Die for manufacturing composite material grating cone through fiber winding process

Abstract

The utility model discloses a mold for manufacturing a composite material grating cone by a fiber winding process, belongs to the field of composite material molds, and solves the manufacturing problem of the existing grating cone. The mould comprises a conical mould main body, an upper steering nail ring, a lower steering nail ring, an upper flange, a lower flange, a rotating shaft and a silica gel soft film, wherein the rotating shaft sequentially penetrates through the upper flange, the conical mould main body and the lower flange; the conical mold body, the steering nail ring, the upper flange and the lower flange are coaxially matched, the upper steering nail ring is connected to the conical mold body through the upper flange, the lower steering nail ring is directly connected with the conical mold body, the lower flange is directly connected with the conical mold body, and the silica gel mold is formed by splicing one or more plane soft molds. The plurality of blades are circumferentially distributed on the outer surface of the conical mold main body; orthogonal grating grooves are formed in the surface of the silica gel mold, and the grating grooves are composed of grating strips in the axial direction and the circumferential direction. The mold is mainly used for manufacturing conical structures by fibers or prepreg tapes.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of composite material mould, especially relates to a mould for manufacturing composite material grid cone in fibre winding process. BACKGROUND

[0002] Advanced composite material has been widely used in aerospace, rail transit, ship and submarine because of its high specific strength and specific modulus, small thermal expansion coefficient, good designability and corrosion resistance. At the connection of different diameter cylinder segments of aircraft, rocket and submarine, taper structure is needed to change the cross section. Fibre winding, as a common composite material forming process, has unique advantages in forming rotary body and grid structure, and fibre winding process is to wind dry fibre on various moulds, then immerse resin glue into the dry fibre, and then obtain products through solidification and demoulding, which has many advantages such as high strength of fibre, high reliability, high production efficiency and low cost.

[0003] Compared with traditional wallboard structure, grid structure is lighter in weight and stronger in designability under the premise of ensuring strength and rigidity, and fibre winding process can ensure the continuity of fibre, fully utilize the strength of fibre and improve the quality and stability of products. Traditional winding process can only manufacture continuous cylinder shell or cylinder tank, and the mould used is high in price and cannot adapt to high designability grid cone. SUMMARY

[0004] The utility model provides a mould for manufacturing composite material grid cone in fibre winding process, and the mould is high in forming quality, low in price, light in weight, convenient to install and easy to operate.

[0005] To achieve the above object, the utility model adopts the following technical scheme:

[0006] A mould for manufacturing composite material grid cone in fibre winding process, comprising a conical mould body, an upper flange, a lower flange, a steering nail ring and a silica gel mould, wherein the conical mould body, the steering nail ring, the upper flange and the lower flange are coaxially matched, the upper flange and the lower flange are located at the top end and the bottom end of the conical mould body respectively, the steering nail ring is sleeved on the outer surface of the upper flange and the lower end of the conical mould body respectively, the silica gel mould is composed of one or more plane soft films and is distributed on the outer surface of the conical mould body in a circumferential direction, the surface of the silica gel mould is provided with orthogonal grid grooves, and the grid grooves are composed of grid strips in the axial and circumferential directions.

[0007] The mould further comprises upper and lower pressing blocks located at the top end of the upper flange and the bottom end of the lower flange respectively and used for pressing the upper flange and the lower flange.

[0008] The conical mold body includes an upper conical mold body conical cylinder segment, a lower conical mold body cylindrical cylinder segment, and a second positioning ring, the second positioning ring is located at the connection of the conical mold body conical cylinder segment and the conical mold body cylindrical cylinder segment, the upper surface of the second positioning ring is perpendicular to the outer surface of the conical mold body cylindrical cylinder segment, and the second positioning ring is used for positioning the soft silica gel film;

[0009] The upper flange includes an upper flange conical cylinder segment and a first positioning ring, the first positioning ring is located at the bottom of the upper flange conical cylinder segment, is matched with the second positioning ring, and is used for positioning the soft silica gel film.

