An orifice plate liquid flow resistance automatic detection device

Abstract

The application discloses a kind of orifice plate liquid flow resistance automatic detection equipment, including tray fixed table, flow resistance testing machine, pick-up manipulator, tool changing device, tray body is equipped with the tray of placing orifice plate on tray fixed table, and tool changing device includes tool storage and multi-axis gripper mechanism, further including translation module and electrical control box, the power output end of translation module is connected with tool fixed table, and detection tool is equipped with stepped hole, and flow resistance testing machine includes lifting clamping module, upper lifting platform and lower lifting platform, and upper lifting platform is equipped with lower pressing tool, and lower lifting platform is equipped with upper pressing tool, and upper pressing tool is connected with water inlet pipe, and water inlet pipe is equipped with water inflow meter, and lower pressing tool is connected with water outlet pipe, and water outlet pipe is equipped with water outflow meter.The application has the effects of being able to simulate the actual real working condition environment of orifice plate to carry out liquid flow circulation dynamic detection, more accurate and reliable detection results, realizing automatic orifice plate replacement and detection, and improving detection efficiency.

Description

Technical Field

[0001] This invention relates to the field of aircraft component technology, and in particular to an automated testing device for the flow resistance of orifice plate fluid. Background Technology

[0002] like Figure 1 As shown, an orifice plate 7 component for an aircraft engine is described in the prior art. The orifice plate 7 has a circular inner hole 71 in the middle for liquid to flow through. Since the orifice plate 71 is used in an aircraft engine, the liquid flow rate through the orifice plate 71 has extremely high precision requirements. In factories, calipers are usually used to measure various parameters of the orifice plate 71, which cannot simulate the actual working environment. As a result, the liquid flow rate of the assembled orifice plate 71 may still be substandard, which urgently needs to be improved. Summary of the Invention

[0003] The purpose of this invention is to provide an automated orifice plate fluid flow resistance testing device, which can simulate the actual working conditions of the orifice plate to perform dynamic fluid flow detection, provide more accurate and reliable test results, realize automated orifice plate replacement and testing, and improve testing efficiency.

[0004] The above-mentioned technical objective of the present invention is achieved through the following technical solution: an automated testing equipment for flow resistance of orifice plate liquid, comprising a tray fixing platform, a flow resistance testing machine, a part picking robot, and a tooling changing device, wherein the tray fixing platform is provided with a tray body for placing orifice plates; The tooling changer includes a tooling storage compartment and a multi-axis gripper mechanism. The tooling storage compartment stores several matching testing toolings for different specifications of orifice plates. The testing tooling has a water passage hole corresponding to the orifice plate, and the diameter of the water passage hole is greater than or equal to the inner diameter of the orifice plate. It also includes a translation module and an electrical control box. The electrical control box is electrically connected to the part-picking robot, the tooling changing device, and the translation module. The power output end of the translation module is connected to a tooling fixing platform. The translation module is used to drive the tooling fixing platform to move between the tooling storage room and the flow resistance tester. The tooling fixing platform has mounting holes for the corresponding test tooling. The multi-axis gripper mechanism is used to grab the test tooling and move it to the corresponding mounting hole. The test tooling has a stepped hole at the upper opening of the water passage hole. The part-picking robot is used to grab the orifice plate, move it, and position it in the corresponding stepped hole. The flow resistance testing machine includes a lifting clamping module, an upper lifting platform, and a lower lifting platform. The upper lifting platform is equipped with a pressing fixture, and the lower lifting platform is equipped with an upper lifting fixture. The lifting clamping module is used to drive the upper and lower lifting platforms to move closer or further apart, so that the pressing fixture and the upper lifting fixture switch between a clamping state and a separating state relative to the testing fixture. The upper lifting fixture is connected to a water inlet pipe, which is equipped with a water inlet flow meter. The pressing fixture is connected to a water outlet pipe, which is equipped with a water outlet flow meter. When the testing fixture is clamped between the pressing fixture and the upper lifting fixture, the water inlet pipe passes through the water passage hole of the testing fixture and the inner hole of the orifice plate in sequence and then connects to the water outlet pipe.

