Laptop keyboard laser welding device

Abstract

The utility model provides a notebook keyboard laser welding device. The notebook keyboard laser welding device comprises a working platform, a laser welding assembly, a pressing jig and an X / Y / Z driving assembly. The pressing jig is located below the laser welding assembly and comprises a lower bottom plate and an upper pressing plate, the lower bottom plate is provided with a positioning groove used for bearing and positioning a keyboard workpiece to be welded, and the upper pressing plate is pressed on the keyboard workpiece to be welded of the lower bottom plate; and a welding window through which laser emitted by the laser welding assembly penetrates is formed in the position, corresponding to the positioning groove, of the upper pressing plate. According to the utility model, the laser welding assembly is used for carrying out laser welding processing on the processing target acupoints of the keyboard workpiece to be welded, so that the processing efficiency is improved, meanwhile, the rivet consumable cost is saved, and the production cost is reduced; and in the laser welding process, the press-fit jig is used for conducting press-fit positioning on the keyboard workpiece to be welded, it is guaranteed that the two welding materials of the keyboard workpiece to be welded make close contact, and the welding quality is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of keyboard welding processing, and particularly relates to a laser welding device for a notebook keyboard. Background Art

[0002] At present, the key part and the aluminum frame of most notebook keyboards are fixed and installed by rivets. That is, after the key part is installed on the shell, rivets are used to rivet between the keys of the keyboard through a riveting machine to achieve the installation and fixation of the keyboard body. However, this method of fixing the keyboard by rivets has the following problems: (1) The rivet machine needs to arrange the rivet direction and then pick up the material, then locate and find the corresponding position, and then press down to fix a point, and finally repeat this process to fix the entire keyboard surface; in order to fix each rivet, it often takes a lot of time to pick up the material and then fix it, which greatly increases the production time and thus increases the production cost; (2) Rivets themselves are also consumables. Each keyboard produced will consume more than 100 rivets, which also increases the production cost invisibly; (3) In actual production, due to the large number of steps, the riveting machine will often have the problem of rivets falling into the customer's product, resulting in the keyboard keys not being pressed, resulting in defective products, and failing to meet production needs well. Utility Model Content

[0003] The purpose of the utility model is to provide a notebook keyboard laser welding device, which can at least solve some of the defects in the prior art.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A laser welding device for a laptop keyboard comprises a work platform, a laser welding assembly arranged on the work platform, a pressing jig for pressing a keyboard workpiece to be welded, and an X / Y / Z drive assembly for adjusting the position of the laser welding assembly; the pressing jig is located below the laser welding assembly, the pressing jig comprises a lower base plate and an upper pressing plate, the lower base plate has a positioning groove for supporting and positioning the keyboard workpiece to be welded, the upper pressing plate is pressed onto the keyboard workpiece to be welded on the lower base plate, and a welding window is provided on the upper pressing plate corresponding to the positioning groove for the laser emitted by the laser welding assembly to pass through.

[0006] Furthermore, the shape and size of the positioning groove are consistent with the shape and size of the keyboard workpiece to be welded.

[0007] Furthermore, the depth of the positioning groove is slightly smaller than the thickness of the keyboard workpiece to be welded.

[0008] Furthermore, both ends of the upper pressing plate are connected to a first driving member for driving the upper pressing plate to move up and down to press the keyboard workpiece to be welded.

[0009] Furthermore, the above-mentioned notebook keyboard laser welding device also includes a second driving member for driving the lower base plate to approach / move away from the laser welding assembly.

[0010] Furthermore, the lower base plate is detachably connected to the second driving member.

[0011] Furthermore, the laser welding assembly includes a laser, a collimating mirror, a galvanometer, and a lens arranged in sequence along the laser transmission path emitted by the laser, and a positioning vision dual camera for locating the laser welding position.

[0012] Furthermore, the laser is a nanosecond laser.

[0013] Furthermore, the laser welding assembly also includes an energy monitor for monitoring laser energy.

[0014] Furthermore, the X / Y / Z drive assembly includes an X-axis module, a Y-axis module and a movable Z-axis, the X-axis module is slidably connected to the Y-axis module, the movable Z-axis is slidably connected to the X-axis module, and the laser welding assembly is installed on the movable Z-axis.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The notebook keyboard laser welding device provided by the utility model uses a laser welding component to perform laser welding processing on the processing target acupuncture points of the keyboard workpiece to be welded, thereby improving the processing efficiency, saving the cost of rivet consumables, and reducing production costs; and a pressing fixture is used during the laser welding process to press and position the keyboard workpiece to be welded, ensuring close contact between the two welding materials of the keyboard workpiece to be welded, thereby improving the welding quality.

[0017] The present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the utility model's laser welding device for notebook keyboards;

[0019] Figure 2 This is a structural diagram of a pressing jig in an embodiment of the present utility model;

[0020] Figure 3 This is a schematic diagram of the installation of a keyboard workpiece to be welded on the lower base plate of a pressing fixture in an embodiment of the present utility model;

[0021] Figure 4 This is a schematic diagram of a keyboard workpiece to be welded in an embodiment of the present invention.

