Lens cementing jig and lens cementing method

Abstract

The present application relates to the technical field of lens assembly, and provides a lens gluing jig and a lens gluing method, the lens gluing jig comprises a lens picking mechanism, a pressing mechanism and a negative pressure box, the lens picking mechanism comprises a first positioning part, and the first positioning part is used for being connected with a lens; the pressing mechanism is used for pushing the lens picking mechanism to move along the direction from the first positioning part to a shell; the shell, the pressing mechanism and the lens picking mechanism are all arranged in the negative pressure box. Wherein, the pressing mechanism pushes the lens picking mechanism to move along the direction from the first positioning part to the shell and is connected, so as to press the lens on the first positioning part on the shell which has been coated with glue, realize the automatic gluing of the lens and the shell in the negative pressure environment, solve the problem that the glue will overflow along the edge of the lens gluing position with the gas in the shell during the normal pressure gluing, be beneficial to improving the air tightness between the lens and the shell, omit the manual glue wiping and the manual glue supplementing and other operations, and the automatic gluing is carried out by using the pressing mechanism, so that the gluing efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of lens assembly technology, and in particular to a lens bonding fixture and a lens bonding method. Background Technology

[0002] In existing technologies, LiDAR and camera products, being precision instruments, have high requirements for airtightness. During assembly, the sealed housing of LiDAR or camera products has windows for lens mounting. The lenses are bonded to the housing using adhesive applied to the window edges, forming a sealed cavity. However, during manual assembly, the lens pressing against the window compresses the air inside the housing, causing it to overflow and drag adhesive along the window edges, resulting in air pockets at the bonding points and poor product sealing. Therefore, all defective products need to undergo airtightness testing again to identify all air pockets and manually fill each one with adhesive, while wiping away any overflowing adhesive. Furthermore, since assembly, adhesive filling, and adhesive wiping all require manual work, manual assembly is time-consuming and difficult when multiple lenses need to be bonded to precision instruments.

[0003] Therefore, existing glue-on methods suffer from technical problems such as poor sealing and low assembly efficiency. Summary of the Invention

[0004] This invention provides a lens bonding fixture and a lens bonding method, aiming to solve the technical problems of poor sealing and low assembly efficiency in the bonding method.

[0005] In a first aspect, this application provides a lens binding fixture, the lens binding fixture comprising:

[0006] A lens pickup mechanism, the lens pickup mechanism including a first positioning part, the first positioning part being used to connect with a lens;

[0007] A pressing mechanism is used to push the piece-picking mechanism to move along the direction from the first positioning part to the housing;

[0008] The negative pressure box, the housing, the pressing mechanism and the picking mechanism are all disposed inside the negative pressure box.

[0009] In one embodiment, the lens pickup mechanism further includes a pressure plate and a separating member. The pressure plate is used to move the separating member, which is mounted on the pressure plate and is used to abut against and press the lens.

[0010] In one embodiment, the pickup mechanism includes a base, a pickup rod, and a buffer pad. The pickup rod is mounted on the base, one end of which is connected to or in contact with the first positioning part. The bottom of the base is connected to the buffer pad, and the buffer pad abuts against the housing.

[0011] In one embodiment, the base includes a first guide hole extending along the first positioning portion to the housing, and the separator passes through the first guide hole; the separator is provided with a first limiting step, the first limiting step being located at the end of the separator away from the base, and the diameter of the first limiting step being larger than the diameter of the first guide hole.

[0012] In one embodiment, the pickup mechanism further includes: an elastic reset member disposed between the pressure plate and the base; or, a guide rod mounted on the base, the pressure plate having a second guide hole, the guide rod passing through the second guide hole; the guide rod having a second limiting step located at the end of the guide rod near the pressure plate, the diameter of the second limiting step being larger than the diameter of the second guide hole.

[0013] In one embodiment, the pressing mechanism includes a bracket, a drive member, and a pressing member;

[0014] The driving component is mounted on the bracket and is used to drive the pressing component;

[0015] The pressing member is connected to the driving member, and the pressing member is used to push the pressure plate to move along the direction from the first positioning part to the housing.

[0016] In one embodiment, the lens mounting fixture further includes a positioning carrier and a mounting base, the positioning carrier being fixed to the mounting base and used to place the housing.

[0017] In one embodiment, the pickup mechanism is positioned perpendicular to the housing, and the pressing mechanism is connected to the mounting base via the bracket.

[0018] In one embodiment, the lens mounting fixture further includes a wireless communication module electrically connected to the pressing mechanism. The wireless communication module is used to receive external control commands and control the pressing mechanism.

[0019] Secondly, this application provides a lens binding method, applied to the lens binding fixture described in any one of the above claims, the method comprising the following steps:

[0020] The glued housing is placed inside the negative pressure chamber, and the lens is positioned and installed in the first positioning part of the lens pickup mechanism; wherein, the lens pickup mechanism is located inside the negative pressure chamber;

[0021] The air pressure inside the negative pressure box is adjusted to a first preset air pressure value, which is less than the air pressure outside the negative pressure box.

[0022] Operate the pressing mechanism located inside the negative pressure box to push the lens away from the first positioning part and press the lens onto the housing;

[0023] The air pressure in the negative pressure box is adjusted to a second preset air pressure value, which is greater than the first preset air pressure value.

[0024] In one embodiment, the pressing mechanism is operated wirelessly via remote control.

