Carbon fiber composite material defect repairing device and repairing method

Abstract

The application discloses a kind of carbon fiber composite material defect repair equipment and repair method, it is related to gas cylinder repair equipment field, technical scheme is, including chassis, the middle part of chassis is set through passage, the lower portion of passage is set for supporting the support mechanism of carbon fiber gas cylinder, the upper surface of chassis one side parallelly arranged two slide rails, each slide rail is slidably connected with a slider, the clamping mechanism for clamping carbon fiber gas cylinder is fixedly arranged on slider, the middle part of clamping mechanism is set inflation passage, the inflation passage is coaxial with the axis of carbon fiber gas cylinder with gas inlet;The side of chassis is fixedly set main push rod;It further includes the guide rail fixedly set in the side of chassis, the repair mechanism for carbon fiber composite material repair is slidably arranged on guide rail.The beneficial effects of the application are: simple structure, convenient to use, fast repair speed, effectively shorten the repair time of carbon fiber gas cylinder, improve repair efficiency, reduce manpower and material cost.

Description

Technical Field

[0001] This invention relates to the field of gas cylinder repair equipment, and in particular to a defect repair device and method for carbon fiber composite materials. Background Technology

[0002] High-pressure gas cylinders are sealed containers that can hold gases at pressures higher than ambient or atmospheric pressure. They have a wide range of applications, including aerospace, new energy vehicles, and industrial production.

[0003] Based on their structural composition, commercially produced high-pressure gas cylinders are currently classified into four types. Type I high-pressure gas cylinders are entirely composed of metal steel, while Type II high-pressure gas cylinders, although also made of metal steel, have an outer layer of glass fiber composite material wound around them. In Type II cylinders, the metal and glass fiber composite material share the load. Type III and Type IV high-pressure gas cylinders are mainly based on carbon fiber reinforced plastic (CFRP) material. The former has a metal inner liner, while the latter has a plastic inner liner, both formed by CFRP winding. In both types of high-pressure gas cylinders, CFRP is the primary load-bearing material.

[0004] In 2000, the State promulgated the "Regulations for Safety Supervision of Gas Cylinders", which stipulates that gas cylinders must be inspected every three years. During the use of gas cylinders, accidental collisions often occur, resulting in dents on the cylinder's exterior. The national standard GB / T34347-2017, "Periodic Inspection and Evaluation of Low-Temperature Insulated Gas Cylinders," stipulates that if the dent depth of a low-temperature gas cylinder's outer shell is greater than or equal to 12mm, and the dent length is greater than or equal to 13% of the outer shell's circumference, the cylinder is considered unqualified and must be scrapped. Some cylinders with dent values ​​below the national standard require dent repair. Currently, dent repair involves manually grinding away the carbon fiber layer at the dent location to expose it. A steel plate is then welded into the dent, and a dent puller is used to repair it. This method typically involves single-point contact, making repair laborious. Furthermore, single-point pulling can easily cause localized restoration of the weld point, resulting in an uneven surface that cannot be restored to its original state. After the dent repair is completed, the steel plate is removed, and the carbon fiber layer on the outside of the cylinder is then manually repaired. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a device and method for repairing defects in carbon fiber composite materials.

[0006] The technical solution includes a base frame with a through channel in the middle. A support mechanism for supporting carbon fiber cylinders is provided below the channel. Two slide rails are arranged parallel to each other on one side of the upper surface of the base frame. A moving block is slidably connected to each slide rail. A clamping mechanism for clamping carbon fiber cylinders is fixedly provided on the moving block. An inflation channel is provided in the middle of the clamping mechanism. The inflation port of the inflation channel is coaxial with the axis of the carbon fiber cylinder.

[0007] A main push rod is fixedly installed on one side of the base frame. The fixed end of the main push rod is fixedly connected to the base frame, and the movable end of the main push rod is fixedly connected to the clamping mechanism.

[0008] It also includes a guide rail fixedly mounted on one side of the base frame, on which a repair mechanism for repairing carbon fiber composite materials is slidably mounted.

