A precision belt sander

Abstract

The application relates to a precision abrasive belt machine and belongs to the abrasive belt machine field. The abrasive belt machine comprises a machine body and a pressing piece. The machine body comprises a rack, a fixing screw is vertically assembled on the bottom surface of the rack, driving rollers are symmetrically and vertically connected on the top surface of the rack, a driving motor is vertically fixed on the rack, the output end of the driving motor is fixed on the rotating shaft of the driving roller, an abrasive belt is tightly connected on the driving roller of the rack, the pressing piece comprises a sliding frame, the sliding frame is vertically fixed on the one side end surface of the rack, a moving frame is horizontally arranged in the sliding frame, the moving frame is vertically and slidingly assembled in the sliding frame, and a clamping piece is vertically arranged in the moving frame. The application does not need manpower to hold and press a workpiece on the abrasive belt, the workpiece is clamped by the pressing piece, the workpiece is pressed on the abrasive belt, when the high-speed running abrasive belt polishes the workpiece, the abrasive belt can avoid causing damage to the hands of workers, and the safety hidden danger during machining is reduced.

Description

Technical Field

[0001] This application relates to the technical field of belt sanders, and in particular to a precision belt sander. Background Technology

[0002] Belt sanders are widely used for grinding the surfaces of various parts made of metal, non-ferrous metals and non-metals. They can also grind the surfaces of parts of different shapes using a guide wheel. The belt sander includes a sanding belt, a sanding belt housing, a motor, a motor housing, a handle, a drive wheel, a driven wheel, and a transmission device connecting the motor and the drive wheel. The motor housing and the handle are integrally connected to form a unit, and a connecting device connects the unit to the sanding belt housing.

[0003] The existing announcement number CN202412007U, entitled "A Belt Sander," includes a motor, a coupling, a drive shaft, a sanding belt, and a transmission shaft. A tension adjustment device is provided between the drive shaft and the transmission shaft to ensure the sanding belt is taut. The motor and drive shaft are connected by the coupling, and a sanding belt support roller is mounted on the drive shaft. The tension adjustment device employs an upper and lower wedge tensioning mating surface structure and a spring structure. The upper tension adjustment mechanism has a spring structure inside, and its bottom has a wedge-shaped mating surface structure with the same angle as the lower tensioning block. Force is transmitted to the wedge block through a spinning pin to adjust the tension of the drive shaft and the transmission shaft. The structure is simple and reasonable, and the manufacturing cost is low.

[0004] Regarding the aforementioned technologies, the inventors discovered that when a sanding belt on a belt sander is used to grind workpieces, it requires manual hand-holding to press the workpiece onto the sanding belt. The belt sander lacks auxiliary pressing components for grinding workpieces, and the high-speed sanding belt can cause injury to the worker's hands, posing a safety hazard during processing. Utility Model Content

[0005] In order to overcome the lack of auxiliary pressing components in existing belt sanders for workpiece grinding, which can cause damage to workers' hands and pose safety hazards during processing due to the high-speed operation of the sanding belt, this application provides a precision belt sander.

[0006] The precision belt sander provided in this application adopts the following technical solution: A precision belt sander includes a sander body and a pressing component. The sander body includes a frame, with a fixing screw vertically threaded through the bottom surface of the frame. A drive roller is symmetrically and vertically rotatably connected to the top surface of the frame. A drive motor is vertically fixed on the frame, and the output end of the drive motor is fixed to the rotating shaft of the drive roller. A sanding belt is tensioned and connected to the drive roller of the frame. The pressing component includes a slide frame, which is vertically fixed to one end face of the frame. A movable frame is horizontally arranged within the slide frame, and a clamping component is vertically arranged within the movable frame. The clamping component includes a hole frame, which is vertically arranged above the movable frame. A movable block is vertically fixed to the bottom surface of the hole frame and horizontally slidably assembled within the movable frame.

[0007] By adopting the above technical solution, the pressure frame slides vertically upward on the hole frame during use, compressing the deformation of the pressure spring. The workpiece to be ground is vertically placed on the hole frame of the clamping part of the pressing part. When the pressure frame is released, under the deformation force of the pressure spring, the pressure frame is pushed to press the workpiece in the hole frame. Then, the sliding clamping part moves towards the sanding belt of the belt sander body in the moving frame, pushing the workpiece against the sanding belt for grinding. The drive motor is started to drive the drive roller to rotate, driving the sanding belt to grind the workpiece. Thus, it is not necessary to manually hold and press the workpiece on the sanding belt. The workpiece is clamped by the pressing part and pushed to press the workpiece on the sanding belt. When the high-speed sanding belt grinds the workpiece, it avoids the sanding belt from causing injury to the worker's hands and reduces the safety hazards during processing.