[0010] A first positioning boss is arranged at the bottom of the upper flange conical cylinder segment to provide torque transmission and coaxial positioning, a first positioning groove is arranged at the top of the conical mold body conical cylinder segment to transmit torque and provide coaxial positioning, and the first positioning boss is matched with the first positioning groove.

[0011] A second positioning boss is arranged at the bottom of the conical mold body cylindrical cylinder segment to transmit torque and provide coaxial positioning, and a second positioning groove is arranged on the lower flange to provide torque and coaxial positioning, and the second positioning boss is matched with the second positioning groove.

[0012] The steering nail ring is provided with a steering nail ring nut hole and a steering nail ring bolt hole, the steering nail ring bolt hole is opened to penetrate the steering nail ring nut hole, when the steering nail is installed, first, a standard nut is put into the steering nail ring nut hole, and then a standard bolt is screwed into the steering nail ring bolt hole.

[0013] The outer surface of the upper steering nail ring inner surface and the outer surface of the upper steering nail ring outer surface that are sleeved on the outer surface of the upper flange are coaxial conical surfaces of the conical mold body, the upper steering nail ring nut hole is located at the lower end surface of the upper steering nail ring, and the opening direction is parallel to the generatrix direction of the outer surface; the upper steering nail ring bolt hole is located on the outer surface of the upper steering nail ring, and the opening direction is perpendicular to the tangent plane of the outer surface of the upper steering nail ring.

[0014] The outer surface of the lower steering nail ring outer surface that is sleeved on the outer surface of the conical mold body cylindrical cylinder segment is a coaxial conical surface of the conical mold body, the lower steering nail ring inner surface is a coaxial cylinder of the conical mold body cylindrical cylinder segment, the lower steering nail ring nut hole is located at the lower end surface of the lower steering nail ring, and the opening direction is parallel to the generatrix direction of the outer surface; the lower steering nail ring bolt hole is located on the outer surface of the lower steering nail ring, and the opening direction is perpendicular to the tangent plane of the outer surface of the lower steering nail ring.

[0015] The upper steering nail ring and the conical mold body cylindrical cylinder segment need to have sufficient lengths for subsequent vacuum flow guiding operations.

[0016] The number, spacing and distance from the edge of the steering nail ring bolt hole are designed according to the grid structure to be formed.

[0017] Beneficial effects: the utility model provides a mould and method for fiber winding process manufacturing composite material grid cone, and has the following advantages compared with prior art:

[0018] 1. Realize the manufacture of conical composite material grid structure;

[0019] 2. The separate mold design mold quality is lighter, convenient to install, easy to operate;

[0020] 3. The split design of the upper steering nail ring and the upper flange facilitates demolding and ensures the integrity of the composite material grid cone and its mold. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the three-dimensional schematic diagram of the mould for fiber winding process manufacturing composite material grid cone in the utility model embodiment Figure 1 ;

[0022] Figure 2 It is the three-dimensional schematic diagram of the mould for fiber winding process manufacturing composite material grid cone in the utility model embodiment Figure 2 ;

[0023] Figure 3 It is the schematic diagram of the main body structure of the conical mold in the utility model embodiment;

[0024] Figure 4 It is the schematic diagram of the upper steering nail ring structure in the utility model embodiment;

[0025] Figure 5 It is the schematic diagram of the lower steering nail ring structure in the utility model embodiment;

[0026] Figure 6 It is the schematic diagram of the upper flange structure in the utility model embodiment;

[0027] Figure 7 It is the schematic diagram of the lower flange structure in the utility model embodiment;

[0028] Figure 8 It is the schematic diagram of the silica gel soft film structure in the utility model embodiment;

[0029] In the diagram: 1-Conical mold body, 2-Upper steering pin ring, 3-Lower steering pin ring, 4-Upper flange, 5-Lower flange, 6-Upper clamping block, 7-Lower clamping block, 8-Rotating shaft, 9-Silicone mold, 10-First positioning boss, 11-First positioning groove, 12-Second positioning boss, 13-Second positioning groove, 14-Upper steering pin ring nut hole, 15-Upper steering pin ring bolt hole, 16-Lower steering pin ring nut hole, 17-Lower steering pin ring bolt hole, 18-Conical mold body conical cylinder section, 19-Conical mold body cylindrical cylinder section, 20-Second positioning ring, 21-Upper flange conical cylinder section, 22-First positioning ring, 23-Grid groove. Detailed Implementation

