Integral forming method for T-shaped composite material circumferential rib and cylinder

Abstract

The invention discloses an integral forming method for a T-shaped composite material circumferential rib and a cylinder, and belongs to the field of aviation composite material forming. The method comprises the following steps of: 1, assembling a forming tool in a purification room; 2, forming of R-angle filler and a composite material cover plate is completed; thirdly, laying of the L-side laying layers and the R-side laying layers of the N-1 T-shaped composite material circumferential ribs is completed; fourthly, the first core mold assembly and the first core mold bracket are disassembled; 5, the first core mold assembly, the first end plate and the first fiber placement shaft are placed on the combined bracket; sixthly, the remaining N-1 sets of core mold assemblies are placed on the first set of core mold assembly; seventhly, assembling of the T-shaped composite material circumferential ribs and the barrel forming die body is completed; eighthly, R-angle filler is placed at the intersection angle of every two adjacent core mold assemblies; ninthly, barrel paving is completed; tenthly, a composite material cover plate is installed on the outer side of the barrel; step 11, packaging and curing; and twelfthly, demolding is conducted. The method is used for integral forming of the T-shaped composite material circumferential rib and the cylinder.

Description

Technical Field

[0001] The present invention belongs to the field of aviation composite material forming, and particularly relates to a method for integrally forming a T-shaped composite material circumferential rib and a cylinder body. Background Art

[0002] In recent years, stiffened panel structures have been widely used in components such as fuselages and wings in the aerospace field, effectively improving the stiffness-to-mass ratio and anti-destruction ability of the structures. The cross-sectional shapes of the ribs are diverse: common ones include T-shaped, hat-shaped, etc. The traditional cylinder section stiffened structure uses external stiffening on the cylinder body. The stiffening structure is generally arranged longitudinally, making it difficult to meet the requirements for the roundness of the cylinder body and the axis accuracy of the ribs. And the traditional forming method is adhesive curing forming. The specific process is as follows: First, the laying of the cylinder body is completed using a cylinder body forming die and an automatic fiber placement machine. The rib is formed and trimmed through a separate rib forming die. Then, a rib positioning card board (such as Figure 27 the reference numeral 27 in the figure) is used to complete the positioning of the rib and the cylinder body after laying. Finally, the cylinder body and the rib are adhesively cured to form a cylinder body forming die body (such as Figure 27 the reference numeral 28 in the figure). Since the traditional forming method is adhesive curing forming, there are problems such as low connection strength, poor performance after adhesive forming, high manufacturing cost, and low work efficiency. Summary of the Invention

[0003] The purpose of the present invention is to provide a method for integrally forming a T-shaped composite material circumferential rib and a cylinder body to solve the problem of difficult forming of the T-shaped composite material circumferential rib and the cylinder body.

[0004] The method for integrally forming a T-shaped composite material circumferential rib and a cylinder body of the present invention is to set a T-shaped composite material circumferential rib structure inside the cylinder body, and the T-shaped composite material circumferential rib and the cylinder body are integrally cured by a co-curing forming method.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is:

[0006] A method for integrally forming a T-shaped composite material circumferential rib and a cylinder body, the forming method is realized by using a forming tooling for the T-shaped composite material circumferential rib and the cylinder body. The forming tooling includes a main tooling and an auxiliary tooling. The main tooling includes an R-angle filler forming die, a composite material cover plate forming die, an in-tank bracket, N sets of core die assemblies and N core die brackets, N≥3; the auxiliary tooling includes a combined bracket; the method includes the following steps:

[0007] Step 1: Move the unassembled forming tooling into the purification room, clean the surface and then assemble them separately.

[0008] Step 2: Use the R-corner filler forming die to complete the forming of the R-corner filler; use the composite cover plate forming die to complete the forming of the composite cover plate, and then drill positioning holes on the formed composite cover plate for positioning with the T-shaped composite circumferential ribs and the main body of the cylinder forming die;

[0009] Step 3: After respectively combining and positioning N sets of core mold components with N core mold brackets one by one, complete the laying of the L-side layers and the R-side layers of N - 1 T-shaped composite circumferential ribs;

[0010] Step 4: Disassemble the first set of core mold components in the N sets of core mold components from the first core mold bracket among the N core mold brackets;

[0011] Step 5: Place the first set of core mold components containing the L-side layer of the first T-shaped composite circumferential rib, the end plate 1 and the filament winding shaft 1 of the first core mold bracket on the frame of the combined bracket, with the L-side layer of the first T-shaped composite circumferential rib facing up, the filament winding shaft 1 placed vertically and detachably fixedly connected to the end plate 1, and the end plate 1 detachably fixedly connected to the limit block of the combined bracket; the limit block is detachably fixedly connected to the frame;

[0012] Step 6: After disassembling the remaining N - 1 sets of core mold components from the remaining N - 1 core mold brackets, stack the remaining N - 1 sets of core mold components on the first set of core mold components in sequence from bottom to top, and make the L-side layers and R-side layers of adjacent two sets of core mold components adjacent to each other, and position and detachably connect between adjacent two sets of core mold components;

[0013] Step 7: Install the end plate N and the filament winding shaft N of the Nth core mold bracket on the Nth set of core mold components from bottom to top. At this time, the N sets of core mold components, end plate 1, end plate N, filament winding shaft 1, and filament winding shaft N form the main body of the T-shaped composite circumferential rib and the cylinder forming die;

[0014] Step 8: Complete the separation of the combined bracket from the main body of the T-shaped composite circumferential rib and the cylinder forming die, and combine and position the main body of the T-shaped composite circumferential rib and the cylinder forming die with the inlet tank bracket. Then, place the R-corner filler at the intersection angle of the outer peripheral end faces of adjacent two sets of core mold components;

[0015] Step 9: Separate the main body of the T-shaped composite circumferential rib and the cylinder forming die from the inlet tank bracket, and then combine it with the filament winding machine to lay the composite material on the outer circumferential surface of the main body of the T-shaped composite circumferential rib and the cylinder forming die to complete the laying of the cylinder;

[0016] Step 10: After the laying of the cylinder is completed, reposition and place the main body of the T-shaped composite circumferential rib and the cylinder forming die on the inlet tank bracket, and install and position the composite cover plate on the outer circumferential surface of the main body of the T-shaped composite circumferential rib and the cylinder forming die;

[0017] Step Eleven: Package the T-shaped composite circumferential ribs with composite covers installed, the main body of the cylinder forming die, and cure them in a curing oven.

[0018] Step Twelve: After curing is completed, remove the T-shaped composite circumferential ribs with composite covers installed and the main body of the cylinder forming die from the curing oven, transfer the T-shaped composite circumferential ribs and the main body of the cylinder forming die to a demolding bracket, remove End Plate 1, End Plate N, Filament Winding Shaft 1, and Filament Winding Shaft N, complete the drilling of the assembly holes, and then remove the positioning connecting parts between the mandrels in the mandrel assembly. With the aid of demolding tools, complete the demolding of the T-shaped composite circumferential ribs and the cylinder.

[0019] Further, the value range of N is 3 to 14.

[0020] Further, in Step One, when the environmental temperature and humidity conditions in the purification room meet the requirements, the temperature is 18 - 22°C, and the relative humidity is 45 - 65%.

[0021] Further, in Step Three, the outer circumferential surface diameters at both ends of the mandrel assembly are the same. After respectively combining and positioning the N groups of mandrel assemblies with N mandrel brackets one by one, complete the laying of the L-side layers and the R-side layers of N - 1 T-shaped composite circumferential ribs; the specific process is as follows:

[0022] First, combine and position the first group of mandrel assemblies with the first mandrel bracket. Then, lay the composite material at the annular intersection angle at one end of the outer circumferential surface of the first group of mandrel assemblies to complete the laying of the L-side layer of the first T-shaped composite circumferential rib.

[0023] Then, among the remaining N - 1 groups of mandrel assemblies, after removing the Nth group of mandrel assemblies, respectively combine and position the remaining mandrel assemblies with the corresponding mandrel brackets. Then, lay the composite material at the annular intersection angles at both ends of the outer circumferential surface of each group of mandrel assemblies to complete the laying of the R-side layer and the L-side layer of the corresponding T-shaped composite circumferential ribs.

