Forming die, variable-diameter part winding forming device and variable-diameter part

By using a molding die to achieve one-piece winding molding of fiberglass neck flanges, the problems of complex manufacturing process and unstable finished product quality in the existing technology are solved, thereby improving production efficiency and finished product quality.

CN223671900UActive Publication Date: 2025-12-16LIANYUNGANG ZHONGFU LIANZHONG COMPOSITES GRP
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Patent Information

Application Number
CN202520090825.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-01-15
Publication Date
2025-12-16
Estimated Expiration
2035-01-15

AI Technical Summary

Technical Problem

The manufacturing process of FRP (fiberglass reinforced plastic) neck flanges in the existing technology is complex, has a long production cycle, and cannot guarantee the assembly effect of the flange and flange neck, making it difficult to guarantee the quality of the finished product.

Method used

The forming mold, including the mold spindle, the first stop cover, the winding mold body and the second stop cover, is used to realize the integral winding forming of variable diameter parts through the winding mechanism. The stability and accuracy of the forming process are ensured by the use of limiting bosses, guide parts and locking nuts.

Benefits of technology

It simplifies the manufacturing process, improves production efficiency, and ensures the finished product quality of variable diameter parts, especially the assembly effect and service life of FRP neck flanges.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the technical field of variable-diameter part manufacturing, and discloses a forming die, a variable-diameter part winding forming device and a variable-diameter part. The forming die comprises a die main shaft, a first blocking cover, a winding die body and a second blocking cover. The die main shaft can rotate relative to a winding mechanism of the variable-diameter part winding forming device. The first blocking cover and the winding mold body are connected with each other and are coaxially and detachably connected with the mold main shaft, and winding fibers of the winding mechanism can be wound on the outer side of the winding mold body to form a part neck structure. The second blocking cover is coaxially and detachably connected with the mold main shaft, the end, away from the first blocking cover, of the winding mold body and one part of the part neck structure can be inserted into the second blocking cover, and winding fibers can be arranged between the first blocking cover and the second blocking cover and can be wound on the outer side of one part of the part neck structure to form a part disc structure. The forming die can achieve integral winding forming of the variable-diameter part, the manufacturing process is simplified, the manufacturing efficiency is improved, and the finished product quality of the variable-diameter part is guaranteed.
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Description

TECHNICAL FIELD

[0001] The utility model relates to variable diameter part manufacturing technical field especially relates to a forming die, variable diameter part winding forming device and variable diameter part. BACKGROUND

[0002] Flange is the part used to connect pipe and pipe, commonly used in the connection of two pipe ends, also can be used on the import or export of equipment, used in the connection between equipment. Glass fiber reinforced plastic flange (also known as glass steel flange) has the advantages of high strength, corrosion resistance and long service life, and is widely used in many fields.

[0003] The neck flange is a kind of flange, which comprises a flange neck and a flange disc coaxially and fixedly connected, the cross-sectional area of the flange neck is smaller than that of the flange disc, so that the neck flange is in a variable diameter state in the axial direction.

[0004] At present, the glass steel neck flange needs to be respectively produced and manufactured when manufacturing, and then hand lay-up assembly forming is carried out. The above manufacturing process has the following problems: the production steps are complex, the production cycle is long, and the assembly effect of the flange disc and the flange neck cannot be guaranteed, and the quality of the finished product of the neck flange cannot be guaranteed.

[0005] Therefore, a forming die, a variable diameter part winding forming device and a variable diameter part are needed to solve the above problems. UTILITY MODEL CONTENTS

[0006] According to one aspect of the utility model, the purpose is to provide a forming die, which can realize the integrated winding forming of the variable diameter part, simplify the manufacturing process, improve the manufacturing efficiency and ensure the finished product quality of the variable diameter part.

[0007] In order to achieve this purpose, the utility model adopts the following technical scheme:

[0008] The forming die comprises:

[0009] The mold spindle can rotate relative to the winding mechanism of the variable diameter part winding forming device;

[0010] The first cover and the winding mold body are coaxially detachably connected with the mold spindle and connected with each other, and the winding fiber of the winding mechanism can be wound outside the winding mold body to form a part neck structure;

[0011] The second cover is coaxially detachably connected with the mold spindle, one end of the winding mold body away from the first cover and a part of the part neck structure can be inserted into the second cover, and the winding fiber can be wound between the first cover and the second cover and outside a part of the part neck structure to form a part disc structure.

[0012] As a preferred form of the forming die provided by the utility model, the first cover is provided with a limiting boss on the side facing the winding die body, the winding die body is provided with an installation channel in the axial direction, and the limiting boss can be inserted into the installation channel and abut against the inner wall of the installation channel.

