Lens module roll riveting equipment, lens module roll riveting method and lens module

Abstract

The invention relates to a lens module roll riveting device, a lens module roll riveting method and a lens module. The lens module roll riveting equipment comprises an equipment platform; the pressing jig is rotatably arranged on the equipment platform and is used for pressing a shell of the lens module and a lens main body of the lens module to form a pre-assembling assembly; the rolling riveting jigs are circumferentially arranged on the periphery of the pressing jig at intervals, each rolling riveting jig comprises a rolling riveting assembly and an adjusting assembly, and the adjusting assemblies are fixedly arranged on the equipment platform and adjustably connected to the rolling riveting assemblies so as to adjust the distance between the centers of the rolling riveting assemblies and the centers of the pressing jigs; and the driving assembly is in driving connection with the pressing jig or the equipment platform and is used for driving the pressing jig to rotate forwards or reversely relative to the equipment platform so as to drive the roll riveting assembly to rotate relative to the preassembling assembly, so that the roll riveting assembly rivets the roll riveting ribs of the shell into the roll riveting groove of the lens main body in a rolling manner.

Description

Technical Field

[0001] The present invention relates to the technical field of camera modules, and in particular to a lens module rolling riveting device, a lens module rolling riveting method and a lens module. Background Art

[0002] With the rapid development of camera technology, the market for camera modules is shrinking, and cost reduction and efficiency improvement of camera modules have become more important. Based on this, in order to reduce the manufacturing cost of camera modules, it is necessary to design low-cost solutions and develop new processes for camera modules, and to achieve cost reduction and efficiency improvement by optimizing the assembly method of the lens module of the camera module.

[0003] The existing lens module generally includes a lens, a locking ring, a sealing ring, a shell and glue. With the glue, the locking ring is riveted to the lens body to fix the lens body and the shell. This lens module solution has a high material cost, and the locking ring usually adopts a riveting process. During the riveting, there is sliding friction between the riveting head and the surface of the rolling rivet rib. After sliding, the rolling rivet rib is easily worn, and debris and burrs appear. Such burrs and debris fall onto the surface of components during the subsequent module power-on operation, posing a risk of short circuit, which has a high risk of hidden dangers. In addition, since the riveting solution is to press the end of the rivet rib into the rolling rivet groove, there is a gap between the lens body and the shell, which cannot be fully fitted, affecting the combination of the lens body and the shell. Summary of the invention

[0004] Based on this, it is necessary to provide a lens module rolling riveting device, a lens module rolling riveting method and a lens module to address the problem of burrs and debris generated by sliding friction in the existing riveting method of the lens module.

[0005] A lens module rolling riveting device, comprising:

[0006] Device platform;

[0007] A pressing jig, which is rotatably disposed on the equipment platform and is used to press the housing of the lens module and the lens body of the lens module to form a pre-assembled assembly;

[0008] a plurality of rolling rivet jigs, the rolling rivet jigs being arranged circumferentially around the pressing jig at intervals, the rolling rivet jig comprising a rolling rivet assembly and an adjusting assembly, the adjusting assembly being fixed to the equipment platform and adjustably connected to the rolling rivet assembly to adjust the distance between the rolling rivet assembly and the center of the pressing jig; and

[0009] A driving assembly is drivingly connected to the clamping jig or the equipment platform, and is used to drive the clamping jig to rotate forward or reverse relative to the equipment platform, so as to drive the rolling rivet assembly to rotate relative to the pre-assembled assembly, so that the rolling rivet assembly roll-rivets the rivet rib of the shell into the rolling rivet groove of the lens body.

[0010] In one embodiment, the adjustment component includes a fixing part, an adjustment part, a reset part and a matching part fixed to the equipment platform, the matching part is fixed to the fixing part, the rolling rivet assembly is slidably connected to the fixing part, the reset part is arranged between the rolling rivet assembly and the fixing part so that the adjustment part abuts against the rolling rivet assembly, and the adjustment part is threadedly engaged with the matching part to push the rolling rivet assembly close to the center of the clamping fixture when rotating.

[0011] In one embodiment, the surfaces of the adjusting member and the matching member have scales, and the scales are used to display the adjustment distance of the adjusting member.

