Full-automatic valve grinding machine

Abstract

The invention belongs to the technical field of grinding equipment, and particularly relates to a full-automatic valve grinding machine which comprises a base and a control box fixedly connected to the right side wall of the base, a PLC is fixedly connected to the right side wall of the base, and a clamping mechanism is fixedly connected to the upper side wall of the base. When the grinding machine is used for grinding the sealing door of the valve plate, a proper amount of grinding paste can be automatically dispensed and stricken on the grinding surface of the valve plate, the grinding quality of the valve plate is guaranteed, meanwhile, waste of the grinding paste is avoided, meanwhile, an operator does not need to manually smear and stricken the grinding paste, the workload of the operator is reduced, and the working efficiency is improved. According to the grinding machine, when the grinding material is used for grinding the grinding surface of the valve plate and the grinding surface of the valve plate, proper extrusion force can be kept between the grinding material and the grinding surface of the valve plate, the grinding performance of the valve plate is guaranteed, meanwhile, after the grinding material is consumed to a certain degree, an operator can be reminded to replace the grinding material in time, and the grinding quality of the grinding machine is further guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of grinding equipment, and in particular relates to a full-automatic valve grinding machine. Background Art

[0002] During the use of the valve, the valve plate sealing surface may be scratched and worn due to factors such as the erosion of the medium and the frequent opening and closing of the valve. For example, when a medium containing solid particles flows through the valve, these particles may scratch the valve plate sealing surface. By grinding, these scratches and worn parts can be removed to restore the sealing surface to a smooth surface. For example, a valve plate grinder is proposed in patent announcement number CN103624676A.

[0003] When the grinder is grinding the valve plate, in order to improve the cutting action of the grinder, ensure the lubrication effect between the grinder and the valve plate, and reduce the cutting temperature of the valve plate, a layer of grinding paste is manually applied on the surface of the valve plate. In the grinding process, it is necessary to apply the paste in time according to the progress of grinding and the consumption of the grinding paste. In the coarse grinding stage, due to the rapid consumption of the grinding paste, it is necessary to apply it every 5-10 minutes. In the fine grinding stage, the grinding paste is consumed slowly, and the application frequency is reduced to once every 15-20 minutes. This undoubtedly increases the workload of the operator, and the manual application of the grinding paste leads to excessive application, resulting in waste of grinding paste, and insufficient application, which affects the grinding quality of the valve plate.

[0004] Therefore, a fully automatic valve grinding machine is proposed to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a fully automatic valve grinding machine in view of the above problems.

[0006] To achieve the above object, the present invention adopts the following technical solutions: a fully automatic valve grinding machine, comprising a base and a control box fixedly connected to the right side wall of the base, the right side wall of the base is fixedly connected to a PLC controller, the upper side wall of the base is fixedly connected to a clamping mechanism, the upper side wall of the base is fixedly connected to a mounting frame, the mounting frame is an inverted L-shaped structure, and further comprises:

[0007] A first electric slide rail is fixedly connected to the upper inner wall of the mounting frame, the first electric slide rail is longitudinally arranged, a longitudinal plate is fixedly connected to the movable end of the first electric slide rail, a second electric slide rail is fixedly connected to the lower side wall of the longitudinal plate, a transverse plate is fixedly connected to the movable end of the second electric slide rail, a first electric push rod is fixedly connected to the lower side wall of the transverse plate, and a grinding assembly is fixedly connected to the movable end of the first electric push rod;

[0008] A conveying assembly, arranged on the upper side wall of the transverse plate, for conveying the abrasive paste;

[0009] The scraping component is arranged at the lower end of the conveying component and is used for scraping the grinding paste.

[0010] Preferably, the grinding assembly includes a lifting plate fixedly connected to the moving end of the first electric push rod, the moving end of the first electric push rod is fixedly connected to the upper side wall of the lifting plate through a pressure sensor, the lower side wall of the lifting plate is fixedly connected to a grinding motor, the output end of the grinding motor is fixedly connected to a grinding disk, the lower side wall of the grinding disk is provided with a plurality of grooves, the upper side wall of the grinding disk is fixedly connected to a plurality of second electric push rods, the moving end of the second electric push rod is located in the groove and is fixedly connected to a lower pressure plate through a pressure sensor, the lower side wall of the lower pressure plate is fixedly connected to the same grinding seat through a plurality of springs, the lower side wall of the grinding seat is provided with abrasives, the inner wall of the groove is fixedly connected to an extrusion switch, the side wall of the grinding disk is provided with a plurality of placement grooves, and the inner wall of the placement groove is fixedly connected to an indicator light and a transparent protective sheet, the positions of the plurality of indicator lights correspond to the positions of the plurality of grinding seats, and the extrusion switch is electrically connected to the corresponding indicator lights through a PLC controller.

