Vehicle-mounted lens airtightness detection machine

Abstract

This invention belongs to the field of automotive lens airtightness testing technology and discloses an automotive lens airtightness testing machine, including an airtightness testing machine control body, a testing machine on one side of the control body, a lower adjustment mold fixedly mounted on the testing machine, a lower pressure plate slidably connected to the testing machine, and an electric cylinder fixedly mounted on the testing machine, with the bottom of the electric cylinder fixedly mounted to the top of the lower pressure plate. This invention, through the synergistic innovation of the adjustment component, the elastic combination component, and the dynamic sealing compensation structure, achieves airtightness testing for lenses of different specifications without the need for mold changes. The adjustment sleeve can achieve precise expansion / contraction deformation under the drive of the push plate and the clamping plate. Combined with the straight elastic block and the round extrusion block driven by the clamping spring, it applies pressure evenly to the sealing strip at multiple points, accurately covering lenses with different shapes and contours. This eliminates the need for multiple sets of dedicated molds for different specifications, overcoming the limitation of existing technologies where fixed molds can only adapt to a single specification of automotive lens.

Description

Technical Field

[0001] This invention belongs to the field of automotive lens air tightness testing technology, specifically an automotive lens air tightness testing machine. Background Technology

[0002] Currently, as a core component of automotive safety driving assistance systems (reversing camera, 360° surround view), automotive lenses operate in complex and variable environments, and may face severe challenges such as rain, dust, and temperature changes. Therefore, their sealing performance (air tightness) is a key indicator to ensure that the internal precision optical components are not damaged, maintain stable image quality, and extend service life. Strict air tightness testing of automotive lenses is a necessary production step to ensure the safety and reliability of the entire vehicle.

[0003] Current airtightness testing machines for automotive lenses typically use a fixed upper and lower mold to form a sealed testing chamber, which is then filled with gas at a certain pressure. A high-precision pressure sensor monitors the pressure drop within the chamber to determine if the lens's airtightness is acceptable. This dedicated design, requiring one mold per machine, leads to low testing efficiency. Switching between different lens models necessitates stopping the machine and manually replacing the entire mold set, a cumbersome process that severely disrupts production. Furthermore, while some airtightness testing machines can test multiple lens specifications, this is achieved simply by adding different fixed molds. This approach is essentially a simple superposition and integration of multiple fixed molds, failing to address the fundamental issue of a single airtightness testing machine's inability to adapt to different lens specifications. Consequently, automotive lenses of a specific shape and size require custom-designed testing cavities. This means that when the production line needs to switch between different lens models for testing, operators must stop the machine and manually replace the matching upper and lower molds. This process is not only time-consuming and labor-intensive but also severely restricts testing efficiency, making rapid switching between different product models on the production line difficult. Summary of the Invention

[0004] To address the problems mentioned in the background art, the present invention provides an airtightness testing machine for automotive lenses, comprising an airtightness testing machine control body, a testing machine on one side of the control body, a lower adjustment mold fixedly mounted on the testing machine, a lower pressure plate slidably connected to the testing machine, an electric cylinder fixedly mounted on the testing machine, the bottom of the electric cylinder fixedly mounted to the top of the lower pressure plate, an upper moving mold fixedly mounted on the bottom of the lower pressure plate, a placement box embedded in the lower adjustment mold, a lens disposed in the placement box, and a sealing plate fixedly mounted on the bottom of the lower adjustment mold, and further comprising: An adjustment component is provided on the placement box and is used to cover and seal different lenses placed in the placement box so that lenses of different specifications can be placed in it for airtightness testing. The adjustment component includes an adjustment sleeve, which is connected to the placement box, and a retaining plate is slidably connected inside the adjustment sleeve. The elastic combination assembly is slidably connected to the abutment plate and is used to combine and adapt to different lens specifications to provide elastic abutment, thereby reducing the gap between the adjustment sleeve and lenses of different specifications. An elastic sealing assembly is provided on the lower adjusting mold and the upper moving mold to reduce the gap at the contact point between the lower adjusting mold and the upper moving mold and prevent air leakage. A bidirectional drive assembly is disposed at the bottom of the lower adjustment mold and is used to drive the moving plate and the elastic combination assembly so that they can be adjusted according to the movement requirements.

[0005] Preferably, the adjusting assembly further includes a push plate, which is slidably connected to the abutment plate and connected to the four corners of the inner wall of the adjusting sleeve. The push plate is used to apply pressure to the four corners of the adjusting sleeve so that the four corners of the adjusting sleeve move synchronously to achieve sealing. A movable plate is vertically connected to the four push plates.

[0006] Preferably, the elastic assembly includes a sliding rod slidably connected inside the abutment plate. A limiting plate is connected to the surface of the sliding rod, and an abutment spring is sleeved on the surface of the sliding rod. One side of the abutment spring contacts the abutment plate, and the other side of the abutment spring is connected to the limiting plate. The outer side of the sliding rod extends through to the outer side of the placement box and into the interior of the lower adjusting mold. The sliding rod applies pressure to the adjusting sleeve through an elastic extrusion member to reduce the gap.

[0007] Preferably, the elastic extrusion member includes a sealing strip connected to the adjusting sleeve to fill the gap between the lens and the adjusting sleeve, a straight elastic block connected to the sliding rod, and a round extrusion block connected to the sliding rod.

[0008] Preferably, the elastic sealing assembly includes a sealing base plate, the top of which contacts the bottom of the adjusting sleeve, and a compression sealing gasket is fixedly installed on the bottom of the upper moving mold, the bottom of which contacts the top of the adjusting sleeve.

[0009] Preferably, the top of the adjusting sleeve and the bottom of the compression sealing gasket are both symmetrical straight teeth. When the top of the adjusting sleeve and the bottom of the compression sealing gasket are in compression contact, compression sealing is achieved through the symmetrical straight teeth grooves. The bottom of the adjusting sleeve and the top of the sealing base plate are both symmetrical oblique teeth. When the bottom of the adjusting sleeve and the top of the sealing base plate are in contact, the oblique teeth groove at the bottom of the adjusting sleeve and the oblique teeth groove at the top of the sealing base plate are relatively compressed and engaged, achieving an adjustable sealing effect after the adjusting sleeve moves.

