Core mold assembly, mold and cylinder machining method

Abstract

The invention discloses a core mold assembly, a mold and a cylinder machining method, and relates to the technical field of composite material forming. In the core mold assembly, a core mold body comprises two core mold half molds, the two core mold half molds are sequentially arranged in the direction perpendicular to the first direction, and first parting surfaces of the two core mold half molds obliquely extend relative to the first direction; the two core mold half molds can slide relative to the extending direction of the first parting surface so as to adjust the size of the section, perpendicular to the first direction, of the core mold body. Due to the fact that the split type core mold half molds can be staggered through relative sliding after mold closing, the peripheral size is reduced, a certain demolding gap can be generated between the inner periphery of a cured cylinder and the periphery of the core mold body, demolding resistance is reduced, the two core mold half molds can be demolded separately, and therefore the demolding difficulty of the core mold body can be reduced; in addition, according to the machining size requirement of the inner hole of the cylinder, the relative position of the two core mold half molds can be adaptively adjusted, and the universality of the core mold body is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of composite material molding, and in particular to a core mold component, a mold and a column processing method. Background Art

[0002] Bus shelter columns are crucial structural components, connecting the ceiling and the floor, providing critical support. Some columns are constructed of composite materials, featuring long, thick-walled, hollow structures. They can reach lengths of up to 3 meters and wall thicknesses of up to 8 mm.

[0003] In a traditional composite column molding process, prepreg is applied to a core mold, followed by a curing oven. The core mold is typically a monolithic foam or metal core mold. This process makes it difficult to remove the core mold after the column has cured, and longer columns are even more challenging to remove.

[0004] Therefore, how to reduce the difficulty of demoulding the core mold is a technical problem that those skilled in the art currently need to solve. Summary of the Invention

[0005] In view of this, an object of the present invention is to provide a core mold assembly, a mold and a column processing method, in which the core mold is less difficult to demould.

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

[0007] A core mold assembly includes a core mold portion, the core mold portion includes a core mold body, the core mold body includes two core mold halves, the two core mold halves are arranged in sequence along a direction perpendicular to a first direction, and the first parting surfaces of the two core mold halves extend obliquely relative to the first direction; the two core mold halves can slide relative to the extension direction of the first parting surface to adjust the cross-sectional size of the core mold body perpendicular to the first direction.

[0008] Preferably, the first parting surfaces of the two core mold half-molds are respectively provided with a first protrusion and a first groove for plug-fitting, and the first protrusion and the first groove can slide relatively along the extension direction of the first parting surface.

[0009] Preferably, the core mold part further includes a first vacuum bag; the first vacuum bag is cylindrical and elastic, and the first vacuum bag is sleeved on the outer side of the core mold body.

[0010] Preferably, it further comprises a connecting portion, which is provided on one side of the core mold body in the first direction;

[0011] Wherein, the connecting part includes a core mold connecting plate and a first top screw movably connected to the core mold connecting plate, the core mold connecting plate is fixedly connected to one of the core mold half molds, and can provide thrust to the other core mold half mold by moving the first top screw along the first direction.

[0012] Preferably, it also includes two support parts arranged in sequence along the first direction, and the core mold body is arranged between the two support parts; the core mold body is provided with support columns at both ends in the first direction, and each support column is rotatably connected to the two support parts.

[0013] A mold comprises the core mold assembly as above and also comprises a molding outer mold; the molding outer mold comprises two molding half molds, the two molding half molds are arranged in sequence along a direction perpendicular to the first direction, and a split mold cavity is respectively provided on the second side surfaces of the two molding half molds, the split mold cavities of the two molding half molds are buckled into a mold cavity, the core mold part extends into the mold cavity, and an installation gap for the material layer is reserved between the mold cavity and the core mold part; on both sides of the split mold cavity on the second side surface are second parting surfaces, the second parting surfaces extend obliquely relative to the first direction, and the two molding half molds can slide relative to each other relative to the extension direction of the second parting surfaces to adjust the cross-sectional size of the mold cavity perpendicular to the first direction.

[0014] Preferably, the two molding half molds are respectively a first half mold and a second half mold, and second protrusions are respectively provided on the second parting surface of the first half mold on both sides of the parting cavity, and second grooves are respectively provided on the second parting surface of the second half mold on both sides of the parting cavity, and the second protrusions and the second grooves are correspondingly plugged into each other and can slide relatively along the extension direction of the second parting surface; on the first half mold, a glue overflow groove is also provided on the second parting surface between the second protrusion and the parting cavity.

[0015] A column processing method uses the above core mold assembly, and the processing method includes: arranging material layers in sequence outside the core mold body, installing the molding outer mold, and then performing solidification molding of the material layer; first controlling the demolding of the molding outer mold, and then controlling the demolding of the core mold body; wherein, the demolding of the core mold body includes: first controlling the relative sliding of the two core mold half molds relative to the extension direction of the first parting surface to reduce the cross-sectional area of ​​the core mold body perpendicular to the first direction, and extracting the core mold body from the material layer along the first direction for demolding.

[0016] Preferably, the molding outer mold includes two molding half molds, and the two molding half molds are arranged in sequence along a direction perpendicular to the first direction. Parting cavities are respectively provided on the second side surfaces of the two molding half molds. The parting cavities of the two molding half molds are buckled into a molding cavity, and the core mold part extends into the molding cavity, and the second parting surfaces are located on both sides of the parting cavity on the second side surface, and the second parting surfaces extend obliquely relative to the first direction; the installation of the molding outer mold includes: first controlling the two molding half molds to slide relative to the extension direction of the second parting surface to adjust the cross-sectional size of the molding cavity perpendicular to the first direction, so that the size of the molding cavity is adapted to the outer circumferential size of the column to be formed.

