Composite material cylinder heat insulation layer forming tool

Abstract

The utility model discloses a forming tool for a heat insulation layer of a composite material cylinder, which relates to the technical field of composite material manufacturing and comprises a base, a main forming die, an auxiliary forming plate, an upper die body and a vacuum bag. The main forming die is fixedly connected to the upper portion of the base and comprises a first forming die and a second forming die which are connected in a matched mode. The auxiliary forming plate is fixedly connected to the upper portion of the main forming die, and the auxiliary forming plate and the main forming die define a heat insulation layer cavity. The upper die body is coaxially matched with the heat insulation layer cavity, axially reciprocates in the heat insulation layer cavity and is provided with a compression molding surface matched with the inner wall of the heat insulation layer cavity; the vacuum bag is used for compacting the heat insulation part of a product and comprises a vacuum bag pressing face matched with the inner wall of a heat insulation layer cavity. The device for preparing the composite material barrel has the advantages of being high in speed, low in cost, good in rigidity, easy to disassemble, good in maintainability and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of composite material manufacturing, in particular to a composite material cylinder insulation layer forming tool. Background Art

[0002] Carbon fiber composite materials have been widely used in many fields due to their light weight, high strength and simple structure, especially in aerospace, automotive industry, sports and leisure products.

[0003] However, in the existing technology, there are still many problems in the molding process of the composite material cylinder insulation layer, such as limited material adaptability; traditional tooling cannot meet the molding requirements of a variety of complex shapes, limiting the diversity and application range of the product; molding accuracy is difficult to guarantee: due to the lack of effective tooling support and positioning, the composite material cylinder insulation layer is prone to deformation and large dimensional deviation during the molding process, which reduces the accuracy and consistency of the product and has low production efficiency; complex molding processes and insulation layer measures increase production time and cost, limiting the ability of large-scale production.

[0004] To this end, it is necessary to propose a more advanced and practical composite cylinder insulation layer forming tooling, aiming to overcome the limitations of existing technology through innovative design and technical means to meet the market demand for high-quality, high-precision composite cylinders. Utility Model Content

[0005] The utility model aims to provide a composite material cylinder insulation layer forming tooling to solve the problems of limited material adaptability, difficult to ensure forming accuracy and low production efficiency during the forming of the composite material cylinder insulation layer.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a composite material cylinder insulation layer forming tool, comprising:

[0007] base;

[0008] A main forming mold, fixedly connected to the base, the main forming mold comprising two first forming molds and a second forming mold that are connected to each other;

[0009] An auxiliary forming plate is fixedly connected to the main forming mold, and the auxiliary forming plate and the main forming mold enclose a heat-insulating layer cavity;

[0010] An upper mold body is coaxially matched with the heat-insulating layer cavity and axially reciprocates in the heat-insulating layer cavity, and the upper mold body has a molding surface that matches the inner wall of the heat-insulating layer cavity;

[0011] The vacuum bag is used to compact the insulation part of the product, and includes a vacuum bag pressing surface that cooperates with the inner wall of the insulation layer cavity.

[0012] As an optional method, the upper mold body is axially guided by the auxiliary molding plate and the main molding mold through multiple guide pillars. The guide pillars are fixed in the upper mold body and are slidably connected with the auxiliary molding plate and the main molding mold.

[0013] As an optional manner, three guide pillars are provided along the circumference of the upper mold body.

[0014] As an optional manner, the upper mold body includes an end cap and a forming punch fixedly connected to the center of the bottom of the end cap, and the outer peripheral surface of the forming punch forms the molding surface.

[0015] As an optional method, the first molding die and the second molding die have the same structure and both include an annular body, the inner side surface of the annular body is a molding surface, and the upper and lower ends of the annular body extend toward the outer circumference with upper flanges and lower flanges, and multiple radial support parts are supported between the upper flange and the lower flange.

[0016] As an optional manner, a connecting hole is opened on the radial support portion at the connecting position of the first forming die and the second forming die, and the connecting hole cooperates with a bolt to realize the connection between the first forming die and the second forming die.