[0024] Finally, combine and position the Nth group of mandrel assemblies with the Nth mandrel bracket. Then, lay the composite material at the annular intersection angle at one end of the outer circumferential surface of the Nth group of mandrel assemblies to complete the laying of the R-side layer of the N - 1th T-shaped composite circumferential rib.

[0025] Further, in Step Three, the outer circumferential surface diameters at both ends of the mandrel assembly are different. After respectively combining and positioning the N groups of mandrel assemblies with N mandrel brackets one by one, complete the laying of the L-side layers and the R-side layers of N - 1 T-shaped composite circumferential ribs; the specific process is as follows:

[0026] First, combine and position the first set of core mold components with the first core mold bracket. After that, lay the composite material at the small-diameter end annular intersection angle on the outer circumferential surface of the first set of core mold components to complete the laying of the L-side ply of the first T-shaped composite circumferential rib.

[0027] Then, among the remaining N - 1 sets of core mold components, after removing the Nth set of core mold components, combine and position each of the remaining core mold components with the corresponding core mold bracket. After that, lay the composite material at the small-diameter end annular intersection angle on the outer circumferential surface of each set of core mold components to complete the laying of the R-side ply of the corresponding T-shaped composite circumferential rib; lay the composite material at the large-diameter end annular intersection angle on the outer circumferential surface of each set of core mold components to complete the laying of the L-side ply of the corresponding T-shaped composite circumferential rib.

[0028] Finally, combine and position the Nth set of core mold components with the Nth core mold bracket. After that, lay the composite material at the small-diameter end annular intersection angle on the outer circumferential surface of the Nth set of core mold components to complete the laying of the R-side ply of the (N - 1)th T-shaped composite circumferential rib.

[0029] Further, the N sets of core mold components have the same structure and each includes four core molds, namely a front core mold, a rear core mold, an upper core mold, and a lower core mold; the upper core mold and the lower core mold are respectively positioned and detachably fixedly connected to the front core mold and the rear core mold.

[0030] Further, the material of the abdominal plate surface on the adjacent side between the first set of core mold components and the second set of core mold components is steel, and the material of the abdominal plate surface on the adjacent side between the Nth set of core mold components and the (N - 1)th set of core mold components is silicone rubber. Except for the first set of core mold components and the Nth set of core mold components, the materials of the abdominal plate surfaces on both sides of the remaining core mold components are either steel or silicone rubber, so that one side of the abdominal plate surface of the T-shaped composite circumferential rib is steel and the other side is silicone rubber.

[0031] Further, in step eight, after placing the R-angle filler at the intersection angle of the outer peripheral end surfaces of two adjacent sets of core mold components, lay the flange of the T-shaped composite circumferential rib outside the R-angle filler.

[0032] Further, in step twelve, the demolding tool is a positive and reverse thread demolding rod; both ends of the positive and reverse thread demolding rod are detachably connected to the front core mold and the rear core mold of the corresponding core mold components respectively. By rotating the positive and reverse thread nut in the middle of the positive and reverse thread demolding rod, the inward movement of the front core mold and the rear core mold is realized; similarly, both ends of the positive and reverse thread demolding rod are detachably connected to the upper core mold and the lower core mold of the corresponding core mold components respectively. By rotating the positive and reverse thread nut in the middle of the positive and reverse thread demolding rod, the inward movement of the upper core mold and the lower core mold is realized, so as to complete the demolding of each set of core mold components and finally realize the demolding of the T-shaped composite circumferential rib and the cylindrical part.

[0033] Further, the first core mold bracket includes a first handwheel, two first end plates, two first fiber placement shafts, two first positioning pins and two first brackets; the two first brackets are symmetrically arranged left and right, the two first fiber placement shafts are coaxially arranged in the grooves at the upper ends of the two first brackets, a plurality of first jacks are evenly distributed along the circumferential direction on the outer walls of the two first fiber placement shafts, the first positioning pins pass through the two vertically corresponding first jacks and are inserted into the first positioning holes provided at the upper ends of the first brackets, and the opposite ends of the two first fiber placement shafts are respectively detachably and fixedly connected to the middle parts of the corresponding first end plates; when the first group of core mold components are combined with the first core mold bracket, the two first end plates are detachably and fixedly connected to the two opposite side surfaces of the first group of core mold components, and a first handwheel is fixedly installed at the outer end of the first fiber placement shaft located on the ply side of the first group of core mold components.

[0034] The beneficial effects of the present invention compared with the prior art are as follows:

[0035] 1. Compared with the traditional adhesive bonding and curing process, the co-curing process of the present invention has a higher connection strength and better overall performance (while the performance after adhesive bonding is poor). From the perspectives of manufacturing cost and working efficiency, the co-curing process has obvious advantages.

[0036] 2. By using the co-curing method of the present invention, the co-curing of the cylinder and the T-shaped composite circumferential rib can be realized. And the number of assembly times is reduced, the cumulative error is effectively reduced, thus saving man-hours and improving production efficiency.

[0037] 3. By adopting the forming method of the present invention, a T-shaped composite circumferential rib and a cylinder with a length of about 3m can be manufactured.

[0038] In addition, the present invention also has the following beneficial effects:

[0039] 1. In the forming method of the present invention, the core mold bracket and the core mold components are combined to complete the paving of the T-shaped composite circumferential rib.

[0040] 2. In the forming method of the present invention, the use of the composite cover plate can ensure the outer shape quality of the cylinder.

[0041] 3. In the forming method of the present invention, on both sides of the core web of the T-shaped composite circumferential rib, one side is a steel mold and the other side is a silicone rubber, which provides pressure for the integral co-curing of the web surface.

[0042] 4. In the forming method of the present invention, with the aid of the combined bracket, vertical assembly is carried out, which is convenient for operation.

[0043] 5. In the forming method of the present invention, the problem of difficult demolding of the T-shaped composite circumferential rib inside the cylinder is solved. Description of the Drawings

[0044] Figure 1Isometric view of the T-shaped composite material circumferential rib and cylinder formed by the method of the present invention;

[0045] Figure 2 Isometric view of the R-angle filler forming die;

[0046] Figure 3 Is Figure 2 Partial enlarged view of part A of

[0047] Figure 4 Isometric view of the composite material cover plate forming die;

[0048] Figure 5 Isometric view of the composite material cover plate;

[0049] Figure 6 Front view of the combination of the first core mold bracket and the first group of core mold components;

[0050] Figure 7 Front view of the combination of the second core mold bracket and the second group of core mold components;

[0051] Figure 8 Front view of the combination of the third core mold bracket and the third group of core mold components;

[0052] Figure 9 Front view of the combination of the fourth core mold bracket and the fourth group of core mold components;

[0053] Figure 10 Front view of the combination of the fifth core mold bracket and the fifth group of core mold components;

[0054] Figure 11 Front view of the combination of the sixth core mold bracket and the sixth group of core mold components;

[0055] Figure 12 Front view of the combination of the seventh core mold bracket and the seventh group of core mold components;

[0056] Figure 13 Front view of the combination of the eighth core mold bracket and the eighth group of core mold components;

[0057] Figure 14 Front view of the combination of the first group of core mold components and the combined bracket;

[0058] Figure 15 Front view of the combination of the core mold components, the core mold bracket and the combined bracket;

[0059] Figure 16 Front view of the inlet tank bracket;

[0060] Figure 17 Front view of the assembly of the composite material cover plate after the cylinder is laid;

[0061] Figure 18 Front view of drilling holes on the demoulding bracket;

[0062] Figure 19 It is Figure 18 Partial enlarged view at position B of , the direction indicated by the arrow in the figure is the drilling direction;

[0063] Figure 20 Front view of demoulding using the demoulding tool;

[0064] Figure 21 It is Figure 20 View from direction P of ;

[0065] Figure 22 Front view of the placement position of the R - corner filler;

[0066] Figure 23 Cross - sectional view of the core - mold assembly;

[0067] Figure 24 It is Figure 23 Left view of ;

[0068] Figure 25 Schematic diagram of the material description of the abdominal plate surface of the core - mold assembly;

[0069] Figure 26 It is Figure 25 Partial enlarged view at position M of ;

[0070] Figure 27 Schematic diagram of the traditional cylindrical body stiffening structure.

