A laser soldering device for electricity meters and its visual inspection device

Abstract

This utility model relates to the field of electricity meter manufacturing equipment, and discloses a laser soldering device for electricity meters and its visual inspection device. It includes a mounting platform, with a drag chain fixedly mounted on the upper part of the platform and a soldering mechanism fixedly mounted on the lower part of the drag chain. The soldering mechanism is slidably connected to the mounting platform via a slide rail. A laser focusing lens assembly is fixedly mounted on the lower part of the soldering mechanism via a disassembly and assembly component. The disassembly and assembly component includes a retaining ring fixedly connected to the outside of the laser focusing lens assembly. In this utility model, the upper patch of the connector is attracted to the permanent magnet at the lower part of the soldering mechanism, initially fixing its position. Simultaneously, the ball bearings of the connector are engaged in a slot under the action of an elastic element, forming a mechanical lock to prevent loosening. Disassembly requires no tools; only external force is applied to overcome the magnetic force and the elastic force of the elastic element to separate the laser focusing lens assembly. This solves the problems of time-consuming disassembly and assembly and easy stripping of threads in traditional bolted connections, improving maintenance efficiency.

Description

Technical Field

[0001] This utility model relates to the field of electricity meter manufacturing equipment, and in particular to a laser soldering device for electricity meters and its visual inspection device. Background Technology

[0002] In the manufacturing process of electricity meters, laser soldering technology is a core process for achieving precise connections between electronic components and circuit boards. Compared to traditional soldering techniques (such as wave soldering, hot air soldering, and soldering iron soldering), it achieves many effects that other technologies cannot match, while also offering significant advantages in maintenance costs. Electricity meters integrate a large number of microelectronic components. Laser soldering can focus energy into a spot with a diameter of less than 0.1mm, precisely targeting individual solder joints. Even with densely packed micro-pins, it can achieve interference-free soldering, ensuring the accuracy of circuit connections.

[0003] As a key component of laser soldering, the laser focusing lens assembly is traditionally fixed to the soldering mechanism using bolts. After long-term use, due to factors such as equipment vibration and temperature changes, the bolts are prone to loosening, leading to a decrease in laser focusing accuracy and causing defects such as solder joint misalignment, incomplete soldering, or over-soldering. Furthermore, when replacing or maintaining the lens assembly, multiple bolts need to be removed using tools, which is cumbersome and time-consuming. This not only affects production efficiency but may also cause positioning deviations of the lens assembly due to improper operation during disassembly and assembly, further affecting the soldering quality.

[0004] Electricity meters come in various models (covering single-phase, three-phase, and smart types, among others), and their internal component layouts and solder joint distributions differ. When it is necessary to replace different models of monitoring cameras to improve detection accuracy, the installation structure often needs to be redesigned, resulting in poor compatibility and increasing the cost and difficulty of equipment upgrades. To address this issue, a laser soldering device for electricity meters and its visual inspection device are proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a laser soldering device for electricity meters and its visual inspection device, which aims to solve the problems in the prior art that "the use of bolts to connect the laser focusing lens group leads to cumbersome disassembly and assembly, easy loosening, and affects the welding accuracy; when the monitoring camera of the visual inspection device is replaced, the installation structure needs to be redesigned, resulting in poor compatibility, high upgrade costs, and difficulty in adapting to the production needs of multiple models of electricity meters".

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a laser soldering device for an electricity meter and its visual inspection device, comprising a mounting platform, a drag chain fixedly mounted on the upper part of the mounting platform, a soldering mechanism fixedly mounted on the lower part of the drag chain, the soldering mechanism being slidably connected to the mounting platform via a slide rail, and a laser focusing lens group fixedly mounted on the lower part of the soldering mechanism via a disassembly and assembly assembly;

[0007] The assembly and disassembly assembly includes a retaining ring fixedly connected to the outside of the laser focusing lens group. A sleeve is fitted on the outside of the retaining ring and the laser focusing lens group. A patch is fixedly connected to the upper part of the sleeve. A permanent magnet is fixedly connected to the lower part of the soldering mechanism. A connector is fixedly connected to the inner wall of the sleeve. A slot for engaging with the connector is opened below the permanent magnet in the soldering mechanism.