[0017] Preferably, after the material layers are sequentially arranged outside the core mold body and the molding outer mold is installed, the material layer is cured and molded, including: closing the two core mold halves of the core mold body; arranging a first vacuum bag outside the core mold body; attaching a release cloth outside the first vacuum bag; laying prepreg outside the release cloth to form a material layer, and during the laying process, performing one or more vacuum bag operations to compact the prepreg; buckling the two mold cavities of the molding half molds to the outside of the material layer to form a mold cavity; arranging a second vacuum bag between the end faces of the molding outer mold at both ends along the first direction and the first vacuum bag, so that a cavity to be pressed is formed between the second vacuum bags at both ends, the outside of the first vacuum bag and the inside of the mold cavity, and evacuating the second vacuum bag to pressurize the cavity to be pressed; and performing a curing operation to form a column.

[0018] The core mold assembly provided by the present invention includes a core mold part, the core mold part includes a core mold body, the core mold body includes two core mold halves, the two core mold halves are arranged in sequence along a direction perpendicular to a first direction, and the first parting surfaces of the two core mold halves extend obliquely relative to the first direction; the two core mold halves can slide relative to the extension direction of the first parting surface to adjust the cross-sectional size of the core mold body perpendicular to the first direction.

[0019] The core mold assembly includes a core mold body that includes relatively movable split core mold halves, which can be dislocated by relative sliding after mold closing to reduce the peripheral size, so that a certain demolding gap can be generated between the inner periphery of the solidified column and the outer periphery of the core mold body, thereby reducing the demolding resistance. In addition, the two core mold halves can also be demolded separately, thereby reducing the difficulty of demolding the core mold body. In addition, based on the adjustability of the cross-sectional size of the core mold body, the relative positions of the two core mold halves can be adaptively adjusted according to the processing size requirements of the inner hole of the column, thereby improving the applicability and versatility of the core mold body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0021] Figure 1 A front view of the core mold body according to a specific embodiment of the present invention;

[0022] Figure 2 for Figure 1 AA cross-section of

[0023] Figure 3 for Figure 2 Enlarged view of point B;

[0024] Figure 4 A top view of the core mold body of a specific embodiment provided by the present invention;

[0025] Figure 5 A side view of a core mold body according to a specific embodiment of the present invention;

[0026] Figure 6 This is an isometric view of the core mold body and the connecting portion of the specific embodiment provided by the present invention after being connected;

[0027] Figure 7 This is a front view of the core mold body and the connecting part after being connected to the specific embodiment provided by the present invention;

[0028] Figure 8 A top view of the core mold body and the connecting portion of a specific embodiment provided by the present invention after being connected;

[0029] Figure 9 A side view of the core mold body and the connecting portion after being connected to each other according to a specific embodiment of the present invention;

[0030] Figure 10 This is an isometric view of a connection portion and a support portion of a specific embodiment provided by the present invention;

[0031] Figure 11 A top view of the connecting portion and the supporting portion of a specific embodiment provided by the present invention after being connected;

[0032] Figure 12 This is a front view of the connecting portion and the supporting portion of the specific embodiment provided by the present invention after being connected;

[0033] Figure 13 A side view of the connecting portion and the supporting portion of a specific embodiment provided by the present invention after being connected;

[0034] Figure 14 An isometric view of a core mold assembly according to a specific embodiment of the present invention;

[0035] Figure 15 A top view of a core mold assembly according to a specific embodiment of the present invention;

[0036] Figure 16 A front view of a core mold assembly according to a specific embodiment of the present invention;

[0037] Figure 17 A side view of a core mold assembly according to a specific embodiment of the present invention;

[0038] Figure 18 An isometric view of a core mold assembly and a forming mold half assembled according to a specific embodiment of the present invention;

[0039] Figure 19 for Figure 18 A partial enlarged view of

[0040] Figure 20 This is an isometric view of the core mold assembly of a specific embodiment provided by the present invention after being installed in the mold cavity;

[0041] Figure 21 This is an isometric view of the outer mold of the specific embodiment provided by the present invention after being connected to the outer mold connector;

[0042] Figure 22 This is a front view of the outer molding die of the specific embodiment provided by the present invention after being connected to the second vacuum bag;

[0043] Figure 23 A top view of the outer molding die of a specific embodiment provided by the present invention after being connected to a second vacuum bag;

[0044] Figure 24 A schematic diagram illustrating the principle of relative movement of two core mold halves to adjust the size of the outer circumference and volume of a specific embodiment provided by the present invention;

[0045] Figure 25 This is a schematic diagram of the principle of relative movement of two molding half-molds to adjust the size of the cavity according to a specific embodiment of the present invention.

[0046] Reference numerals:

[0047] Core mold part 1;

[0048] Core mold body 11, core mold half 111, first parting surface 112, first groove 113, first protrusion 114, core mold fastening hole 115, first fastener 116, first hole 117, second hole 118;

[0049] Connecting portion 12, core mold connecting plate 121, first top screw 122, second fastener 123, support column 124, fourth fastener 125;

[0050] Material layer 2;

[0051] Support portion 3;

[0052] Release cloth 4;

[0053] First vacuum bag 5;

[0054] Molding outer mold 6, mold cavity 61, parting cavity 611, glue overflow groove 62, molding half mold 63, second parting surface 64, second groove 65, second protrusion 66, outer mold connector 67, outer mold end cover 671, third fastener 672, first sealing strip 68, second sealing strip 69;

[0055] Second vacuum bag 7;

[0056] Vacuum line 8. DETAILED DESCRIPTION

[0057] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0058] The core of the present invention is to provide a core mold assembly, a mold and a column processing method, and the core mold demoulding is relatively easy.

