A recycling apparatus for carbon fiber material processing

Abstract

This invention discloses a recycling device for carbon fiber material processing, belonging to the field of solid waste treatment and renewable resource recycling technology. It includes an operating table; a protective cover is fixedly installed on the upper surface of the operating table, and a material inlet is opened on the side wall of the protective cover. A sealing door covering the surface of the material inlet is hinged to the side wall of the protective cover. The reciprocating deformation exhaust generated by the first corrugated pipe and the rubber elastic element as the crossbeam rises and falls, combined with the negative pressure suction structure in the protective cover and collection chamber, can help guide the carbon fiber dust in the cutting area to the collection chamber, improving the directional collection effect of the dust. When the crossbeam moves downward to shear, high-pressure air is directionally sprayed onto the side wall of the cutter through the pressurization chamber of the elastic element for local purging and removal. When the crossbeam returns to its original position, the volume of the first corrugated pipe decreases sharply, generating a high-speed airflow that sweeps and disturbs the operating table surface and dead corners at multiple angles, causing the deposited dust to be instantly suspended and completely extracted by the negative pressure air duct, preventing the disorderly retention of fine carbon fiber dust.

Description

Technical Field

[0001] This invention relates to the field of solid waste treatment and recycling technology, and more specifically, to a recycling device for processing carbon fiber materials. Background Technology

[0002] Carbon fiber reinforced polymer (CFRP) composites, with their excellent properties such as lightweight, high specific strength, high specific modulus, and corrosion resistance, have been widely used in many key fields such as aerospace, automotive lightweighting, and wind turbine blades. With the explosive growth in CFRP applications, the amount of defective products and scrap from the manufacturing process and end products has surged dramatically. How to achieve efficient and environmentally friendly recycling of CFRP has become a key bottleneck restricting the sustainable development of this industry. In existing recycling technologies, high-temperature pyrolysis is typically used to separate and recycle high-value carbon fibers from the resin matrix.

[0003] Before implementing the pyrolysis process, due to the limited volume of the pyrolysis reactor, large CFRP waste is typically sheared or crushed into smaller blocks using mechanical cutting equipment. However, in traditional mechanical cutting processes, the high-speed friction and shearing between the blades and the material generate fine carbon fiber dust and resin particles. These fine dust particles are characterized by their small size, easy suspension, and easy diffusion. If left uncontrolled, these dust particles can easily spread in the processing environment, affecting the cleanliness of the work area and adhering to surrounding equipment.

[0004] To address dust pollution, existing technologies typically employ negative pressure suction by placing a dust collection device next to the cutting station. However, in actual processing, due to the lack of effective surface compression constraint on the waste material during cutting, the fine dust generated during cutting is easily trapped and retained in the gaps between solid waste materials or in stacked dead corners under airflow turbulence. This prevents the external dust collection device from completely collecting the dust, resulting in a large amount of dust still being lost and remaining in the open processing environment.

[0005] Therefore, a recycling device for carbon fiber material processing is proposed. Summary of the Invention

[0006] In view of the problems existing in the prior art, the purpose of this invention is to provide a recycling device for carbon fiber material processing, which can improve the dust collection effect during the cutting process.

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] A recycling device for processing carbon fiber materials includes an operating table; A protective cover is fixedly installed on the upper surface of the operating table. A material inlet is opened on the side wall of the protective cover, and a sealing door covering the surface of the material inlet is hinged to the side wall of the protective cover. A horizontal beam is vertically slidably installed inside the protective cover, and a lifting drive mechanism for driving the horizontal beam to rise and fall vertically is provided inside the protective cover. The lower surface of the crossbeam is provided with a cutting mechanism and a material ejection mechanism for separating the material from the cutting mechanism after cutting; The cutting mechanism includes two supports that are vertically and symmetrically mounted on the lower surface of the crossbeam. A rotating shaft is horizontally rotatably mounted between the two supports. Multiple cutting blades are mounted on the rotating shaft at intervals along its axial direction. A drive motor with an output shaft fixedly connected to the rotating shaft is fixedly mounted on the crossbeam. The control panel has a collection chamber, and the upper surface of the control panel has a discharge port that communicates with the collection chamber. The operating platform is equipped with a material pushing mechanism, and the material pushing mechanism and the discharge port are respectively located on both sides of the vertical projection line of the crossbeam; A vacuum cleaner is fixedly installed on the outer wall of the protective cover. The suction end of the vacuum cleaner is connected to a three-way pipe. The first input end of the three-way pipe is connected to the inside of the protective cover, and the second input end of the three-way pipe is connected to the inside of the collection chamber. Both the protective cover and the side wall of the collection chamber are provided with air inlets that connect to the outside.

[0009] Furthermore, the lifting drive mechanism includes a hydraulic cylinder that is vertically fixedly installed on the top wall inside the protective cover, and the output shaft of the hydraulic cylinder is fixedly connected to the upper surface of the crossbeam; A first bellows is sealed between the inner top wall of the protective cover and the upper surface of the crossbeam, and the first bellows is sleeved on the outside of the hydraulic cylinder.