[0009] Preferably, the clamping mechanism includes a movable plate fixedly connected to the movable block, an annular base plate rotatably disposed at the center of one side of the movable plate, a plurality of grippers rotatably disposed on the side of the base plate away from the movable plate, an annular adjusting plate disposed on one side of the base plate, the adjusting plate being coaxial with the base plate, a plurality of connecting rods rotatably disposed on the adjusting plate, each connecting rod being rotatably connected to the center of one of the grippers;

[0010] It also includes an array of electric push rods arranged on the outside of the adjustment plate, the fixed end of the electric push rods being fixedly connected to the side wall of the adjustment plate, and the movable end of the electric push rods being fixedly connected to the base plate.

[0011] Preferably, a plurality of teeth are arranged in an array on the outer wall of the base plate, a drive motor is fixedly mounted on the upper end of the moving plate, and a drive gear is coaxially fixedly mounted on the motor shaft of the drive motor, the drive gear meshing with the teeth.

[0012] Preferably, the inflation channel includes an inflation pipe fixedly disposed in the middle of the movable plate, the inflation pipe being coaxial with the base plate, and one end of the inflation pipe extending to a side close to the adjusting plate.

[0013] The other end of the inflation tube is connected to an air pump via an air pipe, and the inflation tube also includes a pressure gauge installed on the inflation tube.

[0014] Preferably, the guide rail is L-shaped, with the longer side of the guide rail parallel to the axis of the carbon fiber cylinder. A guide groove is formed on the upper surface of the guide rail, and a trolley is slidably arranged in the guide groove. The trolley includes a slide plate slidably connected to the upper surface of the guide rail. Two L-shaped mounting brackets are rotatably arranged on the lower surface of the slide plate. Pulleys are rotatably arranged at both ends of the mounting brackets. The pulleys slide in the guide groove, and a repair mechanism is provided on the slide plate.

[0015] It also includes a walking motor fixedly mounted on one side of the skateboard, and a walking wheel is coaxially fixedly mounted on the motor shaft of the walking motor, with the walking wheel in close contact with the upper surface of the guide rail.

[0016] Preferably, the repair mechanism includes a slide frame slidably connected to the slide plate, a lead screw rotatably disposed in the middle of the slide frame, a slider slidably connected on the slide frame, the slider being fixedly connected to the slide plate, the slider being threadedly connected to the lead screw, a lead screw motor being fixedly disposed on the side of the slide frame away from the carbon fiber gas cylinder, the motor shaft of the lead screw motor being fixedly disposed coaxially with the lead screw, and a repair unit for repairing carbon fiber composite materials being fixedly disposed at the other end of the slide frame.

[0017] Preferably, the repair unit includes a bracket fixedly disposed on one side of the slide, with a pressure roller and an electric clamp fixedly disposed at both ends of the bracket respectively, and carbon fiber cloth wrapped around the outside of the pressure roller, one end of the carbon fiber cloth being movably connected to the outer wall of the pressure roller, and the other end being wrapped around the outside of the pressure roller and movably connected to the electric clamp.

[0018] A flame gun and a nozzle for spraying epoxy resin are fixedly installed on the side of the bracket near the pressure roller, and the outlet ends of the flame gun and the nozzle are both facing the carbon fiber gas cylinder.

[0019] Preferably, a tailstock is fixedly mounted at the end of the base frame away from the clamping mechanism, an auxiliary push rod is fixedly mounted on the tailstock, the auxiliary push rod is coaxial with the carbon fiber gas cylinder, and an extrusion plate is rotatably mounted on the movable end of the auxiliary push rod.

[0020] Preferably, the support mechanism includes a lifting plate disposed below the channel, a lifting rod fixedly disposed on the lower surface of the lifting plate, and a support frame for supporting the carbon fiber gas cylinder fixedly disposed on the upper surface of the lifting plate. Rollers are rotatably disposed on the support frame, and when the carbon fiber gas cylinder is placed on the support frame, the rollers are in contact with the cylinder body of the carbon fiber gas cylinder.

