Abrasive belt sander

Abstract

The utility model relates to abrasive belt grinding machine relates to the technical field of abrasive belt grinding equipment, it includes workbench, the workbench is provided with the grinding seat and goes up and down, the end wall of grinding seat is provided with the grinding wheel and rotates, the top of grinding seat is provided with the gear box, the input shaft of gear box connects motor, the output shaft of gear box connects drive wheel, and the abrasive belt is collectively tensioned and is equipped with in drive wheel and grinding wheel, gear box bottom end fixedly set up have upper connecting plate, the top of grinding seat is fixedly set up and has lower connecting plate, and the horizontal setting of upper connecting plate and lower connecting plate between has the rotating shaft, the first threaded section and the second threaded section of opposite direction of rotation are provided with in the rotating shaft symmetry, the sliding block is provided with in the rotating shaft symmetry, the hinged setting of sliding block and upper connecting plate between has upper support rod, the hinged setting of sliding block and lower connecting plate between has lower support rod. The application has the effect that the abrasive belt on the grinding machine is replaced conveniently, satisfies different use demand.

Description

Technical Field

[0001] This utility model relates to the technical field of belt grinding equipment, and in particular to belt grinding machines. Background Technology

[0002] In the processing of stainless steel strips, removing the surface oxide scale is a crucial step in ensuring product quality, and most related technologies employ belt abrasive grinding machines for polishing and grinding. However, traditional belt abrasive grinding machines typically use fixed-length abrasive belts, making belt replacement inconvenient once the belts wear out. Utility Model Content

[0003] To facilitate the replacement of the abrasive belt on the grinding machine and meet different usage needs, this application provides a belt grinding machine.

[0004] The belt abrasive mill provided in this application adopts the following technical solution: A belt abrasive grinder includes a worktable with a grinding seat that is raised and lowered on the worktable. A grinding wheel is rotatably mounted on the end wall of the grinding seat. A gearbox is located above the grinding seat. The input shaft of the gearbox is connected to a motor, and the output shaft of the gearbox is connected to a drive wheel. An abrasive belt is tensioned and fitted onto both the drive wheel and the grinding wheel. An upper connecting plate is fixedly mounted at the bottom of the gearbox, and a lower connecting plate is fixedly mounted at the top of the grinding seat. A rotating shaft is horizontally mounted between the upper and lower connecting plates. A first threaded segment and a second threaded segment with opposite directions of rotation are symmetrically mounted on the rotating shaft. Slider blocks are symmetrically slidably mounted on the rotating shaft. One slider is threadedly connected to the first threaded segment, and the other slider is threadedly connected to the second threaded segment. An upper support rod is hinged between the slider and the upper connecting plate, and a lower support rod is hinged between the slider and the lower connecting plate.

[0005] By adopting the above technical solution, when processing and grinding stainless steel strips, the stainless steel strip is placed on a worktable. A motor and gearbox drive the drive wheel to rotate, which in turn drives the grinding wheel to rotate via the abrasive belt. The grinding seat rises and falls on the worktable, allowing the abrasive belt on the grinding wheel to contact the surface of the stainless steel strip. The continuously rotating abrasive belt grinds the surface of the stainless steel strip. When the abrasive belt needs to be replaced, the rotating shaft is rotated. Due to the simultaneous limitation of the upper and lower support rods, the sliders can be driven to move in opposite directions on the rotating shaft simultaneously. As the sliders slide, the tilt angles of the upper and lower support rods continuously change. As the upper and lower support rods become increasingly horizontal, the grinding wheel and drive wheel move closer together, at which point the abrasive belt becomes loose, allowing for its removal and replacement. After replacement, the rotating shaft is rotated in the opposite direction, causing the gearbox and grinding seat to move further apart, thereby controlling the tension of the abrasive belt on the grinding wheel and drive wheel. This application allows for the mutual approach or separation of the gearbox and grinding seat, adjusting the tension of the abrasive belt and facilitating its replacement to meet different usage requirements.

[0006] Preferably, a set of positioning blocks are symmetrically arranged on the side wall of the grinding seat, and a guide rod is fixedly arranged on the positioning block along the vertical direction. A guide block is fixedly arranged on the side wall of the gearbox, and the guide block is slidably arranged on the guide rod. An abutment spring is sleeved on the guide rod, one end of the abutment spring abuts against the upper surface of the positioning block, and the other end of the abutment spring abuts against the lower surface of the guide block.

