Airtightness testing mechanism
By designing an airtightness testing mechanism, and utilizing mechanical rodless cylinders and gas-liquid booster cylinders to achieve automated airtightness testing of valve bodies, the problems of low automation and low testing efficiency in existing technologies have been solved, achieving efficient, automated, and economical testing results.
Patent Information
- Application Number
- CN202520344110.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-02-28
AI Technical Summary
Existing valve body sealing tests have low automation, low testing efficiency, and are prone to errors.
Design an airtightness testing mechanism, including an airtight base plate, a column, a mechanical rodless cylinder, a guide rail, a slider, a through-beam optical axis, a through-beam photoelectric sensor, a guide rail slide plate, an exhaust throttle valve, a rodless cylinder slide plate, a rodless cylinder cylinder, a raised optical axis, a raised plate, replaceable tooling, a press base plate, a pneumatic-hydraulic booster cylinder, a press plate base plate, and a vent plate. The product is placed by grippers, the mechanical rodless cylinder drives the tooling to move, and the pneumatic-hydraulic booster cylinder presses down on the vent plate to perform airtightness testing.
It achieves efficient and automated valve body airtightness testing, improves testing efficiency, reduces human error, and has the advantages of simple operation, time saving, and economy.
Smart Images
Figure CN223841379U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of valve body airtightness testing technology, and more specifically, to an airtightness testing mechanism. Background Technology
[0002] Valve bodies are widely used in industries such as petroleum, power generation, chemical, papermaking, nuclear energy, aviation, and rocketry. The sealing performance of a valve body is one of its most important indicators, and each valve body must undergo a sealing test after production.
[0003] Currently, valve body sealing tests are generally performed manually, which can only test one valve body at a time. This low level of automation leads to low testing efficiency. Furthermore, manual sorting of tested valve bodies is prone to errors.
[0004] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Utility Model Content
[0005] The purpose of this utility model is to provide an airtightness testing mechanism that is simple to operate, highly efficient, time-saving, highly automated, and economical, and has promotional significance.
[0006] This utility model provides an airtightness testing mechanism, including an airtight base plate, columns, a mechanical rodless cylinder, guide rails, sliders, a through-beam optical axis, a through-beam photoelectric sensor, a guide rail slide plate, an exhaust throttle valve, a rodless cylinder slide plate, a rodless cylinder cylinder, a raised optical axis, a raised plate, replaceable tooling, a press base plate, a gas-hydraulic booster cylinder, a press plate base, and a vent plate; at least one column is fixed at each of the two side openings on the airtight base plate; two parallel guide rails are connected between the two columns on the airtight base plate; the mechanical rodless cylinder is connected between the two guide rails on the airtight base plate; an exhaust throttle valve is installed at both ends of the mechanical rodless cylinder; a rodless cylinder slide plate is slidably connected to the mechanical rodless cylinder; a rodless cylinder cylinder is vertically connected to the middle of the rodless cylinder slide plate; sliders are slidably connected to the guide rails; two... The sides are respectively connected to the two sliders; the rodless cylinder cylinder passes through the center hole of the guide rail slide plate; the four edges of the guide rail slide plate are vertically connected to the shim optical axis, the other end of the shim optical axis is connected to the shim plate, and the replaceable tooling is connected to the shim plate; two opposing optical axes are connected to the end of the airtight base plate away from the column, the two opposing optical axes are respectively located outside the guide rail, the two opposing optical axes are symmetrical about the mechanical rodless cylinder, and the opposing photoelectric device is connected to the other end of the opposing optical axis; the press base plate is connected to the other end of the column, the press base plate has a mounting hole in the middle, the gas-liquid booster cylinder is fixed to the press base plate, the output end of the gas-liquid booster cylinder passes through the mounting hole; the output end of the gas-liquid booster cylinder is connected to the pressure plate base plate, and the vent plate is connected to the pressure plate base plate.
[0007] Using the above technical solution, this utility model places the product to be tested on the replaceable fixture using grippers, performs photoelectric detection, and then moves the replaceable fixture to the front guide rail under the vent plate using a mechanical rodless cylinder. The gas-liquid booster cylinder first presses it down, and then the vent plate vents air. The gas-liquid booster cylinder then presses the vent plate down onto the product to perform air tightness testing.