[0059] For the specific embodiment of the core mold assembly provided by the present invention, please refer to Figures 1 to 25 , including a core mold part 1, the core mold part 1 includes a core mold body 11, the outer periphery of the core mold body 11 is used for paving materials to form a material layer 2, and the material layer 2 forms a column after solidification, and the core mold body 11 is used to form the inner hole of the column, and the material is a composite material, such as a resin-based composite material.

[0060] The core mold body 11 includes two core mold halves 111, and the two core mold halves 111 are arranged in sequence along a direction perpendicular to the first direction X, for example Figure 1 The first parting surfaces 112 of the two core mold halves 111 extend obliquely relative to the first direction X. Figure 1 The dotted line in FIG. 1 corresponds to the first direction X, and the first parting surfaces 112 of the two core mold half molds 111 are inclined relative to the dotted line.

[0061] The two core mold halves 111 can slide relative to each other in the extension direction of the first parting surface 112 to adjust the cross-sectional size of the core mold body 11 perpendicular to the first direction X. Figure 24 As shown in the schematic diagram, when the upper core mold half 111 moves relative to the lower core mold half 111 to the position corresponding to the solid line, the cross section is a, and when it moves to the dotted line position, the cross section becomes a smaller a1.

[0062] In this embodiment, the core mold body 11 includes a relatively movable split core mold half 111, which can be dislocated by relative sliding after the mold is closed to reduce the outer peripheral size, so that a certain demolding gap can be generated between the inner periphery of the solidified column and the outer periphery of the core mold body 11, thereby reducing the demolding resistance. In addition, the two core mold half molds 111 can also be demolded separately, thereby reducing the difficulty of demolding the core mold body 11. In addition, based on the adjustability of the cross-sectional size of the core mold body 11, the relative positions of the two core mold half molds 111 can be adaptively adjusted according to the processing size requirements of the inner hole of the column, thereby improving the applicability and versatility of the core mold body 11.

[0063] Further, in the core mold body 11, as Figure 2 and Figure 5 As shown, a first protrusion 114 is provided on the first parting surface 112 of one core mold half 111, and a first groove 113 is provided on the first parting surface 112 of the other core mold half 111. The first protrusion 114 and the first groove 113 are pluggably engaged with each other and can slide relative to each other along the extension direction of the first parting surface 112. The pluggable engagement between the first protrusion 114 and the first groove 113 acts as a guide, ensuring that the two core mold halves 111 can accurately move relative to each other along their extension directions.

[0064] It should be noted that the first parting surfaces 112 of the two core mold halves 111 are adaptable surfaces that fit together and extend in the same direction, specifically, along a straight line. For example, the angle between the extension direction and the first direction X is ≤10°. Furthermore, the first direction X, the second direction Y, and the extension direction of the first parting surface 112 may all be perpendicular to the third direction Z.

[0065] The first direction X, the second direction Y, and the third direction Z are three directions perpendicular to each other.

[0066] In addition, to ensure that the two core mold halves 111 can move relative to each other along the extension direction of the first parting surface 112 to adjust the cross-sectional size of the outer periphery of the core mold body 11, the cross-sections of the first parting surface 112 at all locations parallel to the first direction X can be parallel straight lines, and the extension direction of the straight lines is the extension direction of the first parting surface 112 inclined relative to the first direction X. For example, the first parting surface 112 can be a planar structure; or, in a direction perpendicular to the first direction X, the first parting surface 112 is composed of a plurality of first parting surfaces arranged in sequence. Figure 2 This can be considered as the case where the boundary lines between the first facets are parallel straight lines and are inclined relative to the first direction X. In addition, when it is necessary to provide the first protrusion 114 or the first groove 113, they are directly provided on the first parting surface 112, and the thickness of the first protrusion 114 and the depth of the first groove 113 can be the same everywhere.

[0067] In some embodiments, as Figure 2 As shown, the first protrusion 114 and the first groove 113 can be centrally located on the corresponding first parting surface 112 , and the cross-section of the first protrusion 114 and the first groove 113 perpendicular to the first direction X can be rectangular, or arc-shaped in other embodiments.

[0068] In some embodiments, as Figure 2 As shown, one first protrusion 114 and one first groove 113 can be provided; in other embodiments, multiple first protrusions 114 can also be provided, and can be arranged in sequence along the third direction Z; the first groove 113 and the first protrusion 114 are provided in a one-to-one correspondence.

[0069] In some embodiments, as Figure 2 and Figure 6 As shown, of the side surfaces of the core mold half 111 around its centerline parallel to the first direction X, except for the first parting surface 112, the remaining side surfaces are planes parallel to the first direction X. In this case, each core mold half 111 has a wedge-shaped structure. Therefore, after the two core mold half 111 are molded together, the outer circumference of the core mold body 11 is a rectangular surface, which can be used to form a square inner hole of the cylinder. Of course, as needed, in other embodiments, the outer circumference of the molded core mold body 11 can also be a cylindrical surface to form a circular inner hole of the cylinder.

