Polishing device for machining polyether-ether-ketone valve plate

Abstract

The invention belongs to the technical field of polyether-ether-ketone valve plate machining equipment, and particularly relates to a grinding device for polyether-ether-ketone valve plate machining, which comprises a conveying belt, a grabbing mechanism is arranged at one end of a mechanical arm, the grabbing mechanism comprises a fixing block, an overturning assembly and a grinding assembly, and the overturning assembly and the grinding assembly are arranged in a rotating block. A first piston is pushed to slide through a hydraulic cylinder, a to-be-polished polyether-ether-ketone valve plate is fixed to the center position of a grabbing ring, the polyether-ether-ketone valve plate is overturned by controlling an air cylinder and an electric three-way valve, and meanwhile, the polyether-ether-ketone valve plate is driven to rotate by cooperating with sliding of an electric piston; and the side face of the polyether-ether-ketone valve plate is ground through the coarse grinding block and the fine grinding block, so that the grinding efficiency of the polyether-ether-ketone valve plate is effectively improved.

Description

Technical Field

[0001] The invention belongs to the technical field of polyetheretherketone valve sheet processing equipment, and in particular relates to a grinding device for polyetheretherketone valve sheet processing. Background Art

[0002] Polyetheretherketone is a polymer composed of repeating units containing one ketone bond and two ether bonds in the main chain structure. It is a special polymer material with physical and chemical properties such as high temperature resistance and chemical corrosion resistance. It is a type of semi-crystalline polymer material that can be used as a high temperature resistant structural material and electrical insulating material. It can be composited with glass fiber or carbon fiber to prepare reinforcement materials. It is generally a type of polyarylether polymer prepared by condensation with aromatic diphenols.

[0003] PEEK valve discs are made of PEEK polymer materials to make valve discs in reciprocating piston compressor valves, replacing metal materials to make valve discs. They have the advantages of light weight, low noise, corrosion resistance and good sealing. In particular, the service life can reach more than 8,000 hours under normal working conditions, which is more than 4 times longer than that of metal valve discs.

[0004] After searching, the patent with announcement number CN112207659B discloses an automatic valve plate feeding and grinding equipment, which can grind the inner and outer rings of the valve plate at the same time, with high grinding efficiency. After grinding, the support cylinder is moved downward by the first hydraulic rod, so that the ground annular valve plate can slide through the inclined conveying track, which is convenient for unloading and easy to operate, and can automatically grind the inner and outer rings of the annular valve plate.

[0005] However, when the device is used to grind the valve plate, only one side of the valve plate can be grinded. After grinding one side, the valve plate needs to be turned over manually, which affects the grinding efficiency of the valve plate. Summary of the invention

[0006] The object of the present invention is to provide a grinding device for processing polyetheretherketone valve sheets to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a grinding device for processing polyetheretherketone valve sheets, comprising a conveyor belt, a polyetheretherketone valve sheet placed on the surface of the conveyor belt, and a robotic arm installed on one side of the conveyor belt, a gripping mechanism is arranged at one end of the robotic arm, the gripping mechanism comprises a fixed block, a flipping assembly and a grinding assembly, one end of the robotic arm is rotatably connected to a fixed block, a connecting groove is provided on the bottom surface of the fixed block, a first motor is fixedly connected to the interior of the fixed block, a rotating block is fixedly connected to one end of the first motor, a connecting ring adapted to the connecting groove is arranged on the rotating block close to one side of the fixed block, a flipping assembly and a grinding assembly are arranged inside the rotating block; a grinding mechanism is arranged on the side of the conveyor belt close to the robotic arm.

[0008] Furthermore, the flipping assembly includes a cylinder and a grasping structure, the two ends of the rotating block are fixedly connected with a cylinder, a connecting block is fixedly connected to the outer wall of one end of the cylinder, the interior of the connecting block is hollow to form a cavity, the interior of the connecting block is rotatably connected with a connecting shaft, and one end of the connecting shaft extends out of the surface of the connecting block, the surface of the connecting shaft is provided with fins adapted to the cavity, and the end of the connecting shaft extending out of the surface of the connecting block is fixedly connected to a grasping ring, the interior of the rotating block is hollow to form a first air chamber, the interior of the first air chamber is fixedly connected with a hydraulic cylinder, one end of the hydraulic cylinder is provided with a first piston adapted to the first air chamber, the interior of the rotating block is provided with a ventilation pipe adapted to the first air chamber, the interior of the rotating block is provided with an electric three-way valve adapted to the ventilation pipe, and one end of the electric three-way valve is provided with a telescopic tube adapted to the cavity.

