Cylindrical carbon fiber product molding apparatus

Abstract

The application provides a cylindrical carbon fiber product forming equipment, a slurry pool is arranged at the bottom of a rack, a forming die is arranged above the slurry pool, the forming die comprises a lower die lifting driving mechanism, a lower die connecting frame, a lower die, an upper die lifting driving mechanism, an upper die connecting frame and an upper die, the lower die comprises a lower die base and a plurality of lower die cores fixedly installed on the lower die base, a first air chamber is arranged in the lower die base, the lower die core is in a cylindrical shape, the upper end is closed, the lower end is open and communicates with the first air chamber, suction filtration holes are distributed on the cylindrical wall of the lower die core, the upper die comprises an upper die base and a plurality of upper die sleeves, the plurality of upper die sleeves are installed in the upper die base to form a plurality of through holes, when the lower die and the upper die are closed, the lower die core is inserted into the corresponding through hole to form a forming groove between the lower die core and the upper die sleeve, a second air chamber is arranged in the upper die base, and suction filtration holes communicating with the second air chamber are distributed on the side wall of the upper die sleeve. The application improves the production efficiency and product quality and is suitable for large-scale production of cylindrical carbon fiber products.

Description

TECHNICAL FIELD

[0001] The present application relates to a carbon fiber product forming device, in particular to a cylindrical carbon fiber product forming device. BACKGROUND

[0002] With the progress of science and technology and the development of industry, carbon fiber materials have been widely used in many fields such as aerospace, automobile manufacturing, medical equipment, etc. due to their excellent properties such as high strength, low density, corrosion resistance, and high temperature resistance.

[0003] However, the forming process of carbon fiber products is relatively complex, requiring high-precision molds and strict process control. Especially in the manufacture of cylindrical carbon fiber products, due to the special shape, higher requirements are put forward for the design and manufacture of the mold. The forming methods of carbon fiber parts usually include laminated curing forming, wet filtration forming, mold pressing forming, autoclave forming, etc. Among them, the wet filtration forming is to mix chopped carbon fibers, binders and dispersants into a uniform dispersion slurry, and then use the vacuum filtration forming method to obtain a blank, and then dry, cure and carbonize to obtain the product. Because vacuum filtration mainly relies on the application of vacuum to make carbon fibers accumulate gradually in the mold through pressure difference, for cylindrical carbon fiber parts, it is difficult to ensure complete uniformity of thickness in the circumferential direction of the cylindrical carbon fiber part through vacuum filtration, which affects the density and uniformity of the finished product. There is an urgent need for a forming device that can efficiently and stably produce cylindrical carbon fiber products. SUMMARY

[0004] In view of the problems existing in the prior art, the present application provides a cylindrical carbon fiber product forming device, which realizes efficient and stable production of carbon fiber products, improves production efficiency and improves product quality.

[0005] The technical scheme adopted by the present application is as follows: a cylindrical carbon fiber product forming device, comprising a rack and a slurry pool and a forming mold installed on the rack, the slurry pool is arranged at the bottom of the rack, the forming mold is arranged above the slurry pool, the forming mold comprises a lower mold lifting driving mechanism, a lower mold connecting frame, a lower mold, an upper mold lifting driving mechanism, an upper mold connecting frame and an upper mold, the lower mold lifting driving mechanism is installed at the top of the rack, the movable end of the lower mold lifting driving mechanism is fixedly connected with the lower mold connecting frame, the lower mold is fixedly installed at the bottom of the lower mold connecting frame, the upper mold lifting driving mechanism is installed at the top of the lower mold connecting frame, the movable end of the upper mold lifting driving mechanism is fixedly connected with the upper mold connecting frame, and the upper mold is fixedly installed at the bottom of the upper mold connecting frame and above the lower mold.

