A laptop casing processing and welding equipment

Abstract

This invention relates to the field of metal welding technology and discloses a welding device for processing laptop casings. The device includes a reaction tank containing an electrolyte solution, a conductive section installed inside and at the bottom of the reaction tank for cathodic protection of the laptop casing, a circulation section installed at the bottom of the reaction tank for circulating the solution to separate hydrogen bubbles from the flow, a convection section installed on the reaction tank for convection between the solution and the circulation section to detach hydrogen bubbles from the electrode surface, and a clamping section installed at the edge of the reaction tank. Cathodic protection is used to inhibit metal corrosion. A cathodic protection current is applied to the laptop casing through the conductive section, making it a cathode, thereby inhibiting and slowing down metal corrosion at high welding temperatures, reducing the oxidation area of ​​the weld joint, preventing further oxidation diffusion, and improving welding safety, weld joint precision, and welding quality.

Description

Technical Field

[0001] This invention relates to the field of metal welding technology, specifically to a welding device for processing laptop casings. Background Technology

[0002] Some high-end laptops use metal casings or metal decorations and brackets on the casings. When connecting these metal parts, such as metal frame connections, metal casing and metal accessories connections, and decorative metal parts connections, welding processes are used. Laser welding can achieve high-precision and aesthetically pleasing connections.

[0003] According to Chinese Patent Publication No. CN117961367B, this patent relates to a metal shell welding device, including a spot welding mechanism and a welding base. The spot welding mechanism includes a monitoring module, and the welding base includes a control module. The monitoring module includes a current sensor, a magnetoresistive sensor, and a built-in analysis chip. The control module includes an electromagnetic compensation coil. The current sensor acquires the original current signal and transmits it to the built-in analysis chip. The magnetoresistive sensor acquires the magnetic induction signal and transmits it to the built-in analysis chip. A current-magnetic field influence model is obtained by fitting the denoised current signal and the magnetic induction signal. The current-magnetic field influence model represents the correspondence between current and magnetic field in the corresponding application scenario. By combining this correspondence, magnetic field compensation is achieved, thereby making the fixation of the metal shell more stable, ensuring stable fixation during the welding process, avoiding displacement of the metal shell due to the weakening of the magnetic field during welding, and improving the welding effect.

[0004] However, during welding, the high temperature increases the activity of metal atoms, making it easier for oxygen in the surrounding air to combine with them, leading to accelerated metal oxidation. This is especially problematic for high-quality products like laptop casings, where extensive oxidation at the solder joints can negatively impact aesthetics and overall product quality. Therefore, this paper proposes a welding equipment for laptop casing processing to address these issues. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a laptop casing processing and welding device that solves the problem that high welding temperatures accelerate metal oxidation, leading to large-area oxidation contamination at the solder joints that affects the aesthetics of the laptop casing and the quality of the finished product.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention provides the following technical solution: a laptop casing processing and welding device, comprising a reaction tank containing an electrolyte solution, a conductive part installed inside and at the bottom of the reaction tank for cathodic protection of the laptop casing, a circulation part installed at the bottom of the reaction tank for circulating the solution to separate hydrogen bubbles from the flow, a convection part installed on the reaction tank for detaching hydrogen bubbles from the electrode surface through convection between the solution and the circulation part, and a clamping part installed at the edge of the reaction tank for clamping the laptop casing and increasing the cathodic protection area and reducing the disturbance of the water surface by hydrogen bubbles. The conductive part includes an insulating housing installed at the bottom of the outer wall of the reaction tank. A copper busbar is embedded in the top of the insulating housing, and a guide post is provided on the copper busbar. A spiral electrode is fixedly connected to the guide post, and a gasket is fixedly connected to the spiral electrode. A power interface is provided on the front of the outer wall of the insulating housing, and the power interface is electrically connected to the copper busbar.

[0009] Preferably, the insulating enclosure has an U-shaped structure, and there are two copper busbars symmetrically distributed on the top of the insulating enclosure. There are four guide posts, four spiral electrodes, and four gaskets, and each pair of guide posts is fixedly connected to the end of the copper busbar on the same side.