[0013] As a preferred form of the forming die provided by the utility model, the edge of the side of the winding die body away from the first cover is provided with a guide part, and the guide part gradually approaches the central axis of the winding die body in the direction away from the first cover.

[0014] As a preferred form of the forming die provided by the utility model, the forming die further comprises a first locking nut and a second locking nut, the first locking nut and the second locking nut are respectively screwed on the die spindle, and the first cover and the winding die body are clamped between the first locking nut and the second locking nut, or the first cover, the winding die body and the second cover are clamped between the first locking nut and the second locking nut.

[0015] As a preferred form of the forming die provided by the utility model, the forming die further comprises a first reinforcing ring and a second reinforcing ring, the first reinforcing ring is sleeved on the die spindle and clamped between the first locking nut and the first cover;

[0016] the second reinforcing ring is sleeved on the die spindle and clamped between the second locking nut and the winding die body, or the second reinforcing ring is clamped between the second locking nut and the second cover.

[0017] As a preferred form of the forming die provided by the utility model, the outer side of the second cover is provided with an ear plate, the ear plate extends in the direction away from the central axis of the second cover, a connecting hole is formed in the ear plate, and the connecting hole is configured to be connected with a traction device.

[0018] As a preferred form of the forming die provided by the utility model, the first cover is provided with a plurality of first through holes, and the plurality of first through holes are configured to reduce the weight of the first cover.

[0019] The second cover is provided with a plurality of second through holes, and the plurality of second through holes are configured to reduce the weight of the second cover.

[0020] As a preferred form of the forming die provided by the utility model, the first cover is provided with a first reinforcing structure, and the second cover is provided with a second reinforcing structure.

[0021] According to another aspect of the utility model, aim at providing a kind of variable diameter part winding forming device, the variable diameter part winding forming device includes winding mechanism and the forming die as any of the above-mentioned scheme, the winding mechanism is set to the side portion of the mold spindle;

[0022] The winding mechanism can rotate around the circumference of the mold spindle to wind the winding fiber on the winding mold body;Or,

[0023] The mold spindle can rotate around its axis to allow the winding fiber to be wound on the winding mold body in the circumferential direction.

[0024] According to another aspect of the utility model, aim at providing a kind of variable diameter part, the variable diameter part is manufactured by the forming die as the above-mentioned scheme, and the variable diameter part includes coaxially integrally formed part neck structure and part disc structure, and the cross-sectional area of the part disc structure is greater than the cross-sectional area of the part neck structure.

[0025] The utility model has the advantages of:

[0026] The utility model provides a forming die including mold spindle, first baffle, winding mold body and second baffle. The mold spindle can rotate relative to the winding mechanism of variable diameter part winding forming device. The first baffle and the winding mold body are connected with each other, and are respectively coaxially detachably connected with the mold spindle. The winding fiber of the winding mechanism can be wound outside the winding mold body to form a part neck structure. The winding mold body can provide a basis for winding and forming the part neck structure. The first baffle can position one end of the part neck structure when the part neck structure is formed. The second baffle is coaxially detachably connected with the mold spindle. One end of the winding mold body away from the first baffle and a part of the part neck structure can be inserted into the second baffle. The winding fiber can be wound between the first baffle and the second baffle and outside a part of the part neck structure to form a part disc structure. That is, after the part neck structure is formed, the second baffle is installed on the mold spindle, and the winding fiber is continuously wound in the space between the first baffle and the second baffle to form a part disc structure. That is, the forming die can realize the integrated winding and forming of the variable diameter part, simplify the manufacturing process, improve the manufacturing efficiency, and ensure the quality of the finished variable diameter part. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the contents of the embodiments of the present application and these drawings without any creative effort.

[0028] Figure 1 is a partial structure schematic view of the forming die provided by the embodiments of the present application;

[0029] Figure 2 is a structure schematic view of the forming die provided by the embodiments of the present application;

[0030] Figure 3 is Figure 2 is a local enlarged view of the structure marked as A in the figure;

[0031] Figure 4 is Figure 2 is a local enlarged view of the structure marked as B in the figure;

[0032] Figure 5 is a structure schematic view of the first cover provided by the embodiments of the present application;

[0033] Figure 6 is a structure schematic view of the second cover provided by the embodiments of the present application.

