Repair equipment and method for carbon fiber composite product

Abstract

The invention discloses repairing equipment and method for a carbon fiber composite material product, and relates to the technical field of composite material product repairing. A shaft rod is rotationally embedded in the middle of the bottom end of a top disc, an elastic head is installed at the bottom end of a threaded rod, and a threaded ring is installed on the outer side of the threaded rod through a thread; a sliding ring is slidably mounted at the position, located at the bottom of the threaded ring, of the outer side of the threaded rod, and the position, located at the bottom of the threaded ring, of the outer side of the threaded rod is slidably provided with the sliding ring. The compatibility and the connection stability among the bonding interface glue spraying and smearing work, the repairing bonding surface polishing and cleaning work and the repairing bonding surface sand blasting and coarsening work are improved, and the smearing uniformity of the bonding interface glue, the coarsening balance of the repairing bonding surface and the cleanliness of the repairing bonding surface are improved; the carbon fiber composite material to be repaired and the carbon fiber cured hard sheet are combined more stably and firmly, and the repairing strength is fully guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of composite material product repair, in particular to a repair device and method for a carbon fiber composite material product. Background Art

[0002] Carbon fiber composite products are interlayered. In the use environment, cracks are prone to occur at stress locations or bonding locations, which require corresponding repairs using adhesives and carbon fiber prepregs. The China Patent Network discloses an injection molding device for a plastic pipe clamp, with application number 202010571173.4. The device can keep the melt flow state consistent in the front and rear injection molding processes at the transition section, avoiding flow marks and improving the spraying effect of the adhesive at the bonding interface.

[0003] However, the current repair equipment has poor regularity of the repair surface, and the fit between the equipment and the repair surface is insufficient, resulting in poor compatibility and adaptability between the bonding interface glue spraying work, the repair surface grinding and cleaning work, and the repair surface sandblasting and roughening work, which cannot guarantee the repair strength and easily leads to ineffective repair. Summary of the invention

[0004] The present invention provides a repair device for carbon fiber composite material products, which can effectively solve the problems of the current repair equipment proposed in the above background technology, such as poor regularity of the repair joint surface, insufficient fit between the equipment and the repair joint surface, resulting in poor compatibility and adaptability between the adhesive interface glue spraying work, the repair joint surface grinding and cleaning work, and the repair joint surface sandblasting and roughening work, and the inability to guarantee the repair strength, which easily leads to the problem of invalid repair.

[0005] To achieve the above object, the present invention provides the following technical solution: a repair device for a carbon fiber composite material product, comprising a top plate, a concave seat is installed at the bottom of the top plate, and a shaping spraying mechanism is installed at the top of the concave seat at the bottom of the top plate;

[0006] The shaping spraying mechanism comprises a shaft;

[0007] A shaft is embedded and rotatably mounted in the middle of the bottom end of the top plate, a threaded rod is mounted at the bottom end of the shaft, an elastic head is mounted at the bottom end of the threaded rod, a threaded ring is mounted on the outside of the threaded rod through a thread, a slip ring is slidably mounted at the bottom of the threaded ring on the outside of the threaded rod, a compression spring is sleeved at the position between the threaded ring and the slip ring on the outside of the threaded rod, a plurality of hollow arms are mounted on the outer curved surface of the slip ring for rotation at equal angles along the circumferential direction, a transmission seat is mounted at the bottom of the hollow arm, a hollow gear is symmetrically mounted on the inner side of the transmission seat for rotation, a mounting head is mounted at the bottom of the hollow gear, branch pipes are mounted on the mounting head and the ends of the hollow arm, and the mounting head and the hollow arm are connected to the hollow gear through the branch pipe;

[0008] A cavity is provided inside the mounting head, and a shaft tube is embedded and rotatably mounted in the middle of the bottom end of the cavity. The hollow arm, the transmission seat, the hollow gear, the mounting head, the branch pipe, the cavity and the shaft tube together constitute a linkage adjustment structure. The linkage adjustment structure is provided with five groups along the circumferential direction of the slip ring, and the bottoms of the five groups of linkage adjustment structures are respectively installed with a grinding pen, a sandblasting head, a wiping head, a negative pressure head and an injection molding head;

[0009] A mounting plate is rotatably mounted on the middle part of the outer curved surface of the shaft rod, and a plurality of driving screws are rotatably mounted on the bottom of the outer curved surface of the mounting plate at equal angles in the circumferential direction. A threaded head is threadedly mounted on the outside of the driving screw, and a sliding ring is slidably mounted on the outside of the driving screw near one side of the mounting plate. A spring is sleeved on the outside of the driving screw at a position between the threaded head and the sliding ring, and gas springs are both mounted on the bottom of the threaded head and the outer curved surface of the sliding ring. A pressure block is mounted on the end of the gas spring at the bottom of the threaded head, and a gear ring is rotatably mounted on the top of the outer curved surface of the mounting plate, and a gear plate is mounted at the position of the outer curved surface of the driving screw corresponding to the gear ring. A limiting ring is slidably mounted on the outside of the threaded rod at the bottom of the slip ring, and a plurality of slide rails are mounted on the outer curved surface of the slip ring at equal angles in the circumferential direction.

[0010] Preferably, a slide bar is embedded and slidably installed on the top of the side end surface of the concave seat, a transverse screw is embedded and rotatably installed at a position corresponding to the slide bar on one side of the side end surface of the concave seat, a longitudinal screw is installed on one side of the side end surface of the slide bar, a support rod is installed on the other side of the side end surface of the slide bar, a mouth frame is slidably installed on the outside of the longitudinal screw and the support rod, a threaded sleeve is embedded and rotatably installed at a position corresponding to the longitudinal screw on one side of the side end surface of the mouth frame, a vertical screw is rotatably installed at a corner at the top of the mouth frame, and the vertical screw is connected to the top plate through a thread, and a guide rod is installed at the remaining corner at the top of the mouth frame, and the guide rod is slidably connected to the top plate.

[0011] Preferably, a laser lamp is embedded and installed in the middle of the elastic head and the bottom end of the pressure block, the input end of the laser lamp is electrically connected to the output end of the external power supply, a pointer is installed in the middle of the side end face of the hollow gear, and an angle plate is embedded and installed at the position of the side end face of the transmission seat corresponding to the hollow gear, the limit ring is slidably connected to the transmission seat through a slide rail, and the transmission seat is connected to the sliding ring through a gas spring.

[0012] Preferably, the top ends of the grinding pen, wiping head and negative pressure head are all rotatably connected to the corresponding mounting heads, the top end of the sandblasting head is fixedly connected to the mounting head, a screw is rotatably installed on the top of the outer curved surface of the injection molding head, and the injection molding head is connected to the mounting head through the screw, the sandblasting head, wiping head, negative pressure head and injection molding head are all connected to the cavity through a shaft tube, the top end of the injection molding head is slidably connected to the shaft tube, and the grinding pen, sandblasting head, wiping head, negative pressure head and injection molding head are arranged in sequence at equal angles along the rotation direction of the shaft.

[0013] Preferably, a deflection wheel is rotatably installed inside one of the cavities, the top end of the grinding pen is connected to the deflection wheel through a shaft tube, an air jet is provided at the bottom end of the mounting head located on one side of the grinding pen, grooves are provided on both sides of the outer curved surface of the cavity corresponding to the air jet and the branch pipe positions, a sponge cover is sleeved on the end of the wiping head, a scraping ear is installed at the bottom end of the mounting head located outside the sponge cover, and a plurality of filters are evenly and equidistantly embedded on the outer curved surface of the negative pressure head.

