollow inner mold 11 when applying tension force along the first direction, preventing deformation of the sidewalls of the hollow inner mold 11 due to pressure from materials such as concrete, thus affecting the hollow structure forming quality of the hollow component 200. Furthermore, when each traction member 20 releases the tension force along the first direction, the sidewalls of the hollow inner mold 11 can quickly detach from the inner wall of the hollow component 200, improving the convenience and efficiency of demolding.

[0058] In some embodiments, the traction member 20 may be a separate structure from the hollow inner mold 11, that is, the traction member 20 may be located inside the hollow inner mold 11 and fit against the inner side of the hollow inner mold 11, such as... Figure 1 , Figure 2 and Figure 5 As shown, the hollow inner mold 11 can be made of elastic material. When the traction member 20 applies a tension force along the first direction, the traction member 20 is tensioned and can abut against the hollow inner mold 11, so that the side wall of the hollow inner mold 11 can be tensioned along the second direction, thereby allowing the hollow inner mold 11 to support materials such as concrete. When the tension member 20 releases the tension force along the first direction, the traction member 20 bends and deforms, and the traction member 20 disengages from the hollow inner mold 11, so that the side wall of the hollow inner mold 11 can contract along the second direction under the action of the restoring elastic force, thereby allowing the side wall of the hollow inner mold 11 to detach from the inner wall of the hollow component 200.

[0059] In some embodiments, the traction member 20 may also be integrally formed with the hollow inner mold 11, that is, the traction member 20 may be fixed to the inner side of the hollow inner mold 11, such as... Figure 1 , Figure 2 and Figure 5 As shown. When the traction member 20 applies a tension force along the first direction, the traction member 20 can cause the side wall of the hollow inner mold 11 to be tensioned along the second direction, so that the hollow inner mold 11 can support materials such as concrete; when the traction member 20 releases the tension force along the first direction, the traction member 20 can cause the side wall of the hollow inner mold 11 to contract along the second direction, so that the side wall of the hollow inner mold 11 can be separated from the inner cavity wall of the hollow component 200.

[0060] In some embodiments, such as Figure 3 and Figure 4 As shown, the deformable covering layer 10 can have a hollow structure, and the traction member 20 can be inserted into the hollow area of ​​the deformable covering layer 10. Each traction member 20 can be located in the corner area of ​​the hollow inner mold 11, such as... Figure 3As shown, they can also be continuously or intermittently distributed along the circumferential direction of the hollow inner mold 11, such as... Figure 4 As shown. Meanwhile, the traction component 20 and the deformable covering layer 10 can be a separate structure or an integrally formed structure.

[0061] In some embodiments, such as Figure 3 and Figure 4 As shown, the deformable covering layer 10 adopts a hollow structure, and the traction member 20 and the deformable covering layer 10 can adopt a separate structure. In this case, the outer layer of the deformable covering layer 10 can be made of an elastic material, and the inner layer of the deformable covering layer 10 can be made of a hard deformable material, a soft deformable material, or an elastic material. When the traction member 20 applies tension in the first direction, the traction member 20 is tensioned and can abut against the outer layer of the deformable covering layer 10, so that the outer layer of the deformable covering layer 10 can be tensioned in the second direction, thereby allowing the outer wall of the hollow inner mold 11 to support materials such as concrete; when the tension member 20 releases the tension in the first direction, the traction member 20 bends and deforms, and the traction member 20 detaches from the outer layer of the deformable covering layer 10, so that the outer wall of the hollow inner mold 11 can contract in the second direction under the action of the restoring elastic force of the outer layer of the deformable covering layer 10, thereby allowing the outer wall of the hollow inner mold 11 to detach from the inner wall of the hollow component 200.

