Cylindrical carbon fiber product forming equipment

Abstract

The invention provides cylindrical carbon fiber product forming equipment which is characterized in that a pulp chest is arranged at the bottom of a rack, a forming mold is arranged above the pulp chest, and 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 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 cores are cylindrical, the upper ends of the lower die cores are closed, the lower ends of the lower die cores are open, the lower die cores are communicated with the first air chamber, and suction filtration holes are distributed in the cylindrical walls of the lower die cores. The upper die sleeves are installed in the upper die base to form a plurality of vertically-through through holes, when the lower die and the upper die are assembled, the lower die cores are inserted into the corresponding through holes to form forming grooves between the lower die cores and the upper die sleeves, a second air chamber is arranged in the upper die base, and suction filtration holes communicated with the second air chamber are distributed in the side walls of the upper die sleeves. The production efficiency and the product quality are improved, and the method is suitable for large-scale production of cylindrical carbon fiber products.

Description

Technical Field

[0001] The invention relates to carbon fiber product forming equipment, in particular to a cylindrical carbon fiber product forming equipment. Background Art

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

[0003] However, the molding process of carbon fiber products is relatively complicated, requiring high-precision molds and strict process control. Especially when manufacturing cylindrical carbon fiber products, due to the special shape, higher requirements are placed on the design and manufacture of molds. The molding methods of carbon fiber parts usually include lamination curing molding, wet filtration molding, compression molding, autoclave molding, etc. Among them, wet filtration molding is to mix chopped carbon fiber, binder and dispersant into a uniformly dispersed slurry, and use a vacuum filtration molding method to obtain a blank, which is then dried, cured and carbonized. Because vacuum filtration mainly relies on applying a vacuum to trap carbon fibers in the mold through a pressure difference and gradually accumulate and form, for cylindrical carbon fiber parts, it is difficult to ensure that the thickness is completely uniform in the circumferential direction of the cylindrical carbon fiber parts through vacuum filtration, which affects the density and uniformity of the finished product. There is an urgent need in the market for a molding device that can efficiently and stably produce cylindrical carbon fiber products. Summary of the invention

[0004] In view of the problems existing in the above-mentioned prior art, the present invention provides a cylindrical carbon fiber product forming equipment to achieve efficient and stable production of carbon fiber products, improve production efficiency and enhance product quality.

[0005] The technical solution adopted by the present invention is as follows: a cylindrical carbon fiber product forming device comprises a frame, a pulp pool and a forming mold installed on the frame, the pulp pool is arranged at the bottom of the frame, the forming mold is arranged above the pulp pool, the forming mold comprises a lower mold lifting drive mechanism, a lower mold connecting frame, a lower mold, an upper mold lifting drive mechanism, an upper mold connecting frame, and an upper mold, the lower mold lifting drive mechanism is installed on the top of the frame, the movable end of the lower mold lifting drive mechanism is fixedly connected to the lower mold connecting frame, the lower mold is fixedly installed at the bottom of the lower mold connecting frame, the upper mold lifting drive mechanism is installed on the top of the lower mold connecting frame, the movable end of the upper mold lifting drive mechanism is fixedly connected to the upper mold connecting frame, the upper mold is fixedly installed at the bottom of the upper mold connecting frame and is located above the lower mold; The lower mold comprises a lower mold base and a lower mold core. A plurality of the lower mold cores are fixedly mounted on the lower mold base. A first air chamber is arranged in the lower mold base. The first air chamber is connected to an air source through a first connecting pipe. The air source provides vacuum negative pressure and blowing positive pressure. The lower mold core is cylindrical, and has a closed upper end and an open lower end. The lower end opening is connected to the first air chamber. A plurality of suction holes are evenly distributed on the cylinder wall of the lower mold core. The upper mold includes an upper mold base and an upper mold sleeve. A plurality of upper mold sleeves are fixedly installed in the upper mold base to form a plurality of through holes that pass through the upper and lower molds. When the lower mold and the upper mold are closed, the lower mold core is inserted into the corresponding through holes and a molding groove is formed between the lower mold core and the upper mold sleeve. A second air chamber is provided in the upper mold base. The second air chamber is connected to an air source through a second connecting pipe. The air source provides vacuum negative pressure and blowing positive pressure. A plurality of suction holes connected to the second air chamber are evenly distributed on the side wall of the upper mold sleeve.

