A casting tightness detection device

Abstract

The utility model discloses a kind of casting sealing property detection equipment, it is related to casting detection technical field, to solve the problem of inconvenient data collection in the existing leak detection process, need to be sorted out and the problem that defective product management loss easily leads to mixed material outflow, including precision leak detector, computer, programmable logic controller, leak detection tooling, defective product recycling box and the like component, through precision leak detector and computer communication, utilize special software to realize detection data real-time transmission record;When detecting appears defective product, system is controlled by the interactive communication of equipment, computer and programmable logic controller, realizes defective product collection regulation, eliminates non-standardized operation, with mistake-proofing function, improve the efficiency and quality control level of casting sealing performance detection.

Description

Technical Field

[0001] This utility model relates to the field of casting inspection technology, and in particular to a casting sealing inspection device. Background Technology

[0002] In the casting production process, sealing performance testing is a crucial step in ensuring product quality. Currently, casting sealing performance testing typically relies on a single leak detection instrument combined with leak detection fixtures, a method with significant drawbacks:

[0003] On the one hand, the collection and management of test data is inconvenient. Key data such as pressure values ​​and leakage rates generated during the testing process cannot be recorded in real time and need to be manually compiled after the test is completed. This not only increases the workload but also makes it easy for data to be missed or incorrect due to human operation, making it difficult to trace and analyze the test data.

[0004] On the other hand, there are loopholes in the management of defective products. Detected defective products lack an effective control mechanism and rely solely on manual sorting and recording, which easily leads to defective products being mixed with qualified products. This poses a risk that defective products will enter the market, potentially causing customer complaints and affecting product reputation and corporate image. Utility Model Content

[0005] To address the technical problems existing in the background art, this utility model proposes a casting sealing performance testing device.

[0006] This utility model proposes a casting sealing performance testing device, including an equipment cabinet. A leak detection fixture is installed in the middle of the equipment cabinet. An air tank and a computer host are installed at the bottom of the equipment cabinet. A programmable controller, a power supply, and a pneumatic control valve are installed in the middle of the back of the equipment cabinet. A precision pressure regulating valve is installed on the side of the equipment cabinet. A precision leak detector and a display are installed on the top front of the equipment cabinet.

[0007] Furthermore, a bracket is provided on one side of the equipment cabinet, and a recycling bin is provided on the upper part of the bracket.

[0008] Furthermore, a photoelectric sensor is embedded in the back of the recycling bin, and the photoelectric sensor is connected to the programmable controller via a wire.

[0009] Furthermore, symmetrical start switches are installed in the middle of the equipment cabinet, and the start switches are connected to the precision leak detector via wires.

[0010] Furthermore, safety light curtains are symmetrically installed in the middle of the equipment cabinet to provide safety protection during the testing process.

[0011] Furthermore, a three-color alarm light is installed on the top of the equipment cabinet to remind staff after the inspection is completed.

[0012] Furthermore, a scanning gun is mounted on the side of the equipment cabinet to record information about the casting being inspected.

[0013] Furthermore, the leak detection fixture includes a frame installed in the equipment cabinet, a lifting seat slidably connected inside the frame, a cylinder installed at the top inside the equipment cabinet, and the telescopic end of the cylinder extending into the inside of the frame and connected to the lifting seat.

[0014] Furthermore, a fixture is installed at the bottom of the inner part of the frame to fix the casting to be tested. An upper mold base is installed at the bottom of the lifting seat. A casting receiving groove adapted to the casting to be tested is opened at the bottom of the upper mold base. An air nozzle is installed at the top of the inner part of the casting receiving groove. A pressure sensor is installed inside the air outlet of the air nozzle. The air inlet of the air nozzle is connected to a precision pressure regulating valve through an air pipe. The air outlet of the air nozzle is connected to the air port of the casting to be tested.

[0015] The beneficial effects of this utility model are as follows: By communicating with a computer through a precision leak detector and using dedicated software, real-time data transmission and recording are achieved, facilitating the recording of various test data. At the same time, through interactive communication and control between the device, computer, and programmable controller, defective products can be collected and controlled when tests fail, eliminating non-standardized process operations. This effectively solves the problems of inconvenient data collection, the need for post-processing, and the inability to effectively manage defective products and the risk of mixed material leakage in the existing leak detection process. It not only improves data management efficiency but also ensures product quality control and reduces customer concerns. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of the present invention from a frontal view;

[0017] Figure 2 This is a structural schematic diagram of the present invention from the rear view.

