A surface laser heating welding apparatus

Abstract

The surface laser heating welding device provided by the application comprises a base, a surface laser heating assembly, a moving assembly and a bearing plate. The base comprises a welding area. The bearing plate is movably arranged on the base and is used for bearing a workpiece to be welded and moving the workpiece to be welded to the welding area. The moving assembly is fixedly arranged on the base, and the surface laser heating assembly is arranged at the output end of the moving assembly. The moving assembly is used for driving the surface laser heating assembly to move. The surface laser heating assembly comprises a plurality of surface laser emitters. The surface laser emitted by the surface laser emitters is directed towards the welding area and is used for irradiating a region of the workpiece to be welded. Compared with the prior art, the surface laser is used to irradiate a region of the workpiece to be welded for heating. The heating efficiency is higher, and the additional heat energy loss is very small. In addition, the surface laser heating assembly moves relative to the workpiece to be welded by the moving assembly, so that the region of the workpiece to be welded, where a component needs to be welded, can be more accurately aligned.

Description

Technical Field

[0001] This application relates to the field of welding equipment technology, and in particular to a surface laser heating welding device. Background Technology

[0002] Reflow ovens are commonly used heating and soldering equipment in the integrated circuit field. Generally, components on integrated circuit boards are soldered using a reflow oven. During soldering, the integrated circuit board is typically placed inside the heating chamber of the reflow oven. The reflow oven heats the surrounding air through heating tubes and uses a fan to blow the hot air onto the integrated circuit board inside the heating chamber, thus heating the entire board and melting the solder paste in each soldering area. This heating method requires heating the entire integrated circuit board, resulting in low heating efficiency and high wasted energy during the soldering process.

[0003] Therefore, the above problems need to be addressed. Utility Model Content

[0004] This application provides a surface laser heating welding device with high heating efficiency and low waste energy consumption during the welding process.

[0005] The surface laser heating welding equipment includes a base, a surface laser heating component, a moving component, and a support plate. The base includes a welding area. The support plate is movably disposed on the base and is used to carry the workpiece to be welded and move the workpiece to the welding area. The moving component is disposed on the base, and the surface laser heating component is disposed at the output end of the moving component. The moving component is used to drive the surface laser heating component to move relative to the base, so that the surface laser heating component can be moved to the welding area. The surface laser heating component includes a plurality of surface laser emitters, and the surface laser emitted by the surface laser emitters is directed toward the welding area to irradiate the workpiece to be welded within the welding area.

[0006] Compared with existing technologies, the surface laser heating welding equipment provided in this application provides a surface laser heating welding device that uses a support plate on a base to transfer and support the workpiece to be welded in the welding area on the base. It also includes a surface laser heating component that emits surface laser light towards the welding area, thereby providing targeted irradiation and heating of the workpiece within the welding area. Therefore, compared to the overall heating of a reflow oven, the surface laser heating welding equipment of this application provides targeted heating of the areas on the workpiece requiring welding components by irradiating specific areas with surface laser light. This results in higher heating efficiency and significantly less extra heat loss, greatly reducing wasted energy during the welding process. Furthermore, the surface laser heating component can move relative to the workpiece via a moving component, and the workpiece can also move relative to the base. Therefore, the surface laser emitted by the surface laser emitter of the surface laser heating component can more accurately align with the areas on the workpiece requiring welding components.

[0007] Specifically, the surface laser emitters are arranged in an array, and each surface laser emitter operates independently of the others.

[0008] Specifically, the moving component includes a fixed bracket, a guide rail, a connecting slider, and a drive motor. The fixed bracket is disposed on the base, the guide rail is disposed on the fixed bracket, the connecting slider is slidably connected to the guide rail, the surface laser heating component is disposed on the connecting slider, and the drive motor is disposed on the fixed bracket with its output end connected to the connecting slider, thereby driving the surface laser heating component to move along the guide rail.

[0009] Specifically, a conveying assembly is provided between the support plate and the base. The conveying assembly is connected to the base and also contacts the support plate, for driving the support plate to move to the welding area or driving the support plate away from the welding area.

[0010] Specifically, the conveying assembly includes a support frame, a conveying shaft, conveying rollers, and a conveying motor. The support frame is fixed to the base, and both ends of the conveying shaft are rotatably mounted on the support frame. The conveying rollers are fixed to the conveying shaft and are used to contact the support plate. The output end of the conveying motor is connected to the conveying shaft and is used to drive the support plate to move relative to the welding area.

