Sander with automatic dust extraction

Abstract

The utility model discloses a sanding machine with automatic dust collection device, and the existing sanding machine produces a large amount of dust in the operation process, leads to air pollution, health hidden danger, inoperable and low dust collection efficiency etc. The utility model discloses a technical scheme: the motor of host computer is connected with the polishing disc through eccentric connecting block, and the host computer is provided with sealing ring, and the upper end surface of polishing disc is sealed with the host computer by sealing ring and forms first cavity, and first cavity is connected with connecting piece through air duct, and connecting piece is connected with dust collection bin, and the lower end surface of polishing disc is connected with polishing piece, and the whole of polishing disc and polishing piece is equipped with through -hole no. Dust in first cavity is sucked to dust collection bin and is filtered by filter cartridge and is left in dust collection bin. The utility model realizes efficient automatic dust collection and filtration, improves operation safety and work efficiency, and is convenient for maintenance.

Description

Technical Field

[0001] This utility model relates to a sanding machine, and more particularly to a sanding machine with an automatic dust collection device. Background Technology

[0002] Sanding machines are widely used in wood processing, furniture manufacturing, and metal surface treatment. They are primarily used to grind and polish workpiece surfaces to remove burrs, rust, or uneven areas, achieving a smooth and uniform surface. Traditional sanding machines typically consist of a main unit, a motor, and a polishing disc. The motor drives the polishing disc to rotate at high speed, contacting the workpiece surface with the attached polishing pads or sandpaper. However, in existing technology, the sanding process often generates a large amount of dust and debris. This dust not only disperses in the working environment, causing air pollution and health hazards for operators, but may also adhere to the workpiece surface, affecting sanding quality and subsequent processing efficiency. To address the dust problem, some sanding machines are equipped with simple dust collection devices, such as external dust hoods or manual cleaning structures. However, these devices often suffer from complex structures, low dust collection efficiency, and the inability to automatically collect dust in real time, leading to inconvenient operation, frequent maintenance, and difficulty in meeting the actual needs of industrial production in terms of sealing and filtration. In addition, existing dust collection systems are often separate from the sanding machine and are not tightly connected, which can easily lead to dust leakage or an increase in the overall size of the equipment, making them unsuitable for the application of portable or compact sanders. Utility Model Content

[0003] A sander with an automatic dust collection device includes a main motor connected to a polishing disc via an eccentric connecting block. The main unit is equipped with a sealing ring, which seals the upper surface of the polishing disc and the main unit to form a first cavity. The first cavity is connected to a connecting piece via an air duct, and the connecting piece is connected to a dust collection chamber. The lower surface of the polishing disc is connected to a polishing pad. The entire assembly consisting of the polishing disc and the polishing pad has a through hole that communicates with the first cavity. The first cavity communicates with the dust collection chamber, which contains a filter cartridge. The tail cap at the rear of the dust collection chamber has an air duct hole that can be connected to an external ventilation system. Dust in the first cavity is drawn into the dust collection chamber, filtered by the filter cartridge, and then retained in the dust collection chamber. This invention provides a highly efficient automatic dust collection and filtration sander by setting a sealing ring between the main unit of the sander and the polishing disc to form a first cavity, and connecting it to a dust collection chamber through an air duct. The dust collection chamber is equipped with a filter cartridge and can be connected to an external exhaust device. This solves the problems of air pollution, health hazards, inconvenient operation, and low dust collection efficiency caused by the large amount of dust generated during the operation of traditional sanders.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A sander with an automatic dust collection device includes a main motor connected to a polishing disc via an eccentric connecting block. The main unit is equipped with a sealing ring, which seals the upper surface of the polishing disc and the main unit to form a first cavity. The first cavity is connected to a connecting piece via an air duct, and the connecting piece is connected to a dust collection chamber. The lower surface of the polishing disc is connected to a polishing pad. The entire assembly consisting of the polishing disc and the polishing pad has a through hole that communicates with the first cavity. The first cavity communicates with the dust collection chamber, which contains a filter cartridge. The tail cap at the rear of the dust collection chamber has an air duct hole that can be connected to an external ventilation system. Dust in the first cavity is drawn into the dust collection chamber, filtered by the filter cartridge, and then retained in the dust collection chamber.

[0005] As a further feature, the tail cap and dust collection chamber are detachably connected. After removing the tail cap, the dust in the dust collection chamber can be removed to replace the filter cartridge.

[0006] As a further feature, the main unit is equipped with a protective ring that protects the front end of the polishing disc.