[0025] The beneficial effects of the lens gluing fixture and lens gluing method provided by this invention are as follows: The pressing mechanism, the lens picking mechanism, and the glued housing are all housed within a negative pressure chamber. The first positioning part of the lens picking mechanism is connected to the lens. The air pressure inside the negative pressure chamber is lower than the air pressure outside the chamber, providing a negative pressure environment for the gluing operation. The pressing mechanism pushes the lens picking mechanism to move along the direction from the first positioning part to the housing, thereby pressing the lens on the first positioning part onto the glued housing. This achieves automatic gluing of the lens and housing in a negative pressure environment, solving the problem of glue overflow during normal pressure gluing, improving the airtightness between the lens and housing, eliminating manual glue wiping and touch-up operations, and improving the yield and airtightness of the glued products. Simultaneously, the use of the pressing mechanism automates the lens gluing process, significantly improving gluing efficiency. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the lens mounting fixture provided in an embodiment of the present invention;

[0028] Figure 2 for Figure 1 A schematic diagram of the lens binding fixture after omitting the negative pressure box;

[0029] Figure 3 for Figure 2 A schematic diagram of the lens binding fixture after omitting the lens pickup mechanism;

[0030] Figure 4 for Figure 2 A schematic diagram of the lens pickup mechanism in the lens binding fixture;

[0031] Figure 5 for Figure 2 Another perspective view of the lens pickup mechanism in the lens binding fixture;

[0032] Figure 6 for Figure 2 Exploded view of the lens pickup mechanism in the lens mounting fixture;

[0033] Figure 7 for Figure 2 Another perspective view of the lens pickup mechanism in the lens binding fixture;

[0034] Figure 8 This is a schematic diagram of the base of the lens picking mechanism in the embodiment.

[0035] Figure 9 This is a schematic diagram of the shell structure in this embodiment;

[0036] Figure 10 This is a schematic flowchart of the lens bonding method provided in this embodiment.

[0037] The following are the labeling elements in the figure:

[0038] 1. Housing; 101. Mounting position; 2. Lens; 3. Adhesive;

[0039] 10. Piece pickup mechanism; 11. First positioning part; 12. Pressure plate; 121. Second guide hole; 122. Third guide hole; 123. Fourth guide hole; 124. Second mounting hole; 13. Separator; 131. First limiting step; 14. Base; 141. First guide hole; 142. Locking hole; 143. First mounting hole; 144. Third mounting hole; 145. Fourth mounting hole; 146. Protective cavity; 147. Mirror groove; 15. Pickup rod; 16. Buffer pad; 17. Elastic reset component; 171. Mounting rod; 18. Guide rod; 181. Second limiting step;

[0040] 20. Pressing mechanism; 21. Bracket; 22. Driving component; 221. Fifth guide hole; 23. Pressing component; 231. Receiving through hole; 232. Notch;

[0041] 30. Negative pressure box; 31. Viewing window;

[0042] 41. Positioning carrier; 411. Second positioning unit; 412. Operating slot; 42. Mounting base; 43. Wireless communication module. Detailed Implementation

[0043] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0044] Throughout this specification, references to "an embodiment" or "an embodiment" mean that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of this application. Therefore, the phrases "in one embodiment" or "in some embodiments" appear in various places throughout the specification, and not all refer to the same embodiment. Furthermore, in one or more embodiments, particular features, structures, or characteristics may be combined in any suitable manner.

[0045] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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 this invention.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0047] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0048] Example 1

[0049] Please combine Figures 1 to 4 The lens mounting fixture of this application includes a lens pickup mechanism 10, a pressing mechanism 20, and a negative pressure box 30. The lens pickup mechanism 10 includes a first positioning part 11, which is used to connect with the lens 2. The pressing mechanism 20 is used to push the lens pickup mechanism 10 to move in the X direction from the first positioning part 11 to the housing 1. The housing 1, the pressing mechanism 20, and the lens pickup mechanism 10 are all disposed inside the negative pressure box 30.

[0050] The pressing mechanism 20 and the lens pickup mechanism 10 are housed within a negative pressure chamber 30. After the housing 1 is coated with adhesive, it is placed inside the negative pressure chamber 30. The first positioning part 11 of the lens pickup mechanism 10 is connected to the lens 2. The air pressure inside the negative pressure chamber 30 is lower than the air pressure outside the chamber, providing a negative pressure environment for the bonding operation. The pressing mechanism 20 pushes the lens pickup mechanism 10 to move along the X direction from the first positioning part 11 to the housing 1, thereby pressing the lens 2 on the first positioning part 11 onto the coated housing 1, achieving automatic bonding of the lens 2 and housing 1 in a negative pressure environment. In a normal pressure environment, when the lens 2 is assembled onto the coated housing 1, it compresses the air inside the housing 1. The compressed air diffuses from the inside of the housing 1 to the outside through the gap at the bonding position, causing the adhesive 3 to overflow from the bonding position along the side wall of the housing 1 with the airflow, resulting in poor sealing between the housing 1 and the lens 2. Generally, about 50% of products require significant time for manual adhesive reapplying and retesting due to poor airtightness. The lens 2 is glued to the housing 1 in a negative pressure environment, which prevents air flow and glue 3 from overflowing. This improves the airtightness between the lens 2 and the housing 1 and the yield rate of glued products. It also eliminates the need for manual wiping and re-applying of glue after overflow. Furthermore, the use of the pressing mechanism 20 for gluing shortens the gluing time of the lens 2 and improves the gluing efficiency.

[0051] In one embodiment, when the lens mounting fixture is in operation, the air pressure inside the negative pressure chamber 30 is at least 0.07 MPa lower than the air pressure outside the negative pressure chamber 30. That is, the air pressure inside the negative pressure chamber 30 is less than or equal to -0.07 MPa. The negative pressure environment can prevent the glue 3 from overflowing from the mounting position along the side wall of the housing 1 during lens mounting. On the other hand, it weakens the connection force between the first positioning part 11 and the lens 2. Especially when the first positioning part 11 connects the lens 2 by adsorption, it makes it easier for the pressing mechanism 20 to push the lens 2 to move in the X direction from the first positioning part 11 to the housing 1, thereby separating the lens 2 from the first positioning part 11.