[0034] In the figure:

[0035] 100, mold spindle;

[0036] 200, first cover; 210, limiting boss; 220, first through port; 230, first reinforcing structure; 231, first reinforcing rib; 232, first reinforcing ring;

[0037] 300, winding mold body; 310, mounting channel; 320, guide part;

[0038] 400, second cover; 410, ear plate; 411, connecting hole; 420, second through port; 430, second reinforcing structure; 431, second reinforcing rib; 432, second reinforcing ring;

[0039] 510, first locking nut; 520, second locking nut;

[0040] 610, first reinforcing ring; 620, second reinforcing ring. DETAILED DESCRIPTION

[0041] The technical solutions of the present application will be further described below by combining the drawings and through specific embodiments.

[0042] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0043] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0044] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0045] In the description of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0046] In the description of the present application, it should also be noted that, unless otherwise specified and limited, the terms "provided", "connected", "fixed" should be understood broadly, for example, can be fixedly connected, can also be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0047] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can include direct contact between the first and second features, or indirect contact between the first and second features through another feature therebetween. Moreover, the first feature "on", "above" and "on top of" the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "under", "below" and "underneath" the second feature includes the first feature directly below and obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0048] In the present application, the term "and / or" is only a description of the association relationship between the associated objects, which means that there can be three kinds of relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in the present application generally represents an "or" relationship between the front and rear associated objects.

[0049] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0050] The present embodiment provides a forming die and a variable-diameter part winding forming device. The variable-diameter part winding forming device comprises a winding mechanism and the forming die provided by the present embodiment. The winding mechanism is arranged at the side of the forming die. The winding mechanism can rotate around the circumference of the forming die to wind the winding fiber on the forming die. Alternatively, the forming die can rotate around its own axis to allow the winding fiber to be wound on the forming die in the circumferential direction. In the present embodiment, the winding fiber can be glass fiber in particular, and the variable-diameter part winding forming device can be used to manufacture a glass steel necked flange.

[0051] The present embodiment also provides a variable-diameter part which can be manufactured by the above-mentioned variable-diameter part winding forming device. The variable-diameter part comprises a part neck structure and a part disc structure which are coaxially integrally formed, and the cross-sectional area of the part disc structure is greater than that of the part neck structure. In the present embodiment, the variable-diameter part is a glass steel necked flange in particular, the part neck structure is a flange neck in particular, and the part disc structure is a flange disc in particular.

[0052] Figure 1 Part of the structure schematic diagram of the forming die provided by the present embodiment is shown; Figure 2 The structure schematic diagram of the forming die provided by the present embodiment is shown. Referring to Figure 1 andFigure 2 The forming mold comprises a mold spindle 100, a first cover 200, a winding mold body 300, and a second cover 400.

[0053] Specifically, the mold spindle 100 is capable of rotating relative to a winding mechanism. The first cover 200 and the winding mold body 300 are connected to each other and are coaxially detachably connected to the mold spindle 100. The winding fiber of the winding mechanism is capable of being wound outside the winding mold body 300 to form a part neck structure.

[0054] Further specifically, the winding mechanism is specifically arranged at the side of the mold spindle 100. The winding mechanism is capable of rotating around the circumference of the mold spindle 100 to wind the winding fiber on the winding mold body 300. Alternatively, the mold spindle 100 is capable of rotating around its own axis to enable the winding fiber to be wound circumferentially on the winding mold body 300.

[0055] Further specifically, the second cover 400 is coaxially detachably connected to the mold spindle 100, one end of the winding mold body 300 away from the first cover 200 and a part of the part neck structure are capable of being inserted into the second cover 400, and the winding fiber is capable of being wound between the first cover 200 and the second cover 400 and outside a part of the part neck structure to form a part disc structure.

[0056] More specifically, the forming mold further comprises a first locking nut 510 and a second locking nut 520. The first locking nut 510 and the second locking nut 520 are respectively screwed on the mold spindle 100. During the winding and forming process of the part neck structure, the first cover 200 and the winding mold body 300 are clamped between the first locking nut 510 and the second locking nut 520, as shown in Figure 1 During the winding and forming process of the part disc structure, the first cover 200, the winding mold body 300, and the second cover 400 are clamped between the first locking nut 510 and the second locking nut 520, as shown in Figure 2 .

[0057] More specifically, the forming die further comprises a first reinforcing ring 610 and a second reinforcing ring 620. The first reinforcing ring 610 is sleeved on the die spindle 100, and is clamped between the first locking nut 510 and the first cover 200, so as to improve the connection reliability of the first cover 200 and the die spindle 100 and the stability of the fixed connection therebetween. In the winding forming process of the part neck structure, the second reinforcing ring 620 is sleeved on the die spindle 100 and is clamped between the second locking nut 520 and the winding die body 300. In the winding forming process of the part disc structure, the second reinforcing ring 620 is clamped between the second locking nut 520 and the second cover 400. Through the second reinforcing ring 620, the connection reliability of the winding die body 300 and the die spindle 100 and the stability of the fixed connection therebetween can be ensured in the winding forming process of the part neck structure, and the connection reliability of the second cover 400 and the die spindle 100 and the stability of the fixed connection therebetween can be ensured in the winding forming process of the part disc structure.

