Sanding machine with efficient dust collection system
By designing a semi-enclosed cavity and sealing plate on the sander to construct a sealed dust collection channel, the problem of poor dust collection effect of the sander is solved, achieving efficient dust collection, improving the safety of the processing environment and the service life of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-13
- Publication Date
- 2026-04-14
AI Technical Summary
Existing sanders have poor dust collection performance, especially for fine dust, resulting in serious dust pollution that affects the health of operators and the precision of the equipment.
A sander with a high-efficiency dust collection system was designed. A semi-enclosed cavity and a sealing plate were used to construct a closed dust collection channel. The dust collection components were connected to the drive shaft of the sanding mechanism. The dust collection hood was designed at an angle to improve dust collection efficiency.
It significantly improves dust collection efficiency, reduces dust diffusion, lowers the risk of environmental pollution and equipment damage, and enhances the safety of the processing environment and the service life of equipment.
Smart Images
Figure CN224115870U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of machining equipment technology, and in particular to a sander with a high-efficiency dust collection system. Background Technology
[0002] In modern industrial production, sanders are a common surface treatment equipment widely used in the grinding and polishing processes of materials such as wood, metal, and plastic. They play an important role in improving the surface quality of products and meeting the needs of subsequent processing or use.
[0003] In practical applications, sanders generate a large amount of dust during operation. This dust not only seriously pollutes the working environment and affects the health of operators, but long-term exposure may also cause occupational diseases such as pneumoconiosis. Moreover, the spread of dust can also damage the precision of equipment and electrical systems in the production workshop, increasing equipment maintenance costs and failure rates. To address the dust problem in sanding operations, most existing sanders are equipped with dust collection pipelines. These pipelines collect the dust generated during sanding through an external vacuum cleaner. However, existing dust collection pipelines suffer from unreasonable layouts and generally have low dust collection efficiency. This is mainly manifested in the fact that they can only collect some larger dust particles, and the collection effect on fine dust is poor. The dust collection duct has high resistance and uneven airflow distribution, which not only reduces dust collection efficiency but also increases energy consumption.
[0004] Therefore, there is an urgent need for a sander with a high-efficiency dust collection system to effectively solve the problems of poor dust collection effect in existing sanders. Utility Model Content
[0005] The purpose of this application is to provide a sander with a high-efficiency dust collection system to solve the problems of poor dust collection effect in existing sanders.
[0006] The embodiments of this application can be implemented through the following technical solutions:
[0007] A sander with a high-efficiency dust collection system includes a base and a first worktable disposed above the base, wherein a sanding mechanism is connected to the first worktable;
[0008] The top surface of the first workbench extends downward to form a semi-enclosed cavity for placing the grinding mechanism, and an opening for communicating with the dust collection assembly is provided at the bottom of the semi-enclosed cavity.
[0009] The back of the first workbench is provided with a sealing plate. The sealing plate surrounds the bottom surface of the semi-enclosed cavity around the periphery of the semi-enclosed cavity. The bottom of the sealing plate and the outer edge of the bottom of the semi-enclosed cavity together form a closed mating surface that wraps around the opening. The closed mating surface is connected to the inlet end of the dust collection assembly. The outlet end of the dust collection assembly extends outward to the outside of the base.
[0010] Furthermore, the dust collection assembly includes a chip discharge pipe and a dust collection hood that are connected through each other. The dust collection hood is a hood with an open top surface and a downwardly sloping bottom surface. The lowest point of the sloping bottom surface of the dust collection hood is connected through the chip discharge pipe, and the opening on the top surface of the dust collection hood is connected to the closed mating surface.
[0011] Furthermore, the dust collection assembly and the first workbench are detachably connected, the chip discharge pipe and the dust collection hood are an integral structure, and the top opening of the dust collection hood is detachably and sealed to the closed mating surface of the first workbench through a sealing gasket.
[0012] Furthermore, the dust collection assembly and the first worktable are provided with axial through holes for accommodating the drive shaft of the grinding mechanism, namely a first axial through hole and a second axial through hole. The second axial through hole on the dust collection assembly is located at the highest point of the bottom surface of the dust collection cover. The drive shaft of the grinding mechanism passes through the first axial through hole and the second axial through hole in sequence and is connected to the reciprocating lifting mechanism.