[0052] In some embodiments, when the lens mounting fixture is in operation, the air pressure inside the negative pressure chamber 30 is 0.07 MPa to 0.08 MPa lower than the air pressure outside the negative pressure chamber 30. On the one hand, this avoids an increase in the time required to reach the required working air pressure due to a larger preset negative pressure value, thus facilitating the rapid formation of a negative pressure environment. On the other hand, compared to a complete vacuum state, the air pressure inside the negative pressure chamber 30 is greater than or equal to -0.08 MPa during operation, resulting in a more stable gas state inside the negative pressure chamber 30 and reducing the external air pressure load borne by the negative pressure chamber 30. In some embodiments, the air pressure inside the negative pressure chamber 30 is -0.07 MPa, -0.073 MPa, -0.075 MPa, or -0.08 MPa.

[0053] Furthermore, manually pressing the lens 2 onto the housing 1 can easily leave fingerprints, causing the lens 2 to become dirty. Simultaneously, fingerprints and other dirt can obstruct the lens 2, affecting the detection accuracy and precision of the sensors inside the housing 1 (e.g., image clarity, point cloud integrity), especially for precision products such as LiDAR. Compared to manual operation, using a lens pickup mechanism 10 with its first positioning part 11 connected to the lens 2 and a pressing mechanism 20 that pneumatically presses it down effectively avoids hand contamination of the lens 2.

[0054] The lens mounting fixture provided in this application embodiment can be applied to the mounting of housing 1 and lens 2 in the fields of automotive electronics and 3C electronics. Figure 3 and Figure 9 The housing 1 includes a mounting position 101. Adhesive 3 is added to the mounting position 101, and the lens 2 needs to be glued to the mounting position 101 to form a sealed cavity inside the assembled housing 1, ensuring the airtightness of the product, which is especially important for precision products. In some embodiments, precision products include precision electronic products or precision optical products, such as lidar, lenses, LED lights, mobile communication terminals, computers, sensors, etc.

[0055] In some embodiments, combined with Figure 1 The negative pressure chamber 30 has a volume of less than or equal to 10L, enabling it to create a negative pressure environment in a short time, for example, reaching the required negative pressure state within 10 seconds, which is beneficial for improving the bonding efficiency of the lens 2. Simultaneously, the smaller volume requires less energy to generate negative pressure, contributing to energy conservation and environmental protection. In some embodiments, the negative pressure chamber 30 has a volume greater than or equal to 1L, providing suitable storage and operating space for housing 1, lens pickup mechanism 10, and pressing mechanism 20. In some embodiments, the volume of the negative pressure chamber 30 is 1L, 3L, 5L, 8L, or 10L.

[0056] In some embodiments, the negative pressure box 30 generates negative pressure through an air extraction device, so that the air pressure inside the negative pressure box 30 is lower than the external air pressure, thereby enabling the lens 2 to be glued in a negative pressure environment.

[0057] In some embodiments, the negative pressure chamber 30 is connected to an exhaust valve. After the lens 2 is glued to the housing 1, the exhaust valve balances the internal and external pressures, so that the air pressure inside the negative pressure chamber 30 is equal to or close to the external air pressure.

[0058] In some embodiments, the negative pressure chamber 30 has a viewing window 31, which is sealed with a light-transmitting sheet. The viewing window 31 allows the operator to directly observe the gluing process inside the negative pressure chamber 30, improving gluing safety and facilitating recording and acceptance.

[0059] In some embodiments, the light-transmitting sheet is transparent glass or acrylic sheet. In some embodiments, the light-transmitting sheet is located at the top of the negative pressure chamber 30, and there is an angle between the light-transmitting sheet and the horizontal plane. The light-transmitting sheet is tilted at the top of the negative pressure chamber 30, which provides a wider field of view. Under the same vertical projection area, the tilted light-transmitting sheet has a larger area than the horizontally positioned light-transmitting sheet, which is beneficial for the staff to observe and monitor the internal situation of the negative pressure chamber 30 more comprehensively. In addition, the tilted light-transmitting sheet can reduce the reflection effect when external light is incident, making the field of view of the viewing window 31 clearer. For example, the angle between the light-transmitting sheet and the horizontal plane is 15° to 60°, which allows the operator to observe the inside of the negative pressure chamber 30 in a more natural and comfortable posture, reducing neck and eye fatigue, which is in line with ergonomics. When the angle between the light-transmitting sheet and the horizontal plane is less than 15° or greater than 60°, the angle between the light-transmitting sheet and the operator's line of sight is too small, which will affect the operator's field of vision. In some embodiments, the angle between the light-transmitting sheet and the horizontal plane is 15°, 30°, 40°, 50° or 60°.

[0060] In some embodiments, the bottom wall of the inner cavity of the negative pressure box 30 is a plane, on which the housing 1, the lens pickup mechanism 10, and the pressing mechanism 20 are placed. The bottom wall provides stable support, keeping the housing 1, the pressing mechanism 20, and the lens pickup mechanism 10 in a relatively fixed position during assembly. It also provides a unified installation reference, improving the positioning accuracy between the housing 1 and the lens 2 connected to the first positioning part 11, reducing cumulative errors, and ensuring the accuracy of the direction of movement of the pressing mechanism 20 driving the lens pickup mechanism 10. This, in turn, comprehensively improves the positional accuracy and reliability of the lens 2 adhesive bonding.

[0061] In some embodiments, the inner cavity of the negative pressure chamber 30 is shaped as a trapezoid, cuboid, cylinder, or prism, with a regular internal shape, which facilitates the full utilization of the internal space to arrange the housing 1, the picking mechanism 10, and the pressing mechanism 20. Simultaneously, the regular shape of the inner cavity of the negative pressure chamber 30 facilitates the rapid extraction of gas during vacuuming, shortening the time to achieve a negative pressure state and improving adhesive bonding efficiency.

