Hollow core member inner mold

Abstract

The application discloses a hollow component inner mold, relates to the technical field of prefabricated components, and comprises a deformable coating layer; the deformable coating layer surrounds to form a hollow inner mold; the hollow inner mold can extend along the axial direction of the hollow component; the end face of the two ends of the hollow inner mold is at least partially a tension area; the tension area is used for applying or removing a tension force in a first direction, so that the side wall of the hollow inner mold can be tensioned or contracted in a second direction; the first direction is different from the second direction. The hollow component inner mold provided by the application applies or removes the tension force of the hollow inner mold in the first direction through the tension area of the end face of the two ends of the hollow inner mold, so as to pour to form the hollow component and can be taken out from the hollow component; while the size stability of the hollow component is ensured, the demolding convenience and efficiency of the hollow component are improved, the hollow component inner mold can be repeatedly used, 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 an inner mold for a hollow component. 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. Utility Model Content

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

[0006] A hollow component inner mold, comprising:

[0007] A deformable covering layer is provided to form a hollow inner mold. The hollow inner mold is capable of extending along the axial direction of the hollow component. At least a portion of the end faces at both ends of the hollow inner mold are tensioning regions. The tensioning regions are used to apply or release tension forces along a first direction so that the sidewalls of the hollow inner mold can be tensioned or contracted along a second direction, where the first direction is different from the second direction.

[0008] Optionally, in the hollow component inner mold described above, at least a portion of the hollow inner mold is made of flexible material.

[0009] Optionally, in the aforementioned hollow component inner mold, the flexible material includes one of a soft material and an elastic material.

[0010] 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.

[0011] 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.

[0012] 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.

[0013] 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.

[0014] Optionally, the hollow component inner mold further includes end molds disposed at both ends of the hollow inner mold, and the end molds are connected to the tensioning area of ​​the hollow inner mold.

[0015] Optionally, in the hollow component inner mold described above, a transition connector is provided on the inner side of the hollow inner mold, and the end mold, the tensioning area and the transition connector are connected and fixed by fasteners.

[0016] Optionally, in the hollow component inner mold described above, the transition connector and the hollow inner mold are an integral structure.

[0017] Optionally, the hollow inner mold further includes a tension adjustment mechanism for adjusting the tension of the hollow inner mold.

[0018] Optionally, in the hollow component inner mold described above, the tensioning adjustment mechanism includes a threaded sleeve, which is disposed on the side of the end mold away from the hollow inner mold, and the threaded sleeve is threadedly engaged with the fastener.

[0019] Optionally, in the hollow component inner mold described above, the cross-sectional shape of the hollow inner mold is polygonal, and the tensioning area is located at the corner of the hollow inner mold.

[0020] The hollow component inner mold provided in this application is formed by using a deformable covering layer to enclose the hollow inner mold, and the hollow inner mold can extend along the axial direction of the hollow component. At least a portion of the end faces at both ends of the hollow inner mold are tensioning zones, so that tension force along a first direction can be applied or unloaded through the tensioning zones. When manufacturing the hollow component, tension force along the first direction can be applied through the tensioning zones to make the sidewalls of the hollow inner mold tensioned along a second direction, so that the hollow inner mold can support materials such as concrete. When demolding is required, the tension force along the first direction can be unloaded through the tensioning zones, so that the sidewalls of the hollow inner mold can 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 tensioning area of ​​the end faces of the hollow inner mold, so as to cast and form a hollow component. The hollow inner mold can be removed 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.

[0021] 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

[0022] 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.

[0023] Figure 1 A schematic diagram of the hollow inner mold provided in Embodiment 1 of this application. Figure 1 ;

[0024] Figure 2 A schematic diagram of the hollow inner mold provided in Embodiment 1 of this application. Figure 2 ;

[0025] Figure 3 This is a schematic diagram of the hollow inner mold provided in Embodiment 2 of this application;

[0026] Figure 4 This is a schematic diagram of the hollow inner mold provided in Embodiment 3 of this application;

[0027] Figure 5 This is an exploded view of the hollow component provided in Embodiment 1 of this application;

[0028] Figure 6 A partial cross-sectional view of the hollow component provided in Embodiment 1 of this application;

[0029] Figure 7 This is a partial cross-sectional view of the hollow component provided in Embodiment 2 of this application;

[0030] Figure 8 This is a partial cross-sectional view of the hollow component provided in Embodiment 3 of this application;

[0031] Figure 9 This is a schematic flowchart illustrating the hollow component preparation method provided in the embodiments of this application.