[0022] Explanation of the accompanying drawings: 1. Working platform; 2. Y-axis module; 3. X-axis module; 4. Moving Z-axis; 5. Energy monitor; 6. Laser; 7. Positioning vision dual camera; 8. Pressing fixture; 9. Second driving member; 10. Lower base plate; 11. Upper pressure plate; 12. Welding window; 13. First driving member; 14. Positioning groove; 15. Aluminum frame shell; 16. Stainless steel button part; 17. Processing target acupoint. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect" and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, a conflicting connection or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] 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 quantity of the technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of such features; and in the description of this utility model, unless otherwise specified, "plurality" means two or more.

[0027] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown, this embodiment provides a laptop keyboard laser welding device, including a work platform 1, a laser welding assembly arranged on the work platform 1, a pressing jig 8 for pressing the keyboard workpiece to be welded, and an X / Y / Z drive assembly for adjusting the position of the laser welding assembly; the pressing jig 8 is located below the laser welding assembly, and the pressing jig 8 includes a lower base plate 10 and an upper pressing plate 11, the lower base plate 10 has a positioning groove 14 for supporting and positioning the keyboard workpiece to be welded, the upper pressing plate 11 is pressed onto the keyboard workpiece to be welded on the lower base plate 10, and a welding window 12 for the laser emitted by the laser welding assembly to pass through is provided on the upper pressing plate 11 corresponding to the positioning groove 14. In this embodiment, the two material parts of the keyboard workpiece to be welded (i.e., the aluminum frame shell 15 and the stainless steel key portion 16) are first combined together, the keyboard workpiece to be welded is placed in the positioning groove 14 of the lower base plate 10, and the upper pressing plate 11 is then used to press the two materials of the keyboard workpiece to be welded on the lower base plate 10. The pressed keyboard workpiece to be welded is placed under the laser welding assembly. The position of the laser welding assembly is adjusted by the X / Y / Z drive assembly so that the laser focus is positioned on the keyboard workpiece to be welded. The laser emitted by the laser welding assembly passes through the welding window 12 on the upper pressing plate 11 to weld and fix the processing target acupuncture points 17 of the two material parts of the keyboard workpiece to be welded. The laptop keyboard laser welding device provided in this embodiment uses the laser welding assembly to perform laser welding processing on the processing target acupuncture points 17 of the keyboard workpiece to be welded, thereby improving processing efficiency, eliminating the cost of rivet consumables, and reducing production costs. In addition, a pressing fixture 8 is used to press and position the keyboard workpiece to be welded during the laser welding process, ensuring close contact between the two welding materials of the keyboard workpiece to be welded, thereby improving welding quality.

[0028] In a more detailed embodiment, the laser welding assembly includes a laser 6, a collimator, a galvanometer, and a lens arranged in sequence along the laser transmission path emitted by the laser 6, and a positioning vision dual camera 7 for locating the laser welding position. During operation, the laser light emitted by the laser 6 is converted into parallel light by the collimator, then emitted through the galvanometer, focused by the lens, and finally emitted onto the pressed keyboard workpiece to be welded.

[0029] Preferably, since the two material parts of the keyboard workpiece to be welded are two dissimilar materials (i.e., stainless steel welding aluminum), the laser 6 uses a nanosecond laser. The laser has a narrow pulse width, high frequency, small thermal impact of welding, and good welding performance for dissimilar metals. The parameter settings of the laser 6 can be designed according to the actual welding processing requirements.

[0030] Furthermore, the laser welding assembly further includes an energy monitor 5 for monitoring laser energy to ensure the stability of the laser energy incident on the keyboard workpiece to be welded, thereby improving the laser welding processing quality of the keyboard workpiece to be welded.

[0031] As a specific embodiment, the X / Y / Z drive assembly includes an X-axis module 3, a Y-axis module 2, and a mobile Z-axis 4. The X-axis module 3 is slidably connected to the Y-axis module 2, the mobile Z-axis 4 is slidably connected to the X-axis module 3, and the laser welding assembly is mounted on the mobile Z-axis 4. In this embodiment, the keyboard workpiece to be welded is horizontally mounted on the pressing jig 8, and the mobile Z-axis 4 is mounted perpendicular to the horizontal plane. During operation, the focus of the laser marking is positioned on the keyboard workpiece to be welded by moving the mobile Z-axis 4. At the same time, the position of the laser focus in the X and Y directions of the keyboard workpiece to be welded is controlled by moving the X-axis module 3 and the Y-axis module 2, thereby achieving laser positioning processing of the target acupuncture point 17 on the keyboard workpiece to be welded.

