Composite material cylindrical support forming die

Abstract

The utility model discloses a composite material cylindrical support forming die in the technical field of dies, which comprises a mandrel, a plurality of inserts are mounted on the mandrel, a first limit flange and a second limit flange are sleeved at two ends of the mandrel, a first fastening flange is arranged on the mandrel and positioned on the outer side of the first limit flange, and a second fastening flange is arranged on the mandrel and positioned on the outer side of the second limit flange. A second fastening flange is arranged at the position, located on the outer side of the second limiting flange, of the mandrel, and a paving area is formed among the mandrel, the insert, the first limiting flange and the second limiting flange and used for paving prepreg to finally form the cylindrical support.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a forming mold. Background Art

[0002] Carbon fiber reinforced resin-based composite materials have the characteristics of high specific strength, high specific modulus, and strong designability, and are one of the hot spots in material research. Carbon fiber composite structural parts are gradually replacing metal structural parts, and have been widely used in industries such as the automotive industry, aerospace, shipbuilding, sports equipment, and weapon equipment in recent years. For complex structural parts, the application of composite materials is often limited by product quality. Phenomena such as bridging, wrinkles, pores, glue spraying, and glue enrichment seriously affect product quality, and the above phenomena are particularly serious in special-shaped structural parts. Therefore, how to design a composite molding mold to ensure that the surface finish, contour, thickness and other dimensional accuracy requirements of the molded product are met while ensuring smooth demolding is a topic that technicians in this field need to study. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a composite material cylindrical bracket forming mold, which facilitates the laying of the cylindrical bracket, ensures the beauty of the inner surface of the product, the qualified non-destructive testing results, the guaranteed product size requirements, and the easy demoulding.

[0004] The purpose of the utility model is achieved as follows: a composite material cylindrical bracket forming mold, including a core shaft, a plurality of inserts are installed on the core shaft, both ends of the core shaft are provided with a first limiting flange and a second limiting flange, a first fastening flange is provided on the core shaft on the outside of the first limiting flange, and a second fastening flange is provided on the core shaft on the outside of the second limiting flange, and a paving area is formed between the core shaft, the inserts, the first limiting flange and the second limiting flange for paving prepreg to finally form a cylindrical bracket.

[0005] As a further limitation of the utility model, the core shaft and the insert are correspondingly provided with a positioning hole and a mounting hole, a positioning pin is provided in the positioning hole, a locking screw is provided in the mounting hole, and the insert is installed on the core shaft through the positioning pin and the locking screw.

[0006] As a further limitation of the present invention, the insert is provided with an insert demoulding hole.

[0007] As a further limitation of the present invention, the first limiting flange and the second limiting flange are axially movably sleeved on the core shaft, and the first fastening flange and the second fastening flange are threadedly connected to both ends of the core shaft.

[0008] As a further limitation of the present invention, the end surfaces of the first limiting flange and the second limiting flange are provided with limiting flange threaded holes, and the first fastening flange and the second fastening flange are provided with fastening flange through holes that cooperate with the limiting flange threaded holes.

[0009] As a further limitation of the present invention, the first fastening flange and the second fastening flange are further provided with fastening flange threaded holes.

[0010] As a further limitation of the present invention, a plurality of notches are formed on the outer circumferences of the first fastening flange and the second fastening flange.

[0011] Compared with the prior art, the beneficial effects of the utility model are: the mold structure is simple, can ensure the beauty of the inner surface of the product, the non-destructive testing results are qualified, and the product size requirements are guaranteed. After trial use, the mold is easy to operate, the product demoulding is easy to operate, the product quality is effectively controlled, and the performance advantages of carbon fiber composite materials can be fully utilized. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0013] Figure 1 It is a schematic diagram of the structure of the utility model.

[0014] Figure 2 This is a cross-sectional view of the utility model.

[0015] Figure 3 This is a schematic diagram of the first limiting flange structure in the utility model.

[0016] Figure 4 This is a schematic diagram of the first fastening flange structure in the utility model.