[0011] Specifically, the surface laser heating welding equipment further includes a lifting assembly, which is disposed between the base and the support plate. The lifting assembly is used to drive the support plate to rise to disengage from the conveying assembly or to drive the support plate to fall to contact the conveying assembly.

[0012] Specifically, the lifting assembly includes a lifting platform and a lifting cylinder. The lifting cylinder is fixed to the base, and the output end of the lifting cylinder is connected to the lifting platform. The lifting platform faces the support plate.

[0013] Specifically, the surface laser heating welding equipment also includes a laser thermometer, which is mounted on the base and is used to measure the surface temperature of the workpiece to be welded. The laser thermometer is also communicatively connected to the surface laser heating assembly to provide feedback on the surface temperature of the workpiece to be welded. The surface laser heating assembly can adjust its output power according to the surface temperature of the workpiece to be welded fed back by the laser thermometer.

[0014] Specifically, the surface laser heating welding equipment further includes a laser pointer, which is disposed on the base and is used to emit laser light towards the workpiece to be welded and form a marking spot on the surface of the workpiece.

[0015] Specifically, the surface laser heating welding equipment also includes a cooler, which is used to deliver a cooling medium to the surface laser heating component to cool the surface laser heating component. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is an assembly diagram of a laser heating welding device according to an embodiment of this application;

[0018] Figure 2 This is a perspective view of the laser heating welding equipment according to an embodiment of this application after part of the housing has been removed;

[0019] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0020] Figure 4 This is a side view of the laser heating welding apparatus according to an embodiment of this application after part of the housing has been removed;

[0021] Figure 5 This is a frontal projection view of the surface laser heating assembly of the surface laser heating welding equipment according to an embodiment of this application, showing the surface laser emitter, cooling interface, and inert gas interface.

[0022] The attached figures are labeled as follows:

[0023] 100-Surface laser heating welding equipment, 1-Base, 2-Surface laser heating component, 21-Surface laser emitter, 22-Cooling interface, 23-Cooling pipe, 24-Inert gas interface, 3-Moving component, 31-Fixed bracket, 32-Guide slide rail, 33-Connecting slider, 34-Drive motor, 4-Bearing plate, 5-Transfer component, 51-Support frame, 52-Transfer shaft, 521-Driven sprocket, 53-Transfer roller, 54-Transfer motor, 541-Drive sprocket, 6-Lifting component, 61-Lifting platform, 62-Lifting cylinder, 7-Laser thermometer, 8-Laser indicator, 200-Workpiece to be welded. Detailed Implementation

[0024] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0025] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc. (if present), indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing the embodiments of this application and for 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 the embodiments of this application. Furthermore, the terms "first," "second," and "third" are used only for descriptive purposes such as distinguishing similar objects, and should not be construed as indicating or implying relative importance or order.

[0026] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0027] Please see Figures 1-2The surface laser heating welding equipment 100 provided in this application embodiment includes a base 1, a surface laser heating component 2, a moving component 3, and a support plate 4. The base 1 includes a welding area; the support plate 4 is movably disposed above the base 1, and the support plate 1 is used to support the workpiece 200 to be welded and to move the workpiece 200 to be welded to the welding area on the base 1. The moving component 3 is fixedly disposed on the base 1 and located above the support plate 4. The surface laser heating component 2 is disposed at the output end of the moving component 4, and the moving component 4 is used to drive the surface laser heating component 2 to move relative to the base 1, so that the surface laser heating component 2 can be moved above the welding area.

[0028] The surface laser heating assembly 2 includes several surface laser emitters 21. The surface laser emitted by the surface laser emitters 21 is directed towards the welding area to irradiate a specific area of ​​the workpiece 200 to be welded, thereby heating the workpiece 200. Specifically, each surface laser emitter 21 integrates multiple lasers arranged in an array, and the lasers emitted by each laser are superimposed within the welding area to form a surface laser. The lasers are selected from existing semiconductor lasers that meet the heating requirements.

