A three-dimensional welding fixture for miniature optical lens modules and its usage method

Abstract

This invention discloses a three-dimensional welding fixture for miniature optical lens modules and its usage method, comprising: a base, wherein a receiving groove matching the miniature optical lens module is formed on one side of the upper end surface of the base, and a first positioning member is provided on the base; an intermediate support, wherein a limiting groove that mates with a PCB board is formed vertically through one side surface of the intermediate support, and a pad with a thickness less than the groove depth is provided near the bottom of the limiting groove, and a second positioning member that mates with the first positioning member is provided on the intermediate support; when the first positioning member and the second positioning member are fully engaged, the lower end surface of the intermediate support contacts the upper end surface of the base, and the limiting groove is directly opposite the receiving groove. The purpose of this invention is to solve the problems of open solder joints, cold solder joints, and solder bridges that easily occur when welding miniature optical lens modules to PCB boards on the basis of conventional soldering.

Description

Technical Field

[0001] This invention belongs to the field of tooling and fixture technology, specifically relating to a three-dimensional welding fixture for a miniature optical lens module and its usage method. Background Technology

[0002] With the widespread adoption of smartphones and continuous innovation in consumer electronics, the demand for miniature optical lens modules is constantly increasing. In the future, with ongoing technological advancements and expanding application areas, the application prospects for miniature optical lens modules will be even broader.

[0003] In the application technology of miniature optical lens modules, certain miniature optical lens modules with specific requirements need to be soldered to PCB boards for electrical connection. Since the size of miniature optical lens modules is at the micrometer level, traditional soldering methods are only suitable for large components and cannot guarantee a reliable electrical connection between the miniature optical lens module and the PCB board. This easily leads to phenomena such as open solder joints, cold solder joints, and bridging, which in turn cannot guarantee the reliability of signal transmission after soldering. How to reliably solder miniature optical lens modules to PCB boards based on conventional soldering is a technical problem that urgently needs to be solved. Summary of the Invention

[0004] To address the problems existing in the prior art, this invention provides a three-dimensional welding fixture for miniature optical lens modules and a method for using it. Its purpose is to solve the problems of open solder joints, false solder joints, and solder bridging that easily occur when welding miniature optical lens modules to PCB boards on the basis of conventional soldering.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0006] A three-dimensional welding fixture for miniature optical lens modules includes:

[0007] The base has a receiving groove that matches the miniature optical lens module on one side of its upper surface, and a first positioning element is provided on the base.

[0008] The intermediate support has a vertically extending limiting groove on one side surface that mates with the PCB board. A pad with a thickness less than the groove depth is provided near the bottom of the limiting groove. The intermediate support is provided with a second positioning member that can mate with the first positioning member. When the first positioning member and the second positioning member are fully engaged, the lower end surface of the intermediate support contacts the upper end surface of the base, and the limiting groove is directly opposite the receiving groove.

[0009] Furthermore, the welding fixture also includes:

[0010] A clamping assembly includes a cover plate, a side plate connected to the bottom of one side of the cover plate, and a clamping block disposed inside the side plate and matching the limiting groove; when the cover plate is placed on the upper end surface of the intermediate support, the clamping block is engaged in the limiting groove.

[0011] Furthermore, the upper end face of the intermediate support is provided with a slot near both ends, and the bottom of the cover plate is provided with a locking block that cooperates with the slot near both ends.

[0012] Furthermore, the upper surface of the base is provided with a plurality of receiving grooves evenly distributed along the length direction near one side, and a plurality of limiting grooves corresponding to the receiving grooves are provided vertically through one side surface of the intermediate support, and a plurality of pressure blocks corresponding to the receiving grooves are provided on the inner side of the side plate.

[0013] Furthermore, a groove is provided on the other side of the intermediate support.

[0014] Furthermore, the groove is located at the middle position on the other side of the intermediate support.

[0015] Furthermore, the first positioning element is a T-shaped block fixed to the upper surface of the base, and the second positioning element is a T-shaped groove formed on one side of the intermediate support and capable of cooperating with the T-shaped block.

[0016] Furthermore, the first positioning element is a positioning hole formed on the upper surface of the base, and the second positioning element is a positioning post fixed to the lower surface of the intermediate support and capable of engaging with the positioning hole.

[0017] A method for using a three-dimensional welding fixture for a miniature optical lens module includes:

[0018] The miniature optical lens module to be welded is placed in the receiving groove on the upper surface of the base;

[0019] After the first positioning component and the second positioning component are fully engaged, the lower end face of the intermediate support contacts the upper end face of the base, and the limiting groove is directly opposite the receiving groove. The PCB board to be welded is placed against the pad in the limiting groove, and the bottom of the PCB board to be welded contacts the top of the micro optical lens module to be welded for welding.

