A sanding machine with high dust removal effect

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By incorporating an air intake pipe and a dust collection chamber into the flat sander, the problem of particle accumulation and diffusion during the sanding process is solved, achieving efficient dust removal, improving sanding efficiency and the cleanliness of the working environment, and enhancing operational flexibility and safety.

CN224575337UActive Publication Date: 2026-07-31CHONGQING ZHONGCHENG WOOD IND CO LTD

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Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: CHONGQING ZHONGCHENG WOOD IND CO LTD
Filing Date: 2025-08-29
Publication Date: 2026-07-31

AI Technical Summary

Technical Problem

Existing flat sanders are prone to efficiency loss and particle diffusion during the sanding process. This is because the bottom sandpaper is not equipped with a dedicated dust removal structure. The particles generated during sanding will accumulate between the sandpaper and the sanding surface, preventing them from adhering effectively. At the same time, there is no corresponding particle collection device around the sandpaper, which causes the particles to diffuse into the operating environment, affecting the cleanliness of the working environment and the health of the operators.

Method used

The system includes an air inlet pipe, connecting pipe, air chamber, and multiple air outlets that blow air to the bottom of the sanding plate, expelling particles between the sandpaper and the sanding surface. Combined with the rear and side dust collection chambers, the particles are collected, reducing diffusion and improving sanding efficiency and environmental cleanliness.

Benefits of technology

The design of the air blowing and dust suction structure avoids particle accumulation, improves grinding efficiency, enhances the cleanliness of the working environment, reduces potential threats to the health of operators, and enhances the convenience and flexibility of the sander.

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Abstract

This utility model relates to the field of dust removal sanding machine technology, specifically to a sanding machine with high-efficiency dust removal effect. It includes a sanding machine body, side dust collection chambers, and an air inlet pipe. A rear dust collection chamber is connected to the rear of the sanding machine body, and a rear baffle is provided at the bottom of the rear dust collection chamber. A sanding plate is provided at the bottom of the sanding machine body, and sandpaper is locked to the bottom of the sanding plate. The side dust collection chambers are fixedly installed on both sides of the sanding machine body. Each side dust collection chamber includes a side dust collection chamber shell, a dust collection chamber connector, and a side baffle. The air inlet pipe is located inside the sanding machine body and the sanding plate, and includes a connecting pipe, a connecting air chamber, and multiple air outlets. This utility model, by setting up an air inlet pipe, connecting pipe, connecting air chamber, and multiple air outlets, blows air towards the bottom of the sanding plate, blowing out particles between the sandpaper and the sanding surface. The rear dust collection chamber at the rear of the sanding machine body and the side dust collection chambers on both sides collect the blown-out particles, reducing the diffusion of particles into the operating environment.

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Description

Technical Field

[0001] This utility model relates to the field of dust removal sanding machine technology, specifically a sanding machine with high-efficiency dust removal effect. Background Technology

[0002] In the wood processing industry, sanders are used for sanding and polishing wood. Existing common sanders are divided into circular sanders and flat sanders. Circular sanders use a high-speed rotating circular sandpaper disc to complete the sanding operation, while flat sanders use the reciprocating oscillation of a rectangular or square sandpaper plate for processing. Flat sanders are more effective when sanding edges and corners. However, existing flat sanders are prone to efficiency reduction and particle diffusion problems during the sanding process. This is because the bottom of the sandpaper is not equipped with a dedicated dust removal structure. The particles generated during sanding will accumulate between the sandpaper and the sanding surface, hindering their effective adhesion and reducing sanding efficiency. At the same time, because there is no corresponding particle collection device around the sandpaper, a large number of particles diffuse into the operating environment, affecting the cleanliness of the working environment and posing a potential threat to the health of the operators.

[0003] Therefore, a sander with high dust removal efficiency is proposed to solve the problems mentioned above. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a sander with highly efficient dust removal. By incorporating an air inlet pipe, connecting pipe, air chamber, and multiple air outlets, air is blown towards the bottom of the sanding plate, expelling particles between the sandpaper and the sanding surface. This prevents particle accumulation from hindering the sandpaper's adhesion to the sanding surface. The rear dust collection chamber at the rear of the sander body and the side dust collection chambers on both sides collect the blown-out particles, reducing their diffusion into the operating environment. The side dust collection chambers are connected to the sander body via clips, allowing one side dust collection chamber to be removed when sanding the edges and corners of workpieces. This improves the convenience and flexibility of the sander and solves the problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model provides the following technical solution: including a sander body, a side dust collection chamber, and an air inlet pipe, wherein a rear dust collection chamber is connected to the rear of the sander body, a rear baffle is provided at the bottom of the rear dust collection chamber, a grinding plate is provided at the bottom of the sander body, and sandpaper is locked at the bottom of the grinding plate. The side dust collection chamber is fixedly installed on both sides of the sander body. The side dust collection chamber includes a side dust collection chamber shell, a dust collection chamber connector, and a side enclosure. The air inlet pipe is located inside the sander body and the grinding plate. The air inlet pipe includes a connecting pipe, an air chamber, and multiple air outlets. The air inlet pipe is used to blow air to the bottom of the grinding plate.

