An impeller inner diameter detection head and an impeller inner diameter and outer circle runout detection device

Abstract

The utility model relates to impeller detection technical field discloses a kind of impeller inner diameter detection head and impeller inner diameter and outer circle runout detection device, including pneumatic probe, the outer wall of pneumatic probe is provided with upper, middle, lower three spray holes along axial interval, spray hole is respectively corresponding the upper, middle, lower three detection points of impeller inner diameter, and pneumatic probe inside is equipped with three independent air passages, air passage and spray hole one-to-one correspondence and independent communication, air passage is used to access gas source to spray hole delivery airflow.The utility model discloses, the device passes through the three spray holes of pneumatic probe axial interval, without multiple adjustments impeller position can detect the upper, middle, lower three detection points of impeller inner diameter, significantly improve detection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of impeller detection technology, and in particular to an impeller inner diameter detection head and an impeller inner diameter and outer circle runout detection device. Background Technology

[0002] The impeller is a core component of the automotive turbocharging system. It is necessary to strictly test two parameters: inner diameter and circular runout. As the proportion of turbocharged models increases, the demand for impeller production is also increasing. Traditional manual inspection is no longer suitable for the efficiency requirements of mass production.

[0003] Current impeller inspection technologies have several prominent drawbacks: First, the efficiency of inner diameter inspection is low. Most existing inner diameter inspection equipment uses single-nozzle inspection, which requires multiple adjustments to the impeller height to obtain inner diameter data at different points when inspecting the dimensions of the impeller's inner diameter. This is inefficient, time-consuming, and labor-intensive. Second, the inspection equipment is scattered. Inner diameter inspection and circular runout inspection need to be completed on two separate machines. The degree of automation is low, and manual handling of the impeller to transfer workstations is time-consuming and labor-intensive. Furthermore, manual intervention can easily lead to impeller bumps and scratches. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an impeller inner diameter detection head and an impeller inner diameter and outer circle runout detection device, aiming to improve the problem of low inner diameter detection efficiency in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an impeller inner diameter detection head, including a pneumatic probe, wherein the outer wall of the pneumatic probe is provided with three nozzles of upper, middle and lower spacing along the axial direction, the nozzles corresponding to the upper, middle and lower detection points of the impeller inner diameter respectively, and the pneumatic probe is provided with three independent air channels inside, the air channels corresponding one-to-one with the nozzles and independently connected, the air channels being used to connect to an air source to deliver airflow to the nozzles.

[0006] A device for detecting the inner diameter and outer diameter runout of an impeller includes a base and a cover. The base is fixed with a support column for supporting the cover. The base is provided with a feeding belt, a discharge belt, a defective product belt, an inner diameter detection component, a runout detection component, and several material sensors. The side and bottom of the cover are respectively provided with a display panel and a mechanical claw.

[0007] Preferably, the inner diameter detection component includes a limiting frame, a carrying frame, a pressure transmitter, a third support frame, an air duct, and a compressed air supply unit. The pneumatic probe is fixed above the carrying frame, the carrying frame is fixed above the third support frame, the limiting frame is located on the outer periphery of the carrying frame, and both the third support frame and the limiting frame are located on the base. The compressed air supply unit is connected to the air duct through the air duct. The three pressure transmitters are respectively located in the areas of the three air ducts near the pneumatic probe, and the pressure transmitters are electrically connected to the control center.

[0008] Preferably, the circular runout detection assembly includes a displacement detection unit for detecting the impeller's circular runout and a rotation and fixing unit for rotating and fixing the impeller. The rotation and fixing unit and the displacement detection unit work together to detect the impeller's circular runout.

[0009] Preferably, the displacement detection unit includes a second support frame, a second cylinder device, an electronic displacement sensor, and a second slider; the second support frame is fixed on the base, the second cylinder device is fixed on the second support frame, and its output end is connected to the second slider; a T-shaped strip is integrally formed on the bottom surface of the second slider, and a T-shaped groove adapted to the T-shaped strip is opened on the top surface of the second cylinder device, the T-shaped strip being embedded in the T-shaped groove; the electronic displacement sensor is fixed on the second slider.

