A polishing device for polishing dents in a housing

By designing a grinding device that includes components such as a mounting box, support plate, anti-slip pad, limit block, and electric push rod, the problem of inconsistent depth when grinding dents on the box body was solved, achieving smooth grinding and dust removal, and improving the grinding effect.

CN224274490UActive Publication Date: 2026-05-26XUCHANG ZHONGZHENG INTELLIGENT EQUIPMENT MANUFACTURING CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
XUCHANG ZHONGZHENG INTELLIGENT EQUIPMENT MANUFACTURING CO LTD
Filing Date
2025-06-27
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing grinding machines lack limiting mechanisms when grinding dents on the surface of the housing, resulting in inconsistent grinding depth and affecting the product's appearance.

Method used

A grinding device was designed, comprising components such as a mounting box, support plate, anti-slip pad, limiting block, electric push rod, lifting rod, clamping block, and lead screw slide. Through the combined use of the limiting block and electric push rod, the device achieves rapid positioning of the box and uniform control of the grinding depth. It is also equipped with a dust cleaning and water spraying system to maintain the smoothness of the grinding.

Benefits of technology

It achieves smooth grinding of dents in the box, prevents deviation during grinding, cleans dust, maintains consistent grinding depth, and improves the product's aesthetics and quality.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

This utility model relates to the field of polishing equipment technology, and discloses a polishing device for polishing dents in a box body. It includes a mounting box, with a support plate hinged to the top of the inner wall of the mounting box. An anti-slip pad is fixedly connected to the center of the upper surface of the support plate. Limiting blocks are fixedly connected to both sides of the upper surface of the anti-slip pad, and a limiting strip is fixedly connected to the center of the upper surface of the anti-slip pad. A first electric push rod is fixedly installed on both sides of the upper surface of the support plate, and a lifting rod is fixedly installed on the top of the first electric push rod. This utility model has the following advantages and effects: it produces a smoother finish during polishing. In use, the box body to be polished is placed on the anti-slip pad, the limiting blocks quickly position the left and right sides of the box body, the back of the box body is attached to the limiting strip to quickly position the front and back sides of the box body, the first electric push rod is activated to drive the lifting rod to descend, and the locking blocks secure the box body at its four corners.
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Description

Technical Field

[0001] This utility model relates to the field of polishing equipment technology, and in particular to a polishing device for polishing dents in a box body. Background Technology

[0002] In the production of some box-type products, dents may occasionally occur due to bumps and knocks, requiring repair and polishing. This necessitates the use of dent polishing equipment.

[0003] A grinding machine is disclosed in Chinese patent publication number CN209565944U. It solves the problem that most existing grinding machines are used by holding the grinding machine shell with the palm facing down and then pushing the grinding machine to perform grinding work. During long-term work, the palms are prone to sweating, making it difficult to hold the grinding machine shell firmly. This can easily lead to the hand slipping and the grinding machine falling.

[0004] While the aforementioned patent solves the problem of slippage and difficulty in gripping, it lacks a limit when polishing dents on the box surface, resulting in inconsistent polishing depth. This can lead to unevenness in the polished product, affecting its appearance. Utility Model Content

[0005] The purpose of this invention is to provide a grinding device for grinding dents in a box, which has the effect of limiting the grinding process to achieve a smoother finish.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a grinding device for grinding dents in a box body, comprising a mounting box, a support plate hinged to the top of the inner wall of the mounting box, an anti-slip pad fixedly connected to the middle of the upper surface of the support plate, limit blocks fixedly connected to both sides of the upper surface of the anti-slip pad, a limit strip fixedly connected to the middle of the upper surface of the anti-slip pad, a first electric push rod fixedly installed to both sides of the upper surface of the support plate, a lifting rod fixedly installed to the top of the first electric push rod, a locking block fixedly installed on the side of the lifting rod near the anti-slip pad, a lead screw slide fixedly installed to the top of the mounting box, a slider slidably connected inside the lead screw slide, a positioning rod fixedly installed to the middle of the upper surface of the slider, a lifting plate movably connected to the outer surface of the positioning rod, a second electric push rod fixedly connected to both sides of the bottom of the lifting plate, a groove opened in the middle of the lifting plate, a support plate slidably connected inside the groove, a first motor fixedly installed in the middle of the support plate, and a grinding disc fixedly installed at the output end of the first motor.