[0010] Preferably, the bottom of the inner wall of the reaction tank is provided with four symmetrical mounting holes, and the four guide posts are respectively fixedly connected to the inner wall of the four mounting holes and seal the mounting holes.

[0011] Preferably, the circulation unit includes a frame, which is fixedly connected to the bottom of the outer wall of the reaction tank. The frame is located between the inner walls of the insulating housing. A water pump is installed on the inner wall of the frame. A water pump inlet is connected to a water suction pipe, and a water pump outlet is connected to a water outlet pipe. The ends of the water suction pipe and the water outlet pipe are respectively fixedly connected to both sides of the insulating housing and connected to each other.

[0012] Preferably, the convection section includes a support frame, which is fixedly connected to one side of the outer wall of the reaction tank. A rotary motor is mounted on the support frame, and the output shaft of the rotary motor is fixedly connected to a first rotating shaft. A second rotating shaft is rotatably connected to one side of the inner wall of the reaction tank. A stirring paddle is fixedly connected to the end of the second rotating shaft. Both the first and second rotating shafts are fixedly fitted with pulleys, and a transmission belt is connected between the two pulleys.

[0013] Preferably, the clamping part includes a rod sleeve, which is fixedly connected to one side edge of the reaction tank opening. An electric actuator is installed on the inner wall of the rod sleeve, and an insulating plate is fixedly connected to the inner end of the electric actuator. A grid is fixedly connected to the bottom of the insulating plate. There are two clamping parts, and the other clamping part is symmetrically installed on the other side edge of the reaction tank opening.

[0014] Preferably, the four corners of the bottom of the outer wall of the reaction tank are fixedly connected to support legs, the bottom of the four support legs are fixedly connected to a base plate, and a displacement mechanism is provided on the top rear side of the base plate.

[0015] Preferably, the displacement mechanism includes two parallel linear motors and one transverse linear motor. The two parallel linear motors are symmetrically mounted on the top rear side of the base plate, and the transverse linear motor is mounted on the moving end of the two parallel linear motors.

[0016] Preferably, a laser welding gun is installed on the moving end of the transverse linear motor, and a laser displacement sensor is installed aligned with one side of the emitting end of the laser welding gun. The laser displacement sensor is electrically connected to the rotary motor.

[0017] Preferably, a laptop casing is provided inside the reaction tank, the laptop casing is placed on four pads, and the laptop casing is clamped between two grids.

[0018] (III) Beneficial Effects

[0019] Compared with the prior art, the present invention provides a notebook computer casing processing and welding device, which has the following beneficial effects:

[0020] 1. This laptop casing processing and welding equipment uses cathodic protection to inhibit metal corrosion. Cathodic protection current is applied to the laptop casing through the conductive part, making it a cathode, which inhibits and slows down the corrosion of metal at the high temperature of welding, reduces the oxidation area of ​​the solder joint, prevents further diffusion of oxidation, and improves welding safety, solder joint precision and welding quality.

[0021] 2. This laptop casing processing and welding equipment improves welding precision by addressing bubble issues, reducing bubble concentration and water surface disturbance. The spiral structure of the spiral electrode and the grid design of the clamping part provide more escape channels for bubbles, increase the contact area between bubbles and the electrode surface, reduce adhesion strength, promote bubble detachment, and avoid a large number of bubbles accumulating and overflowing, causing strong water surface disturbance, thus ensuring water surface stability. This is beneficial for the stability of refractive accuracy during laser welding and reduces welding errors.

[0022] 3. This laptop casing welding equipment uses accelerated bubble dispersion and removal. The circulation section uses a water pump to circulate the electrolyte solution, causing hydrogen bubbles to detach from the electrode surface and disperse in the solution. The convection section uses a rotating motor to drive a stirring paddle to agitate the solution, forming convection with the circulating solution, which promptly removes bubbles from the electrode area, preventing them from accumulating. This further improves electrode reaction efficiency, addresses issues such as uneven electrode surface and interference current distribution, and enhances welding precision.