[0011] Preferably, the conveying assembly includes a storage box fixedly connected to the upper side wall of the transverse plate, the lower side wall of the storage box is fixedly connected with a conveying pipe, the conveying pipe is a hose, and the middle end is a serpentine structure, the lower end of the conveying pipe is fixedly connected with a conveying cylinder, the conveying cylinder is fixedly connected with a bracket and a lifting plate, the lower side wall of the conveying cylinder is fixedly connected with a discharge pipe, the lower end of the discharge pipe is fixedly connected with a discharge head, control one-way valves are provided in the discharge pipe and the conveying pipe, the left side wall of the conveying cylinder is fixedly connected with a suction cylinder, the left side wall of the suction cylinder is fixedly connected with a suction electric push rod, the moving end of the suction electric push rod is located in the suction cylinder and is fixedly connected with a piston plate.

[0012] Preferably, the scraping assembly includes two horizontal plates, the two horizontal plates are fixedly connected to the left and right outer walls of the conveying cylinder respectively, the lower side walls of the two horizontal plates are fixedly connected to the vertical cylinder, the upper inner wall of the vertical cylinder is fixedly connected to the square plate through a spring, the side wall of the vertical cylinder is provided with an air pressure hole, the upper side wall of the square plate is fixedly connected to a conductive block, the conductive block is electrically connected to an external power supply through a reversing assembly, the side wall of the vertical cylinder is inlaid with a conductive plate, the conductive plate is electrically connected to a PLC controller, the lower side wall of the square plate is fixedly connected to a vertical rod, the vertical rod A vertical cylinder extends out from the lower end and is fixedly connected to a scraping seat through a bracket. A plurality of lifting grooves are provided on the lower side wall of the scraping seat. Through ports are provided on the left and right sides of the lifting grooves. The upper side groove walls of the lifting grooves are fixedly connected to blocking blocks through springs. The upper side groove walls of the lifting grooves are fixedly connected to a cross tube. The lower side wall of the cross tube is fixedly connected to two telescopic air bags. The lower ends of the telescopic air bags are fixedly connected to the blocking blocks. The upper side tube wall of the cross tube is fixedly connected to a bent pipe. The bent pipe is an inverted U-shaped structure. An end of the bent pipe away from the cross tube is connected to an air intake assembly.

[0013] Preferably, the air intake assembly includes an air intake cylinder fixedly connected to the side wall of the scraper seat, the side wall of the air intake cylinder is fixedly connected with an air intake electric push rod, the movable end of the air intake electric push rod passes through the air intake cylinder and is fixedly connected with a piston seat, the side wall of the air intake cylinder away from the air intake electric push rod is fixedly connected with a connecting pipe, the connecting pipe is an inverted U-shaped structure, and the end of the bent pipe away from the cross pipe is connected to the connecting pipe.

[0014] Preferably, the reversing assembly includes a wheel frame located above the transverse plate, the wheel frame is fixedly connected to the upper side wall of the transverse plate through a bracket, a metal wheel is rotatably connected inside the wheel frame, a conductive plate is fixedly connected to the lower side wall of the longitudinal plate, the conductive plate is electrically connected to an external power supply, the metal wheel is in contact with the conductive plate, two arc seats are symmetrically fixedly connected to the lower inner wall of the wheel frame, a conductive pin is fixedly connected to the lower side wall of the metal wheel, the conductive pin will contact the surface of the arc seat during rotation, a blocking block is fixedly connected to the upper side wall of the arc seat, and the two arc seats are electrically connected to corresponding conductive blocks respectively.

[0015] Preferably, guide wheels are fixedly connected to both left and right sides of the grinding seat, and the rotating part of the guide wheels is in contact with the groove wall of the groove.

[0016] Preferably, the upper side wall of the base is covered with collecting paper, and the collecting paper is located below the grinding assembly.

[0017] Compared with the existing technology, the advantages of a fully automatic valve grinding machine are:

[0018] 1. Through the provided conveying assembly and scraping assembly, when the valve plate sealing door is ground by a grinder, an appropriate amount of grinding paste can be automatically applied to the grinding surface of the valve plate and scraped flat, which ensures the grinding quality of the valve plate and avoids the waste of grinding paste. At the same time, the operator does not need to manually apply and scrape the grinding paste, which reduces the workload of the operator.

[0019] 2. Through the setting of the grinding assembly, when grinding the grinding surface of the valve plate, the appropriate extrusion pressure can be maintained between the grinding material and the grinding surface of the valve plate, thereby ensuring the grinding performance of the valve plate. At the same time, after the grinding material is consumed to a certain extent, the operator can be reminded in time to replace the grinding material, thereby further ensuring the grinding quality of the grinder.

