Thermoplastic composite material T-shaped rib forming mold and using method thereof

Abstract

The invention discloses a thermoplastic composite material T-shaped rib forming mold and a using method thereof, and belongs to the technical field of T-shaped rib forming machining. The thermoplastic composite material T-shaped rib forming mold comprises an L-shaped piece shaping mold and a T-shaped rib curing mold; the L-shaped piece shaping mold comprises a shaping mold side pressing block, a shaping mold rectangular block is arranged on one side of the shaping mold side pressing block, a shaping mold upper pressing block is arranged above the shaping mold rectangular block, and the shaping mold upper pressing block is vertically connected to the shaping mold side pressing block in a sliding mode. The T-shaped rib is decomposed into the two L-shaped pieces, the flat plate and the plug, the L-shaped pieces are subjected to hot-pressing shaping through the L-shaped piece shaping mold, the multiple layers of thermoplastic prepregs only need to be laid and fixed to the shaping mold in order according to the laying sequence, layer-by-layer welding is not needed, and the manufacturing period is shortened.

Description

Technical Field

[0001] This invention relates to the field of T-shaped rib forming and processing technology, specifically to a thermoplastic composite material T-shaped rib forming mold and its usage method. Background Technology

[0002] High-performance thermoplastic composites possess excellent impact resistance, are weldable, and repairable, making them valuable in the aerospace field. Composite stiffened panels are widely used in aircraft, with common stiffener types including T-shaped, cap-shaped, and L-shaped ribs. Among these, T-shaped ribs are the most widely used due to their superior load-bearing capacity.

[0003] Traditionally, the fabrication of T-shaped reinforcement using thermosetting prepregs is relatively simple due to the prepreg's advantages of viscosity and high deformability at room temperature. However, fabricating T-shaped reinforcement using thermoplastic prepregs presents numerous difficulties because thermoplastic prepregs lack viscosity at room temperature and have poor deformability. Common methods for fabricating T-shaped reinforcement include: splitting the T-shaped reinforcement into two L-shaped parts according to the layup, filling, and flat parts (such as...). Figure 1 As shown), prepreg is laid on a square mold with rounded corners using ultrasonic welding to obtain an L-shaped blank. Two L-shaped blanks are then combined, the straight sections are filled and laid, a base plate is placed on top, and hot pressing is used to obtain a T-shaped rib. The drawback of this method is that at the rounded corners ( Figure 1 In the case of R4, it is difficult to fully compact the prepreg or the fibers in the prepreg are easily broken and damaged, resulting in poor internal quality and insufficient strength of the molded T-shaped ribs. Furthermore, the non-adhesive thermoplastic prepreg is laid layer by layer onto the block mold by ultrasonic welding to form an L-shaped preform, which results in a long manufacturing cycle and low production efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a thermoplastic composite T-shaped rib forming mold and its usage method, in order to solve the technical problems of long manufacturing cycle, low production efficiency, and poor quality and insufficient strength of the T-shaped ribs produced by using thermoplastic prepregs in the prior art.

[0005] To achieve the above objectives, one embodiment of the present invention provides a thermoplastic composite material T-rib forming mold, including an L-shaped part shaping mold and a T-rib curing mold; The L-shaped part forming mold includes a forming mold side pressure block, a forming mold rectangular block is provided on one side of the forming mold side pressure block, and a forming mold upper pressure block is provided above the forming mold rectangular block. The forming mold upper pressure block is vertically slidably connected to the forming mold side pressure block.

[0006] In one preferred embodiment of the present invention, the T-shaped rib curing mold includes a first curing mold rectangular block and a second curing mold rectangular block, and a curing mold top cover plate is provided above the first curing mold rectangular block.

[0007] In one preferred embodiment of the present invention, a rounded corner portion of the rectangular block is provided on the upper end face of the shaping mold rectangular block near the side pressure block of the shaping mold, and the radius of the rounded corner portion of the rectangular block is the radius of the T-shaped rib rounded corner - 0.5mm to the radius of the T-shaped rib rounded corner.

[0008] In one preferred embodiment of the present invention, the radius of the rounded corner of the rectangular block is the radius of the rounded corner of the T-shaped rib minus 0.3mm to the radius of the rounded corner of the T-shaped rib minus 0.1mm.

[0009] In one preferred embodiment of the present invention, a step is provided on the side of the shaping mold side pressure block near the rectangular block of the shaping mold, and a rounded corner of the side pressure block is provided at the corner of the step, the radius of the rounded corner of the side pressure block being the radius of the rounded corner of the T-shaped rib plus the thickness of the L-shaped part.