[0007] By adopting the above technical solution, when the rotating shaft drives the gearbox and the grinding seat to move closer or further apart, the guide block slides on the guide rod. The guide block can guide the gearbox and improve the stability of the gearbox and the grinding seat during sliding. The two ends of the abutting spring continuously abut against the positioning block and the guide block. When the motor drives the drive wheel to rotate, it can improve the stability of the connection between the gearbox and the grinding seat during operation.

[0008] Preferably, the end wall of the rotating shaft is provided with a telescopic groove, and a telescopic rod is slidably disposed in the telescopic groove. A handle is hinged to the end wall of the telescopic rod, and the handle can be inserted into the telescopic groove. A limit block is integrally provided on the side wall of the telescopic rod, and a limit groove is provided on the inner side wall of the telescopic groove. The limit block is slidably disposed in the limit groove.

[0009] Preferably, the surface of the grip has a notch.

[0010] By adopting the above technical solution, when the rotating shaft needs to be rotated, the handle is pulled at the notch, causing the telescopic rod to slide within the telescopic groove. The handle is then completely slid out of the telescopic groove, and then the handle is rotated so that its length direction is perpendicular to the length direction of the telescopic rod. At this point, by holding the handle and rotating the telescopic rod, the limiting block is driven to abut against the inner wall of the limiting groove, thereby driving the rotating shaft to rotate, achieving a labor-saving effect. When the handle is not needed, it can be rotated to be flush with the telescopic rod and inserted into the telescopic groove, effectively reducing the space occupied by the device.

[0011] Preferably, a plurality of connecting screws are symmetrically fixed on the opposite surfaces of the grinding base and the gearbox. The upper connecting plate and the lower connecting plate are provided with connecting holes for the connecting screws to pass through. The connecting holes and the connecting screws are mutually adapted to each other. A connecting nut is threaded onto the connecting screw.

[0012] Preferably, the end wall of the connecting screw is provided with a guide surface at an angle.

[0013] By adopting the above technical solution, the gearbox can be disassembled from the upper connecting plate or the grinding seat can be disassembled from the lower connecting plate by using the connecting screw and the connecting nut, which facilitates the maintenance and assembly of the grinding machine.

[0014] Preferably, both the grinding wheel and the drive wheel have stop grooves on their end walls for inserting the sanding belt, and the stop grooves are compatible with the sanding belt.

[0015] Preferably, the bottom wall of the stop groove is integrally provided with raised texture.

[0016] By adopting the above technical solution, when the grinding wheel and the drive wheel rotate, the stop groove can limit the sanding belt to a certain extent, reduce the situation where the sanding belt separates from the grinding wheel or the drive wheel, and improve the stability of the sanding belt during operation; while the convex pattern increases the friction between the sanding belt and the grinding wheel and the drive wheel, making it easier to drive the sanding belt to rotate continuously.

[0017] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting up a worktable, grinding seat, grinding wheel, gearbox, motor, drive wheel, sanding belt, upper connecting plate, lower connecting plate, rotating shaft, first threaded section, second threaded section, slider, upper support rod and lower support rod, rotating the rotating shaft can drive two sliders to move in opposite directions on the rotating shaft at the same time. When the sliders slide, the tilt angle of the upper support rod and the lower support rod changes continuously, and the grinding wheel and drive wheel move closer and closer, so that the sanding belt can be disassembled and replaced. This application can realize the mutual approach or distance sliding between the gearbox and the grinding seat, adjust the tightness of the sanding belt, and facilitate the replacement of the sanding belt to meet different usage requirements; 2. By setting up a positioning block, a guide rod, a guide block, and a contact spring, when the rotating shaft drives the gearbox and the grinding seat to move closer or further apart, the guide block slides on the guide rod. The guide block can guide the gearbox and improve the stability of the gearbox and the grinding seat during sliding. The two ends of the contact spring continuously abut against the positioning block and the guide block. When the motor drives the drive wheel to rotate, it can improve the stability of the connection between the gearbox and the grinding seat during operation. 3. By setting up a telescopic groove, telescopic rod, handle, limiting block, limiting groove, and notch, when the rotating shaft needs to be rotated, the handle is pulled at the notch, causing the telescopic rod to slide within the telescopic groove. The handle is then completely slid out of the telescopic groove. Then, the handle is rotated so that its length direction is perpendicular to the length direction of the telescopic rod. At this point, the handle is held and the telescopic rod is rotated, causing the limiting block to abut against the inner wall of the limiting groove, thereby driving the rotating shaft to rotate, achieving a labor-saving effect. When the handle is not needed, it can be rotated and inserted into the telescopic groove, effectively reducing the space occupied by the device. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the belt abrasive mill disclosed in the embodiments of this application.