[0071] The names and reference numerals of the components involved in the above - mentioned drawings are summarized as follows:

[0072] R-angle filler forming die 1, composite cover plate forming die 2, drilling die 2-1, composite cover plate 3, positioning hole 3-1, positioning pin 3-2, first group of core die components 4-1, front core die 4-1-1, rear core die 4-1-2, upper core die 4-1-3, lower core die 4-1-4, second group of core die components 4-2, third group of core die components 4-3, fourth group of core die components 4-4, fifth group of core die components 4-5, sixth group of core die components 4-6, seventh group of core die components 4-7, eighth group of core die components 4-8, screw 4-16, flat washer 4-17, cylindrical pin 4-18, first core die bracket 5-1, end plate 1 5-1-1, filament winding shaft 1 5-1-2, handwheel 1 5-1-3, bracket 1 5-1-5, positioning pin 1 5-1-6, second core die bracket 5-2, end plate 2 5-2-1, filament winding shaft 2 5-2-2, handwheel 2 5-2-3, bracket 2 5-2-5, positioning pin 2 5-2-6, third core die bracket 5-3, positioning pin 3 5-3-6, fourth core die bracket 5-4, positioning pin 4 5-4-6, fifth core die bracket 5-5, positioning pin 5 5-5-6, sixth core die bracket 5-6, positioning pin 6 5-6-6, seventh core die bracket 5-7, positioning pin 7 5-7-6, eighth core die bracket 5-8, end plate 8 5-8-3, filament winding shaft 8 5-8-4, positioning pin 8 5-8-6, combined bracket 6, frame 6-1, limit block 6-2, inlet tank bracket 7, support frame 7-1, positioning pin 9 7-2, demolding bracket 8, demolding tool 9, screw 9-1, nut 9-2, R-angle filler 10, L-side ply 12 of the first T-shaped composite circumferential rib 11, R-side ply 13 of the first T-shaped composite circumferential rib 11, L-side ply 14 of the second T-shaped composite circumferential rib 27, R-side ply 15 of the second T-shaped composite circumferential rib 27, L-side ply 16 of the third T-shaped composite circumferential rib 28, R-side ply 17 of the third T-shaped composite circumferential rib 28, L-side ply 18 of the fourth T-shaped composite circumferential rib 29, R-side ply 19 of the fourth T-shaped composite circumferential rib 29, L-side ply 20 of the fifth T-shaped composite circumferential rib 30, R-side ply 21 of the fifth T-shaped composite circumferential rib 30, L-side ply 22 of the sixth T-shaped composite circumferential rib 31, R-side ply 23 of the sixth T-shaped composite circumferential rib 31, L-side ply 24 of the seventh T-shaped composite circumferential rib 32, R-side ply 25 of the seventh T-shaped composite circumferential rib 32, cylinder 26, rib positioning card plate 27, cylinder forming die body 28. Detailed implementation manners

[0073] As Figures 1 - 26As shown in the figure, this embodiment discloses a method for integrally forming a T-shaped composite material circumferential rib and a cylinder body. The forming method is realized by using a forming tooling for the T-shaped composite material circumferential rib and the cylinder body. The forming tooling includes a main tooling and an auxiliary tooling. The main tooling includes an R-angle filler forming die 1, a composite material cover plate forming die 2, an inlet tank bracket 7, N sets of core die assemblies and N core die brackets, where N≥3; the auxiliary tooling includes a combined bracket 6. The method includes the following steps:

[0074] Step 1: Move the unassembled forming tooling into the purification room. After cleaning the surface, assemble it according to the tooling functions respectively.

[0075] Step 2: Use the R-angle filler forming die 1 to complete the forming of the R-angle filler 10 (both the structure of the R-angle filler forming die 1 and the R-angle filler forming process are prior arts); use the composite material cover plate forming die 2 to complete the forming of the composite material cover plate 3 (both the structure of the composite material cover plate forming die 2 and the composite material cover plate forming process are prior arts). Then, use the drill die 2-1 to drill positioning holes 3-1 on the formed composite material cover plate 3 for positioning with the main body of the forming die for the T-shaped composite material circumferential rib and the cylinder body.

[0076] The number of the positioning holes 3-1 is four, one of which is a circular hole, and the other three are oblong holes. The long axis direction of the oblong holes is the same as the direction of the connection line between the center of the circular hole and the center of the oblong holes (mainly considering the different expansion coefficients of the composite material cover plate 3 and the main body of the cylinder body forming die).

[0077] Step 3: After respectively combining and positioning N sets of core die assemblies with N core die brackets one by one, complete the laying of the L-side layers of N-1 T-shaped composite material circumferential ribs and the laying of N-1 R-side layers.

[0078] Step 4: Disassemble the first set of core die assemblies 4-1 in the N sets of core die assemblies from the first core die bracket 5-1 among the N core die brackets.

[0079] Step 5: Place the first set of core die assemblies 4-1 containing the L-side layer 12 of the first T-shaped composite material circumferential rib 11, the end plate 1 5-1-1 and the filament winding shaft 1 5-1-2 of the first core die bracket 5-1 on the frame 6-1 of the combined bracket 6, and place the L-side layer 12 of the first T-shaped composite material circumferential rib 11 facing upward. The filament winding shaft 1 5-1-2 is placed vertically and is detachably and fixedly connected to the end plate 1 5-1-1. The end plate 1 5-1-1 is detachably and fixedly connected to the limit block 6-2 of the combined bracket 6 (by screws) (limit by using the limit block 6-2. The transfer and flipping processes can be completed with the help of a crane); the limit block 6-2 is detachably and fixedly connected to the frame 6-1.

[0080] Step 6: After the remaining N - 1 sets of core mold components and the remaining N - 1 core mold brackets are disassembled, stack the remaining N - 1 sets of core mold components on the first set of core mold components 4 - 1 in sequence from bottom to top, and arrange the L - side layup and R - side layup of adjacent two sets of core mold components adjacent to each other. Position (using cylindrical pins) and detachably connect (using screws and flat washers) between adjacent two sets of core mold components;

[0081] Step 7: Install the end plate N and the fiber placement shaft N of the Nth core mold bracket on the Nth set of core mold components from bottom to top. At this time, the N sets of core mold components, the end plate 1 5 - 1 - 1, the end plate N, the fiber placement shaft 1 5 - 1 - 2, and the fiber placement shaft N form the main body of the T - shaped composite circumferential rib and cylinder forming die;

[0082] Step 8: Move the above - mentioned combined bracket 6 and the main body of the T - shaped composite circumferential rib and cylinder forming die (including the layup) near the in - tank bracket 7, and use the overhead crane to complete the separation of the combined bracket 6 from the main body of the T - shaped composite circumferential rib and cylinder forming die (including the layup), and combine and position the main body of the T - shaped composite circumferential rib and cylinder forming die (including the layup) with the in - tank bracket 7 (the fiber placement shaft 1 5 - 1 - 2 and the fiber placement shaft N of the main body of the T - shaped composite circumferential rib and cylinder forming die are respectively positioned and connected to the support frame 7 - 1 of the in - tank bracket 7). After that, place the R - angle filler 10 at the intersection of the outer peripheral end faces of adjacent two sets of core mold components (after the placement of the R - angle filler 10, as Figure 22 shown);

[0083] Step 9: Separate the main body of the T - shaped composite circumferential rib and cylinder forming die (including the layup) from the in - tank bracket 7, and then combine it with the chuck of the fiber placement machine. Lay the composite material on the outer circumferential surface of the main body of the T - shaped composite circumferential rib and cylinder forming die to complete the laying of the cylinder 26;

[0084] Step 10: After the laying of the cylinder 26 is completed, re - position and place the main body of the T - shaped composite circumferential rib and cylinder forming die on the in - tank bracket 7, and install the composite material cover plate 3 on the outer circumferential surface of the main body of the T - shaped composite circumferential rib and cylinder forming die and position it (using the positioning pin 3 - 2) (assembling the composite material cover plate 3 can not only ensure the outer shape size of the cylinder 26, but also improve the surface quality of the cylinder 26);

[0085] Step 11: Package and cure in the curing tank the main body of the T - shaped composite circumferential rib and cylinder forming die with the composite material cover plate 3 installed (these processes are all prior arts); realize the co - curing forming of the cylinder 26 and the T - shaped composite circumferential rib, reduce the number of assembly times, reduce the cumulative error, and save working hours.