[0014] Preferably, a plurality of sandblasting ports are evenly and equidistantly provided at the bottom and the bottom end of the outer curved surface of the sandblasting head, and a telescopic sleeve is installed at the bottom end of the mounting head at a position outside the sandblasting head.

[0015] Preferably, a directional transmission mechanism is installed on the top of the concave seat, and the directional transmission mechanism includes a transmission box;

[0016] A transmission box is installed in the middle of the top of the top plate, a rotating wheel is installed at the top of the shaft rod located at the internal position of the transmission box, and the rotating wheel is rotatably connected to the transmission box, an exhaust pipe is installed on one side of the bottom end of the transmission box, material storage boxes are symmetrically installed on both sides of the top of the top plate, a boost pipe is installed on one side of the top of the material storage box, on-off valves are installed at the positions of the boost pipes on both sides of the top of the transmission box, a piston plate is slidably installed inside the material storage box, a telescopic tube is installed on one side of the top of the piston plate, a cleaning tube is installed in the middle of the bottom end of one of the material storage boxes, and a glue injection tube is installed in the middle of the bottom end of the other material storage box;

[0017] A sand storage bucket is installed on one side of the top of the top plate, a sand funnel is installed on the bottom of the inner wall of the sand storage bucket, a sand outlet is opened in the middle of the bottom end of the sand storage bucket, a bolt is installed through thread embedding at the position of the sand outlet on the outer curved surface of the top plate corresponding to the sand outlet, a sand shooting pipe is installed at the end of the sand outlet, and an air jet pipe is installed at one side of the top of the transmission box corresponding to the position of the sand storage bucket;

[0018] A return box is installed on the other side of the top of the top plate, an exhaust pipe is installed in the middle of the top of the return box, an air pump is installed at the top of the top plate between the transmission box and the return box, air connecting pipes are installed at one side of the top of the transmission box near the air pump and in the middle of the bottom of the return box, the return box is connected to the air outlet of the air pump through the air connecting pipe, and the return box is connected to the air inlet of the air pump through the air connecting pipe;

[0019] A number of ring boxes are evenly and equidistantly embedded and installed on the top and bottom of the outer curved surface of the shaft rod, a sealing ring is embedded and rotatably installed on the outer curved surface of the ring box, and the exhaust pipe, cleaning pipe, glue injection pipe, sand shooting pipe and exhaust pipe are all connected to the ring box through sealing rings, a connecting pipe is installed on the inner wall of the ring box, and the two ends of the connecting pipe are respectively connected to the ring boxes on both sides of the mounting plate, a number of connecting cavities are opened at equal angles along the circumferential direction inside the slip ring, a bellows is embedded and installed on the outer wall of the connecting cavity, and the connecting cavity is connected to the ring box through the bellows, a short tube is installed in the middle of the end face on the other side of the hollow gear, and the cavity and the inner cavity of the hollow arm are connected to the short tube through a branch pipe, and the inner cavity of the hollow arm is directly connected to the connecting cavity.

[0020] Preferably, a filling valve is embedded and installed at the position of the telescopic tube corresponding to the top of the storage box, and the end of the telescopic tube is connected to the filling valve, a vertical cylinder is symmetrically installed on the outer curved surface of the top plate, a partition is slidably installed inside the vertical cylinder, and a push rod is installed in the middle of the top of the partition and the piston plate, a connecting plate is installed on the top of the push rod, and an air valve is installed in the middle of the bottom end of the vertical cylinder.

[0021] Preferably, a sealed drawer is slidably embedded in the top of the side end surface of the return box, a filter box is slidably embedded in the bottom of the side end surface of the return box, a filter plate is embedded in the middle of the bottom end of the sealed drawer and in the interior of the return box between the filter box and the sealed drawer, and the interior of the filter box is filled with activated carbon, filter sponge and desiccant in sequence.

[0022] Preferably, a method for repairing a carbon fiber composite material product repair device comprises the following steps:

[0023] S1. Use carbon fiber prepreg, high temperature carbon fiber prepreg of high temperature bismaleimide resin, or high temperature cyanate quartz fiber prepreg to bake and form a hardened sheet;

[0024] S2. Use a grinding pen to polish the damaged or cracked parts to be repaired to remove the damaged fibers, then sandblast and roughen the carbon fiber substrate to be repaired, blow off the dust, and then wipe it clean with a solvent. The baked and cured carbon fiber hard sheet also needs to be sandblasted and roughened, and the dust is blown off and then wiped clean with a solvent;

[0025] S3. Use DP460 glue to repair general carbon fiber composite products, use DP760 glue to repair high-temperature fiber composite products of high-temperature bismaleimide resin and high-temperature cyanate quartz fiber composite products, and add 3%-10% short fibers according to the weight ratio, and mix the glue and fibers evenly;

[0026] S4. Perform a trial pasting of the carbon fiber hard sheet. After confirming that the shape of the carbon fiber hard sheet is consistent with the repaired part, evenly spray the prepared DP460 glue mixed with carbon fiber short fibers on the part of the carbon fiber composite material product to be repaired and the front and back sides of the carbon fiber hard sheet;

[0027] S5. Attach the carbon fiber hard sheet to the product to be repaired, press it tightly and place it steadily. After standing at room temperature for 60 minutes, put it into the oven for baking at 80℃ / 60 minutes. After the product is baked, smooth the surface of the product to complete the repair work.

[0028] 1. A shaping spraying mechanism is provided. Through the coordination of the hollow arm, the transmission seat, the hollow gear, the mounting head, the branch pipe, the cavity and the shaft tube, a linkage adjustment structure can be constructed. The positions of the grinding pen, the sandblasting head, the wiping head, the negative pressure head and the injection head can be synchronously regulated to make the repaired joint surface more regular, greatly improve the fit between the equipment and the repaired joint surface, effectively improve the compatibility and connection stability between the spraying and coating of the bonding interface glue, the grinding and cleaning of the repaired joint surface and the sandblasting and roughening of the repaired joint surface, and simultaneously improve the coating uniformity of the bonding interface glue, the roughening balance of the repaired joint surface and the cleanliness of the repaired joint surface, so that the combination between the carbon fiber composite material to be repaired and the carbon fiber cured hard sheet is more stable and reliable, fully guaranteeing the repair strength, so that the reliability and effectiveness of the repair work can be greatly enhanced.

[0029] 2. The position of the transmission seat can be conveniently adjusted by cooperating with the shaft, threaded rod, threaded ring, slip ring, compression spring, limit ring and slide rail. In addition, the synchronous limiting effect of the mounting plate, driving screw, threaded head, slip ring, spring, gear ring and gear plate can make full use of the elastic pressure of the compression spring and spring to accurately adjust the end position of the grinding pen, sandblasting head, wiping head, negative pressure head and injection head, improve the controllability of the repair surface finishing work, greatly improve the processing efficiency and accuracy of the repair surface, realize the compatibility and adaptability of the equipment to different damage conditions of different carbon fiber composite materials to be repaired, and indirectly improve the repair effect of the repair work while expanding the effective adaptability of the device;

[0030] In addition, with the indicating function of the angle dial and pointer, the depression angle of the repair joint surface can be conveniently determined, which greatly enhances the convenience and accuracy of trimming the carbon fiber cured hard sheet, and indirectly improves the repair efficiency. Through the coordination of the elastic head, gas spring and pressure block, coupled with the indicating function of the laser light and the limiting adjustment function of the slide bar, support rod, opening frame, transverse screw, longitudinal screw, vertical screw, guide rod and threaded sleeve, the equipment can be quickly aligned and corrected, and the carbon fiber composite material to be repaired can be auxiliary limited and fixed to enhance the stability of the repair work.

