Carbon fiber crucible preform forming structure

Abstract

The utility model discloses a carbon fiber crucible preform forming structure which comprises a tunnel type dryer and a needling atomization spraying mechanism, two roll shaft conveyors matched with the tunnel type dryer are symmetrically arranged at the feeding end of the tunnel type dryer, a hanging bracket is jointly arranged above the two roll shaft conveyors, and the needling atomization spraying mechanism is arranged above the hanging bracket. The needling atomization spraying mechanism is fixedly mounted at the bottom of the hanging bracket; and a base is arranged below the two roll shaft conveyors. According to the carbon fiber crucible preform needling device, the roller shaft conveyor, the hanging bracket, the base, the mounting and lifting assembly, the first motor, the vertical rod, the sliding groove, the bidirectional moving assembly, the connecting rod, the clamping rod, the supporting plate and the limiting assembly are arranged, assembly line type design is adopted in the whole device, and after needling of a carbon fiber crucible preform is completed, the carbon fiber crucible preform is directly fed into a tunnel type drying machine to be dried; and manual carrying or external carrying equipment is not needed for transfer operation, so that the forming efficiency of the carbon fiber crucible preform is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon fiber crucible preform processing, in particular to a forming structure of a carbon fiber crucible preform. Background Technique

[0002] A carbon fiber crucible preform is a preform made of carbon fiber as a reinforcing material through specific process technologies, and is mainly used for the preparation of carbon / carbon composite material crucibles. This preform combines the excellent properties of carbon fiber, such as ablation resistance, high temperature resistance, etc., so that the carbon fiber crucible preform has a wide range of applications in the fields of aerospace, military, medical, etc.

[0003] The needle punching forming process of a carbon fiber crucible is an important preparation process, which plays a crucial role in the structural performance and mechanical properties of the crucible. The needle punching forming technology uses special needles with backward barbs for needle punching to form a quasi-three-dimensional network structure reinforcement with certain strength on both the plane and the interlayer. This structure overcomes the shortcoming of the weak interlayer strength of the 2D ply preform, and at the same time avoids the weaknesses of the complex process and high cost of the 3D braided preform. It is a multi-purpose and high-tech preform forming technology. This technology not only improves the connectivity between carbon fiber layers, but also greatly enhances the structural performance of the crucible, reduces the raw material cost and processing cost, and at the same time improves the service life of the crucible.

[0004] The existing carbon fiber crucible needle punching forming equipment with the publication number of CN220246409U includes a side cylindrical surface section needle punching component. The side cylindrical surface section needle punching component includes an R angle measurement component, and the R angle measurement component points to the R angle surface on the side of the crucible. A laser curved surface scanning component is assembled on the R angle measurement component. The R angle measurement component measures the R angle section part on the side of the crucible, and the R angle scanner can quickly measure the R angles at various positions.

[0005] This needle punching forming equipment arranges needle punching components at different angles and corresponds to different positions at the bottom of the crucible. When the mold rotates one week, the needle punching of a unit layer can be completed, greatly improving the processing efficiency.

[0006] However, in the actual use process, this needle punching forming equipment is not designed in a pipeline manner. After the carbon fiber crucible preform is processed, it needs to be removed from the needle punching forming equipment, and then manually or by an external handling device, it is transferred to an oven for heating. This is not only more troublesome, but also the transfer process is time-consuming, affecting the forming efficiency of the carbon fiber crucible preform. At the same time, this needle punching forming equipment cannot compress the time consumed for loading and unloading the carbon fiber crucible preform within the time consumed for its needle punching forming processing, which further reduces the forming efficiency of the carbon fiber crucible preform. Therefore, improvements are proposed. Summary of the Utility Model

[0007] The present utility model is a forming structure of a carbon fiber crucible preform, which is proposed to solve the disadvantages existing in the prior art.