[0023] 4. This laptop casing processing and welding equipment is adapted to process casings of different sizes. The electric push rod of the clamping part can adjust the grid spacing, which can adapt to the stable feeding and clamping of laptop casings of different sizes, thus enhancing the versatility of the equipment.

[0024] 5. This laptop casing welding equipment employs precise control of the welding process. A laser displacement sensor is linked with a rotary motor. Based on the change in the refraction angle of the laser in the electrolyte solution, the offset is accurately calculated and a feedback signal is sent to drive the rotary motor. This causes the stirring paddle speed to change with the size of the refraction angle, achieving dynamic adjustment of the solution state and bubble distribution. This further optimizes the welding environment and improves the stability and precision of the welding process.

[0025] 6. This laptop casing processing and welding equipment improves overall processing efficiency and quality. While ensuring welding precision, the equipment also improves the stability and safety of the processing, reduces welding defects caused by oxidation, bubbles, and other problems, thereby improving the overall processing efficiency and quality of the laptop casing. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of a laptop casing processing and welding equipment proposed in this invention;

[0027] Figure 2 This is an overall bottom axial view of a laptop casing processing and welding device proposed in this invention;

[0028] Figure 3 This is a schematic diagram of the structure of a laser welding gun for a laptop casing processing and welding device proposed in this invention;

[0029] Figure 4 This is a connection diagram of the laptop shell, conductive part, and clamping part of a laptop shell processing and welding device proposed in this invention;

[0030] Figure 5 This is a schematic diagram of the reaction tank structure of a laptop casing welding equipment proposed in this invention;

[0031] Figure 6 This is a schematic diagram of the conductive part of a laptop casing welding device proposed in this invention;

[0032] Figure 7 This is a schematic diagram of the circulation section of a laptop casing processing and welding device proposed in this invention;

[0033] Figure 8 This is a schematic diagram of the convection section of a laptop casing processing and welding device proposed in this invention;

[0034] Figure 9This is a schematic diagram of the clamping part of a laptop shell processing and welding equipment proposed in this invention.

[0035] In the diagram: 1. Reaction tank; 2. Mounting hole; 3. Conducting part; 31. Insulating casing; 32. Copper busbar; 33. Guide post; 34. Spiral electrode; 35. Gasket; 36. Power interface; 4. Circulation part; 41. Frame; 42. Water pump; 43. Pump pipe; 44. Discharge pipe; 5. Convection part; 51. Support; 52. Rotary motor; 53. Shaft 1; 54. Shaft 2; 55. Stirring paddle; 56. Pulley; 57. Drive belt; 6. Clamping part; 61. Rod sleeve; 62. Electric actuator; 63. Insulating plate; 64. Grille; 7. Support leg; 8. Base plate; 9. Displacement mechanism; 10. Laser welding gun; 11. Laser displacement sensor; 12. Notebook casing. Detailed Implementation

[0036] The technical solutions of the embodiments 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, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0037] Please see Figure 1-9 This invention provides a technical solution: a laptop casing welding device, comprising a reaction tank 1 containing an electrolyte solution, a conductive part 3 installed inside and at the bottom of the reaction tank 1 for cathodic protection of the laptop casing, a circulation part 4 installed at the bottom of the reaction tank 1 for circulating the solution to separate hydrogen bubbles from the flow, a convection part 5 installed on the reaction tank 1 for convection between the solution and the circulation part 4 to detach hydrogen bubbles from the electrode surface, and a clamping part 6 installed at the edge of the reaction tank 1 for clamping the laptop casing, increasing the cathodic protection area, and reducing the disturbance of the water surface by hydrogen bubbles.