[0070] Furthermore, in order to ensure the stable clamping of the two core mold half molds 111, in the arrangement direction of the two core mold half molds 111, as shown in FIG. Figure 1 In the second direction Y, the two core mold halves 111 are provided with correspondingly connected core mold fastening holes 115, and are pre-fixed by first fasteners 116 to close the mold. At this time, the outer circumference size of the two core mold halves 111 is substantially consistent with the size of the inner hole to be machined into the column.

[0071] Furthermore, to pressurize the material layer 2 during curing, the core mold portion 1 may also include a first vacuum bag 5. The first vacuum bag 5 is cylindrical and is positioned outside the core mold body 11. Preferably, the first vacuum bag 5 is elastic and can fully conform to the outer periphery of each core mold half 111.

[0072] Among them, a certain mold gap can be set after the two core mold halves 111 are molded together, and the size can be between 0.3 and 0.7, for example Figure 3 A 0.5mm mold gap is created to facilitate inflation and pressurization of the first vacuum bag 5. Specifically, this mold gap is achieved by adjusting the positional relationship between the first fastener 116 and the two core mold halves 111. During curing, pressurized air can be introduced into the first vacuum bag 5 to pressurize the inner periphery of the material layer 2.

[0073] In some embodiments, to further facilitate demoulding, as Figure 14 As shown, the outer layer of the core mold part 1 can also be provided with a demoulding cloth 4, specifically provided on the outer layer of the first vacuum bag 5. When the core mold body 11 is demoulded, other parts in the core mold part 1 can also be demoulded along with the core mold half mold 111.

[0074] During assembly, a release cloth 4 is laid on the outer peripheral surface of the first vacuum bag 5 , and the release cloth 4 can be glued and connected to the first vacuum bag 5 , and the material is laid on the outer side of the release cloth 4 to form a material layer 2 .

[0075] Furthermore, the core mold assembly further includes a connecting portion 12, which is provided on one side of the core mold body 11 in the first direction X and can be used to achieve a fixed connection between the two core mold halves 111 and assist the relative sliding of the two core mold halves 111. Figures 6 to 8 As shown, a connecting portion 12 is provided on both sides of the core mold body 11 in the first direction X.

[0076] In some embodiments, as Figure 8 As shown, the connecting portion 12 includes a core mold connecting plate 121 and a first push screw 122 movably connected to the core mold connecting plate 121, and the movable direction can be a first direction X. The core mold connecting plate 121 is fixedly connected to one core mold half 111 and can provide a thrust to the other core mold half 111 through the movement of the first push screw 122 along the first direction X.

[0077] At this time, the positional relationship between the core mold connecting plate 121 and one core mold half mold 111 in the first direction X remains unchanged. By moving the first top screw 122 relative to the core mold connecting plate 121, the other core mold half mold 111 is moved along the first parting surface 112, thereby achieving the misalignment of the two first parting surfaces 112 and the two core mold half molds 111.

[0078] It should be noted that when the two core mold half molds 111 move relative to each other to be displaced along the first direction X, the first parting surfaces 112 of the two core mold half molds 111 can remain in contact, that is, the first parting surface 112 of one core mold half mold 111 moves against the first parting surface 112 of the other core mold half mold 111.

[0079] Exemplarily, the first top screw 122 is a threaded fastener such as a bolt, which is rotated relative to the threaded hole on the core mold connecting plate 121 to achieve contact with its top end and push the corresponding core mold half mold 111 to move; alternatively, the first top screw 122 can also be a retractable rod.

[0080] In addition, when the first top screw 122 is no longer needed to push the core mold half mold 111, the core mold connecting plate 121 can also fix the two core mold half molds 111 to achieve the purpose of fixing the two core mold half molds 111, and release the connection with each core mold half mold 111 as needed.

[0081] Specific as Figures 6 to 9 As shown, the core mold connecting plate 121 is fixedly connected to the first core mold half mold by the second fastener 123, and is fixedly connected to the second core mold half mold by the fourth fastener 125. The first push screw 122 is used to push the second core mold half mold. The second fastener 123 and the fourth fastener 125 are bolts or screws, which realize the fixation of the two core mold half molds 111 by the connecting part 12; when the first push screw 122 is needed to push the second core mold half mold, the fourth fastener 125 is removed, and usually the first fastener 116 also needs to be removed, and then the first push screw 122 is pushed out.

[0082] It can be understood that the above process describes the process of ejecting the single-sided connecting part 12. When the connecting parts 12 are set at both ends of the core mold body 11, the first push screw 122 on the other side is used to push the first core mold half mold. The core mold connecting plate 121 is connected to the second core mold half mold through the second fastener 123 and to the first core mold half mold through the fourth fastener 125. Then, the corresponding fourth fastener 125 and the first fastener 116 can be installed and removed according to the action requirements of the core mold half mold 111.

[0083] In some embodiments, as Figure 5 As shown, the core mold half 111 is provided with threaded holes at both ends in the first direction X. One end is a first hole 117 for connecting the second fastener 123, and the other end is a second hole 118 for connecting the fourth fastener 125. Since the fourth fastener 125 needs to be removed, the number of second holes 118 can be less than the number of first holes 117. For example, there can be four first holes 117 and two second holes 118.

[0084] In some embodiments, the core mold connecting plate 121 is a metal plate to ensure structural strength; in other embodiments, composite material plates may also be used.

[0085] In some embodiments, to facilitate rotation of the core mold assembly, facilitate laying materials in different directions, and improve laying efficiency, support columns 124 may be provided at both ends of the core mold assembly in the first direction X for rotational connection to other supporting structures. Specifically, the support columns 124 are provided on the core mold connecting plate 121 and are specifically fixedly connected thereto. More specifically, they may be integrally formed or welded to the core mold connecting plate 121. For example, the support columns 124 are metal cylinders.