[0005] By adopting the above technical solution, when it is necessary to inspect a perforated plate of a predetermined specification, the translation module first moves the fixture fixing table to align with the fixture storage area. Then, the multi-axis gripper mechanism clamps the inspection fixture of the predetermined specification and installs it into the corresponding mounting hole on the fixture fixing table. At this time, the lifting and clamping module drives the lower pressing fixture and the upper lifting fixture to maintain a separated state through the upper and lower lifting platforms. Afterward, the translation module moves the fixture fixing table with the inspection fixture installed between the lower pressing fixture and the upper lifting fixture. Then, the picking robot grabs the perforated plate of the predetermined specification from the tray and places it into the stepped hole on the inspection fixture. Afterward, the lifting and clamping module drives the lower pressing fixture and the upper lifting fixture to clamp on the upper and lower sides of the inspection fixture through the upper and lower lifting platforms. This allows the water inlet pipe of the upper lifting fixture to pass through the water passage hole of the inspection fixture and the inner hole of the perforated plate in sequence and then connect with the water outlet pipe of the lower pressing fixture. Then, a predetermined flow is introduced into the water inlet pipe. The device measures the pressure of the liquid. Once the liquid flow rate stabilizes, the difference in flow velocity measured by the inlet and outlet flow meters is calculated and compared with parameters in a standard library to determine whether the orifice plate is qualified. The diameter of the water passage hole in the testing fixture is greater than or equal to the inner diameter of the orifice plate, which avoids the testing fixture from creating resistance to the liquid flowing through the orifice plate and affecting the test results. Furthermore, the flow rate, velocity, and pressure of the liquid entering the inlet pipe can be precisely controlled by existing pumping devices. This allows the device to simulate the actual working conditions of the orifice plate for dynamic liquid flow detection, restoring the fluid pressure, velocity, and flow state during actual operation. The test data closely approximates the actual performance, and the test results are accurate and reliable. This effectively avoids the problems of distortion and large deviation from actual working conditions in offline static test data. At the same time, it realizes automated orifice plate replacement and testing, with high testing efficiency and good consistency.

[0006] A further configuration of the present invention is as follows: the lower pressing fixture includes an upper fixing component and a pressing sleeve component, the upper fixing component is used to fix the pressing sleeve component to the upper lifting platform, the pressing sleeve component is connected to the water inlet end of the water outlet pipe, and the upper top fixture includes a lower fixing component and a top sleeve component, the lower fixing component is used to fix the top sleeve component to the lower lifting platform, and the top sleeve component is connected to the water outlet end of the water inlet pipe.

[0007] By adopting the above technical solutions, the lower pressing tool of this device adopts a separate and independent design of the upper fixing component and the pressure sleeve component, and the upper top tool adopts a separate and independent design of the lower fixing component and the top sleeve component. The separate lower pressing tool and upper top tool structure realizes the separation of the fixed support function and the fluid conduction function, which makes disassembly and replacement convenient, the flow channel is smooth with little turbulence, and the sealing and pressure bearing are reliable, effectively improving the accuracy of flow resistance detection under the actual working conditions of the orifice plate.

[0008] A further feature of the present invention is that the pressure sleeve assembly includes a first set of pipe fittings and a lower pressure sleeve coaxially connected, the end of the first set of pipe fittings away from the lower pressure sleeve is connected to the inlet end of the outlet pipe, and a first sealing ring is provided between the first set of pipe fittings and the lower pressure sleeve.

[0009] By adopting the above technical solution, the first set of pipe fittings and the lower pressure sleeve are coaxially connected, ensuring that the water flow channel is regular and free from deviation and turbulent dead angles, and the water flow is smooth. This reduces the interference of local water pressure loss and water flow disturbance on the flow monitoring and flow resistance test results. The first sealing ring is installed between the first set of pipe fittings and the lower pressure sleeve to seal the gap at the connection, preventing water from leaking from the assembly gap. This ensures that all water flows through the water hole and the inner hole of the orifice plate, greatly improving the accuracy of the flow resistance test data.

[0010] A further provision of the present invention is that the top sleeve assembly includes a second set of pipe fittings and an upper top sleeve coaxially connected, the end of the second set of pipe fittings away from the upper top sleeve is connected to the outlet end of the water inlet pipe, and a second sealing ring is provided between the second set of pipe fittings and the upper top sleeve.

[0011] By adopting the above technical solution, a second sealing ring is set between the second set of pipe fittings and the upper top sleeve to seal the connection gap, prevent high-pressure water from leaking out of the inlet end, ensure that all water flows through the water passage hole and the inner hole of the orifice plate of the testing fixture, eliminate the testing error caused by water leakage, and ensure the accuracy of flow resistance and flow rate testing data.

[0012] A further feature of the present invention is that a positioning cylinder is provided on the tooling fixing platform, and a positioning plate is provided at the output end of the positioning cylinder, and the positioning cylinder drives the positioning plate to position and cooperate with the detection tooling.

[0013] By adopting the above technical solution, the positioning plate driven by the positioning cylinder is used to laterally tighten and limit the detection fixture in the mounting hole, so as to avoid the detection fixture from shifting or tilting during translation, clamping and docking, thus ensuring the installation position accuracy of the detection fixture and ensuring the subsequent placement of the hole plate and the alignment and fit of the upper and lower fixtures.

[0014] A further feature of the present invention is that the detection fixture is provided with an upper leak-proof sealing ring, and the upper top fixture is provided with a lower leak-proof sealing ring. When the orifice plate is clamped and positioned between the lower pressure fixture and the upper top fixture, the upper end face of the detection fixture and the lower pressure fixture are sealed together by the upper leak-proof sealing ring, and the lower end face of the detection fixture and the upper top fixture are sealed together by the lower leak-proof sealing ring.

