Polishing and grinding device suitable for mobile phone rear cover plate

Abstract

The utility model discloses a polishing and grinding device suitable for a mobile phone rear cover plate, and relates to the technical field of mobile phone rear cover plate processing, the polishing and grinding device comprises a workbench, the workbench is provided with a triangular rotating table, the rotating table is provided with three placing blocks distributed at diagonal positions, and the placing blocks are provided with elastic adsorption pieces; a rotary driving mechanism for driving the rotary table to rotate is arranged on the workbench; a polishing and grinding mechanism is further arranged on the workbench and used for polishing and grinding the workpiece fixed to the containing block. A notch corresponding to the placing block is formed in the lower end of the rotary table, and an edge jacking mechanism used for jacking the edge of the workpiece is arranged in the notch, so that the edge of the whole workpiece can be effectively polished and ground, the polishing and grinding effect on the workpiece is improved, and the problem that an existing polishing and grinding device is difficult to polish the edge of the workpiece is solved; therefore, manual assistance and machining times are reduced, and machining efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of mobile phone back cover processing technology, and in particular to a polishing and grinding device suitable for mobile phone back covers. Background Technology

[0002] The back cover of a mobile phone, also known as the phone back panel, refers to the cover plate on the back of the phone's casing. As a core component of smartphones, it not only fulfills functional requirements such as protecting internal components and supporting wireless charging, but also directly affects the product's appearance and user experience. The materials and styles of back covers vary between different brands and models. A particularly important step in the production of mobile phone back covers is polishing, which aims to give them a good gloss finish to facilitate further production.

[0003] Currently, with the development of the consumer electronics industry and in order to improve the grip feel, some mobile phones have curved edges on the back cover (such as 3D glass and curved metal). However, existing polishing devices mostly use fixed grinding heads or single-angle feeding methods, which are not adaptable to changes in the curvature of curved edges. This can easily lead to local over-polishing or under-polishing, affecting the smoothness of the edge transition. Alternatively, manual positioning or multiple rework may be required during the polishing process, increasing labor costs.

[0004] Therefore, it is necessary to propose a new technical solution to address the above problems. Utility Model Content

[0005] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a polishing and grinding device suitable for mobile phone back cover, including a worktable, a triangular rotating table on the worktable, three placement blocks distributed diagonally on the rotating table, and elastic adsorption elements on the placement blocks;

[0007] The workbench is equipped with a rotary drive mechanism for driving the rotary table to rotate.

[0008] The workbench is also equipped with a polishing and grinding mechanism for polishing and grinding the workpiece fixed on the placement block.

[0009] The lower end of the rotary table is provided with a slot corresponding to the placement block, and a top edge mechanism for lifting the edge of the workpiece is provided in the slot.

[0010] The top edge mechanism includes a drive source one installed in the slot, the upper end of the drive source one is connected to a turntable, and a triangular block is provided on one side of the upper end of the turntable;

[0011] The top edge mechanism also includes multiple top rods arranged along the four edges of the placement block. The four edges of the placement block are provided with through holes corresponding to the top rods. The upper wall of the slot is provided with a limiting groove corresponding to the through hole. The through hole passes through the placement block and connects with the limiting groove. The upper end of the top rod is flush with the top surface of the placement block, and the lower end extends through the through hole and the limiting groove into the slot.

[0012] The limiting groove is provided with a pad that is sleeved on the top rod, and a traction elastic element is provided between the pad and the top wall of the limiting groove.

[0013] As a further embodiment of this utility model: the upper and lower ends of the top rod and the apex of the triangular block are all rounded.

[0014] As a further embodiment of this utility model: the upper end of the top rod is wrapped with a flexible sleeve.

[0015] As a further embodiment of this utility model: the polishing and grinding mechanism includes a grinding disc and a drive module for driving the grinding disc to perform grinding and adjusting the height of the grinding disc;

[0016] The grinding disc includes a grinding blade located above the placement block. The upper end of the grinding blade is provided with a flexible pad, and the upper end of the flexible pad is provided with a mounting plate. The mounting plate is mounted on the drive module.

