Multi-point welding method for lens processing

Abstract

This invention discloses a multi-point welding method for lens processing, including a weld point location determination method, a flux control method, and a welding energy compensation method. Three or more weld points are set between a first weldment and a second weldment, with the second weldment and the first weldment forming parallel concentric circles, and each weld point located within the range of the second weldment. Before welding the three weld points, flux is added to each weld point according to a preset flux dosage value. When welding energy is increased at each weld point simultaneously, a detection device detects each weld point. The detection method compares the preset value with real-time detection. If the real-time energy is lower than the preset value, the energy is increased for weld points below the preset value; if the real-time energy is higher than the preset value, the energy is reduced for weld points above the preset value. This invention solves the problems of existing welding methods for lenses and sensors or other various planes that cannot maximize parallelism and have low reliability.

Description

Technical Field

[0001] This invention relates to the field of lens processing and manufacturing, and in particular to a multi-point welding method for lens processing. Background Technology

[0002] In the lens manufacturing process, including the welding process between the lens body and the sensor, the quality of the welding between the sensor and the lens body plays a crucial role in the performance of the lens module. Existing technologies employ asynchronous welding of the lens and sensor, where solder points are added one by one to sequentially weld the lens and sensor together. Other methods use adhesive bonding, employing optical adhesive. This asynchronous welding method requires sequentially setting solder pads and solder points, and welding each one individually using welding tools. This method is cumbersome and requires a rotating device located below the sensor or lens. Furthermore, this asynchronous welding method lacks solder and welding temperature compensation functions, and the finished product cannot maximize the parallelism between the lens and sensor, directly affecting image quality. Adhesive bonding, on the other hand, is susceptible to temperature and humidity fluctuations, affecting its lifespan and leading to problems such as yellowing, cracking, and even detachment, resulting in poor reliability. Summary of the Invention

[0003] The technical solution of this invention aims to at least partially solve one of the technical problems in related technologies. Therefore, the main objective of this invention is to provide a multi-point welding method for lens processing, aiming to solve the problems of existing welding methods for lenses and sensors or other various planes that cannot maximize parallelism and have low reliability.

[0004] To achieve the above objectives, the present invention provides a multi-point welding method for lens processing, comprising:

[0005] A1. Method for determining the location of solder joints;

[0006] A2. Flux control methods;

[0007] A3. Welding energy compensation methods

[0008] The method for determining the location of the weld points includes setting three or more weld points between the first weldment and the second weldment, wherein the lines connecting the weld points are regular polygons, the second weldment and the first weldment are parallel concentric circles, and each weld point is located within the range of the second weldment.

[0009] The flux control method includes adding flux to each of the three solder joints before welding, using a preset flux dosage value. The flux dosage value depends on the size and surface material of the first and second weldments.

[0010] The welding energy compensation method includes, when welding is performed by simultaneously increasing the energy of each of the weld points, detecting each of the weld points by a detection device. The detection method adopts a method of comparing a preset value with real-time detection. When the real-time energy is lower than the preset value, the energy of the weld point that is lower than the preset value is increased. When the real-time energy is higher than the preset value, the energy of the weld point that is higher than the preset value is reduced.

[0011] As a further embodiment of the present invention, the addition of flux and the increase of energy are steps performed simultaneously.

[0012] As a further aspect of the present invention, in the welding energy compensation method, a thermal imaging camera is used to perform real-time detection of the weld joint.

[0013] As a further embodiment of the present invention, the first weldment and the second weldment are a sensor and a lens, respectively.

[0014] As a further embodiment of the present invention, the method for determining the location of the weld point, the method for controlling the flux, and the method for compensating the welding energy are also applicable to the welding of three-dimensional structures.

[0015] As a further embodiment of the present invention, when the first weldment and the second weldment are of equal size, the weld point is located at the intersection of the edges of the first weldment and the second weldment that are coaxial.

[0016] The beneficial effects of this invention are as follows:

[0017] This invention proposes a multi-point welding method for lens manufacturing. By employing simultaneous (increased energy) heating at three (or more) points, the lens and sensor are welded and fixed together, ensuring parallelism between the lens and sensor within the depth of field. This method improves reliability and extends service life. Furthermore, it incorporates flux control and welding energy compensation methods, keeping the welding process within a controllable range, increasing precision, and making it suitable for welding various materials. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the present invention or the prior art, 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 technical solutions of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram illustrating the welding steps in this invention.

[0020] Figure 2 This is a schematic diagram of the first weldment, the second weldment, and the weld points in this invention.

[0021] Figure 3 This is a schematic diagram of the solder joint connection in this invention.

[0022] Figure 4 This is a schematic diagram of another type of multi-weld point distribution and connection (four weld points, four deformations) in this invention.

[0023] Figure 5 This is a schematic diagram of another type of multi-weld point distribution and connection (five weld points, five deformations) in this invention.

[0024] Figure 6 This is a schematic diagram showing the distribution of weld points when two welded parts overlap in this invention.

[0025] Figure 7 This is a schematic diagram showing the distribution of weld points when welding other shapes in this invention.

[0026] Figure 8 This is a schematic diagram showing the distribution of weld points when welded parts of other shapes overlap in this invention.

[0027] [Table of Markings for Major Components / Assemblies]

[0028] label name label name 1 First weldment 3 solder joint 2 Second weldment Detailed Implementation

[0029] To make the objectives and advantages of the present invention clearer, the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them.

[0030] Based on the embodiments of the technical solution of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the technical solution of the present invention.