[0006] Furthermore, the lower mold lifting drive mechanism includes two first cylinders vertically installed on the top of the frame, the piston rod end of the first cylinder is fixedly connected to the lower mold connecting frame, the lower mold connecting frame is connected to a guide rod, and the guide rod is slidably matched with a guide sleeve arranged on the frame.

[0007] Furthermore, the upper mold lifting drive mechanism includes a second cylinder vertically installed on the top of the lower mold connecting frame, the piston rod end of the second cylinder is fixedly connected to the upper mold connecting frame, and the upper mold connecting frame is connected to a guide rod, which slides with a guide sleeve arranged on the lower mold connecting frame.

[0008] Furthermore, a plurality of air vibrators are arranged on the upper die base.

[0009] Furthermore, the forming mold is located above the middle part of the pulp pool, and the two ends of the pulp pool are arc-shaped. A stirring mechanism is respectively arranged at the two ends of the pulp pool. The stirring mechanism includes a driving motor fixedly mounted on a frame, and the output end of the driving motor is connected to a stirring shaft, which extends into the pulp pool and is connected to a stirring blade.

[0010] Furthermore, two grouting pipes are connected to the bottom of the slurry pool, and the two grouting pipes are respectively connected to a connecting pipe arranged in the middle of the bottom of the slurry pool, and a plurality of slurry outlet holes are distributed at the bottom of the connecting pipe.

[0011] Furthermore, a material receiving mechanism is provided on one side of the frame, and the material receiving mechanism is docked with the demolding station of the molding mold for receiving and transferring the molded products. The material receiving mechanism includes a material receiving table, and a receiving plate is slidably connected to the material receiving table. A third cylinder for driving the receiving plate to move is installed on the material receiving table.

[0012] Furthermore, a leveling mechanism is provided on one side of the frame, and the leveling mechanism includes a push frame, a scraper and a counterweight roller are installed on the side of the push frame close to the forming mold, and a leveling drive device is connected to the other side of the push frame. The leveling drive device drives the scraper to reciprocate on the upper end surface of the upper mold through the push frame.

[0013] Furthermore, the leveling drive device includes a connecting rod and a fourth cylinder, one end of the connecting rod is hinged to the push frame, and the other end is hinged to the bottom of the frame, one end of the fourth cylinder is hinged to the frame, and the other end is hinged to the middle part of the connecting rod. The fourth cylinder is telescopically driven to drive the connecting rod to rotate around the hinge point with the frame, thereby pushing the push frame to move.

[0014] Furthermore, a support rod is connected to the upper part of the connecting rod, and the support rod supports the push frame before the scraper contacts the upper mold.

