An air tightness detection device

Abstract

The utility model discloses a kind of air-tightness detection devices, including respectively being arranged on rack press, lower sealing block, control component and leakage appearance detection component;Press is equipped with the liftable presser plate, and the upper sealing block is detachably installed in the pull-out slot of presser plate lower end;Lower sealing block is placed below upper sealing block, and is set on the top of rack by drive module;Lower sealing block is detachably connected with drive module;Control component is suitable for by presser plate drive upper sealing block and lower sealing block abutment closure, to make the upper sealing groove on the lower end surface of upper sealing block and the lower sealing groove of lower sealing block top surround and form closed test cavity;Leakage appearance detection component is connected with upper sealing groove by gas pipeline and communicates;Control component is also suitable for controlling leakage appearance detection component to carry out air-tightness test to electric actuator placed in test cavity.The utility model can carry out air-tightness test to electric actuator, simple operation, and effectively protect electrical element inside electric actuator.

Description

Technical Field

[0001] This utility model relates to the technical field of airtightness testing devices, and specifically to an airtightness testing device. Background Technology

[0002] An electric actuator is used to convert its own energy into mechanical motion, and its final output is rotary mechanical motion. The electric actuator is equipped with connectors for connecting to the wiring harness interfaces of external components.

[0003] Chinese Patent CN309180592S discloses an electric actuator. The actuator's housing is formed by the snap-fitting of an upper housing and a lower housing. The lower housing has an upper edge protrusion on its upper outer periphery, and the upper housing has a lower edge protrusion on its lower outer periphery that abuts against the top surface of the upper edge protrusion. When the upper and lower edge protrusions are abutting, they form the edge protrusions of the electric actuator. The electric actuator includes a crank, which is positioned on top of the upper housing.

[0004] During the manufacturing and production of electric actuators, after the complete assembly of the electric actuator, quality inspection is required. This inspection includes, but is not limited to, airtightness testing and electrical component testing. The electric actuator must have good sealing properties to ensure the electrical performance of the electronic components housed within the casing. Therefore, personnel must perform airtightness testing on the electric actuator, and only after passing the airtightness test can subsequent packaging and warehousing proceed.

[0005] In existing technologies, the airtightness of electric actuators is typically tested by immersing them in water and visually inspecting for air bubbles. If the airtightness of the electric actuator is poor, water will enter the inner cavity of the casing, damaging the electrical components inside and resulting in higher costs.

[0006] In summary, there is currently a lack of an airtightness testing device that can effectively test electric actuators. Summary of the Invention

[0007] This invention proposes an airtightness testing device to solve the problem of the current lack of an effective airtightness testing device for testing electric actuators.

[0008] This utility model discloses an airtightness testing device, which includes a frame, a press, a lower sealing block, a drive module, a control component, and a leak detection component. The press is vertically mounted on the top of the frame. The press is equipped with a liftable pressure plate, and an upper sealing block is detachably installed in the pull-out groove at the lower end of the pressure plate. The upper sealing block has an upper sealing groove on its lower end face; the upper sealing block has an air pipe connector on its outer side wall that communicates with the upper sealing groove; the upper end of the upper sealing groove has an annular groove to avoid the crank at the upper end of the electric actuator. The lower sealing block is positioned below the upper sealing block and is mounted on the top of the frame via the drive module; the lower end of the lower sealing block is detachably connected to the slider on the drive module; the slide rail on the drive module extends along a first horizontal direction, with one end positioned directly below the upper sealing block and the other end extending outside the press. The control component is mounted on the frame and is adapted to drive the upper sealing block and the lower sealing block to abut and close through the pressure plate, so that the upper sealing groove and the lower sealing groove at the top of the lower sealing block enclose a closed test chamber; the inner sidewall of the upper sealing groove is adapted to be spaced apart from the electric actuator placed in the test chamber when the upper sealing groove and the lower sealing groove enclose the test chamber, so as to allow gas to flow. The leak detection component is mounted on the frame and connected to the gas pipe connector via a gas pipeline. The control component is also adapted to control the leak detection component to perform an airtightness test on the electric actuator placed in the test chamber. The airtightness test of the electric actuator is achieved through the cooperation of the compressor, lower sealing block, upper sealing block, and leak detection component. The operation is simple and effectively protects the internal electrical components of the electric actuator.

[0009] Optionally, the top of the lower sealing block is provided with a positioning support ring; the positioning support ring is arranged around the outer periphery of the lower sealing groove, and the top surface of the positioning support ring is adapted to support the upper edge protrusion of the lower housing in the electric actuator. The positioning support ring has a clamping notch, which is adapted to expose a portion of the upper edge protrusion of the lower housing outside the lower sealing block. This design allows workers to retrieve the electric actuator placed within the lower sealing groove.

