Composite material B-shaped beam forming die
By designing a composite material H-beam molding die with a specific structure, the problem of material extrusion during the thermosetting process of existing products has been solved, thus achieving efficient molding and high-quality composite material H-beams.
Patent Information
- Application Number
- CN202422965252.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-03
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2034-12-03
AI Technical Summary
In the existing composite material H-beam compression molding process, the laminated product is prone to material extrusion when heated, resulting in unsatisfactory appearance quality and internal quality problems. This is especially true when the layup is thick, which can easily lead to the scrapping of parts.
A composite material H-beam molding die, comprising a concave cavity mold and a convex cavity mold, was designed. The die is connected by a fastening assembly and features a temperature measuring hole, an overflow groove, a positioning structure, and a mold opening groove. It can prevent material extrusion during the molding process and improve the surface quality and dimensional accuracy.
It achieves efficient molding of composite material H-beams, prevents material extrusion, improves the surface quality and dimensional accuracy of the product, and is simple to operate and easy to demold.
Smart Images
Figure CN223719941U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to resin base composite material mould pressing forming mould field, specifically about a kind of day beam forming mould of composite material. BACKGROUND
[0002] Day structure beam is a kind of force bearing structural member commonly used in composite material structure, has wide application in composite material beam class, and is mainly used in main beam piece in projectile structure, and product structure is mostly foam sandwich structure.
[0003] Beam class mould pressing forming tool is mostly integrated structure, upper die, lower die are parted in the middle of product, and lower die is integrated structure. When mould pressing forms, first, the laying of composite material is carried out on foam core and metal dummy part, then the product after laying is placed into lower die, then upper die is closed, to complete the curing forming of day beam.
[0004] But after laying, product is slightly fatter than theoretical appearance, after being heated, lay-up is softened, and extrusion phenomenon is easily caused. Therefore, after curing, day beam appears the phenomenon that appearance quality does not meet the requirement, internal quality problem is easily generated, especially when product lay-up is thicker, part is easily scrapped.
[0005] Therefore, in view of the above technical problems, it is necessary to provide a day beam forming mould of composite material.
[0006] The information disclosed in this BACKGROUND section is only for the purpose of increasing the understanding of the background of the present utility model and should not be regarded as an acknowledgment or any form of suggestion that this information forms prior art that is publicly known. CONTENT OF UTILITY MODEL
[0007] The utility model aims at providing a day beam forming mould of composite material, which can solve the problems proposed in the above BACKGROUND.
[0008] In order to achieve the above-mentioned purpose, the technical scheme provided by a specific embodiment of the utility model is as follows:
[0009] A day beam forming mould of composite material, comprising concave cavity mould and convex cavity mould, the convex cavity mould is attached to the upper side end face of concave cavity mould, the concave cavity mould and convex cavity mould are attached to form closed cavity matched with day beam;The concave cavity mould comprises first mould petal and second mould petal, the first mould petal and second mould petal are movably connected with fastening assembly, and the first mould petal and second mould petal are connected together by fastening assembly;The opposite end faces of the first mould petal, second mould petal and convex cavity mould are all provided with a plurality of temperature measuring holes.
[0010] In an embodiment of the utility model, the convex cavity mold includes a mold convex part, a groove is formed on the concave cavity mold, the mold convex part is matched with the groove, and the mold convex part is inserted into the groove to form a non-equal cross-section structure cavity.
[0011] In an embodiment of the utility model, the upper side end face of the groove of the concave cavity mold is an inclined chamfer, and the mold convex part is attached to the side wall of the groove.
[0012] In an embodiment of the utility model, the fastening assembly includes a plurality of bolts, a plurality of threaded holes matched with the bolts are formed on the first mold half and the second mold half, and the threaded holes are connected with the bolts.
[0013] In an embodiment of the utility model, a plurality of glue overflow grooves are formed on the convex cavity mold.
[0014] In an embodiment of the utility model, a positioning boss is fixedly connected to one side end face of the second mold half.
[0015] In an embodiment of the utility model, a plurality of positioning guide columns are fixedly connected to one side end face of the second mold half, and a guide column hole matched with the positioning guide column is formed on one side end face of the convex cavity mold.
[0016] In an embodiment of the utility model, a plurality of lifting rings are fixedly connected to the opposite end faces of the concave cavity mold and the convex cavity mold.
[0017] In an embodiment of the utility model, a plurality of limiting blocks are integrally formed on one side end face of the convex cavity mold, and a plurality of limiting grooves matched with the limiting blocks are formed on the opposite end faces of the first mold half and the second mold half.
[0018] In an embodiment of the utility model, a plurality of matched mold opening grooves are formed on the opposite end faces of the concave cavity mold and the convex cavity mold.
[0019] Compared with the prior art, the utility model discloses a kind of composite material's day beam forming die, can once die pressing forming day beam, and can effectively prevent product extrusion phenomenon, can improve the profile quality and dimensional accuracy of product;At the same time, the mold structure is simple, easy to operate, and convenient to demould. BRIEF DESCRIPTION OF DRAWINGS
[0020] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed in the embodiment or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments described in the utility model, and other drawings can be obtained by those skilled in the art without creative labor.