[0008] Optionally, a pressure frame is vertically slidably assembled on the top surface of the hole frame, a guide rod is vertically fixed on the top surface of the pressure frame, and the guide rod of the pressure frame is vertically slidably inserted through the top surface of the hole frame. A downward pressure spring is vertically installed above the hole frame, and the two ends of the downward pressure spring are respectively fixed on the top surface of the hole frame and the pressure frame.

[0009] By adopting the above technical solution, the pressure frame is pulled vertically upward on the hole frame, compressing the deformation of the pressure spring, and the workpiece to be ground is vertically placed on the hole frame of the clamping part of the pressing part. When the pressure frame is released, under the deformation force of the pressure spring, the pressure frame is pushed to press the workpiece in the hole frame, ensuring the stability of the workpiece grinding.

[0010] Optionally, a screw is horizontally arranged in the slide frame, and one end of the screw is rotatably connected to the end face of the slide frame.

[0011] By adopting the above technical solution, the screw on the sliding frame is rotated to push the clamping parts to hold the workpiece for grinding on the sanding belt.

[0012] Optionally, a threaded hole is horizontally opened through the middle of the slider, and the threaded hole is threadedly connected to the screw rod.

[0013] By adopting the above technical solution, rotating the screw on the slide frame drives the slider to move horizontally in the moving frame, causing the clamped workpiece to contact the abrasive belt and perform grinding on the workpiece.

[0014] Optionally, sliders are vertically fixed on both sides of the movable frame, and the sliders are vertically slidably assembled in the sliding frame.

[0015] By adopting the above technical solution, the slider on the moving frame moves vertically within the sliding frame, thereby vertically adjusting the grinding position of the workpiece.

[0016] Optionally, a hydraulic rod is vertically fixed on the bottom surface of the sliding frame, and the output end of the hydraulic rod is fixed on the bottom surface of the moving frame.

[0017] By adopting the above technical solution, the hydraulic rod is activated to extend and retract, driving the moving frame to move vertically within the slide frame, which facilitates vertical adjustment of the workpiece's grinding position.

[0018] Optionally, a slide is horizontally fixed on the side of the frame away from the pressing element, and a movable rotating plate is horizontally movable on the slide. A drive roller is vertically rotatably connected to the movable rotating plate, and the drive roller is tensioned and pressed against the sanding belt.

[0019] By adopting the above technical solution, the drive roller on the moving plate is used to tension the drive sanding belt.

[0020] Optionally, a slide bar is horizontally fixed on the movable rotating plate, and the slide bar is horizontally slidably assembled in the carriage. One end of the slide bar is horizontally fixed with a tension spring, and the other end of the tension spring is fixed to the frame.

[0021] By adopting the above technical solution, when tensioning the sanding belt, the slide bar on the moving plate slides horizontally on the slide frame. Under the support of the deformation force of the tensioning spring, the slide bar pushes the drive roller on the moving plate to tension the sanding belt.

[0022] In summary, this application includes at least one of the following beneficial technical effects: During use, the pull-up pressure frame slides vertically upward on the hole frame, compressing the deformation of the pressure spring, vertically setting the workpiece to be ground on the hole frame of the clamping member of the pressing member. When the pressure frame is released, under the deformation force of the pressure spring, the pressure frame is pushed to press the workpiece in the hole frame. Then, the sliding clamping member moves towards the sanding belt of the belt sander body in the moving frame, pushing the workpiece against the sanding belt for grinding. The drive motor is started to drive the drive roller to rotate, driving the sanding belt to grind the workpiece. Thus, it is not necessary for manual hand-holding to press the workpiece on the sanding belt. The workpiece is clamped by the pressing member and pushed to press the workpiece on the sanding belt. When the high-speed running sanding belt grinds the workpiece, it avoids the sanding belt from causing injury to the worker's hands and reduces the safety hazards during processing. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0024] Figure 2 This is a schematic diagram of the overall structure of the embodiment of this application in an exploded state; Figure 3 This is a schematic diagram of the structure of the belt sander body in the disassembled state according to an embodiment of this application; Figure 4 This is a schematic diagram of the pressing component in the disassembled state according to an embodiment of this application; Figure 5 This is a schematic diagram of the clamping component in the disassembled state according to an embodiment of this application.

[0025] Explanation of reference numerals in the attached drawings: 1. Belt sander body; 11. Frame; 111. Fixing screw; 12. Drive roller; 13. Drive motor; 14. Slide; 15. Moving plate; 16. Slide bar; 17. Tension spring; 18. Sanding belt; 2. Pressing component; 21. Slide frame; 22. Hydraulic rod; 23. Moving frame; 24. Slider; 25. Screw; 26. Clamping component; 261. Hole frame; 262. Moving block; 263. Screw hole; 264. Pressure frame; 265. Downward pressure spring. Detailed Implementation

[0026] The present application will be further described in detail below with reference to the accompanying drawings.