[0062] In some embodiments, combined with Figure 2 , Figure 5 and Figure 6The lens pickup mechanism 10 includes a pressure plate 12 and a separating member 13. The pressure plate 12 is used to drive the separating member 13 to move. The separating member 13 is mounted on the pressure plate 12 and is used to abut and press the lens 2. Compared with the separating member 13, the pressure plate 12 can provide a larger force-bearing area, thereby evenly transmitting the pressing force to the separating member 13. Especially when there are two or more lenses 2 and the separating member 13, it maintains uniform contact and pressing on two or more lenses 2, avoiding shaking, deformation or damage to the lenses 2 due to uneven force application. At the same time, the pressure plate 12 can provide sufficient mounting area to provide stable support for the separating member 13, so that the separating member 13 will not shake or deviate during the movement of the separating member 13 in the direction X from the first positioning part 11 to the housing 1. The force application area of ​​the separating member 13 can be designed to be smaller. On the one hand, the separating member 13 has less impact on the lens when it comes into contact with the lens 2, and can flexibly separate the lens 2 from the first positioning part 11. On the other hand, it is less likely to interfere with other structures during the X-direction movement of the first positioning part 11 to the housing 1.

[0063] In one embodiment, combined Figure 2 , Figure 4 , Figure 6 and Figure 8 The lens pickup mechanism 10 also includes a base 14 and a pickup rod 15. The pickup rod 15 is mounted on the base 14, and one end of the pickup rod 15 is connected to or in contact with the first positioning part 11, thereby achieving accurate positioning and fixing of the lens 2 located on the first positioning part 11, ensuring the stability and reliability of the position of the lens 2 before it is separated, and facilitating the subsequent precise gluing of the lens 2 onto the housing 1.

[0064] In some embodiments, the lens pickup mechanism 10 includes a buffer pad 16, with the bottom of the base 14 connected to the buffer pad 16, and the buffer pad 16 abutting against the housing 1. The buffer pad 16 is located between the base 14 and the housing 1, achieving soft contact between the lens pickup mechanism 10 and the housing 1. The buffer pad 16 absorbs impact forces, preventing damage to the housing 1 during pressing. The buffer pad 16 abutting against the housing 1 avoids the need for connecting holes or other connection structures on the housing 1, thus protecting the integrity and airtightness of the housing 1; it also prevents positional misalignment between the housing 1 and the base 14, improving the alignment accuracy between the lens 2 and the housing 1. The base 14 and the buffer pad 16 surround or partially surround the housing 1, ensuring that the lens 2 is glued to the housing 1 in a relatively enclosed environment, avoiding interference from external structures and airflow.

[0065] In some embodiments, combined with Figure 4The base 14 has a protective cavity 146 at its bottom to accommodate and protect the lens 2. A first positioning part 11 is provided in the protective cavity 146. The protective cavity 146 is a rectangular structure with an open bottom surface. The buffer pad 16 has a through hole in the middle corresponding to the opening of the cavity. The semi-enclosed space formed by the buffer pad 16 and the inner wall of the base 14 covers the housing 1, so that the lens 2 can move along the direction X from the first positioning part 11 to the housing 1 in a relatively independent area until it is glued to the housing 1, which limits the circumferential displacement that may occur when the lens 2 is detached and improves the installation accuracy.

[0066] In some embodiments, combined with Figure 3 and Figure 4 The base 14 has a mirror groove 147 for accommodating the lens 2. The contour of the mirror groove 147 is adapted to the lens 2 to limit the circumferential position of the lens 2, thereby achieving precise positioning of the lens 2 on the base 14. The depth direction of the mirror groove 147 is consistent with the X direction from the first positioning part 11 to the housing 1, guiding the lens 2 to move precisely along the X direction from the first positioning part 11 to the housing 1, improving the adhesive position accuracy of the lens 2 on the housing 1. It can be understood that in other embodiments, the base 14 does not have a mirror groove 147, but instead has a positioning plane, which limits the initial distance between the lens 2 and the housing 1 and the levelness of the lens 2, without limiting the circumferential position of the lens 2.

[0067] In some embodiments, combined with Figure 4 and Figure 8 The base 14 has a first mounting hole 143, which extends through the base 14. The pickup rod 15 is fixedly installed in the first mounting hole 143. The first mounting hole 143 limits the circumferential movement of the pickup rod 15, improving the stability and accuracy of the pickup rod 15 installation. On the other hand, the pickup rod 15 passes through the first mounting hole 143, with one end of the pickup rod 15 passing through the first mounting hole 143 and connecting to the first positioning part 11. The other end of the pickup rod 15 and most of the rod body extend out of the base 14 on the side away from the lens 2, reducing the space occupied by the pickup rod 15 on the side of the base 14 near the lens 2 and the housing 1. This makes the structure of the lens pickup mechanism 10 on the side of the base 14 near the lens 2 simple, and the distance of movement and reset of the pressing mechanism 20 and the pressure plate 12 is shorter, which is beneficial to improving the accuracy and stability of lens 2 bonding. It is understood that in other embodiments, the base 14 may not have the first mounting hole 143. For example, the pickup rod 15 may be fixedly installed on the side of the base 14 near the lens 2, which is not limited here.

[0068] In some embodiments, the base 14 is circumferentially provided with a locking hole 142 communicating with the first mounting hole 143. A fastener abuts against the pickup rod 15 from the outside of the base 14 through the locking hole 142, locking the pickup rod 15 into the first mounting hole 143. Fixing the pickup rod 15 from the outside of the base 14 via the locking hole 142 facilitates the installation and removal of the pickup rod 15 by workers, improving the efficiency and operational flexibility of the installation and removal of the pickup rod 15. Simultaneously, the diameter of the pickup rod 15 does not need to match the diameter of the first mounting hole 143, which helps reduce the machining difficulty of the first mounting hole 143. Each first mounting hole 143 corresponds to at least one locking hole 142, meaning that each first mounting hole 143 corresponds to one, two, or more than two locking holes 142. Figure 8 In the illustrated embodiment, each first mounting hole 143 corresponds to two locking holes 142, which are located on opposite sides of the first mounting hole 143, thereby more securely fixing the pickup rod 15 and facilitating the adjustment of the installation position of the pickup rod 15 in the radial direction of the first mounting hole 143.