[0021] The repair method of the carbon fiber composite material defect repair equipment includes the following steps:

[0022] S1 Grinding: Grinding to remove the carbon fiber layer from defective areas of the carbon fiber gas cylinder;

[0023] S2 inflation: High-pressure gas at a certain pressure is injected into the gas cylinder;

[0024] S3 Baking: High-temperature flame baking is applied to the defective areas on the surface of the carbon fiber cylinder.

[0025] S4 Inspection: Visually inspect or use professional tools to inspect for defects in carbon fiber gas cylinders;

[0026] S5 Glue Application: After the surface temperature of the carbon fiber cylinder has decreased, apply epoxy resin glue to the defective areas on the surface of the carbon fiber cylinder.

[0027] S6 Repair: Cut the corresponding carbon fiber cloth according to the angle, sequence, size and quantity of the carbon fiber layer removed in step one, and lay the cut carbon fiber cloth according to the structure and direction;

[0028] The specific repair method is as follows: The carbon fiber cylinder is placed on the lifting plate, the lifting rod is activated to raise the cylinder to the same axis as the base plate, the electric push rod is activated, and the clamping mechanism clamps the cylinder. A manual inspection device is used to determine the location of the dent, and the carbon fiber layer at the dent is manually ground away to further determine its location and size. Then, a suitable size of carbon fiber cloth is manually cut and wound around the pressure roller, with one end clamped by an electric clamp. During the repair of the carbon fiber cylinder, a flame torch is first used to heat the dent. A traveling motor drives the trolley to move back and forth, increasing the heated area of ​​the dent. The high-pressure gas inside the cylinder restores the dent. Repair units 3-5 are then used to repair the carbon fiber layer.

[0029] The beneficial effects of the technical solution provided by the embodiments of the present invention are: simple structure, convenient use, fast repair speed, effectively shortening the repair time of carbon fiber gas cylinders, improving repair efficiency, and reducing manpower and material costs. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention.

[0031] Figure 2 This is a schematic diagram of the clamping mechanism according to an embodiment of the present invention.

[0032] Figure 3 This is a schematic diagram of the guide rail and repair mechanism according to an embodiment of the present invention.

[0033] Figure 4 This is a schematic diagram of the repair mechanism according to an embodiment of the present invention.

[0034] Figure 5 This is a schematic diagram of the support mechanism according to an embodiment of the present invention.

[0035] The attached diagrams are labeled as follows: 1. Base frame; 1-1. Support mechanism; 1-2. Lifting plate; 1-3. Lifting rod; 1-4. Roller; 1-5. Slide rail; 1-6. Gas filling channel; 1-61. Gas filling pipe; 1-62. Pressure gauge; 1-7. Main push rod; 1-8. Guide rail; 1-81. Slide groove; 1-82. Slide plate; 1-83. Pulley; 1-84. Travel motor; 1-85. Travel wheel; 1-9. Tailstock; 1-10. Auxiliary push rod; 2. Clamping mechanism; 2-1. Moving plate; 2- 2. Base plate; 2-3. Grippers; 2-4. Adjusting plate; 2-5. Connecting rod; 2-6. Electric push rod; 2-7. Gear; 2-8. Drive motor; 2-9. Drive gear; 3. Repair mechanism; 3-1. Slide; 3-2. Lead screw; 3-3. Slider; 3-4. Lead screw motor; 3-5. Repair unit; 3-51. Support; 3-52. Pressure roller; 3-53. Electric clamp; 3-54. Carbon fiber cloth; 3-55. Flame gun; 3-56. Nozzle; 100. Carbon fiber gas cylinder. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. Of course, the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0037] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0038] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0039] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0040] Example 1

[0041] See Figures 1 to 5 The present invention provides a defect repair device and repair method for carbon fiber composite materials, including a base frame 1. Two slide rails 1-5 are arranged in parallel on one side of the upper surface of the base frame 1. A moving block is slidably connected on each slide rail 1-5. A clamping mechanism 2 for clamping carbon fiber gas cylinder 100 is fixedly installed on the moving block. An inflation channel 1-6 is provided in the middle of the clamping mechanism 2. The gas filling port of the inflation channel 1-6 is coaxial with the axis of the carbon fiber gas cylinder 100.