[0062] In some embodiments, such as Figure 3 and Figure 4 As shown, the deformable covering layer 10 has a hollow structure, and the traction member 20 can also be integrally formed with the deformable covering layer 10. When the traction member 20 applies a tension force along the first direction, the traction member 20 can at least drive the outer layer of the deformable covering layer 10 to be tensioned along the second direction. That is, the traction member 20 can only drive the outer layer of the deformable covering layer 10 to be tensioned along the second direction, or it can drive the outer and inner layers of the deformable covering layer 10 to be tensioned simultaneously along the second direction, so that the outer wall of the hollow inner mold 11 can support materials such as concrete. When the traction member 20 releases the tension force along the first direction, the traction member 20 can at least drive the outer layer of the deformable covering layer 10 to contract along the second direction. That is, the traction member 20 can only drive the outer layer of the deformable covering layer 10 to contract along the second direction, or it can drive the outer and inner layers of the deformable covering layer 10 to contract simultaneously along the second direction, so that the outer wall of the hollow inner mold 11 can detach from the inner wall of the hollow component 200.

[0063] In some embodiments, such as Figure 6 and Figure 7As shown, the hollow component inner mold 100 may further include end molds 30 disposed at both ends of the hollow inner mold 11 to ensure the flatness of the end face of the hollow component 200. Positioning holes 31 may be provided on the end molds 30 to position the connection between the traction member 20 and the end molds 30. Furthermore, a tensioning shaft may be provided on the side of the end mold 30 away from the hollow inner mold 11, allowing connection to a tensioning device. This enables the tensioning device to apply or remove tension force on the traction member 20 along the first direction through the end mold 30.

[0064] In some embodiments, such as Figure 7 As shown, when the traction components 20 are spaced apart along the circumferential direction of the hollow inner mold 11, the positioning holes 31 can be circular holes adapted to the traction components 20, so that each traction component 20 can be positioned and installed with the end mold 30 respectively; when the traction components 20 are continuously arranged along the circumferential direction of the hollow inner mold 11, the positioning holes 31 can be strip holes or L-shaped holes adapted to multiple traction components 20 at the same time, so that the positioning holes 31 can be positioned with multiple traction components 20 at the same time, thereby realizing the positioning and installation between each traction component 20 and the end mold 30.

[0065] In some embodiments, such as Figure 8 and Figure 9 As shown, the traction member 20 and the end mold 30 can be connected by a tension adjustment mechanism 32, so that the tension of the traction member 20 can be independently adjusted by the tension adjustment mechanism 32, so that the tension of the hollow inner mold 11 along the first direction is controllable and the stability of the hollow inner mold 11 is guaranteed.

[0066] In some embodiments, such as Figure 8 and Figure 9 As shown, the tension adjustment mechanism 32 may include a threaded sleeve 321, which may be located on the side of the end mold 30 away from the hollow inner mold 11. Simultaneously, the end of the traction member 20 connected to the end mold 30 may be provided with a threaded portion, allowing independent adjustment of the tension of the traction member 20 through the threaded engagement of the threaded sleeve 321 with the traction member 20. When the tension of the hollow inner mold 11 along the first direction is large, the threaded sleeve 321 can be rotated counterclockwise to release part of the tension of the traction member 20, thereby reducing the tension of the hollow inner mold 11 along the first direction. When the tension of the hollow inner mold 11 along the first direction is small, the threaded sleeve 321 can be rotated clockwise to increase the tension of the traction member 20, thereby increasing the tension of the hollow inner mold 11 along the first direction. Of course, during demolding, the tension adjustment mechanism 32 can also be used to gradually release the tension, ensuring the stability of the demolding of the hollow inner mold 11.

[0067] Of course, in the above embodiments, when the size of the hollow component 200 is small, the traction component 20 and the end mold 30 can also be fixedly connected by anchors, that is, there is no need to adjust the tension of the hollow inner mold 11 along the first direction.

[0068] It should be noted that, in the above embodiments, the traction component 20 may be composed of one or more of the following composite materials: steel strand, steel cable, chain, nylon rope, polyester rope, aramid rope, polypropylene rope, rubber belt, belt, and fiber rope. That is, the traction component 20 may be one of the following: steel strand, steel cable, chain, nylon rope, polyester rope, aramid rope, polypropylene rope, rubber belt, belt, and fiber rope. Of course, the traction component 20 may also be a composite traction component composed of multiple of the following composite materials: steel strand, steel cable, chain, nylon rope, polyester rope, aramid rope, polypropylene rope, rubber belt, belt, and fiber rope. This is not limited here.