[0010] Furthermore, the unloading mechanism includes a guide rod that is vertically fixedly installed on the lower surface of the crossbeam. A pressure plate is slidably sleeved on the guide rod. An elastic element is installed between the pressure plate and the crossbeam. The pressure plate is evenly provided with first clearance holes adapted to the cutting blade. When the hydraulic cylinder is in the retracted state, under the action of the elastic element, the pressure plate is located at the bottom end of the guide rod, and the cutting blade is located above the first clearance hole. The upper surface of the operating table is provided with a cutting groove corresponding to the cutting blade and a second clearance hole adapted to the guide rod. The first clearance hole and the cutting groove are vertically aligned. The bottom ends of both the cutting groove and the second clearance hole are connected to the collection chamber.

[0011] Furthermore, a first one-way exhaust valve is uniformly embedded on the side wall of the first bellows, and the first one-way exhaust valve is circumferentially distributed on the outer periphery of the first bellows; a first one-way intake valve is fixedly embedded on the upper surface of the protective cover, and the output end of the first one-way intake valve extends into the first bellows.

[0012] Furthermore, a flow guiding cavity is provided inside the pressure plate, and inclined air jet holes are evenly provided on the bottom wall of the flow guiding cavity, with the air jet holes pointing towards the corresponding cutting blade side wall.

[0013] Furthermore, the elastic element is made of rubber material, and a pressurization chamber is provided on the elastic element. A second one-way air intake valve and a second one-way air exhaust valve are embedded in the side wall of the pressurization chamber. The input end of the second one-way intake valve is fixedly connected to a second elastic bellows, which passes through the protective cover and communicates with the outside. The output end of the second one-way exhaust valve extends into the guide cavity.

[0014] Furthermore, the material pushing mechanism includes an electric telescopic rod that is horizontally fixedly installed on the upper surface of the operating table, and a scraper that is fixedly installed on the output end of the electric telescopic rod; The protective cover has a socket on its side wall, and the output end of the electric telescopic rod slides through the socket and extends into the interior of the protective cover. The end face of the scraper slides against the inner wall of the protective cover, and when the electric telescopic rod is in the retracted state, the scraper and the discharge port are respectively set on both sides of the vertical projection line of the crossbeam.

[0015] Furthermore, the top wall of the scraper is located below the bottom wall of the material inlet; An elastic sleeve is fixedly installed at the edge of the scraper's side wall, and the other end of the elastic sleeve is fixedly connected to the inner wall of the protective cover.

[0016] Furthermore, a porous sieve plate is installed at an angle inside the collection chamber. The sieve plate is located below the discharge port to receive the broken material falling through the discharge port and allow the broken material to slide down its inclined surface.

[0017] Furthermore, it also includes an L-shaped clamp for fixing the cutting blade to the rotating shaft; The L-shaped clamp includes an axial section extending along the axis of rotation and a radial section extending along the axis of rotation, both of which have through holes. A first hexagonal bolt is inserted into the through hole of the axial section, and a first threaded hole is opened on the rotating shaft to engage with the thread of the first hexagonal bolt; A second hexagonal bolt is inserted into the through hole of the radial section, and a second threaded hole is opened on the cutting blade to mate with the thread of the second hexagonal bolt.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) This solution utilizes the reciprocating deformation exhaust generated by the first corrugated pipe and the rubber elastic element as the crossbeam rises and falls, combined with the negative pressure suction structure in the protective cover and collection chamber, to help guide the carbon fiber dust in the cutting area to the collection chamber, thereby improving the directional collection effect of the dust. When the crossbeam moves down to shear, high-pressure air is directionally sprayed onto the side wall of the tool through the pressurization chamber of the elastic element for local purging and removal; when the crossbeam returns to its original position, the volume of the first corrugated pipe decreases sharply, generating a high-speed airflow that sweeps and disturbs the operating table and dead corners at multiple angles, causing the deposited dust to be instantly suspended and completely extracted with the negative pressure air duct, preventing the carbon fiber fine dust from being randomly retained.

[0019] (2) Through the elastic action of the pressure plate, before the cutting blade touches the material, the pressure plate first moves down to press the material, suppressing shearing vibration and reducing the occurrence of tearing dust from the source; during the return stroke, the elastic force of the elastic element pushes the pressure plate and the cutting blade to generate relative displacement, forcibly pushing out the debris and sticky resin stuck between adjacent blades; finally, with the help of the scraper below the material inlet to adhere and sweep, the residual debris and table dust are forcibly pushed into the discharge port, thereby preventing debris from adhering to the surface of the worktable and improving the cleaning effect of debris and dust.