[0010] Optionally, the upper end of the lower sealing groove is provided with a horizontal groove for accommodating a horizontal connector, and the lower end of the upper sealing groove is provided with a vertical groove for accommodating a vertical connector. The horizontal groove and the vertical groove are adapted to connect the upper sealing groove and the lower sealing groove when the upper sealing block and the lower sealing block are in contact and closed. This design allows the device to test both electric actuators with horizontal connectors and electric actuators with vertical connectors.

[0011] Optionally, the drive module includes a slider, a slide rail, a drive cylinder, and a photoelectric sensor; The slide rail is mounted on the top of the frame via a connecting plate; the slide rail includes a detection end and a feeding end arranged opposite each other, the detection end is located directly below the upper sealing block, and the feeding end is located outside the press; The slider is positioned above the slide rail and is slidably connected to the slide rail; the top of the slider is detachably connected to the lower sealing block via a mounting plate. The fixed end of the driving cylinder is connected to the connecting plate, and the driving end of the driving cylinder is connected to the mounting plate; the driving cylinder is adapted to drive the mounting plate to move along a first horizontal direction. The photoelectric sensor is disposed on the top of the connecting plate and is located outside the press; the photoelectric sensor is adapted to detect whether there is an electric actuator in the lower sealing groove when the mounting plate is placed at the feeding end.

[0012] Optionally, there are two slide rails, which are arranged in parallel at intervals on the top of the connecting plate; The top of the connecting plate is also provided with a fixed support block; the fixed support block is placed between the two slide rails and is located at the detection end of the slide rail; The mounting plate has a movable support block at its bottom, positioned between the two slide rails. The movable support block is adapted to be spaced apart from the connecting plate when the mounting plate is positioned at the feeding end. Furthermore, the movable support block is adapted to be positioned on top of the fixed support block and abut against it when the mounting plate is positioned at the detection end. With this design, when the mounting plate is positioned at the detection end, the fixed support block provides support for the mounting plate, thus protecting it.

[0013] Optionally, the connecting plate extends along the first horizontal direction, and its two ends are respectively provided with abutment components; The abutment assembly includes an adjusting bolt and a first buffer; The adjusting bolt is threadedly connected to the connecting plate; the adjusting bolt is arranged along the first horizontal direction, and its threaded end face is adapted to abut against the mounting plate; The fixed end of the first buffer is connected to the connecting plate; the first buffer is arranged along the first horizontal direction, and its movable end is adapted to abut against the mounting plate. This design allows the mounting plate to be placed smoothly.

[0014] Optionally, the lower sealing block is connected to the slider via a mounting plate; The lower sealing block is placed on top of the mounting plate; the lower end of the lower sealing block is provided with lower protrusions on both sides, and each lower protrusion is provided with a positioning pin between it and the connecting plate; The mounting plate has a rotatable lever at its top. The lever's rotation axis is vertically oriented, and its radial extension is adapted to be positioned directly above the lower protruding edge to limit its vertical movement. This design enables quick assembly and disassembly between the mounting plate and the lower sealing block.

[0015] Optionally, the upper sealing block has upper protruding edges on both sides of its upper end, and the upper protruding edges are adapted to be detachably connected to the pull-out groove; A knob plunger is provided between the upper protruding edge and the pressure plate; The bottom of the pressure plate is also equipped with a proximity switch; the proximity switch is located at one end of the pull-out groove and is used to detect whether the upper sealing block installed on the pull-out groove is properly installed. This design enables quick assembly and disassembly between the upper sealing block and the pressure plate.

[0016] Optionally, the press includes a frame, the pressure plate, a hydraulic cylinder, and a second buffer; The bottom plate of the frame is connected to the top of the machine frame; The hydraulic cylinder is positioned above the pressure plate; the upper end of the hydraulic cylinder is a fixed end, located at the upper end of the frame; the lower end of the hydraulic cylinder is a driving end, the lower end surface of the driving end of the hydraulic cylinder is spherical, and the driving end of the hydraulic cylinder is connected to the pressure plate through a floating block. The second buffer is vertically disposed between the bottom plate of the frame and the pressure plate; One end of the drive module is placed on top of the base plate of the frame.