[0021] Figure 1 It is the working drawing of the composite material day beam forming die in one embodiment of the utility model;
[0022] Figure 2 It is the working section view of the composite material day beam forming die in one embodiment of the utility model;
[0023] Figure 3 It is the perspective view of the concave cavity die;
[0024] Figure 4 It is the perspective view of the convex cavity die;
[0025] Figure 5 It is the schematic view of the day beam product.
[0026] Main figure mark explanation:
[0027] 1-concave cavity die, 11-first die petal, 12-second die petal, 101-bolt, 102-temperature measuring hole, 103-lifting ring, 104-positioning boss, 105-positioning guide column, 106-die opening groove, 107-limiting groove, 2-convex cavity die, 201-die convex part, 202-guide column hole, 203-glue overflow groove, 204-limiting block, 3-metal false part, 4-foam core, 5-day beam. DETAILED DESCRIPTION
[0028] In order to make the personnel in the technical field better understand the technical scheme in the utility model, the technical scheme in the embodiment of the utility model will be described clearly and completely below in combination with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the utility model.
[0029] As shown in Figure 1 and Figure 2 The utility model discloses a composite material day beam forming die, which comprises a concave cavity die 1 and a convex cavity die 2. The convex cavity die 2 is attached to the upper side end face of the concave cavity die 1. After the concave cavity die 1 and the convex cavity die 2 are attached, a closed cavity matching the day beam is formed.
[0030] As shown in Figure 5As shown in the figure, the product structure manufactured by the embodiment comprises a metal prosthesis 3 and a foam core 4. The metal prosthesis 3 and the foam core 4 are combined first, and then the prepreg is laid. The laying process is assisted by the mold and vacuum pre-compaction to ensure the size and compactness of the laid product. The laid product is placed in the closed cavity of the mold pressing I-beam 5 formed by the combination of the concave cavity mold 1 and the convex cavity mold 2 for mold pressing.
[0031] As shown in the figure, Figure 3 The concave cavity mold 1 comprises a first mold half 11 and a second mold half 12, and the first mold half 11 and the second mold half 12 are connected with a fastening assembly. The first mold half 11 and the second mold half 12 are connected together through the fastening assembly. The fastening assembly comprises a plurality of bolts 101, and a plurality of threaded holes matched with the bolts 101 are formed on the first mold half 11 and the second mold half 12. The threaded holes are threadedly connected with the bolts 101. The I-beam product is placed in the groove space formed by the first mold half 11 and the second mold half 12. After waiting for the product to soften, the first mold half 11 and the second mold half 12 can be locked by rotating and tightening the bolts 101.
[0032] As shown in the figure, Figure 2 and Figure 4 The convex cavity mold 2 comprises a mold protruding part 201, and the width of the mold protruding part 201 matches the groove width of the concave cavity mold 1. The mold protruding part 201 can be clamped in the groove of the concave cavity mold 1, and the mold protruding part 201 inserts the groove of the concave cavity mold 1 to form a cavity with a non-equal cross-section structure. At the same time, an inclined chamfer is processed at the opening of the groove of the concave cavity mold 1. When the concave cavity mold 1 and the convex cavity mold 2 are closed, it is more convenient for the mold protruding part 201 to be inserted into the groove of the concave cavity mold 1.
[0033] A plurality of glue overflow grooves 203 are formed on the convex cavity mold 2. When the mold is heated and pressurized after the concave cavity mold 1 and the convex cavity mold 2 are closed, the excess resin on the product can flow out through the glue overflow grooves 203.
[0034] As shown in the figure, Figure 3 One side end surface of the second mold half 12 is fixedly connected with a positioning boss 104, and the positioning boss 104 matches the metal prosthesis 3. During mold pressing, the metal prosthesis 3 is placed on the positioning boss 104. The positioning boss 104 supports the metal prosthesis 3 and determines the position of the product, so that the product is attached to the concave cavity mold 1.
[0035] As shown in the figure, Figure 3 and Figure 4 One side end surface of the second mold half 12 is fixedly connected with a plurality of positioning guide columns 105, and one side end surface of the convex cavity mold 2 is provided with guide column holes 202 matched with the positioning guide columns 105. The positioning guide columns 105 and the guide column holes 202 are used in cooperation, which makes it more convenient to assemble and disassemble the mold.
[0036] Multiple temperature measuring holes 102 are provided on one side end face of the first mold segment 11, the second mold segment 12, and the convex cavity mold 2. The temperature of the mold can be measured through the temperature measuring holes 102, which facilitates the control of the pressing time and pressure of the compression molding process and reduces internal quality problems of the product.
[0037] Multiple lifting rings 103 are welded to the opposite end faces of the concave cavity mold 1 and the convex cavity mold 2, which facilitate the handling of the molds.