[0020] (3) The split L-shaped clamping plate implements bidirectional rigid constraint on the cutting blade through the axial and radial sections. While providing strong anti-vibration and anti-loosening performance, it allows individual blades to be disassembled and replaced independently in situ without scrapping all the cutting blades. At the same time, the first bellows sleeved on the outside of the hydraulic cylinder and the elastic sleeve sleeved on the outside of the output end of the electric telescopic rod form an independent sealed protective cavity for the precision drive mechanism inside the protective cover. This physically prevents conductive and abrasive dust from intruding into the piston rod and sliding surface, thereby reducing the probability of mechanical jamming and ensuring work efficiency. Attached Figure Description

[0021] Figure 1 This is a top view of the structure of the present invention; Figure 2 This is a bottom-view structural diagram of the present invention; Figure 3 This is a front view of the present invention. Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A; Figure 5 For the present invention Figure 3 Enlarged structural diagram at point B; Figure 6 This is a cross-sectional view of the protective cover of the present invention; Figure 7 For the present invention Figure 6 Enlarged structural diagram at point C; Figure 8This is a schematic cross-sectional view of the combined cutting blade and rotating shaft of the present invention; Figure 9 This is a schematic diagram of the combined structure of the drive motor, rotating shaft, and bracket of the present invention; Figure 10 This is a cross-sectional structural schematic diagram of the elastic element of the present invention.

[0022] Explanation of the labels in the diagram: 1. Operating platform; 101. Collection chamber; 102. Discharge port; 103. Cutting groove; 104. Second clearance hole; 2. Protective cover; 201. Material inlet; 202. Sealing door; 3. Crossbeam; 4. Support; 5. Rotating shaft; 6. Cutting blade; 7. Drive motor; 8. Vacuum cleaner; 9. T-pipe; 10. Air inlet; 1001. Filter screen; 11. Hydraulic cylinder; 1101. First bellows; 12. Guide rod; 13. Pressure plate; 1301. First clearance hole; 1302. Flow guide chamber; 13 03. Jet nozzle; 14. Elastic element; 1401. Pressurization chamber; 15. First one-way exhaust valve; 16. First one-way intake valve; 17. Second one-way intake valve; 18. Second one-way exhaust valve; 19. Second elastic bellows; 20. Electric telescopic rod; 21. Scraper; 22. Elastic sleeve; 23. Screen plate; 24. L-shaped clamp; 2401. Axial section; 2402. Radial section; 2403. First hexagonal bolt; 2404. Second hexagonal bolt; 25. First screw hole; 26. Second screw hole. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0024] Example 1: Please see Figures 1 to 10 A recycling device for processing carbon fiber materials, including an operating table 1; A protective cover 2 is fixedly installed on the upper surface of the operating table 1. A material inlet 201 is opened on the side wall of the protective cover 2. A sealing door 202 covering the surface of the material inlet 201 is hinged to the side wall of the protective cover 2. The top wall of the sealing door 202 is hinged to the side wall of the protective cover 2; A crossbeam 3 is vertically slidably installed inside the protective cover 2. The two ends of the crossbeam 3 are vertically slidably installed on two opposite inner side walls of the protective cover 2, and the protective cover 2 is provided with a lifting drive mechanism for driving the crossbeam 3 to rise and fall vertically. The lower surface of the crossbeam 3 is provided with a cutting mechanism and a material ejection mechanism for separating the material from the cutting mechanism after cutting; The cutting mechanism includes two supports 4 vertically and symmetrically installed on the lower surface of the crossbeam 3. A rotating shaft 5 is horizontally rotatably installed between the two supports 4. Multiple cutting blades 6 are installed on the rotating shaft 5 at intervals along its axial direction. A drive motor 7 with an output shaft fixedly connected to the rotating shaft 5 is fixedly installed on the crossbeam 3. The operating table 1 has a collection chamber 101 inside, and the upper surface of the operating table 1 has a discharge port 102 that communicates with the collection chamber 101. The operating table 1 is equipped with a pushing mechanism. The pushing mechanism and the discharge port 102 are respectively set on both sides of the vertical projection line of the crossbeam 3, so that the cut material can move toward the discharge port 102. A vacuum cleaner 8 is fixedly installed on the outer wall of the protective cover 2. The suction end of the vacuum cleaner 8 is connected to a three-way pipe 9. The first input end of the three-way pipe 9 is connected to the inside of the protective cover 2, and the second input end of the three-way pipe 9 is connected to the inside of the collection chamber 101. Both the protective cover 2 and the collection chamber 101 have air inlets 10 that communicate with the outside, and a filter screen 1001 is fixedly installed in the air inlet 10.

[0025] Among them, vacuum cleaner 8 is existing technology and will not be described in detail.

[0026] The lifting drive mechanism includes a hydraulic cylinder 11 that is vertically fixedly installed on the top wall inside the protective cover 2. The output shaft of the hydraulic cylinder 11 is fixedly connected to the upper surface of the crossbeam 3 to drive the crossbeam 3 to perform precise vertical lifting. When carbon fiber is cut, it generates suspended fine dust. This dust has high hardness and conductivity, which can cause wear on the piston rod and seals of the hydraulic cylinder 11. Therefore, a retractable first bellows 1101 is sealed between the inner top wall of the protective cover 2 and the upper surface of the crossbeam 3. The first bellows 1101 is sleeved on the outside of the hydraulic cylinder 11. The upper end of the first bellows 1101 is fixedly and sealed to the inner top wall of the protective cover 2, and the lower end is fixedly and sealed to the upper surface of the crossbeam 3.