[0031] 3. Through the coordination of the air jet, slotting and deflection wheel, the working performance of the grinding pen can be fully utilized, the grinding and removal effect of damaged fibers can be improved, and simultaneous cooling and dust cleaning can be achieved, the grinding accuracy can be enhanced and the service life of the grinding pen can be increased. Through the coordination of the telescopic sleeve and the sandblasting port, the sandblasting roughening surface can be accurately controlled, while saving sand and gravel, the sandblasting roughening accuracy can be effectively improved to avoid secondary damage to the carbon fiber composite material to be repaired. The cleaning effect can be further enhanced by cooperating with the sponge sleeve and the scraper ear. The filter can ensure the stability of the device operation and avoid blockage. The screw rod can further improve the application effect of the bonding interface glue, saving adhesive and making it more evenly applied.

[0032] 4. A directional transmission mechanism is provided. Through the cooperation of a ring box, a sealing ring, a connecting pipe, a connecting cavity, a bellows and a short pipe, five sets of independent fluid synchronous transmission paths can be constructed. In cooperation with an exhaust pipe, a boost pipe, an air jet pipe, a cleaning pipe, a glue injection pipe, a sand outlet, an exhaust pipe, an air connection pipe and a sand-shooting pipe, a complete fluid transmission path can be constructed to transform and utilize the air flow pressure provided by the air pump. Only one power source is required to realize the spraying and coating of the bonding interface glue, the grinding and cleaning of the repaired joint surface and the sandblasting and coarsening of the repaired joint surface, so as to realize the multiple utilization of the air flow, greatly improve the effective utilization rate of energy, and make the equipment more energy-saving and efficient. In addition, the flow limiting effect of the bolts and the on-off valve can realize the rapid conversion of the spraying and coating of the bonding interface glue, the grinding and cleaning of the repaired joint surface and the sandblasting and coarsening of the repaired joint surface, thereby improving the continuity and reliability of the equipment operation.

[0033] Through the cooperation of the transmission box and the rotary wheel, the grinding pen, sandblasting head, wiping head, negative pressure head and injection head can be given deflection driving force, thereby enhancing the reliability and efficiency of the bonding interface glue spraying and coating work, the repair joint surface grinding and cleaning work, and the sandblasting roughening work of the repair joint surface. Through the cooperation of the storage box, piston plate and telescopic tube, a stable storage space can be provided. Equipped with a filling valve, a vertical cylinder, a partition, a push rod, a connecting plate and an air valve, the cleaning solvent and the bonding interface glue can be quickly replenished and their discharge speed can be conveniently regulated. Through the cooperation of the sand storage barrel and the sand funnel, the stability of sand and gravel feeding can be greatly improved. Through the cooperation of the return box, the sealing drawer, the filter box and the filter plate, the airflow can be filtered to improve the smoothness of the airflow flow, and the sand and gravel dust can be collected centrally to improve the environmental protection of the repair operation.

[0034] 5. By independently making carbon fiber cured hard sheets in advance, it can be applied to batch and large-volume product repairs, and the repair method process is stable, the repair effect is good, and the strength is reliable. Using DP460 glue and DP760 glue as the bonding interface glue to bond the hardened sheet and the repaired product can achieve ultra-lightweight weight and excellent heat insulation effect to meet user requirements. While ensuring the repair strength, because the entire repair work can be visually inspected, any displacement of the carbon fiber hardened sheet can be corrected in time to prevent the occurrence of final repair failure.

[0035] In summary, the repair equipment and method for carbon fiber composite products can greatly enhance the fit between the equipment and the carbon fiber composite material to be repaired, and simultaneously improve the stability and reliability of the bonding interface glue spraying work, the repair joint surface grinding and cleaning work, and the repair joint surface sandblasting roughening work, and can realize the rapid trimming and precise alignment of the carbon fiber cured hard sheet, while ensuring the repair strength, expanding the scope and adaptability of the repair work. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0037] In the attached picture:

[0038] Figure 1 It is a schematic diagram of the structure of the present invention;

[0039] Figure 2 It is a schematic diagram of the installation structure of the glue injection tube of the present invention;

[0040] Figure 3 It is a schematic diagram of the shaft rod installation structure of the present invention;

[0041] Figure 4 It is a structural schematic diagram of the shaping spraying mechanism of the present invention;

[0042] Figure 5 It is a schematic diagram of the sliding ring installation structure of the present invention;

[0043] Figure 6 It is a schematic diagram of the compression spring installation structure of the present invention;

[0044] Figure 7 It is a schematic diagram of the installation structure of the limit ring of the present invention;

[0045] Figure 8 It is a schematic diagram of the shaft tube installation structure of the present invention;

[0046] Fig. 9 It is a structural schematic diagram of the directional transmission mechanism of the present invention;

[0047] Fig.10 is a flow chart of steps of a method for repairing a carbon fiber composite material product of the present invention;

[0048] Numbers in the figure: 100, top plate; 101, concave seat; 102, slide bar; 103, support rod; 104, opening frame; 105, transverse screw; 106, longitudinal screw; 107, threaded sleeve; 108, vertical screw; 109, guide rod;

[0049] 200, shaping spraying mechanism; 201, shaft; 202, threaded rod; 203, threaded ring; 204, slip ring; 205, compression spring; 206, elastic head; 207, hollow arm; 208, transmission seat; 209, hollow gear; 210, mounting head; 211, branch pipe; 212, cavity; 213, shaft tube; 214, grinding pen; 215, sandblasting head; 216, wiping head; 217, negative pressure head; 218, injection head; 219, mounting plate; 220, driving screw; 221, threaded head; 222, slip ring; 223, spring; 224, gas spring; 225, pressing block; 226, gear ring; 227, gear plate; 228, limit ring; 229, slide rail;

[0050] 2061, laser light; 2091, pointer; 2092, angle plate; 2141, jet nozzle; 2142, slot; 2143, deflection wheel; 2151, telescopic sleeve; 2152, sand-shooting port; 2161, sponge sleeve; 2162, scraper ear; 2171, filter screen; 2181, screw rod;

[0051] 300, directional transmission mechanism; 301, transmission box; 302, rotating wheel; 303, exhaust pipe; 304, material storage box; 305, boost pipe; 306, piston plate; 307, telescopic pipe; 308, cleaning pipe; 309, glue injection pipe; 310, sand storage bucket; 311, sand funnel; 312, sand outlet; 313, bolt; 314, sand shooting pipe; 315, jet pipe; 316, return box; 317, exhaust pipe; 318, air pump; 319, air connection pipe; 320, ring box; 321, sealing ring; 322, connecting pipe; 323, connecting cavity; 324, bellows; 325, short pipe; 326, on-off valve;

[0052] 3041, stuffing valve; 3042, vertical cylinder; 3043, partition; 3044, push rod; 3045, connecting plate; 3046, air valve; 3161, sealing drawer; 3162, filter box; 3163, filter plate. DETAILED DESCRIPTION