[0086] Step Twelve: After curing is completed, remove the T-shaped composite circumferential ribs with the composite cover plate 3 installed and the main body of the cylindrical forming die from the curing tank, transfer the T-shaped composite circumferential ribs and the main body of the cylindrical forming die to the demolding bracket 8, remove the first end plate 5-1-1, the end plate N, the first filament winding shaft 5-1-2 and the filament winding shaft N, and complete the drilling of the assembly holes (drill the assembly holes on the demolding bracket 8). Then, remove the positioning connecting parts between the cores in the core mold assembly, and use the demolding tool 9 to complete the demolding of the T-shaped composite circumferential ribs and the cylinder. Finally, perform subsequent processes such as trimming and inspection.

[0087] Further, the value range of N is 3 to 14, and the preparation of 2 - 13 T-shaped composite circumferential ribs can be completed.

[0088] Further, in Step One, when the environmental temperature and humidity conditions in the purification room meet the requirements, the temperature is 18 - 22°C, and the relative humidity is 45 - 65%. The purpose is to avoid layup defects and ensure the forming quality of the parts.

[0089] Further, in Step Three, the outer circumferential surface diameters at both ends of the core mold assembly are the same. After the N groups of core mold assemblies are respectively combined and positioned with N core mold brackets one by one, the laying of the L-side layup and the R-side layup of N - 1 T-shaped composite circumferential ribs is completed; the specific process is as follows:

[0090] First, combine the first group of core mold assemblies 4-1 with the first core mold bracket 5-1 and (use the first positioning pin 5-1-6) for positioning. Then, lay the composite material at the annular intersection at one end of the outer circumferential surface of the first group of core mold assemblies 4-1 to complete the laying of the L-side layup 12 of the first T-shaped composite circumferential rib 11 (the laying process is an existing technology);

[0091] Then, among the remaining N - 1 groups of core mold assemblies, after removing the Nth group of core mold assemblies, combine and position the remaining core mold assemblies with the corresponding core mold brackets respectively. Then, lay the composite material at the annular intersections at both ends of the outer circumferential surface of each group of core mold assemblies to complete the laying of the R-side layup and the L-side layup of the corresponding T-shaped composite circumferential ribs (the laying process is an existing technology);

[0092] Finally, combine and position the Nth group of core mold assemblies with the Nth core mold bracket. Then, lay the composite material at the annular intersection at one end of the outer circumferential surface of the Nth group of core mold assemblies to complete the laying of the R-side layup of the (N - 1)th T-shaped composite circumferential rib.

[0093] Further, in Step Three, the outer circumferential surface diameters at both ends of the core mold assembly are different. After the N groups of core mold assemblies are respectively combined and positioned with N core mold brackets one by one, the laying of the L-side layup and the R-side layup of N - 1 T-shaped composite circumferential ribs is completed; the specific process is as follows:

[0094] First, combine the first set of core mold components 4-1 with the first core mold bracket 5-1 and position them (using the positioning pin 5-1-6). Then, lay the composite material at the small-diameter end annular intersection angle on the outer circumferential surface of the first set of core mold components 4-1 to complete the laying of the L-side ply 12 of the first T-shaped composite circumferential rib 11 (the laying process is an existing technology).

[0095] Then, among the remaining N-1 sets of core mold components, after removing the Nth set of core mold components, combine and position each of the remaining core mold components with the corresponding core mold bracket. Then, lay the composite material at the small-diameter end annular intersection angle on the outer circumferential surface of each set of core mold components to complete the laying of the R-side ply of the corresponding T-shaped composite circumferential rib; lay the composite material at the large-diameter end annular intersection angle on the outer circumferential surface of each set of core mold components to complete the laying of the L-side ply of the corresponding T-shaped composite circumferential rib (the laying process is an existing technology).

[0096] Finally, combine and position the Nth set of core mold components with the Nth core mold bracket. Then, lay the composite material at the small-diameter end annular intersection angle on the outer circumferential surface of the Nth set of core mold components to complete the laying of the R-side ply of the (N-1)th T-shaped composite circumferential rib.

[0097] Furthermore, the N sets of core mold components have the same structure and each includes four core molds, namely the front core mold 4-1-1, the rear core mold 4-1-2, the upper core mold 4-1-3, and the lower core mold 4-1-4; the upper core mold 4-1-3 and the lower core mold 4-1-4 are respectively positioned with the front core mold 4-1-1 and the rear core mold 4-1-2 (through the cylindrical pin 4-18) and are detachably and fixedly connected (through the screws 4-16 and flat washers 4-17).

[0098] Furthermore, the material of the abdominal plate surface on the adjacent side between the first set of core mold components 4-1 and the second set of core mold components 4-2 is steel, and the material of the abdominal plate surface on the adjacent side between the Nth set of core mold components and the (N-1)th set of core mold components is silicone rubber. Except for the first set of core mold components 4-1 and the Nth set of core mold components, the materials of the abdominal plate surfaces on both sides of the remaining core mold components are either steel or silicone rubber, so that one side of the abdominal plate surface of the T-shaped composite circumferential rib is steel and the other side is silicone rubber.

[0099] Furthermore, in step eight, after placing the R-angle filler 10 at the intersection angle of the outer peripheral end surfaces of two adjacent sets of core mold components, lay the flange of the T-shaped composite circumferential rib outside the R-angle filler 10. This can reduce the number of bagging and pre-pressing times.

[0100] Further, in step twelve, the demolding tool 9 is a positive and reverse threaded demolding rod (an existing tool); both ends of the positive and reverse threaded demolding rod are detachably connected to the front core mold 4-1-1 and the rear core mold 4-1-2 of the corresponding core mold assembly respectively. By rotating the positive and reverse threaded nut in the middle of the positive and reverse threaded demolding rod, the front core mold 4-1-1 and the rear core mold 4-1-2 move inwards; similarly, both ends of the positive and reverse threaded demolding rod are detachably connected to the upper core mold 4-1-3 and the lower core mold 4-1-4 of the corresponding core mold assembly respectively. By rotating the positive and reverse threaded nut in the middle of the positive and reverse threaded demolding rod, the upper core mold 4-1-3 and the lower core mold 4-1-4 move inwards, thereby completing the demolding of each core mold assembly and finally realizing the demolding of the T-shaped composite material circumferential rib and the cylindrical part (as Figure 20 , Figure 21 shown).

[0101] Connecting plates are provided on the front core mold 4-1-1, the rear core mold 4-1-2, the upper core mold 4-1-3 and the lower core mold 4-1-4. Through holes one are provided on the connecting plates. The U-shaped notches at both ends of the positive and reverse threaded demolding rod are arranged outside the connecting plates. Through holes two are provided on the side walls of the U-shaped notches. The U-shaped notches at both ends of the positive and reverse threaded demolding rod are connected to the connecting plates through screws 9-1 and nuts 9-2.

[0102] Further, the first core mold bracket 5-1 includes a handwheel one 5-1-3, two end plates one 5-1-1, two wire laying shafts one 5-1-2, two positioning pins one 5-1-6 and two brackets one 5-1-5;

[0103] The two brackets one 5-1-5 are symmetrically arranged on the left and right. The two wire laying shafts one 5-1-2 are coaxially arranged in the grooves at the upper ends of the two brackets one 5-1-5. A plurality of jacks one are evenly distributed along the circumferential direction on the outer walls of the two wire laying shafts one 5-1-2. The positioning pins one 5-1-6 pass through the two corresponding upper and lower jacks one and are inserted into the positioning holes one provided at the upper ends of the brackets one 5-1-5. The opposite ends of the two wire laying shafts one 5-1-2 are respectively detachably and fixedly connected to the middle parts of the corresponding end plates one 5-1-1. When the first group of core mold assemblies 4-1 and the first core mold bracket 5-1 are combined, the two end plates one 5-1-1 are detachably and fixedly connected to the two opposite side surfaces of the first group of core mold assemblies 4-1. A handwheel one 5-1-3 is fixedly installed at the outer end of the wire laying shaft one 5-1-2 on the side of the first group of core mold assemblies 4-1 where the laying layer is located. The structure of the Nth core mold bracket is the same as that of the first core mold bracket 5-1.