[0019] Figure 2 This is a sports-related device used to illustrate the connection relationship between the upper connecting plate and the lower connecting plate in the embodiments of this application.

[0020] Explanation of reference numerals in the attached drawings: 1. Worktable; 2. Grinding seat; 21. Grinding wheel; 22. Upper connecting plate; 3. Gearbox; 31. Motor; 32. Drive wheel; 33. Lower connecting plate; 4. Sanding belt; 5. Rotating shaft; 51. First threaded section; 52. Second threaded section; 53. Slider; 531. Upper support rod; 532. Lower support rod; 6. Positioning block; 61. Guide rod; 62. Guide block; 63. Abutment spring; 7. Telescopic groove; 71. Telescopic rod; 711. Limiting block; 712. Limiting groove; 72. Handle; 721. Notch; 8. Connecting screw; 81. Connecting hole; 82. Connecting nut; 83. Guide surface; 9. Stop groove. Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0022] This application discloses a belt abrasive mill. (Refer to...) Figure 1The system includes a horizontally positioned worktable 1, on which a grinding seat 2 is mounted via a sliding rail. A grinding wheel 21 is rotatably mounted on the end wall of the grinding seat 2. A gearbox 3 is connected above the grinding seat 2. The input shaft of the gearbox 3 is connected to a motor 31, and the output shaft of the gearbox 3 is connected to a drive wheel 32. An abrasive belt 4 is tensioned and fitted onto both the drive wheel 32 and the grinding wheel 21. When grinding stainless steel strips, the stainless steel strip is placed on the worktable 1. The motor 31 and gearbox 3 drive the drive wheel 32 to rotate, which in turn drives the grinding wheel 21 to rotate via the abrasive belt 4. The grinding seat 2 moves up and down on the worktable 1, causing the abrasive belt 4 on the grinding wheel 21 to contact the surface of the stainless steel strip. The continuously rotating abrasive belt 4 grinds the surface of the stainless steel strip.

[0023] Reference Figure 1 Both the grinding wheel 21 and the drive wheel 32 have stop grooves 9 on their end walls for inserting the sanding belt 4. The stop grooves 9 are arranged in a ring shape and are adapted to each other with the sanding belt 4. When the grinding wheel 21 and the drive wheel 32 rotate, the stop grooves 9 can limit the sanding belt 4 to a certain extent, reducing the possibility of the sanding belt 4 disengaging from the grinding wheel 21 or the drive wheel 32, and improving the stability of the sanding belt 4 during operation. The bottom wall of the stop groove 9 is integrally provided with raised textures (not shown in the figure). The raised textures increase the friction between the sanding belt 4 and the grinding wheel 21 and the drive wheel 32, making it easier to drive the sanding belt 4 to rotate continuously.

[0024] Reference Figure 1 and Figure 2 A top connecting plate 22 is fixedly installed at the bottom of the gearbox 3, and a bottom connecting plate 33 is fixedly installed at the top of the grinding seat 2. A rotating shaft 5 is horizontally arranged between the top connecting plate 22 and the bottom connecting plate 33. A first threaded section 51 and a second threaded section 52 with opposite screwing directions are symmetrically arranged on the rotating shaft 5. The first threaded section 51 and the second threaded section 52 are integrally formed with the rotating shaft 5. Sliding blocks 53 are symmetrically slidably arranged on the rotating shaft 5. One sliding block 53 is threadedly connected to the first threaded section 51, and the other sliding block 53 is threadedly connected to the second threaded section 52. An upper support rod 531 is hinged between the sliding block 53 and the top connecting plate 22, and a lower support rod 532 is hinged between the sliding block 53 and the bottom connecting plate 33. Rotating the rotating shaft 5 causes the slider 53 to be simultaneously limited by the upper support rod 531 and the lower support rod 532, which in turn drives the two sliders 53 to move in opposite directions on the rotating shaft 5. As the slider 53 slides, the tilt angle of the upper support rod 531 and the lower support rod 532 changes continuously. As the upper support rod 531 and the lower support rod 532 become more and more horizontal, the grinding wheel 21 and the drive wheel 32 move closer and closer. At this time, the sanding belt 4 becomes loose, and the sanding belt 4 can be disassembled and replaced.