[0010] In one preferred embodiment of the present invention, the length of the step along the width direction of the side pressure block of the shaping mold is the radius of the side pressure block fillet ~ radius of the side pressure block fillet + 10mm.

[0011] In one preferred embodiment of the present invention, the length of the step along the width direction of the side pressure block of the shaping mold is the radius of the side pressure block rounded corner + 3mm to the radius of the side pressure block rounded corner + 5mm.

[0012] In one preferred embodiment of the present invention, the first curing mold rectangular block and the shaping mold rectangular block are the same rectangular block.

[0013] This invention also discloses a method for using a thermoplastic composite T-shaped rib forming mold, which is based on the above-mentioned thermoplastic composite T-shaped rib forming mold and includes the following steps: The T-shaped rib is divided into a filler, a flat plate, and two L-shaped pieces; L-shaped parts are manufactured using L-shaped part shaping molds; The two L-shaped parts prepared are filled using a T-shaped rib curing mold; After the filling process is completed, the flat plate is placed on the T-shaped rib curing mold and hot-pressed to obtain the T-shaped rib.

[0014] One preferred embodiment of the present invention involves using an L-shaped part forming mold to prepare an L-shaped part, comprising: Connect the side pressure block of the shaping mold and the rectangular block of the shaping mold to bend the prepreg blank of the L-shaped part from straight; Place the upper pressure block of the shaping mold above the prepreg blank of the L-shaped part before shaping after bending, connect the side pressure block and the upper pressure block of the shaping mold, and adjust the distance between the upper pressure block and the rectangular block of the shaping mold to obtain the assembled shaping mold. The assembled mold is then shaped and demolded to obtain an L-shaped part.

[0015] One preferred embodiment of the present invention includes a setting process comprising: a setting temperature of -10°C to +10°C of the resin melting temperature in the prepreg, and a setting time of 20 min to 60 min.

[0016] In one preferred embodiment of the present invention, before preparing the L-shaped part using an L-shaped part shaping mold, the L-shaped part is laid flat and the thermoplastic prepreg is cut according to the layup information.

[0017] One preferred embodiment of the present invention involves filling the two L-shaped parts prepared by using a T-shaped rib curing mold, including: placing the two L-shaped parts prepared on the first curing mold rectangular block and the second curing mold rectangular block respectively, and filling the rounded corners of the L-shaped parts with prepreg.

[0018] In summary, the beneficial effects of the present invention are as follows: 1. The present invention first decomposes the T-shaped rib into two L-shaped parts, a flat plate and a filler. The L-shaped parts are hot-pressed and shaped using an L-shaped part shaping mold. The multi-layer thermoplastic prepreg only needs to be neatly laid and fixed on the shaping mold in the layup order, without the need for layer-by-layer welding, which shortens the manufacturing cycle. Furthermore, the multi-layer prepreg is gradually bent by the side pressure block of the shaping mold. During the bending process, the layers of prepreg can slide relative to each other, which will not cause fiber breakage or damage in the prepreg, which is beneficial to improving the strength of the T-shaped rib.

[0019] 2. The T-shaped rib forming mold and its usage method of the present invention solve the technical problems of long manufacturing cycle, low production efficiency and poor quality and insufficient strength of the T-shaped ribs produced by using thermoplastic prepreg in the prior art.

[0020] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention will be apparent from the effects described in the description and the accompanying drawings. Attached Figure Description

[0021] Figure 1 This is an exploded view of the T-shaped reinforcement in an embodiment of the present invention; Figure 2 This is an isometric view of the L-shaped part forming mold in an embodiment of the present invention; Figure 3 This is an exploded view of the L-shaped part forming mold in an embodiment of the present invention; Figure 4 This is an isometric view of the T-shaped rib curing mold in an embodiment of the present invention; Figure 5 This is an exploded view of the T-shaped rib curing mold in an embodiment of the present invention; Figure 6 This is a side view of the L-shaped part forming mold in an embodiment of the present invention; Figure 7 This is a flowchart illustrating the method of using a thermoplastic composite T-shaped rib forming mold in an embodiment of the present invention.