[0012] In one of the embodiments, the rolling riveting assembly includes a connecting member slidably connected to the fixing member along the radial direction of the clamping jig and a rolling riveting member rotatably connected to the connecting member, and the adjusting member abuts against the connecting member.

[0013] In one of the embodiments, the rolling rivet jig further includes at least one self-locking component, which is disposed between the rolling rivet component and the equipment platform and is used to limit the rolling rivet component from sliding away from the rolling rivet component in a self-locking state.

[0014] In one embodiment, the self-locking component includes a fixed block, a self-locking slider, an elastic member and a limit member, the fixed block is fixed to the equipment platform, the limit member is fixed to the rolling riveting assembly, the fixed block has a slide groove, the self-locking slider can be slidably set in the slide groove, and the elastic member is set between the self-locking slider and the fixed block so that the self-locking slider abuts against the limit member.

[0015] In one embodiment, the clamping fixture includes a rotating member rotatably disposed on the device platform and a plurality of clamping members, the rotating member having a mounting groove for mounting the shell and the lens body, and the clamping member being detachably mounted around the mounting groove for clamping the shell and the lens body to form a pre-assembled assembly.

[0016] A lens module rolling riveting method, used for assembling a lens module by using any of the lens module rolling riveting devices described above, comprises the following steps:

[0017] The lens body of the lens module and the housing of the lens module are pressed together by a pressing jig to obtain a pre-assembled assembly;

[0018] According to the set feed amount, adjust the adjustment component to move the rolling riveting component to the rolling position;

[0019] The pressing jig or the equipment platform is driven to rotate by the driving assembly, so as to drive the rolling rivet assembly to rotate relative to the pre-installed assembly, so that the rolling rivet assembly rolls and rivets the rolling rivet rib of the housing into the rolling rivet groove of the lens body; and

[0020] The adjusting component is adjusted to move the rolling riveting component to the initial position, and the pre-assembled component after rolling riveting is removed to obtain an assembled lens module.

[0021] In one embodiment, the step of driving the pressing jig or the equipment platform to rotate by a driving assembly to drive the rolling rivet assembly to rotate relative to the pre-assembled assembly so that the rolling rivet assembly rolls and rivets the rolling rivet rib of the shell into the rolling rivet groove of the lens body comprises the following steps:

[0022] By means of a driving assembly, the pressing fixture is driven to rotate forwardly at a set angle or the equipment platform is driven to rotate backwardly at a set angle, so as to drive the rolling rivet assembly to rotate forwardly relative to the pre-installed assembly, so that the rolling rivet assembly will reversely roll the rolling rivet rib of the shell; and

[0023] The pressing fixture is driven to rotate in the reverse direction by the set angle or the equipment platform is driven to rotate in the forward direction by the set angle through the driving assembly, so as to drive the riveting assembly to rotate in the reverse direction relative to the pre-installed assembly, so that the riveting assembly can roll the riveting ribs of the shell in the forward direction.

[0024] A lens module, comprising:

[0025] A lens body, wherein the lens body has a rolling rivet groove;

[0026] A housing, wherein the housing has a rolling rivet rib, the rolling rivet rib is covered in the rolling rivet groove, and the housing is riveted to the lens body by any of the above-mentioned lens module rolling riveting methods; and

[0027] A sealing member is disposed between the lens body and the housing.

[0028] Compared with the existing lens modules with locking ring structures, the lens module of the present application optimizes the structure of the locking ring, does not need to use glue, has fewer materials in the overall solution, and has lower material costs, which can effectively reduce production costs. The lens module rolling riveting equipment of the present application can utilize the rolling riveting ribs of the lens module to produce plastic deformation, which can make the shell rolling riveting ribs and the lens body fit more closely, and by converting sliding friction into rolling friction, it can avoid the occurrence of problems such as debris or burrs, and solve the short-circuit problem caused by burrs and debris from the root. The lens module rolling riveting method of the present application can reduce stress more effectively and can reduce the impact of stress on the lens optical system. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of the structure of a lens module provided in one embodiment of the present application;

[0030] Figure 2 An enlarged schematic diagram of a roll riveting groove of a lens module according to the above embodiment of the present application is shown;

[0031] Figure 3 A schematic top view of a roll riveting groove of a lens module according to the above embodiment of the present application is shown;

