Polishing device

Abstract

A grinding device is used for solving the technical problems that a part of existing round pipe grinding devices mentioned in the background technology can only grind one round pipe at a time, an operator needs to repeatedly install and detach the round pipe for grinding machining, and the grinding efficiency is low. Comprising a workbench and a plurality of supporting legs fixedly arranged at the bottom of the workbench, a motor and a supporting plate are fixedly arranged on the two opposite sides of the top of the workbench correspondingly, a first grinding roller is fixedly arranged at the output end of the motor, a second grinding roller is rotationally arranged on the supporting plate in a penetrating mode, and two limiting blocks are fixedly arranged on the second grinding roller and oppositely arranged on the two sides of the supporting plate; a telescopic cylinder is detachably connected between the first grinding roller and the second grinding roller, and the first grinding roller and the second grinding roller are both used for being fixedly sleeved with the hollow round pipe. The inner wall polishing device is simple in structure and mainly used for polishing the inner wall of a hollow circular tube in a five-star chair leg.

Description

Technical Field

[0001] This utility model relates to the field of furniture processing technology, specifically to a sanding device. Background Technology

[0002] Five-star chair legs are the supporting legs of some office chairs, with five casters fixed to them, making the office chair move more nimbly. Some five-star chair legs have a hollow round tube in the center, with five chair legs connected to the outside of the hollow round tube. Because the inner wall of the hollow round tube is rough when it is newly produced, it may cause installation deviations during subsequent chair leg installation. Therefore, the staff needs to grind it.

[0003] Existing technologies include some round tube grinding devices that can only grind one round tube at a time, requiring operators to repeatedly install and disassemble them for grinding, resulting in low grinding efficiency. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a grinding device that solves the technical problem mentioned in the background art: some existing round tube grinding devices can only grind one round tube at a time, requiring operators to repeatedly install and disassemble for grinding, resulting in low grinding efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A grinding device includes a worktable and multiple support legs fixed to the bottom of the worktable. A motor and a support plate are fixed to opposite sides of the top of the worktable. A first grinding roller is fixed to the output end of the motor. A second grinding roller is rotatably passed through the support plate. Two limiting blocks are fixed to the second grinding roller. The two limiting blocks are opposite to each other on both sides of the support plate. A telescopic cylinder is detachably connected between the first grinding roller and the second grinding roller. Both the first grinding roller and the second grinding roller are used to fix a hollow round tube.

[0007] Working principle:

[0008] First, the operator places two hollow tubes onto the first and second grinding rollers respectively. Then, the hollow tubes are positioned by an external device. Next, a telescopic cylinder is installed between the first and second grinding rollers. At this time, the motor is started to drive the first grinding roller to rotate, and the telescopic cylinder drives the second grinding roller to rotate, thereby rotating and grinding the inner walls of the two hollow tubes.

[0009] The beneficial effects of this utility model are as follows:

[0010] In use, this invention allows for simultaneous grinding of two hollow tubes using the first and second grinding rollers, saving time and increasing grinding efficiency. The telescopic cylinder facilitates the installation and disassembly of the first and second grinding rollers, resulting in a simple and easy-to-operate structure. Furthermore, two limiting blocks ensure the second grinding roller is positioned correctly, preventing displacement during rotation and guaranteeing its normal operation. The invention is simple in structure and effective in performance. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the connection structure according to an embodiment of the present utility model;

[0012] Figure 2 for Figure 1 A schematic diagram of the structure without the telescopic cylinder.