[0015] By adopting the above technical solution, upper and lower anti-leakage sealing rings are respectively set on the upper and lower end faces of the testing fixture to seal the joint surfaces of the fixture with the lower pressing fixture and the upper lifting fixture, thereby blocking the problem of water seepage and overflow in the joint gaps. This ensures that the water flow can only pass through the inlet pipe and the inner hole of the orifice plate in sequence and then flow out of the outlet pipe in a one-way manner, eliminating the detection error caused by leakage and ensuring the accuracy and stability of the orifice plate liquid flow resistance test results.

[0016] A further configuration of the present invention is as follows: the picking robot includes a multi-axis robotic arm and a quick-change gripper assembly; a gripper storage rack is provided on the tray fixing platform; the gripper storage rack stores several quick-change gripper assemblies of different specifications; the execution end of the multi-axis robotic arm is provided with a quick-change head; and the picking robot is quickly connected to the quick-change gripper assembly of the corresponding specification through the quick-change head.

[0017] By adopting the above technical solutions and equipping multiple quick-change gripper assemblies of different specifications, the clamping tools can be quickly switched to accommodate perforated plates of different sizes and shapes, meeting the automated loading and unloading needs of various types of perforated plates, and making the equipment more adaptable.

[0018] A further feature of the present invention is that: the tray body is provided with a plurality of support members for placing perforated plates, the tray body is marked with a code corresponding to the perforated plate specification, and the tray fixing platform is provided with a barcode scanner electrically connected to the electrical control box. The barcode scanner is used to identify the code on the tray body and drive the quick-change head of the multi-axis robotic arm to connect to the quick-change gripper assembly of the corresponding specification according to the perforated plate of different specifications, and at the same time drive the multi-axis gripper mechanism to clamp the detection fixture of the corresponding specification to the fixture fixing platform.

[0019] By adopting the above technical solution, this device uses a barcode scanner to read the code on the tray body and automatically identify the model and specifications of the perforated plate. There is no need for manual input or manual selection, which reduces human error. After the barcode scanner identifies the code, the electrical control box automatically interlocks and controls the device, and automatically replaces the corresponding quick-change gripper assembly. At the same time, it automatically grabs the corresponding specification of inspection tooling, realizing the synchronous linkage between the part picking robot and the tooling changing device, and is compatible with fully automated inspection production lines.

[0020] A further provision of the present invention is that the tooling storage bin includes a storage turntable and a rotary drive mechanism for driving the storage turntable to rotate. The rotary drive mechanism is electrically connected to the electrical control box, and the rotary drive mechanism cooperates with the multi-axis gripper mechanism.

[0021] By adopting the above technical solution, this device adopts a rotary storage layout, with various specifications of testing fixtures arranged in a ring. Compared with linear storage, the space utilization rate is higher and the overall equipment structure is more compact. During operation, the rotary drive mechanism drives the storage turntable to rotate precisely, quickly transferring the target specification fixtures to the gripping station. The positioning speed is fast, shortening the waiting time for switching between multiple specification fixtures.

[0022] A further feature of the present invention is that: a water baffle is provided around the top tooling, and a water receiving trough is provided below the water baffle.

[0023] By adopting the above technical solution, after the orifice plate test is completed, the orifice plate needs to be unloaded. At this time, the lifting clamping module is used to switch the lower pressing fixture and the upper lifting fixture to the separation state, which can complete the release of the orifice plate. However, during the separation process, residual water droplets will fall on the water inlet pipe, water outlet pipe and testing fixture. At this time, the baffle plate can splash this part of the water everywhere. Together with the water receiving tank below, the wastewater blocked by the baffle plate is collected in a unified manner to prevent water accumulation in the flow resistance testing machine area and keep the equipment table dry and clean.

[0024] In summary, the present invention has the following beneficial effects: 1. This automated flow resistance testing equipment for orifice plates mainly consists of a tray fixing platform, a flow resistance testing machine, a part-picking robot, a tooling changing device, a translation module, and an electrical control box. It can realize the automated testing of flow resistance of orifice plates. The tooling changing device can automatically grab the appropriate testing tooling according to different specifications of orifice plates and install it onto the tooling fixing platform. The part-picking robot can accurately place the orifice plate in the tray onto the testing tooling. The translation module drives the tooling fixing platform to move between the tooling storage area and the flow resistance testing machine. The flow resistance testing machine clamps the testing tooling through the lifting clamping module, realizing the connection between the water inlet pipe, the testing tooling, the orifice plate, and the water outlet pipe.

[0025] 2. This equipment offers accurate and reliable testing. The diameter of the water passage in the testing fixture is greater than or equal to the inner diameter of the orifice plate, avoiding resistance to the fluid flow from the fixture itself and preventing any impact on the test results. Simultaneously, the pumping device precisely controls the flow rate and pressure of the liquid, simulating the actual working conditions of the orifice plate and reproducing the true fluid state. This solves the problems of data distortion and large deviations from actual working conditions in offline static testing. Furthermore, the equipment automates the entire process of orifice plate replacement and testing, requiring minimal manual intervention. This not only improves testing efficiency but also ensures the consistency of test results, making it suitable for batch testing of orifice plates of different specifications. Attached Figure Description

[0026] Figure 1 This is a perforated plate for an aircraft engine in the prior art.

