A device for efficiently curing carbon fiber prepreg

Abstract

The invention discloses a device for efficiently curing carbon fiber prepreg, and relates to the technical field of carbon fiber curing; a support frame is arranged inside the tank body, a groove is opened in the middle of the support frame, a primary track frame is placed on the support frame, and one end of the primary track frame is rotatably connected to the support frame; an articulated seat is installed at one end of the feeding trolley, and the articulated seat is connected to the secondary track frame; a jacking structure at the same end as the articulated seat is installed on the feeding trolley, and the jacking structure includes an extension frame connected to the feeding trolley, the extension frame is inserted into the groove, a screw is installed inside the extension frame, a threaded barrel is installed on the screw, the threaded barrel is connected to the extension frame through a primary support rod and a secondary support rod, and an ejection wheel is connected at the intersection of the primary support rod and the secondary support rod. The device can effectively improve the efficiency of loading and unloading, shorten the production cycle, and improve production capacity.

Description

Technical Field

[0001] The invention relates to the technical field of carbon fiber curing, in particular to a device for efficiently curing carbon fiber prepreg. Background Art

[0002] Carbon fiber refers to high-strength and high-modulus fiber with a carbon content of more than 90%. It ranks first among all chemical fibers in terms of high temperature resistance. It is made of acrylic and viscose fibers as raw materials and is oxidized and carbonized at high temperature. It is an excellent material for manufacturing high-tech equipment such as aerospace. Carbon fiber is mainly composed of carbon elements and has the characteristics of high temperature resistance, friction resistance, heat conduction and corrosion resistance. It is fibrous and soft in appearance and can be processed into various fabrics. Because its graphite microcrystalline structure is preferentially oriented along the fiber axis, it has high strength and modulus along the fiber axis. Carbon fiber has a low density, so it has high specific strength and specific modulus. The main use of carbon fiber is as a reinforcing material to be compounded with resin, metal, ceramic and carbon to manufacture advanced composite materials.

[0003] Composite materials made of carbon fiber yarn, epoxy resin, release paper and other materials through coating, hot pressing, cooling, laminating, winding and other processes are called carbon fiber prepreg. Prepreg is an intermediate material for manufacturing composite materials and their products. It constitutes the basic unit of composite materials. The uniformity and stability of its quality are important links to ensure the quality and reliability of composite materials and their products. The curing of carbon fiber prepreg refers to the process of converting the resin from a liquid or viscous state to a solid state by heating and other means.

[0004] The autoclave is a very commonly used carbon fiber prepreg curing equipment. During operation, the carbon fiber prepreg is laid on the mold, pressed and transferred to the carriage, heated and sent to the bracket in the autoclave, and then cured by heat baking. However, the carriage for holding the carbon fiber prepreg is very large and heavy. The existing equipment generally places the carriage on a movable bracket, then transfers the movable bracket to the opening of the autoclave, manually pushes the carriage into the autoclave, and manually pulls it out after curing. On the one hand, manual operation requires waiting until the internal carriage cools down, and on the other hand, manual operation is difficult and inefficient, which greatly affects production efficiency. Summary of the invention

[0005] The purpose of the present invention is to provide a device for efficiently curing carbon fiber prepreg to solve the problems raised in the above background technology. A curing device is proposed that can quickly complete the loading and unloading work without setting a fixed traction structure in the autoclave, thereby improving production efficiency.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A device for efficiently curing carbon fiber prepreg, comprising a tank body and a feeding trolley; a support frame is arranged inside the tank body, a groove is opened in the middle of the support frame, a primary track frame is placed on the support frame, and one end of the primary track frame close to the tank body opening is rotatably connected to the support frame; a secondary track frame is placed on the feeding trolley, and the secondary track frame and the primary track frame match in shape; an articulated seat is installed at one end of the feeding trolley, and the articulated seat is connected to the secondary track frame; a jacking structure at the same end as the articulated seat is installed on the feeding trolley, and the jacking structure comprises an extension frame connected to the feeding trolley, the extension frame is inserted into the groove, a screw is installed inside the extension frame, a threaded barrel is installed on the screw, the threaded barrel is connected to the extension frame through a primary support rod and a secondary support rod, and an ejection wheel is connected at the intersection of the primary support rod and the secondary support rod;