[0013] Furthermore, the grinding mechanism includes a large drum wheel, a small drum wheel, a sanding belt tensioning mechanism, a large drum wheel bracket, a drum wheel bracket cover, and a small drum wheel bracket. The large drum wheel is mounted on the lower side of one side of the drum wheel bracket cover via a mounting bracket of the large drum wheel bracket. The small drum wheel bracket is mounted on the lower side of the other side of the drum wheel bracket cover via a second frame. The distance between the large drum wheel and the small drum wheel is adjusted by the sanding belt tensioning mechanism.
[0014] Furthermore, a long shaft is connected to the center of the large drum, which passes through the first axial through hole and the second axial through hole in sequence, and is connected to the output end of the motor through a reciprocating lifting mechanism.
[0015] Furthermore, the reciprocating lifting mechanism includes a driving pulley, a driven pulley, a pulley bracket, a bearing cover plate, a tensioning pulley, a positioning plate, a long pulley, a first synchronous belt, and a second synchronous belt. The lower part of the long shaft is respectively mounted on the pulley bracket and the bearing cover plate via the first bearing and the second bearing. The driving pulley and the driven pulley are located between the first bearing and the second bearing. A bearing baffle is provided on one side of the bearing cover plate, and a spring is provided between the bearing cover plate with the bearing baffle and the driving pulley. A dustproof gasket is provided on the other side of the bearing cover plate. The contact surfaces of the driving pulley and the driven pulley are provided with corresponding concave and convex structures. The first synchronous belt is connected to the long shaft and the driving pulley, and the second synchronous belt is connected to the long shaft and the driven pulley. The positioning plate is fixed to the pulley bracket with screws.
[0016] Furthermore, the first workbench is fixed on the base and connected to the second workbench by rotating screws. Angle gauges are installed on both sides of the second workbench. The angle gauges are provided with arc groove structures. One end of the angle gauge on each side, which is provided with the first arc groove structure, is connected to one side of the base by a knob, and the other end is fixed to the second workbench by screws, so as to realize that the position angle of the second workbench relative to the first workbench is adjustable.
[0017] The sander with a high-efficiency dust collection system provided in the embodiments of this application has at least the following beneficial effects:
[0018] This application employs an ingenious design where the top surface of the first workbench is recessed to form a semi-enclosed cavity, precisely defining the sanding area and greatly reducing the space for dust diffusion. Furthermore, the bottom surface of the first workbench is equipped with a sealing plate, and the sealing plate and the outer edge of the cavity bottom surface form a closed mating surface that seamlessly connects to the dust collection component inlet, forming a nearly sealed dust collection channel. This effectively collects dust or wood chips, significantly improving dust collection efficiency and reducing the risk of dust pollution to the processing environment and internal components of the equipment from the source. It has advantages such as simple structure, high dust collection efficiency, and strong practicality. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of a sander with a high-efficiency dust collection system according to this application;
[0020] Figure 2 This is a schematic diagram showing the connection between the first workbench and the dust collection component in this application;
[0021] Figure 3 , Figure 4 These are schematic diagrams of the first workbench and the dust collection component from different perspectives in their disassembled state;
[0022] Figure 5 This is a schematic diagram of the overall structure of the grinding mechanism in this application;
[0023] Figure 6 This is a schematic diagram of the overall structure of the reciprocating lifting mechanism in this application.
[0024] Numbers in the diagram
[0025] 1. Base; 2. Workbench; 21. First workbench; 22. Second workbench; 23. Angle ruler; 24. Knob; 3. Safety switch device; 4. Sanding belt placement structure; 5. Grinding mechanism; 5. 50mm long shaft; 51. Large drum wheel; 52. Small drum wheel; 53. Sanding belt tensioning mechanism; 53. Sanding belt tensioning plate; 532. Sanding belt tensioning spring; 54. Large drum wheel bracket; 55. Drum wheel bracket cover; 55. First slide groove; 551. Small drum wheel bracket; 56. Second frame; 561. Second mounting plate; 562. Second slide groove; 563. Third slide groove; 564. Dust collection assembly; 6. Chip discharge pipe; 61. Dust collection cover; 62. 63. Sealing gasket; 7. Reciprocating lifting mechanism; 7. Driven pulley; 72. Driven pulley; 73. Pulley bracket; 74. Bearing cover plate; 75. Tensioning wheel; 76. Positioning plate; 77. Long pulley; 78. Spring. Detailed Implementation
[0026] The present application will now be further described based on preferred embodiments and with reference to the accompanying drawings.
[0027] Furthermore, for ease of understanding, various components on the drawings have been enlarged or reduced, but this is not intended to limit the scope of protection of this application.
[0028] Singular forms of words also include plural meanings, and vice versa.