[0025] Reference Figure 1A set of positioning blocks 6 are symmetrically welded and fixed to the side wall of the grinding seat 2. A guide rod 61 is fixedly mounted on the positioning block 6 along the vertical direction. A guide block 62 is welded and fixed to the side wall of the gearbox 3. The guide block 62 is slidably mounted on the guide rod 61. An abutment spring 63 is sleeved on the guide rod 61. One end of the abutment spring 63 abuts against the upper surface of the positioning block 6, and the other end of the abutment spring 63 abuts against the lower surface of the guide block 62. When the rotating shaft 5 drives the gearbox 3 and the grinding seat 2 to move closer or further apart, the guide block 62 slides on the guide rod 61. The guide block 62 can guide the gearbox 3 and improve the stability of the sliding between the gearbox 3 and the grinding seat 2. The two ends of the abutment spring 63 continuously abut against the positioning block 6 and the guide block 62. When the motor 31 drives the drive wheel 32 to rotate, it can improve the stability of the connection between the gearbox 3 and the grinding seat 2 during operation.

[0026] Reference Figure 1 and Figure 2 The end wall of the rotating shaft 5 is provided with a telescopic groove 7, the length of which is along the length of the rotating shaft 5. A telescopic rod 71 is slidably disposed within the telescopic groove 7, and the telescopic rod 71 is adapted to the telescopic groove 7. A handle 72 is hinged to the end wall of the telescopic rod 71, and the handle 72 can be inserted into the telescopic groove 7. A notch 721 is provided on the surface of the handle 72 located in the telescopic groove 7. A limiting block 711 is integrally provided on the side wall of the telescopic rod 71, and a limiting groove 712 is provided on the inner side wall of the telescopic groove 7. The limiting block 711 is slidably disposed within the limiting groove 712. When the rotating shaft 5 needs to be rotated, pull the handle 72 at the notch 721 to move the telescopic rod 71 into the telescopic groove 7. Slide the handle 72 completely out of the telescopic groove 7, and then rotate the handle 72 so that the length direction of the handle 72 is perpendicular to the length direction of the telescopic rod 71. At this time, hold the handle 72 and rotate the telescopic rod 71 to drive the limiting block 711 to abut against the inner wall of the limiting groove 712, which can then drive the rotating shaft 5 to rotate, achieving the effect of saving effort. When the handle 72 is not needed, it can be rotated to be flush with the telescopic rod 71 and inserted into the telescopic groove 7, which can effectively reduce the space occupied by the device.

[0027] Reference Figure 1 and Figure 2Several connecting screws 8 are symmetrically fixed on the opposite surfaces of the grinding base 2 and the gearbox 3. The connecting screws 8 are arranged along the direction of gravity, and the end walls of the connecting screws 8 are inclined with guide surfaces 83. The upper connecting plate 22 and the lower connecting plate 33 have connecting holes 81 for the connecting screws 8 to pass through. The connecting holes 81 and the connecting screws 8 are mutually adapted. Connecting nuts 82 are threaded onto the connecting screws 8. The connecting nuts 82 above the rotating shaft 5 abut against the upper connecting plate 22, and the connecting nuts 82 below the rotating shaft 5 abut against the lower connecting plate 33. By using the cooperation of the connecting screws 8 and the connecting nuts 82, the gearbox 3 can be disassembled from the upper connecting plate 22, or the grinding base 2 can be disassembled from the lower connecting plate 33, which facilitates the maintenance and assembly of the grinding machine.