[0008] A lifting structure is provided at one end of the feed trolley away from the hinged seat, the lifting structure is connected to the secondary track frame, and the lifting structure is used to lift one end of the secondary track frame;

[0009] A locking structure is provided at one end of the stretching frame close to the feeding trolley, the locking structure is connected to the inner wall of the groove, and the locking structure is used to fix the stretching frame and the feeding trolley to the support frame.

[0010] As a further solution of the present invention: one end of the screw is inserted into the feeding trolley, a motor is installed in the feeding trolley, the motor is connected to the screw, and a support wheel is installed at one end of the extension frame away from the feeding trolley, and the support wheel is inserted into the groove.

[0011] As a further solution of the present invention: the locking structure includes two wedge-shaped sliders relatively installed on the stretching frame, both sides of the stretching frame are provided with through grooves, the sliders are slidably connected with the through grooves, both sides of the groove are provided with clamping grooves corresponding to the positions of the through grooves, and the sliders are inserted into the clamping grooves.

[0012] As a further solution of the present invention: a vertical plate is arranged inside the stretching frame, an adjusting rod located between two sliders is installed on the vertical plate, a turntable is installed on the adjusting rod, the two sides of the turntable are connected to the sliders through connecting rods respectively, and a torsion spring is connected between the adjusting rod and the vertical plate.

[0013] As a further solution of the present invention: a transmission rod perpendicular to the adjusting rod is installed in the feeding trolley, the adjusting rod is inserted into one end of the feeding trolley and connected to the transmission rod through a bevel gear, one end of the transmission rod passes through the feeding trolley, and a control handle is installed on the transmission rod.

[0014] As a further solution of the present invention: a plurality of sets of wheels are installed on the feeding trolley, and the lifting structure includes a cross bar installed inside the feeding trolley, a telescopic rod is installed on the cross bar, and the telescopic rod is connected to the secondary track frame.

[0015] As a further solution of the present invention: a door panel is installed at one end of the tank body, a sealing ring is provided at the connection between the tank body and the door panel, a vacuum system is provided in the tank body, and a fixing frame is installed outside the tank body.

[0016] As a further solution of the present invention: a blower is installed on the tank body, a cooling rack located inside the blower is arranged in the tank body, the cooling rack is connected to the tank body through multiple groups of primary springs, and a pressure regulating hole is arranged on the tank body.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The above-mentioned equipment for efficiently curing carbon fiber prepreg is adopted. The device uses a feeding trolley to cooperate with the tank body of the hot press tank to complete the mold feeding, hot pressing curing and discharging of the carbon fiber prepreg. The driving vehicle equipped with the mold is placed on the feeding trolley, and the extension frame of the feeding trolley is inserted into the groove of the support frame and locked through the locking structure. The lifting structure raises one end of the secondary track frame, and the driving vehicle automatically slides down along the inclined surface into the tank body. After the curing is completed, the position of the threaded barrel is adjusted by using a screw rod to raise the intersection of the primary support rod and the secondary support rod, and the driving vehicle will move along the inclined surface to the feeding trolley again;

[0019] By using the above-mentioned equipment for efficiently curing carbon fiber prepreg, the device does not require manual dragging of the feed trolley, nor does it require the installation of a complex traction structure in the tank body. It can reduce the cooling waiting time and improve the loading and unloading efficiency, thereby significantly improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the structure of the equipment for efficiently curing carbon fiber prepreg.

[0021] Figure 2 Schematic diagram of the structure inside the tank of the equipment used for efficient curing of carbon fiber prepreg.

[0022] Figure 3 This is a schematic diagram of the structure of the tank body and the feeding trolley in the equipment for efficiently curing carbon fiber prepreg.