[0069] In some embodiments, combined with Figure 5 and Figure 7 The pressure plate 12 has a third guide hole 122 extending along the X direction from the first positioning part 11 to the housing 1, and the pickup rod 15 passes through the third guide hole 122. The third guide hole 122 is provided to guide the pressure plate 12 to move stably along the X direction from the first positioning part 11 to the housing 1 during the pressing process, avoiding deviation or shaking, and improving the accuracy and stability of lens 2 bonding.

[0070] In some embodiments, the lens 2 is detachably connected to the first positioning portion 11. In one embodiment, combined with Figure 4 The first positioning part 11 is a suction cup, and the lens pickup mechanism 10 connects to the lens 2 by adsorbing it through the suction cup. Under negative pressure, the pressure difference between the air pressure in the negative pressure area inside the suction cup and the air pressure inside the negative pressure chamber 30 decreases, weakening the adsorption force between the first positioning part 11 and the lens 2, making it easier for the pressing mechanism 20 to push the lens 2 away from the first positioning part 11. It is understood that in other embodiments, the first positioning part 11 can also be a vacuum pump for vacuum adsorption of the lens 2 or a gripper for holding and adsorbing the lens 2; this is not limited here.

[0071] In some embodiments, combined with Figure 5 , Figure 6 and Figure 8 The base 14 includes a first guide hole 141 extending along the first positioning part 11 to the housing 1 in the X direction, and the separating member 13 passes through the first guide hole 141. The first guide hole 141 guides the separating member 13 and the lens 2 to move stably along the first positioning part 11 to the housing 1 in the X direction during the pressing process, avoiding deviation or shaking, and improving the accuracy and stability of the lens 2 bonding.

[0072] In some embodiments, combined with Figure 6 The separating member 13 is provided with a first limiting step 131, which is located at the end of the separating member 13 away from the base 14. The diameter of the first limiting step 131 is larger than the diameter of the first guide hole 141. When the separating member 13 moves a certain distance along the direction X from the first positioning part 11 to the housing 1 under the push of the pressing mechanism 20, the first limiting step 131 abuts against the end of the first guide hole 141, restricting the separation member 13 and the lens 2 from continuing to move, controlling the movement distance of the lens 2 toward the housing 1, and preventing the lens 2 from continuing to move after abutting against the housing 1, thus preventing the lens 2 from colliding and being damaged by the housing 1. In this way, the first limiting step 131 can control the movement distance of the lens 2 toward the housing 1, ensuring that the lens 2 contacts and is glued to the housing 1 without colliding with the housing 1, and also avoiding excessive pressure that would squeeze out the glue 3 between the lens 2 and the housing 1. In this embodiment, the diameter refers to the line segment connecting two opposite points, and the line segment passes through the center of the cross section. For example, when the cross-section of the hole is circular, the diameter of the circle is the diameter of the hole. When the cross-section of the hole is polygonal, the diameter of the circumcircle of the polygon is the diameter of the hole.

[0073] In one embodiment, combined Figure 6 and Figure 7 The pressure plate 12 has a second mounting hole 124, in which the separator 13 is fixedly installed. The second mounting hole 124 serves two purposes: firstly, it allows for the positioning and installation of the separator 13; secondly, it accommodates the separator 13, reducing the space occupied by the separator 13 on the side of the pressure plate 12 closest to the base 14. This allows for a shorter design between the base 14 and the pressure plate 12, reducing the space occupied and facilitating the miniaturization of the negative pressure box 30. It is understood that in other embodiments, the pressure plate 12 may not have the second mounting hole 124, and the separator 13 may be fixedly installed on the side of the pressure plate 12 closest to the base 14; this is not a limitation here.

[0074] In one embodiment, combined Figure 7 Each pickup lever 15 corresponds to at least one separating element 13, meaning each pickup lever 15 may have one, two, or more than two separating elements 13. When the number of separating elements 13 corresponding to each pickup lever 15 is two or more, the two or more separating elements 13 are distributed circumferentially along the pickup lever 15, uniformly applying a separation force to the lens 2, so that the lens 2 smoothly detaches from the first positioning part 11, reducing the offset or shaking that occurs during the separation process between the lens 2 and the pickup lever 15. Figure 7 In the illustrated embodiment, each pickup bar 15 corresponds to four separation members 13, which are distributed circumferentially along the pickup bar 15. These separation members 13 can apply a uniform pushing force to the four corners of the lens 2, so that the lens 2 can be smoothly separated from the pickup bar 15.

[0075] In some embodiments, combined with Figure 4 and Figure 6 The lens pickup mechanism 10 also includes an elastic reset member 17, which is disposed between the pressure plate 12 and the base 14. The elastic reset member 17 serves two purposes: firstly, it enables the pressure plate 12 to automatically reset, improving automation and increasing gluing efficiency and stability; secondly, it acts as a buffer, preventing the pressure plate 12 from directly contacting the base 14, and facilitating the relatively uniform movement of the pressure plate 12 and the lens 2 along the direction X from the first positioning part 11 to the housing 1, thus preventing impact between the lens 2 and the housing 1.

[0076] In some embodiments, combined with Figure 6 The picking mechanism 10 also includes a mounting rod 171, which is mounted on the base 14 or the pressure plate 12. The elastic reset member 17 is movably sleeved on the mounting rod 171 to achieve circumferential limiting of the elastic reset member 17, ensuring the positional stability of the elastic reset member 17, and making the position of the elastic force on the pressure plate 12 stable.