[0032] Figure 4 A schematic top view of a lens module rolling riveting device provided in one embodiment of the present application;

[0033] Figure 5 A schematic diagram of riveting for a lens module riveting device according to the above embodiment of the present application is shown;

[0034] Figure 6 A schematic diagram of the steps of a lens module rolling riveting method provided in one embodiment of the present application;

[0035] Figure 7 A schematic diagram showing step S300 of the lens module rolling riveting method according to the above embodiment of the present application is shown;

[0036] Fig. 8A A schematic structural diagram of a lens module in step S100 of the lens module rolling riveting method according to the above embodiment of the present application is shown;

[0037] Figure 8B A schematic structural diagram of a lens module in step S200 of the lens module rolling riveting method according to the above embodiment of the present application is shown;

[0038] Figure 8C A schematic diagram of the structure of the lens module in step S310 of the lens module rolling riveting method according to the above embodiment of the present application is shown;

[0039] Fig.8DA schematic diagram of the structure of the lens module in step S320 of the lens module rolling riveting method according to the above embodiment of the present application is shown;

[0040] Fig. 8E A schematic structural diagram of a lens module in step S400 of the lens module rolling riveting method according to the above embodiment of the present application is shown;

[0041] Fig. 9 A contour map of the CAE simulation of the lens module rolling riveting method according to the above embodiment of the present application is shown.

[0042] : 10, equipment platform; 20, clamping fixture; 21, rotating part; 22, clamping part; 30, riveting fixture; 31, riveting assembly; 311, connecting part; 312, riveting part; 32, adjusting assembly; 321, fixing part; 322, adjusting part; 323, matching part; 33, self-locking assembly; 331, fixing block; 332, self-locking slider; 3321, first guide surface; 333, elastic part; 334, limiting part; 3341, second guide surface; 40, lens module; 41, lens body; 411, riveting groove; 412, sealing groove; 42, shell; 421, riveting rib; 43, sealing part. DETAILED DESCRIPTION

[0043] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0044] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0048] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0049] Based on the problem of burrs and debris generated by sliding friction in the current compression riveting method of the lens module, the present application provides a lens module rolling riveting device, a lens module rolling riveting method and a lens module.

[0050] For details, please refer to Figure 1 , Figure 2 and Figure 3The lens module 40 provided in the present application may include a lens body 41, a shell 42 and a seal 43. The lens body 41 is provided with a rivet groove 411, and the shell 42 has a rivet rib 421. The rivet rib 421 is covered in the rivet groove 411. The shell 42 is riveted to the lens body 41 by the lens module rivet method provided in the present application. The seal 43 is arranged between the lens body 41 and the shell 42 to seal the gap between the lens body 41 and the shell 42.

[0051] It is understandable that the lens module 40 of the present application optimizes the structure of the locking ring compared to the existing lens module 40 with a locking ring structure, does not need to use glue, has fewer materials in the overall solution, has lower material costs, and can effectively reduce production costs. In addition, the roll rivet rib 421 of the shell 42 of the lens module 40 of the present application covers the roll rivet groove 411, and the roll rivet rib 421 is plastically deformed by the roll riveting process and riveted into the roll rivet groove 411. The roll rivet rib 421 and the roll rivet groove 411 can produce a tight fit, avoiding the problem of a gap between the outer surface of the lens body 41 and the inner surface of the shell 42 after being fitted, thereby improving the compatibility of the lens body 41 and the shell 42.

[0052] Alternatively, if Figure 1 As shown, in some embodiments, the housing 42 is provided with a sealing groove 412, and the sealing member 43 is disposed in the sealing groove 412. By squeezing the sealing member 43 between the lens body 41 and the housing 42, the sealing member 43 can seal the gap between the lens body 41 and the housing 42. The sealing member 43 can be implemented as an O-ring.

[0053] Preferably, if Figure 2 As shown, in some embodiments, the bottom of the rivet groove 411 of the lens body 41 is arc-shaped, the groove wall of the rivet groove 411 is tangent to the groove bottom, and the groove wall of the rivet groove 411 and the side wall of the lens body 41 are connected by a round chamfer transition.

