Mobile phone middle plate welding positioning mechanism

Abstract

The utility model relates to the technical field of mobile phone middle plate welding, in particular to a mobile phone middle plate welding positioning mechanism. The mobile phone middle plate welding positioning mechanism comprises a rotating disc, a lower die arranged on the rotating disc and an upper die capable of being closed with the lower die. The lower die comprises a lower die base and a lower die core arranged on the lower die base. The upper die comprises an upper die frame, an upper die plate arranged on the upper die frame, an elastic device arranged on the upper die plate and an upper die core arranged on the elastic device. And a welding hole for welding is formed in the upper template. During welding, the plate body and the frame are placed in the lower die core, and then the upper die and the lower die are closed. The elastic device enables the upper die core to be gently pressed on the mobile phone middle plate, displacement cannot be generated between the plate body and the frame, and the welding quality can be guaranteed. And after the upper die and the lower die are closed in place, laser is used for welding the welding position between the plate body and the middle frame at the welding hole, so that the welding quality is better guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of mobile phone mid-plate welding technology, and in particular to a mobile phone mid-plate welding positioning mechanism. Background Technology

[0002] The mid-plate is one of the components of a mobile phone, and the screen, circuit board, etc. are all mounted on the mid-plate. Some mid-plates on the market have a relatively complex structure, so they are welded together with the frame to form the mid-plate.

[0003] When welding the mid-plate of a mobile phone, pressure plates and clamps are generally used to fix the mid-plate before welding. Before welding, the plate and frame are only initially positioned. During the process of clamping with clamps or pressure plates, the mid-plate will be subjected to a certain amount of vibration, which can easily cause displacement and thus affect the welding quality.

[0004] For example, Chinese patent application number CN202020430275.X discloses a rotary copper sheet welding device for mobile phone mid-plates. Specifically, it discloses that "after the mobile phone mid-plate holder is placed into the mobile phone mid-plate, the lifting cylinder moves downwards to reset, causing each pressure claw, through its connected push rod, to press the mobile phone mid-plate firmly onto the mobile phone mid-plate holder, thus achieving the goal of fixing the mobile phone mid-plate in place." This design, used for welding mobile phone mid-plates, causes the mid-plate to vibrate and potentially shift when the pressure claws press down, thus affecting the welding quality.

[0005] For example, Chinese patent application CN201520859900.1 discloses a pressing mechanism and a pressing machine using the pressing mechanism. Specifically, it discloses that "the piston rod of the lifting cylinder extends, drives the force application rod upward through the lever arm, and then uses the connecting rod rotatably connected to the bracket to drive the pressing plate to slide on the bracket, so as to quickly and stably press the middle frame and middle plate below the pressing plate." This design is used to weld the middle plate of a mobile phone. When the pressing gripper presses down on the middle plate of the mobile phone, the middle plate of the mobile phone will also be subjected to a certain amount of vibration, which is prone to displacement, thus affecting the welding quality. Utility Model Content

[0006] In view of this, the present invention addresses the deficiencies of the existing technology and its main purpose is to provide a mobile phone mid-plate welding positioning mechanism that can prevent displacement between the frame and the plate, help ensure welding quality, and thus overcome the shortcomings of the existing technology.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] This application provides a welding positioning mechanism for a mobile phone midplate, including a turntable, a lower mold disposed on the turntable, and an upper mold that can close with the lower mold; the lower mold includes a lower mold base and a lower mold core disposed on the lower mold base; the upper mold includes an upper mold frame, an upper template disposed on the upper mold frame, an elastic device disposed on the upper template, and an upper mold core disposed on the elastic device; the upper template is provided with welding holes for welding.

[0009] Preferably, the lower mold is provided with an ejector pin, and a first spring passes through the ejector pin; a first cylinder is provided on the lower side of the turntable; the output end of the first cylinder can press against the ejector pin.

[0010] Preferably, the output end of the first cylinder is provided with a top plate, and the top plate is provided with a number of protrusions that can abut against some of the ejector pins.

[0011] Preferably, the lower mold core is provided with a positioning block and a positioning post, the positioning block clamps the middle plate of the mobile phone, and the positioning post passes through the middle plate of the mobile phone.

[0012] Preferably, the elastic device is one of a spring column, a silicone column, or an elastic plastic column.

[0013] Preferably, the upper mold frame is mounted on a driving device, which includes a mounting frame, a second cylinder mounted on the mounting frame, a slide rail, and a slider mounted on the slide rail; the upper mold frame is connected to the slider; the second cylinder is connected to the upper mold frame and can drive the upper mold frame to slide up and down.

[0014] Preferably, the welding hole has an elongated shape; the upper mold frame is provided with a rectangular clearance opening, and the welding hole is located on the lower side of the clearance opening.