[0023] Figure 4 This is a schematic diagram of the structure of the feeding trolley and the stretching frame in the equipment for efficient curing of carbon fiber prepreg.

[0024] Figure 5Schematic diagram of the internal structure of the feed trolley in the equipment for efficient curing of carbon fiber prepreg.

[0025] Figure 6 Schematic diagram of the structure of the stretching frame in the equipment for efficiently curing carbon fiber prepreg.

[0026] Figure 7 Schematic diagram of the locking structure in the device for efficient curing of carbon fiber prepreg.

[0027] In the figure: 1-tank body; 11-sealing ring; 12-door panel; 13-cooling rack; 14-vacuum system; 15-primary spring; 16-fixing frame; 17-blower; 18-pressure regulating hole; 2-support frame; 21-primary track frame; 22-groove; 221-clamping groove; 3-feeding trolley; 31-wheel; 32-hinged seat; 33-secondary track frame; 4-lifting structure; 41-crossbar; 42-extension Retraction rod; 5-locking structure; 51-adjusting rod; 52-turntable; 53-bevel gear; 54-transmission rod; 55-control handle; 56-slider; 57-connecting rod; 58-torsion spring; 6-lifting structure; 61-extension frame; 611-vertical plate; 612-through groove; 62-screw; 63-threaded cylinder; 64-primary support rod; 65-ejection wheel; 66-secondary support rod; 67-support wheel; 68-motor. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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] See also Figures 1 to 7In an embodiment of the present invention, a device for efficiently curing carbon fiber prepreg comprises a tank body 1 and a feeding trolley 3; a support frame 2 is arranged inside the tank body 1, a groove 22 is opened in the middle of the support frame 2, a primary track frame 21 is placed on the support frame 2, and one end of the primary track frame 21 close to the opening of the tank body 1 is rotatably connected to the support frame 2; a secondary track frame 33 is placed on the feeding trolley 3, and the secondary track frame 33 and the primary track frame 21 are matched in shape; an articulated seat 3 is installed at one end of the feeding trolley 3 2, the articulated seat 32 is connected to the secondary track frame 33; the feeding trolley 3 is provided with a lifting structure 6 at the same end as the articulated seat 32, the lifting structure 6 comprises an extension frame 61 connected to the feeding trolley 3, the extension frame 61 is inserted into the groove 22, a screw 62 is installed inside the extension frame 61, a threaded barrel 63 is installed on the screw 62, the threaded barrel 63 is connected to the extension frame 61 through a primary support rod 64 and a secondary support rod 66, and an ejection wheel 65 is connected at the intersection of the primary support rod 64 and the secondary support rod 66;

[0030] A lifting structure 4 is provided at one end of the feed trolley 3 away from the hinge seat 32, and the lifting structure 4 is connected to the secondary track frame 33, and the lifting structure 4 is used to lift one end of the secondary track frame 33;

[0031] A locking structure 5 is provided at one end of the extension frame 61 close to the feeding trolley 3 . The locking structure 5 is connected to the inner wall of the groove 22 . The locking structure 5 is used to fix the extension frame 61 and the feeding trolley 3 to the support frame 2 .

[0032] The tank body 1 of the device is an autoclave, which can produce a high temperature and high pressure environment and is used to solidify and shape the carbon fiber prepreg. It should be noted that the device can be widely used on various horizontally placed tank bodies 1 of different sizes and types, and the definition of the tank body 1 should not be limited to the description of the picture. The pressurization system, heating system, blast system, cooling system, and the driving system for holding the carbon fiber prepreg that the autoclave needs to be set up are all inherent structures of the autoclave, so there is no excessive restriction.