[0017] As an optional manner, the upper flanges of the first forming die and the second forming die are screwed to the auxiliary forming plate, and the lower flanges of the first forming die and the second forming die are screwed to the base.

[0018] As an optional manner, the upper mold body is connected to a hydraulic press, and is driven upward or downward by the hydraulic press.

[0019] The process for preparing the composite material cylinder insulation layer using the composite material cylinder insulation layer forming tool is as follows:

[0020] Step S1, laying the thermal insulation material and using the upper mold body to mold the first part of the product;

[0021] Step S2: Continue laying the insulation material and compacting the second part of the product with a vacuum bag;

[0022] Step S3: heating and vulcanizing in a vacuum tank to complete the molding.

[0023] Compared with the prior art, the present invention has at least the following beneficial effects:

[0024] The composite material cylinder insulation layer forming tooling of the utility model is made of metal materials and uses plates, nuts, bolts, etc. of standardized specifications and sizes, which reduces the processing cycle and manufacturing difficulty, and has the advantages of low cost, easy disassembly and good maintainability.

[0025] The composite material cylinder insulation layer forming tooling of the utility model is used to prepare the composite material cylinder insulation layer, which has a simple process, fast production speed and low production cost. In particular, it can solve the problem that complex insulation forming tooling is difficult to form, and organically combines compression molding and vacuum bag molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] 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. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 This is an axonometric drawing of the composite material cylinder insulation layer forming tooling of the utility model;

[0028] Figure 2 This is the main view of the molding tool of the utility model;

[0029] Figure 3 This is a right side view of the molding tool of the utility model;

[0030] Figure 4 This is a top view of the molding tool of the utility model;

[0031] Figure 5 Based Figure 4 Cross-sectional view at AA in the middle;

[0032] Figure 6 This is an assembly diagram of the first die body, guide pillars and auxiliary forming plates in the forming tooling of the present invention;

[0033] Figure 7 For this utility model Figure 6 a top view of the assembly shown;

[0034] Figure 8 Based Figure 7 Cross-sectional view at the middle BB;

[0035] Figure 9 This is the axonometric measurement of the first die in the molding tool of the utility model Figure 1 ;

[0036] Figure 10 This is the axonometric measurement of the first die in the molding tool of the utility model Figure 2 ;

[0037] Figure 11 This is an axonometric view of the auxiliary forming plate in the forming tooling of the present invention;

[0038] Figure 12This is an exploded view of the main forming die in the forming tooling of the present invention;

[0039] Figure 13 This is an assembly drawing of the base, main forming die and auxiliary forming plate in the forming tooling of the present invention;

[0040] Figure 14 for Figure 13 a top view of the assembly shown;

[0041] Figure 15 for Figure 14 Cross-sectional view at CC;

[0042] Figure 16 Assembly drawings of the base, main forming mold, auxiliary forming plate, molded product, and vacuum bag molded product of the present utility model;

[0043] Figure 17 for Figure 16 a top view of the assembly shown;

[0044] Figure 18 for Figure 17 Cross-sectional view at DD in the middle.

[0045] In the figure: 1. First mold body; 2. Auxiliary molding plate; 3. Main molding mold; 31. First molding mold; 32. Second molding mold; 4. Base; 5. Bolt; 6. Guide column; 7. Molded product; 8. Vacuum bag molded product; 9. Vacuum bag pressing surface. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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.

[0047] In response to the problems of limited material adaptability, difficulty in ensuring molding precision, and low production efficiency during the molding of existing composite cylinder insulation layers, this utility model aims to propose a composite cylinder insulation layer molding tool. Through innovative design and technical means, it overcomes the limitations of existing technology and meets the market demand for high-quality, high-precision composite cylinders.

