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 hollow inner mold can extend in the axial direction of the hollow component, at least partial areas of the end faces of the two ends of the hollow inner mold are tensioning areas, and the tensioning areas are used for applying or removing tensioning force 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. According to the hollow component inner mold, the tensioning force of the hollow inner mold in the first direction is applied or removed through the tensioning areas on the end faces of the two ends of the hollow inner mold so that the hollow component can be formed through pouring, the hollow inner mold can be separated from the hollow component, and the size stability of the hollow component is guaranteed; the demolding convenience and efficiency of the hollow component are improved, the inner mold of the hollow component can be reused, and the manufacturing cost of the hollow component is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of prefabricated components, and more particularly to a hollow component inner mold and a hollow component preparation method. BACKGROUND

[0002] In the conventional processing of components with hollow structures, such as hollow piles, hollow floors, etc., an inner mold is placed in a steel reinforcement cage, and a layer of material facilitating demolding, such as foam, pearl wool, etc., is wrapped on the outer surface of the inner mold. After the processing of the concrete component is completed, the inner mold is removed, and the demolding material is damaged during the removal process, increasing the cost. The demolding resistance is large, and the convenience of demolding is poor. In addition, due to the compressible and flexible nature of the demolding material, the dimensional instability of the inner mold during the forming process of the hollow component results in a large tolerance range of the inner hole, and the size is difficult to control.

[0003] Therefore, how to ensure the dimensional stability of the hollow component while improving the demolding convenience and efficiency of the hollow component and saving costs has become a technical problem to be solved by those skilled in the art. SUMMARY

[0004] Therefore, how to ensure the dimensional stability of the hollow component while improving the demolding convenience and efficiency of the hollow component and saving costs has become a technical problem to be solved by those skilled in the art.

[0005] Another object of the present application is to provide a hollow component preparation method using the above-mentioned hollow component inner mold.

[0006] To achieve the above object, the present application provides the following technical solutions:

[0007] A hollow component inner mold, comprising:

[0008] A deformable cladding layer, the deformable cladding 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 both ends of the hollow inner mold is at least partially a tension area, the tension area is used to apply or remove tension 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.

[0009] Optionally, in the above-mentioned hollow component inner mold, at least a part of the hollow inner mold is a flexible material.

[0010] Optionally, in the above-mentioned hollow component inner mold, the flexible material includes one of a soft material and an elastic material.

[0011] Optionally, in the hollow member inner mold, the soft material comprises at least one of reinforced soft PVC coiled material, reinforced soft TPO coiled material, high-density polyethylene material, specially-made reinforced rubber material, reinforced putty, and plastic resin.

[0012] Optionally, in the hollow member inner mold, the elastic material comprises at least one of rubber, silica gel, polyurethane elastomer, high-rebound TPU sheet, and high-rebound TPE sheet.

[0013] Optionally, in the hollow member inner mold, the deformable cladding layer comprises a plurality of stacked deformation layers, and each deformation layer has a different elastic modulus.

[0014] Optionally, in the hollow member inner mold, the elastic modulus of each deformation layer gradually increases from the outside of the deformable cladding layer to the inside of the deformable cladding layer.

[0015] Optionally, in the hollow member inner mold, end molds are further arranged at both ends of the hollow inner mold, and the end molds are connected to the tensioning areas of the hollow inner mold.

[0016] Optionally, in the hollow member inner mold, a transition connector is arranged on the inside of the hollow inner mold, and the end molds, the tensioning areas, and the transition connector are connected and fixed by fasteners.

[0017] Optionally, in the hollow member inner mold, the transition connector is in an integrated structure with the hollow inner mold.

[0018] Optionally, in the hollow member inner mold, a tensioning adjustment mechanism is further arranged, and the tensioning adjustment mechanism is used to adjust the tensioning force of the hollow inner mold.

[0019] Optionally, in the hollow member inner mold, the tensioning adjustment mechanism comprises a threaded sleeve, the threaded sleeve is arranged on the side of the end mold away from the hollow inner mold, and the threaded sleeve is threadedly connected with the fastener.

[0020] Optionally, in the hollow member inner mold, the hollow inner mold has a polygonal cross-sectional shape, and the tensioning areas are arranged at the corners of the hollow inner mold.