[0038] In this invention, cathodic protection of the notebook metal casing is achieved based on the principle of electrochemical corrosion. The conductive part 3 includes an insulating housing 31, which is installed at the bottom of the outer wall of the reaction tank 1. A copper busbar 32 is embedded in the top of the insulating housing 31, and a guide post 33 is provided on the copper busbar 32. A spiral electrode 34 is fixedly connected to the guide post 33. The spiral shape can increase the contact area of ​​hydrogen bubbles, slow down the rising speed of hydrogen bubbles, and thus reduce water surface disturbance. A gasket 35 is fixedly connected to the spiral electrode 34. The gasket 35 is made of insulating material to prevent direct current from affecting the surface where the notebook metal casing is placed. To prevent pollution and ensure the safety of personnel during material loading, a power interface 36 is provided on the front of the outer wall of the insulating housing 31. The power interface 36 is electrically connected to the copper busbar 32. The insulating housing 31 has an U-shaped structure. There are two copper busbars 32 symmetrically distributed on the top of the insulating housing 31. There are four guide posts 33, four spiral electrodes 34 and four gaskets 35. Each pair of guide posts 33 is fixedly connected to the end of the copper busbar 32 on the same side. Four mounting holes 2 are symmetrically opened at the bottom of the inner wall of the reaction tank 1. The four guide posts 33 are fixedly connected to the inner wall of the four mounting holes 2 and the mounting holes 2 are sealed.

[0039] In this embodiment, in order to further reduce the concentration of hydrogen bubbles and the disturbance of the water surface, the circulation unit 4 includes a frame 41, which is fixedly connected to the bottom of the outer wall of the reaction tank 1. The frame 41 is located between the inner walls of the insulating housing 31. A water pump 42 is installed on the inner wall of the frame 41. The pump is an IRG type vertical circulation pump. A water pump 43 is connected to the inlet of the water pump 42, and a water pump 44 is connected to the outlet of the water pump 42. The ends of the water pump 43 and the water pump 44 are fixedly connected to both sides of the insulating housing 31 and connected to each other.

[0040] To increase the turbulence of the solution and accelerate the dispersion and removal of hydrogen bubbles from the electrodes, the convection unit 5 of this invention includes a support 51, which is fixedly connected to one side of the outer wall of the reaction tank 1. A rotary motor 52 is mounted on the support 51, and the output shaft of the rotary motor 52 is fixedly connected to a rotating shaft 53. A rotating shaft 54 ​​is rotatably connected to one side of the inner wall of the reaction tank 1, and a stirring paddle 55 is fixedly connected to the end of the rotating shaft 54. Both the rotating shaft 53 and the rotating shaft 54 ​​are fixedly fitted with pulleys 56, and a transmission belt 57 is drivingly connected between the two pulleys 56.

[0041] It is worth noting that, in order to stably feed laptop casings of different sizes, the clamping part 6 in this case includes a rod sleeve 61, which is fixedly connected to one side edge of the mouth of the reaction tank 1. An electric push rod 62 is installed on the inner wall of the rod sleeve 61, and an insulating plate 63 is fixedly connected to the inner end of the electric push rod 62. A grid 64 is fixedly connected to the bottom of the insulating plate 63. The grid 64 can increase the bubble climbing area and reduce the effect of concentrated bubble rising. There are two clamping parts 6, and the other clamping part 6 is symmetrically installed on the other side edge of the mouth of the reaction tank 1.

[0042] It is worth noting that support legs 7 are fixedly connected to the four corners of the bottom of the outer wall of the reaction tank 1. The bottom of the four support legs 7 is fixedly connected to the base plate 8. A displacement mechanism 9 is provided on the top rear side of the base plate 8. The displacement mechanism 9 includes two parallel linear motors and one horizontal linear motor. The two parallel linear motors are symmetrically installed on the top rear side of the base plate 8. The horizontal linear motor is installed on the moving end of the two parallel linear motors. A laser welding gun 10 is installed on the moving end of the horizontal linear motor. A laser displacement sensor 11 is installed on one side of the emitting end of the laser welding gun 10. Its model is optoNCDT14xx / 2300. The laser displacement sensor 11 is electrically connected to the rotary motor 52. The feedback signal is generated by calculating the refraction angle of the laser displacement sensor 11 to drive the rotary motor 52 to work. The rotation speed of the rotary motor 52 is proportional to the size of the refraction angle. A laptop shell 12 is provided in the reaction tank 1. The laptop shell 12 is placed on four pads 35 and clamped between two grids 64.