[0027] This application discloses a precision belt sander. (Refer to...) Figure 1 , Figure 2 , Figure 4 and Figure 5 A precision belt sander includes a sander body 1 and a pressing component 2. The sander body 1 includes a frame 11, with fixing screws 111 vertically penetrating the bottom surface of the frame 11. Drive rollers 12 are symmetrically and vertically rotatably connected to the top surface of the frame 11. A drive motor 13 is vertically fixed on the frame 11, and the output end of the drive motor 13 is fixed to the rotating shaft of the drive roller 12. A sanding belt 18 is tensioned and connected to the drive roller 12 of the frame 11. The pressing component 2 includes a sliding component... The frame 21 and the sliding frame 21 are vertically fixed on one side end face of the frame 11. A movable frame 23 is horizontally arranged in the sliding frame 21. The movable frame 23 is vertically slidably assembled in the sliding frame 21. A clamping member 26 is vertically arranged in the movable frame 23. The clamping member 26 includes a hole frame 261, which is vertically arranged above the movable frame 23. A movable block 262 is vertically fixed on the bottom surface of the hole frame 261. The movable block 262 is horizontally slidably assembled in the movable frame 23.

[0028] By adopting the above technical solution, the pressure frame 264 slides vertically upward on the hole frame 261 during use, compressing the downward pressure spring 265 to deform, and vertically setting the workpiece to be ground on the hole frame 261 of the clamping member 26 of the pressing member 2. When the pressure frame 264 is released, under the deformation force of the downward pressure spring 265, the pressure frame 264 is pushed to press the workpiece in the hole frame 261. Then, the sliding clamping member 26 moves towards the sanding belt 18 of the sander body 1 in the moving frame 23, pushing the workpiece against the sanding belt 18 for grinding. The drive motor 13 is started to drive the drive roller 12 to rotate, driving the sanding belt 18 to grind the workpiece. Thus, it is not necessary for manual hand-holding to press the workpiece on the sanding belt 18. The workpiece is clamped by the pressing member 2 and pushed to press the workpiece on the sanding belt 18. When the high-speed running sanding belt 18 grinds the workpiece, it avoids the sanding belt 18 from causing injury to the worker's hands and reduces the safety hazards during processing.

[0029] Reference Figure 5 A pressure frame 264 is vertically slidably assembled on the top surface of the hole frame 261. A guide rod is vertically fixed on the top surface of the pressure frame 264, and the guide rod of the pressure frame 264 is vertically slidably inserted through the top surface of the hole frame 261. A downward pressure spring 265 is vertically arranged above the hole frame 261, and the two ends of the downward pressure spring 265 are respectively fixed on the top surface of the hole frame 261 and the pressure frame 264. Pulling the pressure frame 264 vertically upward on the hole frame 261 compresses the downward pressure spring 265, deforming it and vertically placing the workpiece to be ground on the hole frame 261 of the clamping member 26 of the pressing member 2. Releasing the pressure frame 264, under the deformation force of the downward pressure spring 265, pushes the pressure frame 264 to press the workpiece in the hole frame 261, ensuring the stability of the workpiece grinding.

[0030] Reference Figure 4 A screw 25 is horizontally arranged in the slide frame 21, and one end of the screw 25 is rotatably connected to the end face of the slide frame 21. Rotating the screw 25 on the slide frame 21 is used to push the clamping member 26 to clamp the workpiece on the abrasive belt 18 for grinding. A screw hole 263 is horizontally opened through the middle of the slider 24, and the screw hole 263 is threadedly connected to the screw 25. Rotating the screw 25 on the slide frame 21 drives the slider 24 to move horizontally in the moving frame 23, causing the clamped workpiece to contact the abrasive belt 18 for grinding.

[0031] Reference Figure 4 and Figure 5 Both sides of the movable frame 23 are vertically fixed with sliders 24, and the sliders 24 are vertically slidably assembled in the slide frame 21. During use, the sliders 24 on the movable frame 23 move vertically in the slide frame 21 to vertically adjust the grinding position of the workpiece. A hydraulic rod 22 is vertically fixed on the bottom surface of the slide frame 21, and the output end of the hydraulic rod 22 is fixed to the bottom surface of the movable frame 23. Activating the extension and retraction of the hydraulic rod 22 drives the movable frame 23 to move vertically in the slide frame 21, facilitating vertical adjustment of the grinding position of the workpiece.