[0029] Further reading Figure 5 The surface laser emitters 21 are also arranged in an array on the surface laser heating assembly 2. To flexibly control the surface laser output from each surface laser emitter 21, each surface laser emitter 21 operates independently. Each independently operating surface laser emitter 21 can further subdivide the entire surface laser irradiation area. For example, by controlling the start and stop of surface laser emitters 21 at different positions, multiple smaller surface laser irradiation areas can be formed, thereby improving the accuracy of the irradiation area and making heating faster, thus further improving heating efficiency while reducing waste energy consumption.

[0030] Further reading Figure 2 and Figure 4 The movable component 3 includes a fixed bracket 31 along a first direction (e.g., Figure 2The system comprises a guide rail 32 (extending in the X direction), a connecting slider 33, and a drive motor 34. A fixed bracket 31 is connected to both sides of the base 1. The guide rail 32 is mounted on the fixed bracket 31, and the connecting slider 33 is slidably connected to the guide rail 32. The surface laser heating component 2 is mounted on the connecting slider 33. The drive motor 34 is fixed to the fixed bracket 31, and its output end is connected to the connecting slider 33, thereby driving the surface laser heating component 2 to move along the guide rail 32. To improve the stability of the movement, in this embodiment, each guide rail 32 is provided with two connecting sliders 33. In this way, each end of the surface laser heating component 2 connected to the connecting slider 33 is connected to two connecting sliders 33, and the force borne by each connecting slider 33 is reduced, which can reduce the wear between the connecting slider 33 and the guide rail 32. In this embodiment, the drive motor 34 is a readily available servo motor that meets the usage requirements.

[0031] Further reading Figure 2 and Figure 4 A conveying assembly 5 is provided between the support plate 4 and the base 1. The conveying assembly 5 is connected to the base 1 and also contacts the support plate 4, used to drive the support plate 4 to move to the welding area or drive the support plate 4 away from the welding area. Specifically, the conveying assembly 5 includes a support frame 51, a conveying shaft 52, conveying rollers 53, and a conveying motor 54. The support frame 51 is fixed to both sides of the base 1. The two ends of the conveying shaft 52 are rotatably mounted on the support frame 51. The conveying rollers 53 are fixedly sleeved on the conveying shaft 52 and are used to contact the support plate 4. The output end of the conveying motor 54 is connected to the conveying shaft 52 and is used to drive the support plate 4 to move relative to the welding area. More specifically, the output end of the conveying motor 54 is provided with a drive sprocket 541, and one end of each conveying shaft 52 is fixedly provided with a driven sprocket 521. The drive sprocket 541 and an adjacent driven sprocket 521 are connected by a meshing chain drive, and two adjacent driven sprockets 521 are also connected by a meshing chain drive. In addition, the support frame 51 is equipped with multiple drive shafts 52, and each drive shaft 52 is equipped with four equally spaced conveyor rollers 53. The four conveyor rollers 53 are in static friction contact with the support plate 4, that is, there is no relative sliding between the conveyor rollers 53 and the support plate 4. Therefore, when the conveyor motor 54 drives the drive shafts 52 and the conveyor rollers 53 to rotate, the support plate 4 moves relative to the moving base 1 as the conveyor rollers 53 rotate. In this embodiment, the conveyor motor 54 is also selected as a servo motor that meets the functional requirements.

[0032] Further reading Figure 2 and Figure 4The laser heating welding equipment 100 also includes a lifting assembly 6, which is also disposed between the base 1 and the support plate 4. The lifting assembly 6 is used to drive the support plate 4 to rise to disengage from the conveying assembly 5 or to drive the support plate 4 to fall to contact the conveying assembly 5. Specifically, the lifting assembly 6 includes a lifting platform 61 and a lifting cylinder 62. The lifting cylinder 62 is fixed to the base 1, and the output end of the lifting cylinder 62 is connected to the lifting platform 61, which faces the support plate 4. In this embodiment, the lifting cylinder 62 is a hydraulic cylinder that meets the usage requirements.

