Intelligent detection platform and method for strength of resin grinding wheel

Abstract

The invention belongs to the technical field of grinding wheel detection, and particularly relates to a resin grinding wheel strength intelligent detection platform and method.The resin grinding wheel strength intelligent detection platform comprises a machine table and a controller installed on the end face of the machine table, and further comprises a conveying unit installed on the end face of the machine table and used for conveying a resin grinding wheel; and an annular mounting groove is formed in the side wall of the inserting column, an annular electric heater is fixedly mounted in the annular mounting groove, a driving mechanism is mounted on the machine table, and the driving mechanism drives the inserting column to move up and down. The method can quickly judge the strength of the resin grinding wheel based on the heat conduction difference of the resin grinding wheel, avoids the abrasion of the resin grinding wheel, improves the detection efficiency, is suitable for batch detection of the resin grinding wheel, can automatically mark defects and distinguish products, and can early warn according to the defects, correct the preparation problem, eliminate the stress of the qualified grinding wheel and improve the use effect.

Description

Technical Field

[0001] The invention belongs to the technical field of grinding wheel detection, and in particular relates to an intelligent detection platform and method for the strength of a resin grinding wheel. Background Art

[0002] In the field of industrial manufacturing, resin grinding wheels are widely used and are often used for grinding of metals, ceramics and other materials. Since resin grinding wheels need to withstand high-speed rotation and grinding when working, in order to ensure the safety of the use of resin grinding wheels, it is necessary to test the strength of resin grinding wheels to ensure that the strength of resin grinding wheels meets the use requirements.

[0003] At present, in the production and quality control of resin grinding wheels, there are various types of strength detection devices, most of which use mechanical impact method to measure the strength of grinding wheels. For example, patent announcement number CN217561161U discloses a strength detection device for impact-resistant resin grinding wheels. During detection, this type of device relies on a special pressure loading device to directly apply pressure to the surface of the grinding wheel to determine whether its strength meets the standard. However, this method has obvious disadvantages. On the one hand, the pressure loading device and the surface of the resin grinding wheel are squeezed against each other during the pressure application process, and both are prone to wear, which affects their service life. On the other hand, affected by the uniformity of the mixture of resin and abrasive, the resin grinding wheel may have local weak strength areas. If each point on the surface of the grinding wheel is to be detected one by one, it takes a very long time and is difficult to meet the needs of batch detection. Therefore, only random inspections can be carried out during production, which makes some defective products at risk of outflow, ultimately affecting the use effect. Summary of the invention

[0004] The purpose of the present invention is to provide a resin grinding wheel strength intelligent detection platform and method in view of the above problems.

[0005] To achieve the above object, the present invention adopts the following technical scheme: an intelligent testing platform for resin grinding wheel strength, including a machine platform and a controller installed on the end surface of the machine platform, and also including: A conveying unit, installed on the end surface of the machine table, for conveying the resin grinding wheel; An interpenetrating column is arranged above the machine platform, a side wall of the interpenetrating column is provided with an annular mounting groove, and an annular electric heater is fixedly installed inside the annular mounting groove, and a driving mechanism is installed on the machine platform, and the driving mechanism drives the interpenetrating column to move up and down; A top sleeve, fixedly mounted on the top of the conveying unit, a side wall of the top sleeve being provided with a heat-sensitive constant resistance unit; A top plate is installed on the top of the top sleeve, a marking unit is installed on the bottom of the top plate, and the controller controls the marking unit to work according to the current intensity output by the heat-sensitive constant resistance unit; The early warning unit is installed on the top of the top plate, and the controller controls the operation of the early warning unit according to the current intensity output by the heat-sensing constant resistance unit.

[0006] Preferably, the conveying unit includes side panels fixedly mounted on both sides of the upper end surface of the machine platform, the side walls of the two side panels facing each other are installed with conveyor belt assemblies, limit plates are arranged above the two conveyor belt assemblies, and the side walls of the two limit plates are rotatably connected to multiple rotating rods, the side walls of the two side panels are installed with adjustment assemblies, and the two side panels are connected to the limit plates on the same side through the adjustment assemblies on the same side, and the two conveyor belt assemblies are electrically connected to the controller.

[0007] Preferably, the driving mechanism includes a frame fixedly mounted on the bottom of the machine, a vertical push electric push rod is fixedly inserted on the end face of the frame, a support block is installed on the telescopic end of the vertical push electric push rod, and a through column is installed on the top of the support block, a through hole matching the support block is opened on the end face of the machine, and a top push vibration assembly is installed on the support block.

[0008] Preferably, the heat-sensing constant resistance unit comprises a plurality of transverse electromagnetic push rods fixedly plugged into the side wall of the top sleeve, the telescopic end of each transverse electromagnetic push rod is installed with an arc plate, the inner arc surface of the arc plate is provided with an arc groove, the notch of the arc groove is fixedly installed with an arc-shaped heat-conducting insulating plate, the interior of the arc groove is provided with an arc-shaped thermistor, and the arc-shaped thermistor is fixedly connected to the side wall of the arc-shaped heat-conducting insulating plate on the same side, and a plurality of fixed resistance electric push rods are arranged above the top plate, and each of the fixed resistance electric push rods The telescopic ends of the rods are all installed with insulating blocks, and the end faces of the insulating blocks are fixedly plugged with conductive slip rings. One side of each of the fixed-resistance electric push rods is provided with an insulating rod, and a resistance rod is fixedly installed on the top of the insulating rod. The conductive slip ring is in sliding contact with the side wall of the resistance rod. Each of the arc-shaped thermistors is electrically connected to the corresponding fixed-resistance electric push rod through the controller, and each of the horizontal electromagnetic push rods is electrically connected to the controller. Each of the conductive slip rings and the resistance rod on the same side is electrically connected to the measuring circuit of the controller.

