Sanding machine with safety guard

Abstract

The utility model relates to the technical field of sanding machine, the utility model discloses a sanding machine with safety protection structure, including sanding machine body, extension plate and moving plate, the extension plate fixed connection is in the front side of sanding machine, and the moving plate is through the sliding block and the sliding slot sliding connection in the top of extension plate. The utility model discloses through setting first safety protection mechanism and second safety protection mechanism, through the first safety protection mechanism realizes the clamping or loosening of board, avoids the processing error caused by deviation, replaces the shortcoming that traditional worker holds board and processes, through second safety protection mechanism absorbs the dust produced in sanding machine processing, solves the traditional sanding machine when processing board, often by the worker with hand pushes board and processes on the sanding machine, because the polishing speed of sanding machine is fast, very easily makes board from the worker hand and separates and throws out board, will produce dust in the polishing process, harms the health of worker's problem.

Description

Technical Field

[0001] This utility model belongs to the field of sanding machine technology, and in particular relates to a sanding machine with a safety protection structure. Background Technology

[0002] Early surface sanding relied primarily on manual operations (such as hand sanding with sandpaper), which resulted in low efficiency, high labor intensity, and inconsistent surface finish. With the acceleration of industrialization, especially the large-scale development of wood processing and furniture manufacturing, the demand for mechanized sanding equipment arose. In the mid-20th century, the first generation of mechanical sanders (such as flatbed sanders and belt sanders) emerged, using electric motors to drive the abrasive grains, replacing some manual labor and significantly improving production efficiency.

[0003] The problem with the above technology is that when traditional sanders process boards, workers often push the boards onto the sander by hand. Because the sander is fast, the boards can easily slip out of the worker's hands and be thrown out, which is very dangerous. In addition, a lot of dust is generated during the sanding process, and workers who inhale the dust will suffer health damage. Utility Model Content

[0004] In view of the problems existing in the prior art, this utility model provides a sander with a safety protection structure that can overcome or at least partially solve the above problems.

[0005] This utility model is implemented as follows: a sander with a safety protection structure includes a sander body, an extension plate, and a movable plate. The extension plate is fixedly connected to the front side of the sander. The movable plate is slidably connected to the top of the extension plate via a slider and a slide groove. A movable block is slidably connected to the top of the movable plate via a slider and a slide groove. A fixed plate is fixedly connected to one side of the movable block. A first safety protection mechanism is provided on one side of the fixed plate. A second safety protection mechanism is provided on the right side of the sander body.

[0006] To replace the traditional method of workers handling sheet metal by hand, preferably, the first safety protection mechanism includes a bidirectional lead screw rotatably connected to the inner wall of a fixed plate via bearings. The bottom of the bidirectional lead screw penetrates the fixed plate and extends downwards. A clamping plate is fitted onto the surface of the bidirectional lead screw, and the inner wall of the clamping plate is threadedly connected to the bidirectional lead screw. By rotating the bidirectional lead screw, the clamping plates on both sides are driven to move synchronously inwards or outwards, thereby clamping or releasing the sheet metal. The bidirectional lead screw ensures that the sheet metal is centered, avoiding processing errors caused by offset, and replacing the disadvantages of traditional methods of workers handling sheet metal by hand.

[0007] To clean up the dust generated during sanding, preferably, the second safety protection mechanism includes a dust collection hood fixedly connected to the top of the sander. A suction pipe is fixedly connected to the top of the dust collection hood, and a dust collection box is fixedly connected to the other end of the suction pipe. A filter screen is fixedly connected to the inner wall of the dust collection box. The left side of the dust collection box is fixedly connected to the sander body, and a vacuum cleaner is installed on the right side of the dust collection box. A support plate is fixedly connected to the bottom of the dust collection box. The vacuum cleaner collects the dust generated by the sander through the dust collection hood, and transports it to the dust collection box through the suction pipe. The filter screen filters the dust, improving the working environment for the workers.