[0054] For details, please refer to Figure 4 and Figure 5The present application also provides a lens module riveting device, which may include an equipment platform 10, a clamping jig 20, a plurality of riveting jigs 30 and a driving assembly. The clamping jig 20 is rotatably arranged on the equipment platform 10. The clamping jig 20 can be used to clamp the housing 42 of the lens module 40 and the lens body 41 of the lens module 40, so that the lens body 41 and the housing 42 form a pre-assembled assembly for subsequent riveting operations. The riveting jigs 30 are arranged circumferentially around the clamping jig 20 at intervals, and are used to rivet the riveting ribs 421 of the housing 42. The riveting jig 30 includes a riveting assembly 31 and an adjusting assembly 32. The adjusting assembly 32 is fixed to the equipment platform 10 and is adjustably connected to the riveting assembly 31. By adjusting the adjusting assembly 32, the distance between the center of the riveting assembly 31 and the clamping jig 20 can be adjusted to control the feed amount of the riveting assembly 31. The driving assembly is drivingly connected to the clamping fixture 20 or the equipment platform 10 to drive the clamping fixture 20 to rotate forward or reversely, so as to drive the rivet assembly 31 to rotate relative to the pre-assembled assembly, so that the rivet assembly 31 rolls and rivets the rivet rib 421 of the shell 42 into the rivet groove 411 of the lens body 41.

[0055] It is understandable that when the lens module rolling riveting device is used to assemble the lens module 40, the pressing fixture 20 or the equipment platform 10 is driven to rotate by the driving assembly to drive the rolling riveting assembly 31 to rotate relative to the pre-assembled assembly composed of the lens body 41 and the shell 42, so that the rolling riveting assembly 31 squeezes the rolling riveting rib 421 and produces plastic deformation, thereby riveting the rolling riveting rib 421 into the rolling riveting groove 411, thereby fixing the shell 42 to the lens body 41. The rolling riveting process is a rolling plastic deformation method that can make the rolling riveting rib 421 of the shell 42 and the lens body 41 fit more closely. Compared with the traditional pressure riveting process, the rolling riveting process converts sliding friction into rolling friction, thereby avoiding problems such as debris or burrs, and solves the short circuit problem caused by burrs and debris from the root.

[0056] Optionally, in some embodiments, the driving assembly may be implemented as a stepping motor so as to more accurately control the rotation angle of the device platform 10 or the pressing fixture 20 .

[0057] More specifically, if Figure 4As shown, in some embodiments, the adjustment component 32 includes a fixing member 321, an adjustment member 322, a reset member and a matching member 323, the fixing member 321 is fixed to the equipment platform 10, the matching member 323 is fixed to the fixing member 321, the rolling rivet assembly 31 is slidably connected to the fixing member 321, the reset member is arranged between the rolling rivet assembly 31 and the fixing member 321, so that the adjustment member 322 abuts against the rolling rivet assembly 31, the adjustment member 322 is threadedly matched with the matching member 323, and when the adjustment member 322 is rotated, the adjustment member 322 can slide along the axial direction of the threaded hole. The rolling rivet assembly 31 is slidably connected to the fixing member 321, and the adjustment member 322 abuts against the rolling rivet assembly 31 to push the rolling rivet assembly 31 close to the center of the clamping fixture 20 when rotating. In this way, by controlling the rotation angle of the adjusting member 322 , the sliding distance of the rolling rivet assembly 31 can be controlled, thereby more accurately controlling the feed amount of the rolling rivet assembly 31 .

[0058] Preferably, if Figure 4 As shown, in some embodiments, the surfaces of the mating piece 323 and the adjusting piece 322 have scales, and the scales are used to display the adjustment distance of the adjusting piece 322. By reading the scales on the surfaces of the mating piece 323 and the adjusting piece 322, the sliding distance of the rolling rivet assembly 31 can be more intuitively observed, thereby obtaining more accurate feed amount information.

[0059] For example, in one embodiment, the adjustment component 32 can be improved from a micrometer, wherein the scale on the matching part 323 is a fixed scale of the micrometer, and the scale on the adjustment part 322 is a movable scale of the micrometer. The feed amount of the rolling rivet assembly 31 can be read according to the reading method of the micrometer, so that the feed amount can be accurately read to 0.01 mm.