[0010] Preferably, the bidirectional drive assembly includes a motor, which is fixedly installed inside the lower adjustment mold. The output end of the motor is connected to a fixed gear, and a transmission gear meshes with the right side of the fixed gear. The transmission gear is movably connected to the encapsulation plate. Both the front and back sides of the transmission gear are meshed with toothed plates. Rectangular limiting plates are slidably connected to the top and bottom of the toothed plates. The rectangular limiting plates are connected to the inner wall of the lower adjustment mold. The bottom of the moving plate is connected to the top of the toothed plates to realize the movement adjustment of the moving plate. The transmission gear is prevented from shifting by a distance fixing component on the moving plate.

[0011] Preferably, the distance fixing component includes a distance fixing ratchet connected to a transmission gear. A support plate is fixedly installed on the inner wall of the lower adjustment mold. A fixing rod is connected to the support plate. A reset spring is slidably connected to the fixing rod. A distance fixing block that contacts the reset spring is slidably connected to the fixing rod. The distance fixing block meshes with the surface of the distance fixing ratchet. An electromagnetic block is fixedly installed on the support plate to control the fixing / disengagement between the distance fixing block and the distance fixing ratchet. The top of the distance fixing ratchet automatically ejects the lens after detection through a linkage lifting component.

[0012] Preferably, the linkage lifting assembly includes a screw connected to a fixed-distance ratchet, a square frame threadedly connected to the top of the screw surface, the square frame being vertically slidably connected inside the placement box, a flexible sealing circular plate being provided on the top of the sealing base plate, a sealing plate being connected to the bottom of the flexible sealing circular plate, and the top of the square frame penetrating into the sealing base plate and connecting to the bottom of the sealing plate.

[0013] Preferably, a protective baffle is connected to the fixing rod, and the protective baffle is connected to the support plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention achieves airtightness testing for lenses of different specifications without the need for mold changes through the synergistic innovation of adjustment components, elastic combination components, and dynamic sealing compensation structures. The adjustment sleeve can achieve precise expansion / contraction deformation under the drive of the push plate and the clamping plate. In conjunction with the straight elastic block and the round extrusion block driven by the clamping spring, the sealing strip is subjected to multiple points of uniform pressure, which can accurately cover lenses with different shapes and contours. There is no need to equip multiple sets of special molds for different specifications of products, which solves the limitation of the existing technology that fixed molds can only adapt to a single specification of automotive lens.

[0015] Furthermore, through the precise control design of the distance-fixing component, adaptive adjustment for vehicle-mounted lenses of different specifications is achieved, significantly improving the accuracy of testing and adaptation and the efficiency of model changeover. The distance-fixing ratchet and the transmission gear rotate synchronously, which can accurately record the number of limit teeth corresponding to different lens specifications and associate them with the lens specification information to form an adaptation parameter file. When testing lenses of the same specification in the future, there is no need to readjust, and the parameters can be directly called to drive each component to reset to the precise adaptation position, realizing targeted adjustment for different lens specifications. This solves the problems of cumbersome model changeover and insufficient adaptation accuracy in the existing technology, and significantly improves the continuity and reliability of the testing process.

[0016] Furthermore, the automatic ejection of the lens after inspection is achieved through the linkage lifting component. The linkage lifting component operates synchronously with the mold opening action, which can automatically eject the lens after inspection without the need for additional drive mechanisms and operating steps, effectively shortening the inspection interval and improving inspection efficiency. In addition, this solution only optimizes the lower mold structure of the inspection machine, without modifying the existing inspection machine's control system, pressure monitoring module and other core components, reducing the difficulty of equipment modification and the enterprise's operation learning cost. At the same time, the precise sealing structure significantly reduces the amount of gas injected during inflation inspection, achieving the additional advantage of energy-saving inspection. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the present invention; Figure 2 This is a front view schematic diagram of the present invention; Figure 3 This is an exploded three-dimensional schematic diagram of the lower adjusting mold and the upper moving mold of the present invention; Figure 4 This is a three-dimensional cross-sectional schematic diagram of the adjustment component of the present invention; Figure 5 This is a three-dimensional schematic diagram of the elastic assembly component of the present invention; Figure 6 This is a three-dimensional schematic diagram of the bidirectional driving component of the present invention; Figure 7 This is a three-dimensional schematic diagram of the linkage lifting component of the present invention; Figure 8 This is a three-dimensional schematic diagram of the distance-fixing component of the present invention.