[0015] The beneficial effects of the present invention are: (1) The cylindrical carbon fiber product forming equipment of the present invention constructs a cylindrical forming groove by means of a precisely matched lower mold core and upper mold sleeve, and accurately controls the shape and size of the product; an automatic lifting drive mechanism is adopted to realize the rapid and efficient opening and closing and lifting operation of the mold; in the slurry suction stage, the mold is closed and immersed in the slurry pool as a whole for vacuum filtration and forming; after the forming is completed, the mold is lifted as a whole to the top of the slurry, effectively isolating the wet blank from the slurry to avoid affecting the forming effect; at the same time, by maintaining negative pressure on the upper mold and introducing positive pressure on the lower mold, the upper mold rises and easily brings out the formed wet blank, and convenient demolding can be achieved with the air vibrator, and the whole process is smooth and efficient; (2) During vacuum filtration molding, the present invention simultaneously applies negative pressure to the upper mold and the lower mold to achieve balanced filtration on both sides of the molding tank, ensuring that the carbon fiber slurry is subjected to uniform suction in all directions in the molding tank, avoiding slurry flow deviation caused by unilateral filtration, ensuring uniform distribution of carbon fibers in the circumference and axial direction, and significantly improving the thickness uniformity and overall physical property consistency of the cylindrical carbon fiber products; in addition, the strong pressure difference driving force formed by the double-sided negative pressure filtration promotes the close stacking of carbon fibers, reduces internal pores, and greatly improves the density of the products; (3) In the present invention, a leveling mechanism is provided to perform a leveling treatment on the top of the upper mold during and after the vacuum filtration molding process, thereby ensuring the flatness and smoothness of the surface of the cylindrical carbon fiber product and improving the appearance quality of the product; at the same time, the subsequent grinding and finishing steps are simplified, the production efficiency is improved, and the production cost is reduced; (4) The precise docking between the receiving mechanism and the demoulding station of the forming mold ensures that the formed cylindrical carbon fiber products can be quickly and accurately received and transported, realizing the automation of the production process, reducing manual intervention and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 It is a structural schematic diagram of another viewing angle of the present invention.

[0018] Figure 3 It is a schematic structural diagram of a pulp pool of the present invention.

[0019] Figure 4 It is a structural schematic diagram of the forming mold of the present invention.

[0020] Figure 5 It is a structural schematic diagram of the lower mold of the present invention.

[0021] Figure 6 It is a schematic diagram of the cross-sectional structure of the lower mold of the present invention.

[0022] Figure 7 It is a structural schematic diagram of the upper mold of the present invention.

[0023] Figure 8 It is a schematic diagram of the cross-sectional structure of the upper mold of the present invention.

[0024] Fig. 9 It is a cross-sectional schematic diagram of the upper mold and the lower mold in the mold closing state of the present invention.

[0025] Fig.10 It is a structural schematic diagram of the material receiving mechanism of the present invention.

[0026] Fig.11 It is a structural schematic diagram of the leveling mechanism of the present invention.

[0027] Fig.12 It is a structural schematic diagram of the leveling mechanism of the present invention from another perspective. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] like Figure 1 , Figure 2As shown, the cylindrical carbon fiber product forming equipment provided in this embodiment includes a frame 100 and a slurry pool 200, a forming mold 300, a material receiving mechanism 400, and a leveling mechanism 500 installed on the frame 100. The frame 100 serves as the supporting structure of the entire equipment, ensuring the stable installation and precise alignment of each component; the slurry pool 200 is arranged at the bottom of the frame 100, which is convenient for the storage and supply of carbon fiber slurry; the forming mold 300 is arranged above the slurry pool 200; the material receiving mechanism 400 is arranged at the front side of the slurry pool 200, and the material receiving mechanism 400 is precisely connected with the demoulding station of the forming mold 300 to ensure that the formed products 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 mold is scraped flat during the forming process to ensure the flatness and smoothness of the product surface.

[0030] like Figure 3 As shown, in this embodiment, the forming mold 300 is located above the middle of the pulp pool 200, and the two ends of the pulp pool 200 are arc-shaped. This design optimizes the flow performance of the slurry and reduces the accumulation and precipitation of the slurry in the corners. A stirring mechanism is respectively arranged at both ends of the pulp pool 200, and the stirring mechanism includes a driving motor fixedly mounted on the frame 100, and the output end of the driving motor is connected to a stirring shaft, and the stirring shaft extends into the pulp pool 200 and is connected to a stirring blade 201. The stirring mechanism drives the stirring shaft and the stirring blade 201 to rotate through the driving motor, thereby achieving uniform stirring of the slurry, ensuring the uniformity and fluidity of the slurry, and avoiding the performance degradation caused by slurry stratification or precipitation. Two grouting pipes 202 are connected to the bottom of the pulp pool 200, and the two grouting pipes 202 are respectively connected to a connecting pipe 203 arranged in the middle of the bottom of the pulp pool 200, and a plurality of slurry outlet holes are distributed at the bottom of the connecting pipe 203. This design enables the slurry to be injected into the slurry pool 200 evenly and stably, ensuring the uniform distribution of the slurry, avoiding local accumulation during the grouting process, and improving the quality consistency of the product.

