Forming die and manufacturing method for rotary body composite supporting disc with U-shaped section

Abstract

The invention discloses a forming die of a revolving body composite supporting disc with a U-shaped section and a manufacturing method of the forming die, the forming die comprises a bottom plate and a side plate blocking female die which are matched with each other, the side plate blocking female die is placed in an annular counter bore of the bottom plate, a plurality of side plate blocking female dies are assembled into an annular side plate female die, and the annular side plate female die is used for forming the revolving body composite supporting disc with the U-shaped section. A protruding part integrated with the bottom plate is arranged in the middle of the upper end face of the bottom plate, an inner ring limiting block is assembled at the top end of the protruding part, an outer ring limiting ring is arranged above the side plate blocking female die, and an outer ring blocking male die, a middle ring male die and an inner ring blocking male die which are matched with one another are arranged between the outer ring limiting ring and the inner ring limiting block from outside to inside at a time. Containing spaces for the composite supporting disc are formed between the side plate blocking female die below the outer ring limiting ring and the outer ring blocking male die, between the outer ring blocking male die, the middle ring male die and the inner ring blocking male die and the bottom plate and between the inner ring blocking male die below the inner ring limiting block and the protruding part. And a top plate covers the upper ends of the outer ring limiting ring, the outer ring partitioning male die, the middle ring male die, the inner ring partitioning male die and the inner ring limiting block.

Description

Technical Field

[0001] The invention belongs to the technical field of composite material forming, and relates to a forming die for a composite material support disk of a rotating body with a U-shaped cross section and a manufacturing method thereof. Background Art

[0002] Composite support plates are used in a variety of industries and applications, including aerospace, automotive, medical devices, construction, etc. Composite materials are usually made of two or more materials with different properties to achieve better performance than a single material, such as higher strength-to-weight ratio, corrosion resistance and design flexibility.

[0003] The technical disadvantages of the technical solutions of the prior art are as follows:

[0004] 1. The solution in the prior art is a single-sided mold, one side of which is a vacuum bag molding surface, the appearance quality is poor, and the outer surface needs to be machined;

[0005] 2. Machining will damage carbon fiber, causing the mechanical properties of parts to decline;

[0006] 3. The processing method of the prior art requires hot autoclave curing and molding, which is relatively costly. Summary of the invention

[0007] In view of this, an object of the present invention is to provide a forming mold for a composite support disk of a rotating body with a U-shaped cross section and a manufacturing method thereof.

[0008] In order to achieve the above object, the present invention provides the following technical solutions:

[0009] A U-shaped cross-section rotating body composite support plate forming mold, comprising a bottom plate and a side plate segmented female mold that cooperate with each other, the bottom plate is provided with an annular countersunk hole on the upper end surface near its edge, the side plate segmented female mold is placed in the annular countersunk hole of the bottom plate, a plurality of side plate segmented female molds are assembled into an annular side plate female mold, a raised portion integrated with the bottom plate is provided in the middle of the upper end surface of the bottom plate, an inner ring limit block is assembled at the top of the raised portion, an outer ring limit ring is provided above the side plate segmented female mold, and the outer ring limit ring Between the inner ring limit block from outside to inside are the outer ring block positive mold, the middle ring positive mold and the inner ring block positive mold that cooperate with each other; between the side plate block female mold and the outer ring block positive mold below the outer ring limit ring, between the outer ring block positive mold, the middle ring positive mold and the inner ring block positive mold and the bottom plate, and between the inner ring block positive mold and the raised part below the inner ring limit block are the accommodating space for the composite support plate; the upper ends of the outer ring limit ring, the outer ring block positive mold, the middle ring positive mold, the inner ring block positive mold and the inner ring limit block are covered with a top plate.

[0010] Furthermore, the middle circle positive mold is placed in the cavity surrounded by the outer circle block positive mold and the inner circle block positive mold. The cross-section of the middle circle positive mold is a T-shaped structure with the big end facing upward, and the corresponding inner ring wall of the outer circle block positive mold and the outer ring wall of the inner circle block positive mold are inclined surfaces corresponding to the outer ring wall and inner ring wall of the middle circle positive mold.

[0011] Furthermore, a recessed groove corresponding to the middle circle positive mold is provided at a position on the lower end surface of the top plate corresponding to the middle circle positive mold, and the top plate and the middle circle positive mold are fixedly connected.

[0012] Furthermore, a demoulding hole for demoulding is also provided at the center of the top plate.

[0013] Furthermore, a plurality of hanging screws are evenly fixed on the sides of the bottom plate.