[0017] Among them, 100 is the core shaft, 200 is the insert, 201 is the positioning hole, 202 is the mounting hole, 203 is the positioning pin, 204 is the locking screw, 205 is the insert demoulding hole, 300 is the first limiting flange, 301 is the limiting flange threaded hole, 400 is the second limiting flange, 500 is the first fastening flange, 501 is the fastening flange through hole, 502 is the fastening flange threaded hole, 503 is the notch, and 600 is the second fastening flange. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] like Figure 1-4 A composite cylindrical bracket forming mold shown in the figure includes a core shaft 100, on which a plurality of inserts 200 are installed, and both ends of the core shaft 100 are sleeved with a first limiting flange 300 and a second limiting flange 400, and the core shaft 100 is provided with a first fastening flange 500 located on the outer side of the first limiting flange 300, and the core shaft 100 is provided with a second fastening flange 600 located on the outer side of the second limiting flange 400, and a paving area is formed between the core shaft 100, the inserts 200, the first limiting flange 300, and the second limiting flange 400 for paving prepreg to finally form a cylindrical bracket.

[0020] Specifically, there are two groups of inserts 200, which are distributed axially, with three inserts in each group. The three inserts 200 are evenly distributed on the outer periphery of the core shaft 100. The first limiting flange 300 and the second limiting flange 400 are movably mounted on the core shaft 100, and the first fastening flange 500 and the second fastening flange 600 are fixedly mounted on the core shaft 100.

[0021] When in use, install the insert 200, the first limiting flange 300, the second limiting flange 400, the first fastening flange 500 and the second fastening flange 600 in place, then lay the prepreg in the paving area, cure it after paving, and finally demold it, remove the insert 200, the first limiting flange 300, the second limiting flange 400, the first fastening flange 500 and the second fastening flange 600 respectively, and finally remove the cylindrical bracket.

[0022] Furthermore, a positioning hole 201 and a mounting hole 202 are correspondingly opened on the core shaft 100 and the insert 200 . A positioning pin 203 is provided in the positioning hole 201 , and a locking screw 204 is provided in the mounting hole 202 . The insert 200 is installed on the core shaft 100 via the positioning pin 203 and the locking screw 204 .

[0023] Specifically, each insert 200 is provided with two pairs of positioning holes 201 and mounting holes 202 . In this embodiment, the positioning holes 201 are located inside the mounting holes 202 .

[0024] During installation, the insert 200 is first mounted on the mandrel 100 through the positioning hole 201 , and then the insert 200 is fixed by the locking screw 204 ; during removal, the locking screw 204 is first removed, and then the insert 200 is removed.

[0025] Furthermore, the insert 200 is provided with an insert demoulding hole 205 .

[0026] Specifically, each insert 200 is equipped with four insert demoulding holes 205. When removing, the demoulding screw is screwed into the insert demoulding hole 205, and the demoulding screw is rotated so that the demoulding screw is against the core shaft 100, thereby completing the separation of the insert 200 and the core shaft 100.

[0027] Furthermore, the first limiting flange 300 and the second limiting flange 400 are axially movably sleeved on the core shaft 100 , and the first fastening flange 500 and the second fastening flange 600 are threadedly connected to both ends of the core shaft 100 .

[0028] During installation, first put the first limiting flange 300 and the second limiting flange 400 onto the core shaft 100, then screw the first fastening flange 500 and the second fastening flange 600 into the core shaft 100, and after adjusting the positions of the first fastening flange 500 and the second fastening flange 600, make the first limiting flange 300 and the second limiting flange 400 fit tightly against the first fastening flange 500 and the second fastening flange 600, thereby completing the assembly.

[0029] Furthermore, the end surfaces of the first limiting flange 300 and the second limiting flange 400 are provided with limiting flange threaded holes 301 , and the first fastening flange 500 and the second fastening flange 600 are provided with fastening flange through holes 501 matching with the limiting flange threaded holes 301 .