[0009] Furthermore, the grabbing structure includes an air injection pipe and a valve core, the electric three-way valve is fixedly connected to the air injection pipe at one end close to the grabbing ring, the surface of the grabbing ring is provided with a valve core adapted to the air injection pipe, and two groups of valve cores are symmetrically arranged on the front and back sides of the grabbing ring, the interior of the grabbing ring is provided with an air groove adapted to the valve core, the interior of the air groove is slidably connected to a slider, and the slider is rotatably connected to an extrusion wheel in the direction of one side close to the center of the grabbing ring.

[0010] Furthermore, the grinding assembly includes a second air chamber and a limiting structure. The interior of the rotating block is hollow to form the second air chamber. The interior of the second air chamber is fixedly connected to an electric piston. The interior of the rotating block is provided with an air inlet groove adapted to the second air chamber. The interior of the rotating block is provided with an air injection groove adapted to the second air chamber. The interiors of the air inlet groove and the air injection groove are both provided with limiting structures.

[0011] Furthermore, the grinding assembly also includes an air injection port arranged on the surface of the grabbing ring and adapted to the air injection groove, the surface of the slider corresponding to the air injection port is provided with an air injection port and an air vent, the interior of the slider is provided with a turbine adapted to the slider, the surface of the extrusion wheel is provided with a tooth groove adapted to the turbine, the interior of the grabbing ring is fixedly connected to a first electric cylinder, one end of the first electric cylinder is fixedly connected to a coarse grinding block, the interior of the grabbing ring is fixedly connected to a second electric cylinder, one end of the second electric cylinder is fixedly connected to a fine grinding block.

[0012] Furthermore, the limiting structure includes a spring arranged inside the air inlet groove, a second piston adapted to the air inlet groove is arranged on the side of the spring close to the air inlet port of the air inlet groove, a plurality of groups of grooves are arranged on the outer wall of the second piston along the circumferential direction, and a limiting ring adapted to the groove is arranged inside the air inlet groove close to the side of the air inlet port of the air inlet groove.

[0013] Furthermore, the grinding mechanism includes a grinding table arranged on one side of the conveyor belt, a second motor is arranged inside the grinding table, one end of the second motor is fixedly connected to a rotating shaft, the grinding table is rotatably connected to a first rotating column inside, a rough grinding disc adapted to the first rotating column is arranged on the surface of the grinding table, a first linkage gear is fixedly connected to the surface of the first rotating column, a second rotating column is rotatably connected to the inside of the grinding table, and the second rotating column, the rotating shaft and the first rotating column are on the same horizontal line, a fine grinding disc adapted to the second rotating column is arranged on the surface of the grinding table, a second linkage gear is fixedly connected to the surface of the second rotating column, a transmission gear is fixedly connected to the surface of the rotating shaft, and a chain adapted to the first linkage gear and the second linkage gear is arranged on the surface of the transmission gear.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] When the present invention is in use, the first piston is pushed by the hydraulic cylinder to slide inside the first air chamber, and the polyetheretherketone valve plate to be polished is fixed to the center position of the grabbing ring. The polyetheretherketone valve plate is flipped by controlling the cylinder and the electric three-way valve. At the same time, the electric piston slides inside the second air chamber, which can drive the polyetheretherketone valve plate to rotate at the center position of the grabbing ring, and the side of the polyetheretherketone valve plate is polished by the coarse polishing block and the fine polishing block, thereby effectively improving the polishing efficiency of the polyetheretherketone valve plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the side-view stereoscopic structure of the present invention;

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the grabbing mechanism of the present invention;

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the connection groove and the connection ring cooperating with each other in the present invention;