[0008] As a further description of the above technical solution:

[0009] The connector includes a housing, which is fixedly connected to the inner wall of the sleeve. A sliding member is slidably connected to the inner wall of the housing. A ball is movably connected to the side of the sliding member near the center of the sleeve. The ball is engaged in the inner wall of the slot. The sliding member and the housing are elastically connected by an elastic member.

[0010] As a further description of the above technical solution:

[0011] The elastic element includes a spring, one end of which is fixedly connected to the outside of the sliding element, and the other end of which is fixedly connected to the inner wall of the outer casing.

[0012] As a further description of the above technical solution:

[0013] The upper diameter of the socket is larger than the lower diameter.

[0014] As a further description of the above technical solution:

[0015] The slot is arranged around the lower outer side of the soldering mechanism, and the inner wall of the slot is set as an arc surface.

[0016] As a further description of the above technical solution:

[0017] A visual inspection device for an electricity meter includes a monitoring camera fixedly mounted on the upper left side of a soldering mechanism via a connecting assembly. The connecting assembly includes a fixing seat fixedly connected to the upper part of the soldering mechanism. A connecting seat is sleeved on the outside of the fixing seat, and a rotating component is rotatably connected to the outside of the connecting seat. The rotating component and the connecting seat are elastically connected by a torsion spring.

[0018] As a further description of the above technical solution:

[0019] Multiple sets of snap-fit ​​plates are fixedly connected to the inner side of the rotating component. The snap-fit ​​plates slide on the inner wall of the connecting seat. An arc-shaped protrusion is provided on the outer side of the fixed seat. A connecting groove is opened at the arc-shaped protrusion of the fixed seat. The snap-fit ​​plates are snapped into the connecting groove.

[0020] As a further description of the above technical solution:

[0021] One end of the torsion spring is fixedly connected to the inner wall of the rotating part, and the other end of the torsion spring is fixedly connected to the inner wall of the connecting seat.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the position is initially fixed by the adsorption of the patch on the upper part of the socket and the permanent magnet at the lower part of the soldering mechanism; at the same time, the ball of the connector is locked into the slot under the action of the elastic element, forming a mechanical lock to prevent loosening. No tools are required for disassembly. Only external force needs to be applied to overcome the magnetic force and the elastic force of the elastic element to separate the laser focusing lens group. This solves the problems of time-consuming disassembly and assembly and easy stripping of traditional bolt connections, and improves maintenance efficiency.

[0024] 2. In this utility model, the tight fit between the snap-fit ​​plate and the connecting slot ensures that the monitoring camera does not shift in angle during equipment operation, guarantees the consistency of image acquisition, improves the accuracy of defect identification, and the modular design of the connecting components can be adapted to different models of monitoring cameras. By installing the connector, there is no need to redesign the installation structure, reducing the cost of equipment upgrades. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the overall device in this utility model;

[0026] Figure 2 This is a three-dimensional structural diagram of the disassembled components in this utility model;

[0027] Figure 3 This is a top view of the three-dimensional structure of the connector in this utility model;

[0028] Figure 4 This is a three-dimensional structural diagram showing the disassembled fixed base and connecting base in this utility model;

[0029] Figure 5 This is a three-dimensional structural diagram of the disassembled connecting component in this utility model.

[0030] Legend:

[0031] 1. Mounting platform; 2. Cable chain; 3. Soldering mechanism; 4. Slide rail; 5. Assembly / disassembly components; 51. Retaining ring; 52. Socket; 53. Permanent magnet; 54. Patch; 55. Housing; 56. Sliding component; 57. Elastic component; 58. Ball bearing; 59. Slot; 510. Connector; 6. Laser focusing lens assembly; 7. Monitoring camera; 8. Connecting components; 81. Mounting base; 82. Connecting base; 83. Rotating component; 84. Torsion spring; 85. Snap-fit ​​plate; 86. Connecting groove. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figure 1 - Figure 3 This utility model provides an embodiment of a laser soldering device for electricity meters and its visual inspection device, including a mounting platform 1, which serves as the basic load-bearing structure for the entire device. It is used to fix components such as a cable chain 2 and a slide rail 4, providing a stable mounting platform for the soldering mechanism 3 and ensuring the overall stability of the equipment during operation. The moving mechanism is driven by a servo motor. A cable chain 2 is fixedly installed on the upper part of the mounting platform 1, housing the equipment's cables such as power cords and signal lines. The cable chain extends and retracts synchronously with the sliding of the soldering mechanism 3, preventing cable tangling, wear, or pulling, protecting the wiring and extending its service life. The soldering mechanism 3 is fixedly installed on the lower part of the cable chain 2. The core component of the optical soldering system integrates laser generation and energy control functions. It moves along the slide rail 4 to perform precise soldering operations on the solder joints of the electricity meter. The soldering mechanism 3 is slidably connected to the mounting platform 1 via the slide rail 4, which provides sliding guidance for the soldering mechanism 3 and ensures its movement accuracy in the Y direction. The lower part of the soldering mechanism 3 is fixedly installed with a laser focusing lens group 6 via a disassembly and assembly component 5 to improve the laser energy density and ensure that the solder melts quickly and forms precise solder joints. The disassembly and assembly component 5 includes a retaining ring 51 fixedly connected to the outside of the laser focusing lens group 6 to limit the axial displacement of the socket 52 and prevent the laser focusing lens group 6 from falling out of the socket 52.

[0034] Reference Figure 1 - Figure 3 A retaining ring 51 and a sleeve 52 are fitted on the outside of the laser focusing lens assembly 6. The upper diameter of the sleeve 52 is larger than the lower diameter. It is an intermediate carrier connecting the laser focusing lens assembly 6 and the soldering mechanism 3. A patch 54 is fixedly connected to the upper part of the sleeve 52. The patch is made of a magnetically attracted metal such as iron or nickel. It works with the permanent magnet 53 to form the first layer of fixation, simplifying the installation steps. A permanent magnet 53 is fixedly connected to the lower part of the soldering mechanism 3. The permanent magnet 53 is set as a ring and is attracted to the patch 54 on the upper part of the sleeve 52 to achieve the initial positioning and pre-fixation of the laser focusing lens assembly 6. A connector 510 is fixedly connected to the inner wall of the sleeve 52. A slot 59 is opened on the soldering mechanism 3 near the lower part of the permanent magnet 53 to engage with the connector 510.

[0035] Reference Figure 1 - Figure 3The connector 510 includes a housing 55, which is fixedly connected to the inner wall of the sleeve 52. The housing 55 provides installation space for the slider 56. The slider 56 is slidably connected to the inner wall of the housing 55. Under the action of the elastic element 57, the slider 56 pushes the ball 58 to achieve engagement and disengagement. The ball 58 is movably connected to the side of the slider 56 near the center of the sleeve 52. The ball 58 is engaged in the inner wall of the slot 59. After the ball 58 is engaged in the slot 59, it forms a mechanical lock to prevent the laser focusing lens assembly 6 from loosening. At the same time, the rolling characteristics are used to compensate for installation deviations. The slider 56 and the housing 55 are elastically connected through the elastic element 57, which provides continuous elastic force to the ball 58 to ensure a tight engagement. During disassembly, the ball 58 is allowed to exit the slot 59 through deformation. The elastic element 57 includes a spring, one end of which is fixedly connected to the outside of the slider 56, and the other end of which is fixedly connected to the inner wall of the housing 55. The slot 59 is arranged around the lower outer side of the soldering mechanism 3. The inner wall of the slot 59 is set as an arc surface, which cooperates with the ball 58 to form a circumferential fixation, which not only ensures the connection stability, but also reduces wear during disassembly and assembly.