[0031] It should be noted that all directional indications (e.g., up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific state (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0032] In the technical solutions of this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0033] In the description of the technical solution of this invention, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0034] In the technical solutions of this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can refer to a fixed connection, a detachable connection, or an integral molding; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in the technical solutions of this invention according to the specific circumstances.

[0035] Furthermore, the inventive solutions of the various embodiments in the present invention can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of inventive solutions is contradictory or cannot be implemented, it should be considered that such combination of inventive solutions does not exist and is not within the scope of protection claimed by the present invention.

[0036] Specific embodiments of the present invention are as follows:

[0037] Please see the appendix Figures 1-5 ,

[0038] The implementation steps are as follows: A1. Method for determining the location of solder joint 3; A2. Flux control method; A3. Welding energy compensation method.

[0039] The method for determining the position of weld point 3 includes setting three or more weld points 3 between the first weldment 1 and the second weldment 2, and the connecting lines between the weld points 3 are regular polygons, the second weldment 2 and the first weldment 1 are parallel concentric circles, and each weld point 3 is located within the range of the second weldment 2.

[0040] The flux control method includes adding flux to each of the three solder points 3 before welding, according to a preset flux dosage value. The flux dosage value depends on the size and surface material of the first weldment 1 and the second weldment 2.

[0041] The welding energy compensation method includes: when welding is performed by increasing the energy of each welding point 3 at the same time, the detection device is used to detect each welding point 3. The detection method adopts a comparison between preset value and real-time detection. When the real-time energy is lower than the preset value, the energy of the welding point 3 that is lower than the preset value is increased. When the real-time energy is higher than the preset value, the energy of the welding point 3 that is higher than the preset value is reduced.

[0042] The working principle is as follows:

[0043] The concentric circles and regular polygonal weld points represent the most robust stress points evenly divided between two structures (two planes; lens and sensor, etc.). By simultaneously increasing welding energy on this basis, the two planes can be maximized to achieve maximum parallelism, while also ensuring a strong weld surface that is resistant to deformation. This allows the lens and sensor to remain parallel within the depth of field, improving image quality, reliability, and lifespan. Furthermore, it features flux control and welding energy compensation, keeping the welding process within a controllable range, increasing precision, and making it suitable for welding various materials.

[0044] The purpose of the "concentric circle" welding method is to find the optimal equilibrium stress point of the weld joint. For example, if both welded parts are polygons, the position of the weld joint is set to correspond to the concentric circles that are inscribed or circumscribed by the two welded parts.

[0045] In a preferred embodiment of the present invention, the addition of flux and the increase of energy are performed simultaneously.

[0046] While adding flux and increasing energy, weld the first weldment 1 and the second weldment 2 simultaneously to ensure the final welding quality.

[0047] In a preferred embodiment of the present invention, a thermal imaging camera is used to perform real-time detection of the weld point 3 in the welding energy compensation method.

[0048] If the flux is made of other materials, select the appropriate testing device.

[0049] In a preferred embodiment of the present invention, the first weldment 1 and the second weldment 2 are a sensor and a lens, respectively.

[0050] A preferred embodiment of the present invention: the method for determining the location of weld point 3, the flux control method, and the welding energy compensation method are also applicable to the welding of three-dimensional structures.

[0051] When welding a three-dimensional structure, the above welding method can also be used if the projections of weld point 3 and the two welded parts are concentric circles as they are when they are in a plane.

[0052] In a preferred embodiment of the present invention, when the first weldment and the second weldment are of equal size, the weld point is located at the intersection of the edges of the first weldment and the second weldment that are coaxial.

[0053] The above are merely preferred embodiments of the technical solution of the present invention and do not limit the patent scope of the technical solution of the present invention. All equivalent structural transformations made using the contents of the specification and drawings of the technical solution of the present invention under the inventive concept of the technical solution of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the technical solution of the present invention.

Claims

1. A multi-point welding method for lens processing, characterized by, Comprising the following steps: A1, a welding point position determination method; A2, a welding flux control method; A3, a welding energy compensation method, The welding point position determination method comprises setting three or more welding points between a first welding member and a second welding member, and the connecting lines between the welding points form a regular polygon, the second welding member and the first welding member are in parallel concentric circle corresponding relationship, and each welding point is located within the range of the second welding member; The welding flux control method comprises adding welding flux on each welding point by a preset welding flux value before welding on three or more welding points, and the welding flux value depends on the size and surface material of the first welding member and the second welding member; The welding energy compensation method comprises detecting each welding point by a detection device when welding on each welding point by increasing energy at the same time, the detection method adopts a preset value and a real-time detection comparison method, when the real-time energy is lower than the preset value, the welding point lower than the preset value is increased in energy, and when the real-time energy is higher than the preset value, the welding point higher than the preset value is reduced in energy, In the welding energy compensation method, a thermal imaging camera is used to detect the real-time of the welding point, The first welding member and the second welding member are a sensor and a lens respectively, when the size of the first welding member and the second welding member is equal, the welding point is located at the edge intersection of the coaxial center of the first welding member and the second welding member, By using multi-point simultaneous welding, the lens and the sensor are parallel.

2. The multi-point welding method for lens processing according to claim 1, wherein, The addition of welding flux and the increase of energy are simultaneous steps.

3. The multi-point welding method for lens processing according to claim 1, wherein The welding point position determination method, the welding flux control method and the welding energy compensation method are also applicable to the welding of three-dimensional structures.

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