[0060] Furthermore, if Figure 4 As shown, in some embodiments, the rolling rivet assembly 31 includes a connecting member 311 and a rolling rivet member 312. The connecting member 311 can be slidably connected to the fixing member 321 along the radial direction of the pressing jig 20. The rolling rivet member 312 can be rotatably connected to the connecting member 311. The adjusting member 322 abuts against the connecting member 311. When the adjusting member 322 rotates, the adjusting member 322 can push the connecting member 311 to slide along the radial direction of the pressing jig 20. The rolling rivet member 312 is used to roll the rivet rib 421 of the housing 42. When the rolling rivet jig 30 and the pre-assembled assembly rotate relative to each other, the rolling rivet member 312 is driven by the rivet rib 421 of the housing 42 to rotate relative to the connecting member 311, so that rolling friction is generated between the rivet rib 421 and the rolling rivet member 312, thereby completely solving the problem of debris generated during the assembly process.

[0061] It can be understood that the thickness of the rivet component 312 gradually increases from the outer periphery to the center to form a rivet surface, through which the rivet component 312 can squeeze the rivet rib 421 of the shell during rotation, causing the rivet rib 421 to deform and rivet into the rivet groove 411 of the lens body 41.

[0062] For example, Figure 5 As shown, in some embodiments, the roll rivet 312 can be implemented as a pulley or a ball.

[0063] Optionally, in some embodiments, a plurality of the rolling rivet jigs 30 are symmetrically arranged on the equipment platform 10 around the center of the pressing jig 20, and the number of the rolling rivet jigs 30 is the same as the number of the rolling rivet ribs 421 of the housing 42. Such an arrangement can make the force on the housing 42 more uniform, and the torsion force on each rolling rivet rib 421 is the same.

[0064] Preferably, if Figure 4 As shown, in one embodiment, the number of the rolling rivet jigs 30 is two, and the two rolling rivet jigs 30 are symmetrically arranged on both sides of the pressing jig 20 .

[0065] Furthermore, if Figure 4 As shown, in some embodiments, the roll rivet jig 30 further includes at least one self-locking component 33, which is disposed between the roll rivet assembly 31 and the equipment platform 10, and is used to limit the roll rivet assembly 31 from sliding away from the roll rivet assembly 31 in a self-locking state. In this way, the roll rivet assembly 31 can be restricted to an open state by the self-locking component 33, so that the lens body 41 and the housing 42 can be quickly loaded into the clamping jig 20, avoiding interference of the roll rivet assembly 31, thereby saving time for loading and unloading and improving production efficiency.

[0066] Alternatively, if Figure 4 As shown, in one embodiment, the self-locking assembly 33 includes a fixed block 331, a self-locking slider 332, an elastic member 333 and a stopper 334. The fixed block 331 is fixed to the equipment platform 10, and the stopper 334 is fixed to the rolling riveting assembly 31. The fixed block 331 has a slide groove, and the self-locking slider 332 is slidably arranged in the slide groove. The elastic member 333 is arranged between the self-locking slider 332 and the fixed block 331, so that the self-locking slider 332 abuts against the stopper 334. In this way, the elastic member 333 can make the self-locking slider 332 have a tendency to move away from the fixed block 331, so that the elastic member 333 can maintain a self-locking state. When the self-locking slider 332 is moved to squeeze the elastic member 333, the self-locking slider 332 can be separated from the stopper 334, so that the stopper 334 can slide with the rolling riveting assembly 31.

[0067] Optionally, in some embodiments, the elastic member 333 may be implemented as a compression spring.

[0068] Preferably, if Figure 4 As shown, in some embodiments, two groups of the fixed block 331, the self-locking slider 332 and the elastic member 333 are arranged on both sides of the rolling rivet assembly 31 in a direction perpendicular to the sliding direction of the rolling rivet assembly 31, and the limiting member 334 is set in a direction perpendicular to the sliding direction of the rolling rivet assembly 31. The self-locking slider 332 has a first guide surface 3321, and the first guide surface 3321 extends obliquely from the outside to the inside in a direction away from the clamping jig 20. The limiting member 334 has a second guide surface 3341, and the second guide surface 3341 extends obliquely from the outside to the inside in a direction away from the clamping jig 20. When the rolling riveting assembly 31 slides in the direction away from the clamping fixture 20, the first guide surface 3321 cooperates with the second guide surface 3341, and the stopper 334 can push the self-locking slider 332 to slide toward the fixed block 331, so that the stopper 334 is separated from the self-locking slider 332. After the stopper 334 is separated from the self-locking slider 332, the self-locking slider 332 is pushed by the elastic member 333 and rebounds, thereby limiting the stopper 334 from sliding in the direction close to the clamping fixture 20, and realizing the self-locking function of the rolling riveting assembly 31. In this way, it is convenient to quickly switch the self-locking assembly 33 to the self-locking state.