[0018] Figure 3 This is a schematic diagram of the leak detection tool in this utility model;

[0019] Figure 4 This is a schematic diagram of the fixture and upper mold base in this utility model.

[0020] In the diagram: 1. Equipment cabinet; 2. Bracket; 3. Leak detection fixture; 31. Frame; 32. Lifting seat; 33. Cylinder; 34. Fixture; 35. Upper mold base; 36. Casting receiving tank; 37. Air nozzle; 38. Pressure sensor; 4. Air storage tank; 5. Computer host; 6. Programmable controller; 7. Equipment power supply; 8. Pneumatic control valve; 9. Precision pressure regulating valve; 10. Precision leak detector; 11. Monitor; 12. Start switch; 13. Safety light curtain; 14. Three-color alarm light; 15. Recycling bin; 16. Photoelectric sensor; 17. Scanner. Detailed Implementation

[0021] Reference Figure 1-4 The present invention proposes a casting sealing performance testing device, including a device cabinet 1, which serves as the overall mounting carrier. Its structure and the installation positions of each component are as follows:

[0022] Leak detection fixture 3 is installed in the middle of equipment cabinet 1 for sealing and testing of castings;

[0023] The bottom of the equipment cabinet 1 is equipped with an air tank 4 and a computer host 5. The air tank 4 is used to store compressed gas, and the computer host 5 is used for data processing and control.

[0024] The programmable controller 6, the equipment power supply 7, and the pneumatic control valve 8 are respectively installed in the middle of the back of the equipment cabinet 1. The programmable controller 6 serves as the core control unit, the equipment power supply 7 supplies power to all components, and the pneumatic control valve 8 is used to control the gas flow (the programmable controller 6 is a Siemens S7-1214C model, which has 14 input / 10 output digital channels, supports RS485 communication, and can realize multi-device interactive control).

[0025] A precision pressure regulating valve 9 is installed on the side of the equipment cabinet 1 to stabilize the detection air pressure (the precision pressure regulating valve 9 is model SMCIR2020-02, with a pressure regulating range of 0.05-0.85MPa and an accuracy of ±1%, used to stabilize the air pressure input to the leak detection fixture (3)).

[0026] A precision leak detector 10 and a display 11 are installed on the top front of the equipment cabinet 1. The precision leak detector 10 is used to detect the sealing performance of the casting, and the display 11 is used to display the test data in real time (the precision leak detector 10 is the Infukang HLD5000 model, which has an accuracy of ±0.1Pa, supports multi-program switching, and can meet the testing needs of different types of castings, with a testing range covering 0-1000Pa).

[0027] A bracket 2 is installed on one side of the equipment cabinet 1, and a recycling bin 15 is installed on the upper part of the bracket 2 for recycling defective products;

[0028] A start switch 12 is also symmetrically installed in the middle of the equipment cabinet 1 to start the testing process;

[0029] Safety light curtains 13 are symmetrically installed in the middle of the equipment cabinet 1 for safety protection during the testing process (the safety light curtains 13 are Sick S300 models, with a protection height of 300mm, a resolution of 20mm, and an IP65 protection rating, which can effectively prevent safety accidents during the testing process).

[0030] A three-color alarm light 14 is installed at the top of the equipment cabinet 1 to indicate the status after the test is completed (the three-color alarm light 14 is a Tianyi JD501 model, with red, yellow and green to distinguish the status, and the sound level is 80-100dB, used for audible and visual indication of the test results).

[0031] A barcode scanner 17 is mounted on the side of the equipment cabinet 1 for inputting product information (the barcode scanner 17 is a Zebra DS2200 model, which supports USB interface connection and has a scanning speed of 100 times / second, and is used to quickly read product barcode information).

[0032] The specific communication connection structure is as follows:

[0033] The precision leak detector 10 is connected to the computer host 5 via an Ethernet cable and communicates using the TCP / IP protocol. The precision leak detector 10 transmits real-time detection data (such as pressure value, leakage rate, etc.) to the computer host 5, and the computer host 5 records, stores and displays the data using dedicated development software.