[0006] The lower mold comprises a lower mold base and a plurality of lower mold cores fixedly installed on the lower mold base, a first air chamber is arranged in the lower mold base, the first air chamber is connected with a gas source through a first connecting pipe, the gas source provides vacuum negative pressure and blowing positive pressure, the lower mold core is in a cylindrical shape with a closed upper end and an open lower end, the lower end is communicated with the first air chamber, and a plurality of suction filter holes are uniformly distributed on the cylindrical wall of the lower mold core;

[0007] The upper mold comprises an upper mold base and a plurality of upper mold sleeves fixedly installed in the upper mold base to form a plurality of through holes, when the lower mold and the upper mold are combined, the lower mold core is inserted into the corresponding through hole to form a forming groove between the lower mold core and the upper mold sleeve, a second air chamber is arranged in the upper mold base, the second air chamber is connected with the gas source through a second connecting pipe, the gas source provides vacuum negative pressure and blowing positive pressure, and a plurality of suction filter holes are uniformly distributed on the side wall of the upper mold sleeve and communicated with the second air chamber.

[0008] Further, the lower mold lifting driving mechanism comprises two first air cylinders vertically installed on the top of the rack, the piston rod end of the first air cylinder is fixedly connected with a lower mold connecting frame, a guide rod is connected to the lower mold connecting frame and slidably matched with a guide sleeve arranged on the rack.

[0009] Further, the upper mold lifting driving mechanism comprises a second air cylinder vertically installed on the top of the lower mold connecting frame, the piston rod end of the second air cylinder is fixedly connected with an upper mold connecting frame, a guide rod is connected to the upper mold connecting frame and slidably matched with a guide sleeve arranged on the lower mold connecting frame.

[0010] Further, a plurality of air vibrators are arranged on the upper mold base.

[0011] Further, the forming mold is located above the middle part of the slurry pool, the two ends of the slurry pool are in a circular arc shape, and a stirring mechanism is arranged at each end of the slurry pool, the stirring mechanism comprises a driving motor fixedly installed on the rack, a stirring shaft connected with the output end of the driving motor, and stirring paddles connected with the stirring shaft extending into the slurry pool.

[0012] Further, two grouting pipes are connected to the bottom of the slurry pool, the two grouting pipes are communicated with a connecting pipe arranged at the middle of the bottom of the slurry pool, and a plurality of grouting holes are distributed on the bottom of the connecting pipe.

[0013] Further, a material receiving mechanism is arranged on one side of the rack, the material receiving mechanism is butt jointed with the demolding station of the forming mold, used for receiving and transporting the formed products, the material receiving mechanism comprises a receiving table, a receiving plate slidably connected to the receiving table, and a third air cylinder installed on the receiving table and used for driving the receiving plate to move.

[0014] Further, a flattening mechanism is arranged on one side of the rack, which comprises a push frame, a scraper and a counterweight roller are arranged on one side of the push frame close to the forming die, the other side of the push frame is connected with a flattening driving device, the flattening driving device drives the scraper to reciprocate on the upper end surface of the upper die through the push frame.

[0015] Further, the flattening driving device comprises a connecting rod and a fourth cylinder, one end of the connecting rod is hinged to the push frame, the other end is hinged to the bottom of the rack, one end of the fourth cylinder is hinged to the rack, the other end is hinged to the middle part of the connecting rod, the fourth cylinder drives the connecting rod to rotate around the hinge point of the connecting rod and the rack, and then drives the push frame to move.

[0016] Further, a support rod is connected to the upper part of the connecting rod, which supports the push frame before the scraper contacts the upper die.

[0017] The beneficial effects of the present application are:

[0018] (1) The cylindrical carbon fiber product forming equipment of the present application constructs a cylindrical forming groove through the precise cooperation of the lower die core and the upper die sleeve, accurately controls the shape and size of the product, adopts an automatic lifting driving mechanism to realize rapid and efficient opening and closing and lifting operation of the mold, after the mold is closed, the mold is immersed in the slurry pool as a whole to perform vacuum filtration forming, after the forming is completed, the mold is lifted to above the slurry to effectively isolate the wet blank and the slurry, avoiding affecting the forming effect, at the same time, the upper mold maintains negative pressure and the lower mold is connected with positive pressure, the upper mold is easily lifted to take out the wet blank, and the air vibrator can realize convenient demolding, the whole process is smooth and efficient;