[0053] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0054] Example: Figure 1-9 As shown, the present invention provides a technical solution, a repair device for a carbon fiber composite material product, comprising a top plate 100, a concave seat 101 is installed at the bottom of the top plate 100, a slide bar 102 is embedded and slidably installed at the top of the side end surface of the concave seat 101, a transverse screw 105 is embedded and rotatably installed at the position of the slide bar 102 on one side of the side end surface of the concave seat 101, a longitudinal screw 106 is installed on one side of the side end surface of the slide bar 102, and a support rod 103 is installed on the other side of the side end surface of the slide bar 102, and the longitudinal screw 106 and the outer side of the support rod 103 slide A mouth frame 104 is installed, and a threaded sleeve 107 is embedded and rotatably installed at the position of the longitudinal screw 106 on one side of the side end surface of the mouth frame 104. A vertical screw 108 is rotatably installed at a corner of the top of the mouth frame 104, and the vertical screw 108 is connected to the top plate 100 through a thread. A guide rod 109 is installed at the remaining corner of the top of the mouth frame 104, and the guide rod 109 is slidably connected to the top plate 100 for alignment correction. A shaping spraying mechanism 200 is installed at the bottom of the top plate 100 at the top position of the concave seat 101;

[0055] The shaping spraying mechanism 200 includes a shaft 201, a threaded rod 202, a threaded ring 203, a sliding ring 204, a compression spring 205, an elastic head 206, a hollow arm 207, a transmission seat 208, a hollow gear 209, a mounting head 210, a branch pipe 211, a cavity 212, a shaft tube 213, a grinding pen 214, a sandblasting head 215, a wiping head 216, a negative pressure head 217, an injection head 218, a mounting plate 219, a driving screw 220, a threaded head 221, a sliding ring 222, a spring 223, a gas spring 224, a pressing block 225, a gear ring 226, a toothed disc 227, a limiting ring 228 and a slide rail 229;

[0056] A shaft rod 201 is embedded and rotatably mounted in the middle of the bottom end of the top plate 100, a threaded rod 202 is mounted at the bottom end of the shaft rod 201, an elastic head 206 is mounted at the bottom end of the threaded rod 202, a threaded ring 203 is mounted on the outer side of the threaded rod 202 through a thread, a slip ring 204 is slidably mounted at the bottom position of the threaded ring 203 on the outer side of the threaded rod 202, a compression spring 205 is sleeved at the position between the threaded ring 203 and the slip ring 204 on the outer side of the threaded rod 202, a plurality of hollow arms 207 are mounted on the outer curved surface of the slip ring 204 for equiangular rotation along the circumferential direction, a transmission seat 208 is mounted at the bottom of the hollow arm 207, a hollow gear 209 is symmetrically rotatably mounted on the inner side of the transmission seat 208, a mounting head 210 is mounted at the bottom of the hollow gear 209, a branch pipe 211 is mounted on the ends of the mounting head 210 and the hollow arm 207, and the mounting head 210 and the hollow arm 207 are connected to the hollow gear 209 through the branch pipe 211;

[0057] A cavity 212 is provided inside the mounting head 210, and a shaft tube 213 is embedded and rotatably mounted in the middle of the bottom end of the cavity 212. The hollow arm 207, the transmission seat 208, the hollow gear 209, the mounting head 210, the branch pipe 211, the cavity 212 and the shaft tube 213 together constitute a linkage adjustment structure. The linkage adjustment structure is provided in five groups along the circumferential direction of the slip ring 204, and the bottoms of the five groups of linkage adjustment structures are respectively installed with a grinding pen 214, a sandblasting head 215, a wiping head 216, a negative pressure head 217 and an injection head 218;

[0058] A plurality of sandblasting ports 2152 are evenly and equidistantly provided at the bottom and the bottom end of the outer curved surface of the sandblasting head 215. A telescopic sleeve 2151 is installed at the bottom end of the mounting head 210 at the outer side of the sandblasting head 215 to improve the sandblasting roughening effect. A deflection wheel 2143 is rotatably installed inside a cavity 212. The top end of the grinding pen 214 is connected to the deflection wheel 2143 through the shaft tube 213. An air jet 2141 is provided at the bottom end of the mounting head 210 at one side of the grinding pen 214. Slots 2142 are provided at the positions of the air jet 2141 and the branch pipe 211 on both sides of the outer curved surface of the cavity 212. A sponge sleeve 2161 is sleeved at the end of the wiping head 216. A scraping ear 2162 is installed at the bottom end of the mounting head 210 at the outer side of the sponge sleeve 2161. A plurality of filter screens 2171 are evenly and equidistantly embedded in the outer curved surface of the negative pressure head 217 to improve the smoothness and stability of the equipment operation.

[0059] The top ends of the grinding pen 214, the wiping head 216 and the negative pressure head 217 are all rotatably connected to the corresponding mounting head 210, the top end of the sandblasting head 215 is fixedly connected to the mounting head 210, a screw 2181 is rotatably installed on the top of the outer curved surface of the injection head 218, and the injection head 218 is connected to the mounting head 210 through the screw 2181, the sandblasting head 215, the wiping head 216, the negative pressure head 217 and the injection head 218 are all connected to the cavity 212 through the shaft tube 213, and the top end of the injection head 218 is slidably connected to the shaft tube 213, and the grinding pen 214, the sandblasting head 215, the wiping head 216, the negative pressure head 217 and the injection head 218 are arranged in sequence at equal angles along the rotation direction of the shaft 201, so as to improve the fit and compatibility of the equipment;

[0060] A mounting plate 219 is rotatably mounted on the middle of the outer curved surface of the shaft 201, and a plurality of driving screws 220 are rotatably mounted at equal angles along the circumferential direction on the bottom of the outer curved surface of the mounting plate 219, a threaded head 221 is threadedly mounted on the outer side of the driving screw 220, a sliding ring 222 is slidably mounted on the outer side of the driving screw 220 near one side of the mounting plate 219, a spring 223 is sleeved on the outer side of the driving screw 220 between the threaded head 221 and the sliding ring 222, gas springs 224 are mounted on the bottom of the outer curved surfaces of the threaded head 221 and the sliding ring 222, a pressing block 225 is mounted on the end of the gas spring 224 at the bottom of the threaded head 221, and a gear ring 226 is rotatably mounted on the top of the outer curved surface of the mounting plate 219;

[0061] A toothed disk 227 is installed at the position of the gear ring 226 on the outer curved surface of the driving screw 220, a limit ring 228 is slidably installed at the bottom of the slip ring 204 on the outer side of the threaded rod 202, and a plurality of slide rails 229 are installed at equal angles along the circumferential direction on the outer curved surface of the slip ring 204. A laser lamp 2061 is embedded in the middle of the bottom end of the elastic head 206 and the pressure block 225, and the input end of the laser lamp 2061 is electrically connected to the output end of the external power supply. A pointer 2091 is installed in the middle of the side end surface of the hollow gear 209, and an angle disk 2092 is embedded in the position of the side end surface of the transmission seat 208 corresponding to the hollow gear 209. The limit ring 228 is slidably connected to the transmission seat 208 through the slide rail 229, and the transmission seat 208 is connected to the slide ring 222 through the gas spring 224, so as to improve the alignment accuracy and convenience.