[0027] Figure 2This is a longitudinal sectional view of the support member of the present invention, in which the perforated plate is embedded in the hole of the tray body.

[0028] Figure 3 This is the present invention. Figure 2 A magnified view of a portion of region A in the middle.

[0029] Figure 4 This is an overall structural diagram of the present invention.

[0030] Figure 5 This is a structural diagram of the robotic arm and pallet fixing platform of the present invention.

[0031] Figure 6 This is a structural diagram of the flow resistance testing machine, tooling changing device, and translation module of the present invention.

[0032] Figure 7 This is a structural diagram of the flow resistance testing machine and translation module of the present invention.

[0033] Figure 8 This is the present invention. Figure 7 A longitudinal sectional view, the water tank is not shown.

[0034] Figure 9 This is the present invention. Figure 8 A magnified view of a portion of region B in the middle.

[0035] Figure 10 This is the present invention. Figure 9 A magnified view of a portion of region C.

[0036] In the diagram: 1. Pallet fixing platform; 11. Pallet body; 111. Embedded hole; 12. Gripper storage rack; 13. Support component; 131. Positioning hole; 14. Barcode scanner; 15. First push cylinder; 16. Second push cylinder; 17. Positioning block; 18. Hot air drying device; 181. Hot air blower; 182. Hot air duct; 2. Flow resistance tester; 201. Flow resistance tester one; 202. Flow resistance tester two; 2 03. Flow resistance testing machine three; 21. Lifting clamping module; 22. Upper lifting platform; 221. Lower pressing fixture; 2211. Upper fixing assembly; 2212. Pressing sleeve assembly; 22121. First set of pipe fittings; 22122. Lower pressing sleeve; 22123. First sealing ring; 222. Water outlet pipe; 2221. Water outlet flow meter; 23. Lower lifting platform; 231. Upper top fixture; 2311. Lower fixing assembly; 2 312. Top sleeve assembly; 23121. Second set of pipe fittings; 23122. Upper top sleeve; 23123. Second sealing ring; 23124. Lower leak-proof sealing ring; 232. Water inlet pipe; 2321. Water inlet flow meter; 24. Water baffle; 25. Water receiving trough; 3. Parts picking robot; 31. Multi-axis robotic arm; 311. Quick-change head; 32. Quick-change gripper assembly; 33. Vision inspection module; 4. Tooling replacement 41. Tooling storage unit; 411. Material turntable; 412. Rotary drive mechanism; 42. Multi-axis gripper mechanism; 43. Inspection tooling; 431. Water passage hole; 432. Step hole; 433. Upper anti-leakage sealing ring; 5. Translation module; 51. Tooling fixing table; 511. Mounting hole; 512. Positioning cylinder; 5121. Positioning plate; 6. Electrical control box; 7. Hole plate; 71. Inner hole. Detailed Implementation

[0037] The invention will now be further described with reference to the accompanying drawings.

[0038] An automated flow resistance detection device for orifice plate 7, such as Figures 4-8As shown, the system includes a pallet fixing platform 1, a flow resistance testing machine 2, a part picking robot 3, and a tooling changing device 4. The pallet fixing platform 1 is equipped with a pallet body 11 for placing perforated plates 7. The tooling changing device 4 includes a tooling storage chamber 41 and a multi-axis gripper mechanism 42. The tooling storage chamber 41 stores several matching testing toolings 43 corresponding to perforated plates 7 of different specifications. The testing tooling 43 has a water passage hole 431 corresponding to the perforated plate 7, and the diameter of the water passage hole 431 is greater than or equal to the diameter of the inner hole 71 of the perforated plate 7. The system also includes a translation module 5 and an electrical control system. Box 6, the electrical control box 6 is electrically connected to the part-picking robot 3, the tooling changing device 4, and the translation module 5. The power output end of the translation module 5 is connected to the tooling fixing table 51. The translation module 5 is used to drive the tooling fixing table 51 to move between the tooling storage 41 and the flow resistance testing machine 2. The tooling fixing table 51 has mounting holes 511 corresponding to the testing tool 43. The multi-axis gripper mechanism 42 is used to grab the testing tool 43 and move it into the corresponding mounting hole 511. In this embodiment, the tooling fixing table 51 has two mounting positions, each mounting position Each is equipped with a testing fixture 43. The testing fixture 43 has a stepped hole 432 connected to the upper opening of the water passage hole 431. The picking robot 3 is used to grip the perforated plate 7, move it, and position it in the corresponding stepped hole 432. The flow resistance testing machine 2 includes a lifting clamping module 21, an upper lifting platform 22, and a lower lifting platform 23. The upper lifting platform 22 is equipped with a pressing fixture 221, and the lower lifting platform 23 is equipped with an upper lifting fixture 231. The lifting clamping module 21 is used to drive the upper lifting platform 22 and the lower lifting platform 23 to move closer or further apart, so that the pressing fixture 221 moves closer or further away from the lower lifting platform 23. The upper tooling 231 and the upper tooling 231 are respectively connected to the detection tooling 43 in a clamping state or a separation state. The upper tooling 231 is connected to a water inlet pipe 232, which is equipped with a water inlet flow meter 2321. The lower tooling 221 is connected to a water outlet pipe 222, which is equipped with a water outlet flow meter 2221. When the detection tooling 43 is clamped between the lower tooling 221 and the upper tooling 231, the water inlet pipe 232 passes through the water passage hole 431 of the detection tooling 43 and the inner hole 71 of the orifice plate 7 in sequence and then connects to the water outlet pipe 222.