[0042] A main push rod 1-7 is fixedly installed on one side of the base frame 1. The fixed end of the main push rod 1-7 is fixedly connected to the base frame 1, and the movable end of the main push rod 1-7 is fixedly connected to the clamping mechanism 2.

[0043] It also includes a guide rail 1-8 fixedly mounted on one side of the base frame 1, and a repair mechanism 3 for repairing carbon fiber composite materials is slidably mounted on the guide rail 1-8.

[0044] The clamping mechanism 2 includes a movable plate 2-1 fixedly connected to the movable block. An annular base plate 2-2 is rotatably arranged in the middle of one side of the movable plate 2-1. Several grippers 2-3 are rotatably arranged on the side of the base plate 2-2 away from the movable plate 2-1. An annular adjusting plate 2-4 is arranged on one side of the base plate 2-2. The adjusting plate 2-4 is coaxial with the base plate 2-2. Several connecting rods 2-5 are rotatably arranged on the adjusting plate 2-4. Each connecting rod 2-5 is rotatably connected to the middle of one of the grippers 2-3.

[0045] It also includes an array of electric push rods 2-6 arranged on the outside of the adjustment plate 2-4. The fixed end of the electric push rod 2-6 is fixedly connected to the side wall of the adjustment plate 2-4, and the movable end of the electric push rod 2-6 is fixedly connected to the base plate 2-2.

[0046] When the main push rod 1-7 pushes the clamping mechanism 2 to move towards the carbon fiber cylinder 100, the electric push rod 2-6 is activated, driving the adjusting plate 2-4 to move towards the side closer to the base plate 2-2. At this time, the adjusting plate 2-4 drives the movable ends of multiple grippers 2-3 to move closer to the carbon fiber cylinder 100 until the grippers 2-3 clamp the outer surface of the carbon fiber cylinder 100. Several anti-slip protrusions are arrayed on the movable ends of the grippers 2-3, which can increase the friction between the grippers 2-3 and the carbon fiber cylinder 100.

[0047] After the repair is completed, the electric push rod 2-6 is activated, pushing the adjustment plate 2-4 to move away from the bottom plate 2-2, causing the movable end of the gripper 2-3 to move away from the carbon fiber gas cylinder 100. At the same time, the main push rod 1-7 is activated, causing the clamping mechanism 2 to move away from the carbon fiber gas cylinder 100, making it easier for the operator to pick up and put down the carbon fiber gas cylinder 100.

[0048] Several teeth 2-7 are arranged in an array on the outer wall of the base plate 2-2. A drive motor 2-8 is fixedly installed at the upper end of the moving plate 2-1. A drive gear 2-9 is coaxially fixed on the motor shaft of the drive motor 2-8. The drive gear 2-9 meshes with the teeth 2-7.

[0049] The drive motor 2-8 is started, which drives the base plate 2-2 to rotate, thereby driving the carbon fiber gas cylinder 100 to rotate, making it easier to repair the carbon fiber gas cylinder 100.

[0050] The inflation channel 1-6 includes an inflation pipe 1-61 fixedly installed in the middle of the movable plate 2-1. The inflation pipe 1-61 is coaxial with the base plate 2-2, and one end of the air outlet of the inflation pipe 1-61 extends to the side near the adjusting plate 2-4.

[0051] The other end of the inflation tube 1-61 is connected to the air pump through an air pipe, and also includes a pressure gauge 1-62 installed on the inflation tube 1-61. The pressure gauge 1-62 facilitates monitoring of pressure changes during use.

[0052] As the main push rod 1-7 moves the clamping mechanism 2 toward the carbon fiber gas cylinder 100, the outlet end of the inflation tube 1-61 is inserted into the inlet of the carbon fiber gas cylinder 100, and then air at a certain pressure is injected into the carbon fiber gas cylinder 100. The air pressure is 1.275±2Mpa (13±2kgf / cm²). 2 ).