[0062] A directional transmission mechanism 300 is installed on the top of the concave seat 101, and the directional transmission mechanism 300 includes a transmission box 301, a rotating wheel 302, an exhaust pipe 303, a material storage box 304, a boost pipe 305, a piston plate 306, a telescopic pipe 307, a cleaning pipe 308, a glue injection pipe 309, a sand storage bucket 310, a sand funnel 311, a sand outlet 312, a bolt 313, a sand shooting pipe 314, an air injection pipe 315, a material return box 316, an exhaust pipe 317, an air pump 318, an air connection pipe 319, a ring box 320, a sealing ring 321, a connecting pipe 322, a connecting cavity 323, a bellows 324, a short pipe 325 and an on-off valve 326;

[0063] A transmission box 301 is installed in the middle of the top of the top plate 100, a rotating wheel 302 is installed at the top of the shaft 201 located inside the transmission box 301, and the rotating wheel 302 is rotatably connected to the transmission box 301, an exhaust pipe 303 is installed on one side of the bottom end of the transmission box 301, and a material storage box 304 is symmetrically installed on both sides of the top of the top plate 100, a boost pipe 305 is installed on one side of the top of the material storage box 304, an on-off valve 326 is installed at the position of the boost pipe 305 on both sides of the top of the transmission box 301, and a piston plate 306 is slidably installed inside the material storage box 304;

[0064] A telescopic tube 307 is installed on one side of the top of the piston plate 306, a stuffing valve 3041 is embedded and installed at the position of the telescopic tube 307 at the top of the material storage box 304, and the end of the telescopic tube 307 is connected to the stuffing valve 3041, a vertical cylinder 3042 is symmetrically installed on the outer curved surface of the top plate 100, a partition 3043 is slidably installed inside the vertical cylinder 3042, a push rod 3044 is installed in the middle of the top of the partition 3043 and the piston plate 306, a connecting plate 3045 is installed on the top of the push rod 3044, and an air valve 3046 is installed in the middle of the bottom end of the vertical cylinder 3042 to convert and utilize the air flow pressure, a cleaning tube 308 is installed in the middle of the bottom end of one material storage box 304, and a glue injection tube 309 is installed in the middle of the bottom end of the other material storage box 304;

[0065] A sand storage bucket 310 is installed on one side of the top of the top plate 100, a sand funnel 311 is installed on the bottom of the inner wall of the sand storage bucket 310, a sand outlet 312 is opened in the middle of the bottom end of the sand storage bucket 310, a bolt 313 is installed through thread embedding at the position of the sand outlet 312 on the outer curved surface of the top plate 100, a sand injection pipe 314 is installed at the end of the sand outlet 312, and an air jet pipe 315 is installed at the position of the sand storage bucket 310 on one side of the top of the transmission box 301;

[0066] A return box 316 is installed on the other side of the top of the top plate 100, and a sealed drawer 3161 is embedded and slidably installed on the top of the side end surface of the return box 316, and a filter box 3162 is embedded and slidably installed on the bottom of the side end surface of the return box 316. A filter plate 3163 is embedded and installed in the middle of the bottom end of the sealed drawer 3161 and in the return box 316 between the filter box 3162 and the sealed drawer 3161. The inside of the filter box 3162 is filled with activated carbon, filter sponge and desiccant in order to Waste materials are collected in a centralized manner, an exhaust pipe 317 is installed in the middle of the top of the return box 316, an air pump 318 is installed at the top of the top plate 100 between the transmission box 301 and the return box 316, an air connection pipe 319 is installed at one side of the top of the transmission box 301 near the position of the air pump 318 and in the middle of the bottom of the return box 316, the return box 316 is connected to the air outlet of the air pump 318 through the air connection pipe 319, and the return box 316 is connected to the air inlet of the air pump 318 through the air connection pipe 319;

[0067] A plurality of ring boxes 320 are evenly and evenly embedded on the top and bottom of the outer curved surface of the shaft 201. A sealing ring 321 is embedded and rotatably installed on the outer curved surface of the ring box 320. The exhaust pipe 303, the cleaning pipe 308, the glue injection pipe 309, the sand-shooting pipe 314 and the exhaust pipe 317 are all connected to the ring box 320 through the sealing ring 321. A connecting pipe 322 is installed on the inner wall of the ring box 320, and the two ends of the connecting pipe 322 are respectively connected to the ring boxes 320 on both sides of the mounting plate 219. A plurality of connection cavities 323 are provided at equal angles along the circumferential direction inside the slip ring 204, a bellows 324 is embedded in the outer wall of the connection cavity 323, and the connection cavity 323 is connected to the ring box 320 through the bellows 324, a short tube 325 is installed in the middle of the end face on the other side of the hollow gear 209, and the cavity 212 and the inner cavity of the hollow arm 207 are connected to the short tube 325 through the branch pipe 211, and the inner cavity of the hollow arm 207 is directly connected to the connection cavity 323.

[0068] like Fig.10 As shown, a method for repairing a carbon fiber composite material product comprises the following steps:

[0069] S1. Use carbon fiber prepreg, high temperature carbon fiber prepreg of high temperature bismaleimide resin, or high temperature cyanate quartz fiber prepreg to bake and form a hardened sheet;

[0070] S2. The damaged part or cracked part to be repaired is polished with a grinding pen 214 to remove the damaged fibers, and then the carbon fiber substrate to be repaired is roughened by sandblasting, the dust is blown off, and then it is wiped clean with a solvent. The baked and cured carbon fiber hard sheet also needs to be roughened by sandblasting, the dust is blown off, and then it is wiped clean with a solvent;

[0071] S3. Use DP460 glue to repair general carbon fiber composite products, use DP760 glue to repair high-temperature fiber composite products of high-temperature bismaleimide resin and high-temperature cyanate quartz fiber composite products, and add 6% short fibers according to the weight ratio to mix the glue and fibers evenly;

[0072] S4. Perform a trial pasting of the carbon fiber hard sheet. After confirming that the shape of the carbon fiber hard sheet is consistent with the repaired part, evenly spray the prepared DP460 glue mixed with carbon fiber short fibers on the part of the carbon fiber composite material product to be repaired and the front and back sides of the carbon fiber hard sheet;

[0073] S5. Attach the carbon fiber hard sheet to the product to be repaired, press it tightly and place it steadily. After standing at room temperature for 60 minutes, put it into the oven for baking at 80℃ / 60 minutes. After the product is baked, smooth the surface of the product to complete the repair work.

[0074] The working principle and use process of the present invention: When the repairing equipment of the carbon fiber composite material product is actually used, the carbon fiber prepreg cloth 3K material is first baked and cured at 150°C / 50 minutes by using an external baking device. During the curing, the carbon fiber prepreg cloth 3K material can be cured in batches, and the carbon fiber prepreg cloth 3K material can be baked and cured using scraps or leftovers to save costs. By this method, a carbon fiber cured hard sheet is first made. If the composite material product to be repaired is a high-temperature fiber composite material product of a high-temperature bismaleimide resin, or a high-temperature cyanate quartz fiber composite material product, then the high-temperature carbon fiber of the high-temperature bismaleimide resin and the high-temperature cyanate quartz fiber are used to make the cured hard sheet;

[0075] Then, a solvent is injected into the storage box 304 connected to the cleaning tube 308 at the bottom through the filling valve 3041 via the telescopic tube 307. The solvent can be alcohol or other substances, which can be adjusted according to actual needs. According to the material of the composite material product to be repaired, DP460 glue or DP760 glue is mixed with short fibers and evenly prepared. Here, DP460 glue can maintain good performance at room temperature below 180°C, while DP760 glue can maintain good performance at room temperature and below 300°C. The solvent should be adjusted according to the material of the composite material product to be repaired. DP460 glue or DP760 glue is selected according to the demand, and 6% of short fibers should be added according to the weight ratio. The proportion of added fibers is determined by the location and severity of the repaired product. The proportion of added fibers is relatively high at the location with greater stress and serious cracking. Then, a mixture of DP460 glue and short fibers or a mixture of DP760 glue and short fibers is injected into another storage box 304 through another filling valve 3041. The mixture of DP460 glue and short fibers or the mixture of DP760 glue and short fibers is uniformly referred to as bonding interface glue below.