[0020] Furthermore, it also includes:

[0021] After the cover plate is placed on the upper surface of the intermediate support, the pressure block on the inner side of the side plate fits into the limiting groove, and the bottom of the pressure block presses against the top of the PCB board to be soldered.

[0022] Compared with the prior art, the present invention has at least the following beneficial effects:

[0023] This invention provides a three-dimensional welding fixture for miniature optical lens modules. In use, the miniature optical lens module to be welded is first placed in a receiving groove on the upper surface of the base, using the receiving groove to limit and fix the module. Then, after the first and second positioning components are fully engaged, the lower surface of the intermediate support contacts the upper surface of the base, with the limiting groove and the receiving groove facing each other. Finally, the PCB board to be welded is placed against the pad in the limiting groove. After attachment, the bottom of the PCB board contacts the top of the miniature optical lens module, at which point welding can begin. Because the receiving groove and the pad in the corresponding limiting groove limit and fix the PCB board, high welding reliability and high dimensional consistency are ensured. This solves the problems of module fixation, dimensional consistency, and mass production that conventional welding methods cannot address. It also avoids the problems of open solder joints, cold solder joints, and solder bridges that easily occur when welding miniature optical lens modules to PCB boards on top of conventional soldering.

[0024] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the specific embodiments of the present invention, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is an overall schematic diagram of a three-dimensional welding fixture for a miniature optical lens module according to an embodiment of the present invention (the clamping component is fully fitted on the intermediate support);

[0027] Figure 2 This is an exploded view of a three-dimensional welding fixture for a miniature optical lens module according to an embodiment of the present invention, taken from a first-view perspective.

[0028] Figure 3 This is an exploded view of a three-dimensional welding fixture for a miniature optical lens module according to an embodiment of the present invention, from a second perspective, wherein the first perspective and the second perspective are relative perspectives.

[0029] Figure 4 This is a schematic diagram illustrating the welding process using a three-dimensional welding fixture for a miniature optical lens module according to an embodiment of the present invention.

[0030] Figure 5 for Figure 4 Enlarged schematic diagram of the welding position.

[0031] In the diagram: 1-Base; 10-Receiving slot; 11-First positioning component; 2-Intermediate support; 20-Limiting slot; 21-Padded block; 22-Second positioning component; 23-Card slot; 24-Groove; 3-Pressure assembly; 30-Cover plate; 31-Side plate; 32-Pressure block; 33-Card block; 4-Miniature optical lens module; 5-PCB board; 6-Micron-level high-precision soldering station; 7-Micron-level soldering wire. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Combination Figures 1 to 3 As shown, an embodiment of the present invention provides a three-dimensional welding fixture for a miniature optical lens module, comprising a base 1 and an intermediate support 2, as follows: Figure 2 and Figure 3 As shown, a receiving groove 10 matching the miniature optical lens module 4 is provided on one side of the upper end surface of the base 1, and a first positioning member 11 is provided on the base 1. That is to say, the miniature optical lens module 4 to be welded can be placed in the receiving groove 10, and the receiving groove 10 is used to limit and fix the miniature optical lens module 4 to be welded.

[0034] like Figure 2 As shown, a vertically extending limiting groove 20, which mates with the PCB board 5, is provided on one side of the intermediate support 2. A pad 21, with a thickness less than the groove depth, is positioned near the bottom of the limiting groove 20. A second positioning member 22, capable of mates with the first positioning member 11, is provided on the intermediate support 2. When the first positioning member 11 and the second positioning member 22 are fully engaged, the lower end face of the intermediate support 2 contacts the upper end face of the base 1, and the limiting groove 20 is directly opposite the receiving groove 10. In other words, the intermediate support 2 and the base 1 are positioned and engaged by the full engagement of the first positioning member 11 and the second positioning member 22, and the pad 21 positioned near the bottom of the limiting groove 20 is used to limit and fix the PCB board 5 to be soldered.

[0035] Specifically, see Figure 4 and Figure 5As shown in the figure, the method of using a three-dimensional welding fixture for a miniature optical lens module in this embodiment is as follows: First, the miniature optical lens module 4 to be welded is placed in the receiving groove 10 on the upper surface of the base 1, and the receiving groove 10 is used to limit and fix the miniature optical lens module 4 to be welded; then, after the first positioning member 11 and the second positioning member 22 are fully engaged, the lower end surface of the intermediate support 2 is in contact with the upper end surface of the base 1, and the limiting groove 20 and the receiving groove 10 are directly opposite each other; finally, the PCB board 5 to be welded is placed against the pad 21 in the limiting groove 20. After the abutment is completed, the bottom of the PCB board 5 to be welded is in contact with the top of the miniature optical lens module 4 to be welded, and welding can then be performed. For example, after the module is positioned, a professional micron-level high-precision welding station 6 is used with professional micron-level welding wire 7 to perform metal bonding welding on the PCB board 5 and the miniature optical lens module 4.