[0010] Preferably, the rotating fixing unit includes a fixing component for fixing the impeller and a rotating component for rotating the impeller.

[0011] Preferably, the fixing assembly includes a first support frame, a first cylinder device, an expansion sleeve, a push rod, a connecting rod, and a first slider; the first support frame is fixed on the base, and the first cylinder device is connected to the rotating unit; the first cylinder device has a slidable piston inside, the bottom end of the push rod is fixed to the piston, the top of the push rod is hinged to the first slider through the connecting rod, the bottom of the first slider has a limiting strip, the top of the first cylinder device has a limiting groove, the limiting strip is embedded in the limiting groove and can slide along it, and the expansion sleeve is fixed to the top surface of the first slider.

[0012] Preferably, the rotating assembly includes a rotary motor and a pneumatic rotary sleeve; the rotary motor is fixed on the first support frame, and its output end is connected to the shaft at the bottom of the first cylinder device via a coupling; the bottom side of the pneumatic rotary sleeve is integrally formed with a fixing seat, and is equipped with bolts matching the fixing seat; the fixing seat is detachably fixed to the first support frame by bolts, and the first cylinder device and the pneumatic rotary sleeve remain coaxial.

[0013] Preferably, the pneumatic rotary sleeve is provided with a first sleeve air hole and a second sleeve air hole, and the first cylinder device is provided with a first cylinder air hole and a second cylinder air hole. The first sleeve air hole communicates with the first cylinder air hole, and the second sleeve air hole communicates with the second cylinder air hole. The outer periphery of the first cylinder device is provided with three outwardly extending annular protrusions spaced apart in the circumferential direction. Two adjacent annular protrusions and the end face of the pneumatic rotary sleeve together form two sealed cavities. Each annular protrusion is provided with two grooves, and a wear-resistant sealing ring is adapted to be installed in the grooves. The bottom end of the pneumatic rotary sleeve extends inward with a stop block, and a bearing is assembled between the stop block and the bottommost annular protrusion.

[0014] Preferably, the feeding belt, the discharge belt, and the defective product belt are each equipped with a corresponding conveyor belt motor, and several material sensors are respectively located on both sides of the feeding belt, the discharge belt, and the defective product belt, as well as on both sides of the detection station of the inner diameter detection component and the circular runout detection component, and all material sensors are connected to the control center signal.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, three nozzles (upper, middle, and lower) are axially spaced on the outer wall of the pneumatic probe, and three independent internal air channels are connected to the nozzles one by one. The three independent air channels are opened and released in a preset order, so that each nozzle can independently and stably deliver airflow to the corresponding impeller inner diameter detection point. This solves the problem that in traditional impeller inner diameter detection, the detection of a single nozzle can only detect a single point, and when multiple points of the impeller need to be detected, the impeller position needs to be adjusted frequently by hand, resulting in low efficiency.

[0017] 2. In this utility model, by integrating the base, cover, support column, feeding belt, discharge belt, defective product belt, various detection components and material sensors, the problems of scattered traditional impeller detection equipment, multiple manual intervention links and disconnected detection process are solved, and the overall automation level of the equipment is significantly improved.

[0018] 3. In this utility model, the fixing component achieves uniform expansion of the impeller inner hole through the linkage structure of the piston, push rod, connecting rod and the first slider, as well as the guiding cooperation of the limiting strip and the limiting groove. This allows it to adapt to impellers of various specifications, increases the fixing firmness, and provides stable reference conditions for circular runout detection. Attached Figure Description

[0019] Figure 1 This is a cross-sectional view of the pneumatic probe of this utility model;

[0020] Figure 2 This is an overall view of the present utility model;

[0021] Figure 3This is a structural diagram of the feeding belt, the discharge belt, and the defective product belt;

[0022] Figure 4 This is a schematic diagram of the inner diameter measurement component.