[0032] Among them, 100 is the hollow component inner mold, 10 is the deformable covering layer, 11 is the hollow inner mold, 111 is the tensioning area, 1111 is the connecting part, 12 is the flexible material, 13 is the deformation layer, 14 is the transition connector, 15 is the fastener, 20 is the end mold, 21 is the adjustment groove, 30 is the tensioning adjustment mechanism, 31 is the threaded sleeve, and 200 is the hollow component. Detailed Implementation

[0033] 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.

[0034] 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.

[0035] 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.

[0036] Therefore, such as Figure 1As shown in the figure, this application discloses a hollow component inner mold 100, including a deformable covering layer 10, which surrounds and forms a hollow inner mold 11. Tensioning force along a first direction is applied or removed through tensioning areas 111 at both ends of the hollow inner mold 11 to cast and form a hollow component. 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.

[0037] The following will combine Figures 1 to 8 The hollow component inner mold 100 disclosed in the embodiments of this application will be explained and described in detail.

[0038] Among them, such as Figure 1 , Figure 3 and Figure 4 As shown, the deformable covering layer 10 can be configured to form a hollow inner mold 11, and as... Figure 2 As shown, the hollow inner mold 11 can extend along the axial direction of the hollow component 200 to form a cavity structure in the enclosed area of ​​the hollow inner mold 11, thereby forming the hollow structure of the hollow component 200. 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.

[0039] like Figure 1 , Figure 3 and Figure 4 As shown, at least a portion of the end faces of the hollow inner mold 11 are tensioning regions 111, i.e., as... Figure 3 As shown, the end faces of the hollow inner mold 11 can be partially tensioned regions 111, or they can be as follows: Figure 1 and Figure 4 As shown, both ends of the hollow inner mold 11 are tensioning regions 111, so that tension force along the first direction can be applied or unloaded through the tensioning regions 111, thereby enabling the sidewall of the hollow inner mold 11 to be tensioned or contracted along the second direction, so that the sidewall of the hollow inner mold 11 can support or detach from materials such as concrete.

[0040] 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 direction of the tension force applied to the tensioning area 111, and the first direction can have a certain angle with the axial direction of the hollow inner mold 11, so that the component direction of the tension force is parallel to the axial direction of the hollow inner mold 11. Of course, the first direction can also be parallel to the axial direction of the hollow inner mold 11, 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 perpendicular to the side wall direction of the hollow inner mold 11.

[0041] When preparing the hollow component 200, a tension force along the first direction can be applied to the hollow inner mold 11 through the tensioning areas 111 at both ends of the hollow inner mold 11, 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 concrete and other materials to form the hollow component 200. When the hollow component 200 needs to be demolded after curing, the tension force applied to the hollow inner mold 11 along the first direction can be removed through the tensioning areas 111 at both ends of the hollow inner mold 11, 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 detach 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.

[0042] In some embodiments, such as Figure 3 As 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 tensioning force of the hollow inner mold 11 along the first direction can be applied or removed through the tensioning area 111, allowing the sidewall of the hollow inner mold 11 to be tensioned or contracted along the second direction.

[0043] 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.

[0044] In some embodiments, such as Figure 4 As 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.

[0045] In some embodiments, such as Figure 4 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.

[0046] In some embodiments, when the hollow inner mold 11 has a polygonal cross-section, a tensioning region 111 can be provided at the corner of the end face of the hollow inner mold 11, and the tensioning region 111 can extend toward both sides of the corner, so that when a tensioning force is applied to the tensioning region 111 at the end face of the hollow inner mold 11 along the first direction, the corner of the hollow inner mold 11 can cause the side wall of the hollow inner mold 11 to be tensioned, thereby supporting the pressure of materials such as concrete. At the same time, when the tensioning force is released from the tensioning region 111 at the end face of the hollow inner mold 11 along the first direction, the corner of the hollow inner mold 11 can cause the side wall of the hollow inner mold 11 to contract, thereby allowing the side wall of the hollow inner mold 11 to detach from the inner cavity wall of the hollow component 200.

[0047] In some embodiments, when the hollow inner mold 11 has a polygonal cross-section, in order to improve the supporting force of the sidewall of the hollow inner mold 11, the entire end face of the hollow inner mold 11 can be uniformly set as a tensioning region 111. This allows the supporting force of the sidewall of the hollow inner mold 11 to be improved by applying a tension force along the first direction to the entire end face of the hollow inner mold 11, thus preventing the sidewall of the hollow inner mold 11 from deforming under the pressure of materials such as concrete, which would affect the hollow structure forming quality of the hollow component 200. At the same time, when the tension force along the first direction to the entire end face of the hollow inner mold 11 is removed, the sidewall of the hollow inner mold 11 can be quickly detached from the inner cavity wall of the hollow component 200, improving the convenience and efficiency of demolding.