[0031] like Figure 4As shown, in this embodiment, the molding mold 300 includes a lower mold lifting drive mechanism 301, a lower mold connecting frame 302, a lower mold 303, an upper mold lifting drive mechanism 304, an upper mold connecting frame 305, and an upper mold 306. The lower mold lifting drive mechanism 301 is installed on the top of the frame 100, the movable end of the lower mold lifting drive mechanism 301 is fixedly connected to the lower mold connecting frame 302, the lower mold 303 is fixedly installed at the bottom of the lower mold connecting frame 302, the upper mold lifting drive mechanism 304 is installed on the top of the lower mold connecting frame 302, the movable end of the upper mold lifting drive mechanism 304 is fixedly connected to the upper mold connecting frame 305, and the upper mold 306 is fixedly installed at the bottom of the upper mold connecting frame 305 and is located above the lower mold 303. Specifically, the lower die lifting drive mechanism 301 includes two first cylinders vertically mounted on the top of the frame 100, the piston rod end of the first cylinder is fixedly connected to the lower die connecting frame 302, the lower die connecting frame 302 is connected with a guide rod, and the guide rod is slidably matched with a guide sleeve provided on the frame 100; the upper die lifting drive mechanism 304 includes a second cylinder vertically mounted on the top of the lower die connecting frame 302, the piston rod end of the second cylinder is fixedly connected to the upper die connecting frame 305, the upper die connecting frame 305 is connected with a guide rod, and the guide rod is slidably matched with a guide sleeve provided on the lower die connecting frame 302. Through this design, the upper and lower dies can be stably lifted and lowered as a whole, and the upper and lower dies can be easily separated.

[0032] like Figure 5-Figure 9 As shown, in this embodiment, the lower mold 303 includes a lower mold base 3031 and a lower mold core 3032. A plurality of lower mold cores 3032 are fixedly mounted on the lower mold base 3031. A first air chamber 3034 is arranged in the lower mold base 3031. The first air chamber 3034 is connected to an air source through a first connecting pipe 3033. The air source provides vacuum negative pressure and blowing positive pressure. The lower mold core 3032 is cylindrical, and the upper end is closed and the lower end is open. The lower end opening is connected to the first air chamber 3034. A plurality of suction holes are evenly distributed on the cylinder wall of the lower mold core 3032. The upper mold 306 includes an upper mold base 3061, an upper mold sleeve 3064, and a plurality of upper mold sleeves 306 4 is fixedly installed in the upper mold base 3061 to form a plurality of through holes 3062 that penetrate from top to bottom. When the lower mold 303 and the upper mold 306 are molded together, the lower mold core 3032 is inserted into the corresponding through holes 3062 and a molding groove is formed between the lower mold core 3032 and the upper mold sleeve 3064. A second air chamber 3065 is provided in the upper mold base 3061. The second air chamber 3065 is connected to the air source through the second connecting pipe 3063. The air source provides vacuum negative pressure and blowing positive pressure. A plurality of suction holes connected to the second air chamber 3065 are evenly distributed on the side wall of the upper mold sleeve 3064. In order to facilitate demoulding, a plurality of air vibrators are distributed and installed on the upper mold base 3061. Through this design, both sides of the cylindrical product can be simultaneously filtered and molded, and the subsequent demoulding operation is convenient.

[0033] like Figure 1 , Fig.10As shown, in this embodiment, a receiving mechanism 400 is provided on one side of the frame 100, and the receiving mechanism 400 is docked with the demoulding station of the molding mold 300, and is used to receive and transfer the molded product. The receiving mechanism 400 includes a receiving platform 401, and a receiving plate 402 is slidably connected to the receiving platform 401, and a third cylinder 403 is installed on the receiving platform 401 to drive the receiving plate 402 to move.