[0036] Based on the above embodiments, as a more preferred embodiment, combined with Figures 1 to 3 As shown, the welding fixture also includes a clamping assembly 3, which includes a cover plate 30, a side plate 31 connected to the bottom of one side of the cover plate 30, and a pressure block 32 disposed inside the side plate 31 and matched with the limiting groove 20. When the cover plate 30 is placed on the upper end face of the intermediate support 2, the pressure block 32 is fitted into the limiting groove 20.

[0037] Specifically, after the receiving groove 10 is used to limit and fix the miniature optical lens module 4 to be welded, and the pad 21 in the limiting groove 20 opposite to the receiving groove 10 is used to limit and fix the PCB board 5 to be welded, the clamping assembly 3 is used to clamp the PCB board 5. That is, after the cover plate 30 is placed on the upper end surface of the intermediate support 2, the pressure block 32 is fitted in the limiting groove 20, and the lower end of the pressure block 32 abuts against the top of the PCB board 5 to achieve vertical limitation of the PCB board 5. In other words, the clamping assembly 3 is used to position the PCB board 5, thereby ensuring the three-dimensional size and angle of the miniature optical lens module 4.

[0038] See Figure 4 and Figure 5As shown in the figure, the method of using a three-dimensional welding fixture for a miniature optical lens module in this embodiment is as follows: First, the miniature optical lens module 4 to be welded is placed in the receiving groove 10 on the upper surface of the base 1, and the receiving groove 10 is used to limit and fix the miniature optical lens module 4 to be welded; then, after the first positioning member 11 and the second positioning member 22 are fully engaged, the lower surface of the intermediate support 2 is in contact with the upper surface of the base 1, and the limiting groove 20 and the receiving groove 10 are directly opposite each other; next, the PCB board 5 to be welded is placed against the pad 21 in the limiting groove 20. After the pad is placed against the pad, the cover plate 30 is placed on the upper surface of the intermediate support 2, and the pressure block 32 is engaged in the limiting groove 20. The lower end of the pressure block 32 is pressed against the top of the PCB board 5 to limit the PCB board 5 in the vertical direction, so that the bottom of the PCB board 5 to be welded is in contact with the top of the miniature optical lens module 4 to be welded, and welding can be performed at this time.

[0039] After the cover plate 30 is placed on the upper end of the intermediate support 2, the pressure block 32 on the inner side of the side plate 31 is fitted into the limiting groove 20, and the bottom of the pressure block 32 is pressed against the top of the PCB board 5 to be soldered.

[0040] Better, such as Figure 2 As shown, a slot 23 is provided on the upper end face of the intermediate support 2 near both ends, such as... Figure 3 As shown, a locking block 33 is provided at the bottom of the cover plate 30 near both ends, which cooperates with the locking slot 23. That is to say, by using the locking block 33 to cooperate with the locking slot 23, the cover plate 30 and the intermediate support 2 can be connected conveniently and quickly.

[0041] In one embodiment, combined with Figure 2 and Figure 3 As shown, multiple receiving slots 10 are evenly distributed along the length direction on the upper surface of the base 1 near one side. Multiple limiting slots 20 corresponding to the receiving slots 10 are vertically opened on one side surface of the intermediate support 2. Multiple pressing blocks 32 corresponding to the receiving slots 10 are provided on the inner side of the side plate 31. For example, four receiving slots 10 are evenly distributed along the length direction on the upper surface of the base 1 near one side. Four limiting slots 20 corresponding to the receiving slots 10 are vertically opened on one side surface of the intermediate support 2. Four pressing blocks 32 corresponding to the receiving slots 10 are provided on the inner side of the side plate 31.

[0042] Specifically, by setting up multiple sets of receiving slots 10, corresponding limiting slots 20 and pressure blocks 32, multiple miniature optical lens modules 4 can be assembled with the PCB board 5 at the same time, thereby improving the soldering efficiency.

[0043] As a more preferred embodiment, such as Figure 2 and Figure 3As shown, a groove 24 is provided on the other side of the intermediate support 2, which makes it easier to open the cover plate 30 and facilitates operation.

[0044] Preferably, the groove 24 is located in the middle of the other side of the intermediate support 2, so that the force is evenly distributed and the cover plate 3 can be prevented from getting stuck on the intermediate support 2 during the opening process.

[0045] In one embodiment, such as Figure 2 As shown, the first positioning element 11 is a T-shaped block fixed to the upper surface of the base 1, and the second positioning element 22 is a T-shaped groove formed on one side of the intermediate support 2 and capable of engaging with the T-shaped block. Specifically, by utilizing the engagement of the T-shaped groove and the T-shaped block, the correspondence between the limiting groove 20 and the receiving groove 10 can be quickly achieved. During operation, the intermediate support 2 is pushed horizontally in to achieve the engagement and limiting of the T-shaped groove and the T-shaped block.