[0013] Explanation of reference numerals in the attached drawings: 1. Workbench; 2. Support leg; 3. Motor; 4. Support plate; 5. First grinding roller; 6. Second grinding roller; 7. Limiting block; 8. Telescopic cylinder; 9. Hollow round tube; 10. First bolt; 11. Abutment plate; 12. Support block; 13. Baffle; 14. Pressure plate; 15. Second bolt; 16. Brush bristles; 17. Cavity; 18. Collection drawer; 19. Wire mesh plate; 20. Slide groove; 21. Handle. Detailed Implementation

[0014] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0015] like Figures 1-2As shown, a grinding device includes a worktable 1 and multiple support legs 2 fixed to the bottom of the worktable 1. A motor 3 and a support plate 4 are fixed to opposite sides of the top of the worktable 1, respectively. A first grinding roller 5 is fixed to the output end of the motor 3, and a second grinding roller 6 is rotatably mounted on the support plate 4. A ring of bristles 16 is provided on the adjacent ends of the first grinding roller 5 and the second grinding roller 6. The bristles 16 are used to scrape and remove dust from the inner wall of the hollow round tube 9 after grinding and removal. Two limiting blocks 7 are fixed to the second grinding roller 6. Blocks 7 are positioned opposite each other on both sides of the support plate 4. A telescopic cylinder 8 is detachably connected between the first grinding roller 5 and the second grinding roller 6. Both the first grinding roller 5 and the second grinding roller 6 are used to fix and sleeve the hollow round tube 9. The side of the second grinding roller 6 away from the support plate 4 is threaded. The inner wall of one side of the telescopic cylinder 8 is threaded, and the threaded side of the telescopic cylinder 8 is sleeved on the second grinding roller 6 and the two are threaded together. The other side of the telescopic cylinder 8 is sleeved on the first grinding roller 5. A first bolt 10 is threaded through the telescopic cylinder 8. A threaded rod 10 is inserted into the first grinding roller 5. Two abutment plates 11 are provided on the worktable 1, correspondingly positioned below the first grinding roller 5 and the second grinding roller 6. Each abutment plate 11 has two support blocks 12 fixed to its bottom, which are also fixed to the worktable 1. An arc-shaped baffle 13 is fixed to the support block 12, and a pressure plate 14 opposite to the abutment plate 11 is fixed to the baffle 13. A hollow cylindrical tube 9 is positioned between the abutment plate 11 and the pressure plate 14. Multiple second bolts 15 are threaded through the pressure plate 14. The bolt 15 is threaded through the pressure plate 14 and abuts against the hollow round tube 9. The workbench 1 has two cavities 17 with open tops. Each cavity 17 has a sliding and pull-out collection tray 18. The top of the cavity 17 is fixed with a perforated wire mesh plate 19. The support block 12 is fixed on the wire mesh plate 19. The abutment plate 11 is also a mesh plate structure. The bottom of the workbench 1 has two sliding grooves 20. The two sliding grooves 20 are connected to the two cavities 17 respectively. Each collection tray 18 has a handle 21 that passes through the sliding groove 20 at the bottom.

[0016] The two sides of the telescopic cylinder 8 are connected to its interior; the bristles 16 are glued to the first grinding roller 5 and the second grinding roller 6; the first grinding roller 5, the telescopic cylinder 8, and the second grinding roller 6 are all provided with the same axis; the inner wall of the hollow round tube 9 rotates and abuts against the outer wall of the first grinding roller 5 and the second grinding roller 6.

[0017] Operation method:

[0018] First, the operator places two hollow tubes 9 onto the first grinding roller 5 and the second grinding roller 6 respectively. The hollow tubes 9 are then placed on the abutment plate 11, with the pressure plate 14 pressing down on them. Next, multiple second bolts 15 are screwed in, their threads passing through the pressure plate 14 and abutting against the hollow tubes 9. Then, the operator places the threaded inner wall side of the telescopic cylinder 8 onto the second grinding roller 6, and the other end of the telescopic cylinder 8 onto the first grinding roller 5. A first bolt 10 is then screwed into the telescopic cylinder 8, its threads passing through the cylinder and connecting to the first grinding roller 5. Next, the operator starts the motor 3, rotating the first grinding roller 5, which in turn rotates the second grinding roller 6 via the telescopic cylinder 8, thus grinding the inner walls of the two hollow tubes 9. The debris generated during grinding falls to the top of the workbench 1 and, through the wire mesh plate 19, into the collection drawer 18. When it is necessary to clean the debris in the collection tray 18, the collection tray 18 is pulled out using the handle 21 for debris cleaning. After grinding is completed, the operator unscrews the second bolt 15 and the first bolt 10, and unscrews the telescopic cylinder 8 from the second grinding roller 6. Then, the two telescopic cylinders 8 are removed from the first grinding roller 5 and the second grinding roller 6 respectively. During this process, the brush bristles 16 and the inner wall of the hollow round tube 9 are used to scrape away the dust.