[0034] The programmable controller 6 and the photoelectric sensor 16 are connected by a shielded wire. After the photoelectric sensor 16 detects that a defective product has been put into the recycling bin 15, it outputs a switch signal to the input terminal of the programmable controller 6 (the photoelectric sensor 16 is an Omron E3Z-D61 model, with a detection distance of 5-30cm and a response time of ≤1ms, used to detect whether a defective product has been put into the recycling bin 15).

[0035] The programmable controller 6 is connected to the start switch 12 via a wire. When the start switch 12 is pressed, it outputs a trigger signal to the programmable controller 6 to start the detection process.

[0036] The programmable controller 6 is connected to the safety light curtain 13 by a wire. When the safety light curtain 13 detects an abnormality (such as a human body approaching), it outputs a stop signal to the programmable controller 6 to interrupt the detection.

[0037] The programmable controller 6 is connected to the tri-color alarm light 14 via a wire. The programmable controller 6 outputs a control signal according to the detection result to control the switching of the red, yellow and green colors of the tri-color alarm light 14 and the sound and light prompts.

[0038] The programmable controller 6 is connected to the pneumatic valve 8 via a wire. The programmable controller 6 outputs a control signal to control the on / off state of the pneumatic valve 8.

[0039] The computer host 5 and the programmable controller 6 are connected via an RS485 communication line and use the Modbus protocol to realize data interaction. The computer host 5 transmits the test results (pass / fail) to the programmable controller 6, and the programmable controller 6 executes subsequent actions (such as equipment reset control) based on the results.

[0040] The barcode scanner 17 is connected to the computer host 5 via a USB data cable. After the barcode scanner 17 reads the product barcode, it transmits the barcode information to the computer host 5, thereby binding the product information with the test data.

[0041] The power supply 7 is connected to the precision leak detector 10, computer host 5, programmable controller 6, safety light curtain 13 and other components via power cables, providing them with 220V AC power (some components such as sensors are converted to 24V DC power through power modules).

[0042] It should be noted that the communication connection structure is a technically known subject of art and will not be described in detail here.

[0043] The specific gas path connection structure is as follows:

[0044] The outlet of the gas storage tank 4 is connected to the inlet of the precision pressure regulating valve 9 through a high-pressure air pipe. The outlet of the precision pressure regulating valve 9 is connected to the inlet of the air control valve 8 through an air pipe. The outlet of the air control valve 8 is connected to the inlet of the air nozzle 37 of the leak detection tool 3 through an air pipe.

[0045] The compressed gas stored in the gas tank 4 (pressure 0.6-0.8MPa) is regulated by the precision pressure regulating valve 9 to output a stable gas pressure (adjusted according to product requirements, usually 0.1-0.5MPa).

[0046] After receiving the control signal from the programmable controller 6, the pneumatic control valve 8 opens and delivers the gas with stable pressure to the gas nozzle 37 (the pneumatic control valve 8 is model SMCVQ7-6-FG-D-3Z, with a working pressure of 0.15-0.8MPa and a response time of ≤50ms, and is used to control the gas flow direction of the leak detection tool (3)).

[0047] The air outlet of the air nozzle 37 is connected to the air port of the casting being tested, and the gas enters the interior of the casting. The pressure sensor 38 detects the internal pressure changes in real time and transmits the pressure signal to the precision leak detector 10.

[0048] In addition, the leak detection fixture 3 includes a frame 31 installed in the equipment cabinet 1. A lifting seat 32 is slidably connected inside the frame 31. A cylinder 33 is installed at the top inside the equipment cabinet 1. The telescopic end of the cylinder 33 extends into the inside of the frame 31 and is connected to the lifting seat 32. A fixture 34 is installed at the bottom inside the frame 31 to fix the casting to be tested. An upper mold base 35 is installed at the bottom of the lifting seat 32. A casting receiving groove 36 adapted to the casting to be tested is opened at the bottom of the upper mold base 35. An air nozzle 37 is installed at the top inside the casting receiving groove 36. A pressure sensor 38 is installed inside the air outlet of the air nozzle 37. The air inlet of the air nozzle 37 is connected to a precision pressure regulating valve 9 through an air pipe. The air outlet of the air nozzle 37 is connected to the air port of the casting to be tested.

[0049] During the testing process, the leak detection fixture 3 first places the casting to be tested in the fixture 34, and then the cylinder 33 pushes the lifting seat 32 down until the air outlet of the air nozzle 37 is connected with the air outlet of the casting to be tested.