[0030] Specifically, the limiting flange threaded holes 301 and the fastening flange through holes 501 are evenly distributed along the circumference of the end surface.

[0031] When fixing, after the first fastening flange 500 and the second fastening flange 600 are rotated to the appropriate position, the first limiting flange 300 and the second limiting flange 400 are rotated so that the limiting flange threaded hole 301 and the fastening flange through hole 501 are coaxially aligned, and the fixing screws are screwed in to complete the fixation of the two.

[0032] When demolding, first unscrew the fixing screws, rotate the first fastening flange 500 and the second fastening flange 600, separate the first fastening flange 500 and the second fastening flange 600 from the first limiting flange 300 and the second limiting flange 400, then screw in the fixing screws, rotate the fixing screws, and complete the demolding of the first limiting flange 300 and the second limiting flange 400.

[0033] Furthermore, the first fastening flange 500 and the second fastening flange 600 are provided with fastening flange threaded holes 502. The fastening flange threaded holes 502 are evenly distributed along the circumference of the end surface.

[0034] During demoulding, after the first limiting flange 300 and the second limiting flange 400 are demoulded, the first fastening flange 500 and the second fastening flange 600 are put on the core shaft 100, and screws are screwed into the threaded holes 502 of the fastening flanges. The screws can push the cylindrical bracket out of the core shaft 100, thereby completing the demoulding of the cylindrical bracket.

[0035] Furthermore, a plurality of notches 503 are formed on the outer circumferences of the first fastening flange 500 and the second fastening flange 600 .

[0036] The design of the notch 503 facilitates the rotation of the first fastening flange 500 and the second fastening flange 600 .

[0037] The above embodiments are only used to help understand the method and core idea of ​​the utility model. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made to the utility model without departing from the principle of the utility model, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A composite cylindrical bracket forming die, comprising a mandrel, characterized in that: A plurality of inserts (200) are mounted on the core shaft (100); a first limiting flange (300) and a second limiting flange (400) are sleeved at both ends of the core shaft (100); a first fastening flange (500) is provided on the core shaft (100) on the outside of the first limiting flange (300); a second fastening flange (600) is provided on the core shaft (100) on the outside of the second limiting flange (400); a paving area is formed between the core shaft (100), the inserts (200), the first limiting flange (300) and the second limiting flange (400) for paving prepreg to finally form a cylindrical bracket.

2. A composite material cylindrical bracket forming mold according to claim 1, characterized in that: The mandrel (100) and the insert (200) are provided with a positioning hole (201) and a mounting hole (202) respectively; a positioning pin (203) is provided in the positioning hole (201); a locking screw (204) is provided in the mounting hole (202); and the insert (200) is mounted on the mandrel (100) via the positioning pin (203) and the locking screw (204).

3. A composite material cylindrical bracket forming mold according to claim 1 or 2, characterized in that: The insert (200) is provided with an insert demoulding hole (205).

4. A composite material cylindrical bracket forming mold according to claim 1 or 2, characterized in that: The first limiting flange (300) and the second limiting flange (400) are axially movably sleeved on the core shaft (100), and the first fastening flange (500) and the second fastening flange (600) are threadedly connected to both ends of the core shaft (100).

5. A composite material cylindrical bracket forming mold according to claim 1 or 2, characterized in that: The first limiting flange (300) and the second limiting flange (400) are provided with limiting flange threaded holes (301) on their end surfaces, and the first fastening flange (500) and the second fastening flange (600) are provided with fastening flange through holes (501) that match the limiting flange threaded holes (301).

6. A composite material cylindrical bracket forming mold according to claim 1 or 2, characterized in that: The first fastening flange (500) and the second fastening flange (600) are also provided with fastening flange threaded holes (502).

7. A composite material cylindrical bracket forming mold according to claim 1 or 2, characterized in that: A plurality of notches (503) are provided on the outer circumferences of the first fastening flange (500) and the second fastening flange (600).

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