[0007] This invention provides a highly efficient automatic dust collection and filtration sander by setting a sealing ring between the main unit of the sander and the polishing disc to form a first cavity, and connecting it to a dust collection chamber through an air duct. The dust collection chamber is equipped with a filter cartridge and can be connected to an external exhaust device. This solves the problems of air pollution, health hazards, inconvenient operation, and low dust collection efficiency caused by the large amount of dust generated during the operation of traditional sanders. Attached Figure Description

[0008] Figure 1 This is a perspective view of the present utility model; Figure 2 This is a cross-sectional view of the present invention; In the diagram: Main unit 1, Motor 11, Eccentric connecting block 12. Polishing disc 2, polishing pad 21, through hole 1 22, sealing ring 23, retaining ring 24 3. First cavity; 4. Air duct; 5. Connector; 6. Dust collection chamber; 7. Tail cover; 71. Air duct hole; 8. Filter cartridge. Detailed Implementation

[0009] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0010] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0011] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views of the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0012] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0013] like Figures 1-2 As shown: This utility model provides a sander with an automatic dust collection device, including a main unit 1, a polishing disc 2, a dust collection chamber 6, and other components. Specifically, a motor 11 is installed inside the main unit 1. The output shaft of the motor 11 is connected to the polishing disc 2 through an eccentric connecting block 12. The eccentric connecting block 12 causes the polishing disc 2 to rotate eccentrically under the drive of the motor 11, thereby achieving effective sanding of the workpiece surface. A sealing ring 23 is provided at the lower part of the main unit 1. The upper end face of the polishing disc 2 and the main unit 1 are sealed by the sealing ring 23 to form a first cavity 3. The first cavity 3 is used to temporarily collect dust and debris generated during the sanding process. The first cavity 3 is connected to a connecting piece 5 through an air duct 4. The connecting piece 5 is further connected to the dust collection chamber 6, thereby forming a channel for dust to be transported from the first cavity 3 to the dust collection chamber 6.

[0014] A polishing disc 21, which can be sandpaper or other abrasive discs, is fixedly connected to the lower end face of the polishing disc 2 for direct contact with the workpiece surface for polishing. The polishing disc 2 and the polishing disc 21 together form an assembly with multiple through holes 22 communicating with the first cavity 3, allowing dust generated during sanding to enter the first cavity 3 through the through holes 22. The first cavity 3 communicates with the dust collection chamber 6, which contains a filter cartridge 8 for filtering the sucked-in dust. The rear end of the dust collection chamber 6 has a tail cover 7 with a duct hole 71, which can be connected to an external ventilation device (such as a vacuum pump or vacuum cleaner) to provide negative pressure suction.

[0015] Furthermore, the tail cover 7 and the dust collection chamber 6 are detachably connected, for example, by means of a snap-fit, thread, or magnetic structure. After removing the tail cover 7, the dust in the dust collection chamber 6 can be easily removed, and the filter cartridge 8 can be replaced to ensure the long-term efficient operation of the equipment.

[0016] Furthermore, a protective ring 24 is provided around the outer periphery of the main unit 1. The protective ring 24 surrounds the front end of the polishing disk 2 to protect the polishing disk 2 from external impacts or accidental damage, while preventing dust from escaping and improving overall safety.

[0017] The working principle of this utility model is as follows: During sanding, the motor 11 drives the eccentric connecting block 12, causing the polishing disc 2 and polishing pad 21 to rotate eccentrically, thus polishing the surface of the workpiece. Dust and debris generated during polishing enter the first cavity 3 through the through hole 22. Due to the sealing effect of the sealing ring 23, the dust in the first cavity 3 will not leak into the external environment. An external exhaust system is connected to the tail cap 7 through the duct hole 71, providing negative pressure so that the dust in the first cavity 3 is sucked into the dust collection chamber 6 through the air duct 4 and connecting piece 5. Inside the dust collection chamber 6, the dust is filtered by the filter cartridge 8 and retained within the chamber, while clean air is discharged through the external exhaust system. This design achieves automatic real-time dust collection, improves dust collection efficiency, reduces health risks to operators, and facilitates maintenance.

[0018] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no conflict in the mechanism, the features in the embodiments disclosed in the present invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A sander with an automatic dust collection device, characterized in that, The motor (11) of the main unit (1) is connected to the polishing disc (2) via an eccentric connecting block (12). The main unit (1) is equipped with a sealing ring (23). The upper end face of the polishing disc (2) and the main unit (1) are sealed by the sealing ring (23) to form a first cavity (3). The first cavity (3) is connected to the connecting piece (5) via an air duct (4). The connecting piece (5) is connected to the dust collection chamber (6). The lower end face of the polishing disc (2) is connected to the polishing pad (21). The polishing disc (2) and the polishing pad (2) are connected to the polishing disc (21). The light sheet (21) is composed of an internal through hole (22), which is connected to the first cavity (3). The first cavity (3) is connected to the dust collection chamber (6). The dust collection chamber (6) is equipped with a filter cylinder (8). The tail cover (7) at the rear end of the dust collection chamber (6) is provided with a duct hole (71). The duct hole (71) can be connected to an external ventilation device. The dust in the first cavity (3) is sucked into the dust collection chamber (6) and filtered by the filter cylinder (8) and then left in the dust collection chamber (6).

2. A sander with an automatic dust collection device according to claim 1, characterized in that, The tail cap (7) is detachably connected to the dust collection chamber (6). After removing the tail cap (7), the dust in the dust collection chamber (6) can be removed to replace the filter cartridge (8).

3. A sander with an automatic dust collection device according to claim 2, characterized in that, The main unit (1) is equipped with a protective ring (24), which protects the front end of the polishing disc (2).

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