[0021] A hollow member preparation method, which adopts the hollow member inner mold according to any one of the above, comprises the following steps:

[0022] Placing the hollow member inner mold, the hollow member inner mold is placed in a forming mold of the hollow member, and the tensioning areas at both ends of the hollow member inner mold are connected with tensioning equipment.

[0023] tensioning the hollow inner mold by applying a tension force in the first direction to the hollow inner mold to tension the side wall of the hollow inner mold in the second direction;

[0024] casting, casting the material in the forming mold and curing;

[0025] demolding, by removing the tension force in the first direction to the hollow inner mold to eliminate the supporting force of the side wall of the hollow inner mold in the second direction, and then applying a pulling force in the first direction or an acute angle direction with the first direction to the hollow inner mold.

[0026] The hollow inner mold provided by the application is surrounded by a deformable cladding layer to form the hollow inner mold, and the hollow inner mold can extend in the axial direction of the hollow component, and the end face of the hollow inner mold at both ends is at least partially a tension area, so that the tension force in the first direction can be applied or removed through the tension area. When the hollow component is prepared, the tension force in the first direction can be applied through the tension area to tension the side wall of the hollow inner mold in the second direction, so that the hollow inner mold can support the material such as concrete; when demolding is needed, the tension force in the first direction is removed through the tension area, so that the side wall of the hollow inner mold can shrink in the second direction, so that the hollow inner mold can be easily extracted. As can be seen from the above examples, the hollow inner mold provided by the application applies or removes the tension force in the first direction of the hollow inner mold through the tension area of the end face of the hollow inner mold at both ends, so as to cast the hollow component and extract the hollow inner mold from the hollow component. While ensuring the dimensional stability of the hollow component, the convenience and efficiency of demolding the hollow component are improved, the hollow inner mold can be reused, and the manufacturing cost of the hollow component is reduced.

[0027] The technical features mentioned above, the technical features to be mentioned below, and the technical features shown in the drawings alone can be combined with each other arbitrarily, as long as the combined technical features are not contradictory to each other. All feasible feature combinations are the technical content explicitly described herein. Any one of the multiple sub-features contained in the same sentence can be applied independently, and does not have to be applied together with other sub-features. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of the provided drawings.

[0029] Figure 1 Structure diagram of the hollow inner mold provided by Embodiment One of the applicationFigure 1 ;

[0030] Figure 2 Structure diagram of the hollow inner mold provided in Embodiment One of the present application Figure 2 ;

[0031] Figure 3 Structure diagram of the hollow inner mold provided in Embodiment Two of the present application

[0032] Figure 4 Structure diagram of the hollow inner mold provided in Embodiment Three of the present application

[0033] Figure 5 Explosion diagram of the hollow component provided in Embodiment One of the present application

[0034] Figure 6 Partial sectional view of the hollow component provided in Embodiment One of the present application

[0035] Figure 7 Partial sectional view of the hollow component provided in Embodiment Two of the present application

[0036] Figure 8 Partial sectional view of the hollow component provided in Embodiment Three of the present application

[0037] Figure 9 Flow diagram of the method for preparing the hollow component provided in the present application.

[0038] In the figure, 100 is a hollow component inner mold, 10 is a deformable cladding layer, 11 is a hollow inner mold, 111 is a tensioning area, 1111 is a connecting part, 12 is a flexible material, 13 is a deformation layer, 14 is a transition connecting piece, 15 is a fastener, 20 is an end mold, 21 is an adjusting groove, 30 is a tensioning adjusting mechanism, 31 is a threaded sleeve, and 200 is a hollow component. DETAILED DESCRIPTION

[0039] The core of the present application is to provide a hollow component inner mold to ensure the dimensional stability of the hollow component, improve the convenience and efficiency of demolding the hollow component, and save costs.

[0040] Another core of the present application is to provide a method for preparing a hollow component using the above-mentioned hollow component inner mold.

[0041] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0042] In the conventional processing of components with a hollow structure, such as hollow piles, hollow floors and the like, an inner mold is placed in a steel reinforcement cage, and a layer of material facilitating demolding, such as foam, pearl wool and the like, is wrapped on the outer surface of the inner mold. After the processing of the concrete component is completed, the inner mold is removed, and the demolding material is damaged during the removal process, thereby increasing the cost. The demolding resistance is large, and the convenience of demolding is poor. Moreover, due to the compressible and flexible nature of the demolding material, the dimensional instability of the inner mold during the forming process of the hollow component leads to a large tolerance range of the inner hole, and the size is difficult to control.