[0029] In the description of the embodiments of this application, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, in the description of this application, in order to distinguish different units, the terms "first," "second," etc. are used in this specification, but these are not limited by the manufacturing order, nor should they be construed as indicating or implying relative importance. Their names may differ in the detailed description and claims of this application.
[0030] The vocabulary used in this specification is for illustrative purposes and is not intended to limit the scope of this application. It should also be noted that, unless otherwise expressly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection via an intermediate medium; or they can refer to the internal communication between two components. Those skilled in the art will understand the specific meaning of these terms in this application.
[0031] Figure 1 This is a schematic diagram of the overall structure of a sander with a high-efficiency dust collection system according to this application. Figure 1 As shown, a sander with a high-efficiency dust collection system includes a base 1 and a worktable 2 mounted on the base 1. A safety switch 3 is mounted on the base 1, and different types of sanding belt placement structures 4 are mounted on the side of the safety switch 3. The worktable 2 includes a first worktable 21 and a second worktable 22. The first worktable 21 is fixed to the base 1 with screws, and the second worktable 22 is connected to the first worktable 21 with rotating screws. Angle rulers 23 are mounted on both sides of the second worktable 22. The angle rulers 23 are provided with arc groove structures. One end of the angle ruler 23 with the first arc groove structure is connected to one side of the base 1 through a knob 24, and the other end is fixed to the second worktable 22 with screws, so that the position angle of the second worktable 22 relative to the first worktable 21 is adjustable.
[0032] In some preferred embodiments, a grinding mechanism 5 is provided on the first worktable 21, which is used to grind or process the workpiece.
[0033] Specifically, the top surface of the first worktable 21 extends downward to form a semi-enclosed cavity 211 for housing the grinding mechanism 5, such as... Figure 2 As shown, the semi-enclosed cavity 211 has an opening at the bottom that is connected to the dust collection assembly 6, so that the dust and debris from the grinding mechanism 5 can pass through the opening 2110 of the semi-enclosed cavity 211 into the dust collection assembly 6.
[0034] Furthermore, such as Figure 3As shown, a sealing plate 212 is provided on the back of the first workbench 21. The sealing plate 212 surrounds the bottom surface of the semi-enclosed cavity 211 around the circumference of the semi-enclosed cavity 211. The bottom of the sealing plate 212 and the outer edge of the bottom of the semi-enclosed cavity 211 together form a closed mating surface that wraps around the outside of the opening 2110. The closed mating surface is connected to the inlet end of the dust collection component 6. The outlet end of the dust collection component 6 extends outward to the outside of the base 1. The chip discharge pipe 61 can be connected to an external vacuum cleaner to collect and process the wood chips generated during the sanding process, preventing the wood chips from entering the sander and burning out the motor, thus affecting the operation of the sander.
[0035] In some preferred embodiments, such as Figure 3 , Figure 4 As shown, the dust collection assembly 6 includes a chip discharge pipe 61 and a dust collection hood 62 that are connected through each other. The dust collection hood 62 is a cover with an open top surface and a downward-sloping bottom surface. The top opening of the dust collection hood 62 is connected to the closed mating surface. The lowest point of the sloping bottom surface of the dust collection hood 62 is connected through the chip discharge pipe 61. The top opening of the dust collection hood 62 is designed to wrap around the outside of the semi-closed cavity 211, which can effectively collect the dust or waste falling into the semi-closed cavity 211 into the dust collection hood 62. The bottom surface of the dust collection hood 62 is designed to slope downwards, which helps the dust or waste to slide naturally to the lowest point of the sloping bottom surface under the action of gravity until it is discharged through the chip discharge pipe 61, thereby improving the dust collection efficiency.
[0036] In some preferred embodiments, the dust collection assembly 6 and the first workbench 21 are detachably connected, the chip discharge pipe 61 and the dust collection hood 62 are an integral structure, and the top opening of the dust collection hood 62 is detachably sealed to the closed mating surface of the first workbench 21 through a sealing gasket 63, which is used to enhance the sealing of the connection and prevent dust or waste from leaking from the interface.