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the connecting shaft and the fins cooperating with each other in the present invention;

[0020] Figure 5 It is a three-dimensional structural schematic diagram of the hydraulic cylinder and the first piston cooperating with each other in the present invention;

[0021] Figure 6 It is a schematic diagram of the three-dimensional structure of the slider and the extrusion wheel cooperating with each other in the present invention;

[0022] Figure 7 It is a schematic diagram of the three-dimensional structure of the grab ring and the gas injection port cooperating with each other in the present invention;

[0023] Figure 8 It is a schematic diagram of the three-dimensional structure of the air vent and the turbine in cooperation with each other in the present invention;

[0024] Fig. 9 It is a schematic diagram of the cross-sectional three-dimensional structure of the grinding mechanism of the present invention;

[0025] Fig.10 For the present invention Figure 5 Schematic diagram of the enlarged structure at point A in the middle.

[0026] In the figure: 1, conveyor belt; 2, polyetheretherketone valve plate; 3, mechanical arm; 4, grabbing mechanism; 401, fixed block; 402, connecting groove; 403, first motor; 404, rotating block; 405, connecting ring; 406, cylinder; 407, connecting block; 408, cavity; 409, connecting shaft; 410, fin; 411, grabbing ring; 412, first air chamber; 413, hydraulic cylinder; 414, first piston; 415, vent pipe; 416, electric three-way valve; 417, telescopic pipe; 418, air injection pipe; 419, valve core; 420, air groove; 421, slider; 422, extrusion wheel; 423, second air chamber; 424, electric active Plug; 425, air inlet groove; 426, spring; 427, second piston; 428, groove; 429, limit ring; 430, air injection groove; 431, air injection port; 432, air vent; 433, turbine; 434, tooth groove; 435, first electric cylinder; 436, coarse grinding block; 437, second electric cylinder; 438, fine grinding block; 5, grinding mechanism; 501, grinding table; 502, second motor; 503, rotating shaft; 504, first rotating column; 505, coarse grinding disc; 506, first linkage gear; 507, second rotating column; 508, fine grinding disc; 509, second linkage gear; 510, transmission gear; 511, chain. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] Embodiment 1

[0030] See also Figure 1-Figure 10 The present invention provides a technical solution: a grinding device for processing polyetheretherketone valve sheets, comprising a conveyor belt 1, a polyetheretherketone valve sheet 2 placed on the surface of the conveyor belt 1, and a mechanical arm 3 installed on the surface of one side of the conveyor belt 1, one end of the mechanical arm 3 is provided with a grabbing mechanism 4 for grabbing the polyetheretherketone valve sheet 2, the grabbing mechanism 4 comprises a fixed block 401, a flip assembly and a grinding assembly, one end of the mechanical arm 3 is rotatably connected to the fixed block 401, the bottom end surface of the fixed block 401 is provided with a connecting groove 402, the interior of the fixed block 401 is fixedly connected to a first motor 403, one end of the first motor 403 is fixedly connected There is a rotating block 404, and a connecting ring 405 adapted to the connecting groove 402 is arranged on the side of the rotating block 404 close to the fixed block 401. When the first motor 403 drives the rotating block 404 to rotate, the connecting ring 405 and the connecting groove 402 can ensure the stability of the rotating block 404 rotating on the surface of the fixed block 401. The interior of the rotating block 404 is provided with a flipping component for driving the polyetheretherketone valve plate 2 to flip and a polishing component for polishing the side of the polyetheretherketone valve plate 2; a polishing mechanism 5 for polishing the surface of the polyetheretherketone valve plate 2 is arranged on the side of the conveyor belt 1 close to the robotic arm 3.