[0008] Furthermore, the airtightness testing mechanism also includes a locking nut, and four columns are fixed at the two side openings on the airtight base plate. Connecting holes are provided at the four side openings of the press base plate, and the other end of the column passes through the connecting hole and is locked and fixed by the locking nut.
[0009] Furthermore, the airtightness testing mechanism also includes a horizontal support, with two horizontal supports connected to the airtight base plate. The horizontal support is connected to the through-beam optical axis, and the other end of the through-beam optical axis is connected to the clamping block. The through-beam photoelectric device is installed on the clamping block.
[0010] Furthermore, the airtightness testing mechanism also includes a buffer block and an adjustable buffer. Two buffer blocks are connected to the top of the airtight base plate. The two buffer blocks are located at both ends of the airtight base plate. The buffer blocks are located between the mechanical rodless cylinder and the guide rail, and the buffer blocks are located on the side of the mechanical rodless cylinder away from the exhaust throttle valve. The adjustable buffer is connected to the buffer block.
[0011] Furthermore, finite-height cylinders are vertically connected at the four corners of the replaceable tooling.
[0012] Furthermore, the airtightness testing mechanism also includes a flange linear bearing, a guide optical axis, and a guide column upper plate. Two flange linear bearings are respectively connected to the two sides of the gas-liquid booster cylinder on the press base plate. The guide optical axis is inserted into the flange linear bearing and connected to the press plate base. The two ends of the guide column upper plate are respectively connected to the two guide optical axes on one side of the gas-liquid booster cylinder.
[0013] Furthermore, the airtightness testing mechanism also includes a floating upper block and a floating lower block. The floating upper block is connected to the output end of the gas-liquid booster cylinder, and the floating lower block is connected to the pressure plate base plate. The floating upper block is locked in the groove of the floating lower block.
[0014] Furthermore, the airtightness testing mechanism also includes a grooved photoelectric profile, a grooved photoelectric device, and a grooved sheet metal; the grooved photoelectric profile is connected to the side of the press base plate located on the gas-liquid booster cylinder, and the grooved photoelectric device is installed on the grooved photoelectric profile; the grooved sheet metal is installed on the upper plate of the guide post located on the same side of the grooved photoelectric profile; when the upper plate of the guide post moves up and down, the grooved sheet metal will pass through the opening of the grooved photoelectric device.
[0015] The airtightness testing mechanism provided by this utility model uses grippers to place the product to be tested on a replaceable fixture. A photoelectric sensor is positioned, and a mechanical rodless cylinder moves the replaceable fixture along the leading guide rail to below the venting plate. A gas-liquid booster cylinder first presses it down, then the venting plate vents air. The gas-liquid booster cylinder then presses the venting plate down onto the product to perform the airtightness test. This mechanism is characterized by simple operation, high efficiency, high automation, time saving, and high economic benefits, and is therefore worthy of widespread application. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the airtightness testing mechanism provided in an embodiment of the present invention.
[0017] Figure 2 for Figure 1 A schematic diagram of the air tightness testing mechanism.
[0018] Figure 3 for Figure 1 A front view diagram of the gas tightness testing mechanism.
[0019] Figure 4 for Figure 1 A schematic diagram of the structure of the gas tightness testing mechanism from another perspective.
[0020] Figure 5 for Figure 1 A schematic diagram of the airtight base plate of the airtightness testing mechanism.
[0021] Figure 6 for Figure 1 A schematic diagram of the gas-liquid booster cylinder of the gas tightness testing mechanism.
[0022] The reference numerals and components involved in the accompanying drawings are shown below:
[0023] 1. Airtight base plate; 2. Column; 3. Mechanical rodless cylinder.
[0024] 4. Guide rail; 5. Slider; 6. Optical axis of the beam.
[0025] 7. Through-beam photoelectric sensor; 8. Guide rail slide plate; 9. Exhaust throttle valve.
[0026] 10. Rodless cylinder slide plate; 11. Rodless cylinder cylinder; 12. Elevated optical axis.
[0027] 13. Elevating plate 14. Replaceable tooling 15. Press base plate
[0028] 16. Gas-liquid booster cylinder; 17. Pressure plate base plate; 18. Ventilation plate.
[0029] 19. Mounting hole; 20. Locking nut; 21. Connecting hole
[0030] 22. Horizontal support; 23. Clamping block; 24. Buffer stop.