[0037] In some preferred embodiments, the dust collection assembly 6 and the first worktable 21 are provided with axial through holes for accommodating the drive shaft of the grinding mechanism 5, namely a first axial through hole 210 and a second axial through hole 60. The second axial through hole 60 on the dust collection assembly 6 is located at the highest point of the bottom surface of the dust collection cover 62. The drive shaft of the grinding mechanism 5 passes through the first axial through hole 210 and the second axial through hole 60 in sequence and is connected to the reciprocating lifting mechanism 7. The reciprocating lifting mechanism 7 is disposed in the base 1. The reciprocating lifting mechanism 7 is used to transmit rotational and reciprocating or oscillating motion to the drive shaft of the grinding mechanism 5, so that the workpiece can be subjected to both radial grinding and axial grinding.
[0038] The grinding mechanism 5 includes a large drum 51, a small drum 52, a sanding belt tensioning mechanism 53, a large drum bracket 54, a drum bracket cover 55, and a small drum bracket 56. The large drum 51 is mounted on the lower side of one side of the drum bracket cover 55 via the mounting bracket of the large drum bracket 54. The small drum bracket 56 is mounted on the lower side of the other side of the drum bracket cover 55 via a second frame 561. The distance between the large drum 51 and the small drum 52 is adjusted by the sanding belt tensioning mechanism 53, thereby achieving tensioning of the sanding belt sleeved on the outside of the two drums.
[0039] Specifically, the drum support cover 55 has a first groove 551 arranged along its length in the middle. The sanding belt tensioning mechanism 53 includes a sanding belt tensioning plate 531 and a sanding belt tensioning spring 532. One side of the sanding belt tensioning plate 531 is hinged to the mounting plate of the large drum support 54 by a screw, and the screw is located in the second groove 563 opened in the middle of the second mounting plate 562 of the small drum support 56. The other side of the sanding belt tensioning plate 531 is located in the first groove 551 of the drum support cover 55. One side of the sanding belt tensioning spring 532 is connected to the end of the sanding belt tensioning plate 531 away from the first groove 551. The other side of the sanding belt tensioning spring 532 is connected to the third groove 564 opened on the second mounting plate 562 by a screw. The third groove 564 is farther away from the small drum 52 than the second groove 563.
[0040] In some preferred embodiments, a long shaft 50 is connected to the axis of the large drum 51, and the long shaft 50 serves as the drive shaft of the large drum 51 and is connected to the output end of the motor through a reciprocating lifting mechanism 7.
[0041] Specifically, the reciprocating lifting mechanism 7 includes a driving pulley 71, a driven pulley 72, a pulley bracket 73, a bearing cover plate 74, a tensioning pulley 75, a positioning plate 76, a long pulley 77, a first synchronous belt, and a second synchronous belt. The lower part of the long shaft 50 is respectively mounted on the pulley bracket 73 and the bearing cover plate 74 via the first bearing and the second bearing. The driving pulley 71 and the driven pulley 72 are located between the first bearing and the second bearing. A bearing baffle is provided on one side of the bearing cover plate 74. A spring 78 is provided between the bearing cover plate 74 with the bearing baffle and the driving pulley 71. A dustproof gasket is provided on the other side of the bearing cover plate 74. The contact surfaces of the driving pulley 71 and the driven pulley 72 are provided with corresponding concave and convex structures. A synchronous belt connects the long shaft 50 and the driving pulley 71, and a second synchronous belt connects the long shaft 50 and the driven pulley 72. The positioning plate 76 is fixed to the pulley bracket 73 by screws. When the grinding machine is working, the long pulley 77 drives the driving pulley 71 and the driven pulley 72 to rotate. During the rotation, the concave and convex structures of the driving pulley 71 and the driven pulley 72 cooperate with each other to complete the up-and-down reciprocating motion. The workpiece is subjected to radial grinding and axial grinding at the same time. Under the double grinding, the working efficiency and grinding quality are improved. The spring 78, which is set between the bearing cover plate 74 and the driving pulley 71 on one side, promotes and restores the reciprocating lifting motion, thereby improving the working efficiency.
[0042] The specific structure of the reciprocating lifting mechanism 7 is existing technology in this field and will not be described in further detail here.
[0043] The specific embodiments of this application have been described in detail above. For those skilled in the art, several improvements and modifications can be made to this application without departing from the principle of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.
Claims
1. A sander with a high-efficiency dust collection system, comprising a base (1) and a first worktable (21) disposed above the base (1), wherein a sanding mechanism (5) is connected to the first worktable (21), characterized in that: The top surface of the first workbench (21) extends downward to form a semi-closed cavity (211) for placing the grinding mechanism (5), and a through opening (2110) for communicating with the dust collection assembly (6) is provided below the semi-closed cavity (211). The back of the first workbench (21) is provided with a sealing plate (212). The sealing plate (212) surrounds the bottom surface of the semi-enclosed cavity (211) along the circumference of the semi-enclosed cavity (211). The bottom of the sealing plate (212) and the outer edge of the bottom of the semi-enclosed cavity (211) together form a closed mating surface that wraps around the outside of the opening (2110). The closed mating surface is connected to the inlet end of the dust collection assembly (6). The outlet end of the dust collection assembly (6) extends outward to the outside of the base (1).