[0036] Reference Figure 1 , Figure 4 and Figure 5 This utility model provides a visual inspection device for electricity meters, including a monitoring camera 7 fixedly installed on the upper left side of a soldering mechanism 3 via a connecting component 8. The camera 7 is used to collect image information of the soldering process and solder joints, providing raw data for the visual inspection system and enabling real-time monitoring of the soldering status. The connecting component 8 includes a fixing seat 81, which is fixedly connected to the upper part of the soldering mechanism 3, providing a reference for camera angle positioning and serving as the basic fixing component of the connecting component 8. A connecting seat 82 is sleeved on the outside of the fixing seat 81, providing rotational support for the rotating component 83 and limiting the sliding direction of the locking plate 85 to ensure stability. The rotating component 83 is rotatably connected to the outside of the connecting seat 82, driving the locking plate 85 to rotate for disengagement and limiting. The rotating component 83 and the connecting seat 82 are elastically connected via a torsion spring 84, providing a reset spring force for the rotating component 83, ensuring that the locking plate 85 and the connecting groove 86 are tightly engaged, preventing the camera angle from shifting during equipment operation.

[0037] Furthermore, multiple sets of snap-fit ​​plates 85 are fixedly connected to the inner side of the rotating part 83 to fix the surveillance camera 7. The snap-fit ​​plates 85 slide on the inner wall of the connecting seat 82. The outer side of the fixing seat 81 is provided with an arc-shaped protrusion. A connecting groove 86 is opened at the arc-shaped protrusion of the fixing seat 81. The snap-fit ​​plates 85 and the connecting groove 86 are snap-fitted together. One end of the torsion spring 84 is fixedly connected to the inner wall of the rotating part 83, and the other end of the torsion spring 84 is fixedly connected to the inner wall of the connecting seat 82. By installing the connecting seat 82, different models of surveillance cameras 7 can be adapted without redesigning the installation structure, thus reducing the cost of equipment upgrades.

[0038] Working Principle: During use, the laser focusing lens assembly 6 is doubly fixed to the soldering mechanism 3 via the disassembly and assembly component 5, ensuring the stability of laser transmission. The sleeve 52 is fitted onto the outside of the laser focusing lens assembly 6. Its upper patch 54, made of magnetic metal, attracts the annular permanent magnet 53 at the bottom of the soldering mechanism 3, achieving initial positioning. Simultaneously, in the connector 510 on the inner wall of the sleeve 52, the elastic element 57, such as a spring, pushes the sliding element 56, causing the ball bearing 58 to engage with the slot 59 of the soldering mechanism 3. The slot 59 is arranged around the perimeter and has an arc-shaped inner wall, providing both mechanical locking via the ball bearing 58 and compensating for minor installation deviations, ensuring the coaxiality of the laser focusing lens assembly 6 and the soldering mechanism 3. The retaining ring 51 restricts the axial displacement of the sleeve 52. Combined with the "wider at the top and narrower at the bottom" structural design of the sleeve 52, this further enhances connection stability and prevents the laser focusing lens assembly 6 from falling off during welding vibrations.

[0039] When the laser focusing lens group 6 needs to be replaced due to lens wear, only external force needs to be applied to overcome the magnetic force of the permanent magnet 53 and the elastic force of the elastic element 57, so that the ball 58 can be disengaged from the slot 59, achieving tool-free disassembly. After replacement, the reverse operation can be used to re-fix it. If the monitoring camera 7 needs to be changed, it can be directly adapted through the modular design of the connector 82 without adjusting the fixing seat 81, which significantly shortens the maintenance time.

[0040] The laser beam emitted by the soldering mechanism 3 is focused into a high-density spot by the laser focusing lens group 6, precisely irradiating the areas of the energy meter to be soldered, such as the contact points between component leads and solder pads. The high energy density of the laser causes the solder wire or solder paste to melt instantly, filling the gaps between the solder joints under the action of surface tension, and forming a firm connection after cooling. Throughout the process, the buffering effect of the elastic element 57 absorbs equipment vibration, reduces laser focusing deviation, and ensures that the solder joints are of uniform size and free from defects such as cold solder joints or over-soldering.