[0018] In the diagram: 1. Air tightness testing machine control unit; 2. Testing machine; 3. Lower adjusting mold; 4. Lower pressure plate; 5. Electric cylinder; 6. Upper moving mold; 7. Placement box; 8. Lens; 9. Encapsulation plate; 10. Adjusting assembly; 101. Adjusting sleeve; 102. Pressing plate; 103. Pushing plate; 104. Moving plate; 11. Elastic combination assembly; 111. Sliding rod; 112. Limiting plate; 113. Pressing spring; 114. Elastic extrusion piece; 1141. Sealing strip; 1142. Straight elastic block; 1143. Round extrusion block; 12. Elastic sealing assembly; 121. 122. Bottom plate; 13. Extrusion sealing gasket; 14. Bidirectional drive assembly; 15. Motor; 16. Fixed gear; 17. Transmission gear; 18. Tooth plate; 19. Rectangular limiting plate; 10. Spacing assembly; 12. Spacing ratchet; 13. Support plate; 14. Fixed rod; 15. Reset spring; 16. Spacing block; 17. Electromagnetic block; 18. Linkage lifting assembly; 19. Screw; 10. Square frame; 11. Flexible sealing round plate; 12. Sealing plate; 13. Protective baffle. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figures 1 to 4 As shown, this invention provides an airtightness testing machine for automotive lenses, including an airtightness testing machine control body 1, a testing machine 2 on one side of the control body 1, a lower adjustment mold 3 fixedly mounted on the testing machine 2, a lower pressure plate 4 slidably connected to the testing machine 2, an electric cylinder 5 fixedly mounted on the testing machine 2, the bottom of the electric cylinder 5 fixedly mounted to the top of the lower pressure plate 4, an upper moving mold 6 fixedly mounted on the bottom of the lower pressure plate 4, a placement box 7 embedded in the lower adjustment mold 3, a lens 8 disposed in the placement box 7, and a sealing plate 9 fixedly mounted on the bottom of the lower adjustment mold 3, and further comprising: Adjustment component 10 is set on the placement box 7 and is used to cover and seal different lenses 8 placed in the placement box 7 so that lenses 8 of different specifications can be placed in it for airtightness testing. The adjustment component 10 includes an adjustment sleeve 101, which is connected to the placement box 7. A retaining plate 102 is slidably connected inside the adjustment sleeve 101. The elastic combination component 11 is slidably connected to the abutment plate 102 and is used to combine and adapt to the specifications of the lens 8 according to different lenses 8 to elastically abut and reduce the gap between the adjustment sleeve 101 and the lens 8 of different specifications. The elastic sealing component 12 is provided on the lower adjusting mold 3 and the upper moving mold 6 to reduce the gap at the contact point between the lower adjusting mold 3 and the upper moving mold 6 and prevent air leakage. The bidirectional drive assembly 13 is located at the bottom of the lower adjustment mold 3 and is used to drive the moving plate 104 and the elastic combination assembly 11 so that they can be adjusted according to the movement requirements.

[0021] Specifically, the vehicle-mounted lens air tightness testing machine consists of two parts. The first part is the main execution equipment, which is the testing machine 2 in this solution. It provides a physical carrier for positioning, sealing, and pressurizing the lens 8, enabling mechanical actions such as mold opening / closing, and ensuring the physical conditions for air tightness testing. The second part is the control system equipment, which is the air tightness testing machine control unit 1 in this solution. It enables precise control, data management, and automated operation of the testing process. It monitors pressure changes within the cavity through pressure sensors to determine whether the air tightness is qualified. It supports manual input or barcode scanning of lens 8 specifications and calls preset parameters to achieve rapid type change testing, ensuring testing efficiency and accuracy. The air tightness testing machine control unit 1 and testing machine 2 are both components of existing air tightness testing machines and will not be described in detail here. The conventional testing method for existing automotive lens airtightness testing machines involves precisely closing a fixed upper and lower mold to form a sealed testing cavity that matches the outer contour of the lens to be tested. Gas at a set pressure is then injected into the cavity through a pre-set inflation port on the upper or lower mold. A pressure sensor monitors the pressure decay within the cavity to determine if the lens airtightness is acceptable. It should be noted that the lower pressure plate 4 and electric cylinder 5 are conventional structures used in existing testing machines 2 to drive the upper mold closing / opening, ensuring the stability of the basic mold-closing driving force. The adjustment component 10 is used for... Lenses 8 of different specifications placed in the placement box 7 are covered, pressed, and sealed tightly, ensuring that lenses 8 of different diameters and shapes can be stably limited in the placement box 7, guaranteeing the foundation of the sealed cavity for subsequent airtightness testing. The pressing plate 102 can drive the adjusting sleeve 101 to achieve different degrees of deformation or displacement to adapt to the shape of the lens 8. The elastic combination component 11 is used to elastically adapt and combine according to the specific specifications of the lens 8. Through elastic force, the adjusting sleeve 101 and the sealing strip 1141 are precisely pressed and adhered according to the different lenses 8. Further reducing the gap between the sealing strip 1141 and lenses 8 of different specifications can, on the one hand, avoid misjudgment caused by gas leakage from the gap during subsequent inflation testing, and on the other hand, save air filling amount, reduce testing time and cost. The elastic sealing component 12 is used to reduce the gap at the contact point between the lower adjusting mold 3 and the upper moving mold 6, forming a secondary sealing guarantee after mold closing, completely preventing air leakage from the top and bottom, and ensuring the airtightness of the sealed testing cavity. The bidirectional drive component 13 is used to drive the moving plate 104 and the elastic combination component 11 simultaneously. During the airtightness test, dry gas at a set pressure is injected into the sealed cavity through the preset inflation port above the upper moving mold 6. After the injection is completed, the inflation valve is closed and the pressure holding stage is entered. This is the conventional inflation method for vehicle-mounted lenses of the existing airtightness testing machine. Subsequently, the conventional process of the existing airtightness testing machine 2 can be followed. The pressure change in the cavity is monitored in real time by a high-precision pressure sensor. If the pressure does not decrease significantly within the preset pressure holding time, the airtightness of the lens 8 is judged to be qualified; if the pressure decreases beyond the threshold, it is judged to be unqualified and an alarm is triggered.

[0022] like Figures 1 to 4 As shown, the adjustment assembly 10 also includes a push plate 103, which is slidably connected in the abutment plate 102. The push plate 103 is connected to the four corners of the inner wall of the adjustment sleeve 101 to apply pressure to the four corners of the adjustment sleeve 101, so that the four corners of the adjustment sleeve 101 move synchronously to achieve sealing. A moving plate 104 is vertically connected to the four push plates 103.