[0030] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments:

[0031] like Figures 1-2 As shown, a mold for manufacturing composite grid cones using fiber winding process includes: a conical mold body 1, an upper steering nail ring 2, a lower steering nail ring 3, an upper flange 4, a lower flange 5, an upper clamping block 6, a lower clamping block 7, a rotating shaft 8, and a silicone soft film 9; the conical mold body 1, the upper flange 4, and the silicone mold 9 are all conical.

[0032] The conical mold body 1 includes an upper conical mold body conical cylinder section 18 and a lower conical mold body cylindrical cylinder section 19, and a second positioning ring 20; the upper surface of the second positioning ring 20 is perpendicular to the outer surface of the conical mold body cylindrical cylinder section 19, and its lower surface forms a 45° angle with the plumb line, which facilitates manufacturing using melt extrusion process; the second positioning ring 20 is located at the connection between the conical mold body conical cylinder section 18 and the conical mold body cylindrical cylinder section 19; the silicone mold 9 is located on the outer surface of the conical mold body conical cylinder section 18;

[0033] The upper flange 4 includes an upper flange conical section 21 and a first positioning ring 22. The first positioning ring 22 is located at the bottom of the upper flange conical section 21. The lower side of the first positioning ring 22 is perpendicular to the outer surface of the conical mold body conical section 18. During installation, the first positioning ring 22 and the second positioning ring 20 hold and position the silicone mold 9.

[0034] The bottom of the first positioning ring 22 is provided with a first positioning boss 10 to provide torque and coaxial positioning. The top of the conical cylinder section 18 of the conical mold body is provided with a first positioning groove 11 for transmitting torque and coaxial positioning. The first positioning boss 10 and the first positioning groove 11 are fitted together. The bottom of the cylindrical cylinder section 19 of the conical mold body is provided with a second positioning boss 12 for transmitting torque and coaxial positioning. The lower flange 5 is provided with a second positioning groove 13 to provide torque and coaxial positioning. The second positioning boss 12 and the second positioning groove 13 are fitted together.

[0035] The upper steering nail ring 2 is sleeved outside the upper flange 4, and the inner surface and the outer surface of the upper steering nail ring 2 are coaxial conical surfaces with the outer surface of the conical mold body 1; the bottom end of the upper steering nail ring 2 is uniformly provided with upper steering nail ring nut holes 14 in the circumferential direction, and the opening direction of the upper steering nail ring nut hole 14 is parallel to the generatrix direction of the outer surface of the upper steering nail ring 2; the outer surface of the upper steering nail ring 2 is uniformly provided with upper steering nail ring bolt holes 15 in the circumferential direction, and the opening direction of the upper steering nail ring bolt hole 15 is perpendicular to the tangent plane of the outer surface of the upper steering nail ring 2; the upper steering nail ring bolt hole 15 is opened to penetrate the upper steering nail ring nut hole 14; during installation, the steering nail nut is first placed into the steering nail ring nut hole, and then the steering nail nut is twisted into the steering nail ring bolt hole.

[0036] The lower steering nail ring 3 is sleeved outside the conical mold body cylindrical barrel segment 19, the outer surface of the lower steering nail ring 3 is a coaxial conical surface with the outer surface of the conical mold body 1, and the inner surface of the lower steering nail ring 3 is a coaxial cylindrical surface with the outer surface of the conical mold cylindrical barrel segment 19; the bottom end of the lower steering nail ring 3 is uniformly provided with lower steering nail ring nut holes 16 in the circumferential direction, and the opening direction of the lower steering nail ring nut hole 16 is parallel to the generatrix direction of the outer surface of the lower steering nail ring 3; the outer surface of the lower steering nail ring 3 is uniformly provided with lower steering nail ring bolt holes 17 in the circumferential direction, and the opening direction of the lower steering nail ring bolt hole 17 is perpendicular to the tangent plane of the outer surface of the lower steering nail ring 3; the lower steering nail ring bolt hole 17 is opened to penetrate the lower steering nail ring nut hole 16; during installation, the steering nail nut is first placed into the steering nail ring nut hole, and then the steering nail nut is twisted into the steering nail ring bolt hole.