[0043] The working principle is that the inner rod of the electric push rod 62 extends and retracts, driving the insulating plate 63 to move, thereby adjusting the distance between the two side grilles 64, so as to adapt to the notebook shell 12 of different sizes. The notebook shell 12 is immersed in the electrolyte solution and is clamped and fixed by the two side grilles 64. After being powered on through the power interface 36, the direct current is conducted through the copper busbar 32 to the guide post 33, and then the current is passed through the spiral electrode 34 through the guide post 33, so that the electrolyte solution is energized to apply current to the metal notebook shell 12, making it a cathode, thereby inhibiting and slowing down the corrosion of the metal.

[0044] Based on the principle of electrochemical corrosion, hydrogen bubbles are generated in the electrolyte solution. The spiral structure of the spiral electrode 34 and the pores between the grids 64 can provide more escape channels for the bubbles, which can increase the contact area between the bubbles and the electrode surface, reduce the adhesion strength of the bubbles on the electrode surface, and thus promote the detachment of the bubbles. This avoids the problem of a large number of bubbles escaping and causing strong water surface agitation, thus ensuring the stability of the water surface.

[0045] On the other hand, the operation of water pump 42 causes the electrolyte solution to circulate along the pump pipe 43 and the outlet pipe 44, ensuring that the electrolyte solution always flows in the right direction within the reaction tank 1. This causes hydrogen bubbles to detach from the electrode surface and disperse in the solution. A beam of light is vertically projected into the electrolyte solution by laser displacement sensor 11. Based on the principle that when a laser beam with a vertically projected incident angle of 0 degrees enters water from air, according to the law of refraction, the angle of refraction is 0 when the incident angle is 0. This means that when a vertically projected laser beam enters water, its propagation direction does not change and it still propagates in the vertical direction. However, in this case, considering the water surface circulation and the continuous generation of bubbles, the laser beam may be affected to some extent. The refraction angle causes the laser to deflect to the right. The laser displacement sensor 11 can accurately calculate the deflection and synchronously drive the rotary motor 52 based on the feedback signal. This causes the first shaft 53 and the second shaft 54 ​​to rotate synchronously based on the pulley 56 and the transmission belt 57. This causes the stirring paddle 55 to agitate the electrolyte solution, thereby creating a convection effect between the agitated electrolyte solution and the electrolyte solution circulating to the right. This promptly removes hydrogen bubbles from the electrode area, preventing them from accumulating on the electrode surface. The refraction angle of the laser displacement sensor 11 is proportional to the rotation speed of the stirring paddle 55, thereby further improving the electrode reaction efficiency, reducing electrode surface unevenness, and minimizing interference current distribution.

[0046] In the improved electrolyte solution, the water surface is stable and hydrogen bubbles are dispersed and flow in an orderly manner, which can further compensate for the refractive accuracy in laser welding and reduce welding errors. The displacement mechanism 9 drives the laser welding gun 10 to adjust the processing position based on the X and Y axes. The welding position is adjusted by the Z-axis movement of the laser welding gun 10 itself, so that the tip of the laser welding gun 10 is immersed in the electrolyte solution to weld the notebook shell 12. The accelerated metal oxidation reaction caused by the high temperature of welding is protected by the cathode to form an anti-oxidation layer, which greatly reduces the oxidation area of ​​the welding point and prevents further diffusion of oxidation, thereby improving the safety of welding, the accuracy of the welding point, and the welding quality.

[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A laptop computer casing processing and welding equipment, characterized in that, include: The reaction tank (1) contains an electrolyte solution. Conducting part (3), installed inside and at the bottom of the reaction tank (1), is used for cathodic protection of the laptop casing; A circulation unit (4) is installed at the bottom of the reaction tank (1) to circulate the solution so that hydrogen bubbles are separated from the flow; The convection section (5) is installed on the reaction tank (1) and the hydrogen gas bubbles are removed from the electrode surface by the convection between the solution and the circulation section (4). The clamping part (6) is installed on the edge of the reaction tank (1) to clamp the laptop shell and increase the area of ​​cathodic protection and reduce the disturbance of hydrogen bubbles on the water surface. The conductive part (3) includes an insulating housing (31), which is installed on the bottom of the outer wall of the reaction tank (1). A copper busbar (32) is embedded on the top of the insulating housing (31). A guide post (33) is provided on the copper busbar (32). A spiral electrode (34) is fixedly connected to the guide post (33). A gasket (35) is fixedly connected to the spiral electrode (34). A power interface (36) is provided on the front of the outer wall of the insulating housing (31). The power interface (36) is electrically connected to the copper busbar (32).