[0027] When the hydraulic cylinder 11 drives the crossbeam 3 to move up and down, the first bellows 1101 is simultaneously stretched or compressed, always maintaining an external sealing cover on the hydraulic cylinder 11. A protective cavity is constructed around the hydraulic cylinder 11 to prevent carbon fiber dust and resin particles from intruding and adhering to the piston rod surface of the hydraulic cylinder 11. This prevents impurities from wearing down the seals, causing hydraulic oil leakage or jamming of the hydraulic cylinder 11, thereby extending the service life of the drive mechanism and ensuring the overall safe and reliable operation of the equipment.

[0028] The material ejection mechanism includes a guide rod 12 vertically fixedly installed on the lower surface of the crossbeam 3. A pressure plate 13 is slidably sleeved on the guide rod 12. An elastic element 14 is installed between the pressure plate 13 and the crossbeam 3. The pressure plate 13 is evenly provided with first clearance holes 1301 that are adapted to the cutting blade 6. When the hydraulic cylinder 11 is in the retracted state, under the action of the elastic element 14, the pressure plate 13 is located at the bottom end of the guide rod 12, and at this time the cutting blade 6 is located above the first clearance hole 1301. The upper surface of the operating table 1 is provided with a cutting groove 103 corresponding to the cutting blade 6 and a second clearance hole 104 adapted to the guide rod 12. The first clearance hole 1301 corresponds to the cutting groove 103 in the vertical direction. The bottom ends of the cutting groove 103 and the second clearance hole 104 are both connected to the collection cavity 101.

[0029] When the hydraulic cylinder 11 drives the crossbeam 3 to move downward, the pressure plate 13 moves downward accordingly. The pressure plate 13 stops moving downward after it contacts and presses the material to be cut on the surface of the operating table 1. As the crossbeam 3 continues to move downward, it overcomes the resistance of the elastic element 14 and drives the cutting blade 6 to gradually move downward. The lower end of the guide rod 12 gradually extends into the second clearance hole 104. At the same time, the cutting blade 6 passes through the first clearance hole 1301 to cut the material to be cut. At this time, the elastic element 14 is compressed and stores energy.

[0030] After cutting, the hydraulic cylinder 11 drives the crossbeam 3 to move upward and retract, and the cutting blade 6 is pulled upward accordingly. During this process, under the action of the elastic force released by the elastic element 14, the pressure plate 13 still maintains the state of pressing the material in the initial stage, so that the cutting blade 6 moves upward relative to the pressure plate 13 and exits the first clearance hole 1301. Thus, by utilizing the relative movement between the pressure plate 13 and the cutting blade 6, the scrap material stuck between two adjacent cutting blades 6 is forcibly pushed out, realizing the automatic material unloading and anti-jamming functions of the equipment.

[0031] In the initial state, the carbon fiber reinforced composite material to be processed is placed onto the surface of the operating table 1 through the material inlet 201 on the side wall of the protective cover 2. After placement, the sealing door 202 is closed. Utilizing the hinged design between the top wall of the sealing door 202 and the side wall of the protective cover 2, the sealing door 202 naturally droops and adheres to the outside of the material inlet 201 under its own weight, thereby constructing a fully enclosed external physical protection interface to prevent dust from escaping into the open working environment.

[0032] Once ready, start the vacuum cleaner 8. The suction end of the vacuum cleaner 8, through the diversion and suction effect of the three-way pipe 9, simultaneously creates a negative pressure environment in the internal space of the protective cover 2 and the collection chamber 101 below the operating table 1. During this process, clean air from the outside is passively drawn in through the air inlets 10 on the side walls of the protective cover 2 and the collection chamber 101 under the pressure difference, after being filtered by the filter screen 1001. The vacuum cleaner 8 simultaneously draws air into the interior of the protective cover 2 and the collection chamber 101 through the three-way pipe 9. With the active replenishment of outside air from the air inlets 10, a directional air channel is formed inside the protective cover 2 and the collection chamber 101 from top to bottom, from the air inlets 10 toward the input end of the three-way pipe 9, so as to guide the dust generated by cutting to the three-way pipe 9 for collection and extraction.

[0033] Subsequently, the lifting drive mechanism is activated to drive the crossbeam 3 to move steadily down along the relative inner wall of the protective cover 2, and the drive motor 7 starts synchronously and drives the rotating shaft 5 and multiple cutting blades 6 installed axially at intervals to rotate at high speed.