[0069] Furthermore, if Figure 4 As shown, in some embodiments, the clamping fixture 20 includes a rotating member 21 and a plurality of clamping members 22, wherein the rotating member 21 is rotatably connected to the device platform 10, and the rotating member 21 has an installation groove, which is used to install the shell 42 and the lens body 41, and the clamping member 22 is detachably installed around the installation groove. When the shell 42 and the lens body 41 are installed in the installation groove, the clamping member 22 can clamp the shell 42 and the lens body 41. In this way, through the cooperation of the clamping member 22 and the rotating member 21, the shell 42 and the lens body 41 are pressed together to zero gap of the art seam, and the shell 42 and the lens body 41 are kept in a clamped state. After being fixed by rolling rivets, the shell 42 and the lens body 41 can be assembled more tightly, so that the sealing performance of the lens module 40 is better and the appearance is more beautiful.

[0070] Optionally, in some embodiments, the pressing member 22 may be detachably fixed to the rotating member 21 by bolts.

[0071] Furthermore, if Figure 6 As shown, the present application also provides a lens module rolling riveting method, which is used to assemble the lens module by the above-mentioned lens module rolling riveting device, and the lens module rolling riveting method includes the following steps:

[0072] S100, pressing a lens body of the lens module and a housing of the lens module by a pressing jig to obtain a pre-assembled assembly;

[0073] S200, adjusting the adjusting component according to the set feed amount to move the rolling riveting component to the rolling position;

[0074] S300, driving the pressing fixture or the device platform to rotate by a driving assembly, so as to drive the rolling rivet assembly to rotate relative to the pre-assembled assembly, so that the rolling rivet assembly roll-rivets the rolling rivet rib of the shell into the rolling rivet groove of the lens body; and

[0075] S400, adjusting the adjustment component to move the rolling riveting component to an initial position, and removing the pre-assembled component after rolling riveting to obtain an assembled lens module.

[0076] It can be understood that according to the above steps of the lens module rolling riveting method of the present application, when assembling the lens module 40 of the present application, Fig. 8A As shown, the housing and the lens body 41 can be first pressed together by the pressing fixture 20; Figure 8B As shown, the adjusting component 32 is then used to adjust the rolling position of the rolling riveting component 31 to the side of the rolling riveting rib 421 according to the set feed amount; Figure 8C , Fig.8D and Fig. 8E As shown, the pressing jig 20 or the equipment platform 10 is driven to rotate by the driving jig, and the relative rotation between the rivet assembly 31 and the rivet rib 421 of the shell 42 is utilized to cause the rivet rib 421 to produce plastic deformation, thereby riveting the rivet rib 421 into the rivet groove 411 of the lens body 41.

[0077] Preferably, if Figure 7 As shown, in some embodiments, the above step S300, driving the pressing fixture or the equipment platform to rotate by the driving component to drive the rolling rivet component to rotate relative to the pre-installed component, so that the rolling rivet component rolls and rivets the rolling rivet rib of the shell into the rolling rivet groove of the lens body, includes the following steps:

[0078] S310, driving the pressing fixture to rotate forwardly by a set angle or the equipment platform to rotate backwardly by a set angle through a driving assembly, so as to drive the riveting roll assembly to rotate forwardly relative to the pre-installed assembly, so that the riveting roll assembly will reversely roll the riveting rib of the shell; and

[0079] S320, driving the clamping fixture to rotate in the reverse direction by the set angle or the equipment platform to rotate in the forward direction by the set angle through the driving assembly, so as to drive the riveting assembly to rotate in the reverse direction relative to the pre-installed assembly, so that the riveting assembly can roll the riveting ribs of the shell in the forward direction.