[0009] Preferably, the marking unit includes a liquid storage cover arranged on the inner side of the top sleeve, and the liquid storage cover is installed on the bottom of the top plate, a metering pump is fixedly installed on the bottom of the liquid storage cover, the liquid outlet end of the metering pump is fixedly connected to a hollow circular plate, and a plurality of infusion tubes are fixedly plugged into the side wall of the hollow circular plate, each of the infusion tubes is fixedly connected to a spray head at one end away from the hollow circular plate, and an infusion electric control valve is installed at one end of the inside of each infusion tube away from the hollow circular plate, the controller controls the opening and closing of the infusion electric control valve according to the current intensity of the connection loop between each conductive slip ring and the resistor rod on the same side, the metering pump is electrically connected to the controller, and the interior of the liquid storage cover is filled with marking paint.

[0010] Preferably, the early warning unit includes an annular seat fixedly mounted on the top of the top plate, and a plurality of air storage cavities are arranged inside the annular seat, exhaust micropores are opened on the side walls of each of the air storage cavities, and an air pressure detector is fixedly plugged into the upper cavity wall of each of the air storage cavities, a hollow block is fixedly mounted on the top of the top plate, and air supply pipes are fixedly connected between the hollow block and each of the air storage cavities, an air pump is fixedly mounted on the top of the hollow block, and the air outlet end of the air pump is connected to the interior of the hollow block, an air supply electric-controlled valve is installed inside each of the air supply pipes, an exhaust electric-controlled valve is installed inside the air inlet end of each of the exhaust micropores, each of the air pressure detectors, each of the air supply electric-controlled valves, each of the exhaust electric-controlled valves and the air pump is electrically connected to the controller, each of the fixed-resistance electric push rods and each of the insulating rods is mounted inside the corresponding air storage cavity, a heat dissipation component connected to each of the arc plates is installed on the hollow block, and each of the resistance rods and the corresponding conductive slip rings are electrically connected to the air pump through the controller.

[0011] Preferably, the pushing vibration assembly includes an annular fixing groove opened at the top outer edge of the supporting block, two vertical pushing electromagnetic push rods are fixedly inserted at the bottom of the annular fixing groove, and the telescopic ends of the two vertical pushing electromagnetic push rods are commonly fixedly connected to the same annular pushing plate, and the two vertical pushing electromagnetic push rods are both electrically connected to the controller.

[0012] Preferably, the heat dissipation assembly includes a shunt pipe fixedly plugged into the side wall of the hollow block, and a shunt electric control valve is installed inside the shunt pipe, and the end of the shunt pipe away from the hollow block is fixedly connected to a heat dissipation hose, and each of the arc plates is provided with a heat dissipation cavity, and a radiator is fixedly plugged into the cavity wall of the heat dissipation cavity, and one side wall of the radiator is arranged on the inner side of the arc groove, and a connecting hose is fixedly connected between two adjacent heat dissipation cavities, and the heat dissipation hose is connected to one of the heat dissipation cavities, and an exhaust pipe is arranged on the inner side of the top sleeve away from the heat dissipation hose, and the exhaust pipe is connected to the heat dissipation cavity on the same side, and the shunt electric control valve is electrically connected to the controller.

[0013] A method applied to the above-mentioned resin grinding wheel strength intelligent detection platform, the method comprising the following steps: S1. Start the controller and place the resin grinding wheels to be tested on the conveyor belt assemblies of the two conveyor units in sequence. The controller controls the conveyor belt assemblies to work intermittently to drive each resin grinding wheel to be tested to move; S2. When the controller controls the conveyor belt assembly to stop working, the controller controls the driving mechanism to work, so that the insertion column passes through the center hole of the resin grinding wheel and drives the resin grinding wheel to move between the heat-sensitive fixed resistance units; S3, the controller controls the annular electric heater and the heat-sensitive constant resistance unit to work synchronously and regularly; S4, the controller controls the marking unit and the early warning unit to work synchronously according to the current intensity output by the heat-sensing constant resistance unit; S5, the controller controls the heat-sensing constant resistance unit to stop working, and controls the pushing vibration component of the driving mechanism to work at a fixed time; S6, the controller controls the driving mechanism to drive the resin grinding wheel to move back to the conveyor belt components of the two conveying units, and at the same time controls the heat dissipation component of the early warning unit to work at a fixed time; S7, the controller controls the two conveying units to resume operation, and controls the exhaust electric control valve of the early warning unit to work regularly, and then repeats steps S1 to S7.

[0014] Compared with the existing technology, the advantages of an intelligent detection platform and method for resin grinding wheel strength are: 1. Through the cooperation of the machine, controller, conveying unit, interlaced column, annular mounting groove, annular electric heater, driving mechanism, top sleeve and heat-sensitive constant resistance unit, it is possible to judge whether the resin grinding wheel has holes, cracks, uneven distribution of abrasive particles and other defects that affect the strength based on the difference in thermal conductivity of the resin grinding wheel, so as to quickly judge whether the strength of the resin grinding wheel meets the use requirements and abandon the traditional mechanical impact detection method. It can not only avoid the wear of the resin grinding wheel, but also has high detection efficiency. It can be applied to the strength detection of batch resin grinding wheels and reduce the possibility of defective products flowing out.

[0015] 2. Through the cooperation of the top plate and the marking unit, when it is detected that there are factors affecting the strength of the resin grinding wheel, the defective position can be automatically marked, which is convenient for distinguishing defective products from qualified products, and also convenient for subsequent inspectors to verify the strength of the defective position.

[0016] 3. Through the set early warning unit, it can automatically measure the defect degree based on each defect area, and automatically issue an early warning when the defect frequency and defect degree of multiple resin grinding wheels at the same position are high, so as to promptly correct the possible problems in the resin grinding wheel preparation process, thereby indirectly improving the product qualification rate.