[0104] The difference between the structures of the remaining core mold brackets and the first core mold bracket 5-1 is only that: two handwheels are provided, and the two handwheels are fixedly installed on the two wire laying shafts.

[0105] Example 1:

[0106] This embodiment records a method for integrally forming a T-shaped composite circumferential rib and a cylinder. The forming method is realized by using a T-shaped composite circumferential rib and a cylinder forming tooling. The forming tooling includes a main tooling and an auxiliary tooling. The main tooling includes an R-angle filler forming die 1, a composite material cover plate forming die 2, an inlet tank bracket 7, eight groups of core die components and eight core die brackets; the auxiliary tooling includes a combined bracket 6;

[0107] The eight groups of core die components are the first group of core die components 4-1, the second group of core die components 4-2, the third group of core die components 4-3, the fourth group of core die components 4-4, the fifth group of core die components 4-5, the sixth group of core die components 4-6, the seventh group of core die components 4-7 and the eighth group of core die components 4-8; the eight core die brackets are the first core die bracket 5-1, the second core die bracket 5-2, the third core die bracket 5-3, the fourth core die bracket 5-4, the fifth core die bracket 5-5, the sixth core die bracket 5-6, the seventh core die bracket 5-7 and the eighth core die bracket 5-8; the method includes the following steps:

[0108] Step 1: Move the unassembled forming tooling into the purification room. After cleaning the surface, assemble it respectively (according to the tooling function);

[0109] Step 2: Use the R-angle filler forming die 1 to complete the forming of the R-angle filler 10 (the structure of the R-angle filler forming die 1 and the R-angle filler forming process are both prior arts); use the composite material cover plate forming die 2 to complete the forming of the composite material cover plate 3 (the structure of the composite material cover plate forming die 2 and the composite material cover plate forming process are both prior arts), and then drill positioning holes 3-1 for positioning with the main body of the T-shaped composite circumferential rib and cylinder forming die on the formed composite material cover plate 3 (using the drill jig 2-1);

[0110] The number of the positioning holes 3-1 is four, one of which is a circular hole, and the other three are oblong holes. The long axis direction of the oblong holes is consistent with the direction of the connection line between the center of the circular hole and the center of the oblong holes (mainly considering the different expansion coefficients of the composite material cover plate 3 and the main body of the cylinder forming die).

[0111] Step 3: After respectively combining and positioning the eight groups of core die components with the eight core die brackets one by one, complete the laying of the laying layers on the L side and the R side of seven T-shaped composite circumferential ribs;

[0112] Step 4: Disassemble the first group of core die components 4-1 and the first core die bracket 5-1;

[0113] Step 5: Place the first set of mandrel assemblies 4-1 of the L-side ply 12 of the first T-shaped composite circumferential rib 11, the end plate 5-1-1 of the first mandrel bracket 5-1, and the filament winding shaft 5-1-2 on the frame 6-1 of the combined bracket 6, with the L-side ply 12 of the first T-shaped composite circumferential rib 11 facing upward. The filament winding shaft 5-1-2 is placed vertically and is detachably and fixedly connected to the end plate 5-1-1. The end plate 5-1-1 is detachably and fixedly connected (by screws) to the limit block 6-2 of the combined bracket 6 (using the limit block 6-2 for positioning. The transfer and flipping processes can be completed with the help of a crane). The limit block 6-2 is detachably and fixedly connected to the frame 6-1;

[0114] Step 6: After disassembling the remaining seven sets of mandrel assemblies and the remaining seven mandrel brackets, stack the second set of mandrel assemblies 4-2 to the eighth set of mandrel assemblies 4-8 on the first set of mandrel assemblies 4-1 in sequence from bottom to top, and make the plies of adjacent sets of mandrel assemblies adjacent to each other. Position (using cylindrical pins) and detachably connect (using screws and flat washers) between each mandrel assembly;

[0115] Step 7: Install the end plate 5-8-3 of the eighth mandrel bracket 5-8 and the filament winding shaft 5-8-4 on the upper end of the eighth set of mandrel assemblies 4-8 from bottom to top. At this time, the eight mandrel assemblies, the end plate 5-1-1, the end plate 5-8-3, the filament winding shaft 5-1-2, and the filament winding shaft 5-8-4 form the main body of the forming die for the T-shaped composite circumferential rib and the cylinder;

[0116] Step 8: Move the above-mentioned combined bracket 6 and the main body of the forming die for the T-shaped composite circumferential rib and the cylinder (including the ply) near the in-tank bracket 7, and use a crane to complete the separation of the combined bracket 6 from the main body of the forming die for the T-shaped composite circumferential rib and the cylinder (including the ply), and combine the main body of the forming die for the T-shaped composite circumferential rib and the cylinder (including the ply) with the in-tank bracket 7. Use the positioning pin 7-2 for positioning (the filament winding shaft 5-1-2 and the filament winding shaft 5-2-4 of the main body of the forming die for the T-shaped composite circumferential rib and the cylinder are respectively positioned and connected to the support frame 7-1 of the in-tank bracket 7 through the positioning pin 7-2). After that, place the R-angle filler 10 at the intersection angle of the outer peripheral end faces of adjacent sets of mandrel assemblies (complete the placement of the R-angle filler 10, as Figure 22 shown);

[0117] Step 9: Separate the main body of the forming die for the T-shaped composite circumferential rib and the cylinder (including the ply) from the in-tank bracket 7, and then combine it with the filament winding machine (chuck). Lay the composite material on the outer circumferential surface of the main body of the forming die for the T-shaped composite circumferential rib and the cylinder to complete the laying of the cylinder 26;

[0118] Step Ten: After the laying of the cylinder body 26 is completed, position and place the T-shaped composite material circumferential ribs and the main body of the cylinder forming die on the inlet tank bracket 7 again. Install the composite material cover plate 3 on the outer circumferential surface of the T-shaped composite material circumferential ribs and the main body of the cylinder forming die and position it (using the positioning pin 3-2) (assembling the composite material cover plate 3 can not only ensure the external dimensions of the cylinder body 26, but also improve the surface quality of the cylinder body 26);

[0119] Step Eleven: Seal and cure in a curing tank the T-shaped composite material circumferential ribs and the main body of the cylinder forming die with the composite material cover plate 3 installed (these processes are all prior arts); realize the co-curing forming of the cylinder body 26 and the T-shaped composite material circumferential ribs, reduce the number of assembly times, reduce the cumulative error, and save working hours.

[0120] Step Twelve: After curing is completed, remove the T-shaped composite material circumferential ribs and the main body of the cylinder forming die with the composite material cover plate 3 installed from the curing tank, transfer the T-shaped composite material circumferential ribs and the main body of the cylinder forming die to the demolding bracket 8, disassemble the first end plate 5-1-1, the eighth end plate 5-8-3, the first filament winding shaft 5-1-2, and the eighth filament winding shaft 5-8-4, and complete the drilling of the assembly holes (drill the assembly holes on the demolding bracket 8). Then, disassemble the positioning connecting parts between the mandrels in the mandrel assembly, and complete the demolding of the T-shaped composite material circumferential ribs and the cylinder body with the aid of the demolding tool 9. Finally, perform subsequent processes such as trimming and inspection.

[0121] Taking the first group of mandrel assemblies 4-1 as an example, the demolding sequence is the front mandrel 4-1-1, the rear mandrel 4-1-2, the upper mandrel 4-1-3, and the lower mandrel 4-1-4 of the first group of mandrel assemblies 4-1.

[0122] Further, in Step One, when the environmental temperature and humidity conditions in the purification room meet the requirements, the temperature is 18 - 22°C, and the relative humidity is 45 - 65%. The purpose is to avoid laying defects and ensure the forming quality of the parts.