[0076] Then, the bolt 313 is turned to ensure that the sand outlet 312 is in a sealed state, the lid of the sand storage bucket 310 is opened, and sand and gravel are added into the sand storage bucket 310 and the lid of the sand storage bucket 310 is reset. The carbon fiber composite material to be repaired is placed inside the concave seat 101, so that the damaged part or cracked part to be repaired is located directly below the top plate 100, the laser light 2061 is turned on, and the threaded sleeve 107 and the transverse screw 105 are rotated in turn to drive the opening frame 104 to move, and the position of the elastic head 206 is adjusted according to the indication of the laser beam, so that the elastic head 206 is located directly above the center of the damaged part or cracked part to be repaired;

[0077] Then, the threaded ring 203 and the driving screw 220 are rotated alternately clockwise. When the threaded ring 203 rotates, it will move along the threaded rod 202, thereby compressing the compression spring 205. The compression spring 205 will squeeze the slip ring 204 to make the slip ring 204 slide along the threaded rod 202. Under the limit of the transmission seat 208, the hollow arm 207 will drive the hollow gear 209 to deflect, and the mounting head 210 will descend while deflecting. Under the transmission of the gear ring 226 and the toothed disc 227, the rotation of the driving screw 220 will drive each thread head 221 to move. The thread head 221 will press the slip ring 222 through the spring 223, causing the gas spring 224 on the slip ring 222 to press the transmission seat 208 under the drive of the slip ring 222, thereby limiting the deflection angle between each hollow arm 207 and the mounting head 210.

[0078] Here, the thread ring 203 is initially located at the top of the threaded rod 202, and the thread head 221 is initially located at the outermost end of the driving screw 220. After the above adjustment, the ends of the grinding pen 214, the sandblasting head 215, the wiping head 216, the negative pressure head 217 and the injection head 218 will be synchronously deflected and dropped under the limitation of the transmission seat 208, and the positions of the ends of the grinding pen 214, the sandblasting head 215, the wiping head 216, the negative pressure head 217 and the injection head 218 are synchronously adjusted and limited, so that the end of the grinding pen 214 is located below the elastic head 206 and just contacts the laser beam emitted by the laser lamp 2061 at the bottom of the elastic head 206;

[0079] Then, the vertical screw rod 108 is rotated to drive the top plate 100 to press down under the limit of the guide rod 109, and the position of the end of the grinding pen 214 is further adjusted to make the end of the grinding pen 214 contact with the carbon fiber composite material to be repaired, and then the thread ring 203 is rotated again to compress the compression spring 205, so that the end of the grinding pen 214 presses against the carbon fiber composite material to be repaired under the pressure of the compression spring 205 and the spring 223. In this process, the distance that the thread ring 203 descends is the grinding depth of the damaged or cracked part by the grinding pen 214, and then the screw rod 2181 is rotated to drive the injection head 218 to rise, so that the rising height of the injection head 218 is equal to the grinding depth, and the telescopic sleeve 2151 is dragged to make the bottom end of the telescopic sleeve 2151 flush with the end of the injection head 218, and then the air pump 318 can be started to shape and spray the surface of the carbon fiber composite material to be repaired;

[0080] In this process, the air pump 318 sends the airflow into the transmission box 301 to drive the rotating wheel 302 to rotate, and then the airflow enters the corresponding ring box 320 at the top of the threaded rod 202 through the exhaust pipe 303, and enters the corresponding ring box 320 at the bottom of the threaded rod 202 through the connecting pipe 322, and then enters the corresponding connecting cavity 323 through the bellows 324, and enters the corresponding cavity 212 from the corresponding hollow arm 207 through the corresponding branch pipe 211 and the short pipe 325. Here, the flow path from the ring box 320 at the top of the threaded rod 202 to the cavity 212 is defined as the transmission path. The device has five groups of transmission paths. The airflow will eventually enter the cavity 212 where the deflection wheel 2143 is installed to drive the deflection wheel 2143 to rotate, so that the grinding pen 214 is driven by the shaft tube 213 and rotates synchronously with the deflection wheel 2143;

[0081] In the above process, the rotation of the rotating wheel 302 will drive the shaft 201 to rotate synchronously. Under the limit of the limit ring 228, the grinding pen 214, the sandblasting head 215, the wiping head 216, the negative pressure head 217 and the injection head 218 will deflect synchronously around the shaft 201. In addition, the grinding pen 214 will rotate synchronously with the rotation direction of the shaft 201 under the drive of the deflection wheel 2143. In this process, the grinding pen 214 will grind and trim the damaged part or cracked part of the carbon fiber composite material to be repaired to remove the damaged fibers, and the airflow will enter the slot 2142 and be ejected through the air jet 2141 after driving the deflection wheel 2143 to rotate, so as to cool the grinding pen 214 and blow off the dust removed by grinding.

[0082] At the same time, it can be known from the above adjustment that under the limit of the transmission seat 208, the deflection angles of the sandblasting head 215, the wiping head 216, the negative pressure head 217 and the injection head 218 are all synchronized with the grinding pen 214, that is, their positions are all consistent with the grinding surface of the grinding pen 214. At this time, the air pump 318 extracts the air inside the return box 316 in real time. Under the connection between the exhaust pipe 317 and the corresponding transmission path, negative pressure will be formed at the negative pressure head 217. As the negative pressure head 217 deflects, the dust blown off from the grinding pen 214 is sucked into the return box 316;

[0083] After the damaged or cracked part of the carbon fiber composite material to be repaired is polished, the bolt 313 is turned to open the sand outlet 312. At this time, the sand and gravel in the sand storage bucket 310 fall into the sand outlet 312, and the air flow in the transmission box 301 is blown into the sand storage bucket 310 through the air jet pipe 315, forcing the sand and gravel to enter the corresponding transmission path through the sand shooting pipe 314, and enter the sand blasting head 215 through the corresponding shaft tube 213 and be ejected through the sand shooting port 2152. With the deflection of the sand blasting head 215, the polished surface is uniformly sandblasted and roughened, and then the ejected sand and gravel are sent to the return box 316 under the negative pressure of the negative pressure head 217;

[0084] After the sandblasting roughening of the polished surface is completed, the on-off valve 326 on one side of the storage box 304 containing the solvent is opened, and the airflow inside the transmission box 301 will enter the corresponding storage box 304, forcing the piston plate 306 to press the solvent at the bottom. The solvent will enter the wiping head 216 from the corresponding transmission path through the cleaning tube 308 and be absorbed by the sponge sleeve 2161. As the wiping head 216 deflects, the sponge sleeve 2161 will clean and wipe the polished surface. In this process, air is filled into the vertical cylinder 3042 through the air valve 3046 to provide elastic support for the partition 3043. Driven by the top rod 3044 and the connecting plate 3045, the air pressure on the top of the piston plate 306 can be offset. The discharge speed of the solvent can be regulated by adjusting the air pressure at the bottom of the partition 3043.