[0020] 3. Through the scraping component, when the grinding paste on the grinding surface of the valve plate is used for a long time and the performance deteriorates and grinding paste needs to be added in the middle, the waste grinding paste covering the grinding surface can be automatically scraped off and an appropriate amount of new grinding paste can be applied at the same time, ensuring the grinding efficiency of the grinding paste and thus improving the grinding quality of the valve plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a fully automatic valve grinding machine provided by the present invention;

[0022] Figure 2 It is a schematic diagram of the internal structure of a grinding disc in a fully automatic valve grinding machine provided by the present invention;

[0023] Figure 3 It is a structural schematic diagram of a scraping component in a fully automatic valve grinding machine provided by the present invention;

[0024] Figure 4 It is a structural schematic diagram of an air intake assembly in a fully automatic valve grinding machine provided by the present invention;

[0025] Figure 5 It is a schematic diagram of the internal structure of a vertical cylinder in a fully automatic valve grinding machine provided by the present invention;

[0026] Figure 6 It is a schematic diagram of the internal structure of a scraping seat in a fully automatic valve grinding machine provided by the present invention;

[0027] Figure 7 It is a schematic diagram of the positional relationship between a conduction plate and a metal wheel in a fully automatic valve grinding machine provided by the present invention;

[0028] Figure 8 The present invention provides a schematic structural diagram of a reversing component in a fully automatic valve grinding machine.

[0029] In the figure: 1 base, 2 control box, 3 PLC controller, 4 clamping mechanism, 5 mounting frame, 6 first electric slide rail, 7 longitudinal plate, 8 second electric slide rail, 9 transverse plate, 10 first electric push rod, 11 grinding assembly, 111 lifting plate, 112 grinding motor, 12 grinding disc, 13 groove, 14 second electric push rod, 15 lower pressure plate, 16 grinding seat, 17 grinding material, 18 extrusion switch, 19 indicator light, 20 conveying assembly, 201 storage box, 202 conveying pipe, 21 conveying cylinder, 22 discharge pipe, 23 discharge head, 24 control one-way valve, 25 suction material cylinder, 26 suction electric push rod, 27 piston plate, 28 scraping assembly, 281 horizontal plate, 282 vertical cylinder, 29 square plate, 30 conductive block, 31 conductive plate, 32 vertical rod, 33 scraping seat, 34 lifting groove, 35 through port, 36 blocking block, 37 horizontal tube, 38 telescopic airbag, 39 bent pipe, 40 air intake assembly, 401 air intake cylinder, 402 air intake electric push rod, 41 piston seat, 42 connecting pipe, 43 reversing assembly, 431 wheel frame, 432 metal wheel, 44 conductive plate, 45 arc seat, 46 conductive pin, 47 blocking block, 48 guide wheel, 49 collecting paper. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] like Figure 1-Figure 8 As shown, a fully automatic valve grinding machine includes a base 1 and a control box 2 fixedly connected to the right side wall of the base 1, a PLC controller 3 is fixedly connected to the right side wall of the base 1, a clamping mechanism 4 is fixedly connected to the upper side wall of the base 1, and a mounting frame 5 is fixedly connected to the upper side wall of the base 1. The mounting frame 5 is an inverted L-shaped structure, and also includes:

[0032] The first electric slide rail 6 is fixedly connected to the upper inner wall of the mounting frame 5. The first electric slide rail 6 is longitudinally arranged. The moving end of the first electric slide rail 6 is fixedly connected with a longitudinal plate 7. The lower side wall of the longitudinal plate 7 is fixedly connected with a second electric slide rail 8. The moving end of the second electric slide rail 8 is fixedly connected with a transverse plate 9. The lower side wall of the transverse plate 9 is fixedly connected with a first electric push rod 10. The moving end of the first electric push rod 10 is fixedly connected with a grinding assembly 11. The grinding assembly 11 includes a lifting plate 111 fixedly connected to the moving end of the first electric push rod 10. The moving end of the first electric push rod 10 is fixedly connected to the upper side wall of the lifting plate 111 through a pressure sensor. The lower side wall of the lifting plate 111 is fixedly connected with a grinding motor 112. The output end of the grinding motor 112 is fixedly connected with a grinding disc 12. The lower side wall of the grinding disc 12 is provided with a plurality of grooves 13. The upper side wall of the grinding disc 12 is fixedly connected with a plurality of second electric push rods 14. The moving end of the second electric push rod 14 is located in the groove 13, and is fixedly connected to a lower pressure plate 15 through a pressure sensor. The lower side wall of the lower pressure plate 15 is fixedly connected to the same grinding seat 16 through multiple springs. The lower side wall of the grinding seat 16 is provided with a grinding material 17. The inner wall of the groove 13 is fixedly connected to an extrusion switch 18. The side wall of the grinding disc 12 is provided with multiple placement grooves, and the inner wall of the placement groove is fixedly connected with an indicator light 19 and a transparent protective sheet. The positions of the multiple indicator lights 19 and the multiple grinding seats 16 correspond. The extrusion switch 18 is electrically connected to the corresponding indicator light 19 through the PLC controller 3. When the grinding surface of the valve plate is ground, the appropriate extrusion pressure can be maintained between the grinding material 17 and the grinding surface of the valve plate, thereby ensuring the grinding performance of the valve plate. At the same time, after the grinding material 17 is consumed to a certain extent, the operator can be reminded in time to replace the grinding material 17, thereby further ensuring the grinding quality of the grinder.