[0017] As a further embodiment of this utility model: the drive module includes a vertical plate, a slide rail is provided on one side of the vertical plate, a sliding seat is slidably connected on the slide rail, a second drive source is installed on the sliding seat, and the output end of the second drive source is fixedly connected to the mounting plate;

[0018] The drive module also includes a fixed seat set on the upper part of the upright plate, on which a cylinder is mounted, and the telescopic end of the cylinder passes through the fixed seat and is fixedly connected to the sliding seat.

[0019] As a further embodiment of this utility model: the rotary drive mechanism includes a base plate disposed at the lower end of the worktable, a drive source three is mounted on the base plate, a drive gear is provided at the upper end of the drive source three, and the output end of the drive source three passes through the drive gear and is rotatably connected to the worktable. An output rod is also rotatably connected to the base plate, the upper end of the output rod passes through the worktable and is fixedly connected to the rotary table, and an output gear is provided on the output rod. A synchronous belt is sleeved between the output gear and the drive gear to achieve synchronous rotation, wherein the tooth diameter of the output gear is larger than the tooth diameter of the drive gear.

[0020] As a further embodiment of this utility model: an annular groove is provided on the worktable, and three arc-shaped plates distributed in a triangle are provided at the lower end of the rotary table, and the arc-shaped plates slide in conjunction with the annular groove.

[0021] Compared with existing technologies, the beneficial effects of this technical solution are as follows: When polishing a workpiece (phone back panel), the workpiece is fixed on a placement block by an elastic adsorption component. Then, the surface of the workpiece is polished by a polishing mechanism. During the polishing process, a drive source drives a turntable to rotate, while a triangular block rotates synchronously with the turntable. During rotation, the triangular block contacts multiple push rods in sequence. Through the inclined surface of the triangular block, and guided by the through holes on the placement block, the rotation of the triangular block sequentially drives multiple push rods upwards. The upward lifting mechanism causes the edge of the workpiece to curve upward, making the entire workpiece tilted. This allows the edge of the lifted side of the workpiece to be polished. Multiple lifting rods are evenly arranged along the edge of the placement block. Their sequential upward and downward movements lift and curve each edge of the workpiece in turn, enabling the polishing mechanism to effectively polish the entire edge of the workpiece. This improves the polishing effect and solves the problem that existing polishing devices are unable to polish the edges of workpieces, thereby reducing manual assistance and processing times, and improving processing efficiency.

[0022] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the rotary drive mechanism of this utility model;

[0026] Figure 3 This is a schematic diagram of the polishing and grinding mechanism of this utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the grinding disc of this utility model;

[0028] Figure 5 This is a structural schematic diagram of the rotating platform of this utility model viewed from below;

[0029] Figure 6 This is a schematic diagram of the semi-parabolic structure of the rotary table of this utility model;

[0030] Figure 7This is a schematic diagram of the structure of the push rod of this utility model;

[0031] Figure 8 yes Figure 6 Enlarged schematic diagram of a local structure at point A;

[0032] The corresponding labels in the attached diagram are explained as follows:

[0033] 1. Workbench; 11. Annular groove; 2. Rotary table; 21. Groove opening; 22. Limiting groove; 23. Arc plate; 3. Placement block; 31. Through hole; 4. Elastic adsorption component; 5. Rotary drive mechanism; 51. Base plate; 52. Drive source three; 53. Drive gear; 54. Output rod; 55. Output gear; 56. Synchronous belt; 6. Polishing and grinding mechanism; 61. Grinding disc; 611. Grinding pad; 612. Flexible pad; 613. Mounting plate; 62. Drive module; 621. Vertical plate; 622. Slide rail; 623. Sliding seat; 624. Drive source two; 625. Fixed seat; 626. Cylinder; 7. Top edge mechanism; 71. Drive source one; 72. Turntable; 73. Triangular block; 74. Top rod; 75. Pad plate; 76. Traction elastic element; 77. Flexible sleeve. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Please see Figure 1-8 A polishing and grinding device for mobile phone back cover includes a worktable 1, a triangular rotating table 2 on the worktable 1, three placement blocks 3 distributed diagonally on the rotating table 2, and elastic adsorption elements 4 on the placement blocks 3.