[0023] Specifically, a buffer rubber sleeve is connected to the gap between the moving plate 104 and the placement box 7. The rubber sleeve is connected to the placement box 7 to buffer the movement of the moving plate 104 and the placement box 7. The pushing plate 103 plays the role of accurately covering and sealing the adjusting sleeve 101. Its function is to evenly transmit the driving force to the four corner areas of the adjusting sleeve 101. When subjected to the driving force, the pushing plate 103 can apply a precise pushing force to the adjusting sleeve 101, thereby driving the adjusting sleeve 101 to expand / contract. At the same time, depending on the different specifications of the lens 8, it can adaptively drive the sealing strip 1141 on the adjusting sleeve 101 to move synchronously, so that after the four corners of the adjusting sleeve 101 abut against each other, the two sets of adjusting sleeves 101 can form an initial seal, completing the initial sealing action of covering along the outer contour of the lens 8. This lays the foundation for the subsequent precise compression sealing of the elastic combination component 11, while avoiding the sealing gap caused by the uneven force on the adjusting sleeve 101.

[0024] like Figures 3 to 5 As shown, the elastic assembly 11 includes a sliding rod 111, which is slidably connected to the inside of the abutment plate 102. A limiting plate 112 is connected to the surface of the sliding rod 111, and an abutment spring 113 is sleeved on the surface of the sliding rod 111. One side of the abutment spring 113 contacts the abutment plate 102, and the other side of the abutment spring 113 is connected to the limiting plate 112. The outer side of the sliding rod 111 extends through to the outer side of the placement box 7 and into the interior of the lower adjusting mold 3. The sliding rod 111 applies pressure to the adjusting sleeve 101 through the elastic extrusion member 114 to reduce the gap.

[0025] Specifically, the elastic sealing component 12, as a key sealing structure for adapting to lenses 8 of different specifications, is set inside the adjusting sleeve 101. Its function is to reduce the gap between the lenses 8 of different specifications placed in the placement box 7 and the adjusting sleeve 101, ensuring that all types of lenses 8 can be stably adapted to the placement box 7 for airtightness testing. Specifically, when the adjusting sleeve 101 moves, it drives the sealing strip 1141 to move synchronously, so that the sealing strip 1141 tightly adheres to and squeezes the surface of the lens 8, accurately filling the airtight gap on the surface of the lens 8. This not only ensures the sealing foundation required for airtightness testing, but also reduces the amount of gas injected during inflation testing, achieving an energy-saving airtightness testing effect for each lens 8 to be tested. Each sliding rod 111 pushed elastically by the pressing spring 113 can apply pressure to the sealing strip 1141, so that the sealing strip 1141 is subjected to force at multiple points to reduce the airtight gap.

[0026] like Figures 3 to 5 As shown, the elastic extrusion member 114 includes a sealing strip 1141, which is connected to the adjusting sleeve 101 to fill the gap between the lens 8 and the adjusting sleeve 101. A straight elastic block 1142 is connected to the sliding rod 111, and a round extrusion block 1143 is connected to the sliding rod 111.

[0027] Specifically, the sealing strip 1141 on the adjusting sleeve 101 is in close contact with the lens 8, filling the airtight gap around the lens 8. During testing, the sliding rod 111, under the elastic pre-tightening force of the pressing spring 113, pushes the straight elastic block 1142 and the round pressing block 1143 to apply uniform pressing force to the corners and the middle area of ​​the adjusting sleeve 101 respectively. During testing, after the lens 8 is placed in the middle position of the placement box 7, the bidirectional drive assembly 13 is activated. Its internal motor 131 drives the fixed gear 132 to rotate, which in turn meshes with the transmission gear 133 to drive the toothed plates 134 on both sides synchronously. The moving plate 104 moves, and the moving plate 104 pushes the sliding rod 111 under the elastic preload of the clamping spring 113, pushing the straight elastic block 1142 and the round pressing block 1143 to apply pressure to the sealing strip 1141, so that the sealing strip 1141 is subjected to uniform pressing force at the corners and the middle area. In the area where the lens 8 is present, the sliding rod 111 is blocked by the lens 8 and cannot move inward, but it is still pushed by the elasticity of the clamping spring 113, and still applies pushing and pressing force to the straight elastic block 1142 and the round pressing block 1143, so that the straight elastic block 1142 and the round pressing block 1143 are subjected to pressing force. Pressure is applied to the sealing strip 1141 by 43 to reduce the gap between the sealing strip 1141 and the lens 8. At the same time, the pressing plate 102 drives the pushing plate 103 to move synchronously. The pushing plate 103 applies a pushing force to the four corners of the adjusting sleeve 101, causing the adjusting sleeve 101 to contract towards the lens 8. At this time, the elastic sealing assembly 12 synchronously drives the sealing strip 1141 to press against the surface of the lens 8, further reducing the gap between the adjusting sleeve 101 and the lens 8, so as to achieve a tight full-circumference coverage and pressing of the adjusting sleeve 101 against the lens 8. During this process, the elastic buffering characteristics of the elastic combination assembly 11 can avoid damage caused by excessive pressing force. Lens 8, together with the sealing effect of the elastic sealing component 12, greatly reduces the risk of gas leakage and reduces the amount of subsequent inflation. On the other hand, the control system of the testing machine 2 will collect the rotation angle of the transmission gear 133 and the travel data of the toothed plate 134 in the bidirectional drive component 13 in real time, and record the deformation state of the adjusting sleeve 101 and the action position of the elastic sealing component 12 in association, forming an adaptation parameter file that matches the current lens 8 specification. When testing lenses 8 of the same specification in the future, the file can be directly called to drive each component to reset to the corresponding state without re-adjustment, thus achieving rapid adaptation.

[0028] like Figures 3 to 5 As shown, the elastic sealing assembly 12 includes a sealing base plate 121, the top of which contacts the bottom of the adjusting sleeve 101. A compression sealing pad 122 is fixedly installed on the bottom of the upper moving mold 6, and the bottom of the compression sealing pad 122 contacts the top of the adjusting sleeve 101.