[0033] The conveying assembly 20 is arranged on the upper side wall of the transverse plate 9 and is used for conveying the grinding paste. The conveying assembly 20 includes a storage box 201 fixedly connected to the upper side wall of the transverse plate 9. The lower side wall of the storage box 201 is fixedly connected with a conveying pipe 202. The conveying pipe 202 is a hose, and the middle end is a serpentine structure. The lower end of the conveying pipe 202 is fixedly connected with a conveying cylinder 21. The conveying cylinder 21 is fixedly connected to the lifting plate 111 through a bracket. The lower side wall of the conveying cylinder 21 is fixedly connected with a discharge pipe 22. The lower end of the discharge pipe 22 is fixedly connected with a discharge head 23. A control one-way valve 24 is provided in the discharge pipe 22 and the conveying pipe 202. The left side wall of the conveying cylinder 21 is fixedly connected with a suction cylinder 25. The left side wall of the suction cylinder 25 is fixedly connected with a suction electric push rod 26. The moving end of the suction electric push rod 26 is located in the suction cylinder 25 and is fixedly connected with a piston plate 27, which can apply grinding paste to the surface of the valve plate.

[0034] The scraping assembly 28 is arranged at the lower end of the conveying assembly 20 and is used for scraping the abrasive paste. The scraping assembly 28 includes two horizontal plates 281, which are respectively fixedly connected to the left and right outer walls of the conveying cylinder 21. The lower side walls of the two horizontal plates 281 are fixedly connected with vertical cylinders 282. The upper inner wall of the vertical cylinder 282 is fixedly connected with a square plate 29 through a spring. The side wall of the vertical cylinder 282 is provided with an air pressure hole. The upper side wall of the square plate 29 is fixedly connected with a conductive block 30. The conductive block 30 is electrically connected to an external power supply through a reversing assembly 43. The side wall of the vertical cylinder 282 is inlaid with a conductive plate 31. The conductive plate 31 is electrically connected to the PLC controller 3. The lower side wall of the square plate 29 is fixedly connected with a vertical cylinder 282. Rod 32, the lower end of the vertical rod 32 extends out of the vertical cylinder 282, and is fixedly connected to a scraping seat 33 through a bracket, a plurality of lifting grooves 34 are provided on the lower side wall of the scraping seat 33, and through openings 35 are provided on the left and right sides of the lifting grooves 34, and the upper side groove wall of the lifting grooves 34 is fixedly connected to a blocking block 36 through a spring, and the upper side groove wall of the lifting grooves 34 is fixedly connected to a transverse tube 37, and the lower side wall of the transverse tube 37 is fixedly connected to two telescopic air bags 38, and the lower end of the telescopic air bags 38 is fixedly connected to the blocking block 36, and the upper side tube wall of the transverse tube 37 is fixedly connected to a bent tube 39, which is an inverted U-shaped structure, and the end of the bent tube 39 away from the transverse tube 37 is connected to an air intake assembly 40, which can scrape the grinding paste.

[0035] The air intake assembly 40 includes an air intake cylinder 401 fixedly connected to the side wall of the scraping seat 33, the side wall of the air intake cylinder 401 is fixedly connected with an air intake electric push rod 402, the movable end of the air intake electric push rod 402 passes through the air intake cylinder 401 and is fixedly connected with a piston seat 41, the side wall of the air intake cylinder 401 away from the air intake electric push rod 402 is fixedly connected with a connecting pipe 42, the connecting pipe 42 is an inverted U-shaped structure, and the end of the bent pipe 39 away from the cross pipe 37 is connected to the connecting pipe 42, which can control the blocking block 36 to move downward.