[0039] like Figures 8-10As shown, the lower pressing fixture 221 includes an upper fixing component 2211 and a pressing sleeve component 2212. The upper fixing component 2211 is used to fix the pressing sleeve component 2212 to the upper lifting platform 22. The pressing sleeve component 2212 is connected to the inlet end of the water outlet pipe 222. The upper top fixture 231 includes a lower fixing component 2311 and a top sleeve component 2312. The lower fixing component 2311 is used to fix the top sleeve component 2312 to the lower lifting platform 23. The top sleeve component 2312 is connected to the upper lifting platform 23. The outlet end of the inlet pipe 232 is connected. The lower pressure fixture 221 of this device adopts a separate and independent design of the upper fixing component 2211 and the pressure sleeve component 2212. The upper top fixture 231 adopts a separate and independent design of the lower fixing component 2311 and the top sleeve component 2312. The separate structure of the lower pressure fixture 221 and the upper top fixture 231 realizes the separation of the fixed support function and the fluid conduction function, which is convenient for disassembly and replacement, smooth flow channel with low turbulence, reliable sealing and pressure bearing, and effectively To improve the accuracy of flow resistance detection under actual working conditions of the orifice plate 7; the pressure sleeve assembly 2212 includes a first set of pipe fittings 22121 and a lower pressure sleeve 22122 coaxially connected. The end of the first set of pipe fittings 22121 away from the lower pressure sleeve 22122 is connected to the inlet end of the outlet pipe 222, and a first sealing ring 22123 is provided between the first set of pipe fittings 22121 and the lower pressure sleeve 22122. The first set of pipe fittings 22121 and the lower pressure sleeve 22122 are coaxially connected. To ensure that the water flow channel is regular and free from deviation and turbulent dead angles, the water flow is smooth, reducing local water pressure loss and water flow disturbances from interfering with flow monitoring and flow resistance test results. The first sealing ring 22123 is installed between the first set of pipe fittings 22121 and the lower pressure sleeve 22122 to seal the gap at the connection, preventing water from leaking from the assembly gap. This ensures that all water flows through the water hole 431 and the inner hole 71 of the orifice plate 7, greatly improving the accuracy of flow resistance test data.

[0040] like Figures 9-10As shown, the top sleeve assembly 2312 includes a second set of pipe fittings 23121 and an upper top sleeve 23122 coaxially connected. The end of the second set of pipe fittings 23121 away from the upper top sleeve 23122 is connected to the outlet end of the water inlet pipe 232. A second sealing ring 23123 is provided between the second set of pipe fittings 23121 and the upper top sleeve 23122 to seal the connection gap, prevent high-pressure water from leaking out of the inlet end, and ensure that all water flows through the water passage hole 431 of the detection fixture 43 and the inner hole 71 of the orifice plate 7, eliminating... The detection error caused by water leakage ensures the accuracy of flow resistance and flow rate detection data; the tooling fixing table 51 is equipped with a positioning cylinder 512, and the output end of the positioning cylinder 512 is equipped with a positioning plate 5121. The positioning cylinder 512 drives the positioning plate 5121 to position and cooperate with the detection tooling 43. The positioning cylinder 512 drives the positioning plate 5121 to laterally tighten and limit the detection tooling 43 in the mounting hole 511, so as to avoid the detection tooling 43 from shifting or tilting during translation, clamping and docking, ensuring the installation position accuracy of the detection tooling 43, and ensuring the subsequent placement of the hole plate 7 and the alignment and fit of the upper and lower tooling.

[0041] like Figures 9-10 As shown, the testing fixture 43 is equipped with an upper leak-proof sealing ring 433, and the upper top fixture 231 is equipped with a lower leak-proof sealing ring 23124. When the orifice plate 7 is clamped and positioned between the lower pressure fixture 221 and the upper top fixture 231, the upper end face of the testing fixture 43 is sealed to the lower pressure fixture 221 by the upper leak-proof sealing ring 433, and the lower end face of the testing fixture 43 is sealed to the upper top fixture 231 by the lower leak-proof sealing ring 23124. The upper and lower leak-proof sealing rings 23124 are respectively provided on the upper and lower end faces of the testing fixture 43 to seal the joint surfaces of the fixture with the lower pressure fixture 221 and the upper top fixture 231, respectively, preventing water seepage and overflow from the joint gaps, and ensuring that the water flow can only pass through the inlet pipe 232 and the inner hole 71 of the orifice plate 7 in sequence and then out of the outlet pipe 22. 2. Unidirectional flow eliminates detection errors caused by leakage and ensures the accuracy and stability of the flow resistance test results of the orifice plate 7. The upper fixture 231 is equipped with baffles 24 around its perimeter, and a water receiving trough 25 is provided below the baffles 24. After the orifice plate 7 is tested, it needs to be unloaded. At this time, the lower fixture 221 and the upper fixture 231 are switched to the separation state by using the lifting clamping module 21, which can release the orifice plate 7. However, during the separation process, residual water droplets will fall on the inlet pipe 232, outlet pipe 222 and testing fixture 43. At this time, the baffles 24 can splash this part of the water everywhere. With the water receiving trough 25 below, the wastewater blocked by the baffles 24 is collected in a unified manner to prevent water accumulation in the flow resistance tester 2 area and keep the equipment table dry and clean.