[0015] Preferably, there are three lower molds, which are distributed at equal angles on the turntable; and there are two upper molds.

[0016] Compared with existing technologies, this invention has significant advantages and beneficial effects. Specifically, as shown in the above technical solution, during welding, the plate and frame are placed into the lower mold core, and then the upper and lower molds are closed. The elastic device allows the upper mold core to gently press against the middle plate of the phone, preventing displacement between the plate and the frame, ensuring a tight fit at the weld joint between the middle plate and the frame, and helping to guarantee welding quality. After the upper and lower molds are closed in place, the laser welds the plate and the middle frame at the welding holes, further ensuring welding quality. Attached Figure Description

[0017] Figure 1 This is an overall schematic diagram of an embodiment of the present utility model.

[0018] Figure 2 This is a schematic diagram of the upper and lower molds according to an embodiment of this utility model.

[0019] Figure 3 This is a schematic diagram of the lower mold according to an embodiment of the present invention.

[0020] Figure 4 This is a schematic diagram of the upper mold according to an embodiment of the present invention.

[0021] Figure 5 This is a bottom view of the upper mold according to an embodiment of the present invention.

[0022] Explanation of reference numerals in the attached diagram:

[0023] 10. Turntable; 11. Lower mold; 12. Lower mold base; 13. Lower mold core; 14. Ejector pin; 15. First spring; 16. First cylinder; 17. Top plate; 18. Protrusion; 19. Positioning block; 110. Positioning post; 20. Upper mold; 21. Upper mold frame; 22. Upper template; 23. Elastic device; 24. Welding hole; 25. Drive device; 26. Mounting bracket; 27. Second cylinder; 28. Slide rail; 29. ​​Slider; 210. Upper mold core; 30. Mobile phone middle plate. Detailed Implementation

[0024] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0025] Please refer to Figures 1 to 5 As shown, it illustrates the specific structure of a preferred embodiment of the present invention, which is a welding positioning mechanism for a mobile phone mid-plate.

[0026] When the upper mold 20 and the lower mold 11 are closed, they can smoothly press the frame and the plate together. Then, the laser performs welding at the welding hole 24. There will be no displacement between the plate and the frame, and the welding quality is guaranteed.

[0027] This application provides a welding positioning mechanism for a mobile phone mid-plate 30, including a turntable 10, a lower mold 11 disposed on the turntable 10, and an upper mold 20 that can close with the lower mold 11. The lower mold 11 includes a lower mold base 12 and a lower mold core 13 disposed on the lower mold base 12. The upper mold 20 includes an upper mold frame 21, an upper template 22 disposed on the upper mold frame 21, an elastic device 23 disposed on the upper template 22, and an upper mold core 210 disposed on the elastic device 23. The upper template 22 is provided with welding holes 24 for welding. The turntable 10 is driven to rotate by a cam divider and a speed-regulating motor. The upper mold 20 and the lower mold 11 can be closed together. There are three lower molds 11, which are distributed at equal angles on the turntable 10; there are two upper molds 20. This design allows for welding of the mobile phone mid-plate 30 in stages, which helps to ensure product quality and increase production capacity. The spring column can be compressed, providing a good buffering effect. During welding, the pre-positioned middle frame and plate are placed into the lower mold core 13; then the elastic device 23 allows the upper mold 20 and lower mold 11 to close gently together, avoiding displacement. The upper mold 20 and lower mold 11 press the mobile phone middle plate 30 together, and then the laser welds the welding position at the welding hole 24; after welding is completed, the upper mold 20 and lower mold 11 separate, and the ejector pin 14 lifts the mobile phone middle plate 30, making it convenient for the robot to transfer the mobile phone middle plate 30.

[0028] Preferably, the lower mold 11 is provided with ejector pins 14, and a first spring 15 passes through the ejector pins 14; a first cylinder 16 is provided on the lower side of the turntable 10; the output end of the first cylinder 16 can abut against the ejector pins 14. A top plate 17 is provided on the output end of the first cylinder 16, and a plurality of protrusions 18 are provided on the top plate 17, which can abut against some of the ejector pins 14. The top plate 17 on the output end of the first cylinder 16 can drive the ejector pins 14 to eject the mobile phone middle plate 30 on the lower mold core 13. The first spring 15 enables the ejector pins 14 to return to their original position. The position of the protrusions 18 can be set as needed. The protrusions 18 allow the mobile phone middle plate 30 to be ejected as a whole at the same time, for example, the frame and the plate body can be ejected at the same time. This design can prevent deformation. At the same time, the protrusions 18 can also make the rubber head of each ejector pin fit the contour height of the mobile phone middle plate when the ejector pins are lifted.