[0036] The reversing assembly 43 includes a wheel frame 431 located above the transverse plate 9, the wheel frame 431 is fixedly connected to the upper side wall of the transverse plate 9 through a bracket, a metal wheel 432 is rotatably connected inside the wheel frame 431, a conductive plate 44 is fixedly connected to the lower side wall of the longitudinal plate 7, the conductive plate 44 is electrically connected to an external power supply, the metal wheel 432 is in contact with the conductive plate 44, two arc seats 45 are symmetrically fixedly connected to the lower inner wall of the wheel frame 431, a conductive pin 46 is fixedly connected to the lower side wall of the metal wheel 432, the conductive pin 46 will contact the surface of the arc seat 45 during rotation, a blocking block 47 is fixedly connected to the upper side wall of the arc seat 45, the two arc seats 45 are respectively electrically connected to the corresponding conductive blocks 30, and can control the conductive blocks 30 at different positions to be electrically connected to the external power supply.

[0037] The left and right sides of the grinding seat 16 are fixedly connected with guide wheels 48 , and the rotating part of the guide wheels 48 contacts the groove wall of the groove 13 , thereby improving the stability of the grinding seat 16 in moving up and down.

[0038] The upper side wall of the base 1 is paved with collecting paper 49, and the collecting paper 49 is located below the grinding assembly 11, so as to facilitate the collection of the scraped waste grinding paste.

[0039] The operating principle of the present invention is now described as follows: the valve plate to be polished is placed on the upper side wall of the base 1, and the valve plate is clamped by the clamping mechanism 4 (the clamping mechanism 4 includes a clamping box and a threaded rod assembly, the threads on both sides of the threaded rod are rotated in opposite directions, and the threaded rod wall thread sleeve is provided with two threaded barrels, and the threaded rod is driven by a motor to rotate, so that the two threaded barrels can drive the front clamping seat to move in a direction close to each other, and the valve plate is clamped by the clamping seat, and the side wall of the clamping seat is provided with a pressure sensor, which can ensure that the valve plate is clamped The operator then controls the first electric push rod 10 to work through the control box 2, and the first electric push rod 10 drives the grinding disc 12 and the scraping seat 33 to move downward together through the lifting plate 111. When the lower end of the scraping seat 33 is lower than the height of the valve plate, the operator controls the first electric push rod 10 to stop working. Since the lower end of the scraping seat 33 is lower than the lower side of the abrasive 17 in the grinding disc 12, when the lower end of the scraping seat 33 is lower than the height of the valve plate, the abrasive 17 does not contact the valve plate, and the side wall of the scraping seat 33 is provided with a laser The pen can assist the operator to observe the position of the scraping seat 33. After adjusting the position of the scraping seat 33, the operator can transmit an electrical signal to the PLC controller 3 through the control box 2. After receiving the electrical signal, the PLC controller 3 first controls the first electric slide 6 to work. The first electric slide 6 will drive the conveying component 20 and the scraping component 28 to move to the front through the longitudinal moving plate 7, the second electric slide 8, the first electric push rod 10, and the lifting plate 111. Then the PLC controller 3 controls the first electric slide 6 to stop working. , and controls the second electric slide 8 to work, the second electric slide 8 will drive the conveying component 20 and the scraping component 28 to move back and forth, and when the moving end of the second electric slide 8 moves from the left to the rightmost side, the PLC controller 3 will control the first electric slide 6 to drive the second electric slide 8 to move five centimeters to the rear side (the width of the scraping seat 33 is also five centimeters). When the second electric slide 8 drives the scraping component 28 to contact the valve plate, it will transport an appropriate amount of grinding paste to the surface of the valve plate through the conveying component 20 to ensure the grinding quality of the valve plate;