[0031] 25. Adjustable buffer; 26. Height-limiting cylinder; 27. Flange linear bearing.
[0032] 28. Guide optical axis; 29. Upper guide plate; 30. Floating upper block.
[0033] 31. Floating lower block; 32. Channel-shaped photoelectric profile; 33. Channel-shaped photoelectric...
[0034] 34. Channel-shaped sheet metal Detailed Implementation
[0035] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.
[0036] The terms "first," "second," "third," "fourth," etc., used in the specification and claims of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.
[0037] Example 1
[0038] Figure 1 This is a schematic diagram of the airtightness testing mechanism provided in an embodiment of the present invention. Figure 2 for Figure 1 A schematic diagram of the air tightness testing mechanism. Figure 3 for Figure 1 Front view diagram of the gas tightness testing mechanism. Figure 4 for Figure 1 A structural schematic diagram of the gas tightness testing mechanism from another perspective. Figure 5 for Figure 1 A schematic diagram of the airtight base plate of the airtightness testing mechanism. Figure 6 for Figure 1 A schematic diagram of the gas-liquid booster cylinder in the gas tightness testing mechanism. Please refer to... Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6The airtightness testing mechanism provided in this embodiment includes an airtight base plate 1, columns 2, a mechanical rodless cylinder 3, a guide rail 4, a slider 5, a through-beam optical axis 6, a through-beam photoelectric sensor 7, a guide rail slide plate 8, an exhaust throttle valve 9, a rodless cylinder slide plate 10, a rodless cylinder cylinder 11, a raised optical axis 12, a raised plate 13, a replaceable tooling 14, a press base plate 15, a gas-liquid booster cylinder 16, a press plate base 17, and a vent plate 18; at least one of the columns 2 is fixed at each of the two side openings on the airtight base plate 1. Two parallel guide rails 4 are connected between the two uprights 2 on the airtight base plate 1. A mechanical rodless cylinder 3 is connected between the two guide rails 4 on the airtight base plate 1. Exhaust throttle valves 9 are installed at both ends of the mechanical rodless cylinder 3. A rodless cylinder slide plate 10 is slidably connected to the mechanical rodless cylinder 3. A rodless cylinder cylinder cylinder 11 is vertically connected to the middle of the rodless cylinder slide plate 10. A slider 5 is slidably connected to the guide rails 4. Below the guide rail slide plate 8... The two sides are respectively connected to the two sliders 5; the rodless cylinder cylinder 11 passes through the center hole of the guide rail slide plate 8; the four edges of the guide rail slide plate 8 are vertically connected to the raised optical axis 12, the other end of the raised optical axis 12 is connected to the raised plate 13, and the replaceable tooling 14 is connected to the raised plate 13; two opposing optical axes 6 are connected to the airtight base plate 1 at the end away from the column 2, the two opposing optical axes 6 are respectively located outside the guide rail 4, and the two opposing optical axes 6 are connected to the two opposing optical axes 2. The optical axis 6 is symmetrical about the mechanical rodless cylinder 3, and the photoelectric sensor 7 is connected to the other end of the optical axis 6; the press base plate 15 is connected to the other end of the column 2, and the press base plate 15 has a mounting hole 19 in the middle. The gas-liquid booster cylinder 16 is fixed on the press base plate 15, and the output end of the gas-liquid booster cylinder 16 passes through the mounting hole 19; the output end of the gas-liquid booster cylinder 16 is connected to the pressure plate base plate 17, and the vent plate 18 is connected to the pressure plate base plate 17.
[0039] It should be noted that this utility model uses grippers to place the product to be tested on the replaceable fixture 14, the photoelectric sensor 7 detects the product in place, the mechanical rodless cylinder 3 drives the replaceable fixture 14 to move along the leading guide rail to below the vent plate 18, the gas-liquid booster cylinder 16 drives the vent plate 18 to press down on the product, and then the vent plate 18 starts to ventilate to perform air tightness testing. This utility model has the characteristics of simple operation, high efficiency, high degree of automation, time saving, and high economy, and has promotional significance.
[0040] Further reference Figure 1The airtightness testing mechanism of this utility model also includes a locking nut 20. Four columns 2 are fixed at the two side openings on the airtight base plate 1 respectively. Connection holes 21 are provided at the four side openings of the press base plate 15. The other end of the column 2 passes through the connection hole 21 and is locked and fixed by the locking nut 20.