[0023] Figure 5 This is a schematic diagram of the circular runout detection component.

[0024] Figure 6 This is a schematic diagram of the displacement detection unit structure;

[0025] Figure 7 This is a schematic diagram of a rotating fixed unit structure;

[0026] Figure 8 This is a schematic diagram of the structure in the contracted state of the expansion sleeve;

[0027] Figure 9 This is a schematic diagram of the expansion sleeve in its expanded state.

[0028] Figure 10 A schematic diagram of the connecting rod, push rod, expansion sleeve and first slider assembly structure;

[0029] Figure 11 A schematic diagram of the first cylinder assembly and the expansion sleeve structure;

[0030] Figure 12 for Figure 11 Enlarged view of point A in the image;

[0031] Figure 13 Schematic diagram of the first support frame and rotary motor structure;

[0032] Figure 14 This is a schematic diagram of the fixing seat and bolt structure;

[0033] Figure 15 A schematic diagram of the pneumatic rotary sleeve and the first cylinder assembly;

[0034] Figure 16 for Figure 15 Enlarged view at point B in the middle;

[0035] Figure 17 This is a schematic diagram of the annular protrusion and wear-resistant sealing ring structure.

[0036] Legend:

[0037] 1. Machine cover; 2. Support column; 3. Base; 4. Feed belt; 5. Inner diameter detection component; 5-1. Nozzle; 5-2. Air passage; 5-3. Air duct; 5-4. Pressure transmitter; 5-5. Limiting frame; 5-6. Pneumatic probe; 5-7. Loading rack; 5-8. Compressed air supply unit; 5-9. Third support frame; 6. Mechanical gripper; 7. Circular runout detection component; 7-1. Pneumatic rotating sleeve; 7-2. First support frame; 7-3. Rotary motor; 7-4. First cylinder assembly; 7-5. Expansion sleeve; 7-6. Second support frame; 7-7. Second cylinder assembly; 7-8. Electronic displacement sensor; 7-9. Shaft 7-10. Support; 7-11. Top rod; 7-12. Connecting rod; 7-13. First slider; 7-14. Limiting strip; 7-15. Limiting groove; 7-16. Second slider; 7-17. Piston; 7-18. T-slot; 7-19. First air hole of cylinder; 7-20. Second air hole of cylinder; 7-21. First air hole of sleeve; 7-22. Second air hole of sleeve; 7-23. Wear-resistant sealing ring; 7-24. Fixed seat; 7-25. Annular protrusion; 7-26. Bolt; 7-27. Stop block; 8. Discharge belt; 9. Defective product belt; 10. Conveyor belt motor; 11. Material sensor; 12. Display panel. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] Example 1:

[0040] Reference Figure 1 and Figure 4A pneumatic probe 5-6 for detecting the inner diameter of an impeller is disclosed. The outer wall of the pneumatic probe 5-6 is axially spaced with three nozzles 5-1 (upper, middle, and lower) that cover the key detection area of ​​the inner diameter. Each nozzle 5-1 precisely corresponds to one of the three detection points on the impeller's inner diameter for detection. The pneumatic probe 5-6 also has three independent air passages 5-2 inside to ensure independent airflow delivery. Each air passage 5-2 corresponds to and is independently connected to one of the nozzles 5-1. The air passages 5-2 are used to connect to an air source to deliver air to the impeller. The nozzle 5-1 stably delivers the test airflow, and the three independent air passages 5-2 are sequentially opened and closed in a preset order. This test head is part of the inner diameter dimension detection assembly 5, which also includes a limiting frame 5-5 for limiting the impeller, a carrier frame 5-7 for supporting the impeller to be tested, a pressure transmitter 5-4 for collecting air pressure signals, an air duct 5-3 for delivering compressed air, a third support frame 5-9 for providing support, and a compressed air supply unit 5 for providing the test air source. -8, the pneumatic probe 5-6 is fixed above the carrier 5-7 to accurately align with the impeller inner diameter. The carrier 5-7 is fixed above the third support frame 5-9. The limiting frame 5-5 is located next to the carrier 5-7 to prevent impeller displacement during testing. Both the third support frame 5-9 and the limiting frame 5-5 are located on the base 3 to ensure stable installation. The compressed air supply unit 5-8 is connected to the air passage 5-2 through the air duct 5-3 to achieve stable airflow delivery. The pressure transmitter 5-4 is connected to the air duct 5-3 near the pneumatic probe 5-8. Area 6 can quickly capture changes in gas back pressure, and the pressure transmitter 5-4 is electrically connected to the control center to achieve real-time transmission of pressure signals; multi-point detection can be completed without repeatedly adjusting the impeller placement position, greatly shortening the detection cycle. After the gas back pressure signal collected by the pressure transmitter 5-4 is transmitted to the control center, the impeller inner diameter is accurately calculated by a preset algorithm. The calculated inner diameter data is displayed on the display panel 12, realizing real-time conversion and visualization of back pressure signal to size data, which makes it easy for operators to intuitively monitor the detection results.

[0041] Example 2:

[0042] Reference Figures 1-17An impeller inner diameter and outer circular runout detection device includes the inner diameter size detection component 5 as described in Embodiment 1, as well as a base 3 for supporting various functional components and a cover 1 integrating operation and display components. A support column 2 is fixed on the base 3 to stably support the cover 1, ensuring the overall structural rigidity of the device and preventing structural shaking from affecting accuracy during detection. The base 3 is equipped with a feeding belt 4 for automatically conveying the impeller to be tested, a discharge belt 8 for transferring qualified products, a defective product belt 9 for sorting unqualified products, the inner diameter size detection component 5, the circular runout detection component 7, and several material sensors 11 for real-time monitoring of the impeller position. A display panel 12 for visually displaying detection data is provided on the side of the cover 1, and a mechanical claw 6 for gripping and transferring the impeller is provided at the bottom of the cover 1. The device adopts an integrated layout to integrate the inner diameter and circular runout detection functions, reducing the space occupation and workpiece transfer links of traditional dispersed equipment. The mechanical claw 6, in conjunction with multiple conveyor belts, realizes automated impeller rotation, and the material sensors 11 provide real-time feedback on the workpiece position, ensuring the orderly connection of the detection process.

[0043] The circular runout detection component 7 includes a displacement detection unit for accurately detecting the impeller's circular runout and a rotating fixing unit for driving the impeller to rotate and achieve fixation. The rotating fixing unit and the displacement detection unit work together to achieve efficient detection of the impeller's circular runout. The rotating fixing unit provides a stable rotation reference for the impeller, while the displacement detection unit focuses on radial displacement data acquisition. The two are linked through the control center to ensure that the detection head continuously and accurately acquires data during the impeller's rotation, significantly improving the reliability of the detection.

[0044] The displacement detection unit includes a second support frame 7-6 for providing fixed support, a second cylinder device 7-7 for providing driving power, an electronic displacement sensor 7-8 for collecting radial displacement changes of the impeller, and a second slider 7-15 for moving the electronic displacement sensor. The second support frame 7-6 is fixed on the base 3 to ensure stable and reliable support. The second cylinder device 7-7 is fixed on the second support frame 7-6, and its output end is connected to the second slider 7-15 to drive the slider to move smoothly. The bottom surface of the second slider 7-15 is integrally formed with a T-shaped strip 7-18 for guidance. The top surface of the second cylinder device 7-7 is provided with a T-shaped groove 7-17 that matches the T-shaped strip 7-18. The T-shaped strip 7-18 is embedded in the T-shaped groove 7-17 to limit the lateral displacement of the slider and ensure that it moves smoothly along the cylinder axis. The electronic displacement sensor 7-8 is fixed on the second slider 7-15 and moves precisely closer to and against the impeller with the slider.