[0017] 4. Through the push vibration component set inside the driving mechanism, when the strength test of the resin grinding wheel is qualified, the heat from the annular electric heater can be used to eliminate the stress of the resin grinding wheel and improve the use effect of the resin grinding wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an intelligent detection platform for resin grinding wheel strength provided by the present invention; Figure 2 It is a schematic diagram of the internal structure of a machine platform of a resin grinding wheel strength intelligent detection platform provided by the present invention; Figure 3The invention provides a resin grinding wheel strength intelligent detection platform Figure 2 A magnified view of the structure of part A; Figure 4 It is a schematic diagram of the internal structure of a top sleeve and a top plate of a resin grinding wheel strength intelligent detection platform provided by the present invention; Figure 5 It is a schematic diagram of the internal structure of a single arc-shaped plate of a resin grinding wheel strength intelligent detection platform provided by the present invention; Figure 6 It is a schematic diagram of a top view structure of multiple arc-shaped plates of a resin grinding wheel strength intelligent detection platform provided by the present invention; Figure 7 It is a schematic diagram of the connection structure between the insulating block and the resistance rod of a resin grinding wheel strength intelligent detection platform provided by the present invention; Figure 8 It is a structural schematic diagram of a marking unit of a resin grinding wheel strength intelligent detection platform provided by the present invention; Fig. 9 The invention provides a resin grinding wheel strength intelligent detection platform Figure 4 A magnified view of the structure of part B; Fig.10 The present invention is a schematic diagram of assembling an interlaced column and a resin grinding wheel of an intelligent testing platform for strength of a resin grinding wheel provided by the present invention.

[0019] In the figure: 1 machine, 2 controller, 3 conveying unit, 31 side plate, 32 conveyor belt assembly, 33 limit plate, 34 rotating rod, 35 adjustment assembly, 4 interlaced column, 5 annular mounting groove, 6 annular electric heater, 7 driving mechanism, 71 frame, 72 vertical push electric push rod, 73 support block, 74 through hole, 8 top sleeve, 9 heat-sensitive constant resistance unit, 91 horizontal push electromagnetic push rod, 92 arc plate, 93 arc groove, 94 arc-shaped heat-conducting insulating plate, 95 arc-shaped thermistor, 96 constant resistance electric push rod, 97 insulating block, 98 conductive slip ring, 99 insulating rod, 910 resistance rod, 10 top plate, 11 marking unit, 111 liquid storage cover, 112 metering pump , 113 hollow circular plate, 114 infusion tube, 115 spray head, 116 infusion electric control valve, 117 marking paint, 12 early warning unit, 121 annular seat, 122 air storage cavity, 123 exhaust micropores, 124 air pressure detector, 125 hollow block, 126 air supply pipe, 127 air pump, 128 air supply electric control valve, 129 exhaust electric control valve, 13 push vibration assembly, 131 annular fixing groove, 132 vertical push electromagnetic push rod, 133 annular push plate, 14 heat dissipation assembly, 141 shunt pipe, 142 shunt electric control valve, 143 heat dissipation hose, 144 heat dissipation cavity, 145 radiator, 146 connecting hose, 147 exhaust pipe. DETAILED DESCRIPTION

[0020] 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.

[0021] like Figure 1-Figure 10 As shown, a resin grinding wheel strength intelligent detection platform includes a machine 1 and a controller 2 installed on the end face of the machine 1, and also includes: a conveying unit 3, the conveying unit 3 is installed on the end face of the machine 1, and is used to convey the resin grinding wheel. The conveying unit 3 includes side panels 31 fixedly installed on both sides of the upper end face of the machine 1, and the side walls of the two side panels 31 facing each other are installed with conveyor belt assemblies 32, and limit plates 33 are arranged above the two conveyor belt assemblies 32, and the side walls of the two limit plates 33 are rotatably connected with a plurality of rotating rods 34, and the side walls of the two side panels 31 are installed with adjustment assemblies 35, and the two side panels 31 are connected to the limit plates 33 on the same side through the same side adjustment assemblies 35, and the two conveyor belt assemblies 32 are electrically connected to the controller 2, and the conveyor belt assembly 32 includes high temperature resistant transmission belts, belt rollers, drive motors, bearings and other components, and the adjustment assembly 35 includes a screw and two locking nuts, and the positions of the two limit plates 33 can be adjusted according to resin grinding wheels of different diameters.

[0022] The insertion column 4 is arranged above the machine 1, and the side wall of the insertion column 4 is provided with an annular mounting groove 5, and an annular electric heater 6 is fixedly installed inside the annular mounting groove 5. The machine 1 is provided with a driving mechanism 7, and the driving mechanism 7 drives the insertion column 4 to move up and down. The driving mechanism 7 includes a frame 71 fixedly installed at the bottom of the machine 1, and a vertical push electric push rod 72 is fixedly inserted on the end face of the frame 71. A support block 73 is installed at the telescopic end of the vertical push electric push rod 72, and the insertion column 4 is installed on the top of the support block 73. A through hole 74 matching the support block 73 is opened on the end face of the machine 1, and a top push vibration component 13 is installed on the support block 73.

[0023] The top sleeve 8 is fixedly installed on the top of the conveying unit 3, and the side wall of the top sleeve 8 is provided with a heat-sensitive constant resistance unit 9, which includes a plurality of transverse electromagnetic push rods 91 fixedly plugged into the side wall of the top sleeve 8, and the telescopic end of each transverse electromagnetic push rod 91 is installed with an arc plate 92, and the inner arc surface of the arc plate 92 is provided with an arc groove 93, and the notch of the arc groove 93 is fixedly installed with an arc heat-conducting insulating plate 94, and the arc groove 93 is provided with an arc-shaped thermistor 95 inside, and the arc-shaped thermistor 95 is fixedly connected to the side wall of the arc heat-conducting insulating plate 94 on the same side, and a plurality of fixed resistance electric push rods 96 are arranged above the top plate 10, and the telescopic end of each fixed resistance electric push rod 96 is installed with an insulating block 97, and the end of the insulating block 97 A conductive slip ring 98 is fixedly inserted on the surface, an insulating rod 99 is provided on one side of each fixed-resistance electric push rod 96, and a resistor rod 910 is fixedly installed on the top of the insulating rod 99, the conductive slip ring 98 is in sliding contact with the side wall of the resistor rod 910, each arc-shaped thermistor 95 is electrically connected to the corresponding fixed-resistance electric push rod 96 through the controller 2, each horizontal electromagnetic push rod 91 is electrically connected to the controller 2, each conductive slip ring 98 and the resistor rod 910 on the same side are electrically connected to the measuring circuit of the controller 2, the arc-shaped thermistor 95 has its own resistance that decreases as the temperature increases within a certain temperature range, and an annular protective net is installed at the notch of the annular mounting groove 5 to protect the annular electric heater 6.