[0007] By adopting the above technical solution, the mounting box is used to install the parts to be polished, the support plate is used to support the box body to be polished, and the anti-slip mat prevents slippage during placement. Before polishing, the mounting box is placed on the anti-slip mat. The limiting block is used to quickly position the left and right positions of the box body before polishing. The back of the box body is attached to the limiting strip to quickly position the front and back positions of the box body. Activating the first electric push rod can drive the lifting rod to descend. The locking blocks are used to lock the four corners of the positioned box body to prevent left, right, front and back displacement during polishing. The lead screw slide is used to drive the slider to move horizontally, and the positioning rod is used to position the lifting plate to prevent left and right displacement during up and down movement. The second electric push rod is connected to the lifting plate at the top and the slider at the bottom, which can drive the lifting plate to rise and fall. The sliding groove in the middle of the lifting plate has a support plate that is slidably connected. Based on the position of the lifting plate, the limiting is achieved. During polishing, the support plate can only slide horizontally in the sliding groove, thereby limiting the polishing disc at the output end of the first motor and ensuring uniform polishing depth.

[0008] A further feature of this invention is that a ramp is fixedly installed in the middle of the inner wall of the mounting box, and a third electric push rod is fixedly installed on the upper surface of the ramp.

[0009] By adopting the above technical solution, the inclined platform is used to install the third electric push rod. The third electric push rod is used to support the support plate during grinding. It is not connected to the support plate and prevents shaking during grinding. After grinding, the body of the third electric push rod retracts. Since the mounting box is hinged to the support plate, the support plate can be tilted, which facilitates cleaning of the dust generated during grinding.

[0010] A further feature of this invention is that a second motor is provided at the bottom of the inclined platform, and a fourth electric push rod is fixedly installed at the output end of the second motor.

[0011] By adopting the above technical solution, the second motor is used to drive the fourth electric push rod to rotate and adjust the angle.

[0012] A further feature of this invention is that a rotating plate is fixedly installed at one end of the fourth electric push rod, and a brush is fixedly connected to the back of the rotating plate.

[0013] By adopting the above technical solution, when dust cleaning is not performed, the second motor is started to drive the fourth electric push rod to rotate, so that the rotating plate is parallel to the support plate. This does not interfere when the support plate tilts into the installation box. After the support plate tilts into the installation box, the second motor is started to drive the rotating plate to rotate, so that the rotating plate is upright. The fourth electric push rod is started to drive the rotating plate to move, so that the brush is in contact with the anti-slip pad. Then the second motor is started again to drive the rotating plate to rotate, thus cleaning the surface dust.

[0014] A further feature of this invention is that a receiving box is fixedly installed at the bottom of the inner wall of the mounting box, and a water pump is fixedly installed at the top of the receiving box.

[0015] By adopting the above technical solution, the receiving box is used to collect dust, and the water pump is used to pressurize the external water source.

[0016] A further feature of this invention is that a hose is fixedly installed at the output end of the water pump, and a nozzle is fixedly installed at one end of the hose.

[0017] By adopting the above technical solution, the hose is used to deliver water to the nozzle, and the nozzle sprays water to clean the anti-slip mat.

[0018] A further feature of this invention is that a third motor is fixedly installed on the top of the water pump, and an adjusting rod is fixedly installed on the output end of the third motor.

[0019] By adopting the above technical solution, the third motor can drive the adjusting rod to adjust the angle. The adjusting rod is connected to the nozzle to expand the spray range, clean the dust on the anti-slip mat, and prevent dust residue from remaining on the anti-slip mat during polishing, thus affecting the smoothness of the polishing.

[0020] A further feature of this invention is that a hinge is fixedly installed in the middle of the outer surface of the mounting box, and a baffle is fixedly installed at the bottom of the hinge.

[0021] By adopting the above technical solution, the hinge makes it easy to open the baffle.

[0022] A further feature of this invention is that an installation rod is fixedly installed in the middle of the baffle, and a handle is fixedly connected to the back of the installation rod.

[0023] By adopting the above technical solution, a handle is fixedly connected to the back of the mounting rod, making it convenient to open the baffle and take out the receiving box.

[0024] A further feature of this invention is that an anti-slip sleeve is fitted onto the outer surface of the handle rod.

[0025] By adopting the above technical solution, the anti-slip sleeve prevents the hand from slipping when pulling the handle.