[0036] The worktable 1 is equipped with a rotary drive mechanism 5 for driving the rotary table 2 to rotate;

[0037] The workbench 1 is also equipped with a polishing and grinding mechanism 6, which is used to polish and grind the workpiece fixed on the placement block 3.

[0038] The lower end of the rotary table 2 is provided with a slot 21 corresponding to the placement block 3, and a top edge mechanism 7 for lifting the edge of the workpiece is provided in the slot 21.

[0039] The top edge mechanism 7 includes a drive source 71 installed in the slot 21. The drive source 71 is connected to a turntable 72 at its upper end. A triangular block 73 is provided on one side of the upper end of the turntable 72.

[0040] The top edge mechanism 7 also includes multiple top rods 74 arranged along the four edges of the placement block 3. Through holes 31 corresponding to the top rods 74 are opened on the four edges of the placement block 3. A limiting groove 22 corresponding to the through hole 31 is opened on the upper wall of the slot 21. The through hole 31 passes through the placement block 3 and connects with the limiting groove 22. The upper end of the top rod 74 is flush with the top surface of the placement block 3, and the lower end extends through the through hole 31 and the limiting groove 22 into the slot 21.

[0041] The limiting groove 22 is provided with a pad 75 sleeved on the top rod 74, and a traction elastic element 76 is provided between the pad 75 and the top wall of the limiting groove 22.

[0042] Specifically, when polishing the workpiece (back panel of a mobile phone), the workpiece is fixed to the placement block 3 by the elastic adsorption component 4. Then, the polishing mechanism 6 polishes the surface of the workpiece. During the polishing process, the drive source 71 drives the turntable 72 to rotate, and the triangular block 73 rotates synchronously with the turntable 72. During rotation, the triangular block 73 contacts multiple push rods 74 in sequence. Through the inclined surface of the triangular block 73, and with the push rods guided and restricted by the through hole 31 on the placement block 3, the rotation of the triangular block 73 sequentially drives multiple push rods 74 to push upwards. The upward movement of rod 74 causes the edge of the workpiece to tilt upwards, making the entire workpiece tilted. This allows the edge of the workpiece on the side that is tilted to be polished. Multiple rods 74 are evenly arranged on the edge of the placement block 3. Their sequential upward and downward movement causes each edge of the workpiece to be tilted upwards in turn. This allows the polishing and grinding mechanism 6 to effectively polish and grind the entire edge of the workpiece, thereby improving the polishing and grinding effect and solving the problem that existing polishing and grinding devices are difficult to grind the edges of workpieces. This reduces manual assistance and processing times, and improves processing efficiency.

[0043] Among them, the elastic adsorption component 4 is a suction nozzle made of silicone material. After the workpiece is adsorbed and fixed, a certain gap should be left between the bottom end of the workpiece and the placement block 3. Utilizing the elastic deformation characteristics of silicone, when one edge of the workpiece is pushed up by the push rod 74, the elastic adsorption component 4 can stretch and deform with the tilt of the workpiece, while maintaining the adsorption and fixation of the workpiece.

[0044] Furthermore, the traction elastic element 76 of the limiting groove 22 can traction the pad 75 to fix the initial height of the push rod 74 as a whole. That is, the upper end of the push rod 74 is flush with the top surface of the placement block 3, and the lower end is in the groove 21. The initial position of the lower end of the push rod 74 is between the top surface of the turntable 72 and the top surface of the triangular block 73, avoiding continuous friction between the bottom end of the push rod 74 and the turntable 72, and also allowing the triangular block 73 to better push the push rod 74 upward. Specifically, when the push rod 74 is pushed upward by the rotation of the triangular block 73, the pad 75 will compress the traction elastic element 76. After the triangular block 73 rotates, the push rod 74 moves freely downward to the initial position and is pulled by the traction elastic element 76. The traction elastic element 76 is preferably a spring and is sleeved on the push rod 74.

[0045] Preferably, the upper and lower ends of the push rod 74 and the apex of the triangular block 73 are rounded; this also allows the triangular block 73 to better convert the linear motion force into the power to push the push rod 74 upward.