[0034] When the crossbeam 3 moves down to the set height, the material ejection mechanism set on the lower surface of the crossbeam 3 first contacts and presses the material on the surface of the operating table 1. By implementing the pre-positioned active rigid clamping constraint before the cutter contacts the material, the vibration of the material in the subsequent shearing process is suppressed, thereby reducing the amount of fine carbon fiber dust generated by physical vibration tearing from the source.

[0035] As the crossbeam 3 continues to descend, multiple high-speed rotating cutting blades 6 perform multi-segment synchronous shearing of the material to be cut. At this time, the fine dust and resin particles with high hardness and conductivity generated by physical destruction are immediately captured by the directional negative pressure airflow inside the protective cover 2 and then collected and extracted along the air duct to the first input end of the three-way pipe 9.

[0036] After the cutting process is completed, the lifting drive mechanism drives the crossbeam 3 to rise vertically and return to its original position. In the initial stage of the upward movement of the crossbeam 3, the material ejection mechanism operates to physically separate the cut block fragments from the upward-pulling cutting blade 6, thereby avoiding the situation where highly viscous resin residue or irregularly shaped fragments get stuck between two adjacent cutting blades 6, eliminating the risk of blade jamming and maintaining the continuous sharpness of the blade.

[0037] Once the cutting blade 6 has completely detached from the material and risen to a safe height with the crossbeam 3, the pushing mechanism on the operating table 1 is activated. Starting from the side of the vertical projection line of the crossbeam 3, the pushing mechanism moves horizontally along the upper surface of the operating table 1, scraping and pushing away the scattered blocky debris and residual carbon fiber dust adhering to the surface of the operating table 1 due to static electricity. This process concentrates and pushes the processing residue into the discharge port 102. This active, full-plane horizontal sweeping and removal solves the persistent technical problem of traditional negative pressure suction technology being unable to remove stubborn residues from tabletop gaps and corners, as well as large particles, achieving automatic cleaning and resetting of the processing surface.

[0038] Finally, the lumpy fragments and dust scraped off by the pushing mechanism fall directly into the collection chamber 101 through the discharge port 102 for centralized storage. The secondary suspended fine dust that is stirred up again during the material discharge process due to gravity impact or airflow disturbance is sucked away and purified by the vacuum cleaner 8 through the second input end of the three-way pipe 9 under the continuous action of the negative pressure environment in the collection chamber 101, thereby realizing the efficient recycling of carbon fiber materials and dust collection.

[0039] like Figure 6 As shown, a first one-way exhaust valve 15 is uniformly embedded on the side wall of the first bellows 1101, and the first one-way exhaust valve 15 is circumferentially distributed on the outer periphery of the first bellows 1101; a first one-way intake valve 16 is fixedly embedded on the upper surface of the protective cover 2, and the output end of the first one-way intake valve 16 extends into the first bellows 1101.

[0040] When the hydraulic cylinder 11 drives the crossbeam 3 to perform vertical reciprocating motion, the volume of the cavity inside the first bellows 1101 changes alternately, producing a pumping airflow effect similar to that of a piston pump. When the crossbeam 3 moves downward to perform the cutting operation, the first bellows 1101 is stretched, and the volume of its internal cavity increases to form a negative pressure. At this time, the first one-way exhaust valve 15 automatically closes under the action of pressure difference, and the clean air from the outside is drawn into the cavity of the first bellows 1101 through the first one-way intake valve 16, thus preventing the dusty air inside the protective cover 2 from being drawn in and contaminating the hydraulic cylinder 11. When the crossbeam 3 returns to its original position, the first bellows 1101 contracts accordingly, and the clean air in the cavity is discharged through the first one-way exhaust valve 15 and flows downward. The discharged airflow forms a downward air pressure above the operating table 1, which, together with the system negative pressure generated by the vacuum cleaner 8, helps to drive the lighter, fine carbon fiber dust deposited on the surface of the operating table 1 towards the discharge port 102 and the negative pressure duct. Combined with the system negative pressure generated by the vacuum cleaner 8 inside the protective cover 2, it promotes the rapid and smooth removal of suspended dust by the vacuum cleaner 8. This improves the dust collection rate of the equipment.

[0041] like Figure 10As shown, a flow guide cavity 1302 is provided inside the pressure plate 13, and inclined air jet holes 1303 are evenly provided on the bottom wall of the flow guide cavity 1302. The inner diameter of the air jet holes 1303 is 1.5mm to 2.5mm, and the air jet holes 1303 are oriented towards the side wall of the corresponding cutting blade 6.