[0029] Preferably, the lower mold core 13 is provided with a positioning block 19 and a positioning post 110. The positioning block 19 clamps the mobile phone middle plate 30, and the positioning post 110 passes through the mobile phone middle plate 30. The positioning block 19 can position the upper and lower ends of the mobile phone middle plate 30, and the positioning post 110 passes through the frame and the plate body to ensure that no displacement occurs, which helps to ensure the quality of welding.

[0030] Preferably, the elastic device 23 is one of a spring pillar, a silicone pillar, or an elastic plastic pillar. In this embodiment, the elastic device 23 is a spring pillar. The spring pillar allows the upper mold core 210 to gently press against the mobile phone middle plate 30, preventing the mobile phone middle plate 30 from being deformed by impact, and also preventing displacement during mold closing, which helps to ensure quality.

[0031] Preferably, the upper mold frame 21 is mounted on the driving device 25, which includes a mounting bracket 26, a second cylinder 27 mounted on the mounting bracket 26, a slide rail 28, and a slider 29 mounted on the slide rail 28. The upper mold frame 21 is connected to the slider 29. The second cylinder 27 is connected to the upper mold frame 21 and can drive the upper mold frame 21 to slide up and down. The upper mold frame 21 is provided with the slider 29. The second cylinder 27 can drive the upper mold frame 21 to slide up and down on the slide rail 28, thereby allowing the upper mold 20 and the lower mold 11 to close together.

[0032] Preferably, the welding hole 24 is elongated; both the upper mold frame 21 and the upper template 22 are provided with rectangular clearance openings, and the welding hole 24 is located below the clearance opening. The shape of the welding hole 24 can be determined according to the specific welding process and is not specifically limited. After the laser passes through the clearance opening and the welding hole 24, it welds the mobile phone middle plate 30. This design ensures that the welding position is firmly pressed down, resulting in precise welding and better strength.

[0033] In summary, the key design feature of this invention is that when the upper mold 20 and lower mold 11 are closed, the elastic device 23 allows the upper mold core 210 to gently press against the mobile phone mid-plate 30, preventing displacement between the plate and the frame, thus helping to ensure welding quality. After the upper mold 20 and lower mold 11 are fully closed, the laser then precisely welds the plate and the mid-frame at the welding holes 24, further guaranteeing welding quality.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A mobile phone mid-plate welding positioning mechanism, comprising a turntable (10), a lower mold (11) disposed on the turntable (10), and an upper mold (20) capable of closing with the lower mold (11); characterized in that: The lower mold (11) includes a lower mold base (12) and a lower mold core (13) disposed on the lower mold base (12); the upper mold (20) includes an upper mold frame (21), an upper template (22) disposed on the upper mold frame (21), an elastic device (23) disposed on the upper template (22), and an upper mold core (210) disposed on the elastic device (23); the upper template (22) is provided with welding holes (24) for welding.

2. The mobile phone mid-plate welding positioning mechanism according to claim 1, characterized in that: The lower mold (11) is provided with an ejector pin (14), and a first spring (15) passes through the ejector pin (14); a first cylinder (16) is provided on the lower side of the turntable (10); the output end of the first cylinder (16) can press against the ejector pin (14).

3. The mobile phone mid-plate welding positioning mechanism according to claim 2, characterized in that: The first cylinder (16) has a top plate (17) on its output end, and a number of protrusions (18) are provided on the top plate (17). The protrusions (18) can press against some of the ejector pins (14).

4. The mobile phone mid-plate welding positioning mechanism according to claim 1, characterized in that: The lower mold core (13) is provided with a positioning block (19) and a positioning post (110). The positioning block (19) clamps the middle plate of the mobile phone, and the positioning post (110) passes through the middle plate of the mobile phone.

5. The mobile phone mid-plate welding positioning mechanism according to claim 1, characterized in that: The elastic device (23) is one of the following: spring column, silicone column, or elastic plastic column.

6. The mobile phone mid-plate welding positioning mechanism according to claim 1, characterized in that: The upper mold frame (21) is mounted on the drive device (25), which includes a mounting bracket (26), a second cylinder (27) mounted on the mounting bracket (26), a slide rail (28), and a slider (29) mounted on the slide rail (28). The upper mold frame (21) is connected to the slider (29). The second cylinder (27) is connected to the upper mold frame (21) and can drive the upper mold frame (21) to slide up and down.

7. The mobile phone mid-plate welding positioning mechanism according to claim 1, characterized in that: The structure of the welding hole (24) is elongated; the upper mold frame (21) is provided with a rectangular clearance opening, and the welding hole (24) is located on the lower side of the clearance opening.

8. The mobile phone mid-plate welding positioning mechanism according to claim 1, characterized in that: There are three lower molds (11), which are distributed at equal angles on the turntable (10); there are two upper molds (20).

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