[0029] Specifically, the sealing base plate 121 is located at the bottom of the placement box 7, and its top is in close contact with the bottom of the adjusting sleeve 101. Its function is to seal the airtight gap between the bottom of the adjusting sleeve 101 and the placement box 7, preventing gas leakage from the bottom of the adjusting sleeve 101 during subsequent inflation testing. The compression sealing gasket 122 is fixedly installed at the bottom of the upper moving mold 6, and its bottom is in contact with the top of the adjusting sleeve 101. It is specifically used to seal the airtight gap between the upper moving mold 6 and the adjusting sleeve 101, preventing gas leakage from the mold closing part. Furthermore, to enhance the overall sealing effect between the lower adjusting mold 3 and the upper moving mold 6, a concave sealing frame is connected to the top of the lower adjusting mold 3, and a convex sealing frame is correspondingly connected to the bottom of the upper moving mold 6. When the upper moving mold 6 and the lower adjusting mold 3 are closed, the convex sealing frame can be precisely embedded in the concave sealing frame to form a nested sealing structure. Together with the sealing base plate 121 and the compression sealing gasket 122, it achieves triple sealing protection, eliminating gas leakage during the testing process, while not affecting the deformation action of the adjusting sleeve 101 when adapting to different specifications of lenses 8.

[0030] like Figures 3 to 5 As shown, the top of the adjusting sleeve 101 and the bottom of the compression sealing gasket 122 are both symmetrical straight teeth. When the top of the adjusting sleeve 101 and the bottom of the compression sealing gasket 122 are in compression contact, compression sealing is achieved through the symmetrical straight teeth grooves. The bottom of the adjusting sleeve 101 and the top of the sealing base plate 121 are both symmetrical oblique teeth. When the bottom of the adjusting sleeve 101 and the top of the sealing base plate 121 are in contact, the oblique teeth groove at the bottom of the adjusting sleeve 101 and the oblique teeth groove at the top of the sealing base plate 121 are relatively squeezed and engaged, achieving an adjustable sealing effect after the adjusting sleeve 101 moves.

[0031] Specifically, the contact areas between the adjusting sleeve 101 and the compression sealing gasket 122 and the sealing base plate 121 adopt a targeted toothed structure design. The top of the adjusting sleeve 101 and the bottom of the compression sealing gasket 122 are both machined into symmetrical straight toothed structures. When the upper moving mold 6 drives the compression sealing gasket 122 to press against the top of the adjusting sleeve 101, the straight toothed grooves of the two will precisely align and mesh with each other. On the one hand, the toothed structure can increase the sealing contact area, improve the transmission efficiency of the extrusion force, and make the sealing surface fit more tightly; on the other hand, the meshing toothed grooves can form a labyrinth-like sealing channel. Even if a trace amount of gas attempts to penetrate, it will be blocked multiple times by the toothed grooves, greatly reducing the risk of leakage and achieving efficient compression sealing. Correspondingly, the bottom of the adjusting sleeve 101 and the sealing base plate 121 are also designed with symmetrical straight toothed structures. The top of the sealing plate 121 is machined into a symmetrical oblique tooth structure. Since the adjusting sleeve 101 will have a slight displacement when adapting to different lens specifications 8, the oblique tooth design can adapt to this displacement requirement. When the bottom of the adjusting sleeve 101 contacts the top of the sealing plate 121, the oblique tooth grooves of the two will be relatively squeezed and locked together with the displacement of the adjusting sleeve 101. This will not restrict the adaptation and movement of the adjusting sleeve 101, but will also form a stable seal through the tight fit of the oblique tooth surface. This achieves an adjustable sealing effect that can still be sealed after the adjusting sleeve 101 moves. The synergistic application of the straight tooth and oblique tooth structure allows the top and bottom seals of the adjusting sleeve 101 to take into account both the adaptation flexibility and the sealing effect, completely blocking the leakage path from the key parts and ensuring the accuracy of the airtightness test.

[0032] like Figures 3 to 8 As shown, the bidirectional drive assembly 13 includes a motor 131, which is fixedly installed inside the lower adjustment mold 3. The output end of the motor 131 is connected to a fixed gear 132. A transmission gear 133 meshes with the right side of the fixed gear 132. The transmission gear 133 is movably connected to the encapsulation plate 9. A toothed plate 134 meshes with both the front and back of the transmission gear 133. A rectangular limiting plate 135 is slidably connected to the top and bottom of the toothed plate 134. The rectangular limiting plate 135 is connected to the inner wall of the lower adjustment mold 3. The bottom of the moving plate 104 is connected to the top of the toothed plate 134 to realize the movement adjustment of the moving plate 104. The distance fixing assembly 136 on the moving plate 104 realizes the anti-displacement function of the transmission gear 133.

[0033] Specifically, after the motor 131 starts, its output end drives the fixed gear 132 to rotate. The fixed gear 132 meshes with the transmission gear 133 to rotate synchronously. The transmission gear 133 is a single unit, and there are two toothed plates 134 meshing with it. The two toothed plates 134 are symmetrically distributed one in front and one behind, and both toothed plates 134 are limited and guided by the rectangular limiting plate 135. When the transmission gear 133 rotates, it will drive the front toothed plate 134 and the rear toothed plate 134 to move in opposite directions along the rectangular limiting plate 135. That is, one toothed plate 134 moves to the left and the other toothed plate 134 moves to the right. The top of the toothed plate 134 is connected to the moving plate 104, which in turn drives the moving plates 104 on both sides to achieve symmetrical movement and adjustment, and complete the synchronous mold closing / opening action.

[0034] like Figures 6 to 8 As shown, the distance fixing assembly 136 includes a distance fixing ratchet 1361, which is connected to the transmission gear 133. A support plate 1362 is fixedly installed on the inner wall of the lower adjustment mold 3. A fixing rod 1363 is connected to the support plate 1362. A clamping spring 113 is slidably connected to the fixing rod 1363. A distance fixing block 1365 that contacts the clamping spring 113 is slidably connected to the fixing rod 1363. The distance fixing block 1365 engages with the surface of the distance fixing ratchet 1361. An electromagnetic block 1366 is fixedly installed on the support plate 1362 to control the fixing / disengagement between the distance fixing block 1365 and the distance fixing ratchet 1361. The top of the distance fixing ratchet 1361 automatically ejects the lens 8 after the detection is completed through the linkage lifting assembly 1367.