[0008] To achieve the above object, the present utility model adopts the following technical solution: A forming structure of a carbon fiber crucible preform, including a tunnel dryer and a needle-punching atomizing spraying mechanism. At the feeding end of the tunnel dryer, two matching roller conveyors are symmetrically arranged. Above the two roller conveyors, a hanging bracket is jointly provided, and the needle-punching atomizing spraying mechanism is fixedly installed at the bottom of the hanging bracket;

[0009] Below the two roller conveyors, a base is jointly provided. The base is equipped with a lifting assembly. The movable end of the lifting assembly is fixedly installed with a mounting seat. At the inner bottom of the mounting seat, a first motor is fixedly installed. The driving end of the first motor is fixedly connected with a vertical rod, and the vertical rod is rotatably connected with the mounting seat;

[0010] A plurality of chutes communicating with the inside of the vertical rod are uniformly arranged on the outer surface of the vertical rod. A bidirectional moving assembly is jointly installed between the plurality of chutes and the vertical rod;

[0011] Both movable ends of the bidirectional moving assembly are rotatably connected with a plurality of connecting rods, and a clamping rod is jointly rotatably connected between adjacent two connecting rods;

[0012] The top of the vertical rod is fixedly connected with a support plate;

[0013] Limit components are installed on the tops of the two roller conveyors, and a bracket is jointly fixedly connected to the bottoms of the two roller conveyors.

[0014] Further, the lifting assembly includes two mounting plates, and the mounting plates are fixedly installed at the bottoms of adjacent roller conveyors. At the bottoms of the two mounting plates, screws are rotatably connected, and the screws penetrate through the bottom of the base and extend into the interior and are rotatably connected with the base. A movable seat is jointly threadedly sleeved on the outer surfaces of the two screws, and the mounting seat is fixedly installed on the top of the movable seat, which can control the lifting of the mounting seat.

[0015] Further, synchronous belt wheels are fixedly connected to the bottoms of the two screws, and a synchronous belt is jointly meshed and sleeved between the two synchronous belt wheels. On one side of the inner bottom of the base, a second motor is fixedly installed, and the driving end of the second motor is fixedly connected with the adjacent synchronous belt wheel, which can synchronously drive the two screws to rotate.

[0016] Further, the bidirectional moving component includes a third motor, and the third motor is fixedly installed inside the vertical rod. The driving end of the third motor is fixedly connected to a bidirectional screw rod, and the bidirectional screw rod is rotatably connected to the vertical rod. Two sliding seats are symmetrically thread sleeved on the outer surface of the bidirectional screw rod, and the sliding seats are rotatably connected to the adjacent connecting rods, so that the distance between the two sliding seats can be adjusted.

[0017] Further, the two sliding seats are slidably connected to a plurality of sliding grooves. The sliding grooves have a limiting effect on the sliding seats, and can ensure the stability of the movement of the sliding seats.

[0018] Further, both of the limiting components include long rods, and the long rods are fixedly connected to the adjacent roller conveyors. A hand wheel is arranged on one side of the outer surface of the long rod. One side of the outer surface of the hand wheel is fixedly connected to an adjusting screw rod, and the adjusting screw rod penetrates through the long rod and is threadedly connected thereto. The other end of the adjusting screw rod is rotatably connected to a limiting plate, and the position of the limiting plate can be adjusted.

[0019] Further, two sliding rods are symmetrically and fixedly connected to one side of the outer surface of the limiting plate, and the sliding rods penetrate through the long rod and are slidably connected thereto. The sliding rods and the long rod cooperate to have a limiting effect, and can ensure the stability of the movement of the limiting plate.

[0020] Advantages of the present utility model:

[0021] When the present utility model is in use, for the forming structure of the carbon fiber crucible preform, through the arranged roller conveyor, hanging bracket, base, installation, lifting component, first motor, vertical rod, sliding groove, bidirectional moving component, connecting rod, clamping rod, support plate and limiting component, the overall design is in a pipeline style. After the carbon fiber crucible preform is needled, it is directly sent into a tunnel dryer for drying treatment, without the need for manual handling or external handling equipment for transfer operations, improving the forming efficiency of the carbon fiber crucible preform. At the same time, the time consumed for loading and unloading the carbon fiber crucible preform is overlapped with the time consumed for needling operation, ensuring the continuity of processing and further improving the forming efficiency of the carbon fiber crucible preform. Description of the drawings

[0022] In order to more clearly illustrate the technical solutions of the present utility model, the drawings required for use in the following description of the specific embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 : The overall side view of the present utility model;

[0024] Figure 2: Partial perspective view of the present utility model;

[0025] Figure 3 : Partial sectional view of the present utility model.