[0077] In some embodiments, one of the base 14 and the pressure plate 12 has a third mounting hole 144, and the other has a fourth guide hole 123. One end of the mounting rod 171 is fixedly installed in the third mounting hole 144, and the other end of the mounting rod 171 extends into the fourth guide hole 123. The fourth guide hole 123 provides a guiding fit between the pressure plate 12 and the mounting rod 171, guiding the pressure plate 12 to move stably along the X direction from the first positioning part 11 to the housing 1 during the pressing process, avoiding deviation or shaking. Figure 7 and Figure 8 In the illustrated embodiment, the base 14 has a third mounting hole 144 and the pressure plate 12 has a fourth guide hole 123. It is understood that in other embodiments, the pressure plate 12 has a third mounting hole 144 and the base 14 has a fourth guide hole 123, and this is not a unique limitation.

[0078] In some embodiments, the elastic reset member 17 is a spring or a rubber pad, and may also be other components with elastic functions, which are not limited here. In some embodiments, the number of elastic reset members 17 is one, two, or more than two. When the number of elastic reset members 17 is two or more, the two or more elastic reset members 17 are distributed circumferentially around the pressure plate 12 to apply a reset force evenly to the pressure plate 12 in a circumferential direction, preventing the pressure plate 12 from shifting or shaking during the pressing process. Figure 7 In the illustrated embodiment, there are four elastic reset members 17. The four elastic reset members 17 are distributed circumferentially along the pressure plate 12, which can uniformly apply a reset force to the four corners of the pressure plate 12, so that the pressure plate 12 is subjected to force more stably and moves more stably.

[0079] In some embodiments, combined with Figure 6 , Figure 7 and Figure 8 The lens pickup mechanism 10 also includes a guide rod 18, which is mounted on the base 14. The pressure plate 12 has a second guide hole 121, through which the guide rod 18 passes. The second guide hole 121 guides and engages with the pressure plate 12, guiding the pressure plate 12 to move stably along the X direction from the first positioning part 11 to the housing 1, avoiding deviation or shaking, and improving the accuracy and stability of lens 2 bonding.

[0080] In some embodiments, the guide rod 18 is provided with a second limiting step 181, which is located at the end of the guide rod 18 near the pressure plate 12. The diameter of the second limiting step 181 is larger than the diameter of the second guide hole 121. When the pressure plate 12 moves a certain distance away from the base 14, the second limiting step 181 will abut against the end of the second guide hole 121, restricting the pressure plate 12 from moving further. In this way, the second limiting step 181 can control the reset movement distance of the pressure plate 12, avoiding the pressure plate 12 moving too far away from the base 14, which would result in an excessively long separation distance and reduced gluing efficiency. At the same time, it eliminates the need for sensors or other detection methods to determine whether the pressure plate 12 has been reset, reducing the space occupied by sensors in the negative pressure box 30 and thus reducing the volume of the negative pressure box 30.

[0081] In some embodiments, the second guide hole 121 is a countersunk hole to prevent the guide rod 18 from being exposed, thus making the structure of the side of the pressure plate 12 away from the base 14 simple.

[0082] In some embodiments, the number of guide rods 18 is one, two, or more than two. When the number of guide rods 18 is two or more, the two or more guide rods 18 are distributed circumferentially at intervals along the pressure plate 12 to uniformly guide the movement of the pressure plate 12 circumferentially. Figure 7 In the illustrated embodiment, there are two guide rods 18, which are symmetrically distributed about the center of the pressure plate 12, making the movement of the pressure plate 12 more stable.

[0083] In some embodiments, the base 14 has a fourth mounting hole 145, and the guide rod 18 is mounted in the fourth mounting hole 145. Based on this, on the one hand, the connection area between the guide rod 18 and the base 14 is increased, improving the stability and installation accuracy of the guide rod 18; on the other hand, the guide rod 18 is partially accommodated in the fourth mounting hole 145, reducing the space occupied by the guide rod 18 between the pressure plate 12 and the base 14, so that the distance between the substrate and the pressure plate 12 can be shortened, which is beneficial to the miniaturization of the pickup mechanism 10 and the negative pressure box 30.

[0084] In some embodiments, combined with Figure 4The number of first positioning parts 11 is one, two, or more. In one embodiment, the number of first positioning parts 11 is consistent with the number of lenses 2 required on the housing 1, thereby allowing all lenses 2 on the housing 1 to be glued at one time, which greatly improves assembly efficiency.

[0085] In some embodiments, combined with Figure 2 and Figure 3 The pressing mechanism 20 includes a bracket 21, a driving member 22, and a pressing member 23. The driving member 22 is mounted on the bracket 21 and drives the pressing member 23. The pressing member 23 is connected to the driving member 22 and pushes the pressure plate 12 to move along the direction X from the first positioning part 11 to the housing 1. The driving member 22 can be stably mounted in the negative pressure box 30 via the bracket 21. Furthermore, the pressing mechanism 20 has fewer components and is simple to assemble. The driving member 22 enables automatic pressing, improving assembly efficiency and stability.

[0086] In some embodiments, combined with Figure 3 The driving member 22 has a fifth guide hole 221, which extends along the direction X from the first positioning part 11 to the housing 1. The pressing member 23 is movably installed in the fifth guide hole 221. The fifth guide hole 221 guides the pressing member 23 to move stably along the direction X from the first positioning part 11 to the housing 1, avoiding deviation or shaking, and improving the accuracy and stability of lens 2 bonding.

[0087] In some embodiments, the pressing member 23 is a pressing plate. The plate structure is simple, occupies little space, and has a large contact area with the pressure plate 12, which helps to stably transmit the thrust. In addition, the pressing member 23 has a symmetrical structure, which facilitates uniform force application.

[0088] In some embodiments, combined with Figure 3 The pressing member 23 includes a receiving through hole 231. Projected along the direction X from the first positioning part 11 to the housing 1, the separating member 13 is located in the receiving through hole 231. The receiving through hole 231 allows the pressing member 23 to avoid structures such as the pickup rod 15 protruding from the pressure plate 12 near the surface of the pressing member 23 during movement, thus preventing the movement path of the pressing member 23 from interfering with the positions of other structural components.