[0041] The monitoring camera 7 is mounted on the left side of the soldering mechanism 3 via the connecting assembly 8, and acquires soldering images in real time. Its angle can be flexibly adjusted according to different electricity meter models. The fixing base 81 is fixed to the soldering mechanism 3, providing a reference for the detection device. During adjustment, rotating the rotating part 83 compresses the torsion spring 84 on the inner side and disengages it from the connecting groove 86 of the fixing base 81 for easy replacement. The monitoring camera 7 continuously captures images of the solder joints during the soldering process and transmits them to the back-end system in real time. The system analyzes the images to determine whether there are defects in the solder joints, such as missing solder, bridging, or insufficient solder.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A laser soldering device for electric energy meters, comprising a mounting table (1), characterized in that: A drag chain (2) is fixedly installed on the upper part of the mounting platform (1), and a soldering mechanism (3) is fixedly installed on the lower part of the drag chain (2). The soldering mechanism (3) is slidably connected to the mounting platform (1) via a slide rail (4). A laser focusing lens group (6) is fixedly installed on the lower part of the soldering mechanism (3) via a disassembly and assembly component (5). The assembly / disassembly component (5) includes a retaining ring (51) fixedly connected to the outside of the laser focusing lens group (6). A sleeve (52) is fitted on the outside of the retaining ring (51) and the laser focusing lens group (6). A patch (54) is fixedly connected to the upper part of the sleeve (52). A permanent magnet (53) is fixedly connected to the lower part of the soldering mechanism (3). A connector (510) is fixedly connected to the inner wall of the sleeve (52). A slot (59) is provided below the permanent magnet (53) of the soldering mechanism (3) to engage with the connector (510).

2. The laser soldering device for electric energy meter according to claim 1, characterized in that: The connector (510) includes a housing (55), which is fixedly connected to the inner wall of the sleeve (52). A sliding member (56) is slidably connected to the inner wall of the housing (55). A ball (58) is movably connected to the side of the sliding member (56) near the center of the sleeve (52). The ball (58) is engaged in the inner wall of the slot (59). The sliding member (56) and the housing (55) are elastically connected by an elastic member (57).

3. The laser soldering device for electric energy meter according to claim 2, characterized in that: The elastic element (57) includes a spring, one end of which is fixedly connected to the outside of the sliding element (56), and the other end of which is fixedly connected to the inner wall of the outer shell (55).

4. The laser soldering device for electric energy meter according to claim 1, characterized in that: The upper diameter of the socket (52) is larger than the lower diameter.

5. The laser soldering device for electric energy meter according to claim 1, characterized in that: The slot (59) is arranged around the lower outer side of the soldering mechanism (3), and the inner wall of the slot (59) is set as an arc surface.

6. A visual inspection device for an electric energy meter, comprising a laser soldering device for an electric energy meter according to any one of claims 1-5, characterized in that: The device includes a monitoring camera (7) that is fixedly mounted on the upper left side of the soldering mechanism (3) via a connecting assembly (8). The connecting assembly (8) includes a fixing seat (81) that is fixedly connected to the upper part of the soldering mechanism (3). A connecting seat (82) is sleeved on the outside of the fixing seat (81). A rotating component (83) is rotatably connected to the outside of the connecting seat (82). The rotating component (83) and the connecting seat (82) are elastically connected by a torsion spring (84).

7. A visual inspection device for an electricity meter according to claim 6, characterized in that: Multiple sets of snap-fit ​​plates (85) are fixedly connected to the inner side of the rotating part (83). The snap-fit ​​plates (85) slide on the inner wall of the connecting seat (82). An arc-shaped protrusion is provided on the outer side of the fixed seat (81). A connecting groove (86) is provided at the arc-shaped protrusion of the fixed seat (81). The snap-fit ​​plates (85) and the connecting groove (86) are snap-fitted together.

8. The visual inspection device for an electric energy meter according to claim 6, characterized in that: One end of the torsion spring (84) is fixedly connected to the inner wall of the rotating part (83), and the other end of the torsion spring (84) is fixedly connected to the inner wall of the connecting seat (82).

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