[0008] To improve the sanding quality of the board, preferably, a servo motor is fixedly connected to the top of the moving plate, and a reciprocating lead screw is fixedly connected to the output end on the right side of the servo motor. One end of the reciprocating lead screw passes through the moving block and extends outward. The inner wall of the moving block is slidably connected to the surface of the reciprocating lead screw. A slide rod is slidably connected in the threaded groove on the surface of the reciprocating lead screw. The other end of the slide rod extends to the inner wall of the moving block and is fixedly connected to the moving block. The servo motor drives the reciprocating lead screw to rotate clockwise, and the slide rod slides in the threaded groove, causing the moving block to make a linear reciprocating motion along the lead screw. This drives the board to pass through the sanding area of ​​the sander at a constant speed, keeping the board's movement speed constant and avoiding local over-sanding or insufficient sanding force.

[0009] To accommodate workpieces of different sizes, preferably, a support plate is fixedly connected to the front side of the extension plate. A screw is rotatably connected to the inner wall of the support plate via a bearing. One end of the screw passes through the support plate and is fixedly connected to a handwheel. The other end of the screw passes through the movable plate and extends outward. The surface of the screw is threadedly connected to the inner wall of the movable plate. Rotating the handwheel drives the screw to rotate. The movable plate engages with the screw via threads to achieve fine-tuning of its front and rear positions, quickly adjusting the relative position of the plate and the sander to accommodate workpieces of different sizes.

[0010] To prevent dust accumulation on the filter screen from reducing the filtration effect, preferably, a missing gear is fixedly connected to the end of the reciprocating screw away from the servo motor. The missing gear meshes with a toothed plate. An impact block is fixedly connected to the rear end of the toothed plate. A sliding hole is opened on the inner wall of the toothed plate. A round rod is slidably connected to the inner wall of the sliding hole. The other end of the round rod extends to the outer side of the toothed plate and is fixedly connected to a limit plate. A spring is fixedly connected to the front side of the toothed plate. The other end of the spring is fixedly connected to the limit plate. The rear side of the limit plate is fixedly connected to the dust collection box. The reciprocating screw drives the missing gear to rotate, intermittently meshing with the toothed plate. Under the action of the spring, the toothed plate reciprocates and impacts the dust collection box, shaking off the dust accumulated on the filter screen.

[0011] To improve the stability of the high-reciprocating lead screw, preferably, a first fixing block is movably sleeved on the surface of the reciprocating lead screw. The inner wall of the first fixing block is rotatably connected to the surface of the reciprocating lead screw through a bearing. The bottom of the first fixing block is fixedly connected to a moving plate. A stabilizing plate is slidably connected to the right side of the clamping plate through a slider and a groove. The left side of the stabilizing plate is fixedly connected to the moving block. The first fixing block is used to support the reciprocating lead screw, reduce vibration, and improve transmission accuracy. The stabilizing plate is used to assist the clamping plate in sliding and enhance clamping stability.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model incorporates a first safety protection mechanism and a second safety protection mechanism. The first safety protection mechanism clamps or releases the board material, while the bidirectional lead screw ensures the board is centered, preventing processing errors caused by misalignment. This replaces the traditional method of workers manually handling the board. The second safety protection mechanism absorbs the dust generated by the sander, improving the worker's working environment. This solves the problem that in traditional sanders, workers often push the board onto the machine by hand, which is dangerous due to the high sanding speed and the risk of the board slipping out of their hands and being thrown out. Furthermore, the sanding process generates a large amount of dust, which can harm the worker's health if inhaled. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural schematic diagram provided in an embodiment of the present utility model; Figure 2 This is a schematic diagram of the structure of the first safety protection mechanism provided in this embodiment of the utility model; Figure 3 This is a schematic diagram of the structure of the servo motor and reciprocating lead screw provided in this embodiment of the utility model; Figure 4 This is a schematic diagram of the structure of the second safety protection mechanism provided in this embodiment of the utility model; Figure 5 This is provided by the embodiment of the present utility model. Figure 2 Schematic diagram of the structure at point A; Figure 6 This is provided by the embodiment of the present utility model. Figure 4 A schematic diagram of the structure at point B.