[0033] The tank body 1 in the device is placed horizontally and opened at one end. A support frame 2 is provided inside the tank body 1, and the groove 22 in the middle of the support frame 2 is convenient for the extension frame 61 on the feeding trolley 3 to be inserted. The primary track frame 21 installed on the support frame 2 is used to enable the vehicle entering the tank body 1 to slide along the fixed track to the corresponding position for hot pressing, and the primary track frame 21 is connected to the support frame 2 at the end of the opening of the tank body 1. The device uses a movable feeding trolley 3. Before hot pressing, the door panel 12 of the tank body 1 is opened, and the feeding trolley 3 moves with the vehicle to the opening of the tank body 1. The secondary track frame 33 on the feeding trolley 3 is also used to place the vehicle and guide the movement of the vehicle. When the feeding trolley 3 moves to the corresponding position, the extension frame 61 is also inserted into the groove 22, and the locking structure 5 makes the feeding trolley 3 buckle on the support frame 2. At this time, the outer end of the secondary track frame 33 is lifted by the lifting structure 4, and the vehicle tilts and automatically moves into the tank body 1 along the inclined surface. The restraint of the locking structure 5 is released, the door panel 12 can be closed, and the carbon fiber prepreg inside can be hot-pressed and cured.

[0034] After the curing is completed, the door panel 12 is opened again, the feeding trolley 3 is docked with the support frame 2, and the stretching frame 61 is inserted into the groove 22 again. By controlling the rotation of the screw 62 and changing the position of the threaded tube 63, the angle between the primary support rod 64 and the secondary support rod 66 can be changed, and then the height of the ejector wheel 65 is increased. The ejector wheel 65 is located at the bottom of the primary track frame 21. When the ejector wheel 65 is continuously raised, the primary track frame 21 is also forced to tilt, so that the driving wheel located on the primary track frame 21 moves back to the feeding trolley 3 along the inclined surface again, and the processed carbon fiber prepreg is transferred out of the tank body 1.

[0035] The device does not require the installation of auxiliary traction or drive in the tank body 1, and can complete the loading and unloading of carbon fiber prepreg without manual pulling, avoiding the risk of injury to workers caused by high temperature, and shortening the time required for loading and unloading, thereby significantly improving the efficiency of carbon fiber prepreg processing.

[0036] As another embodiment of the present invention, please refer to Figure 3 and Figure 6 , one end of the screw rod 62 is inserted into the feed trolley 3, a motor 68 is installed in the feed trolley 3, the motor 68 is connected to the screw rod 62, and a support wheel 67 is installed at one end of the extension frame 61 away from the feed trolley 3, and the support wheel 67 is inserted into the groove 22. The motor 68 is used to provide drive for the screw rod 62, and the support wheel 67 is against the bottom of the groove 22, so that the suspended end of the extension frame 61 can be supported when entering the groove 22, and can bear a greater weight in the process of raising the first-level track frame 21.

[0037] See also Figure 1 , Figure 3 , Figure 6 and Figure 7 The locking structure 5 includes two wedge-shaped sliders 56 relatively mounted on the stretching frame 61. The stretching frame 61 has through grooves 612 on both sides. The sliders 56 are slidably connected with the through grooves 612. The groove 22 has snap-in grooves 221 corresponding to the positions of the through grooves 612 on both sides. The sliders 56 are inserted into the snap-in grooves 221. The sliders 56 can slide inward and outward. The sliders 56 are wedge-shaped. When the stretching frame 61 is inserted into the groove 22, they are pressed into the stretching frame 61 under the restriction of the edge of the groove 22. When the stretching frame 61 reaches the snap-in groove 221, the sliders 56 pop outward and snap into the snap-in groove 221, connecting the stretching frame 61 with the support frame 2.

[0038] See also Figure 7 , a vertical plate 611 is arranged inside the stretching frame 61, an adjusting rod 51 located between two sliders 56 is installed on the vertical plate 611, a rotating disk 52 is installed on the adjusting rod 51, and the sliders 56 are connected to the two sides of the rotating disk 52 through connecting rods 57, and a torsion spring 58 is connected between the adjusting rod 51 and the vertical plate 611. The adjusting rod 51 is rotatably connected with the vertical plate 611, and the adjusting rod 51 is used to control the rotating disk 52. When the adjusting rod 51 is rotated, the rotating disk 52 rotates accordingly, and the sliders 56 on both sides are driven to move inward through the connecting rod 57, and the sliders 56 are retracted, so that the feeding trolley 3 can be separated from the supporting frame 2. The torsion spring 58 makes the rotating disk 52 have a reset effect, and the sliders 56 will automatically push out to both sides after the adjusting rod 51 loses the external force.

