Chamfering device for file box machining
By designing a chamfering device that can simultaneously polish the two corners of a file box, the problem of long processing time of existing equipment has been solved, achieving efficient and precise chamfering processing that is suitable for file boxes of different sizes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZONG YONGTAI ARCHIVES PROD CO LTD
- Filing Date
- 2025-06-03
- Publication Date
- 2026-05-01
AI Technical Summary
Existing file box chamfering equipment is time-consuming, making it difficult to meet the needs of large-scale production, and the grinding precision is not high.
Design a chamfering device that can simultaneously grind two corners of a file box, and adjust the distance of the grinder by means of an electric push rod and a motor to adapt to file boxes of different sizes, prevent movement, and improve grinding accuracy.
It improves the efficiency and precision of chamfering file boxes, adapts to file boxes of different sizes, and meets the needs of large-scale production.
Smart Images

Figure CN224182737U_ABST
Abstract
Description
A chamfering device for file box processing Technical Field
[0001] This utility model relates to the field of file box processing technology, and in particular to a chamfering device for file box processing. Background Technology
[0002] File boxes are rectangular boxes made of materials such as paper, plastic, and wood. They are used to classify and store files, documents, certificates, drawings, and other materials. They have the functions of protecting documents and facilitating management and retrieval. During the handling and storage of file boxes, the sharpness of the right-angled edges can easily cause cuts to the hands of operators. Chamfering can significantly reduce occupational safety hazards.
[0003] Most existing chamfering equipment adopts a single-point grinding or multi-stage processing mode, such as manually flipping the file box or processing the four corners in sequence with a single-axis tool. This results in a long chamfering time for a single file box. When mass-producing multiple file boxes, the production capacity bottleneck is obvious, making it difficult to meet the needs of large-scale production.
[0004] In response to the technical problem that chamfering the four corners sequentially is time-consuming, this application proposes a chamfering device for processing file boxes. Summary of the Invention
[0005] The purpose of this invention is to solve the problem of the time-consuming chamfering of four corners in sequence. It proposes a chamfering device for processing file boxes, which can simultaneously grind two corners of the file box, improving grinding efficiency. It can also adjust the distance between the two grinders according to the size of the file box, adapting to file boxes of different sizes, and can fix file boxes of different sizes to prevent them from moving during grinding, thus improving grinding accuracy.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a chamfering device for processing file boxes, comprising a base, a support seat fixedly connected to the top of the base, a turntable rotatably connected to the inner wall of the support seat, arc-shaped grooves being formed on all four sides of the inner wall of the turntable, the arc-shaped grooves being connected to a fixed plate via a fixing component, a support frame fixedly connected to the top of the base, an electric push rod fixedly connected to the top of the support frame, a movable frame fixedly connected to the driving end of the electric push rod, the bottom end of the movable frame being slidably connected to the top of the support frame, and a second motor fixedly connected to the top of the support frame, the second motor being connected to a grinder via an adjustment component.
[0007] Furthermore, the fixing assembly includes a connecting rod disposed on the inner wall of the arc-shaped groove, a movable rod fixedly connected to the outer wall of the connecting rod, and the inner side of the fixing plate fixedly connected to the outer side of the movable rod.
[0008] Furthermore, the inner wall of the support base is provided with sliding grooves on all four sides, and the outer wall of the moving rod is slidably connected to the inner wall of the sliding groove.
[0009] Furthermore, the adjustment assembly includes a rotating shaft fixedly connected to the drive end of the second motor, a sleeve slidably connected to the outer wall of the rotating shaft, and the outer wall of the sleeve rotatably connected to the inner wall of the movable frame.
[0010] Furthermore, a first bevel gear is fixedly connected to the right end of the sleeve, a second bevel gear is meshed with the outer wall of the first bevel gear, a bidirectional screw is fixedly connected to the rear end of the second bevel gear, and the outer wall of the bidirectional screw is rotatably connected to the inner wall of the movable frame.
[0011] Furthermore, both sides of the outer wall of the bidirectional screw are threaded with connecting blocks, the left end of the connecting block is slidably connected to the inner wall of the movable frame, and the top end of the grinder is fixedly connected to the bottom end of the connecting block.
[0012] Furthermore, a first motor is fixedly connected to the bottom end of the support base, and the bottom end of the turntable is fixedly connected to the drive end of the first motor.