[0048] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0049] Reference Figures 1 to 5As shown, an embodiment of the present invention provides a composite material cylinder insulation layer forming tool for forming the composite material cylinder insulation layer, and the forming tool includes a first mold body 1, a guide column 6, an auxiliary forming plate 2, a main forming mold 3, a base 4 and a plurality of fastening bolts 5 that cooperate with each other. The forming tool is detachably assembled from the above-mentioned multiple components and assembled using bolts 5. After the parts are worn to a certain extent, they can be replaced, which can further extend the service life of the composite material cylinder insulation layer composite forming tool. The forming tool also includes a vacuum bag that cooperates with the insulation layer cavity enclosed by the main forming mold 3 and the auxiliary forming plate 2. The vacuum bag is used to compact the insulation part of the product, including a vacuum bag pressing surface 9 that cooperates with the inner wall of the insulation layer cavity. The design of the forming tool of this embodiment aims to achieve efficient forming of a complex insulation layer by combining compression molding and vacuum bag molding.

[0050] Specifically, if Figures 6 to 8 As shown, the upper half of the forming tooling is assembled by the first mold body 1, the guide pillars 6 and the auxiliary forming plate 2. The first mold body 1 and the auxiliary forming plate 2 are each provided with three guide holes corresponding to each other. The three guide holes are evenly distributed along the circumference of the first mold body 1 and the auxiliary forming plate 2, and the three guide pillars 6 pass through each guide hole. Specifically, the three guide holes on the first mold body 1 are T-shaped holes, and each guide pillar 6 is a T-shaped column body, one end of which has a stepped column protruding in an annular manner, which is used to form an axial limit fit with the T-shaped guide hole, and the other end is provided with a radially smoothly contracted conical end to facilitate insertion into the guide hole. The three guide pillars 6 have a positioning function for the first mold body 1 and the auxiliary forming plate 2, and can also ensure that they play a guiding role when the upper part and the lower part of the forming tooling are docked.

[0051] Specifically, the main forming mold 3 and the base 4 are fixedly connected to form the lower half of the forming tooling. Figure 3 and Figure 12 As shown, the main forming mold 3 is divided into two semicircular first forming molds 31 and second forming molds 32. The first forming mold 31 and the second forming mold 32 are fastened together by transverse bolts 5. The first forming mold 31 and the second forming mold 32 are both fixedly connected to the base 4 by bolts 5, and are positioned by a cylindrical pin structure to ensure that the accuracy of the tooling after installation meets the product processing requirements. The main forming mold 3 is fixedly connected to the base 4 to form the lower half of the forming tooling.

[0052] In the above embodiment, if Figure 12As shown, the cross section of the main forming mold 3 is I-shaped. The main forming mold 3 includes an annular main body, the inner side of the annular main body is a forming surface, and the upper and lower ends of the annular main body extend horizontally toward the outer circumference with an upper flange and a lower flange, and a plurality of radial support parts are supported between the upper flange and the lower flange. The upper flange is provided with a plurality of screw holes and three evenly distributed guide holes, and the guide holes cooperate with the guide pillars 6 to form a limit. The lower flange is provided with a plurality of screw holes for fastening to the base 4 through bolts 5. The main forming mold 3 is divided into two semicircular first forming molds 31 and a second forming mold 32, wherein a connecting hole is provided on the radial support part at the docking position of the first forming mold 31 and the second forming mold 32, and the bolts 5 pass through the connecting hole to fasten the two forming molds into one.

[0053] In the above embodiment, if Figure 9 and Figure 10 As shown, the first mold body 1 includes an end cap and a forming punch fixed to the bottom of the end cap. The forming punch is a hollow cylindrical protrusion structure. The forming punch cooperates with the insulation layer cavity formed by the assembly of the base 4, the main forming mold 3, and the auxiliary forming plate 2 to achieve mold closing and form the molded product 7. The outer peripheral surface of the forming punch forms a molding surface that cooperates with the inner side surface of the annular body of the main forming mold 3 for forming the molded product 7.