[0031] When in use, the robotic arm 3 drives the grabbing mechanism 4 to grab the polyetheretherketone valve sheet 2 to be polished on the surface of the conveyor belt 1, and moves the grabbing mechanism 4 and the polyetheretherketone valve sheet 2 to the surface of the polishing mechanism 5 for polishing. While polishing the surface of the polyetheretherketone valve sheet 2, the first motor 403 is started to drive the rotating block 404 to rotate, and the sliding connection with the connecting groove 402 through the connecting ring 405 can ensure the stability of the rotating block 404 rotating on the surface of the fixed block 401, thereby driving the polyetheretherketone valve sheet 2 to rotate, thereby improving the polishing efficiency of the polyetheretherketone valve sheet 2. At the same time, the side of the polyetheretherketone valve sheet 2 can be polished through the setting of the polishing component. After one side of the polyetheretherketone valve sheet 2 is polished, the polyetheretherketone valve sheet 2 is flipped by the flipping component, so that the other side of the polyetheretherketone valve sheet 2 is polished.

[0032] See also Figure 2-Figure 5 The flip assembly includes a cylinder 406 and a grabbing structure. The two ends of the rotating block 404 are fixedly connected to the cylinder 406. A connecting block 407 is fixedly connected to the outer wall of one end of the cylinder 406. The interior of the connecting block 407 is hollow to form a cavity 408. A connecting shaft 409 is rotatably connected to the interior of the connecting block 407, and one end of the connecting shaft 409 extends out of the surface of the connecting block 407. The surface of the connecting shaft 409 is provided with a fin 410 adapted to the cavity 408. The end of the connecting shaft 409 extending out of the surface of the connecting block 407 is fixedly connected to a grabbing ring 411. The rotating block 40 4 is hollow inside to form a first air chamber 412, a hydraulic cylinder 413 is fixedly connected inside the first air chamber 412, one end of the hydraulic cylinder 413 is provided with a first piston 414 adapted to the first air chamber 412, a vent pipe 415 adapted to the first air chamber 412 is provided inside the rotating block 404, an electric three-way valve 416 adapted to the vent pipe 415 is provided inside the rotating block 404, one end of the electric three-way valve 416 is provided with a telescopic tube 417 adapted to the cavity 408, and the grab ring 411 can grab the polyetheretherketone valve sheet 2 through the grab structure.

[0033] When in use, after polishing one side of the polyetheretherketone valve plate 2, the mechanical arm 3 is started to lift the polyetheretherketone valve plate 2, and then the cylinder 406 pushes the grab ring 411 to separate from the rotating block 404 through the connecting block 407, and then the hydraulic cylinder 413 is started to push the first piston 414 to slide inside the first air chamber 412 and squeeze the air inside the first air chamber 412. After being squeezed, the air inside the first air chamber 412 will enter the inside of the ventilation pipe 415, and the electric The three-way valve 416 is moved to open the connection between the vent pipe 415 and the telescopic tube 417, and the pipeline from the vent pipe 415 to the air injection pipe 418 is closed, so that the air inside the first air chamber 412 enters the cavity 408 inside the connecting block 407 through the telescopic tube 417, and applies thrust to the surface of the fin 410, pushing the connecting shaft 409 and the grabbing ring 411 to rotate, thereby completing the flipping of the polyetheretherketone valve plate 2, and the other side of the polyetheretherketone valve plate 2 can be polished.

[0034] To secure the PEEK valve disc 2 to the surface of the grip ring 411, refer to Figure 5 and Figure 6The grabbing structure includes an air injection pipe 418 and a valve core 419. The electric three-way valve 416 is fixedly connected to the air injection pipe 418 at one end close to the grabbing ring 411. The surface of the grabbing ring 411 is provided with a valve core 419 adapted to the air injection pipe 418, and two groups of valve cores 419 are symmetrically arranged on the front and back sides of the grabbing ring 411. The interior of the grabbing ring 411 is provided with an air groove 420 adapted to the valve core 419, and a slider 421 is slidably connected to the interior of the air groove 420. The slider 421 is rotatably connected to an extrusion wheel 422 in the direction close to the center of the grabbing ring 411.