[0033] Further reading Figures 2-3 The surface laser heating welding equipment 100 also includes a laser thermometer 7, which is mounted on the base 1. The laser thermometer 7 is used to measure the surface temperature of the workpiece 200 to be welded. The laser thermometer 7 is also communicatively connected to the surface laser heating assembly 2 to provide feedback on the surface temperature of the workpiece 200. The surface laser heating assembly 2 can adjust its output power according to the surface temperature of the workpiece 200 fed back by the laser thermometer 7. Specifically, the surface laser heating assembly 2 also includes a control board, which can receive the surface temperature of the workpiece 200 fed back by the laser thermometer 7 and adjust the output power of the surface laser emitter 21 according to the temperature value so that the surface temperature of the workpiece 200 reaches a suitable range for welding. In this embodiment, the base 1 is provided with three independently operating laser thermometers 7, so that the temperature of the three areas of the workpiece 200 to be welded can be measured independently. The control board is provided with several control chips, which are existing silicon-based chips that meet the functional requirements. The laser thermometer 7 is an existing non-contact infrared thermometer that meets the temperature measurement requirements.

[0034] Further reading Figures 2-3 The surface laser heating welding equipment 100 also includes a laser pointer 8, which is mounted on the base 1 and is used to emit laser light towards the workpiece 200 to be welded, forming a marking spot on the surface of the workpiece 200. This facilitates the laser thermometer 7 to accurately measure the surface temperature of the marked workpiece 200. Since there are three laser thermometers 7, there are also three laser pointers 8, each individually indicating its temperature measurement area. In this embodiment, the laser pointer 8 is a readily available ring laser pointer that meets the usage requirements.

[0035] Further reading Figure 2 , Figure 4 and Figure 5To promptly cool the surface laser heating component 2, the surface laser heating welding equipment 100 also includes a cooler (not shown in the figure). The cooler supplies a cooling medium to the surface laser heating component 2, thereby cooling it. Specifically, the surface laser heating component 2 also includes a cooling interface 22, which is connected to the surface laser emitter 21. The cooler includes a cooling pipe 23 for supplying the cooling medium, which can be connected to the cooling interface 22 to supply the cooling medium to the surface laser emitter 21, thereby cooling it. In this embodiment, a conventional water-cooled cooler is used, and the cooling medium is cooling water.

[0036] In addition, in order to prevent the chip inside the surface laser emitter 21 from oxidizing, the surface laser heating assembly 2 also includes an inert gas interface 24, which can introduce inert gas into the surface laser emitter 21 through a corresponding connecting pipe to purge the internal oxygen.

[0037] The following is an introduction to the working principle of the surface laser heating welding equipment 100 according to an embodiment of this application. When welding is required on the workpiece 200, the conveying assembly 5 is started first, and then the workpiece 200 is placed on the support plate 4. The support plate 4 is then placed on the conveying assembly 5. Under the action of the conveying rollers 53 of the conveying assembly 5, the support plate 4 and the workpiece 200 are conveyed together to the welding area on the base 1. At this time, the lifting assembly 6 is started to lift the support plate 4 and the workpiece 200 and separate them from the conveying assembly 5. Then, the moving assembly 3 is started to drive the surface laser heating assembly 2 to move above the workpiece 200 and align the surface laser emitter 21 with the area of ​​the workpiece 200 where the welding components need to be welded. Once the relative positions of the surface laser heating assembly 2 and the workpiece 200 to be welded are adjusted, the surface laser heating assembly 2 is activated to heat the workpiece 200. During the heating process, the laser thermometer 7, in conjunction with the laser indicator 8, performs real-time temperature detection on the surface area of ​​the workpiece 200. The laser thermometer 7 provides real-time feedback on the surface temperature of the workpiece 200 to the surface laser heating assembly 2. Based on the surface temperature feedback from the laser thermometer 7, the surface laser heating assembly 2 adjusts the output power of the surface laser emitter 21 to ensure that the surface temperature of the workpiece 200 is within a suitable welding temperature range. After the workpiece 200 is welded, the lifting assembly 6 is activated again, causing the support plate 4 to descend and re-engage with the conveyor roller 53. This allows the workpiece 200 to be conveyed along with the support plate 4 to the outside of the welding area of ​​the base 1 and eventually leave the base 1. At this point, a new workpiece 200 can be placed on the support plate 4 and moved to the welding area of ​​the base 1 via the conveyor assembly 5 for heating and welding.