[0013] This utility model has the following beneficial effects:
[0014] 1. In this utility model, two grinders are pushed closer to the file box by an electric push rod, which can grind the two corners of the file box at the same time, improving the grinding efficiency. In addition, the distance between the two grinders can be adjusted according to the size of the file box to adapt to file boxes of different sizes.
[0015] 2. In this utility model, by placing the file box on the support base, and then driving the turntable to rotate through the first motor, the moving rods on the four sides move the fixing plate closer to the file box, thereby fixing file boxes of different sizes, preventing the file box from moving during the grinding process, and improving the grinding accuracy. Attached Figure Description
[0016] Figure 1 is a perspective view of a chamfering device for processing file boxes proposed in this utility model;
[0017] Figure 2 is a cross-sectional view of a support base for a chamfering device for processing file boxes proposed in this utility model;
[0018] Figure 3 is a schematic diagram of the movable frame of a chamfering device for processing file boxes proposed in this utility model.
[0019] Legend:
[0020] 1. Base; 2. Support seat; 3. First motor; 4. Turntable; 5. Arc groove; 6. Connecting rod; 7. Moving rod; 8. Fixing plate; 9. Slide groove; 10. Support frame; 11. Electric push rod; 12. Moving frame; 13. Second motor; 14. Rotating shaft; 15. Sleeve; 16. First bevel gear; 17. Second bevel gear; 18. Double-acting screw; 19. Connecting block; 20. Grinding tool. Detailed Implementation
[0021] 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.
[0022] Referring to Figures 1 and 2, one embodiment of this utility model is provided: a chamfering device for processing file boxes, including a base 1, a support seat 2 fixedly connected to the top of the base 1, a turntable 4 rotatably connected to the inner wall of the support seat 2, an arc-shaped groove 5 on each of the four sides of the inner wall of the turntable 4, a connecting rod 6 on the inner wall of the arc-shaped groove 5, a moving rod 7 fixedly connected to the outer wall of the connecting rod 6, a fixed plate 8 fixedly connected to the outer side of the moving rod 7, a sliding groove 9 on each of the four sides of the inner wall of the support seat 2, the outer wall of the moving rod 7 slidably connected to the inner wall of the sliding groove 9, a first motor 3 fixedly connected to the bottom of the support seat 2, and a drive end of the first motor 3 fixedly connected to the bottom of the turntable 4.
[0023] Specifically, the moving rod 7 slides in the slide groove 9, so that the moving rod 7 can only move in a straight line, thereby restricting the connecting rod 6 to move in a straight line. At this time, when the turntable 4 rotates, the connecting rod 6 will move along the arc groove 5 towards the center of the turntable 4. When the first motor 3 stops rotating, the drive shaft of the first motor 3 will be locked, thereby fixing the turntable 4.
[0024] Referring to Figures 1 and 3, a support frame 10 is fixedly connected to the top of the base 1, an electric push rod 11 is fixedly connected to the top of the support frame 10, a movable frame 12 is fixedly connected to the drive end of the electric push rod 11, the bottom end of the movable frame 12 is slidably connected to the top of the support frame 10, a second motor 13 is fixedly connected to the top of the support frame 10, a rotating shaft 14 is fixedly connected to the drive end of the second motor 13, a sleeve 15 is slidably connected to the outer wall of the rotating shaft 14, the outer wall of the sleeve 15 is rotatably connected to the inner wall of the movable frame 12, a first bevel gear 16 is fixedly connected to the right end of the sleeve 15, a second bevel gear 17 is meshed with the outer wall of the first bevel gear 16, a bidirectional screw 18 is fixedly connected to the rear end of the second bevel gear 17, the outer wall of the bidirectional screw 18 is rotatably connected to the inner wall of the movable frame 12, connecting blocks 19 are threadedly connected to both sides of the outer wall of the bidirectional screw 18, the left end of the connecting block 19 is slidably connected to the inner wall of the movable frame 12, and the top of the grinder 20 is fixedly connected to the bottom end of the connecting block 19.