[0054] In the above embodiment, if Figure 11 As shown, the auxiliary forming plate 2 is a hollow disc-shaped structure with a certain thickness. Its upper surface cooperates with the first mold body 1, and its lower surface cooperates with the main forming mold 3. The auxiliary forming plate 2 is used to cooperate with the base 4 and the main forming mold 3 to form an insulation layer cavity, which plays a shaping role on the outer surface of the insulation layer.

[0055] like Figures 13 to 15 As shown, the heat-insulating layer cavity is composed of a base 4, a forming block, and an auxiliary forming block, which plays a role in shaping the outer surface of the heat-insulating layer.

[0056] like Figures 16 to 18 As shown, the product's insulation layer consists of two parts: Product 1: a molded product 7, and Product 2: a vacuum bag molded product 8. The molded product 7 is molded using a molded insulation layer tool. First, the base 4, main molding die 3, and auxiliary molding plate 2 are fixed with bolts 5. Then, depending on the product thickness, the insulation material is applied to the surface of the insulation layer cavity. The first mold body 1 of the tool is then installed. Under the action of the hydraulic press, the first mold body 1 is pressed downward along the direction of the guide column 6 to form a part of the product. The first mold body 1 of the tool is removed, and the insulation material of Product 2 is applied on the basis of Product 1. After the application is completed, the insulation material of Product 2 is compacted with the help of a vacuum bag, and the tool is then pushed into a vacuum tank for heating and vulcanization. This allows the molding of a complex insulation layer to be completed while reducing tooling costs.

[0057] In some embodiments, the first mold body 1, guide posts 6, auxiliary forming plate 2, main forming mold 3, and base 4 are all fabricated from sheet metal by machining and welding. During processing, the sheet metal is first cut according to the design drawings and then welded and machined to the desired shape and size. The base 4, main forming mold 3, and auxiliary forming plate 2 are mounted and secured with bolts 5. The first mold body 1, guide posts 6, and auxiliary forming plate 2 constitute the upper portion of the tooling. Three guide posts 6 are evenly distributed circumferentially, positioning the first mold body 1 and auxiliary forming plate 2 and providing guidance when the upper and lower portions of the forming tooling are docked.

[0058] In some embodiments, each component can be further made of national standard metal plates while ensuring strength, which can shorten the cycle and reduce costs; further, the tooling adopts a modular design, dividing the forming surface into modules of uniform size, which can greatly facilitate the later maintenance time and cost of the forming tooling. It is more preferred to adopt molding, vacuum bag forming and other processes, so that the insulation layer can be formed into a tooling to form an insulation layer of complex shape.

[0059] The molding tooling in the above embodiment utilizes a modular design and uses screws for secure connection, facilitating disassembly and replacement of worn parts and extending service life. The tooling utilizes a modular design, with components connected by bolts 5 for easy disassembly and replacement. The main molding die 3 is divided into two halves, connected to the base 4 by bolts 5 and positioned using cylindrical pins to ensure that the tooling meets product requirements after installation. The tooling utilizes processes such as molding and vacuum bagging, enabling the molding of complex insulation layers.

[0060] The working principle of the embodiment of the utility model is:

[0061] The forming plates are welded, corrected and machined into the insulation layer cavity, base 4 and cover plate, and then the base 4 and the insulation layer cavity are fixed in sequence by bolts 5, and then the insulation material is laid on the cavity according to the insulation size and shape, and then the cover plate is guided by the guide column 6, and the mold is closed under the action of the hydraulic press, the first part of the insulation layer is molded, and then the cover plate is taken out, and the subsequent insulation part sheets are continued to be laid, and then the subsequent part sheets are vacuumed and compacted through the vacuum bag, and the vacuum is continued, and the mold is pushed into the vacuum tank, and the insulation sheet laid for the second time is heated and vulcanized. After the vulcanization is completed, the vacuum bag is removed first, and then the main molding mold 3 is taken out from both sides, and finally the product is taken out.