[0024] The top plate 10 is installed on the top of the top sleeve 8, and a marking unit 11 is installed at the bottom of the top plate 10. The controller 2 controls the marking unit 11 to work according to the current intensity output by the heat-sensitive constant resistance unit 9. The marking unit 11 includes a liquid storage cover 111 arranged on the inner side of the top sleeve 8, and the liquid storage cover 111 is installed at the bottom of the top plate 10. A metering pump 112 is fixedly installed at the bottom of the liquid storage cover 111. The liquid outlet end of the metering pump 112 is fixedly connected to a hollow circular plate 113, and a plurality of infusion tubes 114 are fixedly plugged into the side wall of the hollow circular plate 113, and one end of each infusion tube 114 away from the hollow circular plate 113 is fixed. It is connected to a spray head 115, and an infusion electric control valve 116 is installed at one end of each infusion tube 114 away from the hollow circular plate 113. The controller 2 controls the opening and closing of the infusion electric control valve 116 according to the current intensity of the connection circuit between each conductive slip ring 98 and the resistor rod 910 on the same side. The metering pump 112 is electrically connected to the controller 2. The interior of the liquid storage cover 111 is filled with marking paint 117. The end surface of the top plate 10 is fixedly connected with a liquid adding tube connected to the liquid storage cover 111 for replenishing the marking paint 117 into the liquid storage cover 111. The marking paint 117 is made of thermosetting paint for easy curing.

[0025] The early warning unit 12 is installed on the top of the top plate 10. The controller 2 controls the early warning unit 12 to work according to the current intensity output by the heat-sensing constant resistance unit 9. The early warning unit 12 includes an annular seat 121 fixedly installed on the top of the top plate 10, and a plurality of air storage cavities 122 are arranged inside the annular seat 121. The side walls of each air storage cavity 122 are provided with exhaust micropores 123. The upper cavity wall of each air storage cavity 122 is fixedly plugged with an air pressure detector 124. A hollow block 125 is fixedly installed on the top of the top plate 10, and an air supply pipe 126 is fixedly connected between the hollow block 125 and each air storage cavity 122. An air pump 127 is fixedly installed on the top of the hollow block 125, and the air outlet end of the air pump 127 is connected to the inner wall of the hollow block 125. The parts are interconnected, and each air supply pipe 126 is equipped with an air supply electric-controlled valve 128, and the air inlet end of each exhaust micropore 123 is equipped with an exhaust electric-controlled valve 129. Each air pressure detector 124, each air supply electric-controlled valve 128, each exhaust electric-controlled valve 129 and the air pump 127 are electrically connected to the controller 2. Each fixed-resistance electric push rod 96 and each insulating rod 99 are installed in the corresponding air storage cavity 122. The hollow block 125 is equipped with a heat dissipation component 14 connected to each arc plate 92. Each resistor rod 910 and the corresponding conductive slip ring 98 are electrically connected to the air pump 127 through the controller 2. After detecting that the air pressure reaches the threshold, the air pressure detector 124 will feedback an electrical signal to the controller 2.

[0026] The pushing vibration assembly 13 includes an annular fixed groove 131 opened at the outer edge of the top of the support block 73, and two vertical pushing electromagnetic push rods 132 are fixedly inserted at the bottom of the annular fixed groove 131, and the telescopic ends of the two vertical pushing electromagnetic push rods 132 are commonly fixedly connected to the same annular pushing plate 133, and the two vertical pushing electromagnetic push rods 132 are both electrically connected to the controller 2, and the top of the annular pushing plate 133 is lower than the notch of the annular fixed groove 131.

[0027] The heat dissipation assembly 14 includes a shunt pipe 141 fixedly plugged into the side wall of the hollow block 125, and a shunt electric control valve 142 is installed inside the shunt pipe 141, and a heat dissipation hose 143 is fixedly connected to the end of the shunt pipe 141 away from the hollow block 125, and a heat dissipation cavity 144 is opened inside each arc plate 92, and a radiator 145 is fixedly plugged into the cavity wall of the heat dissipation cavity 144, and one side wall of the radiator 145 is arranged on the inner side of the arc groove 93, and a connecting hose 146 is fixedly connected between two adjacent heat dissipation cavities 144, and the heat dissipation hose 143 is connected to one of the heat dissipation cavities 144, and an exhaust pipe 147 is arranged on the inner side of the top sleeve 8 away from the heat dissipation hose 143, and the exhaust pipe 147 is connected to the heat dissipation cavity 144 on the same side, the shunt electric control valve 142 is electrically connected to the controller 2, and the radiator 145 is composed of a heat conduction plate and a plurality of heat sinks.