[0017] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art: By cooperating with the press, lower sealing block, upper sealing block and leakage detection component, the airtightness of the electric actuator can be tested. The operation is simple and effectively protects the internal electrical components of the electric actuator. The quick-release mechanism between the mounting plate and the lower sealing block, and the quick-release mechanism between the upper sealing block and the pressure plate, allows operators to replace different lower and upper sealing blocks, thereby adapting to different models of electric actuators. By setting horizontal and vertical slots, the device can test both electric actuators with horizontal connectors and electric actuators with vertical connectors, thus improving the device's adaptability. By incorporating abutment components, the mounting plate can be placed smoothly.

[0018] The above description of the disclosed content and the following description of the embodiments are intended to demonstrate and explain the spirit and principle of the present invention, and to provide a further explanation of the scope of the patent application of the present invention. Attached Figure Description

[0019] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the airtightness testing device in this utility model; Figure 2 This is a schematic diagram showing the disassembly and assembly of the upper sealing block and the pressure plate in this utility model; Figure 3 This is a schematic diagram of the lower sealing block placed at the feeding end of the slide rail in this utility model; Figure 4 This is a schematic diagram of the lower sealing block placed at the slide rail detection end in this utility model; Figure 5 This is a schematic diagram (a) of the upper sealing block and the lower sealing block in this utility model; Figure 6 This is a schematic diagram (II) of the upper sealing block and the lower sealing block in this utility model.

[0021] Explanation of icon numbers: 1. Rack; 2. Press; 21. Frame; 22. Pressure plate; 221. Pull-out groove; 23. Hydraulic cylinder; 24. Second buffer; 25. Knob plunger; 26. Proximity switch; 27. Pad plate; 3. Lower sealing block; 31. Lower sealing groove; 311. Horizontal groove; 32. Positioning support ring; 321. Clamping notch; 33. Lower raised edge; 34. Mounting groove; 35. Groove; 36. Weight reduction groove; 4. Drive module; 41. Slider; 42. Slide rail; 43. Drive cylinder; 44. Photoelectric sensor; 45. Connecting plate; 451. Fixed support block; 46. Mounting plate; 461. Movable support block; 462. Lever; 47. Positioning pin; 48. Adjusting bolt; 49. First buffer; 5. Upper sealing block; 51. Upper sealing groove; 511. Annular groove; 512. Vertical groove; 52. Air pipe connector; 53. Upper raised edge; 531. Waist-shaped hole; 54. Handle; 55. Mating block; 6. Electric actuator; 61. Lower housing; 62. Upper housing; 63. Crank; 64a. Horizontal connector; 64b. Vertical connector. Detailed Implementation

[0022] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0023] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0024] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0025] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "provided with," "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0026] This application provides an airtightness testing device for testing the airtightness of an electric actuator 6.

[0027] In this embodiment, please refer to Figures 5-6As shown, the outer casing of the electric actuator 6 is formed by fastening together an upper casing 62 and a lower casing 61. The lower casing 61 has an upper edge protrusion on its upper outer periphery, and the upper casing 62 has a lower edge protrusion on its lower outer periphery that abuts against the top surface of the upper edge protrusion. When the upper and lower edge protrusions are abutting against each other, they form the edge protrusions of the electric actuator 6. The electric actuator 6 is provided with a connector located at the upper end of the lower casing 61. The electric actuator 6 also has a crank 63, one end of which extends into the upper casing 62, and the other end of which is located outside the upper casing 62.

[0028] Please see Figure 1 As shown, the airtightness testing device includes a frame 1, a compressor 2, a lower sealing block 3, a drive module 4, an upper sealing block 5, a control component, and a leak detection component.

[0029] The press 2 is vertically mounted on top of the frame 1. The press 2 is equipped with a liftable pressure plate 22. The lower end of the pressure plate 22 has a pull-out groove 221 (e.g., ...). Figure 2 (As shown). An upper sealing block 5 is detachably installed inside the pull-out groove 221. An upper sealing groove 51 is formed on the lower end face of the upper sealing block 5 (as shown). Figure 2 As shown, an upper housing 62 is used to accommodate the electric actuator 6. An air pipe connector 52 is provided on the outer wall of the upper sealing block 5, and the air pipe connector 52 is connected to the upper sealing groove 51. The press 2 is adapted to indirectly drive the upper sealing block 5 to rise and fall via a pressure plate 22.

[0030] The lower sealing block 3 is positioned below the upper sealing block 5 and is mounted on top of the frame 1 via the drive module 4. The lower sealing block 3 is positioned above the drive module 4, and its lower end is detachably connected to the slider 41 on the drive module 4. A slide rail 42 on the drive module 4 is positioned between the slider 41 and the top of the frame 1. The slide rail 42 extends along a first horizontal direction, with one end positioned directly below the upper sealing block 5 and the other end extending outside the press 2. The drive module 4 is adapted to drive the lower sealing block 3 to move along the first horizontal direction, so that the lower sealing block 3 is positioned directly below the upper sealing block 5 or outside the press 2. A lower sealing groove 31 (e.g., ...) is provided on the top of the lower sealing block 3. Figure 5 As shown, the lower housing 61 is used to house the electric actuator 6.