[0014] A method for manufacturing a composite support plate of a rotating body with a U-shaped cross section comprises the following steps:

[0015] S1: Assemble the side panel block female mold and the bottom panel into a female mold; lay the carbon fiber prepreg or carbon fiber fabric in the female mold;

[0016] S2: Assemble the inner and outer ring male molds into blocks and place them into the inner cavity of the female mold, and tighten the top plate and the bottom plate;

[0017] S3: Hoist the mold, put the entire mold into the oven to heat, continue to tighten the top plate and bottom plate, put it into the oven for curing, and then take it out of the oven to cool to room temperature.

[0018] S4: demoulding;

[0019] S5: Enter the machining process to process the connection holes and weight-reducing holes to complete the molding of the composite support plate.

[0020] Furthermore, in step S2, assemble the outer ring limit ring and the inner ring limit block, assemble the outer ring block positive mold and the inner ring block positive mold, assemble the middle ring positive mold into the top plate groove, use the middle ring positive mold and the top plate connecting nails to fix the two, install the middle ring positive mold into the mold cavity between the outer ring block positive mold and the inner ring block positive mold, install the top plate and bottom plate connecting nails, and tighten them.

[0021] Furthermore, in step S3, the oven heating temperature is 90-180°C.

[0022] Furthermore, the curing time in step S3 is 5 to 12 hours.

[0023] Furthermore, in step S4, bolts are installed into the demoulding holes to push out the middle ring positive mold; the outer ring block positive mold and the inner ring block positive mold are removed; the outer ring limit ring, the inner ring limit block, and the side plate block negative mold are removed to remove the product.

[0024] The beneficial effects of the present invention are:

[0025] 1. The invention adopts yin and yang membranes, and the inner and outer surfaces of the processed parts do not need to be machined;

[0026] 2. The processing method created by the present invention does not damage the carbon fiber on the surface of the parts, so that its mechanical properties remain unchanged;

[0027] 3. The invention adopts bolt tightening and pressurizing, and oven heating and curing molding, and the comprehensive cost is lower than that of hot pressure tank molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0029] Figure 1 A composite support plate according to an embodiment of the present invention;

[0030] Figure 2 This is a cross section 1 of a composite support plate forming mold according to an embodiment of the present invention;

[0031] Figure 3 This is the second cross section of the composite support plate forming mold according to an embodiment of the present invention;

[0032] Figure 4 This is cross section three of the composite support plate forming mold according to an embodiment of the present invention.

[0033] Description of reference numerals:

[0034] 1. Inner ring; 2. Outer ring; 21. Adapter hole; 3. Plate body; 31. Weight reduction hole; 4. Top plate tension bolt; 5. Top plate; 6. Outer ring limit ring; 7. Composite support plate; 8. Side plate positioning bolt; 9. Bottom plate; 10. Lifting screw; 11. Side plate block female mold; 12. Outer ring block male mold; 13. Middle ring male mold; 14. Inner ring block male mold; 15. Inner ring limit block; 16. Middle core mold positioning block connecting nail; 17. Middle ring male mold and top plate connecting nail; 18. Top plate and bottom plate connecting nail; 19. Demolding hole. DETAILED DESCRIPTION

[0035] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0038] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0039] As shown in the figure, a composite support plate of a rotating body with a U-shaped cross section includes a coaxial inner ring 1 and an outer ring 2, which are connected by a plate body 3, the height of the inner ring 1 is higher than the height of the outer ring 2, the lower edge of the inner ring 1 is integrally connected to the inner edge of the plate body 3, and the lower edge of the outer ring 2 is integrally connected to the outer edge of the plate body 3. The plate body 3 is provided with a plurality of evenly distributed weight-reducing holes 31, and the ring wall of the outer ring is provided with a transfer hole 21 as needed.

[0040] A U-shaped cross-section rotating composite support plate forming mold includes a bottom plate 9 and a side plate segmented female mold 11 that cooperate with each other. The bottom plate 9 is provided with an annular countersunk hole on the upper end surface near its edge, and the annular countersunk hole cooperates with the side plate segmented female mold 11. The lower end of the side plate segmented female mold 11 is provided with an arc-shaped boss that cooperates with the annular countersunk hole of the bottom plate 9. The arc-shaped boss of the side plate segmented female mold 11 is placed in the annular countersunk hole of the bottom plate 9, and multiple side plate segmented female molds 11 are assembled into an annular side plate female mold. The side plate segmented female mold 11 is fixed to the bottom plate 9 by the side plate positioning bolts 8.

[0041] A raised portion integrated with the bottom plate 9 is provided in the middle of the upper end surface of the bottom plate 9. The raised portion is the supporting portion of the inner ring 1. The top of the raised portion is equipped with an inner ring stopper 15. A countersunk hole 1 is provided on the upper end surface of the raised portion. A boss 1 matching the countersunk hole is provided on the corresponding lower end surface of the inner ring stopper 15. The boss 1 of the inner ring stopper 15 is placed in the countersunk hole 1 of the raised portion and then fixed with the middle core mold positioning block connecting nail 16. The lower end edge of the inner ring stopper 15 extends to the outside of the boss portion.