[0019] Beneficial effects:

[0020] The telescopic cylinder 8 facilitates the simultaneous rotation and grinding of two hollow tubes 9, requiring only one motor 3 as the drive device. This design is simple, effective, and saves on the need for a separate drive unit. The second bolt 15 facilitates the abutment and positioning of the hollow tubes 9, preventing displacement during grinding and ensuring grinding efficiency. The brush 16 allows for easy scraping and cleaning of the inner wall of the hollow tubes 9 after grinding, simplifying the process and avoiding the need for additional cleaning operations. The wire mesh plate 19 and the collection tray 18 facilitate the collection of grinding debris, preventing dust and debris from accumulating on the workbench 1 and hindering cleaning.

[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A grinding device, comprising a worktable (1) and a plurality of support legs (2) fixed to the bottom of the worktable (1), characterized in that: A motor (3) and a support plate (4) are fixedly mounted on opposite sides of the top of the workbench (1). A first grinding roller (5) is fixedly mounted on the output end of the motor (3). A second grinding roller (6) is rotatably mounted on the support plate (4). Two limiting blocks (7) are fixedly mounted on the second grinding roller (6). The two limiting blocks (7) are positioned opposite each other on both sides of the support plate (4). A telescopic cylinder (8) is detachably connected between the first grinding roller (5) and the second grinding roller (6). Both the first grinding roller (5) and the second grinding roller (6) are used to fix and sleeve the hollow round tube (9).

2. The polishing device according to claim 1, characterized in that: The second grinding roller (6) has a thread on the side of the rod away from the support plate (4), and the inner wall of the telescopic cylinder (8) has a thread. The threaded side of the telescopic cylinder (8) is sleeved on the second grinding roller (6) and the two are threadedly connected. The other side of the telescopic cylinder (8) is sleeved on the first grinding roller (5). A first bolt (10) is threaded through the telescopic cylinder (8) and the first bolt (10) is threaded into the first grinding roller (5).

3. The polishing device according to claim 1, characterized in that: The workbench (1) is provided with two abutment plates (11), which are located below the first grinding roller (5) and the second grinding roller (6) respectively. Each abutment plate (11) has two support blocks (12) fixed to the bottom of the workbench (1). An arc-shaped baffle (13) is fixed on the support block (12), and a pressure plate (14) opposite to the abutment plate (11) is fixed on the baffle (13). The hollow round tube (9) is located between the abutment plate (11) and the pressure plate (14). Multiple second bolts (15) are threaded through the pressure plate (14), and the multiple second bolts (15) threaded through the pressure plate (14) abut against the hollow round tube (9).

4. A polishing device according to claim 3, characterized in that: The first grinding roller (5) and the second grinding roller (6) each have a ring of bristles (16) on their adjacent ends. The bristles (16) are used to scrape and remove dust from the inner wall of the hollow tube (9) when it is taken out after grinding.

5. A polishing device according to claim 3, characterized in that: The workbench (1) has two cavities (17) with top openings. Each cavity (17) has a sliding and pull-out collection tray (18). The top of the cavity (17) is fixed with a perforated wire mesh plate (19). The support block (12) is fixed on the wire mesh plate (19). The abutment plate (11) is also a mesh plate structure.

6. A polishing device according to claim 5, characterized in that: The workbench (1) has two slides (20) at the bottom, and the two slides (20) are connected to the two cavities (17) respectively. Each collection tray (18) has a handle (21) fixed at the bottom that passes through the slide (20).

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