[0031] The leak detection unit is mounted on frame 1 (not shown in the figure). The leak detection unit is connected to gas pipe connector 52 via a gas line.

[0032] The control component is mounted on the frame 1 (not shown in the figure). The control component is electrically connected to the press 2, the drive module 4, and the leak detector component. When the lower sealing block 3 is positioned directly below the upper sealing block 5, the control component is adapted to drive the upper sealing block 5 downwards via the pressure plate 22, causing the upper sealing block 5 to abut and close with the lower sealing block 3, thereby enclosing the upper sealing groove 51 and the lower sealing groove 31 to form a closed test chamber. When the upper sealing block 5 and the lower sealing block 3 are closed, the control component is also adapted to control the leak detector component to perform an airtightness test on the electric actuator 6 placed within the test chamber.

[0033] In this embodiment, the control components include a controller, a control panel, and indicator lights. The controller, control panel, and indicator lights are all mounted on rack 1. The control panel is connected to the controller. Since the controller and control panel are existing technologies, they will not be described in detail.

[0034] In this embodiment, the leak detection component includes a leak detector and a gas pipeline. The leak detector is mounted on the frame 1 and connected to the upper sealing groove 51 via the gas pipeline. The leak detector is also connected to the control component. Using a leak detector to test airtightness is existing technology and will not be described in detail.

[0035] For further details, please refer to Figure 2 and Figure 6 As shown, the upper end of the upper sealing groove 51 is provided with an annular groove 511 to avoid the crank 63 at the upper end of the electric actuator 6. When the upper sealing groove 51 and the lower sealing groove 31 enclose and form a test chamber, the inner sidewall of the upper sealing groove 51 is adapted to be spaced apart from the electric actuator 6 placed in the test chamber to allow gas to flow.

[0036] Please see Figure 1 As shown, the press 2 includes a frame 21, a pressure plate 22, a hydraulic cylinder 23, and a second buffer 24. The hydraulic cylinder 23 is connected to the control assembly.

[0037] Frame 21 includes a top plate, columns, and a bottom plate arranged sequentially from top to bottom. The bottom plate of frame 21 is connected to the top of frame 1. Four columns are located at the four corners of the bottom plate. A pressure plate 22 is placed between the top and bottom plates, and its four corners are slidably connected to the columns via corresponding guide sleeves. A hydraulic cylinder 23 is positioned above the top plate. The upper end of the hydraulic cylinder 23 is a fixed end, mounted on the top plate. The lower end of the hydraulic cylinder 23 is a driving end, passing through the top plate and connected to the pressure plate 22. A second buffer 24 is vertically arranged between the bottom plate and the pressure plate 22 of frame 21, with both ends connected to the bottom plate and the pressure plate 22 respectively, to provide cushioning.

[0038] In this embodiment, the lower end face of the driving end of the hydraulic cylinder 23 is spherical, and the driving end of the hydraulic cylinder 23 is connected to the pressure plate 22 through a floating block. The piston rod of the hydraulic cylinder 23 (i.e., the driving end of the hydraulic cylinder 23) has a spherical end face, and the piston rod drives external components to rise and fall through the floating block to protect the hydraulic cylinder 23, which is the prior art.

[0039] The existing patent with publication number CN207547601U describes a floating clamping structure for a vacuum casting chamber forming cylinder, and details the spherical top column fixed at the end of the piston rod.

[0040] Please see Figure 2 As shown, the upper sealing block 5 has upper protruding edges 53 on both sides of its upper end. The upper protruding edges 53 are adapted to be detachably connected to the pull-out groove 221. In this embodiment, the pull-out groove 221 extends along a first horizontal direction. The upper protruding edges 53 extend along a first horizontal direction. A knob plunger 25 is provided between the upper protruding edges 53 and the pressure plate 22.

[0041] In this embodiment, a proximity switch 26 is also provided at the bottom of the pressure plate 22. The proximity switch 26 is connected to the control component. The proximity switch 26 is located at one end of the pull-out slot 221 and is used to detect whether the upper sealing block 5 installed on the pull-out slot 221 is installed in place. The upper sealing block 5 extends along the first horizontal direction, and one end of it is provided with a handle 54 for easy gripping by the operator, and the other end of it is provided with a mating block 55 that cooperates with the proximity switch 26.