[0035] When in use, first, the grabbing ring 411 is driven by the mechanical arm 3 to move to the surface of the PEEK valve sheet 2, so that the PEEK valve sheet 2 is located in the center of the grabbing ring 411, and then the electric three-way valve 416 is opened to close the connection between the vent pipe 415 and the telescopic tube 417, and the pipeline in the direction of the vent pipe 415 leading to the air injection pipe 418 is opened, so that the air inside the first air chamber 412 enters the interior of the air injection pipe 418, and the air inside the first air chamber 412 enters the interior of the air groove 420 through the connection between the air injection pipe 418 and the valve core 419, thereby pushing the slider 421 to slide out from the surface of the grabbing ring 411, so that the extrusion wheel 422 on the surface of the slider 421 squeezes the four sides of the PEEK valve sheet 2, thereby fixing the PEEK valve sheet 2 in the center of the grabbing ring 411.

[0036] See also Figure 5 The grinding assembly includes a second air chamber 423 and a limiting structure. The interior of the rotating block 404 is hollow to form the second air chamber 423. The interior of the second air chamber 423 is fixedly connected with an electric piston 424. The interior of the rotating block 404 is provided with an air inlet groove 425 adapted to the second air chamber 423. The interior of the rotating block 404 is provided with an air injection groove 430 adapted to the second air chamber 423. The interiors of the air inlet groove 425 and the air injection groove 430 are both provided with limiting structures.

[0037] When in use, connect an external power supply, start the electric piston 424, and make piston movement inside the second air chamber 423. When the electric piston 424 descends, the limiting structure inside the air inlet groove 425 will release the limitation on the air inlet groove 425, and limit the air injection groove 430 through the limiting structure so that external air can enter the second air chamber 423 through the air inlet groove 425. When the electric piston 424 rises, the limiting structure will limit the air inlet groove 425, and at the same time, the limiting structure inside the air injection groove 430 will release the limitation on the air injection groove 430, so that the air inside the second air chamber 423 can enter the air injection groove 430.

[0038] See also Figure 5-Figure 8The grinding assembly also includes an air injection port 431 arranged on the surface of the grabbing ring 411 and adapted to the air injection groove 430, and an air vent 432 adapted to the air injection port 431 is arranged on the surface of the slider 421 corresponding to the air injection port 431, a turbine 433 adapted to the slider 421 is arranged inside the slider 421, and a tooth groove 434 adapted to the turbine 433 is arranged on the surface of the extrusion wheel 422, and a first electric cylinder 435 is fixedly connected to the inside of the grabbing ring 411, and a coarse grinding block 436 is fixedly connected to one end of the first electric cylinder 435, and a second electric cylinder 437 is fixedly connected to the inside of the grabbing ring 411, and a fine grinding block 438 is fixedly connected to one end of the second electric cylinder 437.

[0039] When in use, the air inside the air injection groove 430 will enter the interior of the slider 421 through the air injection port 431 and the air vent 432, and then be discharged through the corresponding air vent 432. In this process, the flow of air drives the turbine 433 to rotate, and the engagement of the turbine 433 with the tooth groove 434 on the surface of the extrusion wheel 422 drives the extrusion wheel 422 to rotate synchronously, thereby driving the polyetheretherketone valve sheet 2 to rotate at the center position of the grab ring 411, and at the same time, the first electric cylinder 435 pushes the rough grinding block 436 to move toward the outer edge of the polyetheretherketone valve sheet 2, and rough-grinds the outer edge of the polyetheretherketone valve sheet 2. After the rough grinding is completed, the first electric cylinder 435 pushes the rough grinding block 436 to reset, and the second electric cylinder 437 pushes the fine grinding block 438 to move toward the outer edge of the polyetheretherketone valve sheet 2, and fine-grinds the outer edge of the polyetheretherketone valve sheet 2.

[0040] See also Fig.10 The limiting structure includes a spring 426 arranged inside the air inlet groove 425, a second piston 427 adapted to the air inlet groove 425 is arranged on the side of the spring 426 close to the air inlet port of the air inlet groove 425, a plurality of groups of grooves 428 are arranged on the outer wall of the second piston 427 along the circumferential direction, and a limiting ring 429 adapted to the groove 428 is arranged inside the air inlet groove 425 close to the air inlet port of the air inlet groove 425.