[0019] (2) During vacuum filtration forming, the present application synchronously applies negative pressure to the upper mold and the lower mold to realize balanced filtration on both sides of the forming groove, ensures that the carbon fiber slurry is subjected to uniform suction force in all directions in the forming groove, avoids slurry flow deviation caused by unilateral filtration, guarantees the uniform distribution of carbon fibers in the circumferential and axial directions, significantly improves the thickness uniformity and the consistency of the overall physical properties of the cylindrical carbon fiber product; in addition, the strong pressure difference driving force formed by bilateral negative pressure filtration promotes the close packing of carbon fibers and reduces internal porosity, greatly improving the density of the product;

[0020] (3) The present application sets a flattening mechanism to perform scraping treatment on the top of the upper mold during vacuum filtration forming and after forming, ensuring the flatness and smoothness of the surface of the cylindrical carbon fiber product, improving the appearance quality of the product; at the same time, simplifying the subsequent polishing and trimming steps, improving the production efficiency and reducing the production cost;

[0021] (4) The demolding station of the material receiving mechanism and the forming die is precisely connected, so that the formed cylindrical carbon fiber product can be quickly and accurately received and transported, the automation of the production process is realized, the manual intervention is reduced, and the production efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0023] Figure 2 It is a schematic diagram of the structure of another view of the present application.

[0024] Figure 3 It is a schematic diagram of the structure of the pulp pool of the present application.

[0025] Figure 4 It is a schematic diagram of the structure of the forming die of the present application.

[0026] Figure 5 It is a schematic diagram of the structure of the lower die of the present application.

[0027] Figure 6 It is a schematic diagram of the cross-sectional structure of the lower die of the present application.

[0028] Figure 7 It is a schematic diagram of the structure of the upper die of the present application.

[0029] Figure 8 It is a schematic diagram of the cross-sectional structure of the upper die of the present application.

[0030] Figure 9 It is a schematic diagram of the cross-sectional structure of the upper die and the lower die of the present application.

[0031] Figure 10 It is a schematic diagram of the structure of the material receiving mechanism of the present application.

[0032] Figure 11 It is a schematic diagram of the structure of the flattening mechanism of the present application.

[0033] Figure 12 It is a schematic diagram of the structure of another view of the flattening mechanism of the present application. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0035] As Figure 1 , Figure 2As shown, the cylindrical carbon fiber product forming device provided by the embodiment comprises a rack 100, a slurry pool 200, a forming die 300, a receiving mechanism 400 and a leveling mechanism 500 installed on the rack 100. The rack 100 serves as the support structure of the entire device, ensuring the stable installation and accurate alignment of each component. The slurry pool 200 is arranged at the bottom of the rack 100, facilitating the storage and supply of carbon fiber slurry. The forming die 300 is arranged above the slurry pool 200. The receiving mechanism 400 is arranged at the front side of the slurry pool 200, and the receiving mechanism 400 is accurately connected with the demolding station of the forming die 300, ensuring that the formed product can be quickly and accurately received and transported. The leveling mechanism 500 is arranged at the rear side of the slurry pool 200, and the top of the die is scraped during the forming process to ensure the flatness and smoothness of the product surface.

[0036] As shown, Figure 3 In the embodiment, the forming die 300 is located above the middle part of the slurry pool 200, and the two ends of the slurry pool 200 are in the shape of a circular arc. This design optimizes the flow performance of the slurry, reducing the accumulation and precipitation of the slurry in the corners. A stirring mechanism is arranged at each end of the slurry pool 200. The stirring mechanism comprises a driving motor fixedly installed on the rack 100, and the output end of the driving motor is connected with a stirring shaft. The stirring shaft extends into the slurry pool 200 and is connected with stirring paddles 201. The stirring mechanism drives the stirring shaft and the stirring paddles 201 to rotate through the driving motor, achieving uniform stirring of the slurry and ensuring the uniformity and flowability of the slurry, avoiding performance degradation caused by stratification or precipitation of the slurry. Two grouting pipes 202 are connected at the bottom of the slurry pool 200, and the two grouting pipes 202 are respectively communicated with a connecting pipe 203 arranged at the bottom of the slurry pool 200. The bottom of the connecting pipe 203 is provided with a plurality of slurry outlets. This design enables the slurry to be uniformly and stably injected into the slurry pool 200, ensuring uniform distribution of the slurry and avoiding local accumulation during grouting, thereby improving the quality consistency of the product.