[0034] like Figure 2 , Fig.11 , Fig.12 As shown, a leveling mechanism 500 is also provided on one side of the frame 100, and the leveling mechanism 500 includes a push frame 503, and a scraper 501 and a counterweight roller 502 are installed on one side of the push frame 503 close to the forming mold 300, and a leveling drive device is connected to the other side of the push frame 503, and the leveling drive device drives the scraper 501 to reciprocate on the upper end surface of the upper mold 306 through the push frame 503. The leveling drive device includes a connecting rod 505 and a fourth cylinder 506, one end of the connecting rod 505 is hinged to the push frame 503, and the other end is hinged to the bottom of the frame 100, one end of the fourth cylinder 506 is hinged to the frame 100, and the other end is hinged to the middle of the connecting rod 505, and the fourth cylinder 506 is extended and retracted to drive the connecting rod 505 to rotate around the hinge point between the connecting rod 505 and the frame 100, thereby pushing the push frame 503 to move. A support rod 504 is connected to the upper part of the connecting rod 505, and the support rod 504 supports the push frame 503 before the scraper 501 contacts the upper mold 306. With this design, the upper and lower molds are completely immersed in the slurry for suction filtration and molding. The fourth cylinder 506 contracts, pulling the connecting rod 505 to rotate around the hinge point, and then the scraper 501 is sent to the upper mold base 3061 through the push 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 toward the side of the molding mold, and the push frame 503 disengages from the support rod 504 and pushes the scraper 501 forward to complete the leveling operation. After the molding is completed, the fourth cylinder 506 extends, thereby driving the leveling mechanism 500 to move out from above the slurry pool (such as Figure 2 as shown).

[0035] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the present invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A cylindrical carbon fiber product forming device, comprising a frame (100), a slurry tank (200) mounted on the frame (100), and a forming mold (300), characterized in that: The pulp pool (200) is arranged at the bottom of the frame (100), the forming mold (300) is arranged above the pulp pool (200), the forming mold (300) comprises a lower mold lifting drive mechanism (301), a lower mold connecting frame (302), a lower mold (303), an upper mold lifting drive mechanism (304), an upper mold connecting frame (305), and an upper mold (306), the lower mold lifting drive mechanism (301) is installed on the top of the frame (100), and the lower mold lifting drive mechanism (304) is installed on the top of the frame (100). 01) is fixedly connected to the lower die connecting frame (302), the lower die (303) is fixedly mounted on the bottom of the lower die connecting frame (302), the upper die lifting drive mechanism (304) is mounted on the top of the lower die connecting frame (302), the movable end of the upper die lifting drive mechanism (304) is fixedly connected to the upper die connecting frame (305), and the upper die (306) is fixedly mounted on the bottom of the upper die connecting frame (305) and is located above the lower die (303); The lower mold (303) comprises a lower mold base (3031) and a lower mold core (3032). A plurality of the lower mold cores (3032) are fixedly mounted on the lower mold base (3031). A first air chamber (3034) is arranged in the lower mold base (3031). The first air chamber (3034) is connected to an air source via a first connecting pipe (3033). The air source provides vacuum negative pressure and blowing positive pressure. The lower mold core (3032) is cylindrical, with a closed upper end and an open lower end. The lower end opening is connected to the first air chamber (3034). A plurality of suction holes are evenly distributed on the cylinder wall of the lower mold core (3032). The upper mold (306) comprises an upper mold base (3061) and an upper mold sleeve (3064). A plurality of upper mold sleeves (3064) are fixedly mounted in the upper mold base (3061) to form a plurality of through holes (3062) extending vertically therethrough. When the lower mold (303) and the upper mold (306) are molded together, the lower mold core (3032) is inserted into the corresponding through hole (3062) and a molding groove is formed between the lower mold core (3032) and the upper mold sleeve (3064). A second air chamber (3065) is provided in the upper mold base (3061). The second air chamber (3065) is connected to an air source via a second connecting pipe (3063). The air source provides vacuum negative pressure and blowing positive pressure. A plurality of suction holes connected to the second air chamber (3065) are evenly distributed on the side wall of the upper mold sleeve (3064).