[0042] In this embodiment, when the upper sealing block 5 installed on the pull-out slot 221 is not properly installed, i.e., the mating block 55 does not trigger the proximity switch 26, the control component controls the warning indicator light on the frame 1 to illuminate. When the upper sealing block 5 installed on the pull-out slot 221 is properly installed, i.e., the mating block 55 triggers the proximity switch 26, the control component controls the warning indicator light on the frame 1 to extinguish. Workers can use the warning indicator light to determine whether the upper sealing block 5 is properly installed, thus improving safety performance.

[0043] In this embodiment, a pad 27 is provided between the top of the upper sealing block 5 and the bottom of the pressure plate 22. The pad 27 is placed in the pull-out groove 221 and is connected to the pressure plate 22 by bolts. The end of the knob plunger 25 is adapted to be inserted sequentially into the through hole on the pressure plate 22 and the waist-shaped hole 531 of the upper protrusion 53. When replacing different upper sealing blocks 5, the pads 27 of different thicknesses can be replaced to ensure that the upper sealing block 5 is effectively installed on the pull-out groove 221.

[0044] Please see Figure 1 , Figure 3 and Figure 4As shown, the drive module 4 includes a slider 41, a slide rail 42, a drive cylinder 43, and a photoelectric sensor 44. The drive cylinder 43 and the photoelectric sensor 44 are respectively connected to the control component.

[0045] The slide rail 42 is mounted on top of the frame 1 via a connecting plate 45. Both the slide rail 42 and the connecting plate 45 extend along a first horizontal direction. The end of the connecting plate 45 near the press 2 is positioned on top of the base plate of the frame 21, and the end of the connecting plate 45 away from the press 2 is connected to the frame 1. The slide rail 42 includes a detection end and a feeding end arranged opposite to each other. The detection end is positioned directly below the upper sealing block 5, and the feeding end is positioned outside the press 2. The slider 41 is positioned above the slide rail 42 and is slidably connected to the slide rail 42. The top of the slider 41 is detachably connected to the lower sealing block 3 via a mounting plate 46. The drive cylinder 43 is positioned on top of the connecting plate 45. The fixed end of the drive cylinder 43 is connected to the connecting plate 45, and the drive end of the drive cylinder 43 is connected to the mounting plate 46. The drive cylinder 43 is adapted to drive the mounting plate 46 to move along the first horizontal direction. The photoelectric sensor 44 is positioned on top of the connecting plate 45 and is positioned outside the press 2. The photoelectric sensor 44 is adapted to detect whether there is an electric actuator 6 in the lower sealing groove 31 when the mounting plate 46 is placed at the feeding end.

[0046] Furthermore, there are two slide rails 42, arranged parallel to each other at the top of the connecting plate 45. A fixed support block 451 is also provided on the top of the connecting plate 45. The fixed support block 451 is positioned between the two slide rails 42 and at the detection end of the slide rails 42. A movable support block 461 is provided at the bottom of the mounting plate 46. The movable support block 461 is positioned between the two slide rails 42. When the mounting plate 46 is positioned at the feeding end, please refer to... Figure 3 As shown, the movable support block 461 is adapted to be spaced apart from the connecting plate 45. When the mounting plate 46 is placed at the detection end, the movable support block 461 is also adapted to be placed on top of the fixed support block 451 and abut against the fixed support block 451. When the mounting plate 46 is placed at the detection end, please refer to... Figure 4 As shown, the fixed support block 451 can provide support for the mounting plate 46 to protect the mounting plate 46.

[0047] Furthermore, the connecting plate 45 extends along a first horizontal direction, with abutment components at both ends to allow the mounting plate 46 to be placed smoothly. The abutment components include an adjusting bolt 48 and a first buffer 49, which are spaced apart and parallel to each other. The adjusting bolt 48 is threadedly connected to the connecting plate 45 via a connecting block. The adjusting bolt 48 is positioned along the first horizontal direction, and its threaded end face is adapted to abut against the side wall of the movable support block 461. The fixed end of the first buffer 49 is connected to the connecting plate 45 via a connecting block. The first buffer 49 is positioned along the first horizontal direction, and its movable end is adapted to abut against the side wall of the movable support block 461.

[0048] Please see Figure 4As shown, the lower sealing block 3 is positioned on top of the mounting plate 46. The lower sealing block 3 has lower protrusions 33 on both sides of its lower end, extending along a first horizontal direction. A positioning pin 47 is provided between each lower protrusion 33 and the connecting plate 45. A rotatable lever 462 is provided on the top of the mounting plate 46. The rotation axis of the lever 462 is vertically oriented, and the radial extension of the lever 462 is adapted to be positioned directly above the lower protrusion 33 to limit the lower protrusion 33 in the vertical direction.