[0022] Among them, 1-Side pressure block of shaping mold, 2-Rectangular block of shaping mold, 3-Upper pressure block of shaping mold, 4-Rectangular block of first curing mold, 5-Rectangular block of second curing mold, 6-Prepreg blank before shaping of L-shaped part, 7-L-shaped part, 8-Rounded corner of rectangular block, 9-Rounded corner of side pressure block, 10-T-shaped rib, 11-Upper cover plate of curing mold. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] The endpoints and any values ​​of the ranges disclosed in this invention are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoint values ​​of the various ranges, the endpoint values ​​of the various ranges and individual point values, and individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be considered as specifically disclosed in this invention.

[0025] The present invention provides a thermoplastic composite material T-shaped rib forming mold, including an L-shaped part shaping mold and a T-shaped rib curing mold. The L-shaped part shaping mold is used to complete the forming of the L-shaped part 7 in the T-shaped rib 10, and the T-shaped rib curing mold is used to combine the two L-shaped parts 7, the plate and the filler to complete the preparation of the T-shaped rib 10.

[0026] The L-shaped part forming mold includes a forming mold side pressure block 1, a forming mold rectangular block 2 is provided on one side of the forming mold side pressure block 1, and a forming mold upper pressure block 3 is provided above the forming mold rectangular block 2. The forming mold upper pressure block 3 is vertically slidably connected to the forming mold side pressure block 1, and the forming mold upper pressure block 3 can slide vertically up and down along the forming mold side pressure block 1.

[0027] The T-shaped rib curing mold includes a first curing mold rectangular block 4 and a second curing mold rectangular block 5. A curing mold upper cover plate 11 is provided above the first curing mold rectangular block 4. Furthermore, the first curing mold rectangular block 4 and the shaping mold rectangular block 2 are the same rectangular block, that is, the L-shaped part shaping mold and the T-shaped rib curing mold share a rectangular block.

[0028] Furthermore, a rounded corner portion 8 is provided on the upper end face of the rectangular block 2 near the side pressure block 1 of the shaping mold. The radius of the rounded corner portion 8 is (T-rib rounded corner radius - 0.5mm) to (T-rib rounded corner radius). Preferably, the radius of the rounded corner portion 8 is (T-rib rounded corner radius - 0.3mm) to (T-rib rounded corner radius - 0.1mm).

[0029] Furthermore, a step is provided on one side of the shaping mold side pressure block 1 near the shaping mold rectangular block 2, and a side pressure block rounded corner 9 is provided at the corner of the step. The radius of the side pressure block rounded corner 9 is the radius of the T-shaped rib rounded corner + the thickness of the L-shaped part 7.

[0030] Furthermore, the length of the step along the width direction of the side pressure block 1 of the shaping mold is the radius of the side pressure block 9 to (radius of the side pressure block 9+10mm). Preferably, the length of the step along the width direction of the side pressure block 1 of the shaping mold is (radius of the side pressure block 9+3mm) to (radius of the side pressure block 9+5mm).