[0053] The guide rail 1-8 is L-shaped, with the longer side of the guide rail 1-8 parallel to the axis of the carbon fiber cylinder 100. A guide groove 1-81 is opened on the upper surface of the guide rail 1-8, and a trolley is slidably installed in the guide groove 1-81. The trolley includes a slide plate 1-82 that is slidably connected to the upper surface of the guide rail 1-8. Two L-shaped mounting brackets are rotatably installed on the lower surface of the slide plate 1-82. The mounting brackets are rotatably connected to the slide plate 1-82, which facilitates the movement of the trolley at the bend of the guide rail 1-8. Since the tail of the carbon fiber cylinder 100 is easily damaged by collisions, resulting in dents on the cylinder surface, the arc of the carbon fiber cylinder 100 is repaired by the bend, thereby improving the applicability of this device. Pulleys 1-83 are rotatably installed at both ends of the mounting brackets. The pulleys 1-83 slide in the guide groove 1-81, and a repair mechanism 3 is installed on the slide plate 1-82.

[0054] It also includes a walking motor 1-84 fixedly installed on one side of the slide plate 1-82, and a walking wheel 1-85 coaxially fixed on the motor shaft of the walking motor 1-84, with the walking wheel 1-85 in close contact with the upper surface of the guide rail 1-8.

[0055] The trolley is moved on the guide rail 1-8 by the walking motor 1-84, which drives the repair mechanism 3 to repair the surface of the carbon fiber gas cylinder 100.

[0056] The repair mechanism 3 includes a slide 3-1 that is slidably connected to the slide plate 1-82. A lead screw 3-2 is rotatably installed in the middle of the slide 3-1. A slider 3-3 is slidably connected to the slide 3-1. The slider 3-3 is fixedly connected to the slide plate 1-82. The slider 3-3 is threadedly connected to the lead screw 3-2. A lead screw motor 3-4 is fixedly installed on the side of the slide 3-1 away from the carbon fiber gas cylinder 100. The motor shaft of the lead screw motor 3-4 is coaxially fixedly installed with the lead screw 3-2. A repair unit 3-5 for repairing carbon fiber composite materials is fixedly installed at the other end of the slide 3-1.

[0057] The repair unit 3-5 includes a bracket 3-51 fixedly installed on one side of the slide 3-1. A pressure roller 3-52 and an electric clamp 3-53 are fixedly installed at both ends of the bracket 3-51, respectively. Carbon fiber cloth 3-54 is wrapped around the outside of the pressure roller 3-52. One end of the carbon fiber cloth 3-54 is movably connected to the outer wall of the pressure roller 3-52, and the other end is wrapped around the outside of the pressure roller 3-52 and movably connected to the electric clamp 3-53.

[0058] A flame gun 3-55 and a nozzle 3-56 for spraying epoxy resin are fixedly installed on the side of the bracket 3-51 near the pressure roller 3-52. The outlet ends of the flame gun 3-55 and the nozzle 3-56 are both facing the carbon fiber gas cylinder 100.

[0059] The flame torch 3-55 can heat the recessed area of ​​the carbon fiber gas cylinder 100 at a temperature of 650°~800°. When the outside of the recess is baked by a high-temperature flame of 650°~800°, some of the gas inside the carbon fiber gas cylinder 100 is heated and the pressure inside the carbon fiber gas cylinder 100 increases. The high pressure inside the carbon fiber gas cylinder 100 causes the recess of the carbon fiber gas cylinder 100 to recover. On the other hand, when the recess is baked by a high-temperature flame, the hardness of the material at the recessed area decreases, making it easier to restore the recess.