[0049] In this embodiment, there are two levers 462, distributed diagonally on the mounting plate 46. The radial extension of the lever 462 limits the lower protrusion 33 in the vertical direction, and the rotation axis of the lever 462 limits the lower protrusion 33 in the first horizontal direction.

[0050] Furthermore, a positioning support ring 32 is provided on the top of the lower sealing block 3. The positioning support ring 32 is arranged around the outer periphery of the lower sealing groove 31. The top surface of the positioning support ring 32 is adapted to support the upper edge protrusion of the lower housing 61. The inner ring of the positioning support ring 32 is adapted to abut against the outer peripheral wall of the lower housing 61. A clamping notch 321 is provided on the positioning support ring 32. The clamping notch 321 is adapted to expose a portion of the upper edge protrusion of the lower housing 61 outside the lower sealing block 3, so that the operator can retrieve the electric actuator 6 placed in the lower sealing groove 31. In addition, when the lower sealing block 3 and the upper sealing block 5 are closed by abutting, the upper sealing groove 51 and the lower sealing groove 31 can be connected through the gap between the electric actuator 6 and the clamping notch 321.

[0051] Furthermore, the top of the lower sealing block 3 is provided with a mounting groove 34, which is arranged around the positioning support ring 32. A sealing ring (not shown in the figure) is embedded in the mounting groove 34 to ensure that the test chamber is effectively sealed.

[0052] Furthermore, grooves for easy gripping by workers are provided on the outer side walls of both sides of the lower sealing block 3. A weight-reducing groove 36 is provided at the bottom of the lower sealing block 3. The weight-reducing groove 36 is not connected to the lower sealing groove 31.

[0053] In this embodiment, the electric actuator 6 is provided with a connector for connecting to the cable interface of an external component. Due to limitations in the distribution of the external component's interfaces, the distribution of the connector on the electric actuator 6 includes, but is not limited to, the following two forms. The first form is that the connector on the electric actuator 6 is vertically arranged, that is, the electric actuator 6 is provided with a vertical connector 64b (e.g., Figure 6 (As shown). The second form is that the connector on the electric actuator 6 is horizontally arranged, that is, the electric actuator 6 is provided with a horizontal connector 64a (as shown). Figure 5 (As shown).

[0054] Furthermore, to improve the adaptability of the device, a horizontal groove 311 is provided at the upper end of the lower sealing groove 31 to accommodate the horizontal connector 64a. A vertical groove 512 is provided at the lower end of the upper sealing groove 51 to accommodate the vertical connector 64b. The horizontal groove 311 and the vertical groove 512 are adapted to connect the upper sealing groove 51 and the lower sealing groove 31 when the upper sealing block 5 and the lower sealing block 3 are closed in contact. By providing the horizontal groove 311 and the vertical groove 512, the device can detect both electric actuators 6 with horizontal connectors 64a and electric actuators 6 with vertical connectors 64b.

[0055] In this embodiment, the working principle of the airtightness detection device is as follows: Before the airtightness testing device is put into operation, the lower sealing block 3 is placed at the feeding end of the slide rail 42.

[0056] The operator places the electric actuator 6 into the lower sealing groove 31 of the lower sealing block 3. At this time, the upper housing 62 of the electric actuator 6 is exposed outside the lower sealing block 3. The photoelectric sensor 44 can determine whether the electric actuator 6 is placed in the lower sealing groove 31 of the lower sealing block 3 by detecting whether the upper housing 62 is above the lower sealing block 3.

[0057] After the electric actuator 6 is placed on the lower sealing block 3, the operator starts the device through the control panel. The control component controls the drive cylinder 43 to move, so that the mounting plate 46 drives the lower sealing block 3 to the detection end of the slide rail 42.

[0058] When the operator starts the device via the control panel, if the photoelectric sensor 44 detects that an electric actuator 6 is placed in the lower sealing groove 31 of the lower sealing block 3, the control component will drive the drive cylinder 43 to move normally according to the detection result. If the photoelectric sensor 44 detects that no electric actuator 6 is placed in the lower sealing groove 31 of the lower sealing block 3, the control component will control the buzzer to sound an alarm according to the detection result, and the drive cylinder 43 will not move, to indicate to the operator that there is no electric actuator 6 on the lower sealing block 3. During this period, the photoelectric sensor 44 is set to prevent the unloaded lower sealing block 3 from moving to the detection end of the slide rail 42, thereby avoiding the device from doing useless work.