[0026] The reference numerals are as follows:

[0027] 1, Tunnel dryer; 2, Needle-piercing atomizing spray mechanism; 3, Hanging bracket; 4, Base; 5, Roller conveyor; 6, Bracket; 7, Slide bar; 8, Handwheel; 9, Support plate; 10, Limit plate; 11, Adjusting screw; 12, Long rod; 13, Mounting plate; 14, Chute; 15, Screw; 16, Vertical rod; 17, Mounting seat; 18, Synchronous pulley; 19, Second motor; 20, Slide seat; 21, Bi-directional screw; 22, Connecting rod; 23, Clamping rod; 24, Third motor; 25, First motor; 26, Movable seat; 27, Synchronous belt. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] As Figures 1 to 3 shown, it relates to a forming structure for a carbon fiber crucible preform, including a tunnel dryer 1 and a needle-piercing atomizing spray mechanism 2. Lifting doors can be installed at both the inlet and outlet of the tunnel dryer 1 according to actual needs to reduce heat loss. Two roller conveyors 5 matching the tunnel dryer 1 are symmetrically arranged at the feeding end of the tunnel dryer 1. A hanging bracket 3 is jointly arranged above the two roller conveyors 5, and the needle-piercing atomizing spray mechanism 2 is fixedly installed at the bottom of the hanging bracket 3. The needle-piercing atomizing spray mechanism 2 mainly includes a bottom needle-piercing device (for performing needle-piercing forming treatment on the bottom of the crucible preform), a side needle-piercing device (corresponding to the side position of the crucible preform), a side needle-piercing device (including a side cylindrical surface section needle-piercing component, the side cylindrical surface section needle-piercing component corresponding to the cylindrical surface section of the crucible side, and the side cylindrical surface section needle-piercing component performing needle-piercing forming treatment on the cylindrical surface section of the crucible side) and an atomizing spray device, which are prior arts and have been described in detail in the carbon fiber crucible needle-piercing forming equipment with the publication number of CN220246409U. It is arranged centered on the support plate 9 to facilitate the needle-piercing operation on the carbon fiber crucible preform.

[0030] A base 4 is commonly provided below two roller conveyors 5. The base 4 is equipped with a lifting component. The movable end of the lifting component is fixedly installed with a mounting seat 17. The lifting component includes two mounting plates 13, and the mounting plates 13 are fixedly installed at the bottom of adjacent roller conveyors 5. The bottoms of both mounting plates 13 are rotatably connected with screw rods 15, and the screw rods 15 penetrate through the bottom of the base 4 and extend into the interior and are rotatably connected thereto. A bearing is commonly installed between the screw rods 15 and the base 4. The inner ring of the bearing is fixedly connected with the screw rod 15, and the outer ring of the bearing is fixedly connected with the base 4. A movable seat 26 is commonly threadedly sleeved on the outer surfaces of the two screw rods 15, and the mounting seat 17 is fixedly installed on the top of the movable seat 26. The bottoms of both screw rods 15 are fixedly connected with synchronous belt wheels 18. A synchronous belt 27 is commonly meshed and sleeved between the two synchronous belt wheels 18. A second motor 19 is fixedly installed on one side of the inner bottom of the base 4, and the driving end of the second motor 19 is fixedly connected with the adjacent synchronous belt wheel 18. The second motor 19 is a prior art and can be selected with corresponding models and specifications according to actual needs.

[0031] A first motor 25 is fixedly installed on the inner bottom of the mounting seat 17. The driving end of the first motor 25 is fixedly connected with a vertical rod 16, and the vertical rod 16 is rotatably connected with the mounting seat 17. The first motor 25 is a prior art and can be selected with corresponding models and specifications according to actual needs. The vertical rod 16 and the mounting seat 17 are connected by a bearing. The inner ring of the bearing is fixedly connected with the vertical rod 16, and the outer ring of the bearing is fixedly connected with the mounting seat 17.