[0041] During use, when the electric piston 424 descends, the air pressure inside the second air chamber 423 will be lower than the external air pressure, so that the external air applies a thrust to the surface of the second piston 427, so that the second piston 427 slides inside the second piston 427 and squeezes the spring 426, so that the second piston 427 is separated from the limiting ring 429, thereby releasing the limitation of the groove 428, allowing the external air to enter the interior of the second air chamber 423 through the groove 428. When the air pressure inside the second air chamber 423 is equal to the air pressure of the external air, the spring 426 will push the second piston 427 to reset. When the electric piston 424 rises and falls, the working principle of the limiting structure inside the air injection groove 430 is the same as above.

[0042] See also Fig. 9The grinding mechanism 5 includes a grinding table 501 arranged on one side of the conveyor belt 1, a second motor 502 is arranged inside the grinding table 501, one end of the second motor 502 is fixedly connected to a rotating shaft 503, the inside of the grinding table 501 is rotatably connected to a first rotating column 504, a surface of the grinding table 501 is provided with a coarse grinding disc 505 adapted to the first rotating column 504, a surface of the first rotating column 504 is fixedly connected to a first linkage gear 506, the inside of the grinding table 501 is rotatably connected to a second rotating column 507, and the second rotating column 507, the rotating shaft 503 and the first rotating column 504 are on the same horizontal line, a fine grinding disc 508 adapted to the second rotating column 507 is arranged on the surface of the grinding table 501, a second linkage gear 509 is fixedly connected to the surface of the second rotating column 507, a transmission gear 510 is fixedly connected to the surface of the rotating shaft 503, and a chain 511 adapted to the first linkage gear 506 and the second linkage gear 509 is arranged on the surface of the transmission gear 510.

[0043] When in use, connect an external power source, start the second motor 502, drive the rotating shaft 503 and the transmission gear 510 to rotate, and through the meshing of the transmission gear 510 with the chain 511 and the meshing of the chain 511 with the first linkage gear 506 and the second linkage gear 509, the transmission gear 510 can drive the first linkage gear 506 and the second linkage gear 509 to rotate synchronously through the chain 511 during rotation, so that the first rotating column 504 and the first linkage gear 506 rotate inside the grinding table 501, thereby driving the coarse grinding disc 505 and the fine grinding disc 508 to rotate on the surface of the grinding table 501, and the surface of the polyetheretherketone valve plate 2 can be polished.

[0044] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A grinding device for processing polyetheretherketone valve sheets, comprising a conveyor belt (1), a polyetheretherketone valve sheet (2) placed on the surface of the conveyor belt (1), and a mechanical arm (3) installed on one side of the conveyor belt (1), characterized in that: A gripping mechanism (4) is provided at one end of the mechanical arm (3), and the gripping mechanism (4) comprises a fixed block (401), a turning assembly and a grinding assembly; one end of the mechanical arm (3) is rotatably connected to the fixed block (401), a connecting groove (402) is provided on the bottom surface of the fixed block (401), a first motor (403) is fixedly connected inside the fixed block (401), one end of the first motor (403) is fixedly connected to a rotating block (404), a connecting ring (405) adapted to the connecting groove (402) is provided on the rotating block (404) in a direction close to one side of the fixed block (401), and a turning assembly and a grinding assembly are provided inside the rotating block (404); a grinding mechanism (5) is provided on the conveyor belt (1) in a direction close to one side of the mechanical arm (3).

2. A grinding device for processing polyetheretherketone valve sheets according to claim 1, characterized in that: The flip assembly comprises a cylinder (406) and a grasping structure, the two ends of the rotating block (404) are fixedly connected to the cylinder (406), the outer wall of one end of the cylinder (406) is fixedly connected to a connecting block (407), the interior of the connecting block (407) is hollow to form a cavity (408), the interior of the connecting block (407) is rotatably connected to a connecting shaft (409), and one end of the connecting shaft (409) extends out of the surface of the connecting block (407), the surface of the connecting shaft (409) is provided with a fin (410) adapted to the cavity (408), and the end of the connecting shaft (409) extending out of the surface of the connecting block (407) is fixedly connected to A grab ring (411) is provided, the interior of the rotating block (404) is hollow to form a first air chamber (412), the interior of the first air chamber (412) is fixedly connected with a hydraulic cylinder (413), one end of the hydraulic cylinder (413) is provided with a first piston (414) adapted to the first air chamber (412), the interior of the rotating block (404) is provided with a vent pipe (415) adapted to the first air chamber (412), the interior of the rotating block (404) is provided with an electric three-way valve (416) adapted to the vent pipe (415), and one end of the electric three-way valve (416) is provided with a telescopic tube (417) adapted to the cavity (408).