[0085] Similarly, after opening the on-off valve 326 on the other side, the bonding interface glue will enter the injection head 218 through the glue injection tube 309 and the corresponding transmission path under the action of air pressure, and the bonding interface glue will be evenly injected and smeared on the polished surface as the injection head 218 deflects. The injection speed of the bonding interface glue can be regulated by adjusting the air pressure at the bottom of another partition 3043. After the polished surface is cleaned and wiped, the deflection angle of the polished surface can be determined according to the indication of the pointer 2091 and the angle plate 2092 to trim the carbon fiber hard sheet, and the required number of layers of the carbon fiber hard sheet is calculated according to the polishing depth. Then, the carbon fiber hard sheet is attached to the repair position of the repaired product, and the carbon fiber hard sheet is tried to confirm whether the shape of the carbon fiber hard sheet and the repaired part are consistent. If not, the shape of the carbon fiber hard sheet needs to be trimmed until the shape is consistent.

[0086] After the trial pasting is confirmed to be completed, the bonding interface glue is evenly applied on the front and back sides of the carbon fiber hard sheet, and the on-off valve 326 on the other side is opened to inject and apply the bonding interface glue to the polished surface, and then the carbon fiber hard sheet is attached to the polished surface. After the repaired product is attached to the carbon fiber hard sheet, it is placed stably and left to stand at room temperature for 60 minutes before being put into the oven for baking. The baking conditions are 80℃ / 60 minutes. After the product is baked, the surface of the product is smoothed and the repair work is completed.

[0087] Finally, it should be noted that the above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A repair device for a carbon fiber composite material product, comprising a top plate (100), characterized in that: A concave seat (101) is installed at the bottom of the top plate (100), and a shaping spraying mechanism (200) is installed at the bottom of the top plate (100) at the top of the concave seat (101); The shaping spraying mechanism (200) comprises a shaft (201); A shaft rod (201) is embedded and rotatably mounted in the middle of the bottom end of the top plate (100); a threaded rod (202) is mounted at the bottom end of the shaft rod (201); an elastic head (206) is mounted at the bottom end of the threaded rod (202); a threaded ring (203) is mounted on the outside of the threaded rod (202) through a thread; a slip ring (204) is slidably mounted on the outside of the threaded rod (202) at the bottom of the threaded ring (203); and a compression spring (205) is sleeved on the outside of the threaded rod (202) at a position between the threaded ring (203) and the slip ring (204). A plurality of hollow arms (207) are installed on the outer curved surface of the slip ring (204) so ​​as to rotate at equal angles along the circumferential direction, a transmission seat (208) is installed at the bottom of the hollow arm (207), a hollow gear (209) is installed symmetrically on the inner side of the transmission seat (208), a mounting head (210) is installed at the bottom of the hollow gear (209), a branch pipe (211) is installed at the end of the mounting head (210) and the hollow arm (207), and the mounting head (210) and the hollow arm (207) are connected to the hollow gear (209) through the branch pipe (211); The mounting head (210) is provided with a cavity (212) inside, and a shaft tube (213) is embedded and rotatably mounted in the middle of the bottom end of the cavity (212). The hollow arm (207), the transmission seat (208), the hollow gear (209), the mounting head (210), the branch pipe (211), the cavity (212) and the shaft tube (213) together form a linkage adjustment structure. The linkage adjustment structure is provided in five groups along the circumferential direction of the slip ring (204), and the bottoms of the five groups of linkage adjustment structures are respectively installed with a grinding pen (214), a sandblasting head (215), a wiping head (216), a negative pressure head (217) and an injection head (218); A mounting plate (219) is rotatably mounted on the middle of the outer curved surface of the shaft rod (201); a plurality of driving screw rods (220) are rotatably mounted at equal angles along the circumferential direction on the bottom of the outer curved surface of the mounting plate (219); a threaded head (221) is threadedly mounted on the outer side of the driving screw rod (220); a sliding ring (222) is slidably mounted on the outer side of the driving screw rod (220) at a position close to one side of the mounting plate (219); a spring (223) is sleeved on the outer side of the driving screw rod (220) at a position between the threaded head (221) and the sliding ring (222); the threaded head (221) is A gas spring (224) is installed at the bottom of the outer curved surface of the sliding ring (222); a pressure block (225) is installed at the end of the gas spring (224) at the bottom of the threaded head (221); a gear ring (226) is rotatably installed at the top of the outer curved surface of the mounting plate (219); a gear plate (227) is installed at the position of the outer curved surface of the driving screw rod (220) corresponding to the gear ring (226); a limit ring (228) is slidably installed at the bottom of the sliding ring (204) on the outer side of the threaded rod (202); and a plurality of slide rails (229) are installed at equal angles along the circumferential direction on the outer curved surface of the sliding ring (204).

2. The repair device for carbon fiber composite material products according to claim 1, characterized in that: A slide bar (102) is embedded and slidably mounted on the top of the side end surface of the concave seat (101); a transverse screw rod (105) is embedded and rotatably mounted at a position corresponding to the slide bar (102) on one side of the side end surface of the concave seat (101); a longitudinal screw rod (106) is mounted on one side of the side end surface of the slide bar (102); a support rod (103) is mounted on the other side of the side end surface of the slide bar (102); and an opening frame is slidably mounted on the outer sides of the longitudinal screw rod (106) and the support rod (103). (104), a threaded sleeve (107) is embedded and rotatably installed at a position corresponding to the longitudinal screw (106) on one side of the side end surface of the opening frame (104), a vertical screw (108) is rotatably installed at a corner of the top of the opening frame (104), and the vertical screw (108) is connected to the top plate (100) through a thread, and a guide rod (109) is installed at the remaining corner of the top of the opening frame (104), and the guide rod (109) is slidably connected to the top plate (100).

3. The repairing device for carbon fiber composite material products according to claim 1, characterized in that: A laser lamp (2061) is embedded and installed in the middle of the bottom end of the elastic head (206) and the pressure block (225); the input end of the laser lamp (2061) is electrically connected to the output end of an external power supply; a pointer (2091) is installed in the middle of the side end surface of the hollow gear (209); an angle plate (2092) is embedded and installed at the position of the side end surface of the transmission seat (208) corresponding to the hollow gear (209); the limit ring (228) is slidably connected to the transmission seat (208) through a slide rail (229); and the transmission seat (208) is connected to the sliding ring (222) through a gas spring (224).

4. The repairing device for carbon fiber composite material products according to claim 1, characterized in that: The top ends of the grinding pen (214), the wiping head (216) and the negative pressure head (217) are all rotatably connected to the corresponding mounting head (210); the top end of the sandblasting head (215) is fixedly connected to the mounting head (210); a screw rod (2181) is rotatably mounted on the top of the outer curved surface of the injection molding head (218); the injection molding head (218) is connected to the mounting head (210) via the screw rod (2181); the sandblasting head (215), the wiping head (216), the negative pressure head (217) and the injection molding head (218) are all connected to the cavity (212) via the shaft tube (213); the top end of the injection molding head (218) is slidably connected to the shaft tube (213); the grinding pen (214), the sandblasting head (215), the wiping head (216), the negative pressure head (217) and the injection molding head (218) are arranged in sequence at equal angles along the rotation direction of the shaft rod (201).