[0060] Nozzle 3-56 can spray epoxy resin adhesive onto the surface of carbon fiber cylinder 100. The epoxy resin adhesive bonds carbon fiber cloth 3-54 to the surface of carbon fiber cylinder 100 and the original carbon fiber layer. During the operation of nozzle 3-56, screw motor 3-4 starts and drives pressure roller 3-52 to approach the cylinder. Then, travel motor 1-84 starts and drives pressure roller 3-52 to move towards the dent repair area. At this time, electric clamp 3-53 is released, and carbon fiber cloth 3-54 is adhered to the surface of carbon fiber cylinder 100 with epoxy resin adhesive until carbon fiber cloth 3-54 completely covers the dent. Finally, travel motor 1-84 drives repair mechanism 3 to move back and forth, and pressure roller 3-52 makes carbon fiber cloth 3-54 completely adhere to the surface of carbon fiber cylinder 100.

[0061] In use, the carbon fiber cylinder 100 is placed on the lifting plate 1-2, and the lifting rod 1-3 is activated to raise the carbon fiber cylinder 100 to the coaxial position with the base plate 2-2. The electric push rod 2-6 is activated, and the clamping mechanism 2 clamps the carbon fiber cylinder 100. The location of the dent is determined manually using a detection device, and the carbon fiber layer at the dent is removed manually to further determine the location and size of the dent. Then, a carbon fiber cloth 3-54 of appropriate size is cut manually and wrapped around the pressure roller 3-52. One end is clamped by an electric clamp 3-53. When repairing the carbon fiber cylinder, the dent is first heated using a flame gun 3-55. The trolley is moved back and forth by the walking motor 1-84 to increase the heating area at the dent. The high-pressure gas inside the carbon fiber cylinder 100 restores the dent. Then, the repair unit 3-5 is used to repair the carbon fiber layer.

[0062] Example 2

[0063] Based on Embodiment 1, a through channel is provided in the middle of the base frame 1, and a support mechanism 1-1 for supporting the carbon fiber gas cylinder 100 is provided below the channel. The support mechanism 1-1 includes a lifting plate 1-2 provided below the channel. A lifting rod 1-3 is fixedly provided on the lower surface of the lifting plate 1-2, and a support frame for supporting the carbon fiber gas cylinder 100 is fixedly provided on the upper surface of the lifting plate 1-2. Rollers 1-4 are rotatably provided on the support frame. When the carbon fiber gas cylinder 100 is placed on the support frame, the rollers 1-4 are in contact with the cylinder body of the carbon fiber gas cylinder 100, and the carbon fiber gas cylinder 100 does not contact the upper surface of the lifting plate 1-2.

[0064] This structure enables the switching of the carbon fiber gas cylinder 100. The lifting rod 1-3 is installed underground. By lowering the lifting rod 1-3, the lifting plate 1-2 is positioned slightly below ground level, allowing the gas cylinder to roll onto the rollers 1-4 of the lifting plate 1-2. Then, the lifting rod 1-3 pushes the lifting plate 1-2 upwards to above the base frame 1. After the carbon fiber gas cylinder 100 is repaired, the lifting plate 1-2 is lowered again to remove the carbon fiber gas cylinder 100.

[0065] Example 3

[0066] Based on embodiment 2, a tailstock 1-9 is fixedly installed at the end of the base frame 1 away from the clamping mechanism 2, and an auxiliary push rod 1-10 is fixedly installed on the tailstock 1-9. The auxiliary push rod 1-10 is coaxial with the carbon fiber gas cylinder 100, and a compression plate is rotatably installed at the movable end of the auxiliary push rod 1-10.

[0067] By setting the main push rod 1-7 and the auxiliary push rod 1-10, the carbon fiber cylinder 100 can be firmly placed on the base frame 1, avoiding the carbon fiber cylinder 100 from shaking during the repair process and affecting the repair effect.

[0068] Example 4

[0069] Based on Examples 1-3, the repair method of this carbon fiber composite material defect repair device is as follows:

[0070] 10. A repair method based on the carbon fiber composite material defect repair device according to any one of claims 1-9, comprising the following steps:

[0071] S1 Grinding: Grinding to remove the carbon fiber layer from defective areas of the carbon fiber gas cylinder;

[0072] S2 inflation: High-pressure gas at a certain pressure is injected into the gas cylinder. The pressure of the gas is 1.275±2Mpa (13±2kgf / cm2).