[0086] In addition, the rotation center line of the core mold part 1 is parallel to the first direction X. Accordingly, the support column 124 is a cylinder whose axis is parallel to the first direction X.

[0087] Furthermore, the core mold assembly also includes two supporting parts arranged in sequence along the first direction X. The core mold body 11 is arranged between the two supporting parts and is used to serve as a support to support the core mold part 1 to facilitate the rotation of the core mold part 1.

[0088] like Figures 10 to 16 As shown, the support columns 124 at both ends of the core mold body 11 in the first direction X are rotatably connected to the two support parts 3. Specifically, the support columns 124 can overlap the top grooves of the corresponding support parts 3, allowing the core mold body 11 to rotate while facilitating the assembly and disassembly of the core mold body 11 and the support parts 3. During the assembly process, after the first vacuum bag 5 and mold release cloth 4 are installed in the core mold part 1, they are then installed on the two support parts, and the column layer is laid.

[0089] In addition to the above-mentioned core mold assembly, the present invention also provides a mold, which includes a core mold assembly. The core mold assembly can specifically be the core mold assembly provided in any of the above embodiments, and the beneficial effects can be referred to the above embodiments accordingly.

[0090] Specifically, if Figures 10 to 23 As shown, the mold further includes a forming outer mold 6. The forming outer mold 6 is used to be arranged outside the core mold part 1, and an installation gap for the material layer 2 is reserved between the mold cavity 61 of the forming outer mold 6 and the core mold part 1 for placing the material layer 2.

[0091] like Figures 18 to 23 As shown, the outer molding mold 6 includes two molding half molds 63 , and the two molding half molds 63 are sequentially arranged along a direction perpendicular to the first direction X, for example, along the third direction Z.

[0092] A split mold cavity 611 is respectively provided on the second side surfaces of the two molding half molds 63 , and the split mold cavities 611 of the two molding half molds 63 are buckled to form the molding cavity 61 .

[0093] On the second side, on both sides of the parting cavity 611 are second parting surfaces 64, which extend obliquely relative to the first direction X. The two molding halves 63 can slide relative to each other relative to the extension direction of the second parting surfaces 64 to adjust the cross-sectional size of the cavity 61 perpendicular to the first direction X. Figure 25 Schematic diagram, when the upper molding half mold 63 moves relative to the lower molding half mold 63 to the position corresponding to the solid line, the cross-section of the cavity 61 is b, and when it moves to the dotted line position, the cross-section of the cavity 61 becomes a larger b1.

[0094] In this embodiment, the outer molding mold 6 includes two relatively movable split molding half molds 63, which can be dislocated by relative sliding after the mold is closed to increase or reduce the size of the cavity 61, so that the inner periphery of the cavity 61 can adapt to the processing size requirements of the outer periphery of the column, thereby improving the applicability and versatility of the molding mold 6.

[0095] Further, in the outer molding die 6, as Figures 18 to 20 As shown, the two molding halves 63 are respectively a first mold half and a second mold half. The first mold half has second protrusions 66 on its second parting surface 64, located on either side of the parting cavity 611. The second mold half has second grooves 65 on its second parting surface 64, located on either side of the parting cavity 611. The second protrusions 66 and second grooves 65 are correspondingly engaged and can slide relative to each other along the extension direction of the second parting surface 64. The second protrusions 66 and second grooves 65 serve as guides, ensuring that the two molding halves 63 move relative to each other along their extension direction.

[0096] It should be noted that the second parting surfaces 64 of the two mold halves 63 are adaptable surfaces that fit together and extend in the same direction, specifically, along a straight line. For example, the angle between the extension direction and the first direction X is ≤10°. Furthermore, the first direction X, the third direction Z, and the extension direction of the second parting surface 64 may all be perpendicular to the second direction Y.

[0097] Furthermore, to ensure that the two mold halves 63 can move relative to each other along the extension direction of the second parting surface 64 to adjust the cross-section of the cavity 61, the cross-sections of the second parting surface 64 at all locations parallel to the first direction X can be parallel straight lines, with the extension direction of these straight lines being the extension direction of the second parting surface 64, which is inclined relative to the first direction X. For example, the second parting surface 64 can be a planar structure; alternatively, the second parting surface 64 can be formed by a plurality of second facets arranged sequentially in a direction perpendicular to the first direction X, with the boundaries between the second facets being parallel straight lines that are inclined relative to the first direction X. Furthermore, when a second protrusion 66 or a second groove 65 is required, it can be directly formed on the second parting surface 64, and the thickness of the second protrusion 66 and the depth of the second groove 65 can be uniform at all locations.

[0098] In addition, when the outer circumferential dimensions of the two molding half molds 63 are adjusted, and the two core mold half molds 111 move relative to each other to be displaced along the first direction X, the second parting surfaces 64 of the two molding half molds 63 can remain in contact, that is, the second parting surface 64 of one molding half mold 63 moves against the second parting surface 64 of the other molding half mold 63.

[0099] In some embodiments, as Figures 18 to 20 As shown, a second protrusion 66 and a second groove 65 may be provided on both sides of the cavity 61, and the cross-section of the second protrusion 66 and the second groove 65 perpendicular to the first direction X may be rectangular; in other embodiments, they may be arc-shaped.

[0100] In some embodiments, as Figures 18 to 20 As shown, two second protrusions 66 can be provided and two second grooves 65 can be provided; in other embodiments, only one or more than two second protrusions 66 can be provided, and they can be arranged in sequence along the second direction Y. In addition, the second grooves 65 and the second protrusions 66 are provided in a one-to-one correspondence.