[0042] Above the side plate block female mold 11 is the outer ring limiting ring 6, and between the outer ring limiting ring 6 and the inner ring limiting block 15 from the outside to the inside are the outer ring limiting positive mold 12, the middle ring positive mold 13 and the inner ring limiting positive mold 14 that cooperate with each other. Below the outer ring limiting ring 6, between the side plate block female mold 11 and the outer ring limiting positive mold 12, between the outer ring limiting positive mold 12, the middle ring positive mold 13 and the inner ring limiting positive mold 14 and the bottom plate 9, and between the inner ring limiting positive mold 14 and the raised portion below the inner ring limiting block are the accommodating space for the composite support plate 7.

[0043] An annular step 1 is provided at the upper edge of the inner ring of the outer ring stop ring 6, and an annular boss 1 that matches the annular step is provided at the upper edge of the corresponding outer ring segmented male mold 12 near the outer ring stop ring 6, and the annular boss 1 is placed inside the annular step 1. An annular step 2 is provided at the outer edge of the upper end surface of the inner ring stop block, and an annular boss 2 that matches the annular step 2 is provided at the outer edge of the corresponding inner ring segmented male mold 14 near the outer edge of the inner ring stop block, and the annular boss 2 is placed inside the annular step 2.

[0044] The middle circle positive mold 13 is placed in the cavity surrounded by the outer circle block positive mold 12 and the inner circle block positive mold 14. The cross section of the middle circle positive mold 13 is a T-shaped structure with the big end facing upward. The corresponding inner ring wall of the outer ring block positive mold 12 and the outer ring wall of the inner ring block positive mold 14 are inclined surfaces corresponding to the outer ring wall and inner ring wall of the middle circle positive mold 13.

[0045] The upper ends of the outer ring limit ring 6, the outer ring block male mold 12, the middle ring male mold 13, the inner ring block male mold 14, and the inner ring limit block 15 are covered with a top plate 5. The top plate 5 is fixed to the parts below by the top plate tightening bolts 4.

[0046] The upper end faces of the outer ring limit ring 6, the outer ring segmented male mold 12, and the inner ring segmented male mold 14 are flush, and the upper end faces of the middle ring male mold 13 and the inner ring limit block 15 are flush. A sink corresponding to the middle ring male mold 13 is provided at the position corresponding to the lower end face of the top plate 5 and the middle ring male mold 13. The top plate 5 and the middle ring male mold 13 are fixedly connected by the middle ring male mold and the top plate connecting nail 17. The middle part of the top plate 5 is provided with a top plate and bottom plate connecting nail 18, which passes through the inner ring limit block 15 and extends into the bottom plate 9 to fix the three.

[0047] A demoulding hole 19 for demoulding is also provided at the center of the top plate 5 .

[0048] A number of hanging screws 10 are evenly fixed to the sides of the bottom plate 9 .

[0049] A method for manufacturing a composite support plate of a rotating body with a U-shaped cross section comprises the following steps:

[0050] S1: Assemble the side panel block female mold 11 and the bottom plate 9 into a female mold; lay the carbon fiber prepreg or carbon fiber fabric in the female mold;

[0051] S2: Assemble the outer ring limit ring 6 and the inner ring limit block 15; assemble the outer ring block male mold 12 and the inner ring block male mold 14, assemble the middle ring male mold 13 into the sink groove of the top plate 5, and use the middle ring male mold and the top plate connecting nail 17 to fix the two; install the middle ring male mold 13 into the mold cavity between the outer ring block male mold 12 and the inner ring block male mold 14, install the top plate and the bottom plate connecting nail 18, and tighten;

[0052] S3: Use a crane to lift the screws 10, put the entire mold into an oven and heat it to 90-180°C, continue to tighten the connecting nails of the top plate 5 and the bottom plate 9, put it into the oven for curing for 5-12 hours, and then take it out of the oven and cool it to room temperature.

[0053] S4: demoulding, use bolts to install into demoulding holes 19 to push out the middle ring male mold 13; remove the outer ring block male mold 12 and the inner ring block male mold 14; remove the outer ring limit ring 6, the inner ring limit block 15, and the side plate block female mold 11 to remove the product;

[0054] S5: Entering into the machining process, processing the connection holes 21 and the weight-reducing holes 31 , and completing the molding of the composite support plate 7 .