[0123] Further, in Step Three, after respectively combining and positioning the eight groups of mandrel assemblies with the eight mandrel brackets one by one, complete the laying of the laying layers on the L side and the R side of the seven T-shaped composite material circumferential ribs; the specific process is as follows:

[0124] First, combine the first group of mandrel assemblies 4-1 with the first mandrel bracket 5-1 and position it (using the first positioning pin 5-1-6). Then, lay the composite material at the small-diameter end annular intersection of the outer circumferential surface of the first group of mandrel assemblies 4-1 to complete the laying of the laying layer 12 on the L side of the first T-shaped composite material circumferential rib 11 (the laying process is a prior art);

[0125] The second group of core mold components 4-2 is combined with the second core mold bracket 5-2 and positioned (using the second positioning pin 5-2-6). After that, composite materials are laid at the annular intersection angle at the small-diameter end of the outer circumferential surface of the second group of core mold components 4-2 to complete the laying of the R-side layer 13 of the first T-shaped composite material circumferential rib 11; composite materials are laid at the annular intersection angle at the large-diameter end of the outer circumferential surface of the second group of core mold components 4-2 to complete the laying of the L-side layer 14 of the second T-shaped composite material circumferential rib 27 (the laying process is an existing technology);

[0126] The third group of core mold components 4-3 is combined with the third core mold bracket 5-3 and positioned (using the third positioning pin 5-3-6). After that, composite materials are laid at the annular intersection angle at the small-diameter end of the outer circumferential surface of the third group of core mold components 4-3 to complete the laying of the R-side layer 15 of the second T-shaped composite material circumferential rib 27; composite materials are laid at the annular intersection angle at the large-diameter end of the outer circumferential surface of the third group of core mold components 4-3 to complete the laying of the L-side layer 16 of the third T-shaped composite material circumferential rib 28 (the laying process is an existing technology);

[0127] The fourth group of core mold components 4-4 is combined with the fourth core mold bracket 5-4 and positioned (using the fourth positioning pin 5-4-6). After that, composite materials are laid at the annular intersection angle at the small-diameter end of the outer circumferential surface of the fourth group of core mold components 4-4 to complete the laying of the R-side layer 17 of the third T-shaped composite material circumferential rib 28; composite materials are laid at the annular intersection angle at the large-diameter end of the outer circumferential surface of the fourth group of core mold components 4-4 to complete the laying of the L-side layer 18 of the fourth T-shaped composite material circumferential rib 29 (the laying process is an existing technology);

[0128] The fifth group of core mold components 4-5 is combined with the fifth core mold bracket 5-5 and positioned (using the fifth positioning pin 5-5-6). After that, composite materials are laid at the annular intersection angle at the small-diameter end of the outer circumferential surface of the fifth group of core mold components 4-5 to complete the laying of the R-side layer 19 of the fourth T-shaped composite material circumferential rib 29; composite materials are laid at the annular intersection angle at the large-diameter end of the outer circumferential surface of the fifth group of core mold components 4-5 to complete the laying of the L-side layer 20 of the fifth T-shaped composite material circumferential rib 30 (the laying process is an existing technology);

[0129] The sixth group of core mold components 4-6 is combined with the sixth core mold bracket 5-6 and positioned (using the sixth positioning pin 5-6-6). After that, composite materials are laid at the annular intersection angle at the small-diameter end of the outer circumferential surface of the sixth group of core mold components 4-6 to complete the laying of the R-side layer 21 of the fifth T-shaped composite material circumferential rib 30; composite materials are laid at the annular intersection angle at the large-diameter end of the outer circumferential surface of the sixth group of core mold components 4-6 to complete the laying of the L-side layer 22 of the sixth T-shaped composite material circumferential rib 31 (the laying process is an existing technology);

[0130] The seventh core mold assembly 4-7 is combined with the seventh core mold bracket 5-7 and positioned (using the seventh positioning pin 5-7-6). After that, composite materials are laid on the small-diameter end annular intersection angle of the outer circumferential surface of the seventh core mold assembly 4-7 to complete the laying of the R-side ply 23 of the sixth T-shaped composite circumferential rib 31; composite materials are laid on the large-diameter end annular intersection angle of the outer circumferential surface of the seventh core mold assembly 4-7 to complete the laying of the L-side ply 24 of the seventh T-shaped composite circumferential rib 32 (the laying process is the prior art);

[0131] The eighth core mold assembly 4-8 is combined with the eighth core mold bracket 5-8 and positioned (using the eighth positioning pin 5-8-6). After that, composite materials are laid on the small-diameter end annular intersection angle of the outer circumferential surface of the eighth core mold assembly 4-8 to complete the laying of the R-side ply 25 of the seventh T-shaped composite circumferential rib 32.

[0132] Furthermore, in step six, the second core mold assembly 4-2 to the eighth core mold assembly 4-8 are stacked on the first core mold assembly 4-1 in sequence from bottom to top; the specific process is as follows:

[0133] Stack the second set of core mold components 4-2 (including the R-side ply 13 of the first T-shaped composite circumferential rib 11 and the L-side ply 14 of the second T-shaped composite circumferential rib 27), the third set of core mold components 4-3 (including the R-side ply 15 of the second T-shaped composite circumferential rib 27 and the L-side ply 16 of the third T-shaped composite circumferential rib 28), the fourth set of core mold components 4-4 (including the R-side ply 17 of the third T-shaped composite circumferential rib 28 and the L-side ply 18 of the fourth T-shaped composite circumferential rib 29), the fifth set of core mold components 4-5 (including the R-side ply 19 of the fourth T-shaped composite circumferential rib 29 and the L-side ply 20 of the fifth T-shaped composite circumferential rib 30), the sixth set of core mold components 4-6 (including the R-side ply 21 of the fifth T-shaped composite circumferential rib 30 and the L-side ply 22 of the sixth T-shaped composite circumferential rib 31), the seventh set of core mold components 4-7 (including the R-side ply 23 of the sixth T-shaped composite circumferential rib 31 and the L-side ply 24 of the seventh T-shaped composite circumferential rib 32), and the eighth set of core mold components 4-8 (including the R-side ply 25 of the seventh T-shaped composite circumferential rib 32) on top of the first set of core mold components 4-1 from bottom to top; and make the R-side ply 13 of the first T-shaped composite circumferential rib 11 of the second set of core mold components 4-2 adjacent to the L-side ply 12 of the first T-shaped composite circumferential rib 11 of the first set of core mold components 4-1; the L-side ply 14 of the second T-shaped composite circumferential rib 27 of the second set of core mold components 4-2 adjacent to the R-side ply 15 of the second T-shaped composite circumferential rib 27 of the third set of core mold components 4-3; the L-side ply 16 of the third T-shaped composite circumferential rib 28 of the third set of core mold components 4-3 adjacent to the R-side ply 17 of the third T-shaped composite circumferential rib 28 of the fourth set of core mold components 4-4; the L-side ply 18 of the fourth T-shaped composite circumferential rib 29 of the fourth set of core mold components 4-4 adjacent to the R-side ply 19 of the fourth T-shaped composite circumferential rib 29 of the fifth set of core mold components 4-5; the L-side ply 20 of the fifth T-shaped composite circumferential rib 30 of the fifth set of core mold components 4-5 adjacent to the R-side ply 21 of the fifth T-shaped composite circumferential rib 30 of the sixth set of core mold components 4-6; the L-side ply 22 of the sixth T-shaped composite circumferential rib 31 of the sixth set of core mold components 4-6 adjacent to the R-side ply 23 of the sixth T-shaped composite circumferential rib 31 of the seventh set of core mold components 4-7; and the L-side ply 24 of the seventh T-shaped composite circumferential rib 32 of the seventh set of core mold components 4-7 adjacent to the R-side ply 25 of the seventh T-shaped composite circumferential rib 32 of the eighth set of core mold components 4-8.

[0134] Further, the eight sets of core mold components have the same structure and each includes four core molds, namely a front core mold 4-1-1, a rear core mold 4-1-2, an upper core mold 4-1-3, and a lower core mold 4-1-4. The upper core mold 4-1-3 and the lower core mold 4-1-4 are respectively positioned with the front core mold 4-1-1 and the rear core mold 4-1-2 (through the cylindrical pin 4-18) and are detachably and fixedly connected (through the screw 4-16 and the flat washer 4-17).