[0042] The elastic element 14 is made of wear-resistant hydrogenated nitrile rubber with a Shore hardness of 60A to 70A. A pressure chamber 1401 is provided on the elastic element 14. The initial volume of the pressure chamber 1401 is V1. When the crossbeam 3 descends to the maximum shear limit, the elastic element 14 is fully compressed. At this time, the volume of the pressure chamber 1401 becomes V2, and the ratio of V1 to V2 is set to be greater than or equal to 3.0 to 4.0 to ensure that when the elastic element 14 is compressed rapidly, a high-speed pulse airflow sufficient to overcome the electrostatic adhesion of fine carbon fiber dust can be generated instantaneously in the pressure chamber 1401. A second one-way air intake valve 17 and a second one-way air exhaust valve 18 are embedded on the side wall of the pressure chamber 1401. The input end of the second one-way air intake valve 17 is fixedly connected to the second elastic bellows 19, which passes through the protective cover 2 and communicates with the outside; and the second elastic bellows 19 is always in a stretched and taut state during the movement of the crossbeam 3. The output end of the second one-way exhaust valve 18 extends into the guide cavity 1302 and is connected to the guide cavity 1302.

[0043] During the cutting process, the elastic element 14 is gradually squeezed as the crossbeam 3 moves down, resulting in a decrease in the internal volume of the pressurizing chamber 1401 and an increase in air pressure. The high-pressure gas in the pressurizing chamber 1401 is discharged into the guide chamber 1302 through the second one-way exhaust valve 18, and finally sprayed directionally onto the surface of the cutting blade 6 from each inclined jet hole 1303.

[0044] This jet of air can directionally blow away carbon fiber dust generated in the cutting area. Simultaneously, due to the significant heat sensitivity of the resin matrix in the carbon fiber composite material, it easily accumulates heat during high-speed vibratory cutting by the cutting blade 6, causing the resin to melt and adhere to the blade's sidewall. In this solution, the clean air from outside, directionally ejected through the jet nozzle 1303, can perform forced convection heat transfer on the cutting blade 6, maintaining the temperature of the cutting area below the resin's melting point. This prevents the heat-sensitive resin from melting and sticking to the blade, and guides the dust towards the negative pressure collection area, avoiding dust residue and diffusion in the processing area, and improving the dust removal efficiency of the vacuum cleaner 8.

[0045] like Figure 6 , Figure 7 As shown, the pushing mechanism includes an electric telescopic rod 20 that is horizontally fixedly installed on the upper surface of the operating table 1, and a scraper 21 that is fixedly installed on the output end of the electric telescopic rod 20. The protective cover 2 has an insertion hole on its side wall, and the output end of the electric telescopic rod 20 slides through the insertion hole and extends into the interior of the protective cover 2. The end face of the scraper 21 slides against the inner wall of the protective cover 2, and when the electric telescopic rod 20 is in the retracted state, the scraper 21 and the discharge port 102 are respectively set on both sides of the vertical projection line of the crossbeam 3.

[0046] The top wall of scraper 21 is located below the bottom wall of material inlet 201; An elastic sleeve 22 is fixedly installed on the side wall edge of the scraper 21, and the other end of the elastic sleeve 22 is fixedly connected to the inner wall of the protective cover 2.

[0047] When the carbon fiber material to be cut is placed on the upper surface of the operating table 1 inside the protective cover 2 through the material inlet 201 on the side wall of the protective cover 2, the top wall of the scraper 21 is located below the bottom wall of the material inlet 201, thus providing sufficient clearance for the material to be fed. This avoids structural interference or collision between the material and the scraper 21 during the feeding process, ensuring that the material can be smoothly and stably fed onto the surface of the operating table 1.

[0048] Meanwhile, one end of the elastic sleeve 22 is fixed to the edge of the side wall of the scraper 21 and the other end is fixed to the inner wall of the protective cover 2, so that the elastic sleeve 22 can unfold with the contour of the scraper 21 when it is stretched and compressed by the electric telescopic rod 20.

[0049] This edge-to-edge sealing method creates a sealed isolation cavity between the back of the scraper 21 and the inner wall of the protective cover 2, isolating the part of the electric telescopic rod 20 that extends into the inside of the protective cover 2 from the processing environment, preventing carbon fiber dust from flowing around the dead corner behind the scraper 21 and invading the machine, thus improving the dustproof safety factor of the pushing mechanism.

[0050] After the cutting process is completed, the electric telescopic rod 20 is activated, driving its output end to extend horizontally, thereby causing the scraper 21 to sweep against the upper surface of the operating table 1. During the translation process, the scraper 21 concentrates and pushes the remaining blocky fragments and fine dust on the table into the discharge port 102, and finally falls into the collection chamber 101, thereby removing the processing residue on the table and actively providing a clean working surface for the next processing cycle.

[0051] Under the sealing and physical barrier effect of the elastic sleeve 22, carbon fiber scraps and dust can be prevented from entering the movement gap between the scraper 21 and the inner wall of the protective cover 2, thereby preventing the scraps from accumulating in the dead corner behind the scraper 21 and causing the stroke to be blocked, eliminating the hidden danger of mechanical jamming, and ensuring that the scraper 21 can be smoothly and accurately reset to the initial position during the return stroke.

[0052] like Figure 6As shown, a porous sieve plate 23 is installed at an inclination inside the collection chamber 101. The sieve plate 23 is located below the discharge port 102 to receive the broken material falling through the discharge port 102 and allow the broken material to slide down its inclined surface.