[0042] like Figures 2-6As shown, the picking robot 3 includes a multi-axis robotic arm 31 and a quick-change gripper assembly 32. A gripper storage rack 12 is provided on the pallet fixing platform 1, storing several quick-change gripper assemblies 32 of different specifications. The execution end of the multi-axis robotic arm 31 is equipped with a quick-change head 311. The picking robot 3 is quickly connected to the corresponding quick-change gripper assembly 32 via the quick-change head 311. Equipped with multiple quick-change gripper assemblies 32 of different specifications, it can quickly switch gripping tools for perforated plates 7 of different sizes and shapes, meeting the automated loading and unloading needs of various models of perforated plates 7, thus expanding the equipment's adaptability. The pallet body 11... The tray body 11 is provided with several support members 13 for placing perforated plates 7. Several embedded holes 111 are arrayed in the tray body 11, and the support members 13 are embedded in the corresponding embedded holes 111. The upper end face of the support member 13 is provided with positioning holes 131, and the perforated plates 7 are positioned on the support members 13 through the positioning holes 131. The tray body 11 is marked with a code corresponding to the specification of the perforated plates 7. The tray fixing table 1 is provided with a barcode scanner 14 electrically connected to the electrical control box 6. The barcode scanner 14 is used to identify the code on the tray body 11 and drive the quick change head 311 of the multi-axis robotic arm 31 to connect to the corresponding specification quick changer according to the different specifications of the perforated plates 7. The gripper assembly 32 simultaneously drives the multi-axis gripper mechanism 42 to grip the corresponding specification inspection fixture 43 to the fixture fixing table 51. This device uses a barcode scanner 14 to read the code on the tray body 11 and automatically identify the model and specification of the perforated plate 7, eliminating the need for manual input and selection, thus reducing human error. After the barcode scanner 14 identifies the code, the electrical control box 6 automatically interlocks and controls the device, automatically replacing the corresponding quick-change gripper assembly 32 and simultaneously gripping the corresponding specification inspection fixture 43. This achieves synchronous linkage between the part-picking robot 3 and the fixture changing device 4, adapting to fully automated inspection production lines; the fixture storage warehouse 41... The device includes a storage turntable 411 and a rotary drive mechanism 412 for driving the storage turntable 411 to rotate. The rotary drive mechanism 412 is electrically connected to the electrical control box 6 and works in conjunction with the multi-axis gripper mechanism 42. This device adopts a turntable storage layout with various specifications of testing fixtures 43 arranged in a ring. Compared with linear storage, the space utilization rate is higher and the overall equipment structure is more compact. During operation, the rotary drive mechanism 412 drives the storage turntable 411 to rotate precisely and quickly transfer the target specification fixture to the gripping station. The positioning speed is fast and the waiting time for switching between multiple specification fixtures is shortened.

[0043] like Figures 4-5As shown, the flow resistance testing machine 2 in this embodiment includes flow resistance testing machine 2-1, flow resistance testing machine 2-2, and flow resistance testing machine 2-3. The tray fixing platform 1, flow resistance testing machine 2-1, flow resistance testing machine 2-2, and flow resistance testing machine 2-3 are arranged sequentially around the part-retrieving robot arm 3. The lifting and clamping module 21 in this embodiment is a feature found in some prior art. In some embodiments, the upper lifting platform 22 is connected to a positive threaded sleeve, and the lower lifting platform 23 is connected to a negative threaded sleeve. The positive and negative threaded sleeves are connected to both ends of a lead screw, and rotation of the lead screw allows for... This causes the positive and negative threaded sleeves to move closer or further apart, thereby causing the upper lifting platform 22 and the lower lifting platform 23 to move closer or further apart. Additionally, this embodiment includes a CNC screen and an alarm. The CNC screen is electrically connected to the inlet flow meter 2321 and the outlet flow meter 2221. The CNC screen is used to calculate the flow velocity difference between the inlet flow meter 2321 and the outlet flow meter 2221, thereby determining whether the error between the inner hole 71 of the orifice plate 7 and the standard part is within a reasonable range. If it exceeds the preset error, it will trigger an alarm. The alarm sounds, indicating that the corresponding perforated plate 7 has substandard machining accuracy; and the execution end of the picking robot 3 is connected to a vision inspection module 33, which is electrically connected to the electrical control box 6 to control the picking robot 3 to grip the perforated plate 7; in addition, the pallet fixing platform 1 has a first pushing cylinder 15 and a second pushing cylinder 16 respectively on the side of the pallet body 11, and the directions of translation of the pallet body 11 by the first pushing cylinder 15 and the second pushing cylinder 16 are perpendicular to each other. The tray body 11 is provided with several positioning blocks 17 around its perimeter. The first pushing cylinder 15 and the second pushing cylinder 16 push the tray body 11 against the corresponding positioning blocks 17 to achieve clamping and locking of the tray body 11. The tray fixing platform 1 is provided with a hot air drying device 18, which includes a hot air blower 181 and a hot air pipe 182 connected to the air outlet of the hot air blower 181. The hot air outlet of the hot air pipe 182 faces the upper surface of the tray body 11 to blow and dry the perforated plate 7 in the tray body 11.