[0032] A plurality of chutes 14 communicating with the interior of the vertical rod 16 are evenly formed on the outer surface of the vertical rod 16. A bidirectional moving component is commonly installed between the plurality of chutes 14 and the vertical rod 16. Both movable ends of the bidirectional moving component are rotatably connected with a plurality of connecting rods 22. An adjacent pair of connecting rods 22 are commonly rotatably connected with a clamping rod 23. The bidirectional moving component includes a third motor 24, and the third motor 24 is fixedly installed inside the vertical rod 16. The driving end of the third motor 24 is fixedly connected with a bidirectional screw rod 21, and the bidirectional screw rod 21 is rotatably connected with the vertical rod 16. The bidirectional screw rod 21 and the vertical rod 16 are connected by a bearing. The inner ring of the bearing is fixedly connected with the bidirectional screw rod 21, and the outer ring of the bearing is fixedly connected with the vertical rod 16. Two sliding seats 20 are symmetrically threadedly sleeved on the outer surface of the bidirectional screw rod 21, and the sliding seats 20 are rotatably connected with the adjacent connecting rods 22. The connecting rods 22 are rotatably connected with the sliding seats 20 and the clamping rod 23 through pins. The two sliding seats 20 are slidably connected with the plurality of chutes 14. The third motor 24 is a prior art and can be selected with corresponding models and specifications according to actual needs.

[0033] The top of the vertical rod 16 is fixedly connected with a support plate 9.

[0034] Limit components are installed on the tops of both of the two roller conveyors 5. A bracket 6 is fixedly connected to the bottoms of the two roller conveyors 5 together. Both of the two limit components include a long rod 12, and the long rod 12 is fixedly connected to the adjacent roller conveyor 5. A handwheel 8 is arranged on one side of the outer surface of the long rod 12. A regulating screw 11 is fixedly connected to one side of the outer surface of the handwheel 8. The regulating screw 11 penetrates through the long rod 12 and is in threaded connection with the long rod 12. The other end of the regulating screw 11 is rotatably connected to a limit plate 10. Two slide bars 7 are symmetrically and fixedly connected to one side of the outer surface of the limit plate 10. The slide bars 7 penetrate through the long rod 12 and are in sliding connection with the long rod 12.

[0035] Working principle: First, adjust the distance between the two limit plates 10. Rotate the two handwheels 8. The handwheels 8 drive the regulating screws 11 to rotate. The cooperation between the regulating screws 11 and the long rod 12 can drive the limit plates 10 to move until the setting is reached. When performing the needling operation on the carbon fiber crucible preform, invert it on the rollers of the two roller conveyors 5, and then convey it to directly above the support plate 9 through the roller conveyors 5. The second motor 19 operates. The second motor 19 drives the synchronous pulley 18 connected thereto to rotate. The two synchronous pulleys 18 and the synchronous belt 27 cooperate to drive the two screws 15 to rotate. The screws 15 drive the movable seat 26 to rise. The movable seat 26 drives the mounting seat 17, the vertical rod 16 and the support plate 9 to rise. When the support plate 9 contacts the carbon fiber crucible preform, it jacks up the carbon fiber crucible preform until the set height is reached. Then the third motor 24 operates. The third motor 24 drives the bidirectional screw 21 to rotate. The bidirectional screw 21 drives the two sliding seats 20 to approach each other. The two sliding seats 20 and the connecting rod 22 push the clamping rod 23 to approach the inner wall of the carbon fiber crucible preform until the positioning and fixing of the carbon fiber crucible preform are completed. Then the needle spraying atomization mechanism 2 starts to perform the spraying and needling operation. At the same time, the first motor 25 operates. The first motor 25 drives the vertical rod 16 and the support plate 9 to rotate, so as to drive the carbon fiber crucible preform to slowly rotate through each component until the needling operation is completed (the feeding operation can be carried out during this period). Then each component cooperates to place the carbon fiber crucible preform on the two roller conveyors 5. The roller conveyors 5 convey the carbon fiber crucible preform to the mesh belt conveyor of the tunnel dryer 1 and convey it into the dryer through the mesh belt conveyor for drying. After the drying is completed, it is conveyed out.

[0036] It should be noted that in actual use, an existing PLC controller can be added. The PLC controller is electrically connected to the tunnel dryer 1, the roller conveyor 5, the needle atomization spraying mechanism 2, the first motor 25, the second motor 19, and the third motor 24, which is convenient for controlling the overall operation. The specific data analysis and processing involved to further implement the control function are the method contents that can be achieved by those skilled in the art based on common knowledge, and these method contents are not within the scope of this solution. The above description is only to illustrate the beneficial effects that can be achieved by this improvement in the hardware structure in combination with common knowledge.