[0059] After the lower sealing block 3 moves to the detection end of the slide rail 42, the control component controls the hydraulic cylinder 23 to drive the upper sealing block 5 to press down, so that the upper sealing block 5 and the lower sealing block 3 abut and close, and the upper sealing groove 51 and the lower sealing groove 31 enclose and form a closed test chamber. At this time, the electric actuator 6 is placed inside the test chamber.

[0060] After the upper sealing block 5 and the lower sealing block 3 abut and close, the control component, through the leak detection component, controls the gas pipeline to inject a fixed amount of gas (i.e., air) into the test chamber. Subsequently, the leak detection component detects the air pressure inside the test chamber and sends the detection result to the control component. The control component compares the detection result with the airtightness threshold. If the detected air pressure in the test chamber is greater than or equal to the airtightness threshold, the electric actuator 6 is considered airtight and is a good product. If the detected air pressure in the test chamber is less than the airtightness threshold, the electric actuator 6 is considered airtight and is a defective product. When the electric actuator 6 is good, the control component controls the indicator light on the frame 1 to illuminate green; when the electric actuator 6 is defective, the control component controls the indicator light on the frame 1 to illuminate red. Operators can determine whether the electric actuator 6 is airtight or not based on the color of the indicator light.

[0061] After the leak detector component completes its detection, the control component first controls the hydraulic cylinder 23 to drive the upper sealing block 5 to rise and reset, and then controls the drive cylinder 43 to drive the lower sealing block 3 to reset to the loading end of the slide rail 42. Afterwards, the operator removes the electric actuator 6 from inside the lower sealing block 3.

[0062] This application utilizes the cooperation between a press, a lower sealing block, an upper sealing block, and a leak detector assembly to achieve airtightness testing of electric actuators. The operation is simple and effectively protects the internal electrical components of the electric actuator. Quick-release mechanisms between the mounting plate and the lower sealing block, and between the upper sealing block and the pressure plate, allow operators to easily replace different lower and upper sealing blocks, thus adapting to different models of electric actuators. The inclusion of horizontal and vertical slots allows the device to test both electric actuators with horizontal and vertical connectors, improving its adaptability. The abutment assembly ensures stable placement of the mounting plate.

[0063] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. An airtightness testing device, characterized in that, Includes frame (1), press (2), lower sealing block (3), drive module (4), control components and leak detection components; The press (2) is vertically installed on the top of the frame (1). The press (2) is equipped with a liftable pressure plate (22). An upper sealing block (5) is detachably installed in the pull-out groove (221) at the lower end of the pressure plate (22). The upper sealing block (5) has an upper sealing groove (51) on its lower end surface; the upper sealing block (5) has an air pipe connector (52) on its outer side wall that communicates with the upper sealing groove (51); the upper end of the upper sealing groove (51) has an annular groove (511) to avoid the crank (63) located at the upper end of the electric actuator (6). The lower sealing block (3) is positioned below the upper sealing block (5) and is mounted on the top of the frame (1) via the drive module (4); the lower end of the lower sealing block (3) is detachably connected to the slider (41) on the drive module (4); the slide rail (42) on the drive module (4) extends along the first horizontal direction, with one end positioned directly below the upper sealing block (5) and the other end extending outside the press (2); The control component is mounted on the frame (1) and is adapted to drive the upper sealing block (5) and the lower sealing block (3) to abut and close through the pressure plate (22), so that the upper sealing groove (51) and the lower sealing groove (31) at the top of the lower sealing block (3) enclose a closed test chamber; the inner sidewall of the upper sealing groove (51) is adapted to be spaced apart from the electric actuator (6) placed in the test chamber when the upper sealing groove (51) and the lower sealing groove (31) enclose the test chamber, so as to allow gas to flow; The leak detection component is mounted on the frame (1) and connected to the gas pipe connector (52) via a gas pipeline; the control component is also adapted to control the leak detection component to perform an airtightness test on the electric actuator (6) placed in the test chamber.

2. The airtightness testing device according to claim 1, characterized in that, The top of the lower sealing block (3) is provided with a positioning support ring (32); the positioning support ring (32) is arranged around the outer periphery of the lower sealing groove (31), and the top surface of the positioning support ring (32) is suitable for supporting the upper edge protrusion of the lower housing (61) in the electric actuator (6); The positioning support ring (32) has a clamping notch (321) which is adapted to expose a portion of the upper edge protrusion of the lower housing (61) to the outside of the lower sealing block (3).