[0089] In some embodiments, combined with Figure 3 The pressing member 23 has a notch 232, which is located on the edge of the pressing member 23 away from the bracket 21 and communicates with the receiving through hole 231. This allows the picking mechanism 10 to be horizontally inserted into the receiving through hole 231 through the notch 232, reducing the difficulty of assembling and aligning the pressing mechanism 20 and the picking mechanism 10, and improving assembly efficiency.

[0090] In some embodiments, combined with Figure 3The lens mounting fixture also includes a positioning carrier 41 and a mounting base 42. The positioning carrier 41 is fixed to the mounting base 42 and is used to place the housing 1, facilitating accurate placement of the housing 1, reducing installation errors, and improving the precision of the mounting position. The positioning carrier 41 also protects the housing 1 from accidental impacts, scratches, or other external forces. Furthermore, the positioning carrier 41 is compatible with the housing 1, and the housing 1 is positioned and fixed to the mounting base 42 by the positioning carrier 41, improving the versatility of the mounting base 42.

[0091] In some embodiments, the positioning carrier 41 includes a second positioning part 411, which further improves the placement accuracy of the housing 1. For example, the second positioning part 411 is a positioning groove provided in the positioning carrier 41 to limit the circumferential position of the housing 1.

[0092] In some embodiments, the positioning carrier 41 also has an operation slot 412, which is connected to the second positioning part 411, so that the operator can take the housing 1 out through the operation slot 412, thereby shortening the assembly and disassembly time of the housing 1 and improving the assembly efficiency.

[0093] In one embodiment, combined Figure 2 The lens pickup mechanism 10 is placed in the direction perpendicular to the housing 1, so that the direction X from the first positioning part 11 to the housing 1 is consistent with the vertical direction, which is beneficial for the lens 2 to move accurately along the direction X from the first positioning part 11 to the housing 1 under the action of gravity during separation and movement.

[0094] In one embodiment, combined Figure 2 The pressing mechanism 20 is connected to the mounting base 42 via the bracket 21. The housing 1 is positioned and assembled onto the mounting base 42 via the positioning carrier 41. The housing 1 is based on the mounting base 42, and the thrust applied by the pressing mechanism 20 is also based on the mounting base 42. Regardless of whether the mounting base 42 is precisely positioned within the negative pressure box 30, the mounting base 42 provides a unified mounting reference, improving the relative accuracy between the housing 1 and the lens 2 connected to the first positioning part 11, ensuring the accuracy of the direction in which the pressing mechanism 20 drives the lens pickup mechanism 10, and thus comprehensively improving the accuracy and reliability of the lens 2's adhesive bonding position.

[0095] In some embodiments, combined with Figure 3The lens mounting fixture also includes a wireless communication module 43, which is electrically connected to the pressing mechanism 20. The wireless communication module 43 receives external control commands and controls the pressing mechanism 20 accordingly. Compared to controlling the pressing mechanism 20 via wires and data cables, wireless communication eliminates the need for openings in the negative pressure box 30, improving its airtightness. Furthermore, the wireless communication module 43 enables remote control, reducing manual operation and improving the safety of the assembly process. In some embodiments, the wireless communication module 43 is a Bluetooth module, an infrared communication module, or a WiFi module; no specific limitation is made here.

[0096] Example 2

[0097] Combination Figure 10 This application provides a lens binding method, applied to a lens binding fixture according to any of the above-mentioned methods, the method comprising the following steps:

[0098] S100: Place the glued housing 1 into the negative pressure chamber 30, and position the lens 2 in the first positioning part 11 of the lens pickup mechanism 10. The lens pickup mechanism 10 is located inside the negative pressure chamber 30.

[0099] S200: Adjust the air pressure inside the negative pressure box 30 to a first preset air pressure value, which is less than the air pressure outside the negative pressure box 30.

[0100] S300: Operate the pressing mechanism 20 located in the negative pressure box 30 so that the pressing mechanism 20 pushes the lens 2 to separate from the first positioning part 11 and presses the lens 2 onto the housing 1.

[0101] S400: Adjust the air pressure in the negative pressure box 30 to the second preset air pressure value, which is greater than the first preset air pressure value.

[0102] Lens 2 is glued to housing 1 under negative pressure, preventing the extrusion of air from inside housing 1 and thus avoiding glue overflow caused by airflow. This improves the airtightness between lens 2 and housing 1, increases the yield rate of glued products, and eliminates the need for manual wiping and touch-up after glue overflow. Furthermore, the use of a pressing mechanism 20 automates the assembly of lens 2 and housing 1, shortening the lens 2 gluing time, effectively improving gluing efficiency, and avoiding lens contamination caused by manual operation.

[0103] In some embodiments, the first preset air pressure value is less than or equal to 70% of the external air pressure of the negative pressure chamber. According to the ideal gas law, PV = nRT, where P is pressure, V is gas volume, T is temperature, n is the amount of substance of the gas, and R is the molar gas constant. Since the internal volume of the negative pressure chamber 30 is constant, that is, the gas volume V inside the negative pressure chamber 30 remains unchanged, extracting at least 30% of the gas inside the negative pressure chamber 30 can reduce the air pressure inside the negative pressure chamber 30 to reach the first preset air pressure value. Under negative pressure, when the lens 2 is installed on the housing 1 by pressing, the glue 3 applied to the housing 1 will not overflow due to the compression of the gas inside the housing 1, thus improving the airtightness of the glue.

[0104] In one embodiment, the first preset air pressure value is less than or equal to 10% of the external air pressure value, thereby reducing the amount of air pumped, saving time, and improving assembly efficiency. In some embodiments, the first preset air pressure value is less than or equal to 10%, 30%, 50%, 60%, or 70% of the external air pressure value.

[0105] In one embodiment, the second preset air pressure value is greater than or equal to 120% of the first preset air pressure value. In one embodiment, the second preset air pressure value is greater than or equal to 90% of the external air pressure value. In some embodiments, the second preset air pressure value is less than or equal to 90%, 100%, 110%, or 120% of the external air pressure value.