[0046] For example, a T-shaped block is provided on the base 1 near both ends, and a T-shaped groove is provided on one side of the middle support 2 near both ends.

[0047] In one embodiment, the first positioning member 11 can also be a positioning hole formed on the upper end face of the base 1, and the second positioning member 22 can be a positioning post fixed to the lower end face of the intermediate support and capable of cooperating with the positioning hole. Quick positioning can also be achieved by inserting the positioning post into the positioning hole. Of course, other positioning methods are also possible, as long as positioning ensures that the lower end face of the intermediate support 2 contacts the upper end face of the base 1, and the limiting groove 20 is aligned with the receiving groove 10.

[0048] In the description of this invention, it should be understood that the terms "upper", "lower", "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.

[0049] 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 as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0050] In this invention, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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, an electrical connection, or a connection that allows communication between them; 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0051] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0052] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0053] Finally, it should be noted that the above-described embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit it. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A three-dimensional welding fixture for a miniature optical lens module, characterized in that, include: The base (1) has a receiving groove (10) that matches the miniature optical lens module (4) on the upper end surface of the base (1) near one side, and a first positioning member (11) is provided on the base (1). The intermediate support (2) has a vertically extending limiting groove (20) on one side surface that cooperates with the PCB board (5). A pad (21) with a thickness less than the groove depth is provided near the bottom of the limiting groove (20). The intermediate support (2) is provided with a second positioning member (22) that can cooperate with the first positioning member (11). When the first positioning member (11) and the second positioning member (22) are fully engaged, the lower end face of the intermediate support (2) contacts the upper end face of the base (1), and the limiting groove (20) is directly opposite the receiving groove (10). The clamping assembly (3) includes a cover plate (30), a side plate (31) connected to the bottom of one side of the cover plate (30), and a pressure block (32) disposed inside the side plate (31) and matched with the limiting groove (20); when the cover plate (30) covers the upper end surface of the intermediate support (2), the pressure block (32) fits into the limiting groove (20).

2. The three-dimensional welding fixture for a miniature optical lens module according to claim 1, characterized in that, The upper end face of the intermediate support (2) is provided with a slot (23) near both ends, and the bottom of the cover plate (30) is provided with a block (33) that cooperates with the slot (23) near both ends.

3. The three-dimensional welding fixture for a miniature optical lens module according to claim 1, characterized in that, The upper end face of the base (1) is provided with a plurality of receiving grooves (10) evenly distributed along the length direction near one side. The middle support (2) is provided with a plurality of limiting grooves (20) corresponding to the receiving grooves (10) through the vertical direction on one side surface. The inner side of the side plate (31) is provided with a plurality of pressure blocks (32) corresponding to the receiving grooves (10).

4. A three-dimensional welding fixture for a miniature optical lens module according to claim 1, characterized in that, A groove (24) is provided on the other side of the intermediate support (2).

5. A three-dimensional welding fixture for a miniature optical lens module according to claim 4, characterized in that, The groove (24) is located in the middle of the other side of the intermediate support (2).

6. A three-dimensional welding fixture for a miniature optical lens module according to claim 1, characterized in that, The first positioning element (11) is a T-shaped block fixed on the upper surface of the base (1), and the second positioning element (22) is a T-shaped groove formed on one side of the intermediate support (2) and capable of cooperating with the T-shaped block.

7. A three-dimensional welding fixture for a miniature optical lens module according to claim 1, characterized in that, The first positioning element (11) is a positioning hole opened on the upper end face of the base (1), and the second positioning element (22) is a positioning post fixed on the lower end face of the intermediate support and capable of cooperating with the positioning hole.

8. A method of using a three-dimensional welding fixture for a miniature optical lens module as described in any one of claims 1 to 5, characterized in that, include: The miniature optical lens module (4) to be welded is placed in the receiving groove (10) on the upper surface of the base (1); After the first positioning member (11) and the second positioning member (22) are fully engaged, the lower end face of the intermediate support (2) contacts the upper end face of the base (1), and the limiting groove (20) is directly opposite the receiving groove (10). The PCB board (5) to be welded is placed against the pad (21) in the limiting groove (20), and the bottom of the PCB board (5) to be welded contacts the top of the micro optical lens module (4) to be welded for welding.

9. The method of using the three-dimensional welding fixture for a miniature optical lens module according to claim 8, characterized in that, Also includes: After the cover plate (30) is placed on the upper end surface of the intermediate support (2), the pressure block (32) on the inner side of the side plate (31) is fitted into the limiting groove (20), and the bottom of the pressure block (32) is pressed against the top of the PCB board (5) to be welded.

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