[0048] In some embodiments, when the hollow inner mold 11 has a cross-sectional shape with an arc surface, such as a circle, the entire end face of the hollow inner mold 11 can be set as a tensioning region 111. This allows the support force of the side wall of the hollow inner mold 11 to be increased when a tension force is applied to the entire end face of the hollow inner mold 11 along the first direction, thus preventing the side wall of the hollow inner mold 11 from deforming under the pressure of materials such as concrete, which would affect the hollow structure forming quality of the hollow component 200. At the same time, when the tension force is removed from the entire end face of the hollow inner mold 11 along the first direction, the side wall of the hollow inner mold 11 can be quickly detached from the inner cavity wall of the hollow component 200, improving the convenience and efficiency of demolding.

[0049] In some embodiments, such as Figure 5 and Figure 6 As shown, the hollow component inner mold 100 may further include end molds 20 disposed at both ends of the hollow inner mold 11 to ensure the flatness of the end face of the hollow component 200. Simultaneously, the end molds 20 can be connected to the tensioning area 111 of the hollow inner mold 11. Furthermore, a tensioning shaft may be disposed on the side of the end mold 20 away from the hollow inner mold 11, thereby connecting it to a tensioning device. This allows the tensioning device to apply or remove tension force along the first direction in the tensioning area 111 of the hollow inner mold 11 through the end mold 20.

[0050] In some embodiments, the end mold 20 can be directly connected to the tensioning area 111 of the hollow inner mold 11. That is, the end mold 20 can be provided with a positioning hole that can position and install the tensioning area 111 of the hollow inner mold 11, and the positioning hole can be adapted to the cross-section of the tensioning area 111 so that the tensioning area 111 can pass through the positioning hole and be fixed by an anchor, thereby realizing the connection between the end mold 20 and the tensioning area 111 of the hollow inner mold 11.

[0051] In some embodiments, such as Figure 5 As shown, a transition connector 14 may be provided on the inner side of the hollow inner mold 11 so that the end mold 20, the tensioning area 111 and the transition connector 14 can be connected and fixed by fasteners such as bolts 15, thereby ensuring the uniformity of the force on the tensioning area 111 of the hollow inner mold 11 and the tensioning effect of the hollow inner mold 11.

[0052] In some embodiments, such as Figure 6 As shown, to facilitate the connection between the tensioning region 111 of the hollow inner mold 11 and the transition connector 14, the tensioning region 111 on the end face of the hollow inner mold 11 can form a connecting portion 1111 that can connect with the transition connector 14. The transition connector 14 can be a rigid member with a ring structure, so that the transition connector 14 can be connected and fixed to the connecting portion 1111 of the tensioning region 111 and the end mold 20 by fasteners 15.

[0053] In some embodiments, the transition connector 14 may also be an integral structure with the hollow inner mold 11, that is, the hollow inner mold 11 may be provided with a certain length of rigid connector along the axial direction of the hollow component 200, so that the end mold 20 can be directly connected to the rigid connector by fasteners 15 such as bolts.

[0054] In some embodiments, such as Figure 7 As shown, an adjustment groove 21 adapted to the end face of the hollow inner mold 11 can be opened on the end mold 20, and the adjustment groove 21 has a certain depth so that the tension of the hollow inner mold 11 can be adjusted by rotating the fasteners 15 such as bolts, thereby making the tension of the hollow inner mold 11 along the first direction controllable and ensuring the stability of the hollow inner mold 11.

[0055] In some embodiments, such as Figure 8 As shown, the hollow inner mold 100 may also include a tension adjustment mechanism 30, which can independently adjust the tension of the hollow inner mold 11 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.

[0056] In some embodiments, such as Figure 8 As shown, the tension adjustment mechanism 30 may include a threaded sleeve 31, which may be located on the side of the end mold 20 away from the hollow inner mold 11. Meanwhile, the fastener 15 may be a bolt, such that one end of the bolt passes sequentially through the transition connector 14, the connecting portion 1111 of the hollow inner mold 11, and the end mold 20, and is threadedly engaged with the threaded sleeve 31, thereby enabling independent adjustment of the tension force of the hollow inner mold 11. When the tension force of the hollow inner mold 11 along the first direction is large, the threaded sleeve 31 can be rotated counterclockwise, causing the bolt to move towards the side closer to the hollow inner mold 11, thus reducing the tension force of the hollow inner mold 11 along the first direction. When the tension force of the hollow inner mold 11 along the first direction is small, the threaded sleeve 31 can be rotated clockwise, causing the bolt to move away from the hollow inner mold 11, i.e., the end face of the hollow inner mold 11 moves towards the direction closer to the adjustment groove 21, thereby increasing the tension force of the hollow inner mold 11 along the first direction. Of course, during the demolding process, the tension can be gradually released through the tension adjustment mechanism 30 to ensure the stability of the hollow inner mold 11 during demolding. It should be noted that the fastener 15 can also be a screw, and one end of the screw can be connected to the end face of the hollow inner mold 11, while the other end of the screw can pass through the end mold 20 and be threaded into the threaded sleeve 31 to achieve independent adjustment of the tension of the hollow inner mold 11.