[0037] The upper pressing block 6 is located at the top of the upper flange 4, the lower pressing block 7 is located at the bottom of the lower flange 5, and the shaft 8 penetrates the upper pressing block 6, the upper flange 4, the conical mold body 1, the lower flange 5, and the lower pressing block 7 in sequence; the upper steering nail ring 2 and the conical mold body cylindrical barrel segment 19 have sufficient length for vacuum flow guiding operation of resin.

[0038] The upper pressing block 6 and the lower pressing block 7 use standard parts, the conical mold body 1, the upper steering nail ring 2, the lower steering nail ring 3, the upper flange 4, and the lower flange 5 are made of 3D printing thermoplastic plastic or multi-axis milling machine processing metal, and the silicone soft film is made by the reverse mold method. In the embodiment, the number of silicone soft molds 9 is four, the grid groove 23 is a orthogonal grid, and the grid is composed of grid strips in the axial and circumferential directions.

[0039] The upper flange 4 and the conical mold body 1 need to have a certain strength to withstand the vacuum pressure; the upper flange 4, the conical mold body 1, the upper steering nail ring 2, and the lower steering nail ring 3 need to have a certain heat resistance to withstand the temperature of resin high-temperature curing. Under the premise of meeting the strength required by the process, the conical mold body 1 can adopt the printing method of dot matrix filling to reduce the weight, enhance the portability of operation, and reduce the cost.

[0040] The mold in use comprises the following steps:

[0041] First, the rotating shaft is inserted through the upper pressing block 6, the upper flange 4, the conical mold body 1, the lower flange 5, the lower pressing block 7, and the upper flange 4, the conical mold body 1 and the lower flange 5 are clamped by fixing the upper pressing block 6 and the lower pressing block 7, then the silica gel mold 9 is sleeved outside the conical mold body 1, the first positioning ring 22 and the second positioning ring 20 clamp and position the silica gel mold 9, finally, the upper steering nail ring 2 is sleeved outside the upper flange 4, and the lower steering nail ring 3 is sleeved outside the conical mold body cylindrical section 19, the upper steering nail ring 2 and the lower steering nail ring 3 are pulled tight by the tension of the dry wire, and the assembly of the mold is completed.

[0042] In use, the continuous fiber thread is first tied to a steering nail of the upper steering nail ring 2, reaches the lower steering nail ring 3 after passing through the grid groove 23, passes through the second grid groove 23 after passing around the corresponding steering nail, and repeats the above operation until all the axial grid grooves 23 are passed through, and then winds the circumferential grid groove 23 one by one after passing through the last steering nail, and repeats the above operation until the grid groove 23 is filled with fibers.

[0043] The upper steering nail ring 2 and the conical mold body cylindrical section 19 are long enough for the vacuum flow guiding operation of the resin, after the introduced resin is completed with pressure high-temperature curing, the upper pressing block 6 and the lower pressing block 7 are removed, the steering nails of the upper steering nail ring 2 and the lower steering nail ring 3 are removed, then the lower steering nail ring 3 is removed from the lower part of the conical mold body 1, and the upper flange 4, the upper steering nail ring 2, the silica gel mold 9 and the forming structure are removed from the upper part of the conical mold body 1.

[0044] The above embodiments are only preferred embodiments of the present application, and are used to illustrate the technical solutions of the present application but not to limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents, and these modifications or replacements cannot make the modified technical solutions deviate from the spirit and scope of the technical solutions of the present application.