[0040] For example, when the second electric slide 8 drives the scraping assembly 28 to move from left to right, after the scraping seat 33 on the right side contacts the valve plate, the side wall of the scraping seat 33 is an inclined surface. After the side wall of the scraping seat 33 contacts the valve plate, the scraping seat 33 on the right side will move upward under the action of the interaction force, and the scraping seat 33 on the right side will drive the conductive block 30 to move upward through the vertical rod 32, so that the conductive block 30 on the right side contacts the conductive plate 31 on the right side. Since the second electric slide 8 drives the scraping assembly 28 to move to the right, the second electric slide 8 will also drive the wheel frame 431 to move to the right synchronously through the transverse plate 9, and the wheel frame 431 will drive the metal wheel 432 to move to the right together, and the upper side of the metal wheel 432 contacts the conductive plate 44. While driving the metal wheel 432 to move to the right, the metal wheel 432 will rotate counterclockwise under the action of the friction between the metal wheel 432 and the conductive plate 44, and the metal wheel 432 will drive the conductive pin 46 to rotate counterclockwise until the conductive pin 46 contacts the blocking block 47 on the right and stops rotating. At this time, the conductive pin 46 contacts the arc seat 45 on the right, and the arc seat 45 on the right is electrically connected to the conductive block 30 on the right, and the conductive plate 44 is electrically connected to the external power supply. Therefore, the external power supply will be transmitted to the conductive block 30 on the right through the conductive plate 44, the metal wheel 432, the conductive pin 46 and the arc seat 45 on the right. At this time, the conductive block 30 on the right is in contact with the conductive plate 31 on the right, and the conductive plate 31 on the right is in contact with the PLC control When the control device 3 is electrically connected, the current signal will be transmitted to the PLC controller 3 through the conductive block 30 and the conductive plate 31 on the right. After receiving the continuous current signal from the conductive plate 31 on the right, the PLC controller 3 will control the suction electric push rod 26 to work continuously and control the two control one-way valves 24 to work. When the suction electric push rod 26 drives the piston plate 27 to move to the left, the air pressure in the space on the right side of the piston plate 27 will decrease. Under the action of negative pressure, the abrasive paste inside the storage box 201 will pass through the conveying pipe 202, the upper control one-way valve 24, and the conveying cylinder 21 into the suction cylinder 25. When the suction electric push rod 26 drives the piston plate 27 to move to the right, the abrasive paste stored in the suction cylinder 25 will be pushed out. The gas enters the conveying cylinder 21 and is discharged through the discharge pipe 22, the control one-way valve 24 and the discharge head 23 below, and drips onto the surface of the valve plate. At the same time, the PLC controller 3 will also control the air intake electric push rod 402 on the right to work. The air intake electric push rod 402 on the right will push the piston seat 41 to move. The gas inside the air intake cylinder 401 is transported to the multiple telescopic air bags 38 on the right through the connecting pipe 42, multiple curved pipes 39 and multiple transverse pipes 37 by the piston seat 41, so that the multiple telescopic air bags 38 on the right are expanded. After the multiple telescopic air bags 38 on the right are expanded, they will push the multiple blocking blocks 36 downward, and the blocking blocks 36 are used to block the bottom of the lifting groove 34 and the through port 35. While the second electric slide rail 8 drives the right scraping seat 33 to move to the right,The scraping seat 33 on the right can be used to further clean the impurities on the surface of the valve plate, and after applying the grinding paste for the second time during the grinding process, the scraping seat 33 on the right can be used to scrape off the waste grinding paste on the surface of the valve plate, and the through port 35 inside the scraping seat 33 on the left is in an open state. When the scraping seat 33 on the left passes through the grinding paste dripping on the surface of the valve plate, the strip-shaped grinding paste can be dispersed into multiple strips (the grinding paste drips from one side and moves to the right, forming strips on the surface of the valve plate), which is convenient for the subsequent grinding of the abrasive 17. When some of the scraping seats 33 are separated from the valve plate, the conductive block 30 and the conductive plate 31 on the right will be separated. When the PLC controller 3 cannot receive the electrical signal transmitted by the right conductive plate 31, it will control the suction electric push rod 26 to stop working immediately, and the grinding paste It will not fall down, and the air intake electric push rod 402 on the right side is controlled to drive the piston seat 41 on the right side to return to its original position, so that the multiple blocking blocks 36 on the right side move upward to the initial position at the same time. When the second electric slide rail 8 drives the scraping seats 33 on both sides to move to the left, the above steps will be repeated, and the impurities on the surface of the valve plate will be cleaned by the scraping seat 33 on the left side, and the grinding paste will be dispersed into multiple strips by the scraping seat 33 on the right side, and the first electric slide rail 6 drives the scraping seat 33 to move backward for a single time. The distance is five centimeters, which is the same as the width of the scraping seat 33 before and after. Therefore, the grinding paste just applied will not be scraped off by the scraping seat 33, while ensuring the grinding quality of the valve plate, it also avoids the waste of grinding paste. At the same time, there is no need for the operator to manually apply the scraping grinding paste, which reduces the workload of the operator;