[0028] The implementation principle of the belt sander disclosed in this application is as follows: When the sanding belt 4 needs to be replaced, the rotating shaft 5 is rotated. Since the slider 53 is simultaneously limited by the upper support rod 531 and the lower support rod 532, the two sliders 53 can be driven to move in opposite directions on the rotating shaft 5 at the same time. When the slider 53 slides, the tilt angle of the upper support rod 531 and the lower support rod 532 changes continuously. As the upper support rod 531 and the lower support rod 532 become more and more horizontal, the grinding wheel 21 and the drive wheel 32 move closer and closer. At this time, the sanding belt 4 will become loose, and then the sanding belt 4 can be disassembled and replaced. After replacement, the rotating shaft 5 is rotated in the opposite direction, which drives the gearbox 3 and the grinding seat 2 to move further away, thereby controlling the tension of the sanding belt 4 on the grinding wheel 21 and the drive wheel 32. This application can realize the mutual approach or mutual distance sliding between the gearbox 3 and the grinding seat 2 to adjust the tightness of the sanding belt 4, thereby facilitating the replacement of the sanding belt 4 to meet different usage needs.

[0029] 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 belt abrasive grinder, comprising a worktable (1), characterized in that: A grinding seat (2) is raised and lowered on the workbench (1). A grinding wheel (21) is rotatably mounted on the end wall of the grinding seat (2). A gearbox (3) is mounted above the grinding seat (2). The input shaft of the gearbox (3) is connected to a motor (31), and the output shaft of the gearbox (3) is connected to a drive wheel (32). An abrasive belt (4) is tensioned and fitted on both the drive wheel (32) and the grinding wheel (21). An upper connecting plate (22) is fixedly mounted at the bottom of the gearbox (3), and a lower connecting plate (33) is fixedly mounted at the top of the grinding seat (2). The upper connecting plate (22) and the lower connecting plate (33) are connected to each other. A rotating shaft (5) is horizontally arranged between the connecting plates (33); a first threaded section (51) and a second threaded section (52) with opposite screwing directions are symmetrically arranged on the rotating shaft (5); a slider (53) is symmetrically slidably arranged on the rotating shaft (5), wherein one slider (53) is threadedly connected to the first threaded section (51), and the other slider (53) is threadedly connected to the second threaded section (52); an upper support rod (531) is hinged between the slider (53) and the upper connecting plate (22), and a lower support rod (532) is hinged between the slider (53) and the lower connecting plate (33).

2. The belt abrasive mill according to claim 1, characterized in that: A set of positioning blocks (6) are symmetrically arranged on the side wall of the grinding seat (2). A guide rod (61) is fixedly arranged on the positioning block (6) along the vertical direction. A guide block (62) is fixedly arranged on the side wall of the gearbox (3). The guide block (62) is slidably arranged on the guide rod (61). An abutment spring (63) is sleeved on the guide rod (61). One end of the abutment spring (63) abuts against the upper surface of the positioning block (6), and the other end of the abutment spring (63) abuts against the lower surface of the guide block (62).

3. The belt abrasive mill according to claim 1, characterized in that: The end wall of the rotating shaft (5) is provided with a telescopic groove (7), and a telescopic rod (71) is slidably arranged in the telescopic groove (7). A handle (72) is hinged to the end wall of the telescopic rod (71), and the handle (72) can be inserted into the telescopic groove (7). A limit block (711) is integrally provided on the side wall of the telescopic rod (71), and a limit groove (712) is provided on the inner side wall of the telescopic groove (7). The limit block (711) is slidably arranged in the limit groove (712).

4. The belt abrasive mill according to claim 3, characterized in that: The surface of the grip (72) has a notch (721).

5. The belt abrasive mill according to claim 1, characterized in that: A plurality of connecting screws (8) are symmetrically fixed on the opposite surfaces of the grinding seat (2) and the gearbox (3). The upper connecting plate (22) and the lower connecting plate (33) are provided with connecting holes (81) through which the connecting screws (8) pass. The connecting holes (81) and the connecting screws (8) are mutually adapted to each other. The connecting screws (8) are threaded with connecting nuts (82).

6. The belt abrasive mill according to claim 5, characterized in that: The end wall of the connecting screw (8) is inclined and has a guide surface (83).

7. The belt abrasive mill according to claim 1, characterized in that: Both the grinding wheel (21) and the drive wheel (32) have stop grooves (9) for inserting the sanding belt (4) on their end walls, and the stop grooves (9) and the sanding belt (4) are mutually compatible.

8. The belt abrasive mill according to claim 7, characterized in that: The bottom wall of the stop groove (9) is integrally provided with raised texture.

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