[0043] To this end, as shown in Figure 1 , the embodiment of the present application discloses a hollow component inner mold 100, which comprises a deformable cladding layer 10, and the deformable cladding layer 10 surrounds to form a hollow inner mold 11. The tensile force of the hollow inner mold 11 in the first direction is applied or removed through the tensile area 111 of the two end faces of the hollow inner mold 11, so as to form a hollow component by pouring, and the hollow inner mold 11 can be removed from the hollow component 200. While ensuring the dimensional stability of the hollow component 200, the demolding convenience and efficiency of the hollow component 200 are improved, and the hollow component inner mold 100 can be reused, thereby reducing the manufacturing cost of the hollow component 200.

[0044] The hollow component inner mold 100 disclosed in the embodiment of the present application will be specifically explained and described below. Figures 1 to 8

[0045] Among them, as shown in Figure 1 , Figure 3 and Figure 4 , the deformable cladding layer 10 can surround to form a hollow inner mold 11, and as shown in Figure 2 , the hollow inner mold 11 can extend in the axial direction of the hollow component 200, so as to form a hollow structure in the surrounding area of the hollow inner mold 11, thereby forming a 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, a rectangle, a pentagon, etc., or a cross-sectional shape with an arc surface such as a circle, which can be determined according to actual needs.

[0046] As shown in Figure 1 , Figure 3 and Figure 4 , at least part of the area of the two end faces of the hollow inner mold 11 is a tensile area 111, that is, as shown in Figure 3 , the two end faces of the hollow inner mold 11 can be partially tensile area 111, or as shown in Figure 1 and Figure 4 ​As shown, the end faces of the hollow inner mold 11 at both ends are tension areas 111, so that the tension force in the first direction is applied or removed through the tension areas 111, so that the side wall of the hollow inner mold 11 can be tensioned or contracted in the second direction, so that the side wall of the hollow inner mold 11 can support the concrete or other materials or be separated from the concrete or other materials.

[0047] It should be noted that in the above embodiment, the first direction and the second direction are two different directions, wherein the first direction is the direction of the tension force applied to the tension area 111, and the first direction can have a certain angle with the axial direction of the hollow inner mold 11, that is, the component direction of the tension force can be parallel to the axial direction of the hollow inner mold 11, of course, the first direction can 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, so that the tension effect of the hollow inner mold 11 can be improved, and the second direction can be perpendicular to the direction of the side wall of the hollow inner mold 11.

[0048] When the hollow component 200 is prepared, the tension force in the first direction can be applied to the hollow inner mold 11 through the tension 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 in the second direction, at this time, the side wall of the hollow inner mold 11 can resist the gravity or lateral pressure of the concrete or other materials, so as to support the concrete or other materials, so as to form the hollow component 200; when the curing of the hollow component 200 is completed and demolding is required, the tension force in the first direction applied to the hollow inner mold 11 can be removed through the tension areas 111 at both ends of the hollow inner mold 11, so that the side wall of the hollow inner mold 11 can be contracted in 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, so that the hollow inner mold 11 can be easily extracted, thereby improving the demolding convenience and efficiency of the hollow component 200, and the hollow inner mold 100 can be repeatedly used, thereby reducing the manufacturing cost of the hollow component 200.

[0049] In some embodiments, as shown, Figure 3 As shown, at least part of the area of the hollow inner mold 11 can adopt a flexible material 12, that is, in the circumferential direction of the hollow inner mold 11, part of the area can adopt a flexible material 12, and the other area can adopt a hard deformation material such as a memory metal, of course, all areas can adopt a flexible material 12. When part of the area of the hollow inner mold 11 in the circumferential direction adopts a flexible material 12, the flexible material 12 can be located on the side wall of the hollow inner mold 11, so that the tension force in the first direction of the hollow inner mold 11 can be applied or removed through the tension area 111, so that the side wall of the hollow inner mold 11 can be tensioned or contracted in the second direction.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] In some embodiments, such asFigure 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] In some embodiments, as shown in Figure 8 The hollow member inner mold 100 can further comprise a tension adjusting mechanism 30, so that the tension of the hollow inner mold 11 can be independently adjusted by the tension adjusting mechanism 30, so that the tension of the hollow inner mold 11 in the first direction is controllable, and the stability of the hollow inner mold 11 is ensured.