[0031] This invention also discloses a method for using a thermoplastic composite T-shaped rib molding die, based on the aforementioned thermoplastic composite T-shaped rib molding die, which is used to prepare T-shaped ribs 10, such as... Figure 7 As shown, it includes the following steps: Step (1): Disassemble the T-shaped rib 10 into a filler, a flat plate, and two L-shaped pieces 7; Step (2): Prepare L-shaped part 7 using an L-shaped part forming mold; specifically, this includes the following steps: Step (201): Connect the side pressure block 1 of the shaping mold and the rectangular block 2 of the shaping mold to bend the prepreg blank 6 of the L-shaped part before shaping from straight; specifically, connect the side pressure block 1 of the shaping mold to the rectangular block 2 of the shaping mold with bolts, the bolts are equipped with spring washers, and the bolts are gradually tightened. The side pressure block 1 of the shaping mold gradually bends the prepreg blank 6 of the L-shaped part before shaping from straight. During the pressing process, the layers of the prepreg blank 6 of the L-shaped part before shaping can slide. Then tighten the connecting bolts between the rectangular block 2 of the shaping mold and the side pressure block 1 of the shaping mold to compact the prepreg. Step (202): Place the upper pressure block 3 of the shaping mold above the prepreg blank 6 of the L-shaped part before shaping after bending, connect the side pressure block 1 of the shaping mold and the upper pressure block 3 of the shaping mold, and adjust the distance between the upper pressure block 3 of the shaping mold and the rectangular block 2 of the shaping mold to obtain the assembled shaping mold; specifically, including: Step (2021): Place the upper pressure block 3 of the shaping mold on top of the prepreg blank 6 of the bent L-shaped part before shaping. Use bolts to connect the side pressure block 1 of the shaping mold to the upper pressure block 3 of the shaping mold. The bolts are equipped with spring washers. The upper pressure block 3 of the shaping mold can slide vertically up and down along the side pressure block 1 of the shaping mold. Step (2022): Tighten the upper pressure block 3 of the shaping mold to the rectangular block 2 of the shaping mold using bolts; Step (203): The assembled mold is shaped and demolded to obtain L-shaped part 7; specifically, the assembled mold is placed in an oven and the temperature is set to (resin melting temperature in prepreg - 10℃) ~ (resin melting temperature in prepreg + 10℃) for 20min ~ 60min, and then demolded to obtain L-shaped part 7. Preferably, the setting temperature is set to (resin melting temperature in prepreg - 5℃) ~ (resin melting temperature in prepreg + 5℃), and the setting time is 30 min ~ 40 min; Before preparing L-shaped part 7 using L-shaped part shaping mold, L-shaped part 7 is laid flat, thermoplastic prepreg is cut according to the layup information, and the cut multi-layer thermoplastic prepreg is laid and aligned in the layup sequence and then fixed on the rectangular block 2 of shaping mold with tape. Repeat step (2) above to prepare another L-shaped part 7 after shaping; Step (3): The two L-shaped parts 7 prepared are filled by T-shaped rib curing mold; specifically, the two L-shaped parts 7 prepared are placed on the first curing mold rectangular block 4 and the second curing mold rectangular block 5 respectively, and prepreg is filled into the rounded corners of the L-shaped parts 7. Step (4): After the filling process is completed, the flat plate is placed on the T-rib 10 curing mold, and the T-rib 10 is obtained after hot pressing; specifically, it includes: Step (401): After the filling process is completed, place the laid flat multilayer prepreg on the assembled mold and place the curing mold cover plate 11 on top. Step (402): Use high-temperature resistant polyimide tape to wrap the T-shaped rib 10 curing mold assembly into a whole; Step (403): Place the T-shaped rib curing mold assembly in a hot autoclave, and demold it after high temperature and high pressure molding to obtain T-shaped rib 10.

[0032] The present invention first decomposes the T-shaped rib 10 into two L-shaped parts 7, a flat plate and a filler. The L-shaped parts 7 are hot-pressed and shaped using an L-shaped part shaping mold. The multi-layer thermoplastic prepreg only needs to be neatly laid and fixed on the shaping mold in the layup order, without the need for layer-by-layer welding, which shortens the manufacturing cycle. Furthermore, the multi-layer prepreg is gradually bent by the side pressure block 1 of the shaping mold. During the bending process, the layers of prepreg can slide relative to each other, which will not cause fiber breakage or damage in the prepreg, which is beneficial to improving the strength of the T-shaped rib.

[0033] Example 1 A thermoplastic composite T-rib forming mold includes an L-shaped part shaping mold and a T-rib curing mold. The L-shaped part shaping mold includes a shaping mold side pressure block, a shaping mold rectangular block is provided on one side of the shaping mold side pressure block, and a shaping mold upper pressure block is provided above the shaping mold rectangular block. The shaping mold upper pressure block is vertically slidably connected to the shaping mold side pressure block and can slide vertically up and down along the shaping mold side pressure block.

[0034] The T-shaped rib curing mold includes a first curing mold rectangular block and a second curing mold rectangular block. A curing mold top cover plate is provided above the first curing mold rectangular block. Furthermore, the first curing mold rectangular block and the shaping mold rectangular block are the same rectangular block, that is, the L-shaped part shaping mold and the T-shaped rib curing mold share a single rectangular block.

[0035] Furthermore, the upper end face of the rectangular block of the shaping mold is provided with a rounded corner on the side of the shaping mold pressure block, and the radius of the rounded corner is 3.7mm; Furthermore, a step is provided on the side of the shaping mold side pressure block near the rectangular block of the shaping mold, and a rounded corner of the side pressure block is provided at the corner of the step, with a radius of 5mm; Furthermore, the length of the step along the width direction of the side pressure block of the shaping mold is 10mm.