[0069] The hollow inner mold 100 disclosed in this application is formed by enclosing a hollow inner mold 11 with a deformable covering layer 10. Multiple traction members 20 extending along a first direction of the hollow inner mold 11 are inserted inside the hollow inner mold 11 or within the deformable covering layer 10. Tension force is applied to the hollow inner mold 11 along the first direction through the traction members 20, causing the sidewalls of the hollow inner mold 11 to be tensioned along a second direction, thereby enabling the hollow inner mold 11 to support materials such as concrete. When demolding is required, the tension force applied to the hollow inner mold 11 along the first direction is released through the traction members 20, allowing the sidewalls of the hollow inner mold 11 to contract along the second direction, thus facilitating the removal of the hollow inner mold 11.

[0070] The hollow component inner mold 100 disclosed in this application embodiment applies or removes the tension force of the hollow inner mold 11 along the first direction through the traction member 20 so as to cast and form a hollow component 200. The hollow inner mold 11 can be removed from the hollow component. While ensuring the dimensional stability of the hollow component 200, it improves the convenience and efficiency of demolding the hollow component 200, and makes the hollow component inner mold 100 reusable, thereby reducing the manufacturing cost of the hollow component 200.

[0071] like Figure 10 As shown in the embodiments, this application also discloses a method for preparing hollow components, using the hollow component inner mold 100 disclosed in the above embodiments. Therefore, it possesses all the technical effects of the hollow component inner mold 100 described above, which will not be repeated here. The hollow component preparation method may include step S100 of placing the hollow component inner mold, step S200 of tensioning the traction component, step S300 of pouring materials, and step S400 of demolding. The hollow component preparation method disclosed in this application will be explained and described in detail below.

[0072] Step S100: Place the inner mold of the hollow component;

[0073] The hollow inner mold 11 is placed inside the forming mold of the hollow component 200, and the traction member 20 is connected to the tensioning device. Specifically, the traction member 20 is connected and fixed to the end mold 30, and the tensioning shaft of the end mold 30 is connected to the tensioning device, so that the tensioning device applies a tensioning force to the traction member 20 in the first direction through the end mold 30.

[0074] Step S200: Tensioning the traction component;

[0075] Tensioning force is applied to the traction member 20 in the first direction by the tensioning device, so that the side wall of the hollow inner mold 11 is tensioned in the second direction, thereby supporting the pressure of materials such as concrete.

[0076] Step S300: Pour material;

[0077] Concrete and other materials are poured into the molding mold and placed outside the hollow inner mold 11, so that the area enclosed by the hollow inner mold 11 forms a hollow structure of the hollow component 200. After the concrete and other materials are poured, the hollow component 200 is cured to give it a certain strength. It should be noted that the materials can be, but are not limited to, concrete, and can also be cement, etc., depending on the actual needs.

[0078] Step S400: Demolding;

[0079] The tension force on the traction member 20 along the first direction is removed by the tensioning device so that the side wall of the hollow inner mold 11 has a contraction force along the second direction. Then, a tension force is applied to the hollow inner mold 11 along the first direction or at an acute angle to the first direction, so that the hollow inner mold 11 can be pulled out from the hollow member 200.

[0080] It should be noted that the hollow component 200 may also be equipped with a reinforcing cage to improve its tensile strength. When the hollow component 200 is equipped with a reinforcing cage, the hollow inner mold 11 can be placed inside the reinforcing cage so that materials such as concrete can work together with the reinforcing cage to provide load-bearing capacity for the hollow component 200.

[0081] The hollow component preparation method disclosed in this application can be used to prepare hollow components 200 such as precast hollow piles and precast hollow floor slabs. It can also share a tensioning device with precast hollow components to achieve tensioning or shrinking of the hollow inner mold 11, thereby improving the convenience of hollow component 200 preparation and demolding and saving equipment costs.

[0082] The technical features mentioned above, as well as those shown individually in the accompanying drawings, can be combined arbitrarily, provided that the combined technical features are not contradictory. All feasible combinations of features are those explicitly described herein.