[0028] The operating principle of the present invention is now described as follows: the controller 2 is started, and the controller 2 controls the two conveyor belt assemblies 32 to work intermittently, and the conveyor belt assemblies 32 work for 5 seconds at a certain interval (the interval is controlled by the controller 2), and at the same time, the resin grinding wheel to be tested is placed on the two conveyor belt assemblies 32 through an external loading device, for example, the resin grinding wheel is placed at the feeding end of the two conveyor belt assemblies 32 through a loading manipulator, and when the two conveyor belt assemblies 32 work for 5 seconds, the resin grinding wheel will be driven to move toward the through hole 74 of the machine table 1, so that the resin grinding wheel moves to the top of the through hole 74; During the interval when the conveyor belt assembly 32 is suspended, the controller 2 controls the vertical push electric push rod 72 to work for 6 seconds. At this time, the vertical push electric push rod 72 drives the support block 73 to drive the insertion column 4 to move upward. After the insertion column 4 moves upward, it will pass through the center hole of the resin grinding wheel (refer to Fig.10 , the dotted part in the figure is the resin grinding wheel, and the direction of the dotted arrow is the moving direction of the support block 73 and the interlaced column 4), and the support block 73 will contact the bottom of the resin grinding wheel after moving up, and push the resin grinding wheel to move up synchronously. After the vertical push electric push rod 72 finishes working, the resin grinding wheel is between each arc plate 92, and then the controller 2 will control each horizontal push electromagnetic push rod 91 to work, and each horizontal push electromagnetic push rod 91 can push the arc plate 92 on the same side to move toward the resin grinding wheel, so that the side wall of each arc-shaped heat-conducting insulating plate 94 is attached to the circumferential outer wall of the resin grinding wheel. Then, the controller 2 will control the annular electric heater 6 to work, and the heating temperature of the annular electric heater 6 is 150℃±1℃, and the heat generated by the annular electric heater 6 will be conducted to the inner wall of the resin grinding wheel, and then conducted to the outer wall through the inner wall of the resin grinding wheel. Since each arc-shaped heat-conducting insulating plate 94 is attached to the circumferential outer wall of the vertical grinding wheel, the heat will be conducted. To each arc-shaped heat-conducting insulating plate 94, and finally conduct the heat to the arc-shaped thermistor 95 through each arc-shaped heat-conducting insulating plate 94. After the controller 2 controls the annular electric heater 6 to work for 30 seconds, the controller 2 connects the connection circuits of each arc-shaped thermistor 95 and each fixed-resistance electric push rod 96. Since the temperature at the arc-shaped thermistor 95 increases, the resistance of each arc-shaped thermistor 95 decreases (the arc-shaped thermistor 95 has its own resistance decreasing synchronously with the increase of temperature within the range of 0°C to 200°C). At this time, the connection circuit resistance of each fixed-resistance electric push rod 96 and the corresponding arc-shaped thermistor 95 decreases, thereby increasing the current intensity passing into each fixed-resistance electric push rod 96. After each fixed-resistance electric push rod 96 works for 5 seconds, the controller 2 controls each fixed-resistance electric push rod 96 to disconnect the connection circuits of each arc-shaped thermistor 95, and controls the annular electric heater 6 to stop working. When there are holes, cracks, less abrasive grains distributed inside the resin grinding wheel, etc., since the holes and cracks are filled with air, and the heat conduction efficiency of air is lower than that of the resin grinding wheel, when the heat is conducted to the holes and cracks, the heat will be blocked, thereby reducing the heat conducted to the arc-shaped thermistor 95 at the corresponding position. The thermal conductivity of the abrasive grains (such as silicon carbide, diamond and other abrasive grains) of the resin grinding wheel is generally higher than that of the resin material. Therefore, when the abrasive grains of the resin grinding wheel are less distributed in a local position due to uneven distribution, the thermal conductivity of the position will also be reduced, resulting in a decrease in the heat conducted to the arc-shaped thermistor 95 at the corresponding position. Therefore, when there are holes, cracks, less abrasive grains distributed inside the resin grinding wheel, etc., which affect the strength of the resin grinding wheel, within the same time (i.e., within 30 seconds of the annular electric heater 6 working), the heat that can be conducted to the arc-shaped thermistor 95 at the corresponding position is relatively low. Therefore, during the 5 seconds of the operation of the fixed-resistance electric push rod 96, due to the low heat of the arc-shaped thermistor 95, the fixed-resistance electric push rod 96 maintains high resistance operation, so the fixed-resistance electric push rod 96 pushes the insulating block 97 upward by a shorter distance in the same time (the upward movement distance of the insulating block 97 is less than 5 cm). After the fixed-resistance electric push rod 96 finishes the timing operation, the length of the resistor rod 910 connected to the conductive slip ring 98 on the same side and the measuring circuit of the controller 2 is longer (that is, the length from the top of the resistor rod 910 to the conductive slip ring 98 is longer, and the length of this part is greater than 7 cm). At this time, the current intensity of the connection loop between the conductive slip ring 98 and the resistor rod 910 detected by the measuring circuit of the controller 2 is less than 10 mA, and when the resin grinding wheel has no holes, cracks, less abrasive distribution and other defective areas, the current intensity of the connection loop between the conductive slip ring 98 and the resistor rod 910 detected by the controller 2 is greater than 10 mA (including 10 mA); After the fixed resistance electric push rod 96 works, if there are some conductive slip rings 98 and the resistance rod 910 whose connection loop current intensity is lower than 10mA (that is, the strength of the resin grinding wheel does not meet the use requirements), the controller 2 starts the metering pump 112 to work, and controls the infusion electric control valve 116 at the corresponding position to open, the metering pump 112 can extract the marking paint 117 inside the liquid storage cover 111, and spray the marking paint 117 through the hollow circular plate 113 and the infusion tube 114 through the spray head 115, so that the defective area can be sprayed and marked, which is convenient for subsequent manual or automatic feeding equipment to distinguish the feeding, after the metering pump 112 and the infusion electric control valve 116 work for 4 seconds, the controller 2 controls the metering pump 112 to stop working, and controls the corresponding infusion electric control valve 116 to shut down; At the same time, if the current intensity of the connection loop between some conductive slip rings 98 and resistor rods 910 is lower than 10mA, the controller 2 will control the corresponding conductive slip rings 98 and the connection loop between the resistor rods 910 and the measuring circuit of the controller 2 to be disconnected, and the connection loop between the lower end of the resistor rod 910 and the conductive slip ring 98 and the air pump 127 to be connected. Since the upward movement distance of the conductive slip ring 98 is relatively small (less than 5 cm), the length of the connection loop between the lower end of the resistor rod 910 and the conductive slip ring 98 and the air pump 127 is also relatively small (less than 8 cm), and when the hole of the resin grinding wheel is When there are more holes, more cracks or less abrasive particles, the heat conducted to the arc-shaped thermistor 95 is less. At this time, the upward movement distance of the conductive slip ring 98 is smaller, so the length of the resistor rod 910 connected to the connection loop between the conductive slip ring 98 and the air pump 127 is shorter. Therefore, when the degree of defect in a certain area of ​​the resin grinding wheel is greater, the current controlled by the controller 2 to pass into the air pump 127 is greater. When the controller 2 controls the air pump 127 to work, it will control the air supply electric control valve 128 at the corresponding position to be energized and opened. After the air supply electric control valve 128 works for 5 seconds, the controller 2 will control The controller 2 controls