[0036] A method for using a thermoplastic composite T-shaped rib molding die to prepare T-shaped ribs includes the following steps: (1) The T-shaped reinforcement is divided into two L-shaped pieces, filler and flat piece according to the ply; (2) Flatten the L-shaped parts and cut the polyaryletherketone thermoplastic prepreg according to the layup information; (3) After laying out and aligning the cut multilayer thermoplastic prepreg in the order of layering, fix it to the rectangular block of the mold with tape; (4) Connect the side pressure block of the shaping mold to the rectangular block of the shaping mold with bolts and spring washers. Tighten the bolts gradually. The side pressure block of the shaping mold will gradually bend the prepreg blank of the L-shaped part from straight. During the pressing process, the prepreg blank of the L-shaped part can slide between layers. (5) Tighten the connecting bolts between the rectangular block of the shaping mold and the side pressure block of the shaping mold to compact the prepreg; (6) Place the upper pressure block of the shaping mold on top of the prepreg blank of the L-shaped part before shaping, and use bolts to connect the side pressure block of the shaping mold to the upper pressure block of the shaping mold. The bolts are equipped with spring washers, and the upper pressure block of the shaping mold can slide vertically up and down along the side pressure block of the shaping mold. (7) Use bolts to tighten the pressure block on the mold to the rectangular block of the mold; (8) Place the assembled mold in an oven and set the temperature to the resin melting temperature in the prepreg + 5℃ (320℃) for 30 minutes. (9) Demolding yields the L-shaped part after it has been shaped; (10) Repeat operations (2) to (9) to prepare another L-shaped part after finalization; (11) Place the two shaped L-shaped parts on the first curing mold rectangular block and the second curing mold rectangular block respectively, and tighten the first curing mold rectangular block and the second curing mold rectangular block with bolts; (12) Add prepreg filling material to the rounded corners; (13) Place the laid flat multilayer prepreg on the assembled mold and place the curing mold cover plate on top; (14) Use high-temperature resistant polyimide tape to wrap the T-shaped rib curing mold assembly into a whole; (15) Place the T-shaped rib curing mold assembly in a hot autoclave, and demold it after high temperature and high pressure molding to obtain the T-shaped rib.

[0037] The L-shaped part obtained by the pre-designed embodiment has good compaction effect, and the prepared thermoplastic composite T-shaped rib has good appearance quality, low porosity content, and good mechanical properties.

[0038] Comparative Example 1 A thermoplastic composite T-shaped rib forming mold is the same as in Example 1, and the method of using the thermoplastic composite T-shaped rib forming mold is basically the same as in Example 1. The difference is in step (8). Step (8) of Comparative Example 1 is as follows: the assembled shaping mold is placed in an oven, the temperature is set to the resin melting temperature in the prepreg -15℃ (300℃), and the shaping is carried out for 60 minutes. Other operations are the same as in Example 1.

[0039] The L-shaped part obtained by Comparative Example 1 had poor compaction effect, and the multiple layers of prepreg did not stick together, thus failing to complete the shaping.

[0040] Comparative Example 2 A thermoplastic composite T-shaped rib forming mold is the same as in Example 1, and the method of using the thermoplastic composite T-shaped rib forming mold is basically the same as in Example 1. The difference is in step (8). Step (8) of Comparative Example 2 is as follows: the assembled shaping mold is placed in an oven, the temperature is set to the melting temperature of the resin in the prepreg + 5℃ (320℃), and the shaping is carried out for 10 minutes. Other operations are the same as in Example 1.

[0041] The L-shaped part obtained by pre-forming in Comparative Example 2 had poor compaction effect, and the multiple layers of prepreg did not stick together, thus failing to complete the shaping process.

[0042] The L-shaped parts and T-shaped ribs prepared in Example 1, Comparative Example 1 and Comparative Example 2 were subjected to performance tests, and the test results are shown in Table 1.

[0043] Table 1: Performance test results of Example 1, Comparative Example 1 and Comparative Example 2

[0044] As can be seen from Table 1, the L-shaped part prepared in Example 1 of the present invention has a better shaping effect than the L-shaped parts prepared in Comparative Example 1 and Comparative Example 2. The thermoplastic composite T-shaped rib prepared in Example 1 of the present invention has a better appearance quality, lower porosity, and better mechanical properties than the T-shaped rib prepared in Comparative Example 1 and Comparative Example 2. Furthermore, the manufacturing cycle of the T-shaped rib prepared using the thermoplastic composite T-shaped rib molding die of the present invention is shorter.

[0045] In summary, the thermoplastic composite T-shaped rib forming mold and its usage method of the present invention solve the technical problems of long manufacturing cycle, low production efficiency, and poor quality and insufficient strength of the T-shaped ribs produced by using thermoplastic prepregs in the prior art.