[0045] The rotating fixing unit includes a fixing component for firmly fixing the impeller and a rotating component for driving the impeller to rotate smoothly. The fixing component focuses on increasing the clamping force to fix the impeller, while the rotating component drives the impeller to rotate, providing a "firm fixing + smooth rotation" basis for circular runout detection.

[0046] The fixing assembly includes a first support frame 7-2 for providing a fixed installation base, a first cylinder device 7-4 for providing clamping power, an expansion sleeve 7-5 for tightening the inner bore of the impeller, a push rod 7-10 for transmitting power, a connecting rod 7-11 for changing the direction of motion, and a first slider 7-12 for moving the expansion sleeve. The first support frame 7-2 is fixed to the base 3 to ensure structural stability. The first cylinder device 7-4 has a piston 7-16 that can slide along the cylinder body. The bottom end of the push rod 7-10 is fixed to the piston 7-16 and moves axially synchronously with the piston. The top rod 7-10 is hinged to the first slider 7-12 via the connecting rod 7-11 to achieve effective force transmission. The bottom of the first slider 7-12 is provided with a limiting strip 7-13. The top of the first cylinder device 7-4 is provided with a limiting groove 7-14. The limiting strip 7-13 is embedded in the limiting groove 7-14 and can slide along it to limit the slider offset and ensure accurate sliding trajectory. The expansion sleeve 7-5 is fixed to the top surface of the first slider 7-12 and can evenly expand the inner hole of the impeller. By adjusting the stroke of the piston 7-16, it can be adapted to impellers with different inner diameter specifications, effectively improving the versatility of the device.

[0047] The rotating assembly includes a rotary motor 7-3 for providing rotational power and a pneumatic rotary sleeve 7-1 for ensuring air circuit rotational connectivity. The rotary motor 7-3 is fixed on the first support frame 7-2 to ensure stable installation, and its output end is connected to the shaft at the bottom of the first cylinder device 7-4 via a coupling. The bottom side of the pneumatic rotary sleeve 7-1 has an integrally formed fixing seat 7-24 for easy installation and fixing, and is equipped with bolts 7-26 that match the fixing seat 7-24. The fixing seat 7-24 can be detachably fixed on the first support frame 7-2 via bolts 7-26, which facilitates installation and disassembly.

[0048] The pneumatic rotary sleeve 7-1 is provided with a first sleeve air hole 7-21 and a second sleeve air hole 7-22 for conveying gas. The first cylinder device 7-4 is provided with a corresponding first cylinder air hole 7-19 and a second cylinder air hole 7-20 for air intake. The first sleeve air hole 7-21 communicates with the first cylinder air hole 7-19, and the second sleeve air hole 7-22 communicates with the second cylinder air hole 7-20, ensuring that the air passage remains unobstructed when the first cylinder device 7-4 rotates. The outer circumference of the first cylinder device 7-4 is provided with three outwardly protruding annular protrusions 7-25 spaced apart. Two adjacent annular protrusions 7-25 and the end face of the pneumatic rotating sleeve 7-1 together form two sealed cavities to prevent gas leakage. Each annular protrusion 7-25 has two grooves, and wear-resistant sealing rings 7-23 are fitted into the grooves to enhance the sealing effect and maintain stable air pressure. The bottom end of the pneumatic rotating sleeve 7-1 extends inward with a stop 7-27 to support the weight of the first cylinder device 7-4. A bearing 7-9 is fitted between the stop 7-27 and the bottommost annular protrusion 7-25 to reduce rotational friction and reduce component wear.