[0038] The convex cavity mold 2 has multiple limiting blocks 204 integrally formed on one end face. The opposite end faces of the first mold piece 11 and the second mold piece 12 are provided with multiple limiting grooves 107 that match the limiting blocks 204. When the mold is closed, the limiting blocks 204 are just locked in the limiting grooves 107, making the concave cavity mold 1 and the convex cavity mold 2 more firmly closed.
[0039] Multiple mold release grooves 106 are provided on the opposite end faces of the concave cavity mold 1 and the convex cavity mold 2. The mold release grooves 106 on the concave cavity mold 1 correspond to the mold release grooves 106 on the convex cavity mold 2. After the concave cavity mold 1 and the convex cavity mold 2 are closed, there is still a certain gap at the location of the mold release grooves 106, which makes it easier to disassemble the mold.
[0040] When using, such as Figure 1 and Figure 5 As shown, the metal dummy 3 and the foam core 4 are first combined, and then the prepreg is laid. During the laying process, molds are used for assistance and vacuum pre-compression to ensure the size of the laid product and make the laying denser. Next, the molding stage begins. First, loosen bolt 101 to separate the first mold segment 11 and the second mold segment 12. Second, place the laid-out product inside the first mold segment 11 and the second mold segment 12, positioning the metal dummy 3 at the positioning boss 104 to ensure accurate product positioning and fit between the product and the first and second mold segments 11 and 12. Third, tighten bolt 101 to the appropriate position to ensure a tight fit between the first and second mold segments 11 and 12. Cover with the convex cavity mold 2 and lightly press it down, leaving a certain gap between the convex cavity mold 2 and the concave cavity mold 1. Fourth, place the molded product on a hot press. Measure the mold temperature using a temperature measuring hole. Heat to 85℃ and hold for 30 minutes to ensure good resin flow on the product. Fifth, apply pressure using the hot press to tightly close the upper and lower molds, ensuring the mold gap is no greater than 0.1mm to apply pressure to the product. Sixth, heat and maintain the temperature for curing. Finally, after cooling to room temperature, the product is demolded and trimmed to obtain the H-beam product.
[0041] It is apparent for a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, the scope of the present application being defined by the claims appended hereto rather than by the above description, and all the changes which fall within the meaning and the scope of the equivalent elements of the claims are intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.
[0042] Furthermore, it should be understood that although the present specification is described in terms of embodiments, not every embodiment according to the present specification needs to exhibit each and every characteristic specified in the present specification. The specification can also be described in terms of a single independent technical solution, but this does not mean that each embodiment only contains one independent technical solution. The specification is described in this way only for the sake of clarity, and a person skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by a person skilled in the art.
Claims
1. A forming die for a composite material herringbone beam, characterized by, The application relates to a mold for manufacturing a H-shaped beam, which comprises a concave cavity mold and a convex cavity mold, the convex cavity mold is attached to the upper end surface of the concave cavity mold, and the concave cavity mold and the convex cavity mold form a closed cavity matched with the H-shaped beam after being attached; The concave cavity mold comprises a first mold half and a second mold half, the first mold half and the second mold half are movably connected with fastening assemblies, and the first mold half and the second mold half are connected together through the fastening assemblies; The opposite end surfaces of the first mold half, the second mold half and the convex cavity mold are provided with a plurality of temperature measuring holes.
2. The forming mold for a composite material herringbone beam according to claim 1, wherein The convex cavity mold comprises a mold convex part, the concave cavity mold is provided with a groove, the mold convex part is matched with the groove, the mold convex part is inserted into the groove to form a non-equal cross-section structure cavity.
3. The forming die for a composite material herringbone beam according to claim 2, wherein The upper end surface of the groove of the concave cavity mold is an inclined chamfer, and the mold convex part is attached to the side wall of the groove.
4. The forming mold for a composite material herringbone beam according to claim 3, wherein The fastening assembly comprises a plurality of bolts, a plurality of thread holes matched with the bolts are formed in the first mold half and the second mold half, and the thread holes are connected with the bolts.
5. The forming mold for a composite material herringbone beam according to claim 4, wherein A plurality of glue overflow grooves are formed in the convex cavity mold.
6. The forming mold for a composite material herringbone beam according to claim 5, wherein One side end surface of the second mold half is fixedly connected with a positioning boss.
7. The forming tool for a composite material herringbone beam according to claim 6, wherein A plurality of positioning guide columns are fixedly connected to one side end surface of the second mold half, and a guide column hole matched with the positioning guide columns is formed in one side end surface of the convex cavity mold.
8. The forming mold for a composite material's day beam according to any one of claims 1 to 7, characterized in that, A plurality of lifting rings are fixedly connected to the opposite end surfaces of the concave cavity mold and the convex cavity mold.
9. The forming mold for a composite material herringbone beam according to claim 8, wherein A plurality of limiting blocks are integrally formed in one side end surface of the convex cavity mold, and a plurality of limiting grooves matched with the limiting blocks are formed in the opposite end surfaces of the first mold half and the second mold half.
10. The forming mold for a composite material herringbone beam according to claim 9, wherein A plurality of matched mold opening grooves are formed in the opposite end surfaces of the concave cavity mold and the convex cavity mold.