[0063] In some embodiments, as shown in Figure 8 The tension adjusting mechanism 30 can comprise a threaded sleeve 31, and the threaded sleeve 31 can be located on the side of the end mold 20 away from the hollow inner mold 11. At the same time, the fastener 15 can adopt a bolt, so that one end of the bolt can pass through the transition connector 14, the connecting part 1111 of the hollow inner mold 11 and the end mold 20 in sequence and be threadedly connected with the threaded sleeve 31, so as to independently adjust the tension of the hollow inner mold 11. When the tension of the hollow inner mold 11 in the first direction is large, the threaded sleeve 31 can be counterclockwise rotated, so that the bolt moves towards the side close to the hollow inner mold 11, so as to reduce the tension of the hollow inner mold 11 in the first direction; when the tension of the hollow inner mold 11 in the first direction is small, the threaded sleeve 31 can be clockwise rotated, so that the bolt moves away from the hollow inner mold 11, i.e. the end face of the hollow inner mold 11 moves towards the adjusting groove 21, so as to increase the tension of the hollow inner mold 11 in the first direction. Of course, during the demolding process, the tension adjusting mechanism 30 can also be used to gradually remove the tension, so as to ensure the stability of the demolding of the hollow inner mold 11. It should be noted that the fastener 15 can also adopt a screw, and one end of the screw can be connected with the end face of the hollow inner mold 11, and the other end of the screw can pass through the end mold 20 and be threadedly connected with the threaded sleeve 31, so as to independently adjust the tension of the hollow inner mold 11.

[0064] The hollow member inner mold 100 disclosed in the embodiments of the present application can be formed by surrounding the hollow inner mold 11 with the deformable cladding layer 10, and the hollow inner mold 11 can extend in the axial direction of the hollow member 200, and the end face of the hollow inner mold 11 at both ends is at least partially a tension area 111, so that the tension in the first direction can be applied or removed through the tension area 111. When the hollow member 200 is prepared, the tension in the first direction can be applied through the tension area 111, so that the side wall of the hollow inner mold 11 can be tensioned in the second direction, so that the hollow inner mold 11 can support the material such as concrete; when demolding is needed, the tension in the first direction can be removed through the tension area 111, so that the side wall of the hollow inner mold 11 can be contracted in the second direction, so that the hollow inner mold 11 can be easily extracted.

[0065] The hollow member inner mold 100 disclosed by the embodiment of the present application can exert or release the tension force of the hollow inner mold 11 along the first direction through the tension area 111 of the two end faces of the hollow inner mold 11, so as to cast the hollow member 200 and can take out the hollow inner mold 11 from the hollow member, which improves the convenience and efficiency of the demolding of the hollow member 200 while ensuring the dimensional stability of the hollow member 200, and makes the hollow member inner mold 100 reusable, thereby reducing the manufacturing cost of the hollow member 200.

[0066] As shown in Figure 9 The embodiment of the present application also discloses a hollow member preparation method, which adopts the hollow member inner mold 100 disclosed in the above embodiment, and thus has all the technical effects of the hollow member inner mold 100. The steps of the hollow member preparation method include placing the hollow member inner mold (S100), tensioning the hollow inner mold (S200), casting the material (S300), and demolding (S400). The hollow member preparation method disclosed by the embodiment of the present application will be explained and described in detail below.

[0067] S100, placing the hollow member inner mold;

[0068] The hollow inner mold 11 is placed in the forming mold of the hollow member 200, and the tension area 111 at the two ends of the hollow inner mold 11 is connected with the tension device. Specifically, the tension area 111 at the two ends of the hollow inner mold 11 is connected and fixed with the end mold 20, and the tension shaft of the end mold 20 is connected with the tension device, so that the tension device can exert the tension force along the first direction on the hollow inner mold 11 through the end mold 20.

[0069] S200, tensioning the hollow inner mold;

[0070] The tension force along the first direction is exerted on the hollow inner mold 11 by the tension device, so that the side wall of the hollow inner mold 11 is tensioned along the second direction, thereby supporting the pressure of the concrete and other materials.