[0046] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A thermoplastic composite T-shaped rib forming mold, characterized in that: Including L-shaped part shaping molds and T-shaped rib curing molds; The L-shaped part forming mold includes a forming mold side pressure block, a forming mold rectangular block is provided on one side of the forming mold side pressure block, and a forming mold upper pressure block is provided above the forming mold rectangular block. The forming mold upper pressure block is vertically slidably connected to the forming mold side pressure block.

2. The thermoplastic composite T-rib forming mold as described in claim 1, characterized in that: The T-shaped rib curing mold includes a first curing mold rectangular block and a second curing mold rectangular block, with a curing mold top cover plate provided above the first curing mold rectangular block.

3. The thermoplastic composite T-rib forming mold as described in claim 1, characterized in that: The upper end face of the rectangular block of the shaping mold is provided with a rounded corner on the side of the shaping mold pressure block. The radius of the rounded corner is the radius of the T-shaped rib rounded corner - 0.5mm to the radius of the T-shaped rib rounded corner.

4. The thermoplastic composite T-rib forming mold as described in claim 3, characterized in that: The radius of the rounded corner of the rectangular block is the radius of the T-shaped rib rounded corner - 0.3mm to the radius of the T-shaped rib rounded corner - 0.1mm.

5. The thermoplastic composite T-rib forming mold as described in claim 1, characterized in that: The side pressure block of the shaping mold has a step on one side near the rectangular block of the shaping mold. The corner of the step is provided with a rounded corner of the side pressure block. The radius of the rounded corner of the side pressure block is the radius of the rounded corner of the T-shaped rib plus the thickness of the L-shaped part.

6. The thermoplastic composite T-rib forming mold as described in claim 5, characterized in that: The length of the step along the width direction of the side pressure block of the shaping mold is the radius of the side pressure block rounded corner ~ radius of the side pressure block rounded corner + 10mm.

7. The thermoplastic composite T-rib forming mold as described in claim 6, characterized in that: The length of the step along the width direction of the side pressure block of the shaping mold is the radius of the side pressure block rounded corner + 3mm to the radius of the side pressure block rounded corner + 5mm.

8. The thermoplastic composite T-rib forming mold as described in claim 2, characterized in that: The first solidification mold rectangular block and the shaping mold rectangular block are the same rectangular block.

9. A method of using a thermoplastic composite T-shaped rib forming mold, implemented based on the thermoplastic composite T-shaped rib forming mold according to any one of claims 1-8, characterized in that, Includes the following steps: The T-shaped rib is divided into a filler, a flat plate, and two L-shaped pieces; L-shaped parts are manufactured using L-shaped part shaping molds; The two L-shaped parts prepared are filled using a T-shaped rib curing mold; After the filling process is completed, the flat plate is placed on the T-shaped rib curing mold and hot-pressed to obtain the T-shaped rib.

10. The method of using the thermoplastic composite T-shaped rib forming mold as described in claim 9, characterized in that: The process of preparing L-shaped parts using L-shaped part shaping molds includes: Connect the side pressure block of the shaping mold and the rectangular block of the shaping mold to bend the prepreg blank of the L-shaped part from straight; Place the upper pressure block of the shaping mold above the prepreg blank of the L-shaped part before shaping after bending, connect the side pressure block and the upper pressure block of the shaping mold, and adjust the distance between the upper pressure block and the rectangular block of the shaping mold to obtain the assembled shaping mold. The assembled mold is then shaped and demolded to obtain an L-shaped part.

11. The method of using the thermoplastic composite T-shaped rib forming mold as described in claim 10, characterized in that, The setting process includes setting temperature of -10℃ to +10℃ of resin melting temperature in prepreg, and setting time of 20min-60min.

12. The method of using the thermoplastic composite T-shaped rib forming mold as described in claim 9, characterized in that: Before preparing the L-shaped part using the L-shaped part shaping mold, the L-shaped part is laid flat and the thermoplastic prepreg is cut according to the layup information.

13. The method of using the thermoplastic composite T-shaped rib forming mold as described in claim 9, characterized in that: The process of filling the two L-shaped parts prepared by using a T-shaped rib curing mold includes: placing the two L-shaped parts prepared on the first curing mold rectangular block and the second curing mold rectangular block respectively, and filling the rounded corners of the L-shaped parts with prepreg.

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