[0035] Specifically, the fixed-distance ratchet 1361 is connected to the transmission gear 133 and rotates synchronously with the transmission gear 133. The support plate 1362 on the inner wall of the lower adjusting mold 3 provides installation support for the entire fixed-distance structure. The fixed-distance block 1365, which is slidably connected to the fixed rod 1363, is always engaged with the tooth groove of the fixed-distance ratchet 1361 under the elastic preload of the reset spring 1364. When the lens 8 completes the limit sealing and enters the inflation detection stage, even if the change in air pressure in the cavity generates a reverse thrust on the adjusting sleeve 101, this thrust will be transmitted to the transmission gear 133. The engaged fixed-distance block 1365 and the fixed-distance ratchet 1361 can directly lock the rotation of the transmission gear 133. To prevent displacement of the transmission gear 133 and the toothed plate 134, thereby preventing loosening of the sealing gap between the adjusting sleeve 101 and the lens 8, and ensuring the stability of the sealing during the testing process, the number of limiting teeth for each specification of lens 8 can be accurately recorded by rotating the number of teeth, providing data support for subsequent rapid testing: Since the fixed-distance ratchet 1361 rotates synchronously with the transmission gear 133, and the rotation angle of the two strictly corresponds to the rotation of the transmission gear 133 for one revolution, the fixed-distance ratchet 1361 rotates synchronously for one revolution, and the teeth of the fixed-distance ratchet 1361 are evenly distributed standard helical teeth, the rotation angle and the travel of the toothed plate 134 corresponding to each tooth are fixed values;When the adjusting component 10 and the elastic combination component 11 drive the sealing strip 1141 to precisely limit the current lens 8, the control system of the inspection machine 2 will automatically collect the number of rotating teeth of the fixed-distance ratchet 1361. The collection method is to monitor the rotation angle in real time through an angle sensor coaxially connected to the fixed-distance ratchet 1361 or the transmission gear 133, and calculate the number of rotating teeth by combining it with the preset total number of teeth of the fixed-distance ratchet 1361. This number of teeth is then associated with the specification information of the lens 8 to be inspected, such as lens diameter and model. This association can be manually entered by the operator through the human-machine interface of the inspection machine 2, or automatically entered by scanning the QR code / barcode on the lens. This forms a matching parameter file between the lens 8 specification and the number of limiting teeth, which is stored in the control system database of the inspection machine 2. When inspecting the same lens 8 in the future, the operator only needs to enter the corresponding lens 8 specification in the human-machine interface of the inspection machine 2, or automatically identify the specification by scanning the lens mark, and the control system will retrieve the corresponding specification from the database. The corresponding limit tooth count parameter drives the bidirectional drive assembly 13 to rotate the transmission gear 133 to the corresponding tooth count position, thereby precisely driving the two side tooth plates 134 to move to the preset stroke, so that the sealing strip 1141 can be quickly adjusted to the limit position that matches the lens 8 of this specification, without the need for manual adjustment, greatly improving the changeover efficiency. In addition, the electromagnetic block 1366 on the support plate 1362 is used to control the engagement / disengagement state of the spacer block 1365 and the spacer ratchet 1361. When the limit position needs to be adjusted... When changing to lens specification 8, the electromagnetic block 1366 is energized, generating a magnetic force to attract the spacer block 1365. This causes the spacer block 1365 to overcome the preload of the clamping spring 113 and slide along the fixing rod 1363, disengaging from the tooth groove of the spacer ratchet 1361 and releasing the lock on the transmission gear 133. When the limit adjustment is completed and the detection stage begins, the electromagnetic block 1366 is de-energized, and the spacer block 1365 is reset under the action of the reset spring 1364, re-engaging and locking with the spacer ratchet 1361 to ensure a stable detection process.

[0036] like Figures 6 to 8 As shown, the linkage lifting assembly 1367 includes a screw 13671, which is connected to a fixed-distance ratchet 1361. A square frame 13672 is threadedly connected to the top of the surface of the screw 13671. The square frame 13672 is vertically slidably connected inside the placement box 7. A flexible sealing circular plate 13673 is provided on the top of the sealing base plate 121. A sealing plate 13674 is connected to the bottom of the flexible sealing circular plate 13673. The top of the square frame 13672 extends through the sealing base plate 121 and is connected to the bottom of the sealing plate 13674.