[0037] As shown, Figure 4As shown, in this embodiment, the forming mold 300 includes a lower mold lifting driving mechanism 301, a lower mold connecting frame 302, a lower mold 303, an upper mold lifting driving mechanism 304, an upper mold connecting frame 305, and an upper mold 306. The lower mold lifting driving mechanism 301 is installed on the top of the rack 100, the movable end of the lower mold lifting driving mechanism 301 is fixedly connected with the lower mold connecting frame 302, the lower mold 303 is fixedly installed on the bottom of the lower mold connecting frame 302, the upper mold lifting driving mechanism 304 is installed on the top of the lower mold connecting frame 302, the movable end of the upper mold lifting driving mechanism 304 is fixedly connected with the upper mold connecting frame 305, and the upper mold 306 is fixedly installed on the bottom of the upper mold connecting frame 305 and above the lower mold 303. Specifically, the lower mold lifting driving mechanism 301 includes two first air cylinders which are vertically installed on the top of the rack 100, the piston rod end of each first air cylinder is fixedly connected with the lower mold connecting frame 302, a guide rod is connected with the lower mold connecting frame 302, and the guide rod is in sliding fit with a guide sleeve arranged on the rack 100; the upper mold lifting driving mechanism 304 includes a second air cylinder which is vertically installed on the top of the lower mold connecting frame 302, the piston rod end of the second air cylinder is fixedly connected with the upper mold connecting frame 305, a guide rod is connected with the upper mold connecting frame 305, and the guide rod is in sliding fit with a guide sleeve arranged on the lower mold connecting frame 302. Through the above design, the upper and lower molds can be stably lifted as a whole, and the upper and lower molds can be easily separated.

[0038] As shown in the figure, Figures 5-9 In this embodiment, the lower mold 303 includes a lower mold seat 3031 and a plurality of lower mold cores 3032, the lower mold cores 3032 are fixedly installed on the lower mold seat 3031, a first air chamber 3034 is arranged in the lower mold seat 3031, the first air chamber 3034 is connected with a gas source through a first connecting pipe 3033, the gas source provides vacuum negative pressure and blowing positive pressure, the lower mold core 3032 is in a cylindrical shape with a closed upper end and an open lower end, the open lower end is in communication with the first air chamber 3034, and a plurality of suction filter holes are uniformly distributed on the cylindrical wall of the lower mold core 3032; the upper mold 306 includes an upper mold seat 3061 and a plurality of upper mold sleeves 3064, the upper mold sleeves 3064 are fixedly installed in the upper mold seat 3061 to form a plurality of through holes 3062, when the lower mold 303 and the upper mold 306 are combined, the lower mold core 3032 is inserted into the corresponding through hole 3062 to form a forming groove between the lower mold core 3032 and the upper mold sleeve 3064, a second air chamber 3065 is arranged in the upper mold seat 3061, the second air chamber 3065 is connected with the gas source through a second connecting pipe 3063, the gas source provides vacuum negative pressure and blowing positive pressure, and a plurality of suction filter holes are uniformly distributed on the side wall of the upper mold sleeve 3064 and in communication with the second air chamber 3065; in order to facilitate demolding, a plurality of air vibrators are installed on the upper mold seat 3061. Through the above design, the cylindrical product can be formed by suction filtering on both sides at the same time, and subsequent demolding operation is facilitated.

[0039] As shown in the figure, Figure 1 , Figure 10As shown, in this embodiment, a material receiving mechanism 400 is arranged on one side of the rack 100, and is connected to the demolding station of the forming mold 300, for receiving and transferring the formed product. The material receiving mechanism 400 comprises a receiving table 401, and a receiving plate 402 is slidably connected to the receiving table 401. A third cylinder 403 is installed on the receiving table 401, for driving the receiving plate 402 to move.