[0041] Further reference Figure 5 The airtightness testing mechanism of this utility model also includes a horizontal support 22. Two horizontal supports 22 are connected to the airtight base plate 1. The through-beam optical axis 6 is connected to the horizontal support 22. The other end of the through-beam optical axis 6 is connected to the clamping block 23. The through-beam photoelectric device 7 is installed on the clamping block 23.
[0042] Further reference Figure 5 The airtightness testing mechanism of this utility model also includes a buffer block 24 and an adjustable buffer 25. Two buffer blocks 24 are connected on the airtight base plate 1. The two buffer blocks 24 are located at both ends of the airtight base plate 1. The buffer blocks 24 are located between the mechanical rodless cylinder 3 and the guide rail 4, and the buffer blocks 24 are located on the side of the mechanical rodless cylinder 3 away from the exhaust throttle valve 9. The adjustable buffer 25 is connected to the buffer block 24.
[0043] Further reference Figure 1 In this invention, height-limited cylinders 26 are vertically connected at the four corners of the replaceable tooling 14; the airtightness testing mechanism also includes flange linear bearings 27, guide optical shafts 28, and guide column upper plates 29. Two flange linear bearings 27 are respectively connected on both sides of the gas-liquid booster cylinder 16 on the press base plate 15. The guide optical shafts 28 are inserted into the flange linear bearings 27 and connected to the press plate base plate 17. The two ends of the guide column upper plates 29 are respectively connected to the two guide optical shafts 28 on one side of the gas-liquid booster cylinder 16.
[0044] Further reference Figure 2 , Figure 3 The airtightness testing mechanism of this utility model also includes a floating upper block 30 and a floating lower block 31. The floating upper block 30 is connected to the output end of the gas-liquid booster cylinder 16, and the floating lower block 31 is connected to the pressure plate base plate 17. The floating upper block 30 is stuck in the groove of the floating lower block 31.
[0045] Further reference Figure 3 , Figure 6The airtightness testing mechanism of this utility model also includes a grooved photoelectric profile 32, a grooved photoelectric sensor 33, and a grooved sheet metal 34; the grooved photoelectric profile 32 is connected to the side of the gas-liquid booster cylinder 16 on the press base plate 15, and the grooved photoelectric sensor 33 is installed on the grooved photoelectric profile 32; the grooved sheet metal 34 is installed on the upper guide plate 29 on the same side of the grooved photoelectric profile 32; when the upper guide plate 29 moves up and down, the grooved sheet metal 34 will pass through the opening of the grooved photoelectric sensor 33.
[0046] As can be seen from the above description, the advantages of this utility model are:
[0047] The airtightness testing mechanism provided by this utility model uses grippers to place the product to be tested on a replaceable fixture 14. The photoelectric sensor 7 detects the product in place, and the mechanical rodless cylinder 3 drives the replaceable fixture 14 to move along the leading guide rail to below the vent plate 18. The gas-liquid booster cylinder 16 drives the vent plate 18 to press down on the product, and then the vent plate 18 starts to ventilate to perform airtightness testing. This utility model has the characteristics of simple operation, high efficiency, high degree of automation, time saving, and high economy, and has promotional significance.