[0050] Work process:

[0051] 1. Preparation stage: Press the equipment start button (located on the side of equipment cabinet 1), and the equipment power supply 7 supplies power to all components; the gas tank 4 begins to store gas until the preset pressure is reached; press the computer start button, and the computer host 5 is powered on and the display 11 lights up; adjust the gas pressure to the required value for testing through the precision pressure regulating valve 9; select the corresponding test program on the precision leak detector 10 according to the product type;

[0052] 2. Inspection Stage: The product barcode is scanned with barcode scanner 17, and the barcode information is transmitted to the computer host 5 and stored; the start switch 12 is pressed with both hands, and the start switch 12 transmits the signal to the programmable controller 6. The programmable controller 6 controls the pneumatic valve 8 to open, and gas enters the casting through the air nozzle 37; the precision leak detector 10 detects the internal pressure change of the casting in real time through the pressure sensor 38, and the detection data is transmitted to the computer host 5 via Ethernet and displayed in real time on the monitor 11; during the inspection, the safety light curtain 13 continues to work, and if an abnormality is detected, the inspection is interrupted through the programmable controller 6;

[0053] 3. Result Processing Stage: After the test, the precision leak detector 10 determines whether the product is qualified and transmits the result to the computer host 5 and the programmable controller 6. The programmable controller 6 controls the three-color alarm light 14 to operate (green light for qualified, red light for defective and sounding an alarm). If the product is defective, the operator must put it into the recycling bin 15. After the photoelectric sensor 16 detects the defective product being put in, it sends a signal to the programmable controller 6. The programmable controller 6 controls the equipment to reset before the next test can be performed. If the product is qualified, the equipment is directly reset and awaits the next test.

[0054] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A casting tightness detection apparatus comprising an apparatus cabinet (1), characterized in that, The equipment cabinet (1) is equipped with a leak detection fixture (3) in the middle. The equipment cabinet (1) is equipped with a gas tank (4) and a computer host (5) at the bottom of the interior. The equipment cabinet (1) is equipped with a programmable controller (6), a power supply (7), and a pneumatic control valve (8) in the middle of the back. The equipment cabinet (1) is equipped with a precision pressure regulating valve (9) on the side. The equipment cabinet (1) is equipped with a precision leak detector (10) and a display (11) on the top front.

2. The casting leak detection apparatus according to claim 1, characterized by A bracket (2) is provided on one side of the equipment cabinet (1), and a recycling bin (15) is provided on the upper part of the bracket (2).

3. The casting leak detection apparatus according to claim 2, wherein A photoelectric sensor (16) is embedded in the back of the recycling bin (15), and the photoelectric sensor (16) is connected to the programmable controller (6) by a wire.

4. The casting leak detection apparatus according to claim 1, characterized by A start switch (12) is symmetrically installed in the middle of the equipment cabinet (1), and the start switch (12) is connected to the precision leak detector (10) by a wire.

5. The casting leak detection apparatus according to claim 1, wherein Safety light curtains (13) are symmetrically installed in the middle of the equipment cabinet (1) to provide safety protection during the testing process.

6. The casting sealing performance testing equipment according to claim 1, characterized in that, The top of the equipment cabinet (1) is equipped with a three-color alarm light (14) to remind staff after the test is completed.

7. The casting sealing performance testing equipment according to claim 1, characterized in that, A scanner (17) is also mounted on the side of the equipment cabinet (1) to record information about the casting being inspected.

8. The casting sealing performance testing equipment according to claim 1, characterized in that, The leak detection fixture (3) includes a frame (31) installed in the equipment cabinet (1), a lifting seat (32) is slidably connected inside the frame (31), and a cylinder (33) is installed at the top inside the equipment cabinet (1). The telescopic end of the cylinder (33) extends into the inside of the frame (31) and is connected to the lifting seat (32).

9. The casting sealing performance testing equipment according to claim 8, characterized in that, The frame body (31) has a fixture (34) installed at the bottom inside to fix the casting to be tested. The lifting seat (32) has an upper mold base (35) installed at the bottom. The upper mold base (35) has a casting receiving groove (36) adapted to the casting to be tested at the bottom. The casting receiving groove (36) has an air nozzle (37) installed at the top inside. The air outlet of the air nozzle (37) has a pressure sensor (38) installed inside. The air inlet of the air nozzle (37) is connected to a precision pressure regulating valve (9) through an air pipe. The air outlet of the air nozzle (37) is connected to the air port of the casting to be tested.

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