the air supply electric control valve 128 to be powered off. If there is only one defective area, the controller 2 will also control the air pump 127 to stop working. If there are more than two defective areas, the controller 2 will control the next air supply electric control valve 128 to be powered on and opened in a clockwise order after controlling the air supply electric control valve 128 to stop working, and connect the lower ends of the conductive slip ring 98 and the resistor rod 910 corresponding to the next defective area to the connection circuit with the air pump 127, so that air can be filled into each air storage cavity 122 according to the degree of defect of each defective area (defective area). When the degree is greater, the current intensity introduced into the air pump 127 is greater, so more air is filled into the air storage chamber 122 in the same time). After all the air storage chambers 122 corresponding to the defective areas are filled with air, the controller 2 controls the air pump 127 to stop working (wherein, each conductive slip ring 98 corresponds to a number with the resistor rod 910 on the same side, and the number size increases in a clockwise direction, such as a1, a2, and a3. When there are two defective areas, the controller 2 will control the air to be introduced into each air storage chamber 122 in this order); When the current intensity of the connection loop between all the conductive slip rings 98 and the resistor rod 910 is greater than 10mA (that is, the strength of the resin grinding wheel meets the use requirements), the controller 2 controls the marking unit 11 and the early warning unit 12 not to work, and controls each horizontal push electromagnetic push rod 91 to stop working. At this time, each arc plate 92 is separated from the resin grinding wheel. At the same time, the controller 2 controls the two vertical push electromagnetic push rods 132 to work. The two vertical push electromagnetic push rods 132 are intermittently energized. When the vertical push electromagnetic push rods 132 are energized, they will push the annular push plate 133 to move upward, so that the resin grinding wheel can be pushed upward by the annular push plate 133. When the vertical push electromagnetic push rods 132 are powered off, the annular push plate 133 moves back and resets. Under the action of gravity, the resin grinding wheel falls back. The vertical push electromagnetic push rods 132 are powered on for 1 second and then powered off for 1 second. The power-on frequency is 15 times, so that the resin grinding wheel can be reciprocated up and down to generate vibration. Since the resin grinding wheel has been heated by the annular electric heater 6 before, the heat can be used to make the material The material expands evenly, the molecular chain is rearranged, the yield strength is reduced, and the stress concentration is relieved. Under the action of vibration, the material can be caused to slip at a microscopic dislocation, consume energy by the damping effect, and the stress is redistributed and released. Through the synergistic effect of heating and vibration, the stress of the resin grinding wheel can be eliminated as much as possible when the strength of the resin grinding wheel meets the use requirements, and the use effect of the resin grinding wheel can be further improved (during the manufacturing process of the resin grinding wheel, the thermal expansion coefficients of the abrasive grains and the resin binder are different, the shrinkage is inconsistent during curing, and the molding pressure is uneven, resulting in internal stress. By eliminating the stress, the dimensional stability of the grinding wheel can be improved, the risk of deformation and cracking during use can be reduced, the service life can be extended, and the grinding accuracy can be improved, and the premature shedding of the abrasive grains caused by stress can be avoided, so as to ensure the stability of the grinding wheel performance). When the current intensity of the connection loop between some conductive slip rings 98 and the resistor rod 910 is less than 10mA, it means that the resin grinding wheel has a strength defect. At this time, the controller 2 will not control the vertical electromagnetic push rod 132 to perform the stress elimination work; After the controller 2 controls the marking unit 11 and the early warning unit 12 to finish working, or the controller 2 controls the pushing vibration assembly 13 to finish working, the controller 2 controls the horizontal electromagnetic push rod 91 to stop working, and controls the vertical electric push rod 72 to drive the support block 73 to move back and reset, so that the resin grinding wheel after detection falls back onto the two conveyor belt assemblies 32, and then the controller 2 controls the two conveyor belt assemblies 32 to resume working, and after the conveyor belt assemblies 32 work for 5 seconds, the above detection work is repeated for the next resin grinding wheel; In the process where the controller 2 controls the vertical electric push rod 72 to drive the resin grinding wheel to move back, the controller 2 controls the air pump 127 to work again, and controls the shunt electric control valve 142 to be powered on and opened. At this time, the air pump 127 sucks in the external cold air flow and transports it to the heat dissipation cavity 144 through the hollow block 125, the shunt pipe 141, and the heat dissipation hose 143, and through each connecting hose 146, each cold air flow passes through each heat dissipation cavity 144 and is finally discharged through the tail pipe 147. Since the temperature inside each heat dissipation cavity 144 is reduced, the heat inside each arc groove 93 will be conducted to the heat dissipation cavity through the radiator 145 (the radiator 145 is composed of a heat conduction plate and a plurality of heat sinks) 144, so that the arc-shaped thermistor 95 in each arc-shaped groove 93 can be cooled and cooled to avoid affecting the detection of the next resin grinding wheel. After the controller 2 controls the conveyor belt assembly 32 to resume work for 5 seconds, the controller 2 controls the air pump 127 and the diversion electric control valve 142 to stop working and end the heat dissipation work. Secondly, within 5 seconds of the controller 2 controlling the conveyor belt assembly 32 to resume work, the controller 2 will control the exhaust electric control valve 129 inside each exhaust micropore 123 to be energized and opened for 5 seconds. At this time, the excess air inside each air storage cavity 122 will be discharged through the exhaust micropore 123. When the degree of defect of the resin grinding wheel is large, the air delivered to the inside of the air storage cavity 122 There is more air, and the amount of air exhausted through the exhaust micropores 123 within 5 seconds is limited (the aperture of the air outlet end of the exhaust micropores 123 is 0.5 mm). Therefore, when the defect frequency at the same position of the resin grinding wheel is continuously detected to be high, or the degree of defect is large, more air is transported to the air storage chamber 122 in a short time, and the exhaust volume of the exhaust micropores 123 is limited. Therefore, the air pressure inside the air storage chamber 122 is getting higher and higher. When the air pressure detector 124 detects that the air pressure reaches a threshold value (the threshold value is set by the user according to the use requirements, for example, the air pressure is 1MPa), the air pressure detector 124 will feedback an electrical signal to the controller 2, and the controller 2 will send a signal to the controller 2 through its own voice module. The user issues a voice alarm prompt, and the personnel should promptly check the cause of the defect, for example, when checking whether there is a problem with the mold for preparing the resin grinding wheel, so that when the defect frequency is high and the defect degree is large, the personnel can be automatically reminded to trace the cause of the defect in time to reduce the amount of defective products. For occasional defects (such as occasional uneven distribution of abrasive particles), the air inside the air storage chamber 122 can be discharged in time due to multiple exhausts of the exhaust micropores 123, and the air will not accumulate, so no warning information will be generated (wherein, the external feeding equipment places the resin grinding wheel on the two conveyor belt assemblies 32 according to a specific orientation, for example, with the installation mark of the resin grinding wheel as a reference, the reference reference Fig.10 The reference point of each resin grinding wheel is placed on the conveyor belt assembly 32 at the same position, so that the various detection areas of each resin grinding wheel correspond to each other, which is convenient for defect tracing of the resin grinding wheel).