[0135] Further, relative to the first T-shaped composite circumferential rib 11, the material of the abdominal plate surface on the adjacent side of the first set of core mold components 4-1 and the second set of core mold components 4-2 is steel (so that one side of the abdominal plate surface is a hard surface, and the other side expands by means of silicone rubber to provide pressure for the first T-shaped composite circumferential rib 11, as Figure 25 shown); relative to the second to the seventh T-shaped composite circumferential ribs, the materials of the abdominal plate surfaces on both sides of the second set of core mold components 4-2 are silicone rubber, the materials of the abdominal plate surfaces on both sides of the third set of core mold components 4-3 are steel, the materials of the abdominal plate surfaces on both sides of the fourth set of core mold components 4-4 are silicone rubber, the materials of the abdominal plate surfaces on both sides of the fifth set of core mold components 4-5 are steel, the materials of the abdominal plate surfaces on both sides of the sixth set of core mold components 4-6 are silicone rubber, the materials of the abdominal plate surfaces on both sides of the seventh set of core mold components 4-7 are steel, and the material of the abdominal plate surface on the adjacent side of the eighth set of core mold components 4-8 and the seventh set of core mold components 4-7 is silicone rubber (so that one side of the abdominal plate surface of the T-shaped composite circumferential rib is soft and the other side is hard, which is conducive to pressurizing the abdominal plate surface of the T-shaped composite circumferential rib, as Figure 25 shown).

[0136] Further, in step eight, after placing the R-angle filler 10 at the intersection angle of the outer peripheral end faces of two adjacent sets of core mold components, the flange of the T-shaped composite circumferential rib is laid on the outside of the R-angle filler 10. This can reduce the number of bagging and pre-pressing times.

[0137] Further, in step twelve, the demolding tool 9 is a positive and reverse thread demolding rod (an existing tool); the two ends of the positive and reverse thread demolding rod are respectively detachably connected to the front core mold 4-1-1 and the rear core mold 4-1-2 of the corresponding core mold components. By rotating the positive and reverse thread nuts in the middle of the positive and reverse thread demolding rod, the front core mold 4-1-1 and the rear core mold 4-1-2 move inward; similarly, the two ends of the positive and reverse thread demolding rod are respectively detachably connected to the upper core mold 4-1-3 and the lower core mold 4-1-4 of the corresponding core mold components. By rotating the positive and reverse thread nuts in the middle of the positive and reverse thread demolding rod, the upper core mold 4-1-3 and the lower core mold 4-1-4 move inward, thereby completing the demolding of each set of core mold components and finally realizing the demolding of the T-shaped composite circumferential rib and the cylindrical part (as Figure 20 、 Figure 21 shown).

[0138] The front core mold 4-1-1, the rear core mold 4-1-2, the upper core mold 4-1-3 and the lower core mold 4-1-4 are all provided with connecting plates. There is a first through hole on the connecting plate. The U-shaped notch at both ends of the positive and reverse thread demolding rods is arranged outside the connecting plate. There is a second through hole on the side wall of the U-shaped notch. The U-shaped notch at both ends of the positive and reverse thread demolding rods is connected to the connecting plate through screws 9-1 and nuts 9-2.

[0139] Further, the first core mold bracket 5-1 includes a first handwheel 5-1-3, two first end plates 5-1-1, two first fiber placement shafts 5-1-2, two first positioning pins 5-1-6 and two first brackets 5-1-5;

[0140] The two first brackets 5-1-5 are symmetrically arranged on the left and right. The two first fiber placement shafts 5-1-2 are coaxially arranged in the grooves at the upper ends of the two first brackets 5-1-5. A plurality of first jacks are evenly distributed along the circumferential direction on the outer walls of the two first fiber placement shafts 5-1-2. The first positioning pins 5-1-6 pass through the two corresponding upper and lower first jacks and are inserted into the first positioning holes provided at the upper ends of the first brackets 5-1-5. The opposite ends of the two first fiber placement shafts 5-1-2 are respectively detachably and fixedly connected to the middle parts of the corresponding first end plates 5-1-1. When the first group of core mold components 4-1 is combined with the first core mold bracket 5-1, the two first end plates 5-1-1 are detachably and fixedly connected to the two opposite side surfaces of the first group of core mold components 4-1. A first handwheel 5-1-3 is fixedly installed at the outer end of the first fiber placement shaft 5-1-2 located on the layup side of the first group of core mold components 4-1. The structure of the eighth core mold bracket 5-8 is the same as that of the first core mold bracket 5-1.

[0141] Further, the second core mold bracket 5-2 includes two second handwheels 5-2-3, two second end plates 5-2-1, two second fiber placement shafts 5-2-2, two second positioning pins 5-2-6 and two second brackets 5-2-5;

[0142] The two second brackets 5-2-5 are symmetrically arranged on the left and right. The two second fiber placement shafts 5-2-2 are coaxially arranged in the grooves at the upper ends of the two second brackets 5-2-5. A plurality of second jacks are evenly distributed along the circumferential direction on the outer walls of the two second fiber placement shafts 5-2-2. The second positioning pins 5-2-6 pass through the two corresponding upper and lower second jacks and are inserted into the second positioning holes provided at the upper ends of the second brackets 5-2-5. The opposite ends of the two second fiber placement shafts 5-2-2 are respectively detachably and fixedly connected to the middle parts of the corresponding second end plates 5-2-1. The outer ends of the two second fiber placement shafts 5-2-2 are both fixedly installed with second handwheels 5-2-3. When the second group of core mold components 4-2 is combined with the second core mold bracket 5-2, the two second end plates 5-2-1 are detachably and fixedly connected to the two opposite side surfaces of the second group of core mold components 4-2. The structures of the third core mold bracket 5-3 to the seventh core mold bracket 5-7 are the same as that of the second core mold bracket 5-2.

[0143] The combined bracket 6, the can inlet bracket 7, and the demolding bracket 8 in the present invention are all prior arts.

Claims

1. A method for integrally forming a T-shaped composite material annular rib and a cylinder, characterized in that: The molding method is realized by using T-shaped composite material annular ribs and a cylinder molding tool, the molding tool comprises a main tool and an auxiliary tool, the main tool comprises an R-angle filler molding die (1), a composite cover plate molding die (2), a tank inlet bracket (7), N groups of core mold assemblies and N core mold brackets, N≥3; the auxiliary tool comprises a combined bracket (6); the method comprises the following steps: Step 1: Move the unassembled molding tooling into the clean room, clean the surface and assemble them separately; Step 2: using the R-corner filler forming die (1) to complete the forming of the R-corner filler (10); using the composite cover plate forming die (2) to complete the forming of the composite cover plate (3), and then drilling positioning holes (3-1) on the formed composite cover plate (3) for positioning with the T-shaped composite material annular ribs and the main body of the cylinder forming die; Step 3: After N sets of core mold assemblies and N core mold brackets are respectively combined and positioned one by one, N-1 T-shaped composite material hoop rib L-side plies and N-1 R-side plies are laid; Step 4: disassembling the first core mold assembly (4-1) of the N core mold assemblies and the first core mold bracket (5-1) of the N core mold brackets; Step 5: placing the first group of core mold components (4-1) including the L-side ply (12) of the first T-shaped composite annular rib (11), the end plate 1 (5-1-1) and the wire laying shaft 1 (5-1-2) of the first core mold bracket (5-1) on the frame (6-1) of the combined bracket (6), and placing the L-side ply (12) of the first T-shaped composite annular rib (11) upward, the wire laying shaft 1 (5-1-2) being placed vertically and detachably fixedly connected to the end plate 1 (5-1-1), the end plate 1 (5-1-1) being detachably fixedly connected to the limit block (6-2) of the combined bracket (6); the limit block (6-2) being detachably fixedly connected to the frame (6-1); Step 6: After the remaining N-1 groups of core mold assemblies and the remaining N-1 core mold brackets are disassembled, the remaining N-1 groups of core mold assemblies are stacked on the first group of core mold assemblies (4-1) in order from bottom to top, and the L-side plies and R-side plies of two adjacent groups of core mold assemblies are arranged adjacently, and the two adjacent groups of core mold assemblies are positioned and detachably connected; Step 7: Install the end plate N and the wire laying shaft N of the Nth core mold bracket from bottom to top on the Nth core mold assembly. At this time, the Nth core mold assembly, the end plate 1 (5-1-1), the end plate N, the wire laying shaft 1 (5-1-2), and the wire laying shaft N form a T-shaped composite material annular rib and cylinder forming mold body; Step 8: Complete the separation of the combined bracket (6) from the T-shaped composite material annular ribs and the barrel forming mold body, and combine and position the T-shaped composite material annular ribs, the barrel forming mold body and the tank inlet bracket (7), and then place an R angle filler (10) at the intersection of the outer peripheral end faces of two adjacent sets of core mold components; Step nine: Separate the T-shaped composite material annular ribs, the main body of the barrel forming mold from the tank inlet bracket (7), and then combine with a wire laying machine to lay composite materials on the outer circumferential surface of the T-shaped composite material annular ribs and the main body of the barrel forming mold to complete the laying of the barrel (26); Step 10: After the barrel (26) is laid, the T-shaped composite material annular ribs and the barrel forming mold body are positioned again on the tank inlet bracket (7), and the composite material cover plate (3) is installed and positioned on the outer circumferential surface of the T-shaped composite material annular ribs and the barrel forming mold body; Step 11: The T-shaped composite material annular ribs and the main body of the cylinder forming mold installed with the composite material cover plate (3) are encapsulated and put into a curing tank for curing. Step 12: After the curing is completed, the T-shaped composite material annular ribs and the main body of the cylinder forming mold installed with the composite cover plate (3) are moved out of the curing tank, and the T-shaped composite material annular ribs and the main body of the cylinder forming mold are transferred to the demoulding bracket (8), and the end plate 1 (5-1-1), the end plate N, the wire laying shaft 1 (5-1-2) and the wire laying shaft N are disassembled to complete the drilling of the assembly holes. After that, the positioning connectors between the core molds in the core mold assembly are disassembled, and the T-shaped composite material annular ribs and the cylinder are demoulded with the help of the demoulding tool (9).