[0048] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. An airtightness testing mechanism, characterized in that, Includes an airtight base plate (1), a column (2), a mechanical rodless cylinder (3), a guide rail (4), a slider (5), a through-beam optical axis (6), a through-beam photoelectric sensor (7), a guide rail slide plate (8), an exhaust throttle valve (9), a rodless cylinder slide plate (10), a rodless cylinder cylinder (11), a raised optical axis (12), a raised plate (13), a replaceable tooling (14), a press base plate (15), a pneumatic-hydraulic booster cylinder (16), a press plate base plate (17), and a vent plate (18); At least one column (2) is fixed at each of the two sides of the airtight base plate (1). Two parallel guide rails (4) are connected between the two columns (2) on the airtight base plate (1). A mechanical rodless cylinder (3) is connected between the two guide rails (4) on the airtight base plate (1). An exhaust throttle valve (9) is installed at both ends of the mechanical rodless cylinder (3). The rodless cylinder (3) is slidably connected to the rodless cylinder slide plate (10), and the rodless cylinder cylinder (11) is vertically connected to the middle of the rodless cylinder slide plate (10). The slider (5) is slidably connected to the guide rail (4), and the two sides of the guide rail slide plate (8) are respectively connected to the two sliders (5); the rodless cylinder cylinder (11) passes through the center hole of the guide rail slide plate (8); the four sides of the guide rail slide plate (8) are vertically connected to the shim optical shaft (12), the other end of the shim optical shaft (12) is connected to the shim plate (13), and the replaceable tooling (14) is connected to the shim plate (13); Two opposing optical axes (6) are connected to one end of the airtight base plate (1) away from the column (2). The two opposing optical axes (6) are located on the outside of the guide rail (4) respectively. The two opposing optical axes (6) are symmetrical about the mechanical rodless cylinder (3). The opposing photoelectric device (7) is connected to the other end of the opposing optical axis (6). The press base plate (15) is connected to the other end of the column (2). The press base plate (15) has a mounting hole (19) in the middle. The gas-liquid booster cylinder (16) is fixed on the press base plate (15). The output end of the gas-liquid booster cylinder (16) passes through the mounting hole (19). The output end of the gas-liquid booster cylinder (16) is connected to the pressure plate base plate (17). The vent plate (18) is connected to the pressure plate base plate (17).
2. The airtightness testing mechanism according to claim 1, characterized in that, The airtightness testing mechanism also includes a locking nut (20), four columns (2) are fixed at the two sides of the airtight base plate (1), and connection holes (21) are provided at the four sides of the press base plate (15). The other end of the column (2) passes through the connection hole (21) and is locked and fixed by the locking nut (20).
3. The airtightness testing mechanism according to claim 1, characterized in that, The airtightness testing mechanism also includes a horizontal support (22), two horizontal supports (22) are connected to the airtight base plate (1), the through-beam optical axis (6) is connected to the horizontal support (22), the other end of the through-beam optical axis (6) is connected to a clamp (23), and the through-beam photoelectric device (7) is installed on the clamp (23).
4. The airtightness testing mechanism according to claim 1, characterized in that, The airtightness testing mechanism also includes a buffer block (24) and an adjustable buffer (25). Two buffer blocks (24) are connected on the airtight base plate (1). The two buffer blocks (24) are located at both ends of the airtight base plate (1). The buffer blocks (24) are located between the mechanical rodless cylinder (3) and the guide rail (4), and the buffer blocks (24) are located on the side of the mechanical rodless cylinder (3) away from the exhaust throttle valve (9). The adjustable buffer (25) is connected to the buffer blocks (24).
5. The airtightness testing mechanism according to claim 1, characterized in that, A finite-height cylinder (26) is vertically connected to the four corners of the replaceable tooling (14).
6. The airtightness testing mechanism according to claim 1, characterized in that, The airtightness testing mechanism also includes a flange linear bearing (27), a guide optical shaft (28), and a guide column upper plate (29). Two flange linear bearings (27) are connected to the two sides of the gas-liquid booster cylinder (16) on the press base plate (15). The guide optical shaft (28) is inserted into the flange linear bearing (27) and connected to the press plate base plate (17). The two ends of the guide column upper plate (29) are respectively connected to the two guide optical shafts (28) on one side of the gas-liquid booster cylinder (16).
7. The airtightness testing mechanism according to claim 1, characterized in that, The airtightness testing mechanism also includes a floating upper block (30) and a floating lower block (31). The floating upper block (30) is connected to the output end of the gas-liquid booster cylinder (16), and the floating lower block (31) is connected to the pressure plate base plate (17). The floating upper block (30) is stuck in the groove of the floating lower block (31).
8. The airtightness testing mechanism according to claim 6, characterized in that, The air tightness testing mechanism also includes a grooved photoelectric profile (32), a grooved photoelectric device (33), and a grooved sheet metal (34); the grooved photoelectric profile (32) is connected to one side of the gas-liquid booster cylinder (16) on the press base plate (15), and the grooved photoelectric device (33) is installed on the grooved photoelectric profile (32); The grooved sheet metal (34) is installed on the upper plate (29) of the guide post located on the same side as the grooved photoelectric profile (32); when the upper plate (29) of the guide post moves up and down, the grooved sheet metal (34) will pass through the opening of the grooved photoelectric profile (33).