[0039] See also Figure 6 and Figure 7 A transmission rod 54 perpendicular to the adjustment rod 51 is installed in the feed trolley 3, one end of the adjustment rod 51 is inserted into the feed trolley 3 and connected to the transmission rod 54 through a bevel gear 53, one end of the transmission rod 54 passes through the feed trolley 3, and a control handle 55 is installed on the transmission rod 54. Rotating the control handle 55 can drive the transmission rod 54 to rotate, thereby realizing the driving of the adjustment rod 51 and the slider 56.

[0040] See also Figure 1 , Figure 3 and Figure 5, the feed trolley 3 is equipped with multiple sets of wheels 31, and the lifting structure 4 includes a cross bar 41 installed inside the feed trolley 3, and a telescopic rod 42 is installed on the cross bar 41, and the telescopic rod 42 is connected to the secondary track frame 33. The wheels 31 enable the feed trolley 3 to move, the cross bar 41 is fixed in position, and the telescopic rod 42 can be extended to lift the secondary track frame 33 to an inclined state. The telescopic rod 42 can use a hydraulic rod, an electric push rod or a cylinder, or a telescopic structure such as a scissor structure. The description of the lifting structure 4 should not be regarded as a restrictive description, but a display of a structure that can achieve a corresponding effect.

[0041] See also Figures 1 to 3 , a door panel 12 is installed at one end of the tank body 1, a sealing ring 11 is provided at the connection between the tank body 1 and the door panel 12, a vacuum system 14 is provided inside the tank body 1, and a fixing frame 16 is installed outside the tank body 1. A sealing ring 11 for sealing is provided at the connection between the door panel 12 and the tank body 1. The sealing ring 11 is generally not a solid gasket, but is composed of rubber that can be inflated and enlarged in combination with other structures for sealing. The vacuum system 14 is an optional structure. For processing methods that require simultaneous pressure, high temperature and vacuuming, the cooperation of the vacuum structure is required, while for autoclaves without a vacuuming step, the vacuum system 14 is not a necessary structure. The fixing frame 16 provides support for the tank body 1.

[0042] See also Figures 1 to 3 The tank body 1 is provided with a blower 17, and a cooling rack 13 is provided inside the tank body 1 and is located inside the blower 17. The cooling rack 13 is connected to the tank body 1 through multiple groups of primary springs 15, and a pressure regulating hole 18 is provided on the tank body 1. The blower 17 is used to coordinate and adjust the airflow inside the tank body 1. The cooling rack 13 can accelerate the cooling inside the tank body 1 by coordinating the airflow and heat exchange. The pressure regulating hole 18 is used to connect the air source and the first-level device for adjusting the internal air pressure. The first-level spring 15 enables the cooling rack 13 to be in a state where it can move in a small range. After driving along the inclined surface of the secondary track frame 33 into the tank body 1, the first-level track frame 21 can be slightly tilted to brake, and the cooling rack 13 serves as the final braking buffer structure to prevent the frame equipped with the carbon fiber prepreg mold from impacting the tank body 1.

[0043] The working principle of the present invention is:

[0044] The device uses a feeding trolley 3 to cooperate with the tank body 1 for loading and unloading. A groove 22 is opened in the middle of the support frame 2 in the tank body 1. A primary track frame 21 whose inner side can be raised is placed in the tank body 1. A secondary track frame 33 which can be raised at one end is placed on the feeding trolley 3. At the same time, an extension frame 61 which can be inserted into the groove 22 is installed at one end of the tank body 1. An ejection wheel 65 which can be raised is installed in the extension frame 61. A driving vehicle equipped with a carbon fiber prepreg mold is placed on the feeding trolley 3, and the feeding trolley 3 is moved to the support frame 2. The secondary track frame 33 is raised to push the driving vehicle into the tank body 1. After curing is completed, the inner side of the primary track frame 21 is raised, and the driving vehicle can be transferred to the feeding trolley 3. It is convenient and quick to use, and the efficiency of loading and unloading is greatly improved.