[0032] Reference Figure 3 A slide 14 is horizontally fixed on the side of the frame 11 away from the pressing member 2. A movable rotating plate 15 is horizontally movable on the slide 14. A drive roller 12 is vertically rotatably connected to the movable rotating plate 15, and the drive roller 12 is tensioned and pressed against the sanding belt 18. In use, the drive roller 12 on the movable rotating plate 15 is used to tension the sanding belt 18. A slide bar 16 is horizontally fixed on the movable rotating plate 15, and the slide bar 16 is horizontally slidably assembled in the slide 14. One end of the slide bar 16 is horizontally fixed with a tension spring 17, and the other end of the tension spring 17 is fixed to the frame 11. When tensioning the sanding belt 18, the slide bar 16 on the movable rotating plate 15 slides horizontally on the slide 14. Under the support of the deformation force of the tension spring 17, the slide bar 16 pushes the drive roller 12 on the movable rotating plate 15 to tension the sanding belt 18.

[0033] The implementation principle of a precision belt sander according to an embodiment of this application is as follows: During use, the pressure frame 264 is pulled and slides vertically upward on the hole frame 261, compressing the downward pressure spring 265 to deform, and the workpiece to be sanded is vertically placed on the hole frame 261 of the clamping member 26 of the pressing member 2. When the pressure frame 264 is released, under the deformation force of the downward pressure spring 265, the pressure frame 264 is pushed to press the workpiece in the hole frame 261. Then, the sliding clamping member 26 moves towards the sanding belt 18 of the belt sander body 1 in the moving frame 23, pushing the workpiece against the sanding belt 18 to perform sanding treatment on the workpiece. The drive motor 13 is started to drive the drive roller 12 to rotate, driving the sanding belt 18 to run and perform sanding treatment on the workpiece. Thus, it is not necessary for manual hand-holding to press the workpiece on the sanding belt 18. The workpiece is clamped by the pressing member 2 and pushed to press the workpiece on the sanding belt 18. The high-speed running sanding belt 18 sands the workpiece.

[0034] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A precision belt sander, characterized in that, The belt sander includes a belt sander body (1) and a pressing component (2). The belt sander body (1) includes a frame (11). A fixing screw (111) is vertically mounted through the bottom surface of the frame (11), and drive rollers (12) are symmetrically and vertically rotatably connected to the top surface of the frame (11). A drive motor (13) is vertically fixed on the frame (11), and the output end of the drive motor (13) is fixed on the rotating shaft of the drive roller (12). A sanding belt (18) is tensioned and connected to the drive roller (12) of the frame (11). The pressing component (2) includes a sliding frame (21), which is vertically fixed to one end face of the frame (11). Above, a movable frame (23) is horizontally arranged in the sliding frame (21). The movable frame (23) is vertically slidably assembled in the sliding frame (21). Slider (24) is vertically fixed on both sides of the movable frame (23). The slider (24) is vertically slidably assembled in the sliding frame (21). A clamping member (26) is vertically arranged in the movable frame (23). The clamping member (26) includes a hole frame (261). The hole frame (261) is vertically arranged above the movable frame (23). A movable block (262) is vertically fixed on the bottom surface of the hole frame (261). The movable block (262) is horizontally slidably assembled in the movable frame (23).

2. The precision belt sander according to claim 1, characterized in that: A pressure frame (264) is vertically slidably assembled on the top surface of the hole frame (261). A guide rod is vertically fixed on the top surface of the pressure frame (264), and the guide rod of the pressure frame (264) is vertically slidably inserted into the top surface of the hole frame (261). A downward pressure spring (265) is vertically arranged above the hole frame (261), and the two ends of the downward pressure spring (265) are respectively fixed on the top surface of the hole frame (261) and the pressure frame (264).

3. A precision belt sander according to claim 2, characterized in that: A screw (25) is horizontally arranged in the sliding frame (21), and one end of the screw (25) is rotatably connected to the end face of the sliding frame (21).

4. A precision belt sander according to claim 3, characterized in that: The slider (24) has a horizontal through-hole (263) in the middle, and the screw hole (263) is threaded through and connected to the screw (25).

5. A precision belt sander according to claim 4, characterized in that: A hydraulic rod (22) is vertically fixed on the bottom surface of the sliding frame (21), and the output end of the hydraulic rod (22) is fixed on the bottom surface of the moving frame (23).

6. A precision belt sander according to claim 5, characterized in that: A slide (14) is horizontally fixed on the side of the frame (11) away from the pressing member (2), and a movable rotating plate (15) is horizontally movable on the slide (14). A drive roller (12) is vertically rotatably connected to the movable rotating plate (15), and the drive roller (12) is tensioned and pressed against the sanding belt (18).

7. A precision belt sander according to claim 6, characterized in that: A slide bar (16) is horizontally fixed on the movable rotating plate (15), and the slide bar (16) is horizontally slidably assembled in the slide frame (14). One end of the slide bar (16) is horizontally fixed with a tension spring (17), and the other end of the tension spring (17) is fixed on the frame (11).

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