[0073] S3 Baking: High-temperature flame baking is applied to the defective areas on the surface of the carbon fiber gas cylinder, with a flame temperature of 650°~800°.

[0074] S4 Inspection: Visually inspect or use professional tools to inspect for defects in carbon fiber gas cylinders;

[0075] S5 Glue Application: After the surface temperature of the carbon fiber cylinder has decreased, apply epoxy resin glue to the defective areas on the surface of the carbon fiber cylinder.

[0076] S6 Repair: Cut the corresponding carbon fiber cloth according to the angle, sequence, size and quantity of the carbon fiber layer removed in step one, and lay the cut carbon fiber cloth according to the structure and direction.

[0077] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A defect repair device for carbon fiber composite materials, characterized in that, The system includes a base frame (1), with a through channel in the middle of the base frame (1). A support mechanism (1-1) for supporting a carbon fiber gas cylinder (100) is provided below the channel. Two slide rails (1-5) are arranged parallel to each other on one side of the upper surface of the base frame (1). A moving block is slidably connected on each slide rail (1-5). A clamping mechanism (2) for clamping the carbon fiber gas cylinder (100) is fixedly provided on the moving block. An inflation channel (1-6) is provided in the middle of the clamping mechanism (2). The inflation port of the inflation channel (1-6) is coaxial with the axis of the carbon fiber gas cylinder (100). A main push rod (1-7) is fixedly installed on one side of the base frame (1). The fixed end of the main push rod (1-7) is fixedly connected to the base frame (1), and the movable end of the main push rod (1-7) is fixedly connected to the clamping mechanism (2). It also includes a guide rail (1-8) fixedly installed on one side of the base frame (1), and a repair mechanism (3) for carbon fiber composite material repair is slidably installed on the guide rail (1-8). The guide rail (1-8) is L-shaped, with the longer side of the guide rail (1-8) parallel to the axis of the carbon fiber gas cylinder (100). A guide groove (1-81) is formed on the upper surface of the guide rail (1-8). A trolley is slidably arranged in the guide groove (1-81). The trolley includes a slide plate (1-82) slidably connected to the upper surface of the guide rail (1-8). Two L-shaped mounting brackets are rotatably arranged on the lower surface of the slide plate (1-82). Pulleys (1-83) are rotatably arranged at both ends of the mounting brackets. The pulleys (1-83) slide in the guide groove (1-81). A repair mechanism (3) is provided on the slide plate (1-82). It also includes a walking motor (1-84) fixedly mounted on one side of the slide plate (1-82), and a walking wheel (1-85) is coaxially fixedly mounted on the motor shaft of the walking motor (1-84), and the walking wheel (1-85) is in close contact with the upper surface of the guide rail (1-8). The repair mechanism (3) includes a slide (3-1) slidably connected to the slide plate (1-82), a lead screw (3-2) rotatably disposed in the middle of the slide (3-1), a slider (3-3) slidably connected on the slide (3-1), the slider (3-3) being fixedly connected to the slide plate (1-82), the slider (3-3) being threadedly connected to the lead screw (3-2), a lead screw motor (3-4) being fixedly disposed on the side of the slide (3-1) away from the carbon fiber gas cylinder (100), the motor shaft of the lead screw motor (3-4) being coaxially fixedly disposed with the lead screw (3-2), and a repair unit (3-5) for repairing carbon fiber composite materials being fixedly disposed at the other end of the slide (3-1). The repair unit (3-5) includes a bracket (3-51) fixedly installed on one side of the slide (3-1). A pressure roller (3-52) and an electric clamp (3-53) are fixedly installed at both ends of the bracket (3-51). Carbon fiber cloth (3-54) is wrapped around the outside of the pressure roller (3-52). One end of the carbon fiber cloth (3-54) is movably connected to the outer wall of the pressure roller (3-52), and the other end is wrapped around the outside of the pressure roller (3-52) and movably connected to the electric clamp (3-53). The bracket (3-51) is fixedly equipped with a flame gun (3-55) and a nozzle (3-56) for spraying epoxy resin adhesive on the side near the pressure roller (3-52). The outlet ends of the flame gun (3-55) and the nozzle (3-56) are both facing the carbon fiber gas cylinder (100).