3. The airtightness testing device according to claim 1, characterized in that, The upper end of the lower sealing groove (31) is provided with a horizontal groove (311) for accommodating the horizontal plug (64a), and the lower end of the upper sealing groove (51) is provided with a vertical groove (512) for accommodating the vertical plug (64b). The horizontal groove (311) and the vertical groove (512) are adapted to connect the upper sealing groove (51) and the lower sealing groove (31) when the upper sealing block (5) and the lower sealing block (3) are in contact and closed.

4. The airtightness testing device according to claim 1, characterized in that, The drive module (4) includes a slider (41), a slide rail (42), a drive cylinder (43), and a photoelectric sensor (44). The slide rail (42) is mounted on the top of the frame (1) via a connecting plate (45); the slide rail (42) includes a detection end and a feeding end arranged opposite to each other, the detection end is located directly below the upper sealing block (5), and the feeding end is located outside the press (2); The slider (41) is positioned above the slide rail (42) and is slidably connected to the slide rail (42); the top of the slider (41) is detachably connected to the lower sealing block (3) via a mounting plate (46); The fixed end of the driving cylinder (43) is connected to the connecting plate (45), and the driving end of the driving cylinder (43) is connected to the mounting plate (46); the driving cylinder (43) is adapted to drive the mounting plate (46) to move along the first horizontal direction. The photoelectric sensor (44) is located on the top of the connecting plate (45) and outside the press (2); the photoelectric sensor (44) is adapted to detect whether there is an electric actuator (6) in the lower sealing groove (31) when the mounting plate (46) is placed at the feeding end.

5. The airtightness testing device according to claim 4, characterized in that, There are two slide rails (42), which are arranged in parallel at intervals on the top of the connecting plate (45); The top of the connecting plate (45) is also provided with a fixed support block (451); the fixed support block (451) is placed between the two slide rails (42) and is located at the detection end of the slide rail (42); The bottom of the mounting plate (46) is provided with a movable support block (461), which is placed between the two slide rails (42). The movable support block (461) is adapted to be spaced apart from the connecting plate (45) when the mounting plate (46) is placed at the feeding end. The movable support block (461) is also adapted to be placed on top of the fixed support block (451) and abut against the fixed support block (451) when the mounting plate (46) is placed at the detection end.

6. The airtightness testing device according to claim 4, characterized in that, The connecting plate (45) extends along the first horizontal direction, and its two ends are respectively provided with abutment components; The abutment assembly includes an adjusting bolt (48) and a first buffer (49). The adjusting bolt (48) is threadedly connected to the connecting plate (45); the adjusting bolt (48) is arranged along the first horizontal direction, and its threaded end face is adapted to abut against the mounting plate (46); The fixed end of the first buffer (49) is connected to the connecting plate (45); the first buffer (49) is arranged along the first horizontal direction, and its movable end is adapted to abut against the mounting plate (46).

7. The airtightness testing device according to claim 4, characterized in that, The lower sealing block (3) is connected to the slider (41) via a mounting plate (46); The lower sealing block (3) is placed on the top of the mounting plate (46); the lower sealing block (3) has a lower protrusion (33) on both sides of its lower end, and a positioning pin (47) is provided between each lower protrusion (33) and the connecting plate (45). The top of the mounting plate (46) is provided with a rotatable lever (462), the rotation axis of the lever (462) is vertically arranged, and the radial extension of the lever (462) is adapted to be placed directly above the lower convex edge (33) to limit the lower convex edge (33) in the vertical direction.

8. The airtightness testing device according to claim 1, characterized in that, The upper sealing block (5) has upper protrusions (53) on both sides of its upper end, and the upper protrusions (53) are adapted to be detachably connected to the pull-out groove (221); A knob plunger (25) is provided between the upper protruding edge (53) and the pressure plate (22). The bottom of the pressure plate (22) is also provided with a proximity switch (26); the proximity switch (26) is located at one end of the pull-out groove (221) and is used to detect whether the upper sealing block (5) installed on the pull-out groove (221) is installed in place.

9. The airtightness testing device according to claim 1, characterized in that, The press (2) includes a frame (21), the pressure plate (22), a hydraulic cylinder (23), and a second buffer (24); The bottom plate of the frame (21) is connected to the top of the frame (1); The hydraulic cylinder (23) is positioned above the pressure plate (22); the upper end of the hydraulic cylinder (23) is a fixed end, which is located at the upper end of the frame (1); the lower end of the hydraulic cylinder (23) is a driving end, and the lower end surface of the driving end of the hydraulic cylinder (23) is a spherical surface. The driving end of the hydraulic cylinder (23) is connected to the pressure plate (22) through a floating block. The second buffer (24) is vertically disposed between the bottom plate of the frame (21) and the pressure plate (22); One end of the drive module (4) is placed on top of the bottom plate of the frame (21).

Images