[0049] The feeding belt 4, the discharge belt 8, and the defective product belt 9 are each equipped with a conveyor belt motor 10 for driving the belt body. The conveyor belt motor 10 can independently adjust the speed of each belt body to achieve precise matching with the detection rhythm and avoid material accumulation or conveying lag. Material sensors 11 are respectively set on both sides of the feeding belt 4, the discharge belt 8, and the defective product belt 9, as well as on both sides of the detection station of the inner diameter detection component 5 and the circular runout detection component 7, comprehensively covering the key nodes of material flow. All material sensors 11 are connected to the control center signal, which can detect whether the impeller is in position in real time and feed the signal back to the control center. The control center coordinates the actions of the mechanical claw 6 and each component accordingly to increase the automation level of the device.

[0050] Working principle: After the device is started, the conveyor belt motor 10 drives the feeding belt 4 to run, and the impeller to be tested is conveyed to the detection area along with the feeding belt 4. When the material sensors 11 on both sides of the feeding belt 4 detect that the impeller has reached the designated position, the material sensors 11 transmit the signal to the control center, and the control center issues a command to control the mechanical gripper 6 to move. After the mechanical gripper 6 picks up the impeller on the feeding belt 4, it moves it to the carrier 5-7 of the inner diameter size detection component 5 according to the preset path. At this time, the material sensors 11 on both sides of the inner diameter detection component 5 detect that the impeller has been placed in place and send a signal to the control center 12 again to trigger the inner diameter detection process. The compressed air supply unit 5-8 starts, and compressed air is delivered to the pneumatic probe 5-6 through the air passage duct 5-3. The three independent air passages 5-2 inside the pneumatic probe 5-6 are opened and released in a preset order, respectively delivering the gas to the upper, middle and lower nozzles 5-1 arranged axially at intervals on the outer wall. The nozzles 5-1 spray gas sequentially at the three detection points of the impeller inner diameter on the carrier 5-7. When the gas flows through the gap between the impeller inner diameter and the pneumatic probe 5-6, a pressure change is generated. The pressure transmitter 5-4 connected to the area of ​​the air passage duct 5-3 near the pneumatic probe 5-6 detects the pressure change in real time and converts the pressure signal into an electrical signal, which is transmitted to the control center. Through amplification, conversion and other processing, the electrical signal is converted into a size signal directly corresponding to the impeller inner diameter, and the detected inner diameter size data is transmitted to the display panel 12 for visualization.

[0051] Subsequently, impeller runout is detected. The mechanical gripper 6 picks up the impeller from the carrier 5-7 and moves it above the expansion sleeve 7-5 of the runout detection assembly 7. After the material sensors 11 on both sides of the runout detection assembly 7 detect that the impeller has reached its position, they send a signal to the control center. The control center 12 then instructs the first cylinder assembly 7-4 to start working. The piston 7-16 inside the first cylinder assembly 7-4 slides along the cylinder body. The push rod 7-10, which is fixed to the piston 7-16, moves upward with the piston 7-16. The upper end of the push rod 7-10 pushes the first slider 7-12 through the connecting rod 7-11, causing the limiting strip 7-13 on the first slider 7-12 to slide along the limiting groove 7-14 opened at the top of the first cylinder assembly 7-4, ultimately causing the expansion sleeve 7-5 to tighten and fix the impeller's inner hole. Then, the rotary motor 7-3 starts, and its output end drives the shaft at the bottom of the first cylinder assembly 7-4 to rotate through the coupling, ultimately driving the first cylinder assembly 7-4 to rotate. The first air hole 7-21 of the sleeve is connected to the first air hole 7-19 of the cylinder, and the second air hole 7-22 of the sleeve is connected to the second air hole 7-20 of the cylinder, ensuring that the air passage is unobstructed when the first cylinder device 7-4 rotates. The three annular protrusions 7-25 on the outer periphery of the first cylinder device 7-4 and the pneumatic rotating sleeve 7-1 form two sealed cavities. The wear-resistant sealing rings 7-23 in the grooves of the annular protrusions 7-25 ensure the sealing performance and ensure the stable operation of the device. At the same time, the second cylinder device 7-7 drives the second slider 7-15 to move. The T-shaped strip 7-18 at the bottom of the second slider 7-15 slides along the T-shaped groove 7-17 on the second cylinder device 7-7, which drives the electronic displacement sensor 7-8 fixed on the second slider 7-15 to approach the impeller. The detection end of the electronic displacement sensor 7-8 contacts and abuts against the outer surface of the impeller. As the impeller rotates with the first cylinder device 7-4, the electronic displacement sensor 7-8 collects the radial displacement changes of the outer circular surface of the impeller in real time. This displacement signal is converted into an electrical signal by the electronic displacement sensor 7-8 and transmitted to the control center. After signal amplification and data conversion, the control center converts the electrical signal into circular runout data and transmits it to the display panel 12 for visual display.