[0037] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to only the specific embodiments. Obviously, according to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present invention, so that those skilled in the art in the relevant technical field can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A forming structure of a carbon fiber crucible preform, comprising a tunnel dryer (1) and a needle-punching atomizing spray mechanism (2), characterized in that: Two roller conveyors (5) matching the feeding end of the tunnel dryer (1) are symmetrically arranged, and a hanging bracket (3) is jointly arranged above the two roller conveyors (5), and the acupuncture atomization spraying mechanism (2) is fixedly installed at the bottom of the hanging bracket (3); A base (4) is jointly arranged below the two roller conveyors (5), a lifting assembly is installed on the base (4), a movable end of the lifting assembly is fixedly installed with a mounting seat (17), a first motor (25) is fixedly installed at the inner bottom of the mounting seat (17), a driving end of the first motor (25) is fixedly connected with a vertical rod (16), and the vertical rod (16) is rotatably connected with the mounting seat (17); A plurality of chutes (14) communicating with the inside of the vertical rod (16) are uniformly arranged on the outer surface of the vertical rod (16), and a bidirectional moving assembly is jointly installed between the plurality of chutes (14) and the vertical rod (16); Both movable ends of the bidirectional moving assembly are rotatably connected with a plurality of connecting rods (22), and a clamping rod (23) is jointly rotatably connected between two adjacent connecting rods (22); The top of the vertical rod (16) is fixedly connected with a support plate (9); Limit components are installed on the tops of the two roller conveyors (5), and a bracket (6) is jointly fixedly connected to the bottoms of the two roller conveyors (5).

2. The forming structure of a carbon fiber crucible preform according to claim 1, characterized in that: The lifting assembly includes two mounting plates (13), and the mounting plates (13) are fixedly installed at the bottoms of adjacent roller conveyors (5). Screws (15) are rotatably connected to the bottoms of the two mounting plates (13), and the screws (15) penetrate through the bottom of the base (4) and extend into the interior and are rotatably connected thereto. A movable seat (26) is jointly threadedly sleeved on the outer surfaces of the two screws (15), and the mounting seat (17) is fixedly installed at the top of the movable seat (26).

3. The forming structure of a carbon fiber crucible preform according to claim 2, characterized in that: Synchronous belt wheels (18) are fixedly connected to the bottoms of the two screws (15), a synchronous belt (27) is jointly meshed and sleeved between the two synchronous belt wheels (18), a second motor (19) is fixedly installed on one side of the inner bottom of the base (4), and a driving end of the second motor (19) is fixedly connected with the adjacent synchronous belt wheel (18).

4. A forming structure of a carbon fiber crucible preform according to claim 1, characterized in that: The bidirectional moving assembly includes a third motor (24), and the third motor (24) is fixedly installed inside the vertical rod (16). A driving end of the third motor (24) is fixedly connected with a bidirectional screw (21), and the bidirectional screw (21) is rotatably connected with the vertical rod (16). Two sliding seats (20) are symmetrically threadedly sleeved on the outer surface of the bidirectional screw (21), and the sliding seats (20) are rotatably connected with the adjacent connecting rods (22).

5. A forming structure of a carbon fiber crucible preform according to claim 4, characterized in that: The two sliding seats (20) are slidably connected with the plurality of chutes (14).

6. A forming structure of a carbon fiber crucible preform according to claim 1, characterized in that: Both of the two limiting components include a long rod (12), and the long rod (12) is fixedly connected to the adjacent roller conveyor (5). One side of the outer surface of the long rod (12) is provided with a handwheel (8). One side of the outer surface of the handwheel (8) is fixedly connected with an adjusting screw rod (11), and the adjusting screw rod (11) penetrates through the long rod (12) and is threadedly connected therewith. The other end of the adjusting screw rod (11) is rotatably connected with a limiting plate (10).

7. A forming structure for a carbon fiber crucible preform according to claim 6, characterized in that: On one side of the outer surface of the limiting plate (10), two sliding rods (7) are symmetrically and fixedly connected, and the sliding rods (7) penetrate through the long rod (12) and are slidably connected therewith.

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