[0053] During the material discharge and dust removal process, the cut fragments fall into the collection chamber 101 through the discharge port 102 and tilt and impact the screen plate 23, and then slide down along the inclined surface of the screen plate 23.

[0054] During this process, the crushed material collides physically with the sieve plate 23. The impact vibration generated during the collision can shake off the loose, fine carbon fiber dust that is mixed or adhered to the surface of the crushed material, thus separating the dust from the blocky crushed material.

[0055] Since the particle size of carbon fiber dust is much smaller than the porous diameter of the sieve plate 23, the dust after detachment can pass through the holes of the sieve plate 23 and enter the space below the sieve plate 23 under the dual drive of its own gravity and the negative pressure airflow introduced by the vacuum cleaner 8. Finally, it is sucked in by the vacuum cleaner 8 with the airflow, which improves the collection effect of carbon fiber dust generated during the cutting process.

[0056] like Figure 8 As shown, it also includes an L-shaped clamp 24 for fixing the cutting blade 6 to the rotating shaft 5; The L-shaped clamp 24 includes an axial section 2401 extending along the axis of the rotating shaft 5 and a radial section 2402 extending along the radial direction of the rotating shaft 5. Both the axial section 2401 and the radial section 2402 are provided with through holes. A first hexagonal bolt 2403 is inserted through the through hole of the axial section 2401, and a first threaded hole 25 is provided on the rotating shaft 5 to be threaded with the first hexagonal bolt 2403; A second hexagonal bolt 2404 is inserted into the through hole of the radial section 2402. The cutting blade 6 has a second threaded hole 26 that is threaded to the second hexagonal bolt 2404. During assembly, the first hexagonal bolt 2403 passes through the through hole of the axial section 2401 of the L-shaped clamp 24 and is tightened and fixed with the first threaded hole 25 on the rotating shaft 5, so that the axial section 2401 fits tightly against the outer surface of the rotating shaft 5; the second hexagonal bolt 2404 passes through the through hole of the radial section 2402 and is tightened and fixed with the second threaded hole 26 on the cutting blade 6.

[0057] Under the rigid bidirectional constraint of the L-shaped clamp 24, the axial movement and tangential wobble of the cutting blade 6 are completely restricted, thus constructing a high-strength rigid transmission chain between the rotating shaft 5 and the cutting blade 6.

[0058] When the drive motor 7 drives the rotating shaft 5 to rotate, the torque is transmitted to each cutting blade 6 through the first hexagonal bolt 2403, the L-shaped clamp 24 and the second hexagonal bolt 2404, ensuring that the cutting blade 6 always maintains absolute synchronization with the rotating shaft 5 in the high-speed rotation and strong impact carbon fiber cutting operation, avoiding tool loosening or phase shift, and improving the operating stability of the cutting mechanism. Furthermore, this split-type fixing structure enables modular assembly of the cutting blade 6 and the rotating shaft 5. When the cutting blade 6 at a specific workstation becomes worn or chipped, the individual blade can be quickly replaced in situ simply by removing the corresponding bolts, without the need for complete scrapping, thus reducing the long-term maintenance costs of the equipment.

[0059] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A recycling device for processing carbon fiber materials, comprising an operating table (1); Its features are: A protective cover (2) is fixedly installed on the upper surface of the operating table (1). A material inlet (201) is opened on the side wall of the protective cover (2). A sealing door (202) covering the surface of the material inlet (201) is hinged on the side wall of the protective cover (2). A crossbeam (3) is vertically slidably installed inside the protective cover (2), and a lifting drive mechanism for driving the crossbeam (3) to rise and fall vertically is provided inside the protective cover (2); the lifting drive mechanism includes a hydraulic cylinder (11) vertically fixedly installed on the top wall inside the protective cover (2), and the output shaft of the hydraulic cylinder (11) is fixedly connected to the upper surface of the crossbeam (3); The lower surface of the crossbeam (3) is provided with a cutting mechanism and a material ejection mechanism for separating the material from the cutting mechanism after cutting; the material ejection mechanism includes a guide rod (12) that is vertically fixedly installed on the lower surface of the crossbeam (3), and a pressure plate (13) is slidably sleeved on the guide rod (12). The cutting mechanism includes two supports (4) vertically and symmetrically installed on the lower surface of the crossbeam (3), a rotating shaft (5) is horizontally rotatably installed between the two supports (4), a plurality of cutting blades (6) are installed on the rotating shaft (5) at intervals along its axial direction, and a drive motor (7) with an output shaft fixedly connected to the rotating shaft (5) is fixedly installed on the crossbeam (3). The operating table (1) has a collection chamber (101) inside, and the upper surface of the operating table (1) has a discharge port (102) communicating with the collection chamber (101). The operating table (1) is equipped with a pushing mechanism, and the pushing mechanism and the discharge port (102) are respectively located on both sides of the vertical projection line of the crossbeam (3); A vacuum cleaner (8) is fixedly installed on the outer wall of the protective cover (2). The suction end of the vacuum cleaner (8) is connected to a three-way pipe (9). The first input end of the three-way pipe (9) is connected to the inside of the protective cover (2), and the second input end of the three-way pipe (9) is connected to the inside of the collection chamber (101). Both the protective cover (2) and the collection chamber (101) have air inlets (10) that communicate with the outside; a filter screen (1001) is fixedly installed inside the air inlet (10).