[0071] S300, casting the material;

[0072] The concrete and other materials are cast in the forming mold and located outside the hollow inner mold 11, so that the hollow structure of the hollow member 200 is formed in the surrounding area of the hollow inner mold 11. After the casting of the concrete and other materials is completed, the hollow member 200 is cured to have a certain strength. It should be noted that the material can be concrete, cement and the like, and the specific material can be determined according to actual needs.

[0073] S400, demolding;

[0074] The tensioning device is used to remove the tension force of the hollow inner mold 11 in the first direction, to eliminate the support force of the sidewall of the hollow inner mold 11 in the second direction, and then to apply a tension force of the hollow inner mold 11 in the first direction or in an acute angle direction with the first direction, so that the hollow inner mold 11 can be pulled out of the hollow member 200.

[0075] It should be noted that the hollow member 200 can also be provided with a steel cage to improve the tensile strength of the hollow member 200. When the hollow member 200 is provided with a steel cage, the hollow inner mold 11 can be placed in the steel cage of the hollow member 200, so that the concrete and other materials can cooperate with the steel cage to provide a bearing capacity for the hollow member 200.

[0076] The hollow member preparation method disclosed by the embodiments of the present application can be used for the preparation of the hollow member 200 such as the prefabricated hollow pile and the prefabricated hollow floor, and can share a tensioning device with the prefabricated hollow member, that is, the tensioning or contraction of the hollow inner mold 11 can be realized, so that the convenience of the hollow member 200 preparation and demolding can be improved, the equipment cost is saved, and the risk of deformation of the sidewall of the hollow inner mold 11 due to the pressure of the concrete and other materials can be reduced, and the quality of the hollow member 200 is ensured.

[0077] The technical features mentioned above and the technical features shown in the drawings alone can be combined with each other arbitrarily, as long as the combined technical features are not contradictory. All feasible feature combinations are explicitly described herein.

[0078] The terms "first" and "second" and the like in the specification and claims of the present application and the above drawings are used to distinguish different objects, and are not used to describe a specific order. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but can include steps or units not listed.

[0079] The "parallel" and "vertical" involved in the present application are "substantially parallel" and "substantially vertical" in actual operation. "Substantially parallel" can be understood as parallel with a certain error, and similarly, "substantially vertical" can be understood as vertical with a certain error.

[0080] The foregoing description of the disclosed embodiments enables a person skilled in the art to make or use the application. Modifications of these embodiments will occur to persons of skill in the art, and that the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Therefore, the present application is not intended 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 member inner mold characterized by comprising: include: A deformable covering layer (10) surrounds and forms a hollow inner mold (11). The hollow inner mold (11) is capable of extending 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 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. A core within hollow member according to claim 1, characterized in that At least a portion of the hollow inner mold (11) is made of flexible material (12).

3. A core within hollow member according to claim 2, characterized in that The flexible material (12) includes one of soft materials and elastic materials.

4. A core within hollow member according to claim 3, wherein 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. A core within hollow member according to claim 3, wherein The elastic material includes at least one of rubber, silicone, polyurethane elastomer, high-resilience TPU sheet, and high-resilience TPE sheet.

6. The hollow member internal mold of claim 1, wherein 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. A core within hollow member 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 member internal mold of claim 1, wherein 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. A core within hollow member 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. A core within form according to claim 9, wherein, It also includes a tension adjustment mechanism (30) for adjusting the tension of the hollow inner mold (11).

11. A core within form according to claim 10, wherein, 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. A core module according to any one of claims 1 to 11, wherein 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).

13. A method for manufacturing a hollow structural member using the inner mold (100) according to any one of claims 1 to 12, characterized by, Including the following steps: Place the hollow inner mold of the component, place the hollow inner mold (11) in the forming mold of the hollow component (200), and connect the tensioning areas (111) at both ends of the hollow inner mold (11) to the tensioning equipment; Tensioning the hollow inner mold, by applying a tensioning force to the hollow inner mold (11) 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. demoulding, by removing the tensile force along the first direction of the hollow inner mould (11) to eliminate the support force along the second direction of the side wall of the hollow inner mould (11), and then applying a tensile force along the first direction or an acute angle direction with the first direction to the hollow inner mould (11) again.

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