2. The notebook computer casing processing and welding equipment according to claim 1, characterized in that: The insulating housing (31) has an apex structure. There are two copper busbars (32) symmetrically distributed on the top of the insulating housing (31). There are four guide posts (33), four spiral electrodes (34), and four gaskets (35). Each pair of guide posts (33) is fixedly connected to the end of the copper busbar (32) on the same side.

3. The notebook computer casing processing and welding equipment according to claim 2, characterized in that: The bottom of the inner wall of the reaction tank (1) is symmetrically provided with four mounting holes (2), and the four guide pillars (33) are respectively fixedly connected to the inner wall of the four mounting holes (2) and seal the mounting holes (2).

4. The notebook computer casing processing and welding equipment according to claim 3, characterized in that: The circulation unit (4) includes a frame (41), which is fixedly connected to the bottom of the outer wall of the reaction tank (1). The frame (41) is located between the inner walls of the insulating housing (31). A water pump (42) is installed on the inner wall of the frame (41). A water pump (43) is connected to the inlet of the water pump (42), and a water outlet pipe (44) is connected to the outlet of the water pump (42). The ends of the water pump (43) and the water outlet pipe (44) are fixedly connected to both sides of the insulating housing (31) and connected.

5. The notebook computer casing processing and welding equipment according to claim 4, characterized in that: The convection section (5) includes a support (51), which is fixedly connected to one side of the outer wall of the reaction tank (1). A rotary motor (52) is installed on the support (51). The output shaft of the rotary motor (52) is fixedly connected to a rotating shaft (53). A rotating shaft (54) is rotatably connected to one side of the inner wall of the reaction tank (1). A stirring paddle (55) is fixedly connected to the end of the rotating shaft (54). Pulleys (56) are fixedly sleeved on both the rotating shaft (53) and the rotating shaft (54). A transmission belt (57) is connected between the two pulleys (56).

6. The notebook computer casing processing and welding equipment according to claim 5, characterized in that: The clamping part (6) includes a rod sleeve (61), which is fixedly connected to one side edge of the pool opening of the reaction tank (1). An electric push rod (62) is installed on the inner wall of the rod sleeve (61). An insulating plate (63) is fixedly connected to the inner rod end of the electric push rod (62). A grid (64) is fixedly connected to the bottom of the insulating plate (63). There are two clamping parts (6), and the other clamping part (6) is symmetrically installed on the other side edge of the pool opening of the reaction tank (1).

7. The notebook computer casing processing and welding equipment according to claim 6, characterized in that: The reaction tank (1) has four fixed legs (7) at the bottom corners of its outer wall. The bottom of the four legs (7) is fixedly connected to a base plate (8). A displacement mechanism (9) is provided on the top rear side of the base plate (8).

8. The notebook computer casing processing and welding equipment according to claim 7, characterized in that: The displacement mechanism (9) includes two parallel linear motors and one transverse linear motor. The two parallel linear motors are symmetrically mounted on the top rear side of the base plate (8), and the transverse linear motor is mounted on the moving end of the two parallel linear motors.

9. A notebook computer casing processing and welding equipment according to claim 8, characterized in that: A laser welding gun (10) is installed on the moving end of the horizontal linear motor. A laser displacement sensor (11) is installed on one side of the emitting end of the laser welding gun (10). The laser displacement sensor (11) is electrically connected to the rotary motor (52).

10. A notebook computer casing processing and welding equipment according to claim 9, characterized in that: The reaction tank (1) is provided with a notebook casing (12), which is placed on four pads (35) and sandwiched between two grids (64).

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