[0106] In one embodiment, the pressing mechanism 20 is operated wirelessly via remote control. This design reduces the number of openings on the negative pressure box 30 for the passage of sensor wires and data cables, improves the airtightness of the negative pressure box 30, and solves the safety issues associated with time-limited installation. Simultaneously, the use of the wireless communication module 43 enables communication with various communication devices, allowing operators to flexibly choose to send control commands via mobile phone, remote control, computer, or server, thus improving operational convenience.

[0107] In one embodiment, in step S300, the pressing mechanism 20 presses the lens 2 onto the housing 1 and holds it for 3s to 10s so that the lens 2 is in full contact with the adhesive 3, which can ensure that a tighter bond is formed between the lens 2 and the housing 1, thereby improving the sealing performance.

[0108] In some embodiments, after step S400, step S500 is further included: operating the pressing mechanism 20 to move the pressing mechanism 20 along the direction from the housing 1 to the first positioning part 11. This resets the pressing mechanism 20, facilitating the next pressing operation and subsequent removal of the fully glued housing 1 and lens 2.

[0109] In some embodiments, the pressing mechanism 20 automatically resets after the external force is removed, which improves the automation level of the lens bonding method, reduces the number of reset operations performed by staff, and effectively improves bonding efficiency.

[0110] In some embodiments, after step S500, step S600 is further included: removing the glued housing 1 and lens 2 from the negative pressure chamber 30. The glued housing 1 and lens 2 are then removed for an airtightness test, while the next glued housing 1 is placed in the negative pressure chamber 30, and the next set of lenses 2 to be assembled is positioned and installed in the first positioning part 11. This enables continuous operation and improves glued bonding efficiency.

[0111] The technical solution of Embodiment 2 also includes any of the technical solutions in Embodiment 1, which will not be described in detail here. The technical solution in Embodiment 1 may also include any of the technical solutions in Embodiment 2, which will not be described in detail here.

[0112] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A lens binding fixture, characterized in that, The lens mounting fixture includes: A lens pickup mechanism, the lens pickup mechanism including a first positioning part, the first positioning part being used to connect with a lens; A pressing mechanism is used to push the piece-picking mechanism to move along the direction from the first positioning part to the housing; A negative pressure chamber, wherein the housing, the pressing mechanism, and the picking mechanism are all disposed within the negative pressure chamber; The lens mounting fixture is manufactured by a lens mounting method, which includes the following steps: The glued housing is placed inside the negative pressure chamber, and the lens is positioned and installed in the first positioning part of the lens pickup mechanism; wherein, the lens pickup mechanism is located inside the negative pressure chamber; The air pressure inside the negative pressure box is adjusted to a first preset air pressure value, which is less than the air pressure outside the negative pressure box. Operate the pressing mechanism located inside the negative pressure box to push the lens away from the first positioning part and press the lens onto the housing; The air pressure in the negative pressure box is adjusted to a second preset air pressure value, which is greater than the first preset air pressure value.

2. The lens mounting fixture according to claim 1, characterized in that: The lens pickup mechanism also includes a pressure plate and a separating component. The pressure plate is used to drive the separating component to move. The separating component is installed on the pressure plate and is used to abut and press the lens.

3. The lens mounting fixture according to claim 2, characterized in that: The pickup mechanism includes a base, a pickup rod, and a buffer pad. The pickup rod is mounted on the base, and one end of the pickup rod is connected to or in contact with the first positioning part. The bottom of the base is connected to the buffer pad, and the buffer pad abuts against the housing.

4. The lens mounting fixture according to claim 3, characterized in that, The base includes a first guide hole extending along the first positioning part to the housing, and the separating member passes through the first guide hole; the separating member is provided with a first limiting step, the first limiting step is located at the end of the separating member away from the base, and the diameter of the first limiting step is larger than the diameter of the first guide hole.

5. The lens mounting fixture according to claim 3, characterized in that, The piece-picking mechanism also includes: An elastic reset element is disposed between the pressure plate and the base; Alternatively, a guide rod is installed on the base, the pressure plate has a second guide hole, and the guide rod passes through the second guide hole; the guide rod is provided with a second limiting step, the second limiting step is located at the end of the guide rod near the pressure plate, and the diameter of the second limiting step is larger than the diameter of the second guide hole.

6. The lens mounting fixture according to claim 2, characterized in that: The pressing mechanism includes a bracket, a driving component, and a pressing component; The driving component is mounted on the bracket and is used to drive the pressing component; The pressing member is connected to the driving member, and the pressing member is used to push the pressure plate to move along the direction from the first positioning part to the housing.

7. The lens mounting fixture according to claim 6, characterized in that: The lens mounting fixture also includes a positioning carrier and a mounting base. The positioning carrier is fixed to the mounting base and is used to place the housing. The pickup mechanism is positioned perpendicular to the housing, and the pressing mechanism is connected to the mounting base via the bracket.

8. The lens mounting fixture according to any one of claims 1 to 7, characterized in that: The lens mounting fixture also includes a wireless communication module, which is electrically connected to the pressing mechanism. The wireless communication module is used to receive external control commands and control the pressing mechanism.

9. A lens bonding method, applied to the lens bonding fixture according to any one of claims 1 to 8, characterized in that, The method includes the following steps: The glued housing is placed inside the negative pressure chamber, and the lens is positioned and installed in the first positioning part of the lens pickup mechanism; wherein, the lens pickup mechanism is located inside the negative pressure chamber; The air pressure inside the negative pressure box is adjusted to a first preset air pressure value, which is less than the air pressure outside the negative pressure box. Operate the pressing mechanism located inside the negative pressure box to push the lens away from the first positioning part and press the lens onto the housing; The air pressure in the negative pressure box is adjusted to a second preset air pressure value, which is greater than the first preset air pressure value.

10. The lens mounting method according to claim 9, characterized in that: The pressing mechanism is operated by wireless remote control.

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