Universal mobile phone middle frame sealing plug assembling jig
By designing a fixture for assembling the sealing plug of a mobile phone frame, and using a drive cylinder and a return spring to achieve automated assembly, the problems of low assembly efficiency and poor accuracy of the sealing plug were solved, thus improving assembly efficiency and accuracy.
Patent Information
- Application Number
- CN202520349179.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-03
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-03-03
AI Technical Summary
In the existing technology, the assembly efficiency and accuracy of the sealing plug for the middle frame of mobile phones are low, and the manual assembly is labor-intensive, which cannot meet the requirements of high-efficiency and high-precision assembly.
A universal assembly fixture for mobile phone mid-frame sealing plugs was designed. A drive cylinder drives the ejector pin fixing plate to insert the ejector pin into the sealing plug groove. Combined with a reset spring and a sealing plug positioning block, automated and precise assembly is achieved.
It improves the assembly efficiency of sealing plugs, reduces the intensity of manual labor, and improves the accuracy of assembly, thus meeting the requirements of high-efficiency and high-precision assembly.
Smart Images

Figure CN223790304U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automation technology, specifically a general-purpose assembly fixture for mobile phone mid-frame sealing plugs. Background Technology
[0002] In mobile phone manufacturing, parts such as the headphone jack, USB port, and SIM card slot on the phone's frame need to be sealed with rubber rings or silicone plugs to achieve waterproofing and dustproofing. These seals prevent dust and moisture from entering the phone, protecting critical components like the battery and motherboard from damage and extending the phone's lifespan. The seals also provide shock absorption, cushioning the phone when dropped or bumped, reducing direct impact on the screen or glass panel and lowering the risk of breakage. With technological advancements, modern mobile phone designs tend towards exposed waterproof designs, and the use of seals has become more refined to adapt to different design and functional requirements.
[0003] Currently, the conventional method for assembling the sealing plugs in the middle frame of mobile phones is by manual assembly. However, due to the small size of the sealing plugs, assembly is difficult, resulting in low assembly efficiency. Furthermore, the small sealing holes make it difficult to guarantee the accuracy of manual assembly, leading to high labor intensity and failing to meet the current demand for efficient and precise assembly. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a universal assembly fixture for mobile phone mid-frame sealing plugs, solving the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a universal mobile phone mid-frame sealing plug assembly fixture, comprising an mounting plate, a driving cylinder disposed on the surface of the mounting plate, a connecting block disposed on the driving end of the driving cylinder, a pin fixing plate disposed on one side of the connecting block, a pin and a return spring disposed on one side of the pin fixing plate, a fixing block disposed on one end of the return spring, a sealing plug positioning block disposed on the surface of the fixing block, and a sealing plug groove formed on the upper surface of the sealing plug positioning block.
[0006] Optionally, the bottom of the ejector pin fixing plate is provided with a slider, and a slide rail is provided on the mounting plate, with the slider slidably connected to the slide rail.
[0007] Optionally, the ejector pin passes through the fixing block and is inserted into the sealing plug groove.
[0008] Optionally, the upper surface of the mounting plate is further provided with a frame fixing block for fixing the mobile phone frame.
[0009] Optionally, a positioning protrusion for positioning the sealing hole on the middle frame is provided on one side of the fixing block, and a sealing plug outlet is provided on the surface of the positioning protrusion.
[0010] Optionally, the number and position of the positioning protrusions and the ejector pins are adapted to the number and position of the sealing holes on the middle frame.
[0011] This utility model provides a universal assembly fixture for mobile phone mid-frame sealing plugs, which has the following beneficial effects:
[0012] This universal mobile phone mid-frame sealing plug assembly fixture uses a drive cylinder to drive a pin fixing plate, which in turn pushes the pin precisely into the sealing hole on the mid-frame of the mobile phone, thus achieving automatic assembly of the sealing plug. This greatly improves work efficiency and reduces manual labor intensity. The elastic setting of the return spring resets the pin after the sealing plug is pushed in, reducing the difficulty of control. The sealing plug groove on the sealing plug positioning block, combined with the positioning protrusion, improves the assembly accuracy and ensures that the fixture assembles the sealing plug in place. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model;
[0014] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle;
[0015] Figure 3 This is a schematic diagram of the connection structure of the ejector pin fixing plate of this utility model.