[0083] The terms "first" and "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units may include steps or units not listed, but rather not listed.

[0084] The terms "parallel" and "perpendicular" used in this application refer to "basically parallel" and "basically perpendicular" in practical operation. "Basically parallel" can be understood as parallelism with a certain degree of error, and similarly, "basically perpendicular" can be understood as perpendicularity with a certain degree of error.

[0085] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hollow component inner mold, characterized in that, include: A deformable covering layer (10) is provided to form a hollow inner mold (11). The traction member (20) is a plurality of such traction members (20), each of which is disposed on the inner side of the hollow inner mold (11) or each of which is inserted into the deformable covering layer (10). The traction member (20) extends along a first direction of the hollow inner mold (11). The traction member (20) is used to apply or remove the tension force of the hollow inner mold (11) along the first direction so that the sidewall of the hollow inner mold (11) can be tensioned or contracted along a second direction. The first direction is different from the second direction.

2. The hollow component inner mold according to claim 1, characterized in that, The deformable covering layer (10) has a hollow structure, and the traction member (20) passes through the hollow area of ​​the deformable covering layer (10); and / or, The traction component (20) and the hollow inner mold (11) are integrally formed.

3. The hollow component inner mold according to claim 1, characterized in that, At least a portion of the hollow inner mold (11) is made of flexible material (12).

4. The hollow component inner mold according to claim 3, characterized in that, The flexible material (12) includes one of soft materials and elastic materials.

5. The hollow component inner mold according to claim 4, characterized in that, The flexible material includes at least one of reinforced flexible PVC rolls, reinforced flexible TPO rolls, high-density polyethylene material, specially reinforced rubber material, reinforced putty, and plastic resin.

6. The hollow component inner mold according to claim 4, characterized in that, The elastic material includes at least one of rubber, silicone, polyurethane elastomer, high-resilience TPU sheet, and high-resilience TPE sheet.

7. The hollow component inner mold according to claim 1, characterized in that, The deformable covering layer (10) includes a plurality of stacked deformable layers (13), and each of the deformable layers (13) has a different elastic modulus.

8. The hollow component inner mold according to claim 7, characterized in that, The elastic modulus of each of the deformable layers (13) increases sequentially from the outside of the deformable covering layer (10) to the inside of the deformable covering layer (10).

9. The hollow component inner mold according to claim 1, characterized in that, It also includes end molds (30) disposed at both ends of the hollow inner mold (11), and the end molds (30) are provided with positioning holes (31) for positioning the traction member (20).

10. The hollow component inner mold according to claim 9, characterized in that, The traction component (20) is fixedly connected to the end mold (30); or, The traction member (20) is connected to the end mold (30) through a tension adjustment mechanism (32), which is used to adjust the tension of the traction member (20).

11. The hollow component inner mold according to claim 10, characterized in that, The tension adjustment mechanism (32) includes a threaded sleeve (321), which is located on the side of the end mold (30) away from the hollow inner mold (11), and the threaded sleeve (321) is threadedly engaged with the traction member (20).

12. The hollow component inner mold according to any one of claims 1 to 11, characterized in that, The traction component (20) is composed of one or more of the following: steel strand, steel cable, chain, nylon rope, polyester rope, aramid rope, polypropylene rope, rubber belt, belt, and fiber rope.

13. A method for preparing a hollow component, using a hollow component inner mold (100) as described in any one of claims 1 to 12, characterized in that, Including the following steps: Place the hollow inner mold (11) inside the forming mold of the hollow component (200), and connect the traction member (20) to the tensioning device. Tensioning member, by applying a tensioning force to the tension member (20) along the first direction, so that the sidewall of the hollow inner mold (11) is tensioned along the second direction; Pouring material: The material is poured into the molding mold and then cured. Demolding is performed by removing the tension force on the traction member (20) along the first direction, so that the sidewall of the hollow inner mold (11) has a contraction force along the second direction, and then applying a tension force along the first direction or at an acute angle to the first direction to the hollow inner mold (11).

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