[0080] With such configuration, in step S310, the preassembled component is subjected to a first rolling riveting operation, so that the rolling rivet rib 421 can be riveted into the rolling rivet groove 411. In step 320, the preassembled component is subjected to a second rolling riveting operation, so that the fitting effect between the rolling rivet rib 421 and the rolling rivet groove 411 can be ensured.

[0081] It is worth noting that the above steps S310 and S320 can be repeated multiple times to ensure that the rivet bar 421 can be completely riveted into the rivet groove 411 .

[0082] The advantages of the lens module rolling riveting method of the present application are further explained below with reference to specific examples.

[0083] The present application provides 11 sets of lens modules with rivet grooves and rivet ribs of different sizes, and their specific sizes are shown in Table 1 below.

[0084] Table 1: Comparison table of the dimensions of the roll rivet grooves and roll rivet ribs of each lens module

[0085]

[0086] Among them, Figure 2 and Figure 3 As shown, R1 is the radius of the bottom of the rivet groove 411, R2 is the radius of the fillet between the rivet groove 411 and the side wall of the lens body 41, α1 is the angle between the groove wall of the rivet groove 411 and the horizontal direction, h1 is the length of the groove wall of the rivet groove 411 in the vertical direction, h2 is the horizontal distance between the center of the groove bottom of the rivet groove 411 and the side wall of the lens body 41, h3 is the length of the rivet groove 411 in the vertical direction, and α2 is the center angle of the rivet rib 421.

[0087] The present application provides three rolling riveting schemes for the above-mentioned 11 groups of lens modules 40 respectively, and performs CAE simulation and DOE verification. The rolling riveting schemes and DOE verification results are shown in Table 2.

[0088] Table 2: DOE verification results table

[0089]

[0090]

[0091] CAE simulation results are as follows Fig. 9The figure shows a contour plot obtained by CAE simulation, where s-stresscomponents represents the stress value at the integration point, and the unit is (mises). Simple average represents the simple average value of stress. The CAE simulated stress of the rolling riveting process is 30 MPa, while the CAE simulated stress of the traditional press riveting process is generally 100 MPa. Therefore, the lens module rolling riveting method of the present application can more effectively reduce stress and reduce the impact of stress on the lens optical system.

[0092] It can be obtained from the CAE simulation results and DOE verification results that the lens module 40 of the above-mentioned scheme 1 is the optimal scheme, and the scheme is in the optimal parameters from the perspective of thrust, torsion and slicing. The number of the rivet ribs 421 of the shell 42 of the lens module 40 of the present application is preferably two sections, the center angle of the rivet ribs 421 is preferably 100°, the rib thickness of the rivet ribs 421 is preferably 5mm, the radius of the bottom of the rivet groove 411 of the lens body 41 is preferably 0.4mm, the radius of the round chamfer between the rivet groove 411 and the side wall of the lens body 41 is preferably 0.2mm, the angle between the groove wall of the rivet groove 411 and the horizontal direction is preferably 154.3°, the length of the groove wall of the rivet groove 411 in the vertical direction is preferably 0.13mm, the horizontal distance between the center of the groove bottom of the rivet groove 411 and the side wall of the lens body 41 is preferably 0.2mm, and the length of the rivet groove 411 in the vertical direction is preferably 1.33mm. The set feed rate of the lens module rolling riveting method of the present application is preferably 0.4 mm, and in order to preset a certain margin, the set angle of the lens module rolling riveting method of the present application is 120°.

[0093] The technical features of the above embodiment can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above embodiment are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0094] The above embodiments only express several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A lens module rolling riveting device, characterized in that: include: Device platform; A pressing jig, which is rotatably disposed on the equipment platform and is used to press the housing of the lens module and the lens body of the lens module to form a pre-assembled assembly; A plurality of rolling rivet jigs, the rolling rivet jigs are arranged circumferentially around the pressing jig at intervals, the rolling rivet jig comprises a rolling rivet assembly and an adjusting assembly, the adjusting assembly is fixed to the equipment platform and is adjustably connected to the rolling rivet assembly to adjust the distance between the rolling rivet assembly and the center of the pressing jig; as well as A driving assembly is drivingly connected to the clamping jig or the equipment platform, and is used to drive the clamping jig to rotate forward or reverse relative to the equipment platform, so as to drive the rolling rivet assembly to rotate relative to the pre-assembled assembly, so that the rolling rivet assembly roll-rivets the rivet rib of the shell into the rolling rivet groove of the lens body.