[0014] In the diagram: 1. Sander body; 2. Extension plate; 3. Moving plate; 4. Moving block; 5. Fixed plate; 6. First safety protection mechanism; 601. Bidirectional lead screw; 602. Clamping plate; 7. Second safety protection mechanism; 701. Dust collection hood; 702. Suction pipe; 703. Dust collection box; 704. Filter screen; 705. Vacuum cleaner; 8. Stabilizing plate; 9. Servo motor; 10. Reciprocating lead screw; 11. Slide rod; 12. Support plate; 13. Screw; 14. Handwheel; 15. Gear missing; 16. Tooth plate; 17. Impact block; 18. Sliding hole; 19. Round rod; 20. Spring; 21. Limiting plate; 22. First fixed block; 23. Support plate. Detailed Implementation

[0015] To further understand the invention content, features and effects of this utility model, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.

[0016] The structure of this utility model will now be described in detail with reference to the accompanying drawings.

[0017] like Figures 1 to 6 As shown in the figure, the sander with a safety protection structure provided in this embodiment of the utility model includes a sander body 1, an extension plate 2 and a movable plate 3. The extension plate 4 is fixedly connected to the front side of the sander. The movable plate 3 is slidably connected to the top of the extension plate 2 through a slider and a slide groove. A movable block 4 is slidably connected to the top of the movable plate 3 through a slider and a slide groove. A fixed plate 5 is fixedly connected to one side of the movable block 4. A first safety protection mechanism 6 is provided on one side of the fixed plate 5. A second safety protection mechanism 7 is provided on the right side of the sander body 1.

[0018] To replace the traditional method of workers handling sheet metal by hand, the first safety protection mechanism 6 includes a bidirectional lead screw 601 rotatably connected to the inner wall of the fixed plate 5 via bearings. The bottom of the bidirectional lead screw 601 penetrates the fixed plate 5 and extends downwards. A clamping plate 602 is fitted onto the surface of the bidirectional lead screw 601. The inner wall of the clamping plate 602 is threadedly connected to the bidirectional lead screw 601. By rotating the bidirectional lead screw 601, the clamping plates 602 on both sides are driven to move inwards or outwards synchronously, thereby clamping or releasing the sheet metal. The bidirectional lead screw 601 ensures that the sheet metal is centered, avoiding processing errors caused by offset, and replacing the disadvantages of traditional methods of workers handling sheet metal by hand.

[0019] To clean up the dust generated during sanding, the second safety protection mechanism 7 includes a dust collection hood 701 fixedly connected to the top of the sander. A suction pipe 702 is fixedly connected to the top of the dust collection hood 701, and a dust collection box 703 is fixedly connected to the other end of the suction pipe 702. A filter screen 704 is fixedly connected to the inner wall of the dust collection box 703. The left side of the dust collection box 703 is fixedly connected to the sander body 1, and a vacuum cleaner 705 is installed on the right side of the dust collection box 703. A support plate 23 is fixedly connected to the bottom of the dust collection box 703. The vacuum cleaner 705 collects the dust generated by the sander through the dust collection hood 701 and transports it to the dust collection box 703 through the suction pipe 702. The filter screen 704 filters the dust, thus improving the working environment for the workers.

[0020] To improve the sanding quality of the board, a servo motor 9 is fixedly connected to the top of the moving plate 3. A reciprocating lead screw 10 is fixedly connected to the output end of the servo motor 9 on the right side. One end of the reciprocating lead screw 10 passes through the moving block 4 and extends outward. The inner wall of the moving block 4 is slidably connected to the surface of the reciprocating lead screw 10. A slide rod 11 is slidably connected in the threaded groove on the surface of the reciprocating lead screw 10. The other end of the slide rod 11 extends to the inner wall of the moving block 4 and is fixedly connected to the moving block 4. The servo motor 9 drives the reciprocating lead screw 10 to rotate clockwise. The slide rod 11 slides in the threaded groove, causing the moving block 4 to make a linear reciprocating motion along the lead screw. This drives the board to pass through the sanding area of ​​the sander at a constant speed, keeping the board's movement speed constant and avoiding local over-sanding or insufficient sanding force.