5. The repairing device for carbon fiber composite material products according to claim 1, characterized in that: A deflection wheel (2143) is rotatably installed inside one of the cavities (212); the top end of the grinding pen (214) is connected to the deflection wheel (2143) through a shaft tube (213); a jet port (2141) is provided at the bottom end of the mounting head (210) located on one side of the grinding pen (214); slots (2142) are provided at the positions of the jet port (2141) and the branch pipe (211) on both sides of the outer curved surface of the cavity (212); a sponge sleeve (2161) is sleeved at the end of the wiping head (216); a scraping ear (2162) is installed at the bottom end of the mounting head (210) located outside the sponge sleeve (2161); and a plurality of filter screens (2171) are evenly and equidistantly embedded in the outer curved surface of the negative pressure head (217).

6. The repairing device for carbon fiber composite material products according to claim 1, characterized in that: A plurality of sandblasting ports (2152) are evenly and evenly provided at the bottom and the bottom end of the outer curved surface of the sandblasting head (215), and a telescopic sleeve (2151) is installed at the bottom end of the mounting head (210) at the outer side of the sandblasting head (215).

7. The repairing device for carbon fiber composite material products according to claim 1, characterized in that: A directional transmission mechanism (300) is installed on the top of the concave seat (101), and the directional transmission mechanism (300) includes a transmission box (301); A transmission box (301) is installed in the middle of the top of the top plate (100), a rotating wheel (302) is installed at the top of the shaft (201) at a position inside the transmission box (301), and the rotating wheel (302) is rotatably connected to the transmission box (301), an exhaust pipe (303) is installed on one side of the bottom end of the transmission box (301), and material storage boxes (304) are symmetrically installed on both sides of the top of the top plate (100), and an increase in the material storage box (304) is installed on one side of the top end. A pressure pipe (305), an on-off valve (326) is installed at the positions of the boost pipe (305) on both sides of the top of the transmission box (301), corresponding to the positions of the boost pipe (305), a piston plate (306) is slidably installed inside the storage box (304), a telescopic pipe (307) is installed on one side of the top of the piston plate (306), a cleaning pipe (308) is installed in the middle of the bottom end of one storage box (304), and a glue injection pipe (309) is installed in the middle of the bottom end of the other storage box (304); A sand storage bucket (310) is installed on one side of the top of the top plate (100), a sand funnel (311) is installed on the bottom of the inner wall of the sand storage bucket (310), a sand outlet (312) is opened in the middle of the bottom of the sand storage bucket (310), a bolt (313) is installed through thread embedding at a position corresponding to the sand outlet (312) on the outer curved surface of the top plate (100), a sand injection pipe (314) is installed at the end of the sand outlet (312), and an air injection pipe (315) is installed on one side of the top of the transmission box (301) at a position corresponding to the sand storage bucket (310); A return box (316) is installed on the other side of the top of the top plate (100), and an exhaust pipe (317) is installed in the middle of the top of the return box (316). An air pump (318) is installed at the top of the top plate (100) between the transmission box (301) and the return box (316). An air connection pipe (319) is installed at one side of the top of the transmission box (301) near the position of the air pump (318) and in the middle of the bottom of the return box (316). The return box (316) is connected to the air outlet of the air pump (318) through the air connection pipe (319), and the return box (316) is connected to the air inlet of the air pump (318) through the air connection pipe (319); A plurality of ring boxes (320) are evenly and evenly embedded and installed at the top and bottom of the outer curved surface of the shaft (201), and a sealing ring (321) is embedded and rotatably installed on the outer curved surface of the ring box (320), and the exhaust pipe (303), the cleaning pipe (308), the glue injection pipe (309), the sand-blasting pipe (314) and the exhaust pipe (317) are all connected to the ring box (320) through the sealing ring (321). A connecting pipe (322) is installed on the inner wall of the ring box (320), and the two ends of the connecting pipe (322) are respectively connected to the ring boxes (320) on both sides of the mounting plate (219). The slip ring (204) is provided with a plurality of connection cavities (323) at equal angles along the circumferential direction. A bellows (324) is embedded in the outer wall of the connection cavity (323), and the connection cavity (323) is connected to the ring box (320) through the bellows (324). A short tube (325) is installed in the middle of the end surface on the other side of the hollow gear (209), and the cavity (212) and the inner cavity of the hollow arm (207) are connected to the short tube (325) through a branch tube (211), and the inner cavity of the hollow arm (207) is directly connected to the connection cavity (323).

8. The repairing device for carbon fiber composite material products according to claim 7, characterized in that: A filling valve (3041) is embedded and installed at the position of the telescopic tube (307) corresponding to the top of the storage box (304), and the end of the telescopic tube (307) is connected to the filling valve (3041). A vertical cylinder (3042) is symmetrically installed on the outer curved surface of the top plate (100), and a partition (3043) is slidably installed inside the vertical cylinder (3042). A push rod (3044) is installed in the middle of the top of the partition (3043) and the piston plate (306), and a connecting plate (3045) is installed at the top of the push rod (3044). An air valve (3046) is installed in the middle of the bottom end of the vertical cylinder (3042).

9. The repairing device for carbon fiber composite material products according to claim 7, characterized in that: A sealed drawer (3161) is slidably embedded in the top of the side end surface of the return box (316), and a filter box (3162) is slidably embedded in the bottom of the side end surface of the return box (316). A filter plate (3163) is embedded in the middle of the bottom end of the sealed drawer (3161) and in the interior of the return box (316) between the filter box (3162) and the sealed drawer (3161). The interior of the filter box (3162) is filled with activated carbon, filter sponge and desiccant in sequence.

10. A method for repairing a carbon fiber composite material product according to any one of claims 1 to 9, characterized in that: The steps include: S1. Use carbon fiber prepreg, high temperature carbon fiber prepreg of high temperature bismaleimide resin, or high temperature cyanate quartz fiber prepreg to bake and form a hardened sheet; S2. The damaged part or cracked part to be repaired is polished with a grinding pen (214) to remove the damaged fibers, and then the carbon fiber substrate to be repaired is roughened by sandblasting, the dust is blown off, and then it is wiped clean with a solvent. The baked and cured carbon fiber hard sheet also needs to be roughened by sandblasting, the dust is blown off, and then it is wiped clean with a solvent; S3. Use DP460 glue to repair general carbon fiber composite products, use DP760 glue to repair high-temperature fiber composite products of high-temperature bismaleimide resin and high-temperature cyanate quartz fiber composite products, and add 3%-10% short fibers according to the weight ratio, and mix the glue and fibers evenly; S4. Perform a trial pasting of the carbon fiber hard sheet. After confirming that the shape of the carbon fiber hard sheet is consistent with the repaired part, evenly spray the prepared DP460 glue mixed with carbon fiber short fibers on the part of the carbon fiber composite material product to be repaired and the front and back sides of the carbon fiber hard sheet; S5. Attach the carbon fiber hard sheet to the product to be repaired, press it tightly and place it steadily. After standing at room temperature for 60 minutes, put it into the oven for baking at 80℃ / 60 minutes. After the product is baked, smooth the surface of the product to complete the repair work.

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