[0026] The beneficial effects of this utility model are as follows: By setting up an installation box, support plate, anti-slip mat, limit block, limit strip, first electric push rod, lifting rod, locking block, screw slide, slider, positioning rod, lifting plate, second electric push rod, slide groove, support plate, first motor, grinding disc, inclined table, third electric push rod, second motor, fourth electric push rod, rotating plate, brush, receiving box, water pump, hose, nozzle, third motor, adjusting rod, hinge, baffle, installation rod, handle rod, and anti-slip sleeve, the grinding surface is smoother. In use, the box to be ground is placed on the anti-slip mat, the limit block quickly positions the box left and right, the back of the box is attached to the limit strip to quickly position the box front and back, the first electric push rod is activated to drive the lifting rod to descend, the locking block is used to lock the four corners of the positioned box to prevent left, right, front, and back displacement during grinding, the screw slide is activated to drive the slider to move laterally, and the lifting plate is moved to the upper position to be ground. First, the second electric push rod is activated to adjust the height of the lifting plate to determine the grinding depth. During grinding, the first motor is activated to rotate the grinding disc, pushing the support plate along the slide groove. The lifting plate position is used to achieve limit, ensuring uniform grinding depth and a smoother surface. After grinding one section, the third electric push rod is activated to retract the main body. Since the mounting box and support plate are hinged, the support plate can be tilted and enter the mounting box. The second motor is activated to rotate the rotating plate, making it upright. The fourth electric push rod is activated to move the rotating plate, allowing the brush to adhere to the anti-slip mat. The second motor is then activated to rotate the rotating plate again, cleaning surface dust. Simultaneously, the water pump is activated to pressurize the external water source and deliver water to the nozzle through a hose. The nozzle sprays water to clean the anti-slip mat. The third motor is activated to adjust the angle of the adjusting rod, expanding the spray range and cleaning dust from the anti-slip mat to prevent dust residue from affecting the smoothness of the grinding. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments 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.

[0028] Figure 1 This is a schematic diagram of the structure of this utility model;

[0029] Figure 2 This is a schematic diagram of the structure of the support plate of this utility model;

[0030] Figure 3 This is a schematic diagram of the structure of the pallet of this utility model;

[0031] Figure 4 This is a side view sectional structural diagram of the mounting box of this utility model.

[0032] In the diagram, 1. Mounting box; 2. Support plate; 3. Anti-slip mat; 4. Limiting block; 5. Limiting strip; 6. First electric push rod; 7. Lifting rod; 8. Locking block; 9. Screw slide; 10. Slider; 11. Positioning rod; 12. Lifting plate; 13. Second electric push rod; 14. Slide groove; 15. Support plate; 16. First motor; 17. Grinding disc; 18. Inclined platform; 19. Third electric push rod; 20. Second motor; 21. Fourth electric push rod; 22. Rotating plate; 23. Brush; 24. Material receiving box; 25. Water pump; 26. Hose; 27. Nozzle; 28. Third motor; 29. ​​Adjusting rod; 30. Hinge; 31. Baffle; 32. Mounting rod; 33. Handle rod; 34. Anti-slip sleeve. Detailed Implementation