[0037] Specifically, the linkage lifting assembly 1367 includes a screw 13671, a square frame 13672, a flexible sealing circular plate 13673, and a sealing plate 13674. The screw 13671 is connected to a fixed-distance ratchet 1361 and rotates synchronously with the fixed-distance ratchet 1361. The top surface of the screw 13671 is threadedly connected to the square frame 13672, and the square frame 13672 is vertically slidably connected inside the placement box 7 to achieve vertical lifting under threaded transmission. The flexible sealing circular plate 13673 on the top of the sealing base plate 121 is used to directly contact the ejector lens 8. The flexible material can avoid scratching the optical surface of the lens 8. The bottom of the flexible sealing circular plate 13673 is connected to the sealing plate 13674. The top of the square frame 13672 extends through the sealing base plate 121 and is sealed. The bottom of plate 13674 is connected to form a power transmission. After the lens 8 is inspected, it enters the mold opening stage. The electromagnetic block 1366 is energized and attracts the spacer block 1365 to disengage from the spacer ratchet 1361. The bidirectional drive assembly 13 drives the transmission gear 133 to rotate in the opposite direction to achieve mold opening and loosening. The spacer ratchet 1361, which is fixed with the transmission gear 133, rotates synchronously in the opposite direction, thereby driving the screw 13671 to rotate synchronously. When the screw 13671 rotates, it drives the square frame 13672 to rise vertically along the placement box 7 through the threaded transmission. The square frame 13672 drives the sealing plate 13674 and the flexible sealing round plate 13673 to rise synchronously. The flexible sealing round plate 13673 pushes the bottom of the lens 8, pushing the lens 8 out of the limiting and sealing state of the adjusting sleeve 101. The entire ejection process The ejection process is synchronized with the mold opening and loosening action, requiring no additional drive mechanism or operating steps. The ejected lens 8 can be directly picked up and placed, quickly freeing up a workstation for the next lens 8's inspection, effectively shortening the inspection interval and ensuring the continuous and rapid inspection cycle requirements. Regarding the screw 13671, its upper and lower ends are smooth and unthreaded, with only the middle section having a threaded segment. During normal ejection, the bidirectional drive assembly 13 drives the screw 13671 to rotate. The threaded segment of the screw 13671 engages with the threaded hole of the square frame 13672, driving the square frame 13672 to rise along the placement box 7 via threaded transmission, thus ejecting the lens 8 from the flexible sealing plate 13673. Since the length of the threaded segment of the screw 13671 is limited to a safe travel range, when the square frame... When the square frame 13672 rises to the end of the threaded section, the thread engagement terminates. At this time, the screw 13671 continues to rotate, but its smooth section does not engage with the inner wall of the square frame 13672, and it can no longer drive the square frame 13672 to rise, achieving the effect of the screw 13671 spinning freely. This structurally prevents damage to components caused by excessive movement. During the reset phase, the screw 13671 rotates in the opposite direction. Its smooth section first slides relative to the square frame 13672. After the threaded section re-aligns and engages with the threaded hole of the square frame 13672, the square frame 13672 can be smoothly lowered and reset through the threaded transmission, ensuring the normal operation of subsequent inspection cycles. The entire ejection process is synchronized with the mold opening action, requiring no additional drive mechanism. The ejected lens 8 can be directly picked up and put in, effectively shortening the inspection interval.Furthermore, safety protection can be achieved solely by controlling the length of the threaded section of the 13671 screw, simplifying the structural design while maintaining the stability of multi-specification lens testing and meeting the requirements for rapid changeover.

[0038] like Figure 8 As shown, a protective baffle 14 is connected to the fixed rod 1363, and the protective baffle 14 is connected to the support plate 1362.

[0039] Specifically, the protective baffle 14 on the fixing rod 1363 serves to prevent the spacer block 1365 from moving out excessively, and can effectively prevent the spacer block 1365 from slipping.

[0040] The working process of the technical solution provided by this invention is as follows: In use, the airtightness testing machine control unit 1 and testing machine 2 are first activated. The operator places the vehicle-mounted lens to be tested into the initial position in the middle of the placement box 7 of the adjustment mold. The lens specifications 8 can be manually entered through the human-machine interface of the testing machine 2, or the specification information can be automatically entered by scanning the lens QR code / barcode. The control system retrieves the limit tooth number adaptation parameter file corresponding to the specification, drives the bidirectional drive component 13 to start, and the motor 131 drives the fixed gear 132 and the transmission gear 133 to rotate, thereby driving the front and rear teeth. Plate 134 moves in the opposite direction, which drives the pressing plate 102 and the pushing plate 103 to move via the moving plate 104, causing the adjusting sleeve 101 to contract and expand towards the lens 8. At the same time, the sliding rod 111 of the elastic assembly 11, under the action of the pressing spring 113, pushes the straight elastic block 1142 and the round pressing block 1143 to apply pressure to the sealing strip 1141 at multiple points, so as to achieve full circumference coverage of the lens 8 and reduce the airtight gap. During this process, the toothed structure of the adjusting sleeve 101, the sealing base plate 121, and the pressing sealing gasket 122 forms a dynamic sealing compensation. A sealed testing chamber is formed. After sealing, dry gas at a set pressure is injected into the chamber through the preset inflation port of the moving mold. The inflation valve is then closed to enter the pressure holding stage. A high-precision pressure sensor monitors the pressure change in the chamber in real time. The control system determines whether the airtightness of lens 8 is qualified based on the pressure decay. If qualified, the data is recorded; if not qualified, an alarm is triggered. After the test is completed, the bidirectional drive component 13 rotates in reverse to start the mold opening program. The electromagnetic block 1366 is energized to attract the distance block 1365 and disengage from the distance ratchet 1361. The transmission gear 13... 3. The fixed-distance ratchet 1361 and the screw 13671 rotate synchronously in opposite directions. The screw 13671 drives the square frame 13672, the sealing plate 13674 and the flexible sealing round plate 13673 to rise through the threaded transmission. Synchronously with the mold opening action, the lens 8 is automatically ejected from the adjustment cavity. The operator can directly remove the ejected lens 8. The equipment automatically resets, the threaded section of the screw 13671 re-engages, the square frame 13672 descends, and the fixed-distance block 1365 re-engages the fixed-distance ratchet 1361, so that the next lens 8 can be inspected.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vehicle-mounted lens airtightness testing machine, comprising an airtightness testing machine control body (1), a testing machine (2) provided on one side of the airtightness testing machine control body (1), a lower adjustment mold (3) fixedly installed on the testing machine (2), a lower pressure plate (4) slidably connected to the testing machine (2), an electric cylinder (5) fixedly installed on the testing machine (2), the bottom of the electric cylinder (5) fixedly installed with the top of the lower pressure plate (4), and an upper moving mold (6) fixedly installed at the bottom of the lower pressure plate (4), characterized in that, The lower adjustment mold (3) is inlaid with a placement box (7), and a lens (8) is disposed in the placement box (7). A packaging plate (9) is fixedly installed at the bottom of the lower adjustment mold (3), and it also includes: Adjustment component (10), which is set on the placement box (7), is used to cover and seal different lenses (8) placed in the placement box (7) so that lenses (8) of different specifications can be placed in it for airtightness testing; The adjustment assembly (10) includes an adjustment sleeve (101) and a push plate (103). The adjustment sleeve (101) is connected to the placement box (7). A retaining plate (102) is slidably connected inside the adjustment sleeve (101). The push plate (103) is slidably connected in the retaining plate (102). The push plate (103) is connected to the four corners of the inner wall of the adjustment sleeve (101) to apply pressure to the four corners of the adjustment sleeve (101) so that the four corners of the adjustment sleeve (101) move synchronously to achieve sealing. A moving plate (104) is vertically connected to the four push plates (103). The elastic combination component (11) is slidably connected to the abutment plate (102) and is used to combine and adapt to the specifications of the lens (8) according to different lenses (8) to elastically abut and reduce the gap between the adjustment sleeve (101) and the lens (8) of different specifications. An elastic sealing assembly (12) is provided on the lower adjusting mold (3) and the upper moving mold (6) to reduce the gap at the contact point between the lower adjusting mold (3) and the upper moving mold (6); A bidirectional drive assembly (13) is disposed at the bottom of the lower adjustment mold (3) for driving the moving plate (104) and the elastic combination assembly (11).