2. The lens module rolling riveting equipment according to claim 1, characterized in that: The adjusting component includes a fixing part, an adjusting part, a resetting part and a matching part fixed to the equipment platform, the matching part is fixed to the fixing part, the rolling rivet assembly is slidably connected to the fixing part, the resetting part is arranged between the rolling rivet assembly and the fixing part so that the adjusting part abuts against the rolling rivet assembly, and the adjusting part is threadedly matched with the matching part to push the rolling rivet assembly close to the center of the clamping fixture when rotating.

3. The lens module rolling riveting equipment according to claim 2, characterized in that: The surfaces of the adjusting member and the matching member are provided with scales, and the scales are used to display the adjustment distance of the adjusting member.

4. The lens module rolling riveting device according to claim 2, characterized in that: The rolling riveting assembly comprises a connecting piece which can be slidably connected to the fixing piece along the radial direction of the pressing jig and a rolling riveting piece which can be rotatably connected to the connecting piece, and the adjusting piece abuts against the connecting piece.

5. The lens module rolling riveting device according to any one of claims 1 to 4, characterized in that: The rolling rivet jig further includes at least one self-locking component, which is arranged between the rolling rivet component and the equipment platform and is used to limit the rolling rivet component from sliding away from the rolling rivet component in a self-locking state.

6. The lens module rolling riveting device according to claim 5, characterized in that: The self-locking assembly includes a fixed block, a self-locking slider, an elastic member and a limit member. The fixed block is fixed to the equipment platform, the limit member is fixed to the rolling riveting assembly, the fixed block has a slide groove, the self-locking slider is slidably disposed in the slide groove, and the elastic member is disposed between the self-locking slider and the fixed block so that the self-locking slider abuts against the limit member.

7. The lens module rolling riveting device according to any one of claims 1 to 4, characterized in that: The clamping fixture includes a rotating part rotatably arranged on the equipment platform and a plurality of clamping parts, the rotating part has a mounting groove for mounting the shell and the lens body, and the clamping part is detachably mounted around the mounting groove for clamping the shell and the lens body to form a pre-assembled component.

8. A lens module rolling riveting method, used for assembling a lens module by using the lens module rolling riveting device according to any one of claims 1 to 7, characterized in that: The following steps are involved: The lens body of the lens module and the housing of the lens module are pressed together by a pressing jig to obtain a pre-assembled assembly; According to the set feed amount, adjust the adjustment component to move the rolling riveting component to the rolling position; The pressing jig or the equipment platform is driven to rotate by the driving assembly, so as to drive the rolling rivet assembly to rotate relative to the pre-installed assembly, so that the rolling rivet assembly rolls and rivets the rolling rivet rib of the housing into the rolling rivet groove of the lens body; and The adjusting component is adjusted to move the rolling riveting component to the initial position, and the pre-assembled component after rolling riveting is removed to obtain an assembled lens module.

9. The lens module rolling riveting method according to claim 8, characterized in that: The step of driving the pressing jig or the equipment platform to rotate by the driving assembly to drive the rolling rivet assembly to rotate relative to the pre-assembled assembly so that the rolling rivet assembly rolls and rivets the rolling rivet rib of the housing into the rolling rivet groove of the lens body comprises the following steps: The pressing fixture is driven to rotate forwardly at a set angle or the equipment platform is driven to rotate backwardly at a set angle by the driving assembly, so as to drive the rolling rivet assembly to rotate forwardly relative to the pre-installed assembly, so that the rolling rivet assembly will reversely roll the rolling rivet rib of the shell; and The pressing fixture is driven to rotate in the reverse direction by the set angle or the equipment platform is driven to rotate in the forward direction by the set angle through the driving assembly, so as to drive the riveting assembly to rotate in the reverse direction relative to the pre-installed assembly, so that the riveting assembly can roll the riveting ribs of the shell in the forward direction.

10. A lens module, characterized in that: include: A lens body, wherein the lens body has a rolling rivet groove; A housing, wherein the housing has a rolling rivet rib, the rolling rivet rib is covered in the rolling rivet groove, and the housing is riveted to the lens body by the lens module rolling riveting method according to any one of claims 8 to 9; as well as A sealing member is disposed between the lens body and the housing.

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