[0052] After the inspection process is completed, the first cylinder device 7-4 drives the piston 7-16 to slide downwards, the push rod 7-10 moves down synchronously and drives the first slider 7-12 to reset through the connecting rod 7-11, the expansion sleeve 7-5 tightens and loosens the impeller, and the control center then judges the test results of the impeller inner diameter and circular runout. If both are qualified, the mechanical claw 6 is controlled to pick up the impeller on the expansion sleeve 7-5 and move it to the discharge belt 8. The discharge belt 8 driven by the conveyor belt motor 10 transports the qualified impeller to the collection area; if either is unqualified, the mechanical claw 6 is controlled to move the impeller to the defective product belt 9, and the defective product belt 9 transports it to the unqualified product collection area.

[0053] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An impeller inner diameter detection head, comprising a pneumatic probe (5-6), characterized in that: The outer wall of the pneumatic probe (5-6) is provided with three nozzles (5-1) spaced apart along the axial direction. The nozzles (5-1) correspond to the three detection points of the inner diameter of the impeller, respectively. The pneumatic probe (5-6) is provided with three independent air passages (5-2) inside. The air passages (5-2) correspond one-to-one with the nozzles (5-1) and are independently connected. The air passages (5-2) are used to connect to the air source to deliver airflow to the nozzles (5-1).

2. A device for detecting the runout of an impeller's inner diameter and outer circle, comprising the impeller inner diameter detection head as described in claim 1, characterized in that: It also includes a base (3) and a cover (1). The base (3) is fixed with a support column (2) for supporting the cover (1). The base (3) is provided with a feeding belt (4), a discharge belt (8), a defective product belt (9), an inner diameter detection component (5), a circular runout detection component (7), and several material sensors (11). The side and bottom of the cover are respectively provided with a display panel (12) and a mechanical claw (6).

3. The impeller inner diameter and outer circle runout detection device according to claim 2, characterized in that: The inner diameter detection component (5) includes a limiting frame (5-5), a carrying frame (5-7), a pressure transmitter (5-4), a third support frame (5-9), an air duct (5-3), and a compressed air supply unit (5-8). The pneumatic probe (5-6) is fixed above the carrying frame (5-7), the carrying frame (5-7) is fixed above the third support frame (5-9), the limiting frame (5-5) is located on the outer periphery of the carrying frame (5-7), and the third support frame (5-9) and the limiting frame (5-5) are both located on the base (3). The compressed air supply unit (5-8) is connected to the air passage (5-2) through the air duct (5-3). The three pressure transmitters (5-4) are respectively located in the areas of the three air ducts (5-3) near the pneumatic probe (5-6), and the pressure transmitters (5-4) are electrically connected to the control center.

4. The impeller inner diameter and outer circle runout detection device according to claim 2, characterized in that: The circular runout detection component (7) includes a displacement detection unit for detecting the impeller circular runout and a rotation and fixing unit for rotating and fixing the impeller. The rotation and fixing unit and the displacement detection unit work together to detect the impeller circular runout.