[0040] As shown in FIG. 4, Figure 2 , Figure 11 , Figure 12 As shown, a flattening mechanism 500 is further arranged on one side of the rack 100, and comprises a pushing frame 503. A scraper 501 and a counterweight roller 502 are installed on one side of the pushing frame 503 close to the forming mold 300. A flattening driving device is connected to the other side of the pushing frame 503, and drives the scraper 501 to reciprocate on the upper end surface of the upper mold 306 through the pushing frame 503. The flattening driving device comprises a connecting rod 505 and a fourth cylinder 506. One end of the connecting rod 505 is hinged to the pushing frame 503, and the other end is hinged to the bottom of the rack 100. One end of the fourth cylinder 506 is hinged to the rack 100, and the other end is hinged to the middle of the connecting rod 505. The fourth cylinder 506 drives the connecting rod 505 to rotate around the hinged point of the rack 100, and then drives the pushing frame 503 to move. A supporting rod 504 is connected to the upper part of the connecting rod 505, and supports the pushing frame 503 before the scraper 501 contacts the upper mold 306. During the whole process of sinking into the slurry for filtration forming, the fourth cylinder 506 is retracted, and the connecting rod 505 is rotated around the hinged point, and then the scraper 501 is sent to the upper mold base 3061 through the pushing frame 503. The counterweight roller 502 provides counterweight. After the scraper 501 contacts the upper mold base 3061, the connecting rod 505 continues to rotate to the side of the forming mold, the pushing frame 503 is separated from the supporting rod 504, and the flattening operation is completed. After the forming is completed, the fourth cylinder 506 is elongated, and then drives the flattening mechanism 500 to move out from above the slurry pool (as shown in FIG. 6). Figure 2

[0041] The above is only an example and description of the structure of the present application. Those skilled in the art can make various modifications or supplements to the described specific embodiments or use similar ways to replace, as long as they do not deviate from the structure of the present application or exceed the scope defined by the present claims, which shall be within the protection scope of the present application.​

Claims

1. A device for forming a tubular carbon fiber product, comprising a frame (100) and a slurry tank (200) and a forming mold (300) mounted on the frame (100), characterized in that: The pulp tank (200) is arranged at the bottom of the rack (100), the forming die (300) is arranged above the pulp tank (200), the forming die (300) comprises a lower die lifting driving mechanism (301), a lower die connecting frame (302), a lower die (303), an upper die lifting driving mechanism (304), an upper die connecting frame (305), and an upper die (306), the lower die lifting driving mechanism (301) is installed at the top of the rack (100), the movable end of the lower die lifting driving mechanism (301) is fixedly connected with the lower die connecting frame (302), the lower die (303) is fixedly installed at the bottom of the lower die connecting frame (302), the upper die lifting driving mechanism (304) is installed at the top of the lower die connecting frame (302), the movable end of the upper die lifting driving mechanism (304) is fixedly connected with the upper die connecting frame (305), and the upper die (306) is fixedly installed at the bottom of the upper die connecting frame (305) and above the lower die (303); The lower die (303) comprises a lower die seat (3031) and a lower die core (3032), a plurality of lower die cores (3032) are fixedly installed on the lower die seat (3031), a first air chamber (3034) is arranged in the lower die seat (3031), the first air chamber (3034) is connected with a gas source through a first connecting pipe (3033), the gas source provides vacuum negative pressure and blowing positive pressure, the lower die core (3032) is in a cylindrical shape, the upper end is closed, the lower end is open, the lower end opening is in communication with the first air chamber (3034), and a plurality of suction filter holes are uniformly distributed on the cylinder wall of the lower die core (3032); The upper die (306) comprises an upper die seat (3061) and an upper die sleeve (3064), a plurality of upper die sleeves (3064) are fixedly installed in the upper die seat (3061) to form a plurality of through holes (3062) penetrating from top to bottom, when the lower die (303) and the upper die (306) are combined, the lower die core (3032) is inserted into the corresponding through hole (3062) to form a forming groove between the lower die core (3032) and the upper die sleeve (3064), a second air chamber (3065) is arranged in the upper die seat (3061), the second air chamber (3065) is connected with the gas source through a second connecting pipe (3063), the gas source provides vacuum negative pressure and blowing positive pressure, and a plurality of suction filter holes are uniformly distributed on the side wall of the upper die sleeve (3064) and in communication with the second air chamber (3065).