2. The recycling equipment for carbon fiber material processing according to claim 1, characterized in that: The protective cover (2) is sealed between the inner top wall and the upper surface of the crossbeam (3) by a first corrugated pipe (1101), and the first corrugated pipe (1101) is sleeved on the outside of the hydraulic cylinder (11).

3. The recycling equipment for carbon fiber material processing according to claim 2, characterized in that: An elastic element (14) is installed between the pressure plate (13) and the crossbeam (3), and the pressure plate (13) is evenly provided with first clearance holes (1301) adapted to the cutting blade (6); when the hydraulic cylinder (11) is in the retracted state, under the action of the elastic element (14), the pressure plate (13) is located at the bottom end of the guide rod (12), and at this time the cutting blade (6) is located above the first clearance hole (1301); The upper surface of the operating table (1) is provided with a cutting groove (103) corresponding to the cutting blade (6) and a second clearance hole (104) adapted to the guide rod (12). The first clearance hole (1301) and the cutting groove (103) are vertically aligned. The bottom ends of the cutting groove (103) and the second clearance hole (104) are both connected to the collection chamber (101).

4. The recycling equipment for carbon fiber material processing according to claim 3, characterized in that: The first one-way exhaust valve (15) is uniformly embedded on the side wall of the first bellows (1101), and the first one-way exhaust valve (15) is circumferentially distributed on the outer periphery of the first bellows (1101); the first one-way intake valve (16) is fixedly embedded on the upper surface of the protective cover (2), and the output end of the first one-way intake valve (16) extends into the first bellows (1101).

5. A recycling device for carbon fiber material processing according to claim 4, characterized in that: The pressure plate (13) has a flow guide cavity (1302) inside. The bottom wall of the flow guide cavity (1302) is evenly provided with inclined jet holes (1303), and the jet holes (1303) are oriented towards the side wall of the corresponding cutting blade (6).

6. A recycling device for carbon fiber material processing according to claim 5, characterized in that: The elastic element (14) is made of rubber material. A pressurization chamber (1401) is provided on the elastic element (14). A second one-way air intake valve (17) and a second one-way air exhaust valve (18) are embedded on the side wall of the pressurization chamber (1401). The input end of the second one-way air intake valve (17) is fixedly connected to a second elastic bellows (19), which penetrates the protective cover (2) and communicates with the outside. The output end of the second one-way exhaust valve (18) extends into the guide cavity (1302).

7. A recycling device for carbon fiber material processing according to claim 1, characterized in that: The feeding mechanism includes an electric telescopic rod (20) that is horizontally fixedly installed on the upper surface of the operating table (1), and a scraper (21) that is fixedly installed on the output end of the electric telescopic rod (20). The protective cover (2) has an insertion hole on its side wall, and the output end of the electric telescopic rod (20) slides through the insertion hole and extends into the interior of the protective cover (2). The end face of the scraper (21) slides against the inner wall of the protective cover (2), and when the electric telescopic rod (20) is in the retracted state, the scraper (21) and the discharge port (102) are respectively set on both sides of the vertical projection line of the crossbeam (3).

8. A recycling device for carbon fiber material processing according to claim 7, characterized in that: The top wall of the scraper (21) is located below the bottom wall of the material inlet (201); An elastic sleeve (22) is fixedly installed at the edge of the side wall of the scraper (21), and the other end of the elastic sleeve (22) is fixedly connected to the inner wall of the protective cover (2).

9. A recycling device for carbon fiber material processing according to claim 1, characterized in that: The collection chamber (101) is inclinedly installed with a porous sieve plate (23). The sieve plate (23) is located below the discharge port (102) to receive the broken material falling through the discharge port (102) and allow the broken material to slide down its inclined surface.

10. A recycling device for carbon fiber material processing according to claim 1, characterized in that: It also includes an L-shaped clamp (24) for fixing the cutting blade (6) to the rotating shaft (5); The L-shaped clamp (24) includes an axial section (2401) extending along the axis of the rotating shaft (5) and a radial section (2402) extending along the radial direction of the rotating shaft (5), and both the axial section (2401) and the radial section (2402) are provided with through holes. A first hexagonal bolt (2403) is inserted through the through hole of the axial section (2401), and a first threaded hole (25) is provided on the rotating shaft (5) to be threadedly engaged with the first hexagonal bolt (2403). The radial section (2402) has a through hole through which a second hexagonal bolt (2404) is inserted, and the cutting blade (6) has a second threaded hole (26) that is threaded to the second hexagonal bolt (2404).

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