[0021] To accommodate workpieces of different sizes, a support plate 12 is fixedly connected to the front side of the extension plate 2. A screw 13 is rotatably connected to the inner wall of the support plate 12 via a bearing. One end of the screw 13 passes through the support plate 12 and is fixedly connected to a handwheel 14. The other end of the screw 13 passes through the movable plate 3 and extends outward. The surface of the screw 13 is threadedly connected to the inner wall of the movable plate 3. Rotating the handwheel 14 drives the screw 13 to rotate. The movable plate 3 is threadedly engaged with the screw 13 to achieve fine adjustment of its front and rear positions, quickly adjusting the relative position of the plate and the sander to accommodate workpieces of different sizes.

[0022] To prevent dust accumulation on the filter screen 704 from reducing the filtration effect, a missing gear 15 is fixedly connected to the end of the reciprocating screw 10 away from the servo motor 9. The missing gear 15 meshes with a toothed plate 16. An impact block 17 is fixedly connected to the rear end of the toothed plate 16. A sliding hole 18 is opened on the inner wall of the toothed plate 16. A round rod 19 is slidably connected to the inner wall of the sliding hole 18. The other end of the round rod 19 extends to the outer side of the toothed plate 16 and is fixedly connected to a limit plate 21. A spring 20 is fixedly connected to the front side of the toothed plate 16. The other end of the spring 20 is fixedly connected to the limit plate 21. The rear side of the limit plate 21 is fixedly connected to the dust collection box 703. The reciprocating screw 10 drives the missing gear 15 to rotate, intermittently meshing with the toothed plate 16. Under the action of the spring 20, the toothed plate 16 reciprocates and impacts the dust collection box 703, shaking off the dust accumulated on the filter screen 704.

[0023] To improve the stability of the reciprocating lead screw 10, a first fixing block 22 is movably sleeved on the surface of the reciprocating lead screw 10. The inner wall of the first fixing block 22 is rotatably connected to the surface of the reciprocating lead screw 10 through a bearing. The bottom of the first fixing block 22 is fixedly connected to the moving plate 3. A stabilizing plate 8 is slidably connected to the right side of the clamping plate 602 through a slider and a slide groove. The left side of the stabilizing plate 8 is fixedly connected to the moving block 4. The first fixing block 22 is used to support the reciprocating lead screw 10, reduce vibration, and improve transmission accuracy. The stabilizing plate 8 is used to assist the clamping plate 602 in sliding and enhance clamping stability.

[0024] The working principle of this utility model: In use, rotating the bidirectional lead screw 601 drives the two clamping plates 602 to move inward or outward synchronously, clamping or releasing the sheet metal. The bidirectional lead screw 601 ensures the sheet metal is centered, avoiding processing errors caused by offset, and replacing the disadvantage of traditional manual processing by hand. Rotating the handwheel 14 drives the screw 13 to rotate, and the moving plate 3 engages with the screw 13 through the thread to achieve fine adjustment of its front and back position, quickly adjusting the relative position of the sheet metal and the sander. After adjustment, the sander is started for processing, and then the servo motor 9 is started to drive the reciprocating lead screw 10 to rotate clockwise. The slide bar 11 slides in the thread groove, causing the moving block 4 to move along the thread. The lever makes a linear reciprocating motion, driving the board at a constant speed through the sanding area of ​​the sander, keeping the board's movement speed constant and avoiding local over-sanding or insufficient sanding force. At the same time, the vacuum cleaner 705 is started, collecting the dust generated by the sander through the dust collection hood 701 and conveying it to the dust collection box 703 through the suction pipe 702. The filter screen 704 filters the dust, improving the working environment for the workers. The reciprocating screw 10 simultaneously drives the misaligned gear 15 to rotate, intermittently meshing with the toothed plate 16. Under the action of the spring 20, the toothed plate 16 reciprocates and impacts the dust collection box 703, shaking off the accumulated dust on the filter screen 704. After the work is completed, the dust collection box 703 can be opened for cleaning.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can exercise their rights without departing from the scope of the present utility model.