2. The carbon fiber composite material defect repair equipment according to claim 1, characterized in that, The clamping mechanism (2) includes a movable plate (2-1) fixedly connected to the movable block. An annular base plate (2-2) is rotatably disposed in the middle of one side of the movable plate (2-1). Several grippers (2-3) are rotatably disposed on the side of the base plate (2-2) away from the movable plate (2-1). An annular adjusting plate (2-4) is disposed on one side of the base plate (2-2). The adjusting plate (2-4) is coaxial with the base plate (2-2). Several connecting rods (2-5) are rotatably disposed on the adjusting plate (2-4). Each connecting rod (2-5) is rotatably connected to the middle of one of the grippers (2-3). It also includes an electric push rod (2-6) arranged in an array on the outside of the adjustment plate (2-4), the fixed end of the electric push rod (2-6) being fixedly connected to the side wall of the adjustment plate (2-4), and the movable end of the electric push rod (2-6) being fixedly connected to the base plate (2-2).

3. The carbon fiber composite material defect repair equipment according to claim 2, characterized in that, A plurality of teeth (2-7) are arranged in an array on the outer wall of the base plate (2-2). A drive motor (2-8) is fixedly installed at the upper end of the moving plate (2-1). A drive gear (2-9) is fixedly installed coaxially on the motor shaft of the drive motor (2-8). The drive gear (2-9) meshes with the teeth (2-7).

4. The carbon fiber composite material defect repair equipment according to claim 3, characterized in that, The inflation channel (1-6) includes an inflation pipe (1-61) fixedly disposed in the middle of the movable plate (2-1). The inflation pipe (1-61) is coaxial with the base plate (2-2). One end of the air outlet of the inflation pipe (1-61) extends to the side close to the adjusting plate (2-4). The other end of the inflation tube (1-61) is connected to an air pump via an air pipe, and also includes a pressure gauge (1-62) installed on the inflation tube (1-61).

5. The carbon fiber composite material defect repair device according to claim 1, characterized in that, A tailstock (1-9) is fixedly installed at one end of the base frame (1) away from the clamping mechanism (2). A secondary push rod (1-10) is fixedly installed on the tailstock (1-9). The secondary push rod (1-10) is coaxial with the carbon fiber gas cylinder (100). An extrusion plate is rotatably installed at the movable end of the secondary push rod (1-10).

6. The carbon fiber composite material defect repair device according to claim 1, characterized in that, The support mechanism (1-1) includes a lifting plate (1-2) disposed below the channel. A lifting rod (1-3) is fixedly disposed on the lower surface of the lifting plate (1-2). A support frame for supporting the carbon fiber gas cylinder (100) is fixedly disposed on the upper surface of the lifting plate (1-2). A roller (1-4) is rotatably disposed on the support frame. When the carbon fiber gas cylinder (100) is placed on the support frame, the roller (1-4) is in contact with the cylinder body of the carbon fiber gas cylinder (100).

7. A repair method based on the carbon fiber composite material defect repair device according to any one of claims 1-6, comprising the following steps: S1 Grinding: Grinding to remove the carbon fiber layer from defective areas of the carbon fiber gas cylinder; S2 inflation: High-pressure gas at a certain pressure is injected into the gas cylinder; S3 Baking: High-temperature flame baking is applied to the defective areas on the surface of the carbon fiber cylinder. S4 Inspection: Visually inspect or use professional tools to inspect for defects in carbon fiber gas cylinders; S5 Glue Application: After the surface temperature of the carbon fiber cylinder has decreased, apply epoxy resin glue to the defective areas on the surface of the carbon fiber cylinder. S6 Repair: Cut the corresponding carbon fiber cloth according to the angle, sequence, size and quantity of the carbon fiber layer removed in step S1, and lay the cut carbon fiber cloth according to the structure and direction.

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