[0058] Figure 3 A partial enlarged view of a structure marked as A is shown. Figure 2 Referring to Figure 3 The first cover 200 is provided with a limiting boss 210 on the side facing the winding die body 300, and the winding die body 300 is provided with a mounting channel 310 in the axial direction, and the limiting boss 210 is in a cylindrical structure or an annular structure and can be inserted into the mounting channel 310 and abut against the inner wall of the mounting channel 310. Through the limiting boss 210, the insertion reliability between the winding die body 300 and the first cover 200 can be realized.

[0059] Specifically, the abutting connection parts of the first cover 200 and the winding die body 300 are provided with water ripple structures, so as to improve the sealing effect of the contact parts of the first cover 200 and the winding die body 300.

[0060] Figure 4 A partial enlarged view of a structure marked as B is shown. Figure 2 Referring to Figure 1 and Figure 4 The edge of the winding die body 300 away from the first cover 200 is provided with a guide part 320, and the guide part 320 gradually approaches the central axis of the winding die body 300 in the direction away from the first cover 200. Through the guide part 320, guidance can be provided when the winding die body 300 is inserted into the second cover 400, and the assembly of the second cover 400 and the winding die body 300 is facilitated.

[0061] Figure 5 A structure schematic view of the first cover is shown. Referring toFigure 5 The first cover 200 is provided with a plurality of first through holes 220 configured to reduce the weight of the first cover 200. In the embodiment, the first through holes 220 are specifically four, which are arranged in a circular array and uniformly arranged on the first cover 200.

[0062] Specifically, continuing to refer to Figure 5 The first cover 200 is provided with a first reinforcing structure 230. In the embodiment, the first reinforcing structure 230 specifically includes a first reinforcing rib 231 and a first reinforcing ring 232. The first reinforcing rib 231 is a plurality of reinforcing ribs arranged along the radial direction of the first cover 200. The limiting boss 210 is specifically provided with four first reinforcing ribs 231, and each first reinforcing rib 231 is arranged along the radial direction of the limiting boss 210. The limiting boss 210 is provided with a first reinforcing ring 232 at the geometric center thereof, and the four first reinforcing ribs 231 are radially distributed around the first reinforcing ring 232. The first cover 200 is provided with a plurality of first reinforcing ribs 231 between the outer circumferential side of the limiting boss 210 and the outer edge of the first cover 200. Through the above arrangement, the structural strength can be enhanced, and the first cover 200 can be prevented from being deformed when the first cover 200 and the winding mold body 300 are assembled or disassembled.

[0063] Figure 6 The structure of the second cover is shown in the structural schematic view of the second cover provided by the embodiment of the utility model. Referring to Figure 6 The second cover 400 is provided with a plurality of second through holes 420 configured to reduce the weight of the second cover 400. In the embodiment, the second through holes 420 are specifically four, which are arranged in a circular array and uniformly arranged on the second cover 400.

[0064] Specifically, continuing to refer to Figure 6 The second cover 400 is provided with a second reinforcing structure 430. In the embodiment, the second reinforcing structure 430 specifically includes a second reinforcing rib 431 and a second reinforcing ring 432. The second reinforcing ring 432 is specifically arranged at the geometric center of the second cover 400, and the second reinforcing rib 431 is specifically four, which are radially arranged around the second reinforcing ring 432. Through the above arrangement, the structural strength can be enhanced, and the second cover 400 can be prevented from being deformed when the second cover 400 and the winding mold body 300 are assembled or disassembled.

[0065] Continuing to refer to Figure 2The outer side of the second cover 400 is provided with an ear plate 410 extending towards a direction away from the central axis of the second cover 400, and a connecting hole 411 is formed in the ear plate 410 and is configured to be connected with a traction device. Through the traction device, the second cover 400 can be conveniently assembled and disassembled on the mold spindle 100.

[0066] The use method of the forming mold provided by the embodiment is as follows:

[0067] In step a, the first cover 200 and the winding mold body 300 are installed on the mold spindle 100, and the first reinforcing ring 610 and the first locking nut 510 are sequentially installed on the side of the first cover 200 away from the winding mold body 300, and the second reinforcing ring 620 and the second locking nut 520 are sequentially installed on the side of the winding mold body 300 away from the first cover 200.