2. The cylindrical carbon fiber product forming equipment according to claim 1, characterized in that: The lower die lifting drive mechanism (301) comprises two first cylinders vertically mounted on the top of the frame (100), the piston rod ends of the first cylinders being fixedly connected to the lower die connecting frame (302), the lower die connecting frame (302) being connected to a guide rod, the guide rod being slidably matched with a guide sleeve arranged on the frame (100).

3. The cylindrical carbon fiber product forming equipment according to claim 1, characterized in that: The upper die lifting drive mechanism (304) comprises a second cylinder vertically mounted on the top of the lower die connecting frame (302), the piston rod end of the second cylinder being fixedly connected to the upper die connecting frame (305), the upper die connecting frame (305) being connected to a guide rod, the guide rod being slidably matched with a guide sleeve arranged on the lower die connecting frame (302).

4. The cylindrical carbon fiber product forming equipment according to claim 1, characterized in that: A plurality of air vibrators are arranged on the upper mold base (3061).

5. The cylindrical carbon fiber product forming equipment according to claim 1, characterized in that: The forming die (300) is located above the middle of the pulp pool (200), the two ends of the pulp pool (200) are arc-shaped, and stirring mechanisms are respectively arranged at the two ends of the pulp pool (200), the stirring mechanism comprising a driving motor fixedly mounted on a frame (100), the output end of the driving motor being connected to a stirring shaft, the stirring shaft extending into the pulp pool (200) and being connected to a stirring blade (201).

6. The cylindrical carbon fiber product forming device according to claim 5, characterized in that: Two grouting pipes (202) are connected to the bottom of the slurry pool (200), and the two grouting pipes (202) are respectively connected to a connecting pipe (203) arranged in the middle of the bottom of the slurry pool (200), and a plurality of slurry outlet holes are distributed at the bottom of the connecting pipe (203).

7. The cylindrical carbon fiber product forming device according to claim 1, characterized in that: A material receiving mechanism (400) is provided on one side of the frame (100), and the material receiving mechanism (400) is docked with the demoulding station of the molding mold (300) and is used to receive and transfer the molded product. The material receiving mechanism (400) comprises a material receiving platform (401), a receiving plate (402) is slidably connected to the material receiving platform (401), and a third cylinder (403) is installed on the material receiving platform (401) for driving the receiving plate (402) to move.

8. The cylindrical carbon fiber product forming device according to any one of claims 1 to 7, characterized in that: A leveling mechanism (500) is also provided on one side of the frame (100), the leveling mechanism (500) comprising a push frame (503), a scraper (501) and a counterweight roller (502) being installed on one side of the push frame (503) close to the molding die (300), and a leveling drive device being connected to the other side of the push frame (503), the leveling drive device driving the scraper (501) to reciprocate on the upper end surface of the upper die (306) via the push frame (503).

9. The cylindrical carbon fiber product forming device according to claim 8, characterized in that: The leveling drive device comprises a connecting rod (505) and a fourth cylinder (506); one end of the connecting rod (505) is hinged to the push frame (503), and the other end is hinged to the bottom of the frame (100); one end of the fourth cylinder (506) is hinged to the frame (100), and the other end is hinged to the middle of the connecting rod (505); the fourth cylinder (506) is extended and retracted to drive the connecting rod (505) to rotate around the hinge point between the fourth cylinder (506) and the frame (100), thereby pushing the push frame (503) to move.

10. The cylindrical carbon fiber product forming device according to claim 9, characterized in that: A support rod (504) is connected to the upper portion of the connecting rod (505), and the support rod (504) supports the push frame (503) before the scraper (501) contacts the upper mold (306).

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