[0033] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0034] Reference Figure 1-4A polishing device for polishing dents on a box body includes a mounting box 1. A support plate 2 is hinged to the top of the inner wall of the mounting box 1. An anti-slip pad 3 is fixedly connected to the middle of the upper surface of the support plate 2. Limiting blocks 4 are fixedly connected to both sides of the upper surface of the anti-slip pad 3. A limiting strip 5 is fixedly connected to the middle of the upper surface of the anti-slip pad. A first electric push rod 6 is fixedly installed on both sides of the upper surface of the support plate 2. A lifting rod 7 is fixedly installed on the top of the first electric push rod 6. A locking block 8 is fixedly installed on the side of the lifting rod 7 near the anti-slip pad 3. A lead screw slide 9 is fixedly installed on the top of the mounting box 1. A slider 10 is slidably connected inside the lead screw slide 9. A positioning rod 11 is fixedly installed in the middle of the upper surface of the slider 10. A lifting plate 12 is movably connected to the outer surface of the positioning rod 11. The lifting plate 12 has two fixed electric push rods 13 on both sides of its bottom. A slide groove 14 is provided in the middle of the lifting plate 12. A support plate 15 is slidably connected inside the slide groove 14. A first motor 16 is fixedly installed in the middle of the support plate 15. A grinding disc 17 is fixedly installed at the output end of the first motor 16. The mounting box 1 is used to install the grinding components. The support plate 2 is used to support the box to be ground. The anti-slip pad 3 prevents slippage during placement. Before grinding, the mounting box 1 is placed on the anti-slip pad 3. The limiting block 4 is used to quickly position the left and right positions of the box before grinding. The back of the box is attached to the limiting strip 5 to quickly position the front and back positions of the box. Activating the first electric push rod 6 can drive the lifting rod 7 to descend. The locking block 8 is used to lock the positioned box. To prevent left, right, forward, and backward displacement during grinding, a lead screw slide 9 drives the slider 10 to move horizontally. A positioning rod 11 positions the lifting plate 12, preventing left and right displacement during vertical movement. A second electric push rod 13 connects to the lifting plate 12 at the top and to the slider 10 at the bottom, allowing the lifting plate 12 to rise and fall. A support plate 15 is slidably connected inside the groove 14 in the middle of the lifting plate 12, achieving a limit based on the position of the lifting plate 12. During grinding, the support plate 15 can only slide horizontally within the groove 14, thus limiting the grinding disc 17 at the output end of the first motor 16, ensuring uniform grinding depth. A ramp 18 is fixedly installed in the middle of the inner wall of the mounting box 1, and a third electric push rod 19 is fixedly installed on the upper surface of the ramp 18. The ramp 18 is used to install the third electric push rod 19. The third electric push rod 19 is used to support the support plate 2 during grinding. It is not connected to the support plate 2 and prevents shaking during grinding. After grinding, the body of the third electric push rod 19 retracts. Since the mounting box 1 is hinged to the support plate 2, the support plate 2 can be tilted to facilitate the cleaning of grinding dust. A second motor 20 is set at the bottom of the inclined platform 18. A fourth electric push rod 21 is fixedly installed at the output end of the second motor 20. The second motor 20 is used to drive the fourth electric push rod 21 to rotate and adjust the angle. A rotating plate 22 is fixedly installed at one end of the fourth electric push rod 21. A brush 23 is fixedly connected to the back of the rotating plate 22. When not cleaning dust, the second motor 20 is started to drive the fourth electric push rod 21 to rotate, so that the rotating plate 22 is parallel to the support plate 2.When the support plate 2 tilts into the mounting box 1, it does not interfere. After the support plate 2 tilts into the mounting box 1, the second motor 20 is started to drive the rotating plate 22 to rotate, making the rotating plate 22 upright. The fourth electric push rod 21 is started to drive the rotating plate 22 to move, so that the brush 23 is in contact with the anti-slip mat 3. The second motor 20 is started again to drive the rotating plate 22 to rotate, cleaning the surface dust. A collection box 24 is fixedly installed at the bottom of the inner wall of the mounting box 1. A water pump 25 is fixedly installed at the top of the collection box 24. The collection box 24 is used to collect dust, and the water pump 25 is used to connect to an external water source for pressurization. A hose 26 is fixedly installed at the output end of the water pump 25. A nozzle 27 is fixedly installed at one end of the hose 26. The hose 26 is used to deliver water to the nozzle 27. The nozzle 27 sprays water to clean the anti-slip mat 3. The top of the water pump 25 is fixedly installed with the fourth electric push rod 21. The third motor 28 has an adjustable rod 29 fixedly installed at its output end. The third motor 28 can drive the adjustable rod 29 to adjust the angle. The adjustable rod 29 is connected to the nozzle 27 to expand the water spray range and clean the dust on the anti-slip mat 3, preventing dust residue from affecting the smoothness of the polishing process. A hinge 30 is fixedly installed in the middle of the outer surface of the mounting box 1. A baffle 31 is fixedly installed at the bottom of the hinge 30, allowing easy opening of the baffle 31. An installation rod 32 is fixedly installed in the middle of the baffle 31, with a handle 33 fixedly connected to its back. This facilitates the removal of the material collection box 24 after opening the baffle 31. An anti-slip sleeve 34 is fitted onto the outer surface of the handle 33 to prevent hand slippage when pulling the handle 33.