[0032] As for the pressing method of the pressing jig 8 for the keyboard workpiece to be welded, preferably, the shape and size of the positioning groove 14 of the lower base plate 10 are designed to be consistent with the shape and size of the keyboard workpiece to be welded. Specifically, the shape and size of the positioning groove 14 are consistent with the shape and size of the aluminum frame shell 15 of the keyboard workpiece to be welded. In this way, the keyboard workpiece to be welded can be embedded in the positioning groove 14, and the positioning groove 14 can be used to perform preliminary positioning of the keyboard workpiece to be welded. At the same time, the upper pressing plate 11 is used to press the edge of the stainless steel key part 16 of the keyboard workpiece to be welded to achieve compact positioning of the keyboard workpiece to be welded, thereby ensuring that the keyboard workpiece to be welded will not move during the laser welding process.

[0033] Furthermore, the depth of the positioning groove 14 is designed to be slightly smaller than the thickness of the keyboard workpiece to be welded, so as to facilitate the loading and unloading of the keyboard workpiece to be welded, and at the same time, the upper pressing plate 11 can directly contact and press the keyboard workpiece to be welded when pressing the keyboard workpiece to be welded.

[0034] Optionally, first drive members 13 are connected to both ends of the upper pressing plate 11 to drive the upper pressing plate 11 up and down to press the keyboard workpiece to be welded; wherein, the first drive member 13 can be, but is not limited to, a cylinder, a hydraulic cylinder, etc. Furthermore, the lower base plate 10 is designed to be slidably connected to a second drive member 9, which is arranged between the two first drive members 13, and is used to drive the lower base plate 10 toward or away from the laser welding assembly; wherein, the second drive member 9 can be, but is not limited to, a cylinder slide, a movable module, etc. After the keyboard workpiece to be welded is loaded into the positioning groove 14 of the lower base plate 10, the second driving member 9 drives the lower base plate 10 to drive the keyboard workpiece to be welded to approach the laser welding assembly until it is directly below the upper pressure plate 11. Then the upper pressure plate 11 is driven down by the first driving member 13 to be pressed on the stainless steel key part 16 of the keyboard workpiece to be welded, so that the two material parts of the keyboard workpiece to be welded are in close contact, and then the two material parts of the keyboard workpiece to be welded are laser welded by the laser welding assembly; after the welding is completed, the first driving member 13 drives the upper pressure plate 11 to rise, and the second driving member 9 drives the lower base plate 10 away from the laser welding assembly to take the welded workpiece on the lower base plate 10.

[0035] Preferably, the lower base plate 10 is detachably connected to the second driving member 9 so as to replace different lower base plates 10 to adapt to the processing of keyboard workpieces of different sizes to be welded.

[0036] The above examples are merely illustrative of the present invention and do not limit the scope of protection of the present invention. Any design that is identical or similar to the present invention falls within the scope of protection of the present invention.

Claims

1. A laser welding device for a notebook keyboard, characterized by: It includes a work platform, a laser welding assembly arranged on the work platform, a pressing jig for pressing the keyboard workpiece to be welded, and an X / Y / Z drive assembly for adjusting the position of the laser welding assembly; the pressing jig is located below the laser welding assembly, and the pressing jig includes a lower base plate and an upper pressing plate, the lower base plate has a positioning groove for supporting and positioning the keyboard workpiece to be welded, the upper pressing plate is pressed onto the keyboard workpiece to be welded on the lower base plate, and a welding window is provided on the upper pressing plate corresponding to the positioning groove for the laser emitted by the laser welding assembly to pass through.

2. The laser welding device for a laptop keyboard according to claim 1, wherein: The shape and size of the positioning groove are consistent with the shape and size of the keyboard workpiece to be welded.

3. The laser welding device for a laptop keyboard according to claim 2, wherein: The depth of the positioning groove is slightly smaller than the thickness of the keyboard workpiece to be welded.

4. The laser welding device for a laptop keyboard according to claim 1, wherein: Both ends of the upper pressing plate are connected with a first driving member for driving the upper pressing plate to move up and down to press the keyboard workpiece to be welded.

5. The laser welding device for a laptop keyboard according to claim 1, wherein: The device further comprises a second driving member for driving the lower base plate to approach or move away from the laser welding assembly.

6. The laser welding device for a laptop keyboard according to claim 5, characterized in that: The lower base plate is detachably connected to the second driving member.

7. The laser welding device for a laptop keyboard according to claim 1, wherein: The laser welding assembly includes a laser, a collimating mirror, a galvanometer, and a lens arranged in sequence along the laser transmission path emitted by the laser, and a positioning vision dual camera for locating the laser welding position.

8. The laser welding device for a laptop keyboard according to claim 7, wherein: The laser is a nanosecond laser.

9. The laser welding device for a laptop keyboard according to claim 7, wherein: The laser welding assembly further includes an energy monitor for monitoring laser energy.

10. The laser welding device for a laptop keyboard according to claim 1, wherein: The X / Y / Z drive assembly includes an X-axis module, a Y-axis module and a movable Z-axis. The X-axis module is slidably connected to the Y-axis module, the movable Z-axis is slidably connected to the X-axis module, and the laser welding assembly is installed on the movable Z-axis.

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