[0046] More preferably, the upper end of the push rod 74 is wrapped with a flexible sleeve 77 to prevent the push rod 74 from making a hard collision with the workpiece and to protect the workpiece.

[0047] Furthermore, the polishing and grinding mechanism 6 includes a grinding disc 61 and a drive module 62 for driving the grinding disc 61 to perform grinding and adjusting the height of the grinding disc;

[0048] The grinding disc 61 includes a grinding pad 611 located above the placement block 3. A flexible pad 612 is provided at the upper end of the grinding pad 611. A mounting plate 613 is provided at the upper end of the flexible pad 612. The mounting plate 613 is mounted on the drive module 62.

[0049] Specifically, after the workpiece is fixed on the placement block 3, the height of the grinding disc 61 is adjusted by the drive module 62 and driven to rotate, so as to polish the workpiece. When the workpiece is pushed up by the push rod 74 on one side, the workpiece tilts and hits the grinding disc 611. The flexible pad 612 between the grinding disc 611 and the mounting plate 613 can produce elastic deformation, so that the grinding disc 611 deforms with the workpiece when it is squeezed, so as to avoid the workpiece being damaged by hard compression.

[0050] Preferably, the drive module 62 includes a vertical plate 621, a slide rail 622 is provided on one side of the vertical plate 621, a slide seat 623 is slidably connected to the slide rail 622, a second drive source 624 is installed on the slide seat 623, and the output end of the second drive source 624 is fixedly connected to the mounting plate 613.

[0051] The drive module 62 also includes a fixed seat 625 disposed on the upper end of the upright plate 621. A cylinder 626 is mounted on the fixed seat 625. The telescopic end of the cylinder 626 passes through the fixed seat 625 and is fixedly connected to the sliding seat 623.

[0052] Specifically, drive source 624 is used to drive the grinding disc 61 to rotate for polishing the workpiece. The upright plate 621 provides stable support, and the sliding seat 623 is connected to the slide rail 622 on the upright plate 621. Drive source 624 is installed on the sliding seat 623 to ensure the stability of the grinding disc 61. The cylinder 626 installed on the fixed seat 625 is used to adjust the height of the sliding seat 623 and the grinding disc 61.

[0053] Furthermore, the rotary drive mechanism 5 includes a base plate 51 disposed at the lower end of the worktable 1. A drive source 3 52 is mounted on the base plate 51. A drive gear 53 is provided at the upper end of the drive source 3 52. The output end of the drive source 3 52 passes through the drive gear 53 and is rotatably connected to the worktable 1. An output rod 54 is also rotatably connected to the base plate 51. The upper end of the output rod 54 passes through the worktable 1 and is fixedly connected to the rotary table 2. An output gear 55 is provided on the output rod 54. A synchronous belt 56 is sleeved between the output gear 55 and the drive gear 53 to achieve synchronous rotation. The tooth diameter of the output gear 55 is larger than the tooth diameter of the drive gear 53.

[0054] Specifically, when grinding and polishing workpieces, the three placement blocks 3 can place three workpieces at the same time. They can be combined into one station for placing the workpiece, one station for preparation, and one station for processing. Alternatively, one station can be used for placing the workpiece, and two stations can be used for grinding and polishing, i.e., one station for rough grinding and one station for fine grinding. In this case, two polishing and grinding mechanisms 6 need to be set up.

[0055] The drive source 52 drives the drive gear 53 to rotate, and the drive gear 53 drives the output gear 55 through the synchronous belt 56. The output gear 55 then drives the output rod 54 to rotate, and the output rod 54 drives the rotary table 2 to rotate at a specified angle, ensuring that the position of each placement block 3 is accurate after each rotation. The gear ratio between the drive gear 53 and the output gear 55 can achieve a speed reduction effect, so as to better and more accurately control the rotation angle.

[0056] Among them, drive source one 71, drive source two 624 and drive source three 52 are preferably servo motors.

[0057] Furthermore, the worktable 1 is provided with an annular groove 11, and the lower end of the rotary table 2 is provided with three arc-shaped plates 23 arranged in a triangle, and the arc-shaped plates 23 slide in conjunction with the annular groove 11.

[0058] Specifically, when the rotary table 2 rotates, the stability of the rotary table 2 during the rotation process can be improved by the cooperation of the arc plate 23 and the annular groove 11.