[0101] In some embodiments, all side surfaces of the split mold cavity 611 parallel to the first direction X are planes parallel to the first direction X, so that the circumferential surface of the cavity 61 is a rectangular surface, which can be used to form a square outer circumferential surface of a cylinder; of course, as needed, in other embodiments, the circumferential surface of the cavity 61 can also be set as a cylindrical surface, thereby forming a cylindrical outer circumferential surface of a cylinder.

[0102] In some embodiments, as Figure 19 As shown, on the first half mold, an overflow groove 62 is provided between the second protrusion 66 and the parting cavity 611 on the second parting surface 64 to facilitate the discharge of excess glue.

[0103] In addition to the above-mentioned core mold assembly and mold, the present invention also provides a column processing method, which can specifically apply the core mold assembly or mold provided in any of the above embodiments, and the beneficial effects can be referred to the above embodiments accordingly.

[0104] The processing method comprises the following steps:

[0105] S1: After sequentially arranging the material layer 2 outside the core mold body 11 and installing the molding outer mold 6, the material layer 2 is solidified and molded.

[0106] S2: Control the demoulding of the outer molding die 6.

[0107] For example, the outer molding die 6 can be detached by a tool such as a second push screw.

[0108] S3: Control the core mold body 11 to be demoulded.

[0109] Exemplarily, demolding the core mold body 11 includes: first controlling the two core mold half molds 111 to slide relative to each other in the extension direction of the first parting surface 112 to reduce the cross-sectional area of ​​the core mold body 11 perpendicular to the first direction X, and pulling the core mold body 11 out of the material layer 2 along the first direction X for demolding. Specifically, the entire core mold part 1 can be demolded.

[0110] For example, the core mold body 11 can be demoulded by cooperating the core mold connecting plate 121 installed at the end of the core mold body 11 with the first top screw 122, so that the two core mold half molds 111 are offset from each other, thereby reducing the volume of the core mold assembly.

[0111] In this embodiment, the core mold half mold 111 can be dislocated by relative sliding to reduce the outer peripheral size, so that a certain demolding gap can be generated between the inner periphery of the solidified column and the outer periphery of the core mold main body 11, thereby reducing the demolding resistance. In addition, the two core mold half molds 111 can also be demolded separately, thereby reducing the difficulty of demolding the core mold main body 11.

[0112] Furthermore, S1 includes:

[0113] S11: The two core mold halves 111 of the core mold body 11 are closed.

[0114] For example, according to the inner hole size requirements of the column to be formed, the relative positions of the two core mold halves 111 in the first direction X can be adjusted so that the cross-sectional area of ​​the core mold body 11 perpendicular to the first direction X matches the processing requirements of the inner hole area of ​​the column.

[0115] For example, after the relative positions of the two core mold halves 111 are determined, they are fastened together by the first fastener 116. Figure 14 As shown, the first fastener 116 is arranged in the area of ​​the core mold half mold 111 close to the end face in the first direction X. Specifically, it can always remain exposed and not be blocked by other structures in the core mold assembly, the material layer 2 and the molding outer mold 6, so that the first fastener 116 can be removed during demolding, so that the two core mold half molds 111 can move smoothly.

[0116] S12: A first vacuum bag 5 is placed outside the core mold body 11 .

[0117] Exemplarily, the first vacuum bag 5 is an elastic sleeve vacuum bag, which is directly put on the outside of the core mold body 11 after the mold is closed. The first vacuum bag 5 is in close contact with the outer peripheral surface of the core mold body 11 and can specifically provide a certain elastic pressure to the core mold body 11.

[0118] S13: placing a release cloth 4 on the outside of the first vacuum bag 5 .

[0119] For example, the release cloth 4 is pasted on the outer surface of the first vacuum bag 5. Figures 18 to 20As shown, in the first direction X, the demoulding cloth 4 protrudes from both ends of the material layer 2, the first vacuum bag 5 protrudes from both ends of the demoulding cloth 4, and the core mold body 11 protrudes from both ends of the first vacuum bag 5, which is conducive to ensuring the smooth dislocation of the core mold half mold 111 and facilitating demoulding.

[0120] S14: Prepreg is laid on the outside of the release cloth 4 to form a material layer 2.

[0121] Exemplarily, the material is a prepreg or fabric prepreg. The prepreg can be laid at multiple angles to meet the multi-directional comprehensive mechanical performance requirements of the column. The material can be laid manually.

[0122] Specifically, before paving, Figure 16 and Figure 17 As shown, the core mold body 11 is first connected or placed on the support part 3, which can realize the free rotation of the core mold body 11. The rotation angle can be 360 ​​degrees, which is convenient for laying prepreg at different angles. The material layer 2 formed after the material is laid is the column layer.

[0123] In addition, in order to ensure that the prepregs fit tightly together, avoid gaps or bubbles, remove excess resin, and enhance interlayer bonding, one or more vacuum bags can be used to compact the prepregs during the paving process. Specifically, a compaction operation can be performed after each paving of the same number of prepreg layers or the same time. The compaction time and temperature can be set as needed, for example, 5 to 10 minutes each time.

[0124] For example, during the compaction operation, 0° / 90° prepreg with a thickness of 0.2 mm is laid on the outside of the release cloth 4 in the 0° and 45° laying directions in turn. After every 5 layers of prepreg, a vacuum bag is opened to compact the prepreg, and a total of 40 layers are laid.