Claims

1. A mold for manufacturing a composite material grid cone in a fiber winding process, characterized in that, The utility model provides a kind of mould, including conical mould body, upper flange, lower flange, steering nail ring, silica gel mould, pivot;The pivot passes through upper flange, conical mould body, lower flange in proper order;The conical mould body, steering nail ring, upper flange, lower flange are coaxial cooperation, and the upper flange and lower flange are located at the top end and bottom end of conical mould body respectively;Steering nail ring is respectively sleeved in upper flange and the outer surface of conical mould body lower end, and silica gel mould is made of one or more plane silica gel soft film splicing, and it is distributed in the outer surface of conical mould body along circumference direction;The surface of silica gel mould is provided with orthogonal grid groove, and the grid groove is composed of axial and circumferential grid strip;The steering nail ring includes upper steering nail ring and lower steering nail ring, and the upper steering nail ring is sleeved in the outside of upper flange, and the lower steering nail ring is sleeved in the outside of the cylindrical barrel section of conical mould body.

2. A mold for fiber-winding process manufacturing of composite material grid cones according to claim 1, characterized in that, The mould includes upper pressing block and lower pressing block, which are located at the top end of upper flange and the bottom end of lower flange respectively, for pressing upper flange and lower flange.

3. A mold for fiber-winding process manufacturing of composite material grid cones according to claim 1, characterized in that, The conical mould body includes upper conical mould body conical barrel section, lower conical mould body cylindrical barrel section and second positioning ring, the second positioning ring is located at the junction of conical mould body conical barrel section and conical mould body cylindrical barrel section, the upper surface of the second positioning ring is perpendicular to the outer surface of conical mould body cylindrical barrel section, and the lower surface forms an angle of 45° with the direction of plumb.

4. A mold for fiber-winding process manufacturing of composite material grid cones according to claim 3, characterized in that, The upper flange includes upper flange conical barrel section and first positioning ring, the first positioning ring is located at the bottom of upper flange conical barrel section, and is coaxial with the second positioning ring for positioning silica gel soft film;The bottom of upper flange conical barrel section is provided with first positioning boss for torque transmission and coaxial positioning, the top of conical mould body conical barrel section is provided with first positioning groove for torque transmission and coaxial positioning, and the first positioning boss is matched with the first positioning groove.

5. The mold for fiber-winding process manufacturing of a composite grid cone according to claim 3, characterized in that, The bottom of conical mould body cylindrical barrel section is provided with second positioning boss for torque transmission and coaxial positioning, and the lower flange is provided with second positioning groove for torque transmission and coaxial positioning, and the second positioning boss is matched with the second positioning groove.

6. A mold for manufacturing a composite grid cone in a fiber winding process according to claim 1 or 4, characterized in that The inner and outer surfaces of upper steering nail ring are coaxial conical surfaces with the outer surface of conical mould body, and the bottom end of upper steering nail ring is uniformly provided with upper steering nail ring nut hole in circumferential direction, and the opening direction is parallel to the generatrix direction of outer surface;The outer surface of upper steering nail ring is uniformly provided with upper steering nail ring bolt hole in circumferential direction, and the opening direction is perpendicular to the tangent plane of upper steering nail ring outer surface;The upper steering nail ring bolt hole is opened to penetrate the upper steering nail ring nut hole.

7. A mold for manufacturing a composite grid cone in a filament winding process according to claim 1 or 3, characterized in that The outer surface of lower steering nail ring is coaxial conical surface with the outer surface of conical mould body, and the bottom end of lower steering nail ring is uniformly provided with lower steering nail ring nut hole in circumferential direction, and the opening direction is parallel to the generatrix direction of outer surface;The outer surface of lower steering nail ring is uniformly provided with lower steering nail ring bolt hole in circumferential direction, and the opening direction is perpendicular to the tangent plane of lower steering nail ring outer surface;The lower steering nail ring bolt hole is opened to penetrate the lower steering nail ring nut hole.

8. The mold for fiber-winding process manufacturing of composite grid cones according to claim 1, characterized in that, The steering nail ring and the conical mold body cylindrical section left enough length for subsequent vacuum flow guide operation outside the surface of the upper flange.

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