[0057] The hollow component inner mold 100 disclosed in this application is formed by using a deformable covering layer 10 to enclose a hollow inner mold 11. The hollow inner mold 11 can extend along the axial direction of the hollow component 200. At least a portion of the end faces at both ends of the hollow inner mold 11 are tensioning regions 111, so that tension force along the first direction can be applied or unloaded through the tensioning regions 111. When preparing the hollow component 200, tension force along the first direction can be applied through the tensioning regions 111, so that the sidewalls 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 demolding is required, the tension force along the first direction can be unloaded through the tensioning regions 111, so that the sidewalls of the hollow inner mold 11 can contract along the second direction, thereby facilitating the removal of the hollow inner mold 11.

[0058] The hollow component inner mold 100 disclosed in this application applies or removes the tension force along the first direction of the hollow inner mold 11 through the tensioning areas 111 at both ends of the hollow inner mold 11, 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.

[0059] like Figure 9 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 hollow inner mold, 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.

[0060] Step S100: Place the inner mold of the hollow component;

[0061] The hollow inner mold 11 is placed inside the forming mold of the hollow component 200, and the tensioning areas 111 at both ends of the hollow inner mold 11 are connected to the tensioning equipment. Specifically, the tensioning areas 111 at both ends of the hollow inner mold 11 are connected and fixed to the end mold 20, and the tensioning shaft of the end mold 20 is connected to the tensioning equipment, so that the tensioning equipment applies a tensioning force to the hollow inner mold 11 in the first direction through the end mold 20.

[0062] Step S200: Tension the hollow inner mold;

[0063] Tensioning force is applied to the hollow inner mold 11 in the first direction by a tensioning device, so that the sidewalls of the hollow inner mold 11 are tensioned in the second direction, thereby supporting the pressure of materials such as concrete.

[0064] Step S300: Pour material;

[0065] 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.

[0066] Step S400: Demolding;

[0067] The tension force on the hollow inner mold 11 along the first direction is removed by the tensioning equipment to eliminate the supporting force on the side wall of the hollow inner mold 11 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 extracted from the hollow component 200.

[0068] 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.

[0069] 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 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, saving equipment costs. At the same time, by directly tensioning the hollow inner mold 11, the risk of deformation of the side wall of the hollow inner mold 11 due to the pressure of concrete and other materials can be reduced, ensuring the quality of the hollow component 200.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] 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) surrounds and forms a hollow inner mold (11). The hollow inner mold (11) can extend along the axial direction of the hollow component (200). At least a portion of the end faces of the hollow inner mold (11) are tension regions (111). The tension regions (111) are used to apply or release tension along a first direction so that the sidewalls of the hollow inner mold (11) can be tensioned or contracted along a second direction, which is different from the second direction.

2. 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).

3. The hollow component inner mold according to claim 2, characterized in that, The flexible material (12) includes one of soft materials and elastic materials.

4. The hollow component inner mold according to claim 3, 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.

5. The hollow component inner mold according to claim 3, characterized in that, The elastic material includes at least one of rubber, silicone, polyurethane elastomer, high-resilience TPU sheet, and high-resilience TPE sheet.

6. 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.

7. The hollow component inner mold according to claim 6, 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).

8. The hollow component inner mold according to claim 1, characterized in that, It also includes end molds (20) disposed at both ends of the hollow inner mold (11), the end molds (20) being connected to the tensioning area (111) of the hollow inner mold (11).

9. The hollow component inner mold according to claim 8, characterized in that, The hollow inner mold (11) is provided with a transition connector (14) on its inner side. The end mold (20), the tensioning area (111) and the transition connector (14) are connected and fixed by fasteners (15).

10. The hollow component inner mold according to claim 9, characterized in that, It also includes a tension adjustment mechanism (30) for adjusting the tension of the hollow inner mold (11).

11. The hollow component inner mold according to claim 10, characterized in that, The tensioning adjustment mechanism (30) includes a threaded sleeve (31), which is located on the side of the end mold (20) away from the hollow inner mold (11), and the threaded sleeve (31) is threadedly engaged with the fastener (15).

12. The hollow component inner mold according to any one of claims 1 to 11, characterized in that, The hollow inner mold (11) has a polygonal cross-sectional shape, and the tensioning area (111) is located at the corner of the hollow inner mold (11).

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