[0125] S15 : snapping the split mold cavities 611 of the two forming half molds onto the outside of the material layer 2 to form a mold cavity 61 .

[0126] Exemplarily, the two molding half molds 63 are first coated with a release agent, and after the core mold body 11 is installed on the lower molding half mold 63 , the other molding half mold is installed on the lower molding half mold to form the mold cavity 61 .

[0127] Exemplarily, the step of installing the outer molding mold 6 includes: first controlling the relative sliding of the two molding half molds 63 relative to the extension direction of the second parting surface 64 to adjust the cross-sectional size of the mold cavity 61 perpendicular to the first direction X, so that the size of the mold cavity 61 is adapted to the outer peripheral size of the column to be formed, and can meet the processing requirements of the outer shape of the column with different outer peripheral sizes.

[0128] For example, after the two molding half molds 63 are fastened together, there may be a mold gap between the second parting surface 64, which needs to be sealed. The sealing can be achieved by setting a sealing strip at the mold gap. Figure 22 As shown, first sealing strips 68 are respectively provided at the mold closing positions on both sides of the two molding half molds 63 in the second direction Y.

[0129] For example, in order to achieve a fixed connection between the two forming half-molds 63 , the mold may further include an outer mold connector 67 , which fixedly connects the two forming half-molds 63 .

[0130] In some embodiments, as Figure 21 As shown, two outer mold connectors 67 are located at both ends of the outer mold 6 in the first direction X. The outer mold connectors 67 include outer mold end caps 671 and third fasteners 672. The outer mold end caps 671 are annular in structure. The end of the core mold portion 1 extending out of the mold cavity 61 passes through the through hole of the outer mold end caps 671. The outer mold end caps 671 fit over the two molding half-molds 63 and are fixedly connected to both molding half-molds 63 via third fasteners 672. The third fasteners 672 are threaded structures such as bolts and screws.

[0131] In some embodiments, the outer mold connector 67 may also be configured to fixedly connect the two molding half-molds 63 along the third direction Z, ie, the arrangement direction of the two molding half-molds 63 . For example, threaded fasteners such as screws or bolts may be directly used.

[0132] In some embodiments, in order to eliminate the mold gap between the two outer molds at the ends in the first direction X, the outer mold connector 67 may be an F-clip.

[0133] S16: A second vacuum bag 7 is arranged between the end surfaces of the outer molding die 6 at both ends along the first direction X and the first vacuum bag 5, so that a cavity to be pressed is formed between the second vacuum bags 7 at both ends, the outer side of the first vacuum bag 5 and the inner side of the cavity 61, and the second vacuum bag 7 is evacuated to pressurize the cavity to be pressed.

[0134] For example, Figure 22 and Figure 23 As shown, the second vacuum bag 7 is sealed to the end surface of the outer molding mold 6 in the first direction X and the portion of the first vacuum bag 5 extending out of the molding cavity 61 through the second sealing strip 69 to form a closed cavity to be pressed.

[0135] For example, Figure 23 As shown, the second vacuum bag 7 is connected to the vacuum pipeline 8 , and the second vacuum bag 7 is evacuated through the vacuum pipeline 8 .

[0136] S17: performing a curing operation to form a column.

[0137] For example, the bagged outer mold 6 and the structure thereon are integrally sent into a curing furnace or an autoclave for pressure curing. Specifically, the curing and molding can be performed according to set requirements.

[0138] For example, during the curing process, external pressure air may be controlled to enter the first vacuum bag 5 to provide pressure to the material layer 2 from the inside of the material layer 2 for pressurized curing.

[0139] In addition, in subsequent production, the relative positions of the core mold and the outer molding mold 6 can be adjusted according to the wall thickness requirements of the columns to be produced later to meet the column processing size requirements.

[0140] The processing method in the embodiment of the present invention can realize the low-cost and high-efficiency thick-walled hollow mouth column molding, for example, it is suitable for the molding of bus waiting hall columns. Among them, the core mold assembly used for paving adopts a wedge-shaped split core mold half mold 111, which can adjust the size of the outer periphery to adapt to the processing requirements of the column cavity; the core mold half mold 111 can connect the two split core molds together through the connecting part 12, and can be installed on the support part 3 through the connecting part 12. The core mold assembly can be rotated, and the prepreg can be easily laid on the core mold assembly at different laying angles; after the prepreg is laid on the core mold assembly, it is installed to the molding outer mold 6, wherein the two molding half molds 63 can be offset with each other, so that the cavity 61 can match the outer dimensions of the column, and then be molded in a curing furnace; after the column is formed, the two core molds can be ejected through the connecting part 12 at the end of the core mold assembly, so that the two core mold half molds 111 can be staggered and taken out separately. This method is simple to operate, simple to demould, high in molding quality, and strong in versatility.

[0141] It should be noted that when an element is referred to as being "fixed" to another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected" to another element, it may be directly connected to the other element or there may be an intermediate element. In addition, in the description of the present invention, unless otherwise specified, "plurality," "plurality," and "plurality of groups" mean two or more.

[0142] Terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicate positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate and simplify the description of the present invention and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features referred to.

[0143] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in this specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0144] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0145] The core mold assembly, mold, and column processing method provided by the present invention are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core concept of the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A core mold assembly, characterized in that: The core mold part (1) includes a core mold body (11), the core mold body (11) includes two core mold halves (111), the two core mold halves (111) are arranged in sequence along a direction perpendicular to a first direction (X), and the first parting surfaces (112) of the two core mold halves (111) extend obliquely relative to the first direction (X); The two core mold half molds (111) can slide relative to each other in the extension direction of the first parting surface (112) to adjust the cross-sectional size of the core mold body (11) perpendicular to the first direction (X).