[0062] The composite material cylinder insulation layer forming tool of the embodiment of the utility model is used to prepare the composite material cylinder insulation layer. The preparation process is as follows:

[0063] Step S1, compression molding: according to the thickness of the product, the insulation material is laid on the surface of the insulation layer cavity; then the first mold body 1 is installed, and under the action of the hydraulic press, the first mold body 1 is pressed downward along the guide pillar 6 to form the first part of the product;

[0064] Step S2, vacuum bag forming: take out the first mold body 1 of the tooling, and continue to lay the insulation material of the second part of the product on the basis of the first part of the product; after the laying is completed, the insulation material of the second part of the product is compacted with the help of the vacuum bag;

[0065] Step S3, heating and vulcanization: pushing the tooling into a vacuum tank for heating and vulcanization to complete the molding of the complex insulation layer.

[0066] The composite material cylinder insulation layer forming tool disclosed in the embodiment of the present invention has at least the following beneficial effects compared to the prior art:

[0067] The use of the molding tool of the present invention has a fast production speed and low production cost, and is particularly suitable for the molding of complex insulation layers; the molding tool adopts plates of standardized specifications and sizes and standard nuts and bolts 5, which reduces the processing cycle and manufacturing difficulty; the overall structure of the molding tool is simple, and the parts can be disassembled for easy maintenance and repair; compared with the existing technology, the utility model tool has obvious advantages in improving production efficiency, reducing costs and improving product quality.

[0068] Anything not described in detail in the present invention is a conventional technical means well known to those skilled in the art.

[0069] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0070] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements to the technical solutions of the present invention made by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A composite material cylinder insulation layer forming tool, characterized in that: include: Base (4); A main forming mold (3) is fixedly connected above the base (4), and the main forming mold (3) includes two first forming molds (31) and a second forming mold (32) that are matched and connected; An auxiliary forming plate (2) is fixedly connected above the main forming mold (3), and the auxiliary forming plate (2) and the main forming mold (3) enclose a heat-insulating layer cavity; An upper mold body is coaxially matched with the heat-insulating layer cavity and axially reciprocates in the heat-insulating layer cavity, and the upper mold body has a molding surface that matches the inner wall of the heat-insulating layer cavity; The vacuum bag is used to compact the heat-insulating part of the product, and comprises a vacuum bag pressing surface (9) that cooperates with the inner wall of the heat-insulating layer cavity.

2. The composite material cylinder insulation layer forming tool according to claim 1, characterized in that: The upper mold body is axially guided by the auxiliary molding plate (2) and the main molding die (3) through a plurality of guide pillars (6); the guide pillars (6) are fixed in the upper mold body and are slidably connected to the auxiliary molding plate (2) and the main molding die (3).

3. The composite material cylinder insulation layer forming tool according to claim 2, characterized in that: Three guide pillars (6) are arranged along the circumference of the upper mold body.

4. The composite material cylinder insulation layer forming tool according to claim 1, characterized in that: The upper mold body includes an end cap and a forming convex mold fixedly connected to the center of the bottom of the end cap, and the outer peripheral surface of the forming convex mold forms the molding surface.

5. The composite material cylinder insulation layer forming tool according to claim 1, characterized in that: The first forming die (31) and the second forming die (32) have the same structure and both include an annular body, the inner side surface of the annular body is a forming surface, the upper and lower ends of the annular body extend toward the outer circumference with an upper flange and a lower flange, and a plurality of radial support parts are supported between the upper flange and the lower flange.

6. The composite material cylinder insulation layer forming tool according to claim 5, characterized in that: A connecting hole is provided on the radial support portion at the connecting position of the first forming die (31) and the second forming die (32), and a bolt (5) passes through the connecting hole to realize the connection between the first forming die (31) and the second forming die (32).

7. The composite material cylinder insulation layer forming tool according to claim 6, characterized in that: The upper flanges of the first forming die (31) and the second forming die (32) are screwed to the auxiliary forming plate (2), and the lower flanges of the first forming die (31) and the second forming die (32) are screwed to the base (4).

8. The composite material cylinder insulation layer forming tool according to claim 1, characterized in that: The upper mold body is connected to a hydraulic press and is driven upward or downward by the hydraulic press.

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