[0055] Compared with the original autoclave forming method, the invention uses the net size of the composite material heat-sealed mold for forming, does not require secondary machining of the outer surface, reduces the manufacturing cost, and improves the mechanical properties of the product.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A U-shaped cross-section rotating composite support plate forming mold, characterized in that: The invention comprises a bottom plate (9) and a side plate segmented female mold (11) which cooperate with each other. The bottom plate (9) is provided with an annular countersunk hole on the upper end surface near the edge thereof. The side plate segmented female mold (11) is placed in the annular countersunk hole of the bottom plate (9). A plurality of side plate segmented female molds (11) are assembled into an annular side plate female mold. A raised portion which is integrated with the bottom plate (9) is provided in the middle of the upper end surface of the bottom plate (9). An inner ring limit block (15) is installed at the top of the raised portion. An outer ring limit ring (6) is provided above the side plate segmented female mold (11). The outer ring limit ring (6) and the inner ring limit block (15) are mutually cooperated outer rings from the outside to the inside. The space between the segmented male mold (12), the middle ring male mold (13) and the inner ring segmented male mold (14), the space between the side plate segmented female mold (11) below the outer ring limiting ring (6) and the outer ring segmented male mold (12), the space between the outer ring segmented male mold (12), the middle ring male mold (13) and the inner ring segmented male mold (14) and the bottom plate (9), and the space between the inner ring segmented male mold (14) and the raised portion below the inner ring limiting block are the accommodation spaces for the composite support plate (7); the upper ends of the outer ring limiting ring (6), the outer ring segmented male mold (12), the middle ring male mold (13), the inner ring segmented male mold (14) and the inner ring limiting block (15) are covered with a top plate (5).

2. The U-shaped cross-section rotating composite support plate forming mold according to claim 1, characterized in that: The middle circle male mold (13) is placed in a cavity surrounded by the outer circle segmented male mold (12) and the inner circle segmented male mold (14). The cross section of the middle circle male mold (13) is a T-shaped structure with the large end facing upwards. The corresponding inner ring wall of the outer circle segmented male mold (12) and the outer ring wall of the inner circle segmented male mold (14) are inclined surfaces corresponding to the outer ring wall and the inner ring wall of the middle circle male mold (13).

3. The U-shaped cross-section rotating composite support plate forming mold according to claim 1, characterized in that: A recessed groove corresponding to the middle circle male mold (13) is arranged at a position on the lower end surface of the top plate (5) corresponding to the middle circle male mold (13), and the top plate (5) and the middle circle male mold (13) are fixedly connected.

4. The U-shaped cross-section rotating composite support plate forming mold according to claim 1, characterized in that: A demoulding hole (19) for demoulding is also provided at the center of the top plate (5).

5. The U-shaped cross-section rotating composite support plate forming mold according to claim 1, characterized in that: A plurality of hanging screws (10) are evenly fixed on the side of the bottom plate (9).

6. A method for manufacturing a composite support plate of a rotating body with a U-shaped cross section according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1: Assembling the side panel segmented female mold (11) and the bottom plate (9) into a female mold; laying carbon fiber prepreg or carbon fiber fabric in the female mold; S2: Assemble the inner and outer ring male mold blocks and place them into the inner cavity of the female mold, and tighten the top plate (5) and the bottom plate (9); S3: hoist the mold, put the whole mold into the oven for heating, continue to tighten the top plate (5) and the bottom plate (9), put it into the oven for curing, and then take it out of the oven to cool to room temperature. S4: demoulding; S5: Entering the machining process, processing the connection holes and the weight-reducing holes, and completing the molding of the composite support plate (7).

7. The method for manufacturing a composite support plate of a rotating body with a U-shaped cross section according to claim 6, characterized in that: In step S2, assemble the outer ring limit ring (6) and the inner ring limit block (15), assemble the outer ring block male mold (12) and the inner ring block male mold (14), assemble the middle ring male mold (13) into the top plate (5) sink groove, use the middle ring male mold and the top plate connecting nails (17) to fix the two, install the middle ring male mold (13) into the mold cavity between the outer ring block male mold (12) and the inner ring block male mold (14), install the top plate and bottom plate connecting nails (18), and tighten them.

8. The method for manufacturing a composite support plate of a rotating body with a U-shaped cross section according to claim 6, characterized in that: In step S3, the oven heating temperature is 90-180°C.

9. The method for manufacturing a composite support plate of a rotating body with a U-shaped cross section according to claim 6, characterized in that: The curing time in step S3 is 5 to 12 hours.

10. The method for manufacturing a composite support plate of a rotating body with a U-shaped cross section according to claim 6, characterized in that: In step S4, bolts are installed into the demoulding holes (19) to push out the middle ring male mold (13); the outer ring block male mold (12) and the inner ring block male mold (14) are removed; the outer ring limit ring (6), the inner ring limit block (15), and the side plate block female mold (11) are removed to remove the product.

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