[0044] The basic working principle of this invention is as follows: When it is necessary to inspect a perforated plate 7 of a predetermined specification, the translation module 5 first moves the tooling fixing table 51 to align with the tooling storage 41. Then, the multi-axis gripper mechanism 42 clamps the inspection tooling 43 of the predetermined specification and installs it into the corresponding mounting hole 511 on the tooling fixing table 51. At this time, the lifting clamping module 21 drives the lower pressing tooling 221 and the upper lifting tooling 231 to maintain a separated state through the upper lifting table 22 and the lower lifting table 23. After that, the translation module 5 moves the plate 7 with the inspection tooling 43 installed... The tooling fixing table 51 moves between the lower pressing tooling 221 and the upper lifting tooling 231. Then, the picking robot 3 grabs the perforated plate 7 of a predetermined specification from the pallet body 11 and places it into the stepped hole 432 on the inspection tooling 43. Afterward, the lifting clamping module 21 drives the lower pressing tooling 221 and the upper lifting tooling 231 to clamp them on the upper and lower sides of the inspection tooling 43 through the upper lifting platform 22 and the lower lifting platform 23. This causes the water inlet pipe 232 of the upper lifting tooling 231 to pass through the water passage hole 431 of the inspection tooling 43 and the inner hole 71 of the perforated plate 7 in sequence before connecting with the lower pressing tooling 231. The outlet pipe 222 of the pressure fixture 221 is connected, and then liquid with a predetermined flow rate and pressure is introduced into the inlet pipe 232. After the liquid flow rate stabilizes, the flow velocity difference measured by the inlet flow meter 2321 and the outlet flow meter 2221 is calculated and compared with the parameters in the standard library to determine whether the orifice plate 7 is qualified. The diameter of the water passage hole 431 of the detection fixture 43 is greater than or equal to the inner diameter of the orifice plate 7, which can avoid the detection fixture 43 from generating resistance to the liquid flowing through the orifice plate 7 and affecting the detection results. In addition, the flow rate, flow velocity and pressure of the liquid introduced into the inlet pipe 232 in this device can be precisely controlled by the existing pumping device, so that this device can simulate the actual working environment of the orifice plate 7 to perform dynamic detection of liquid flow. It can restore the fluid pressure, flow velocity and flow state when the orifice plate 7 is actually working. The detection data is close to the actual performance of actual use, and the detection results are accurate and reliable. It effectively avoids the problems of distortion of offline static detection data and large deviation from actual working conditions. At the same time, it realizes automated orifice plate 7 replacement and detection, with high detection efficiency and good consistency.

[0045] The above description is only a preferred embodiment of the present invention. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of this patent application are included in the scope of this patent application.

Claims

1. An automated flow resistance testing device for orifice plates, comprising a tray fixing platform (1), a flow resistance testing machine (2), a part-picking robot (3), and a tooling changing device (4), characterized in that: The tray fixing platform (1) is provided with a tray body (11) for placing the perforated plate (7); The tooling replacement device (4) includes a tooling storage library (41) and a multi-axis gripper mechanism (42). The tooling storage library (41) stores several matching testing toolings (43) for different specifications of orifice plates (7). The testing tooling (43) has a water passage hole (431) on the orifice plate (7), and the diameter of the water passage hole (431) is greater than or equal to the diameter of the inner hole (71) of the orifice plate (7). It also includes a translation module (5) and an electrical control box (6). The electrical control box (6) is electrically connected to the part-picking robot (3), the tooling changing device (4), and the translation module (5). The power output end of the translation module (5) is connected to a tooling fixing table (51). The translation module (5) is used to drive the tooling fixing table (51) to move between the tooling storage room (41) and the flow resistance tester (2). The tooling fixing table (51) has a mounting hole (511) corresponding to the testing tool (43). The multi-axis gripper mechanism (42) is used to grab the testing tool (43) and move it to the corresponding mounting hole (511). The testing tool (43) has a stepped hole (432) connected to the upper opening of the water passage hole (431). The part-picking robot (3) is used to grab the perforated plate (7), move it, and position it in the corresponding stepped hole (432). The flow resistance testing machine (2) includes a lifting clamping module (21), an upper lifting platform (22), and a lower lifting platform (23). The upper lifting platform (22) is provided with a pressing fixture (221), and the lower lifting platform (23) is provided with an upper lifting fixture (231). The lifting clamping module (21) is used to drive the upper lifting platform (22) and the lower lifting platform (23) to move closer or further apart, so that the pressing fixture (221) and the upper lifting fixture (231) switch between a clamping state and a separation state relative to the detection fixture (43). The device (231) is connected to an inlet pipe (232), and the inlet pipe (232) is equipped with an inlet flow meter (2321). The pressure fixture (221) is connected to an outlet pipe (222), and the outlet pipe (222) is equipped with an outlet flow meter (2221). When the detection fixture (43) is clamped between the pressure fixture (221) and the top fixture (231), the inlet pipe (232) passes through the water passage hole (431) of the detection fixture (43) and the inner hole (71) of the orifice plate (7) in sequence and then communicates with the outlet pipe (222).