[0029] 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 resin grinding wheel strength intelligent detection platform, comprising a machine platform (1) and a controller (2) mounted on the end surface of the machine platform (1), characterized in that: Also includes: A conveying unit (3) is mounted on the end surface of the machine platform (1) and is used to convey the resin grinding wheel; A penetration column (4) is arranged above the machine platform (1); a side wall of the penetration column (4) is provided with an annular mounting groove (5); an annular electric heater (6) is fixedly installed inside the annular mounting groove (5); the machine platform (1) is provided with a driving mechanism (7); the driving mechanism (7) drives the penetration column (4) to move up and down; A top sleeve (8) is fixedly mounted on the top of the conveying unit (3), and a heat-sensitive constant resistance unit (9) is provided on the side wall of the top sleeve (8); A top plate (10) is mounted on the top of the top sleeve (8); a marking unit (11) is mounted on the bottom of the top plate (10); and the controller (2) controls the marking unit (11) to operate according to the current intensity output by the heat-sensing constant resistance unit (9); The early warning unit (12) is installed on the top of the top plate (10), and the controller (2) controls the operation of the early warning unit (12) according to the current intensity output by the heat-sensing constant resistance unit (9).

2. The intelligent testing platform for resin grinding wheel strength according to claim 1, characterized in that: The conveying unit (3) comprises side panels (31) fixedly mounted on both sides of the upper end surface of the machine platform (1); the side walls of the two side panels (31) facing each other are both mounted with conveyor belt assemblies (32); a limit plate (33) is arranged above the two conveyor belt assemblies (32); the side walls of the two limit plates (33) are rotatably connected to a plurality of rotating rods (34); the side walls of the two side panels (31) are both mounted with adjustment assemblies (35); the two side panels (31) are both connected to the limit plate (33) on the same side via the adjustment assemblies (35) on the same side; and the two conveyor belt assemblies (32) are both electrically connected to the controller (2).

3. The intelligent testing platform for resin grinding wheel strength according to claim 2 is characterized in that: The driving mechanism (7) comprises a frame (71) fixedly mounted at the bottom of the machine platform (1); a vertical push electric push rod (72) is fixedly plugged into the end surface of the frame (71); a support block (73) is mounted on the telescopic end of the vertical push electric push rod (72); and a through-hole (74) matching the support block (73) is formed on the end surface of the machine platform (1); and a top push vibration assembly (13) is mounted on the support block (73).

4. The intelligent testing platform for resin grinding wheel strength according to claim 3 is characterized in that: The heat-sensing constant resistance unit (9) comprises a plurality of transverse electromagnetic push rods (91) fixedly plugged into the side wall of the top sleeve (8), the telescopic end of each of the transverse electromagnetic push rods (91) being mounted with an arc plate (92), the inner arc surface of the arc plate (92) being provided with an arc groove (93), the notch of the arc groove (93) being fixedly mounted with an arc heat-conducting insulating plate (94), the interior of the arc groove (93) being provided with an arc-shaped thermal sensitive element (95), and the arc-shaped thermal sensitive element (95) being fixedly connected to the side wall of the arc heat-conducting insulating plate (94) on the same side, and a plurality of constant resistance electric push rods (96) being mounted above the top plate (10), the telescopic end of each of the constant resistance electric push rods (96) being provided with an arc-shaped thermal sensitive element (95) being fixedly connected to the side wall of the arc heat-conducting insulating plate (94) on the same side. An insulating block (97) is installed, and a conductive slip ring (98) is fixedly inserted on the end surface of the insulating block (97); an insulating rod (99) is provided on one side of each fixed-resistance electric push rod (96), and a resistance rod (910) is fixedly installed on the top of the insulating rod (99); the conductive slip ring (98) is in sliding contact with the side wall of the resistance rod (910); each arc-shaped thermistor (95) is electrically connected to the corresponding fixed-resistance electric push rod (96) through the controller (2); each horizontal electromagnetic push rod (91) is electrically connected to the controller (2); and each conductive slip ring (98) and the resistance rod (910) on the same side are electrically connected to the measurement circuit of the controller (2).