[0068] In step b, the assembled forming mold is hoisted and installed on a workshop production support.

[0069] In step c, the winding mechanism is used to wind glass fibers on the winding mold body 300 to form a part neck structure, and then the end face of the part neck structure is manually leveled. Then the second reinforcing ring 620 and the second locking nut 520 are removed, the second cover 400 is installed on the mold spindle 100, and the second reinforcing ring 620 and the second locking nut 520 are sequentially installed again.

[0070] In step d, the winding mechanism is used to form a part disc structure on the part neck structure.

[0071] In step e, after the above steps are completed, the second reinforcing ring 620 and the second locking nut 520 are removed, and then the second cover 400 is demolded by means of the traction device.

[0072] In step f, the first reinforcing ring 610, the first locking nut 510, the first cover 200 and the winding mold body 300 are removed, and the production of the variable-diameter part is completed.

[0073] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not a limitation on the embodiments of the utility model. For ordinary skilled persons in the art, various obvious changes, re-adjustments and replacements can be made without departing from the protection scope of the utility model. Here, it is unnecessary and impossible to exhaust all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A forming die, characterized by, The forming die comprises: a mold spindle (100) capable of rotating relative to a winding mechanism of a variable-diameter part winding forming device; a first cover (200) and a winding mold body (300) coaxially and detachably connected with the mold spindle (100) and connected with each other, and a winding fiber of the winding mechanism can be wound outside the winding mold body (300) to form a part neck structure; a second cover (400) coaxially and detachably connected with the mold spindle (100), and a part of the winding mold body (300) away from the first cover (200) and a part of the part neck structure can be inserted into the second cover (400), and the winding fiber can be wound between the first cover (200) and the second cover (400) and outside a part of the part neck structure to form a part disc structure.

2. The forming mold of claim 1, wherein The first cover (200) is provided with a limiting boss (210) on one side facing the winding mold body (300), the winding mold body (300) is provided with a mounting channel (310) in the axial direction, and the limiting boss (210) can be inserted into the mounting channel (310) and abut against the inner wall of the mounting channel (310).

3. The forming mold of claim 1, wherein An edge of the winding mold body (300) away from the first cover (200) is provided with a guide portion (320), and the guide portion (320) gradually approaches the central axis of the winding mold body (300) in a direction away from the first cover (200).

4. The forming mold of claim 1, wherein The forming die further comprises a first locking nut (510) and a second locking nut (520), the first locking nut (510) and the second locking nut (520) are respectively screwed on the mold spindle (100), and the first cover (200) and the winding mold body (300) are clamped between the first locking nut (510) and the second locking nut (520); or, the first cover (200), the winding mold body (300) and the second cover (400) are clamped between the first locking nut (510) and the second locking nut (520).

5. The forming mold of claim 4, wherein, The forming die further comprises a first reinforcing ring (610) and a second reinforcing ring (620), the first reinforcing ring (610) is sleeved on the mold spindle (100) and clamped between the first locking nut (510) and the first cover (200); The second reinforcing ring (620) is sleeved on the mold spindle (100) and clamped between the second locking nut (520) and the winding mold body (300); or, the second reinforcing ring (620) is clamped between the second locking nut (520) and the second cover (400).

6. The forming mold of claim 1, wherein An ear plate (410) is arranged on the outside of the second cover (400), the ear plate (410) extends away from the central axis of the second cover (400), a connecting hole (411) is formed in the ear plate (410), and the connecting hole (411) is configured to connect a traction device.

7. The forming mold of claim 1, wherein The first cover (200) is provided with a plurality of first through holes (220) configured to reduce the weight of the first cover (200); The second cover (400) is provided with a plurality of second through holes (420) configured to reduce the weight of the second cover (400).

8. The forming mold of claim 1, wherein, The first cover (200) is provided with a first reinforcing structure (230), and the second cover (400) is provided with a second reinforcing structure (430).

9. A variable diameter part winding forming apparatus characterized by, The variable-diameter part winding forming device comprises a winding mechanism and the forming mold according to any one of claims 1-8, and the winding mechanism is arranged on the side of the mold main shaft (100); The winding mechanism is capable of rotating around the circumference of the mold main shaft (100) to wind the winding fiber on the winding mold body (300); or, The mold main shaft (100) is capable of rotating around its own axis to enable the winding fiber to be wound on the winding mold body (300) in the circumferential direction.

10. A variable diameter component characterised in that, The variable-diameter part is manufactured by using the forming mold according to claim 9, and the variable-diameter part comprises a part neck structure and a part disc structure which are coaxially integrally formed, and the cross-sectional area of the part disc structure is greater than that of the part neck structure.