2. The sander with a high-efficiency dust collection system according to claim 1, characterized in that: The dust collection assembly (6) includes a chip discharge pipe (61) and a dust collection hood (62) that are connected through each other. The dust collection hood (62) is a hood with an open top surface and a downward-sloping bottom surface. The lowest point of the sloping bottom surface of the dust collection hood (62) is connected through the chip discharge pipe (61), and the opening on the top surface of the dust collection hood (62) is connected to the closed mating surface.
3. The sander with a high-efficiency dust collection system according to claim 2, characterized in that: The dust collection assembly (6) and the first workbench (21) are detachably connected. The chip discharge pipe (61) and the dust collection hood (62) are an integral structure. The top opening of the dust collection hood (62) is detachably and sealed to the closed mating surface of the first workbench (21) through a sealing gasket (63).
4. The sander with a high-efficiency dust collection system according to claim 2, characterized in that: The dust collection assembly (6) and the first worktable (21) are provided with axial through holes for accommodating the drive shaft of the grinding mechanism (5), namely a first axial through hole (210) and a second axial through hole (60). The second axial through hole (60) on the dust collection assembly (6) is located at the highest point of the bottom surface of the dust collection cover (62). The drive shaft of the grinding mechanism (5) passes through the first axial through hole (210) and the second axial through hole (60) in sequence and is connected to the reciprocating lifting mechanism (7).
5. The sander with a high-efficiency dust collection system according to claim 4, characterized in that: The grinding mechanism (5) includes a large drum wheel (51), a small drum wheel (52), a sanding belt tensioning mechanism (53), a large drum wheel bracket (54), a drum wheel bracket cover (55), and a small drum wheel bracket (56). The large drum wheel (51) is mounted on the lower side of the drum wheel bracket cover (55) via the mounting bracket of the large drum wheel bracket (54). The small drum wheel bracket (56) is mounted on the lower side of the drum wheel bracket cover (55) via a second frame (561). The distance between the large drum wheel (51) and the small drum wheel (52) is adjusted by the sanding belt tensioning mechanism (53).
6. The sander with a high-efficiency dust collection system according to claim 5, characterized in that: The large drum (51) is connected to a long shaft (50) at its center. The long shaft (50) passes through the first axial through hole (210) and the second axial through hole (60) in sequence, and is connected to the output end of the motor through the reciprocating lifting mechanism (7).
7. The sander with a high-efficiency dust collection system according to claim 6, characterized in that: The reciprocating lifting mechanism (7) includes a driving pulley (71), a driven pulley (72), a pulley bracket (73), a bearing cover plate (74), a tensioning pulley (75), a positioning plate (76), a long pulley (77), a first synchronous belt, and a second synchronous belt. The lower part of the long shaft (50) is respectively mounted on the pulley bracket (73) and the bearing cover plate (74) via a first bearing and a second bearing. The driving pulley (71) and the driven pulley (72) are located between the first bearing and the second bearing. A shaft is provided on one side of the bearing cover plate (74). A bearing cover plate (74) with a bearing baffle is provided on one side and a spring (78) is provided between the bearing cover plate (74) and the drive pulley (71). A dustproof gasket is provided on the other side of the bearing cover plate (74). The contact surfaces of the drive pulley (71) and the driven pulley (72) are provided with corresponding concave and convex structures. The first synchronous belt is connected to the long shaft (50) and the drive pulley (71). The second synchronous belt is connected to the long shaft (50) and the driven pulley (72). The positioning plate (76) is fixed to the pulley bracket (73) by screws.
8. The sander with a high-efficiency dust collection system according to claim 1, characterized in that: The first workbench (21) is fixed on the base (1). The first workbench (21) is connected to the second workbench (22) by rotating screws. Angle rulers (23) are installed on both sides of the second workbench (22). The angle rulers (23) are provided with arc groove structures. One end of the angle ruler (23) on each side is provided with the first arc groove structure and is connected to one side of the base (1) by a knob (24). The other end is fixed to the second workbench (22) by screws, so that the position angle of the second workbench (22) relative to the first workbench (21) can be adjusted.