3. A grinding device for processing polyetheretherketone valve sheets according to claim 2, characterized in that: The gripping structure comprises an air injection pipe (418) and a valve core (419); one end of the electric three-way valve (416) close to the gripping ring (411) is fixedly connected to the air injection pipe (418); the surface of the gripping ring (411) is provided with a valve core (419) adapted to the air injection pipe (418); two groups of valve cores (419) are symmetrically arranged on the front and back sides of the gripping ring (411); an air groove (420) adapted to the valve core (419) is arranged inside the gripping ring (411); a slider (421) is slidably connected inside the air groove (420); and the slider (421) is rotatably connected to an extrusion wheel (422) in a direction close to the center of the gripping ring (411).

4. A grinding device for processing polyetheretherketone valve sheets according to claim 1, characterized in that: The grinding assembly comprises a second air bin (423) and a limiting structure. The interior of the rotating block (404) is hollow to form the second air bin (423). The interior of the second air bin (423) is fixedly connected with an electric piston (424). The interior of the rotating block (404) is provided with an air inlet groove (425) adapted to the second air bin (423). The interior of the rotating block (404) is provided with an air injection groove (430) adapted to the second air bin (423). The interiors of the air inlet groove (425) and the air injection groove (430) are both provided with limiting structures.

5. A grinding device for processing polyetheretherketone valve sheets according to claim 3, characterized in that: The grinding assembly further comprises an air injection port (431) arranged on the surface of the grab ring (411) and adapted to the air injection groove (430); a vent (432) adapted to the air injection port (431) is arranged on the surface of the slider (421) corresponding to the air injection port (431); a turbine (433) adapted to the slider (421) is arranged inside the slider (421); a tooth groove (434) adapted to the turbine (433) is arranged on the surface of the extrusion wheel (422); a first electric cylinder (435) is fixedly connected inside the grab ring (411); one end of the first electric cylinder (435) is fixedly connected to a coarse grinding block (436); a second electric cylinder (437) is fixedly connected inside the grab ring (411); one end of the second electric cylinder (437) is fixedly connected to a fine grinding block (438).

6. A grinding device for processing polyetheretherketone valve sheets according to claim 4, characterized in that: The limiting structure comprises a spring (426) arranged inside the air inlet groove (425); a second piston (427) adapted to the air inlet groove (425) is arranged on the spring (426) near the air inlet side of the air inlet groove (425); a plurality of groups of grooves (428) are arranged on the outer wall of the second piston (427) along the circumferential direction; a limiting ring (429) adapted to the groove (428) is arranged inside the air inlet groove (425) near the air inlet side of the air inlet groove (425).

7. A grinding device for processing polyetheretherketone valve sheets according to claim 1, characterized in that: The grinding mechanism (5) comprises a grinding table (501) arranged on one side of the conveyor belt (1); a second motor (502) is arranged inside the grinding table (501); one end of the second motor (502) is fixedly connected to a rotating shaft (503); the inside of the grinding table (501) is rotatably connected to a first rotating column (504); a rough grinding disc (505) adapted to the first rotating column (504) is arranged on the surface of the grinding table (501); a first linkage gear (506) is fixedly connected to the surface of the first rotating column (504); the inside of the grinding table (501) is rotatably connected to a first rotating column (504); There is a second rotating column (507), and the second rotating column (507), the rotating shaft (503) and the first rotating column (504) are on the same horizontal line. The surface of the grinding table (501) is provided with a fine grinding disc (508) adapted to the second rotating column (507). The surface of the second rotating column (507) is fixedly connected with a second linkage gear (509). The surface of the rotating shaft (503) is fixedly connected with a transmission gear (510). The surface of the transmission gear (510) is provided with a chain (511) adapted to the first linkage gear (506) and the second linkage gear (509).

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