2. The core mold assembly according to claim 1, characterized in that The first parting surfaces (112) of the two core mold half molds (111) are respectively provided with a first protrusion (114) and a first groove (113) for plug-fitting, and the first protrusion (114) and the first groove (113) can slide relatively along the extension direction of the first parting surface (112).

3. The core mold assembly according to claim 1, characterized in that The core mold part (1) further comprises a first vacuum bag (5); the first vacuum bag (5) is cylindrical and elastic, and the first vacuum bag (5) is sleeved on the outside of the core mold body (11).

4. The core mold assembly according to claim 1, characterized in that It also includes a connecting portion (12) provided on one side of the core mold body (11) in the first direction (X); The connecting portion (12) comprises a core mold connecting plate (121) and a first top screw (122) movably connected to the core mold connecting plate (121); the core mold connecting plate (121) is fixedly connected to one of the core mold half molds (111) and can provide a thrust to the other core mold half mold (111) by moving the first top screw (122) along the first direction (X).

5. The core mold assembly according to claim 1, characterized in that It also includes two support parts (3) arranged in sequence along the first direction (X), and the core mold body (11) is arranged between the two support parts (3); the core mold body (11) is provided with support columns (124) at both ends in the first direction (X), and each support column (124) is rotatably connected to the two support parts (3).

6. A mold, characterized in that: It comprises the core mold assembly according to any one of claims 1 to 5, and further comprises a forming outer mold (6); The outer molding die (6) comprises two molding half-molds (63), the two molding half-molds (63) are arranged in sequence along a direction perpendicular to the first direction (X), and split mold cavities (611) are respectively provided on the second side surfaces of the two molding half-molds (63), the split mold cavities (611) of the two molding half-molds (63) are buckled to form a molding cavity (61), the core mold part (1) extends into the molding cavity (61), and an installation gap for the material layer (2) is reserved between the molding cavity (61) and the core mold part (1); On the second side surface, located on both sides of the parting cavity (611) are second parting surfaces (64), which extend obliquely relative to the first direction (X). The two molding half molds (63) can slide relative to the extension direction of the second parting surface (64) to adjust the cross-sectional size of the cavity (61) perpendicular to the first direction (X).

7. The mold according to claim 6, characterized in that The two molding half molds (63) are respectively a first half mold and a second half mold; the second parting surface (64) of the first half mold is provided with second protrusions (66) on both sides of the parting cavity (611); the second parting surface (64) of the second half mold is provided with second grooves (65) on both sides of the parting cavity (611); the second protrusions (66) and the second grooves (65) are plug-fitted to each other and can slide relative to each other along the extension direction of the second parting surface (64); On the first half mold, a glue overflow groove (62) is also provided on the second parting surface (64) between the second protrusion (66) and the parting cavity (611).

8. A column processing method, characterized in that: Applying the core mold assembly according to any one of claims 1 to 5, the processing method comprises: After sequentially arranging a material layer (2) outside the core mold body (11) and installing a molding outer mold (6), the material layer (2) is solidified and molded; First, the outer molding mold (6) is controlled to be demoulded, and then the core mold body (11) is controlled to be demoulded; The demoulding of the core mold body (11) comprises: first controlling the two core mold half molds (111) to slide relative to each other in the extension direction of the first parting surface (112) to reduce the cross-sectional area of ​​the core mold body (11) perpendicular to the first direction (X), and then extracting the core mold body (11) from the material layer (2) along the first direction (X) for demoulding.

9. The column processing method according to claim 8, characterized in that: The outer molding mold (6) comprises two molding half molds (63), the two molding half molds (63) are arranged in sequence along a direction perpendicular to the first direction (X), a split mold cavity (611) is respectively provided on the second side surfaces of the two molding half molds (63), the split mold cavities (611) of the two molding half molds (63) are buckled to form a molding cavity (61), the core mold portion (1) extends into the molding cavity (61), and on both sides of the split mold cavity (611) on the second side surface are second parting surfaces (64), and the second parting surfaces (64) extend obliquely relative to the first direction (X); The installation of the outer molding mold (6) comprises: first controlling the two molding half molds (63) to slide relative to each other in the extension direction of the second parting surface (64) to adjust the cross-sectional size of the molding cavity (61) perpendicular to the first direction (X) so that the size of the molding cavity (61) is adapted to the outer peripheral size of the column to be molded.

10. The column processing method according to claim 8, characterized in that: After sequentially arranging the material layer (2) outside the core mold body (11) and installing the outer molding mold (6), the material layer (2) is solidified and molded, including: Clamping the two core mold halves (111) of the core mold body (11); A first vacuum bag (5) is provided outside the core mold body (11); A release cloth (4) is attached to the outside of the first vacuum bag (5); Laying prepreg outside the release cloth (4) to form a material layer (2), and during the laying process, performing one or more vacuum bagging operations to compact the prepreg; The split mold cavities (611) of the two molding half molds are buckled onto the outside of the material layer (2) to form a mold cavity (61); A second vacuum bag (7) is provided between the end surfaces of the outer molding die (6) at both ends along the first direction (X) and the first vacuum bag (5), so that a cavity to be pressed is formed between the second vacuum bags (7) at both ends, the outer side of the first vacuum bag (5) and the inner side of the mold cavity (61), and the second vacuum bag (7) is evacuated to pressurize the cavity to be pressed; A curing operation is performed to form the cylinder.

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