[0038] Compared with the prior art, the surface laser heating welding equipment 100 provided in this application provides a surface laser heating welding device 100 that uses a support plate 4 on a base 1 to transfer and support the workpiece 200 to be welded in the welding area on the base 1. It also provides a surface laser heating component 2 that emits surface laser light towards the welding area, thereby irradiating a specific area of ​​the workpiece 200 to be welded within the welding area for targeted heating. Therefore, compared with the overall heating of a reflow oven, the surface laser heating welding equipment 100 of this application uses surface laser light to irradiate a specific area of ​​the workpiece 200 to be welded, thereby targeting the location of the component to be welded on the workpiece 200 for targeted heating. This results in higher heating efficiency and very little additional heat loss, greatly reducing useless energy consumption during the welding process. Furthermore, the surface laser heating component 2 can move relative to the workpiece 200 to be welded via a moving component 3, and the workpiece 200 can also move relative to the base 1. Therefore, the surface laser emitted by the surface laser emitter 21 of the surface laser heating component 2 can more accurately target the area of ​​the workpiece 200 to be welded for the component to be welded.

[0039] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications 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 this application.

Claims

1. A surface laser heating welding device, characterized in that, The device includes a base, a surface laser heating component, a moving component, and a support plate. The base includes a welding area. The support plate is movably disposed on the base and is used to carry the workpiece to be welded and move the workpiece to the welding area. The moving component is disposed on the base, and the surface laser heating component is disposed at the output end of the moving component. The moving component is used to drive the surface laser heating component to move relative to the base, so that the surface laser heating component can be moved to the welding area. The surface laser heating component includes a plurality of surface laser emitters, and the surface laser emitted by the surface laser emitters is directed toward the welding area for irradiating the workpiece to be welded within the welding area.

2. The surface laser heating welding equipment according to claim 1, characterized in that, The surface laser emitters are arranged in an array, and each surface laser emitter operates independently of the others.

3. The surface laser heating welding equipment according to claim 1, characterized in that, The moving component includes a fixed bracket, a guide rail, a connecting slider, and a drive motor. The fixed bracket is disposed on the base, the guide rail is disposed on the fixed bracket, the connecting slider is slidably connected to the guide rail, the surface laser heating component is disposed on the connecting slider, and the drive motor is disposed on the fixed bracket with its output end connected to the connecting slider, thereby driving the surface laser heating component to move along the guide rail.

4. The surface laser heating welding equipment according to claim 1, characterized in that, A conveying assembly is provided between the support plate and the base. The conveying assembly is connected to the base and also contacts the support plate, for driving the support plate to move to the welding area or driving the support plate away from the welding area.

5. The surface laser heating welding equipment according to claim 4, characterized in that, The conveying assembly includes a support frame, a conveying shaft, conveying rollers, and a conveying motor. The support frame is fixed to the base, and both ends of the conveying shaft are rotatably mounted on the support frame. The conveying rollers are fixed to the conveying shaft and are used to contact the support plate. The output end of the conveying motor is connected to the conveying shaft and is used to drive the support plate to move relative to the welding area.

6. The surface laser heating welding equipment according to claim 4, characterized in that, The surface laser heating welding equipment also includes a lifting assembly, which is disposed between the base and the support plate. The lifting assembly is used to drive the support plate to rise to disengage from the conveying assembly or to drive the support plate to fall to contact the conveying assembly.

7. The surface laser heating welding equipment according to claim 6, characterized in that, The lifting assembly includes a lifting platform and a lifting cylinder. The lifting cylinder is fixed to the base, and the output end of the lifting cylinder is connected to the lifting platform. The lifting platform faces the support plate.

8. The surface laser heating welding equipment according to claim 1, characterized in that, The surface laser heating welding equipment also includes a laser temperature measuring instrument, which is mounted on the base. The laser temperature measuring instrument is communicatively connected to the surface laser heating component to provide feedback on the surface temperature of the workpiece to be welded. The surface laser heating component can adjust its output power according to the surface temperature of the workpiece to be welded fed back by the laser temperature measuring instrument.

9. The surface laser heating welding equipment according to claim 8, characterized in that, The surface laser heating welding equipment also includes a laser pointer, which is disposed on the base and is used to emit laser light towards the workpiece to be welded and form a marking spot on the surface of the workpiece.

10. The surface laser heating welding equipment according to claim 1, characterized in that, The surface laser heating welding equipment also includes a cooler, which is used to deliver a cooling medium to the surface laser heating component to cool it down.

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