2. The cylindrical carbon fiber product forming apparatus according to claim 1, characterized by: The lower die lifting driving mechanism (301) comprises two first air cylinders vertically installed at the top of the rack (100), the piston rod end of the first air cylinder is fixedly connected with the lower die connecting frame (302), a guide rod is connected to the lower die connecting frame (302) and is in sliding fit with a guide sleeve arranged on the rack (100).

3. The cylindrical carbon fiber product forming apparatus according to claim 1, characterized by: The upper die lifting driving mechanism (304) comprises a second air cylinder vertically installed on the top of the lower die connecting frame (302), the piston rod end of the second air cylinder is fixedly connected with an upper die connecting frame (305), the upper die connecting frame (305) is connected with a guide rod, and the guide rod is in sliding fit with a guide sleeve arranged on the lower die connecting frame (302).

4. The cylindrical carbon fiber product forming apparatus according to claim 1, wherein: A plurality of air vibrators are arranged on the upper die seat (3061).

5. The cylindrical carbon fiber product forming apparatus according to claim 1, wherein: The forming die (300) is located above the middle part of the slurry pool (200), the two ends of the slurry pool (200) are in arc shape, stirring mechanisms are arranged at the two ends of the slurry pool (200) respectively, the stirring mechanism comprises a driving motor fixedly installed on the rack (100), the output end of the driving motor is connected with a stirring shaft, the stirring shaft extends into the slurry pool (200) and is connected with stirring paddles (201).

6. The cylindrical carbon fiber product forming apparatus according to claim 5, wherein: Two grouting pipes (202) are connected to the bottom of the slurry pool (200), the two grouting pipes (202) are in communication with a connecting pipe (203) arranged at the middle of the bottom of the slurry pool (200), and the bottom of the connecting pipe (203) is provided with a plurality of slurry outlets.

7. The cylindrical carbon fiber product forming apparatus according to claim 1, wherein: A material receiving mechanism (400) is arranged on one side of the rack (100), the material receiving mechanism (400) is in butt joint with a demolding station of the forming die (300), is used for receiving and transferring the formed products, and the material receiving mechanism (400) comprises a receiving table (401), the receiving table (401) is slidably connected with a receiving plate (402), and the receiving table (401) is provided with a third air cylinder (403) for driving the receiving plate (402) to move.

8. The apparatus according to any one of claims 1 to 7, wherein: A leveling mechanism (500) is further arranged on one side of the rack (100), the leveling mechanism (500) comprises a pushing frame (503), the pushing frame (503) is provided with a scraper (501) and a counterweight roller (502) on the side close to the forming die (300), the other side of the pushing frame (503) is connected with a leveling driving device, and the leveling driving device drives the scraper (501) to reciprocate on the upper end face of the upper die (306) through the pushing frame (503).

9. The cylindrical carbon fiber product forming apparatus according to claim 8, characterized by: The leveling driving device comprises a connecting rod (505) and a fourth air cylinder (506), one end of the connecting rod (505) is hinged to the pushing frame (503), the other end is hinged to the bottom of the rack (100), one end of the fourth air cylinder (506) is hinged to the rack (100), the other end is hinged to the middle part of the connecting rod (505), and the fourth air cylinder (506) drives the connecting rod (505) to rotate around the hinged point of the connecting rod (505) and the rack (100) and then drives the pushing frame (503) to move.

10. The cylindrical carbon fiber product forming apparatus according to claim 9, characterized by: A supporting rod (504) is connected to the upper part of the connecting rod (505), and the supporting rod (504) supports the pushing frame (503) before the scraper (501) contacts the upper die (306).

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