2. The automated flow resistance detection equipment for orifice plates according to claim 1, characterized in that: The lower pressing fixture (221) includes an upper fixing component (2211) and a pressing sleeve component (2212). The upper fixing component (2211) is used to fix the pressing sleeve component (2212) on the upper lifting platform (22). The pressing sleeve component (2212) is connected to the water inlet end of the water outlet pipe (222). The upper top fixture (231) includes a lower fixing component (2311) and a top sleeve component (2312). The lower fixing component (2311) is used to fix the top sleeve component (2312) on the lower lifting platform (23). The top sleeve component (2312) is connected to the water outlet end of the water inlet pipe (232).

3. The automated flow resistance detection equipment for orifice plates according to claim 2, characterized in that: The pressure sleeve assembly (2212) includes a first sleeve (22121) and a lower pressure sleeve (22122) coaxially connected. The end of the first sleeve (22121) away from the lower pressure sleeve (22122) is connected to the water inlet end of the water outlet pipe (222), and a first sealing ring (22123) is provided between the first sleeve (22121) and the lower pressure sleeve (22122).

4. The automated flow resistance detection device for orifice plates according to any one of claims 2 or 3, characterized in that: The top sleeve assembly (2312) includes a second set of pipe fittings (23121) and an upper top sleeve (23122) connected coaxially. The end of the second set of pipe fittings (23121) away from the upper top sleeve (23122) is connected to the outlet end of the water inlet pipe (232), and a second sealing ring (23123) is provided between the second set of pipe fittings (23121) and the upper top sleeve (23122).

5. The automated flow resistance detection equipment for orifice plates according to claim 1, characterized in that: The tooling fixing table (51) is provided with a positioning cylinder (512), and the output end of the positioning cylinder (512) is provided with a positioning plate (5121). The positioning cylinder (512) drives the positioning plate (5121) to position and cooperate with the detection tooling (43).

6. The automated flow resistance detection equipment for orifice plates according to claim 1, characterized in that: The testing fixture (43) is provided with an upper anti-leakage sealing ring (433), and the upper top fixture (231) is provided with a lower anti-leakage sealing ring (23124). When the orifice plate (7) is clamped and positioned between the lower pressure fixture (221) and the upper top fixture (231), the upper end face of the testing fixture (43) and the lower pressure fixture (221) are sealed together by the upper anti-leakage sealing ring (433), and the lower end face of the testing fixture (43) and the upper top fixture (231) are sealed together by the lower anti-leakage sealing ring (23124).

7. The automated flow resistance detection equipment for orifice plates according to claim 1, characterized in that: The picking robot (3) includes a multi-axis robotic arm (31) and a quick-change gripper assembly (32). A gripper storage rack (12) is provided on the tray fixing platform (1). The gripper storage rack (12) stores several quick-change gripper assemblies (32) of different specifications. The execution end of the multi-axis robotic arm (31) is provided with a quick-change head (311). The picking robot (3) is quickly connected to the quick-change gripper assembly (32) of the corresponding specification through the quick-change head (311).

8. The automated flow resistance detection equipment for orifice plates according to claim 1, characterized in that: The tray body (11) is provided with several support members (13) for placing perforated plates (7). The tray body (11) is marked with a code corresponding to the specifications of the perforated plates (7). The tray fixing table (1) is provided with a barcode scanner (14) electrically connected to the electrical control box (6). The barcode scanner (14) is used to identify the code on the tray body (11) and drive the quick-change head (311) of the multi-axis robotic arm (31) to connect to the quick-change gripper assembly (32) of the corresponding specification according to the different specifications of the perforated plates (7). At the same time, it drives the multi-axis gripper mechanism (42) to clamp the corresponding specification of the inspection fixture (43) to the fixture fixing table (51).

9. The automated flow resistance detection equipment for orifice plates according to claim 1, characterized in that: The tooling storage warehouse (41) includes a storage turntable (411) and a rotary drive mechanism (412) for driving the storage turntable (411) to rotate. The rotary drive mechanism (412) is electrically connected to the electrical control box (6) and cooperates with the multi-axis gripper mechanism (42).

10. The automated flow resistance detection equipment for orifice plates according to claim 1, characterized in that: The upper tooling (231) is provided with water baffles (24) around its perimeter, and a water receiving trough (25) is provided below the water baffles (24).

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