Mobile phone back cover polishing device

The mobile phone back cover polishing device, which uses dual-axis linkage and a three-axis polishing head, solves the problems of uneven polishing and micro-cracks on curved surfaces, improves production efficiency and yield, and adapts to the rapid replacement of back covers of different models.

CN224509302UActive Publication Date: 2026-07-17DONGGUAN HUACAI OPTICAL TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DONGGUAN HUACAI OPTICAL TECH CO LTD
Filing Date
2025-06-30
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing mobile phone back cover polishing technology cannot adapt to the complex three-dimensional contours of curved metal back covers, resulting in uneven polishing of edge areas. Rigid clamping devices are prone to micro-cracks, and fixed polishing heads lack dynamic compensation capabilities, affecting production efficiency and yield.

Method used

The system employs a dual-axis linkage mechanism combined with a three-axis polishing head. Horizontal and vertical displacement are achieved through the first and second slide cylinders. The electric lead screw drives the clamping part to move back and forth, and the multi-point clamping of the rotary cylinder ensures stable workpiece positioning and uniform polishing.

Benefits of technology

It achieves high-precision polishing of complex curved surfaces, improves production efficiency and yield, reduces the risk of workpiece damage, and allows for quick replacement of different models of back covers.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224509302U_ABST
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Abstract

The utility model relates to mobile phone back cover processing equipment, especially a mobile phone back cover polishing device. A mobile phone back cover polishing device, including with the installation platform of polishing machine frame installation, one side of installation platform is equipped with first sliding platform jar through support, first sliding platform jar is parallel with installation platform, and the sliding block of first sliding platform jar is equipped with the second sliding platform jar perpendicular to first sliding platform jar, and the slide of second sliding platform jar is equipped with polishing part. The mobile phone back cover polishing device is through setting up the double axle linkage of first sliding platform jar and second sliding platform jar of support support in installation platform, wherein first sliding platform jar is parallel to installation platform and realizes horizontal displacement, and second sliding platform jar is perpendicular to first sliding platform jar and completes vertical feed, and the polishing part is installed on the slide of second sliding platform jar and realizes accurate positioning.
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Claims

1. A mobile phone back cover polishing device comprising a mounting platform (1) for mounting with a polishing machine frame, characterized in that: A first sliding cylinder (3) is installed on one side of the mounting platform (1) via a bracket (2). The first sliding cylinder (3) is parallel to the mounting platform (1). A second sliding cylinder (4) perpendicular to the first sliding cylinder (3) is installed on the sliding block of the first sliding cylinder (3). A polishing part is installed on the slider of the second sliding cylinder (4). Two sets of electric lead screws (5) are installed on the mounting platform (1). The slider of the electric lead screw (5) is equipped with a clamping part for clamping the back cover of the mobile phone. The clamping part moves back and forth on the electric lead screw (5).

2. The mobile phone back cover polishing device according to claim 1, wherein: A third slide cylinder (6) is mounted on the slider of the second slide cylinder (4), and a polishing part is installed on the slider of the third slide cylinder (6).

3. The mobile phone back cover polishing device according to claim 2, wherein: The polishing section includes a motor mounting plate (7) fixed on the slider of the third slide cylinder (6), and a polishing motor (9) that drives the polishing head (8) is mounted on the motor mounting plate (7).

4. The mobile phone back cover polishing device according to claim 3, wherein: A connecting block (10) is installed at the end of the downward extension of the motor mounting plate (7). The front end of the connecting block (10) is a transition block (11). The cavity inside the transition block (11) is equipped with a drive gear (12) at the end of the output shaft of the polishing motor (9). The drive gear (12) meshes with a driven gear (13) in another cavity inside the transition block (11). The driven gear (13) is installed at the tail end of the polishing head (8).

5. The mobile phone back cover polishing device according to claim 4, wherein: There are two sets of through guide sleeves (14) inside the connecting block (10). A sliding rod (15) is inserted into the guide sleeve (14). The lower end of the sliding rod (15) is fixedly connected to the movable block (16). A spring is installed between the movable block (16) and the connecting block (10). A polishing sleeve (17) is installed at the end of the movable block (16). The polishing head (8) is inserted into the polishing sleeve (17).

6. The mobile phone back cover polishing device according to any one of claims 1-5, characterized in that: The clamping part includes a clamping base (18) fixed on the moving block of the electric lead screw (5). A vertical plate (19) is installed on one side of the clamping base (18). A support block (20) for supporting the back cover of the mobile phone is located at the bottom of the plate (19). A clamping cylinder (21) is installed on the rear side of the plate (19). The telescopic rod of the clamping cylinder (21) drives the clamping head (22) to move back and forth. The clamping head (22) is located on one side of the plate (19). A baffle (23) is located on the other side of the plate (19).

7. The mobile phone back cover polishing device according to claim 6, wherein: A rotary cylinder (24) is movably mounted on the clamping base (18) via a support frame and bearings. Multiple pressure heads (26) are mounted on the rotating sleeve (25) of the rotary cylinder (24). The pressure heads (26) are used to press the back cover of the mobile phone.