Claims

1. A sander with a safety protection structure, comprising a sander body (1), an extension plate (2), and a movable plate (3), wherein the extension plate (2) is fixedly connected to the front side of the sander, and the movable plate (3) is slidably connected to the top of the extension plate (2) via a slider and a groove, characterized in that: The top of the movable plate (3) is slidably connected to a movable block (4) via a slider and a groove. A fixed plate (5) is fixedly connected to one side of the movable block (4). A first safety protection mechanism (6) is provided on one side of the fixed plate (5). A second safety protection mechanism (7) is provided on the right side of the sander body (1).

2. A sander with a safety protection structure as described in claim 1, characterized in that: The first safety protection mechanism (6) includes a bidirectional lead screw (601) rotatably connected to the inner wall of the fixed plate (5) via a bearing. The bottom of the bidirectional lead screw (601) passes through the fixed plate (5) and extends downward. A clamping plate (602) is sleeved on the surface of the bidirectional lead screw (601). The inner wall of the clamping plate (602) is threadedly connected to the bidirectional lead screw (601).

3. A sander with a safety protection structure as described in claim 1, characterized in that: The second safety protection mechanism (7) includes a dust collection hood (701) fixedly connected to the top of the sander. The top of the dust collection hood (701) is fixedly connected to a suction pipe (702). The other end of the suction pipe (702) is fixedly connected to a dust collection box (703). A filter screen (704) is fixedly connected to the inner wall of the dust collection box (703). The left side of the dust collection box (703) is fixedly connected to the sander body (1). A vacuum cleaner (705) is provided on the right side of the dust collection box (703). A support plate (23) is fixedly connected to the bottom of the dust collection box (703).

4. A sander with a safety protection structure as described in claim 2, characterized in that: A servo motor (9) is fixedly connected to the top of the moving plate (3). A reciprocating screw (10) is fixedly connected to the output end on the right side of the servo motor (9). One end of the reciprocating screw (10) passes through the moving block (4) and extends outward. The inner wall of the moving block (4) is slidably connected to the surface of the reciprocating screw (10). A slide rod (11) is slidably connected in the threaded groove on the surface of the reciprocating screw (10). The other end of the slide rod (11) extends to the inner wall of the moving block (4) and is fixedly connected to the moving block (4).

5. A sander with a safety protection structure as described in claim 1, characterized in that: A support plate (12) is fixedly connected to the front side of the extension plate (2). A screw (13) is rotatably connected to the inner wall of the support plate (12) through a bearing. One end of the screw (13) passes through the support plate (12) and is fixedly connected to a handwheel (14). The other end of the screw (13) passes through the moving plate (3) and extends outward. The surface of the screw (13) is threadedly connected to the inner wall of the moving plate (3).

6. A sander with a safety protection structure as described in claim 4, characterized in that: The reciprocating screw (10) is fixedly connected to a missing gear (15) at one end away from the servo motor (9). The missing gear (15) meshes with a toothed plate (16). An impact block (17) is fixedly connected to the rear end of the toothed plate (16). A sliding hole (18) is provided on the inner wall of the toothed plate (16). A round rod (19) is slidably connected to the inner wall of the sliding hole (18). The other end of the round rod (19) extends to the outside of the toothed plate (16) and is fixedly connected to a limiting plate (21). A spring (20) is fixedly connected to the front side of the toothed plate (16). The other end of the spring (20) is fixedly connected to the limiting plate (21). The rear side of the limiting plate (21) is fixedly connected to the dust collection box (703).

7. A sander with a safety protection structure as described in claim 4, characterized in that: The surface of the reciprocating screw (10) is movably fitted with a first fixing block (22). The inner wall of the first fixing block (22) is rotatably connected to the surface of the reciprocating screw (10) through a bearing. The bottom of the first fixing block (22) is fixedly connected to the moving plate (3). The right side of the clamping plate (602) is slidably connected to a stabilizing plate (8) through a slider and a groove. The left side of the stabilizing plate (8) is fixedly connected to the moving block (4).

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