[0059] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A polishing and grinding device suitable for mobile phone back covers, characterized in that, Includes a workbench (1), on which a triangular rotating table (2) is provided, and on which three placement blocks (3) are distributed at diagonal positions, and on which elastic adsorption elements (4) are provided; The workbench (1) is provided with a rotary drive mechanism (5) for driving the rotary table (2) to rotate. The workbench (1) is also equipped with a polishing and grinding mechanism (6) for polishing and grinding the workpiece fixed on the placement block (3); The lower end of the rotary table (2) is provided with a slot (21) corresponding to the placement block (3), and a top edge mechanism (7) for lifting the edge of the workpiece is provided in the slot (21). The top edge mechanism (7) includes a drive source (71) installed in the slot (21), and a turntable (72) is connected to the upper end of the drive source (71). A triangular block (73) is provided on one side of the upper end of the turntable (72). The top edge mechanism (7) also includes multiple top rods (74) arranged along the four edges of the placement block (3). The four edges of the placement block (3) are provided with through holes (31) corresponding to the top rods (74). The upper wall of the slot (21) is provided with a limiting groove (22) corresponding to the through hole (31). The through hole (31) passes through the placement block (3) and connects with the limiting groove (22). The upper end of the top rod (74) is flush with the top surface of the placement block (3), and the lower end extends through the through hole (31) and the limiting groove (22) into the slot (21). The limiting groove (22) is provided with a pad (75) sleeved on the top rod (74), and a traction elastic element (76) is provided between the pad (75) and the top wall of the limiting groove (22).

2. The polishing and grinding device for mobile phone back covers according to claim 1, characterized in that, The upper and lower ends of the top rod (74) and the apex of the triangular block (73) are all rounded.

3. The polishing and grinding device for mobile phone back covers according to claim 2, characterized in that, The upper end of the top rod (74) is wrapped with a flexible sleeve (77).

4. The polishing and grinding device for mobile phone back covers according to claim 3, characterized in that, The polishing and grinding mechanism (6) includes a grinding disc (61) and a drive module (62) for driving the grinding disc (61) to perform grinding and adjusting the height of the grinding disc. The grinding disc (61) includes a grinding plate (611) located above the placement block (3). A flexible pad (612) is provided at the upper end of the grinding plate (611). A mounting plate (613) is provided at the upper end of the flexible pad (612). The mounting plate (613) is mounted on the drive module (62).

5. The polishing and grinding device for mobile phone back covers according to claim 4, characterized in that, The drive module (62) includes a vertical plate (621), a slide rail (622) is provided on one side of the vertical plate (621), a sliding seat (623) is slidably connected on the slide rail (622), a second drive source (624) is installed on the sliding seat (623), and the output end of the second drive source (624) is fixedly connected to the mounting plate (613); The drive module (62) also includes a fixed seat (625) set on the upper end of the upright plate (621), on which a cylinder (626) is installed, and the telescopic end of the cylinder (626) passes through the fixed seat (625) and is fixedly connected to the sliding seat (623).

6. The polishing and grinding device for mobile phone back covers according to claim 3, characterized in that, The rotary drive mechanism (5) includes a base plate (51) located at the lower end of the worktable (1). A drive source three (52) is installed on the base plate (51). A drive gear (53) is provided at the upper end of the drive source three (52). The output end of the drive source three (52) passes through the drive gear (53) and is rotatably connected to the worktable (1). An output rod (54) is also rotatably connected on the base plate (51). The upper end of the output rod (54) passes through the worktable (1) and is fixedly connected to the rotary table (2). An output gear (55) is provided on the output rod (54). A synchronous belt (56) is sleeved between the output gear (55) and the drive gear (53) to achieve synchronous rotation. The tooth diameter of the output gear (55) is larger than that of the drive gear (53).

7. The polishing and grinding apparatus for mobile phone back covers according to claim 6, characterized in that, The workbench (1) has an annular groove (11) and the lower end of the rotary table (2) has three arc-shaped plates (23) arranged in a triangle, and the arc-shaped plates (23) slide in cooperation with the annular groove (11).

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