2. The method for integrally forming a T-shaped composite material annular rib and a cylinder according to claim 1, characterized in that: The value range of N is 3 to 14.

3. The method for integrally forming a T-shaped composite material annular rib and a cylinder according to claim 1, characterized in that: In step 1, when the environmental temperature and humidity conditions in the purification room meet the requirements, the temperature is 18-22° C. and the relative humidity is 45-65%.

4. The method for integrally forming a T-shaped composite material annular rib and a cylinder according to claim 1, characterized in that: In step 3, the outer circumferential surfaces at both ends of the core mold assembly have the same diameter. After the N groups of core mold assemblies are respectively combined and positioned one by one with the N core mold brackets, the laying of N-1 T-shaped composite material hoop ribs L side layers and N-1 R side layers is completed; the specific process is: Firstly, the first core mold assembly (4-1) and the first core mold bracket (5-1) are combined and positioned, and then, the composite material is laid at the annular intersection angle at one end of the outer circumferential surface of the first core mold assembly (4-1) to complete the laying of the L side layer (12) of the first T-shaped composite material annular rib (11); Then, in the remaining N-1 groups of core mold assemblies, after removing the Nth group of core mold assemblies, all the remaining core mold assemblies are respectively combined with the corresponding core mold brackets and positioned, and then, composite materials are respectively laid at the annular intersection angles at both ends of the outer circumferential surface of each group of core mold assemblies to complete the R-side laying and L-side laying of the corresponding T-shaped composite material annular ribs; Finally, the Nth core mold assembly and the Nth core mold bracket are combined and positioned, and then the composite material is laid at the annular intersection angle at one end of the outer circumferential surface of the Nth core mold assembly to complete the R-side laying of the N-1th T-shaped composite material annular rib.

5. The method for integrally forming a T-shaped composite material annular rib and a cylinder according to claim 1, characterized in that: In step 3, the outer circumferential surface diameters at both ends of the core mold assembly are different. After the N groups of core mold assemblies and the N core mold brackets are respectively combined and positioned one by one, the laying of N-1 T-shaped composite material hoop ribs L side layers and N-1 R side layers is completed; the specific process is: Firstly, the first core mold assembly (4-1) and the first core mold bracket (5-1) are combined and positioned, and then, composite material is laid at the annular intersection angle of the small diameter end of the outer circumferential surface of the first core mold assembly (4-1) to complete the laying of the L side layer (12) of the first T-shaped composite material annular rib (11); Then, in the remaining N-1 groups of core mold assemblies, after removing the Nth group of core mold assemblies, all the remaining core mold assemblies are respectively combined and positioned with the corresponding core mold brackets, and then, the composite material is laid at the annular intersection angle of the small diameter end of the outer circumferential surface of each group of core mold assemblies to complete the R-side laying of the corresponding T-shaped composite material annular ribs; the composite material is laid at the annular intersection angle of the large diameter end of the outer circumferential surface of each group of core mold assemblies to complete the L-side laying of the corresponding T-shaped composite material annular ribs; Finally, the Nth group of core mold components and the Nth core mold bracket are combined and positioned, and then the composite material is laid at the annular intersection angle of the small diameter end of the outer circumferential surface of the Nth group of core mold components to complete the R-side laying of the N-1th T-shaped composite material annular rib.

6. A method for integrally forming a T-shaped composite material annular rib and a cylinder according to claim 1, 4 or 5, characterized in that: The N groups of core mold assemblies have the same structure and all include four core molds, which are a front core mold (4-1-1), a rear core mold (4-1-2), an upper core mold (4-1-3) and a lower core mold (4-1-4); the upper core mold (4-1-3) and the lower core mold (4-1-4) are respectively positioned with the front core mold (4-1-1) and the rear core mold (4-1-2) and are detachably fixedly connected.

7. A method for integrally forming a T-shaped composite material annular rib and a cylinder according to claim 4 or 5, characterized in that: The web surface material on one side adjacent to the first group of core mold components (4-1) and the second group of core mold components (4-2) is steel, the web surface material on one side adjacent to the Nth group of core mold components and the N-1th group of core mold components is silicone rubber, and except for the first group of core mold components (4-1) and the Nth group of core mold components, the web surface materials on both sides of the remaining core mold components are all steel or silicone rubber, so that the web surfaces on both sides of the T-shaped composite material annular ribs are steel on one side and silicone rubber on the other side.

8. The method for integrally forming a T-shaped composite material annular rib and a cylinder according to claim 1, characterized in that: In step eight, after placing R-angle fillers (10) at the intersection of the outer peripheral end faces of two adjacent groups of core mold components, edge strips of T-shaped composite material annular ribs are laid on the outside of the R-angle fillers (10).

9. The method for integrally forming a T-shaped composite material annular rib and a cylinder according to claim 6, characterized in that: In step twelve, the demoulding tool (9) is a positive and negative thread demoulding rod; the two ends of the positive and negative thread demoulding rod are detachably connected to the front core mold (4-1-1) and the rear core mold (4-1-2) of the corresponding core mold assembly, and the positive and negative thread nuts in the middle of the positive and negative thread demoulding rods are rotated to achieve the inward movement of the front core mold (4-1-1) and the rear core mold (4-1-2); similarly, the two ends of the positive and negative thread demoulding rod are detachably connected to the upper core mold (4-1-3) and the lower core mold (4-1-4) of the corresponding core mold assembly, and the positive and negative thread nuts in the middle of the positive and negative thread demoulding rods are rotated to achieve the inward movement of the upper core mold (4-1-3) and the lower core mold (4-1-4), thereby completing the demoulding of each group of core mold assemblies, and finally achieving the demoulding of the T-shaped composite material annular ribs and cylinder parts.

10. The method for integrally forming a T-shaped composite material annular rib and a cylinder according to claim 1, characterized in that: The first core mold bracket (5-1) includes a hand wheel (5-1-3), two end plates (5-1-1), two wire laying shafts (5-1-2), two positioning pins (5-1-6) and two brackets (5-1-5); The two brackets (5-1-5) are symmetrically arranged on the left and right, and the two wire laying shafts (5-1-2) are coaxially arranged in the grooves at the upper ends of the two brackets (5-1-5). The outer walls of the two wire laying shafts (5-1-2) are evenly provided with a plurality of plug holes along the circumferential direction. The positioning pin (5-1-6) passes through the two corresponding plug holes and is inserted into the positioning hole (5) at the upper end of the bracket (5-1-5). The two wire laying shafts (5-1-2) The opposite ends are respectively detachably fixedly connected to the middle of the corresponding end plate (5-1-1); when the first group of core mold components (4-1) is combined with the first core mold bracket (5-1), the two end plates (5-1-1) are detachably fixedly connected to the two opposite side surfaces of the first group of core mold components (4-1), and a hand wheel (5-1-3) is fixedly installed on the outer end of the wire laying shaft (5-1-2) located on the laying side of the first group of core mold components (4-1).

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