5. The intelligent testing platform for resin grinding wheel strength according to claim 4 is characterized in that: The marking unit (11) comprises a liquid storage cover (111) arranged on the inner side of the top sleeve (8), and the liquid storage cover (111) is installed on the bottom of the top plate (10), a metering pump (112) is fixedly installed on the bottom of the liquid storage cover (111), a liquid outlet end of the metering pump (112) is fixedly connected to a hollow circular plate (113), and a plurality of infusion tubes (114) are fixedly plugged into the side wall of the hollow circular plate (113), and each of the infusion tubes (114) is away from a part of the hollow circular plate (113). The ends of the liquid infusion tubes (114) are fixedly connected to a spray head (115); an end of each liquid infusion tube (114) away from the hollow circular plate (113) is installed with a liquid infusion electric control valve (116); the controller (2) controls the opening and closing of the liquid infusion electric control valve (116) according to the current intensity of the connection circuit between each conductive slip ring (98) and the resistor rod (910) on the same side; the metering pump (112) is electrically connected to the controller (2); and the interior of the liquid storage cover (111) is filled with marking paint (117).

6. The intelligent testing platform for resin grinding wheel strength according to claim 5, characterized in that: The early warning unit (12) comprises an annular seat (121) fixedly mounted on the top of the top plate (10), and a plurality of air storage cavities (122) are arranged inside the annular seat (121), and each of the air storage cavities (122) has a side wall provided with an exhaust microhole (123), and an upper cavity wall of each of the air storage cavities (122) is fixedly plugged with an air pressure detector (124), a hollow block (125) is fixedly mounted on the top of the top plate (10), and an air supply pipe (126) is fixedly connected between the hollow block (125) and each of the air storage cavities (122), an air pump (127) is fixedly mounted on the top of the hollow block (125), and an air outlet end of the air pump (127) is connected to the inside of the hollow block (125), and each of the air supply pipes (126) is fixedly connected to the upper cavity wall of each of the air storage cavities (122). An air supply electric control valve (128) is installed inside the air pipe (126), an exhaust electric control valve (129) is installed inside the air inlet end of each exhaust micropore (123), each air pressure detector (124), each air supply electric control valve (128), each exhaust electric control valve (129) and the air pump (127) are electrically connected to the controller (2), each fixed resistance electric push rod (96) and each insulating rod (99) are installed inside the corresponding air storage cavity (122), the hollow block (125) is installed with a heat dissipation component (14) connected to each arc plate (92), and each resistance rod (910) and a corresponding conductive slip ring (98) are electrically connected to the air pump (127) through the controller (2).

7. The intelligent testing platform for resin grinding wheel strength according to claim 6, characterized in that: The push vibration assembly (13) comprises an annular fixed groove (131) provided at the outer edge of the top of the support block (73); two vertical push electromagnetic push rods (132) are fixedly inserted into the bottom of the annular fixed groove (131); and the telescopic ends of the two vertical push electromagnetic push rods (132) are fixedly connected to the same annular push plate (133); and the two vertical push electromagnetic push rods (132) are both electrically connected to the controller (2).

8. The intelligent testing platform for resin grinding wheel strength according to claim 7, characterized in that: The heat dissipation assembly (14) comprises a shunt pipe (141) fixedly plugged into the side wall of the hollow block (125), and a shunt electric control valve (142) is installed inside the shunt pipe (141), and one end of the shunt pipe (141) away from the hollow block (125) is fixedly connected to a heat dissipation hose (143), and each of the arc-shaped plates (92) is provided with a heat dissipation cavity (144) inside, and a radiator (145) is fixedly plugged into the cavity wall of the heat dissipation cavity (144), and the radiator (145) One side wall is arranged on the inner side of the arc-shaped groove (93), and a connecting hose (146) is fixedly connected between two adjacent heat dissipation chambers (144), and the heat dissipation hose (143) is connected to one of the heat dissipation chambers (144). An exhaust pipe (147) is arranged on the inner side of the top sleeve (8) away from the heat dissipation hose (143), and the exhaust pipe (147) is connected to the heat dissipation chamber (144) on the same side, and the diversion electric control valve (142) is electrically connected to the controller (2).

9. A method applied to the resin grinding wheel strength intelligent detection platform of claim 8, characterized in that: The method comprises the following steps: S1, starting the controller (2), and placing the resin grinding wheels to be tested on the conveyor belt assemblies (32) of the two conveyor units (3) in sequence, and the controller (2) controls the conveyor belt assemblies (32) to work intermittently, so as to drive each resin grinding wheel to be tested to move; S2, when the controller (2) controls the conveyor belt assembly (32) to stop working, the controller (2) controls the driving mechanism (7) to work, so that the insertion column (4) passes through the center hole of the resin grinding wheel and drives the resin grinding wheel to move between the heat-sensitive fixed resistance units (9); S3, the controller (2) controls the annular electric heater (6) and the heat-sensitive constant resistance unit (9) to work synchronously and in a timely manner; S4, the controller (2) controls the marking unit (11) and the early warning unit (12) to work synchronously according to the current intensity output by the heat-sensing constant resistance unit (9); S5, the controller (2) controls the heat-sensing constant resistance unit (9) to stop working, and controls the pushing vibration component (13) of the driving mechanism (7) to perform timed work; S6, the controller (2) controls the driving mechanism (7) to drive the resin grinding wheel to move back to the conveyor belt components (32) of the two conveying units (3), and simultaneously controls the heat dissipation component (14) of the early warning unit (12) to perform timing operation; S7, the controller (2) controls the two conveying units (3) to resume operation, and controls the exhaust electric control valve (129) of the early warning unit (12) to operate at a fixed time, and then repeats steps S1 to S7.

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