5. The impeller inner diameter and outer circle runout detection device according to claim 4, characterized in that: The displacement detection unit includes a second support frame (7-6), a second cylinder device (7-7), an electronic displacement sensor (7-8), and a second slider (7-15). The second support frame (7-6) is fixed on the base (3), the second cylinder device (7-7) is fixed on the second support frame (7-6), and its output end is connected to the second slider (7-15). The bottom surface of the second slider (7-15) is integrally formed with a T-shaped strip (7-18), and the top surface of the second cylinder device (7-7) is provided with a T-shaped groove (7-17) that is adapted to the T-shaped strip (7-18). The T-shaped strip (7-18) is embedded in the T-shaped groove (7-17). The electronic displacement sensor (7-8) is fixed on the second slider (7-15).

6. The impeller inner diameter and outer diameter runout detection device according to claim 4, characterized in that: The rotating fixing unit includes a fixing component for fixing the impeller and a rotating component for rotating the impeller.

7. The impeller inner diameter and outer diameter runout detection device according to claim 6, characterized in that: The fixing assembly includes a first support frame (7-2), a first cylinder device (7-4), an expansion sleeve (7-5), a push rod (7-10), a connecting rod (7-11), and a first slider (7-12); the first support frame (7-2) is fixed on the base (3), and the first cylinder device (7-4) is connected to the rotating unit; the first cylinder device (7-4) is provided with a slidable piston (7-16) inside, and the bottom end of the push rod (7-10) is fixed to the piston. On the plug (7-16), the top rod (7-10) is hinged to the first slider (7-12) via a connecting rod (7-11). The bottom of the first slider (7-12) is provided with a limiting strip (7-13). The top of the first cylinder device (7-4) is provided with a limiting groove (7-14). The limiting strip (7-13) is embedded in the limiting groove (7-14) and can slide along it. The expansion sleeve (7-5) is fixed to the top surface of the first slider (7-12).

8. The impeller inner diameter and outer circle runout detection device according to claim 6, characterized in that: The rotating assembly includes a rotary motor (7-3) and a pneumatic rotary sleeve (7-1); the rotary motor (7-3) is fixed on the first support frame (7-2), and its output end is connected to the shaft at the bottom of the first cylinder device (7-4) via a coupling; the bottom side of the pneumatic rotary sleeve (7-1) is integrally formed with a fixing seat (7-24), and is equipped with bolts (7-26) that match the fixing seat (7-24); the fixing seat (7-24) is detachably fixed on the first support frame (7-2) by bolts (7-26), and the first cylinder device (7-4) and the pneumatic rotary sleeve (7-1) remain coaxial.

9. The impeller inner diameter and outer diameter runout detection device according to claim 8, characterized in that: The pneumatic rotary sleeve (7-1) is provided with a first sleeve air hole (7-21) and a second sleeve air hole (7-22). The first cylinder device (7-4) is provided with a first cylinder air hole (7-19) and a second cylinder air hole (7-20). The first sleeve air hole (7-21) communicates with the first cylinder air hole (7-19), and the second sleeve air hole (7-22) communicates with the second cylinder air hole (7-20). The first cylinder device (7-4) has three outwardly extending parts spaced circumferentially around its outer periphery. An annular protrusion (7-25) is formed by two adjacent annular protrusions (7-25) and the end face of the pneumatic rotating sleeve (7-1). Two grooves are provided on each annular protrusion (7-25), and a wear-resistant sealing ring (7-23) is fitted in the groove. A stop (7-27) extends inward from the bottom end of the pneumatic rotating sleeve (7-1), and a bearing (7-9) is assembled between the stop (7-27) and the bottommost annular protrusion (7-25).

10. The impeller inner diameter and outer diameter runout detection device according to claim 2, characterized in that: The feeding belt (4), the discharge belt (8) and the defective product belt (9) are each equipped with a conveyor belt motor (10). Several material sensors (11) are respectively located on both sides of the feeding belt (4), the discharge belt (8) and the defective product belt (9), as well as on both sides of the detection station of the inner diameter detection component (5) and the circular runout detection component (7). All material sensors (11) are connected to the control center signal.

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