[0016] In the diagram: 1. Mounting plate; 2. Drive cylinder; 3. Connecting block; 4. Ejector pin fixing plate; 5. Ejector pin; 6. Return spring; 7. Fixing block; 8. Sealing plug positioning block; 9. Sealing plug groove; 10. Slider; 11. Slide rail; 12. Middle frame fixing block; 13. Positioning protrusion; 14. Sealing plug outlet. Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0018] Please see Figures 1 to 3This utility model provides a technical solution: a universal mobile phone mid-frame sealing plug assembly fixture, including a mounting plate 1. The upper surface of the mounting plate 1 is also provided with a mid-frame fixing block 12 for fixing the mobile phone mid-frame to prevent the mobile phone mid-frame from moving during assembly. The surface of the mounting plate 1 is provided with a driving cylinder 2. The driving end of the driving cylinder 2 is provided with a connecting block 3. A pin fixing plate 4 is provided on one side of the connecting block 3. A slider 10 is provided at the bottom of the pin fixing plate 4. A slide rail 11 is provided on the mounting plate 1. The slider 10 is slidably connected to the slide rail 11. The pin fixing plate 4 is moved along the slide rail 11 by the slider 10 to ensure its stability during movement. A pin 5 and a return spring 6 are provided on one side of the pin fixing plate 4. The pin 5 passes through the fixing block 7 and is inserted into the sealing plug groove 9. In use, the driving cylinder 2 drives the pin fixing plate 4 to insert the pin 5 into the sealing plug groove 9, and pushes the sealing plug accurately into the sealing hole on the mobile phone mid-frame to realize automatic assembly of the sealing plug, which greatly improves its working efficiency and reduces the intensity of manual labor.
[0019] A fixing block 7 is provided at one end of the return spring 6. The elastic setting of the return spring 6 is used to reset the ejector pin 5 after the sealing plug is pushed in, which effectively reduces the difficulty of cylinder drive control and realizes the ejector pin fixing plate 4 to perform efficient reciprocating action. A positioning protrusion 13 for positioning the sealing hole on the middle frame is provided on one side of the fixing block 7. The surface of the positioning protrusion 13 is provided with a sealing plug outlet 14. The number and position of the positioning protrusion 13 and the ejector pin 5 are matched with the number and position of the sealing hole on the middle frame. A sealing plug positioning block 8 is provided on the surface of the fixing block 7. A sealing plug groove 9 is opened on the upper surface of the sealing plug positioning block 8. By cooperating with the positioning protrusion 13, the positioning protrusion 13 is aligned with the sealing hole on the middle frame of the mobile phone, thereby improving the assembly accuracy and ensuring that the fixture assembles the sealing plug in place.
[0020] In this invention, the working steps of the device are as follows:
[0021] First, align the sealing hole with the positioning protrusion 13 and fit the mobile phone frame onto the frame fixing block 12. Then, place the sealing plug into the sealing plug groove 9 on the sealing plug positioning block 8.
[0022] Then start the drive cylinder 2, drive the ejector pin fixing plate 4 to move along the slide rail 11, and insert the ejector pin 5 into the sealing plug groove 9, and accurately push the sealing plug placed inside into the sealing hole on the middle frame of the mobile phone for assembly.
[0023] Then, the drive cylinder 2 is turned off. Under the elastic action of the return spring 6, the ejector pin fixing plate 4 is reset, the ejector pin 5 exits the sealing plug groove 9, the assembled mobile phone frame is removed, and the next mobile phone frame sealing plug is assembled.
[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A universal mobile phone mid-frame sealing plug assembly fixture, comprising a mounting plate (1), characterized in that: The surface of the mounting plate (1) is provided with a driving cylinder (2), the driving end of the driving cylinder (2) is provided with a connecting block (3), a pin fixing plate (4) is provided on one side of the connecting block (3), a pin (5) and a return spring (6) are provided on one side of the pin fixing plate (4), a fixing block (7) is provided on one end of the return spring (6), a sealing plug positioning block (8) is provided on the surface of the fixing block (7), and a sealing plug groove (9) is opened on the upper surface of the sealing plug positioning block (8).
2. The universal mobile phone mid-frame sealing plug assembly fixture according to claim 1, characterized in that: The bottom of the ejector pin fixing plate (4) is provided with a slider (10), and the slide rail (11) is provided on the mounting plate (1). The slider (10) is slidably connected to the slide rail (11).
3. A universal mobile phone mid-frame sealing plug assembly fixture according to claim 1, characterized in that: The ejector pin (5) passes through the fixing block (7) and is inserted into the sealing plug groove (9).
4. A universal mobile phone mid-frame sealing plug assembly fixture according to claim 1, characterized in that: The upper surface of the mounting plate (1) is also provided with a frame fixing block (12) for fixing the mobile phone frame.
5. A universal mobile phone mid-frame sealing plug assembly fixture according to claim 1, characterized in that: The fixing block (7) is provided with a positioning protrusion (13) on one side for positioning the sealing hole on the middle frame, and the surface of the positioning protrusion (13) is provided with a sealing plug outlet (14).
6. A universal mobile phone mid-frame sealing plug assembly fixture according to claim 5, characterized in that: The number and position of the positioning protrusions (13) and the ejector pins (5) are adapted to the number and position of the sealing holes on the middle frame.