[0025] Specifically, a controller is installed on the support frame 10. The controller controls the first motor 3, the second motor 13, the electric push rod 11 and the grinder 20 through electrical connection. When the moving frame 12 moves, it will drive the sleeve 15 to slide on the outer wall of the rotating shaft 14. The inner wall of the sleeve 15 is fixedly connected with protrusions on all four sides. The outer wall of the rotating shaft 14 is provided with grooves on all four sides. The protrusions slide on the inner wall of the grooves, which allows the sleeve 15 to slide on the outer wall of the rotating shaft 14. At the same time, the rotating shaft 14 can drive the sleeve 15 to rotate.
[0026] Working principle: In use, place the file box on the support base 2, then start the first motor 3. The first motor 3 drives the turntable 4 to rotate, which in turn drives the arc-shaped grooves 5 on the four sides of the inner wall to rotate. The arc-shaped grooves 5 move the connecting rod 6 towards the center of the turntable 4, and the connecting rod 6 drives the moving rod 7 towards the center of the support base 2, thereby clamping the four side fixing plates 8 onto the outer wall of the file box. Then, start the electric push rod 11 to move the moving frame 12 to the right. The moving frame 12 drives the connecting block 19 to the right through the double-ended screw 18, and the connecting block 19 drives the grinder 2. 0. Approach the file box, then start the second motor 13. The second motor 13 drives the rotating shaft 14 to rotate, which in turn drives the sleeve 15 to rotate. The sleeve 15 drives the first bevel gear 16 to rotate, which in turn drives the second bevel gear 17 to rotate. The second bevel gear 17 drives the double-acting screw 18 to rotate, thereby adjusting the connecting blocks 19 on both sides. This causes the connecting blocks 19 to move the grinder 20 to the corner of the file box. Then, start the grinder 20 to grind the corner, and then flip the file box over and continue the previous operation to chamfer the other side.
[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A chamfering device for processing file boxes, characterized in that, Includes a base (1), a support seat (2) fixedly connected to the top of the base (1), a turntable (4) rotatably connected to the inner wall of the support seat (2), and an arc groove (5) on each of the four sides of the inner wall of the turntable (4). The arc groove (5) is connected to a fixed plate (8) through a fixing component. A support frame (10) is fixedly connected to the top of the base (1), an electric push rod (11) is fixedly connected to the top of the support frame (10), a moving frame (12) is fixedly connected to the driving end of the electric push rod (11), and the bottom end of the moving frame (12) is slidably connected to the top of the support frame (10). A second motor (13) is fixedly connected to the top of the support frame (10), and the second motor (13) is connected to the grinder (20) through an adjustment component.
2. The chamfering device for processing file boxes according to claim 1, characterized in that: The fixing assembly includes a connecting rod (6) disposed on the inner wall of the arc groove (5), a movable rod (7) fixedly connected to the outer wall of the connecting rod (6), and the inner side of the fixing plate (8) fixedly connected to the outer side of the movable rod (7).
3. A chamfering device for processing file boxes according to claim 2, characterized in that: The inner wall of the support base (2) is provided with sliding grooves (9) on all four sides, and the outer wall of the moving rod (7) is slidably connected to the inner wall of the sliding groove (9).
4. A chamfering device for processing file boxes according to claim 1, characterized in that: The adjustment assembly includes a rotating shaft (14) fixedly connected to the drive end of the second motor (13), and a sleeve (15) is slidably connected to the outer wall of the rotating shaft (14), and the outer wall of the sleeve (15) is rotatably connected to the inner wall of the movable frame (12).
5. A chamfering device for processing file boxes according to claim 4, characterized in that: The right end of the sleeve (15) is fixedly connected to a first bevel gear (16), the outer wall of the first bevel gear (16) is meshed with a second bevel gear (17), the rear end of the second bevel gear (17) is fixedly connected to a bidirectional screw (18), and the outer wall of the bidirectional screw (18) is rotatably connected to the inner wall of the movable frame (12).
6. A chamfering device for processing file boxes according to claim 5, characterized in that: Both sides of the outer wall of the bidirectional screw (18) are threaded with connecting blocks (19). The left end of the connecting block (19) is slidably connected to the inner wall of the movable frame (12), and the top end of the grinder (20) is fixedly connected to the bottom end of the connecting block (19).
7. A chamfering device for processing file boxes according to claim 1, characterized in that: The bottom end of the support base (2) is fixedly connected to the first motor (3), and the bottom end of the turntable (4) is fixedly connected to the drive end of the first motor (3).