[0035] In this invention, the surface is smoother during polishing. During use, the box to be polished is placed on the anti-slip mat 3. The limiting block 4 quickly positions the box left and right. The back of the box is attached to the limiting strip 5 to quickly position the box front and back. The first electric push rod 6 is activated to lower the lifting rod 7. The locking blocks 8 are used to secure the four corners of the positioned box to prevent left, right, front, and back displacement during polishing. The screw slide 9 is activated to drive the slider 10 to move laterally, moving the lifting plate 12 above the position to be polished. The second electric push rod 13 is activated to adjust the height of the lifting plate 12 to determine the polishing depth. During polishing, the first motor 16 is activated to rotate the polishing disc 17, pushing the support plate 15 along the slide groove 14. The lifting plate 12's position ensures consistent polishing depth and a smoother surface. After one is polished, the third electric push rod 19 is activated to retract the main body. Since the mounting box 1 is hinged to the support plate 2, the support plate 2 can be tilted and enter the mounting box 1. The second motor 20 is activated to drive the rotating plate 22 to rotate, making the rotating plate 22 upright. The fourth electric push rod 21 is activated to drive the rotating plate 22 to move, so that the brush 23 fits against the anti-slip mat 3. The second motor 20 is activated again to drive the rotating plate 22 to rotate, cleaning the surface dust. At the same time, the water pump 25 is activated to pressurize the external water source and deliver water to the nozzle 27 through the hose 26. The nozzle 27 sprays water to clean the anti-slip mat 3. The third motor 28 is activated to drive the adjusting rod 29 to adjust the angle and expand the spray range, cleaning the dust on the anti-slip mat 3 and preventing dust residue from affecting the smoothness of the polishing.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A polishing device for polishing dents on a box body, comprising a mounting box (1), characterized in that: The top of the inner wall of the mounting box (1) is hinged to a support plate (2). An anti-slip pad (3) is fixedly connected to the middle of the upper surface of the support plate (2). Limiting blocks (4) are fixedly connected to both sides of the upper surface of the anti-slip pad (3). A limiting strip (5) is fixedly connected to the middle of the upper surface of the anti-slip pad. A first electric push rod (6) is fixedly installed on both sides of the upper surface of the support plate (2). A lifting rod (7) is fixedly installed on the top of the first electric push rod (6). A locking block (8) is fixedly installed on the side of the lifting rod (7) near the anti-slip pad (3). A screw slide is fixedly installed on the top of the mounting box (1). 9) The inside of the lead screw slide (9) is connected to a slider (10). A positioning rod (11) is fixedly installed in the middle of the upper surface of the slider (10). A lifting plate (12) is movably connected to the outer surface of the positioning rod (11). A second electric push rod (13) is fixedly connected to both sides of the bottom of the lifting plate (12). A groove (14) is opened in the middle of the lifting plate (12). A support plate (15) is slidably connected inside the groove (14). A first motor (16) is fixedly installed in the middle of the support plate (15). A grinding disc (17) is fixedly installed at the output end of the first motor (16).

2. A polishing device for polishing dents in a housing according to claim 1, characterized in that: An inclined platform (18) is fixedly installed in the middle of the inner wall of the mounting box (1), and a third electric push rod (19) is fixedly installed on the upper surface of the inclined platform (18).

3. A polishing device for polishing dents in a housing according to claim 2, characterized in that: The bottom of the inclined platform (18) is provided with a second motor (20), and the output end of the second motor (20) is fixedly installed with a fourth electric push rod (21).

4. A polishing device for polishing dents in a housing according to claim 3, characterized in that: A rotating plate (22) is fixedly installed at one end of the fourth electric push rod (21), and a brush (23) is fixedly connected to the back of the rotating plate (22).

5. A polishing device for polishing dents in a housing according to claim 1, characterized in that: A receiving box (24) is fixedly installed on the bottom of the inner wall of the installation box (1), and a water pump (25) is fixedly installed on the top of the receiving box (24).

6. A polishing device for polishing dents in a housing according to claim 5, characterized in that: A hose (26) is fixedly installed at the output end of the water pump (25), and a nozzle (27) is fixedly installed at one end of the hose (26).

7. A polishing device for polishing dents in a housing according to claim 5, characterized in that: A third motor (28) is fixedly installed on the top of the water pump (25), and an adjusting rod (29) is fixedly installed on the output end of the third motor (28).

8. A polishing device for polishing dents in a housing according to claim 1, characterized in that: A hinge (30) is fixedly installed in the middle of the outer surface of the mounting box (1), and a baffle (31) is fixedly installed at the bottom of the hinge (30).

9. A polishing device for polishing dents in a housing according to claim 8, characterized in that: An installation rod (32) is fixedly installed in the middle of the baffle (31), and a handle rod (33) is fixedly connected to the back of the installation rod (32).

10. A polishing device for polishing dents in a housing according to claim 9, characterized in that: The outer surface of the handle (33) is fitted with an anti-slip sleeve (34).