[0041] When the grinding paste is applied to the surface of the valve plate, the PLC controller 3 controls the first electric slide rail 6 and the second electric slide rail 8 according to the set program to drive the grinding disc 12 to move to the top of the valve plate. Then the PLC controller 3 controls the first electric push rod 10 to continue working, so that the grinding material 17 under the grinding disc 12 contacts the valve plate. When the grinding material 17 contacts the valve plate, an interaction force is generated. When the pressure sensor between the first electric push rod 10 and the lifting plate 111 detects that the interaction force reaches the set threshold (for valve plate materials with higher hardness, the grinding pressure is 10-30N / cm 2 For softer valve plate materials, the grinding pressure is much smaller, generally between 2-8N / cm 2The pressure sensor will control the first electric push rod 10 to stop working, and then the PLC controller 3 will control the grinding motor 112 to work, and the grinding motor 112 will drive the grinding disc 12 and the grinding material 17 to rotate, and use the grinding material 17 to grind the valve plate. At the same time, the PLC controller 3 will also control the first electric slide rail 6 and the second electric slide rail 8 to work, drive the grinding disc 12 and the grinding material 17 to move on the surface of the valve plate, and fully grind the valve plate. The edge of the grinding material 17 is an arc structure. When the grinding material 17 and the valve plate are separated and re-contacted, the grinding material 17 will not conflict with the side wall of the valve plate, and when the grinding material 17 is worn, the extrusion force between the grinding material 17 and the valve plate will become relatively small. When the pressure sensor between the second electric push rod 14 and the lower pressure plate 15 After the device detects this change, the second electric push rod 14 will drive the lower pressure plate 15 to move downward, and use the lower pressure plate 15 to squeeze the spring below to re-press the grinding seat 16 and the grinding material 17. At the same time, through the design of the spring, when the grinding material 17 moves to the raised part or the recessed part above the valve plate, the grinding material 17 will rise or fall accordingly, so as to always fit with the surface of the valve plate, thereby ensuring the grinding quality of the valve plate. When the grinding material 17 is severely damaged, the second electric push rod 14 will drive the corresponding lower pressure plate 15 to move downward and squeeze the corresponding squeezing switch 18. The corresponding squeezing switch 18 will control the corresponding indicator light 19 to work, so that the operator can quickly find and replace the severely damaged abrasive 17 and ensure the grinding efficiency of the abrasive 17.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fully automatic valve grinding machine, comprising a base (1) and a control box (2) fixedly connected to the right side wall of the base (1), a PLC controller (3) fixedly connected to the right side wall of the base (1), a clamping mechanism (4) fixedly connected to the upper side wall of the base (1), a mounting frame (5) fixedly connected to the upper side wall of the base (1), the mounting frame (5) being an inverted L-shaped structure, characterized in that: Also includes: A first electric slide rail (6) is fixedly connected to the upper inner wall of the mounting frame (5); the first electric slide rail (6) is longitudinally arranged; a movable end of the first electric slide rail (6) is fixedly connected to a longitudinal plate (7); a lower side wall of the longitudinal plate (7) is fixedly connected to a second electric slide rail (8); a movable end of the second electric slide rail (8) is fixedly connected to a transverse plate (9); a lower side wall of the transverse plate (9) is fixedly connected to a first electric push rod (10); and a movable end of the first electric push rod (10) is fixedly connected to a grinding assembly (11); A conveying assembly (20), arranged on the upper side wall of the transverse plate (9), for conveying the grinding paste; The scraping component (28) is arranged at the lower end of the conveying component (20) and is used for scraping the grinding paste.

2. A fully automatic valve grinding machine according to claim 1, characterized in that: The grinding assembly (11) comprises a lifting plate (111) fixedly connected to the moving end of a first electric push rod (10); the moving end of the first electric push rod (10) is fixedly connected to the upper side wall of the lifting plate (111) via a pressure sensor; the lower side wall of the lifting plate (111) is fixedly connected to a grinding motor (112); the output end of the grinding motor (112) is fixedly connected to a grinding disc (12); the lower side wall of the grinding disc (12) is provided with a plurality of grooves (13); the upper side wall of the grinding disc (12) is fixedly connected to a plurality of second electric push rods (14); the moving ends of the second electric push rods (14) are located in the grooves (13); ) and is fixedly connected to a lower pressure plate (15) through a pressure sensor, the lower side wall of the lower pressure plate (15) is fixedly connected to the same grinding seat (16) through multiple springs, the lower side wall of the grinding seat (16) is provided with abrasive (17), the inner wall of the groove (13) is fixedly connected to an extrusion switch (18), the side wall of the grinding disc (12) is provided with multiple placement grooves, and the inner wall of the placement groove is fixedly connected to an indicator light (19) and a transparent protective sheet, the positions of the multiple indicator lights (19) and the multiple grinding seats (16) correspond, and the extrusion switch (18) is electrically connected to the corresponding indicator lights (19) through a PLC controller (3).