2. The vehicle-mounted lens airtightness testing machine according to claim 1, characterized in that: The elastic assembly (11) includes a sliding rod (111) which is slidably connected to the inside of the abutment plate (102). A limiting plate (112) is connected to the surface of the sliding rod (111). A retaining spring (113) is sleeved on the surface of the sliding rod (111). One side of the retaining spring (113) is in contact with the abutment plate (102), and the other side of the retaining spring (113) is connected to the limiting plate (112). The outer side of the sliding rod (111) extends through to the outer side of the placement box (7) and into the interior of the lower adjusting mold (3). The sliding rod (111) applies pressure to the adjusting sleeve (101) through the elastic extruder (114) to reduce the gap.

3. The vehicle-mounted lens airtightness testing machine according to claim 2, characterized in that: The elastic extrusion member (114) includes a sealing strip (1141) connected to the adjusting sleeve (101) to fill the gap between the lens (8) and the adjusting sleeve (101). A straight elastic block (1142) is connected to the sliding rod (111), and a round extrusion block (1143) is connected to the sliding rod (111).

4. The vehicle-mounted lens airtightness testing machine according to claim 3, characterized in that: The elastic sealing assembly (12) includes a sealing base plate (121), the top of which contacts the bottom of the adjusting sleeve (101), and a compression sealing pad (122) is fixedly installed on the bottom of the upper moving mold (6), the bottom of which contacts the top of the adjusting sleeve (101).

5. The vehicle-mounted lens airtightness testing machine according to claim 4, characterized in that: The top of the adjusting sleeve (101) and the bottom of the compression sealing gasket (122) are both symmetrical straight teeth. When the top of the adjusting sleeve (101) and the bottom of the compression sealing gasket (122) are in compression contact, compression sealing is achieved through the symmetrical straight tooth grooves. The bottom of the adjusting sleeve (101) and the top of the sealing base plate (121) are both symmetrical oblique teeth. When the bottom of the adjusting sleeve (101) and the top of the sealing base plate (121) are in contact, the oblique tooth groove at the bottom of the adjusting sleeve (101) and the oblique tooth groove at the top of the sealing base plate (121) are relatively squeezed and engaged, thereby achieving an adjustable sealing effect after the adjusting sleeve (101) moves.

6. The vehicle-mounted lens airtightness testing machine according to claim 5, characterized in that: The bidirectional drive assembly (13) includes a motor (131), which is fixedly installed inside the lower adjustment mold (3). The output end of the motor (131) is connected to a fixed gear (132). A transmission gear (133) meshes with the right side of the fixed gear (132). The transmission gear (133) is movably connected to the encapsulation plate (9). The front and back sides of the transmission gear (133) are both meshed with toothed plates (134). The top and bottom of the toothed plates (134) are slidably connected to rectangular limiting plates (135). The rectangular limiting plates (135) are connected to the inner wall of the lower adjustment mold (3). The bottom of the moving plate (104) is connected to the top of the toothed plates (134) to realize the movement adjustment of the moving plate (104). The moving plate (104) is equipped with a distance fixing assembly (136) to realize the anti-displacement function of the transmission gear (133).

7. The vehicle-mounted lens airtightness testing machine according to claim 6, characterized in that: The distance-fixing assembly (136) includes a distance-fixing ratchet (1361), which is connected to a transmission gear (133). A support plate (1362) is fixedly installed on the inner wall of the lower adjusting mold (3). A fixing rod (1363) is connected to the support plate (1362). A reset spring (1364) is slidably connected to the fixing rod (1363). A spring that is slidably connected to the fixing rod (1363) is also slidably connected to the reset spring (1364). 1364) The fixed distance block (1365) is in contact with the fixed distance ratchet (1361) and the fixed distance block (1365) is engaged on the surface of the fixed distance ratchet (1361). An electromagnetic block (1366) is fixedly installed on the support plate (1362) to control the fixing / disengagement between the fixed distance block (1365) and the fixed distance ratchet (1361). The top of the fixed distance ratchet (1361) is automatically ejected after the lens (8) is detected by the linkage lifting assembly (1367).

8. The vehicle-mounted lens airtightness testing machine according to claim 7, characterized in that: The linkage lifting assembly (1367) includes a screw (13671), which is connected to a fixed-distance ratchet (1361). A square frame (13672) is threadedly connected to the top of the surface of the screw (13671). The square frame (13672) is vertically slidably connected inside the placement box (7). A flexible sealing disc (13673) is provided on the top of the sealing base plate (121). A sealing plate (13674) is connected to the bottom of the flexible sealing disc (13673). The top of the square frame (13672) extends through the sealing base plate (121) and is connected to the bottom of the sealing plate (13674).

9. The vehicle-mounted lens airtightness testing machine according to claim 8, characterized in that: A protective baffle (14) is connected to the fixed rod (1363), and the protective baffle (14) is connected to the support plate (1362).

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