[0045] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A device for efficiently curing carbon fiber prepreg, comprising a tank and a feeding trolley; characterized in that: A support frame is provided inside the tank body, a groove is opened in the middle of the support frame, a primary track frame is placed on the support frame, and one end of the primary track frame close to the opening of the tank body is rotatably connected to the support frame; a secondary track frame is placed on the feeding trolley, and the secondary track frame and the primary track frame match in shape; an articulated seat is installed at one end of the feeding trolley, and the articulated seat is connected to the secondary track frame; a jacking structure with the same end as the articulated seat is installed on the feeding trolley, and the jacking structure includes an extension frame connected to the feeding trolley, the extension frame is inserted into the groove, a screw is installed inside the extension frame, a threaded barrel is installed on the screw, and the threaded barrel is connected to the extension frame through a primary support rod and a secondary support rod, and an ejection wheel is connected at the intersection of the primary support rod and the secondary support rod; A lifting structure is provided at one end of the feed trolley away from the hinged seat, the lifting structure is connected to the secondary track frame, and the lifting structure is used to lift one end of the secondary track frame; A locking structure is provided at one end of the stretching frame close to the feeding trolley, the locking structure is connected to the inner wall of the groove, and the locking structure is used to fix the stretching frame and the feeding trolley to the support frame.

2. The device for efficiently curing carbon fiber prepreg according to claim 1, characterized in that: One end of the screw is inserted into the feeding trolley, a motor is installed in the feeding trolley, the motor is connected to the screw, and a support wheel is installed at one end of the extension frame away from the feeding trolley, and the support wheel is inserted into the groove.

3. The device for efficiently curing carbon fiber prepreg according to claim 1, characterized in that: The locking structure includes two wedge-shaped sliders relatively mounted on the stretching frame, both sides of the stretching frame are provided with through grooves, the sliders are slidably connected with the through grooves, both sides of the groove are provided with clamping grooves corresponding to the positions of the through grooves, and the sliders are inserted into the clamping grooves.

4. The device for efficiently curing carbon fiber prepreg according to claim 3, characterized in that: A vertical plate is provided inside the stretching frame, an adjusting rod located between two sliders is installed on the vertical plate, a rotating disk is installed on the adjusting rod, sliders are connected to both sides of the rotating disk through connecting rods, and a torsion spring is connected between the adjusting rod and the vertical plate.

5. The device for efficiently curing carbon fiber prepreg according to claim 4, characterized in that: A transmission rod perpendicular to the adjusting rod is installed in the feeding trolley. The adjusting rod is inserted into one end of the feeding trolley and connected to the transmission rod through a bevel gear. One end of the transmission rod passes through the feeding trolley, and a control handle is installed on the transmission rod.

6. The device for efficiently curing carbon fiber prepreg according to claim 1, characterized in that: The feeding trolley is provided with a plurality of sets of wheels, and the lifting structure comprises a cross bar installed inside the feeding trolley, a telescopic rod is installed on the cross bar, and the telescopic rod is connected to the secondary track frame.

7. The device for efficiently curing carbon fiber prepreg according to claim 1, characterized in that: A door plate is installed at one end of the tank body, a sealing ring is arranged at the connection between the tank body and the door plate, a vacuum system is arranged in the tank body, and a fixing frame is installed outside the tank body.

8. The device for efficiently curing carbon fiber prepreg according to claim 1 or 7, characterized in that: A blower is installed on the tank body, a cooling rack located inside the blower is arranged in the tank body, the cooling rack is connected to the tank body through multiple groups of primary springs, and a pressure regulating hole is arranged on the tank body.

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