3. The fully automatic valve grinding machine according to claim 1, characterized in that: The conveying assembly (20) comprises a storage box (201) fixedly connected to the upper side wall of the transverse plate (9); the lower side wall of the storage box (201) is fixedly connected to a conveying pipe (202); the conveying pipe (202) is a hose, and the middle end is a serpentine structure; the lower end of the conveying pipe (202) is fixedly connected to a conveying cylinder (21); the conveying cylinder (21) is fixedly connected to the lifting plate (111) through a bracket; the lower side wall of the conveying cylinder (21) is fixedly connected to an outlet The material pipe (22) is fixedly connected to a material discharge head (23) at the lower end of the material discharge pipe (22), and a control one-way valve (24) is provided in both the material discharge pipe (22) and the conveying pipe (202). The left side wall of the conveying cylinder (21) is fixedly connected to a material suction cylinder (25), and the left side wall of the material suction cylinder (25) is fixedly connected to a material suction electric push rod (26). The movable end of the material suction electric push rod (26) is located in the material suction cylinder (25) and is fixedly connected to a piston plate (27).

4. A fully automatic valve grinding machine according to claim 1, characterized in that: The scraping assembly (28) comprises two horizontal plates (281), the two horizontal plates (281) are respectively fixedly connected to the left and right outer walls of the conveying cylinder (21), the lower side walls of the two horizontal plates (281) are fixedly connected to a vertical cylinder (282), the upper inner wall of the vertical cylinder (282) is fixedly connected to a square plate (29) through a spring, the side wall of the vertical cylinder (282) is provided with an air pressure hole, the upper side wall of the square plate (29) is fixedly connected to a conductive block (30), the conductive block (30) is electrically connected to an external power supply through a reversing assembly (43), the side wall of the vertical cylinder (282) is inlaid with a conductive plate (31), the conductive plate (31) is electrically connected to a PLC controller (3), the lower side wall of the square plate (29) is fixedly connected to a vertical rod (32), the vertical rod (32) is fixedly connected to the lower side wall of the square plate (29), ) extends out of the lower end of the vertical cylinder (282), and is fixedly connected to a scraping seat (33) through a bracket, a plurality of lifting grooves (34) are provided on the lower side wall of the scraping seat (33), and a through opening (35) is provided on both the left and right sides of the lifting groove (34), an upper groove wall of the lifting groove (34) is fixedly connected to a blocking block (36) through a spring, an upper groove wall of the lifting groove (34) is fixedly connected to a transverse tube (37), a lower side wall of the transverse tube (37) is fixedly connected to two telescopic air bags (38), a lower end of the telescopic air bag (38) is fixedly connected to the blocking block (36), an upper tube wall of the transverse tube (37) is fixedly connected to a bent tube (39), the bent tube (39) is an inverted U-shaped structure, and an end of the bent tube (39) away from the transverse tube (37) is connected to an air intake assembly (40).

5. A fully automatic valve grinding machine according to claim 4, characterized in that: The air intake assembly (40) comprises an air intake cylinder (401) fixedly connected to the side wall of the scraping seat (33); the side wall of the air intake cylinder (401) is fixedly connected to an air intake electric push rod (402); the movable end of the air intake electric push rod (402) passes through the air intake cylinder (401) and is fixedly connected to a piston seat (41); the side wall of the air intake cylinder (401) away from the air intake electric push rod (402) is fixedly connected to a connecting pipe (42); the connecting pipe (42) is an inverted U-shaped structure; the end of the bent pipe (39) away from the transverse pipe (37) is connected to the connecting pipe (42).

6. A fully automatic valve grinding machine according to claim 4, characterized in that: The reversing assembly (43) comprises a wheel frame (431) located above the transverse plate (9), the wheel frame (431) being fixedly connected to the upper side wall of the transverse plate (9) through a bracket, a metal wheel (432) being rotatably connected inside the wheel frame (431), a conductive plate (44) being fixedly connected to the lower side wall of the longitudinal plate (7), the conductive plate (44) being electrically connected to an external power supply, the metal wheel (432) being in contact with the conductive plate (44), two arc seats (45) being symmetrically fixedly connected to the lower inner wall of the wheel frame (431), a conductive pin (46) being fixedly connected to the lower side wall of the metal wheel (432), the conductive pin (46) being in contact with the surface of the arc seat (45) during rotation, a blocking block (47) being fixedly connected to the upper side wall of the arc seat (45), and the two arc seats (45) being electrically connected to corresponding conductive blocks (30) respectively.

7. The fully automatic valve grinding machine according to claim 2, characterized in that: The left and right sides of the grinding seat (16) are fixedly connected with guide wheels (48), and the rotating part of the guide wheel (48) is in contact with the groove wall of the groove (13).

8. The fully automatic valve grinding machine according to claim 1, characterized in that: The upper side wall of the base (1) is paved with collecting paper (49), and the collecting paper (49) is located below the grinding assembly (11).

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