[0006] Preferably, the top of the sander body is provided with an air inlet, the air inlet is connected to one end of the connecting pipe, and the other end of the connecting pipe passes through the sander body and is fixedly connected to the grinding plate.

[0007] Preferably, the grinding plate body has an internal connecting air chamber, the connecting pipe is inserted into the connecting air chamber, one end of the air outlet is located in the connecting air chamber, and the other end of the air outlet penetrates through the bottom of the grinding plate.

[0008] Preferably, the air outlet is inclined towards the rear of the sander body, and the inner air outlet is located on the center line of the bottom of the sanding plate. The sandpaper has holes that match the air outlet.

[0009] Preferably, a first dust suction pipe installation port is provided on the upper surface of the sander body, and an air passage is provided inside the sander body. The first dust suction pipe installation port is connected to the air passage, and the air passage is connected to the rear dust suction chamber.

[0010] Preferably, the top of the dust collection chamber connector is provided with a second dust collection pipe installation port, and the bottom of the dust collection chamber connector is provided with multiple second dust collection ports.

[0011] Preferably, the dust collection chamber connector is fixedly connected to the inner side of the side dust collection chamber housing, the side enclosure is fixedly connected to the bottom of the side dust collection chamber housing, and the side dust collection chamber housing is connected to the sander body by a snap fastener.

[0012] Compared with the prior art, this utility model provides a sander with a high-efficiency dust removal effect, which has the following beneficial effects: 1. By setting up an air inlet pipe, connecting pipe, connecting air chamber and multiple air outlets, air is blown to the bottom of the sanding plate to blow out the particles between the sandpaper and the sanding surface, avoiding the accumulation of particles that hinder the sandpaper from adhering to the sanding surface and improving sanding efficiency.

[0013] 2. The rear dust collection chamber at the rear of the sander body and the side dust collection chambers on both sides collect the blown particles, reducing the diffusion of particles into the operating environment, improving the cleanliness of the working environment, and reducing potential threats to the health of operators.

[0014] 3. The side dust collection chamber is connected to the sander body by a buckle. When sanding the edges and corners of the workpiece, one side dust collection chamber can be removed, which improves the convenience and flexibility of the sander. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 An isometric structural schematic diagram of the sander with high-efficiency dust removal effect according to this utility model; Figure 2 A schematic diagram of the side dust collection chamber after it has been removed from the sander with high dust removal efficiency according to this utility model; Figure 3 A schematic diagram of the cross-sectional structure of the air inlet pipe provided for the sander with high-efficiency dust removal effect according to this utility model; Figure 4 A schematic diagram showing the distribution structure of the air outlet inside the sanding plate for the sander with high-efficiency dust removal effect according to this utility model. Figure 5 A schematic diagram of the side dust collection chamber structure provided for the sander with high-efficiency dust removal effect of this utility model; Figure 6 This is a schematic diagram of the air duct structure for a sander with high-efficiency dust removal.

[0016] In the diagram: 1. Sander body; 2. Side dust collection chamber; 3. Air inlet pipe; 4. Rear dust collection chamber; 5. Rear enclosure; 6. Sanding board; 7. Sandpaper; 8. Air inlet port; 9. First dust collection pipe port; 10. Air duct; 11. Second dust collection pipe port; 12. Second dust collection port; 201. Side dust collection chamber housing; 202. Dust collection chamber connector; 203. Side enclosure; 301. Connecting pipe; 302. Connecting air chamber; 303. Air outlet. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0018] Please see Figure 1 - Figure 6This embodiment of a sander with high-efficiency dust removal includes a sander body 1, a side dust collection chamber 2, and an air inlet pipe 3. The sander body 1 has a grinding plate 6 at its bottom, with sandpaper 7 locked to the bottom of the grinding plate 6. The sandpaper 7 serves as the direct grinding component, contacting the workpiece surface. The air inlet pipe 3 is located inside the sander body 1 and the grinding plate 6. The air inlet pipe 3 includes a connecting pipe 301, a connecting air chamber 302, and multiple air outlets 303. The air inlet pipe 3 is used to blow air onto the bottom of the grinding plate 6. The top of the sander body 1 has an air inlet pipe mounting port 8, which is connected to one end of the connecting pipe 301, and the other end of the connecting pipe 301 passes through… The sander body 1 is fixedly connected to the sanding plate 6. The sanding plate 6 has a connecting air chamber 302 inside. The connecting pipe 301 is inserted into the connecting air chamber 302. One end of the air outlet 303 is located in the connecting air chamber 302, and the other end of the air outlet 303 passes through the bottom of the sanding plate 6. At the same time, the sandpaper 7 has a hole that matches the air outlet 303 to ensure that the airflow can reach directly between the sandpaper 7 and the sanding surface. The air outlet 303 is inclined towards the rear of the sander body 1. The air outlet 303 on the inner side is located on the center line of the bottom of the sanding plate 6, so that the airflow forms a backward thrust, blowing the accumulated particles away from the contact area, avoiding obstructing the sandpaper 7 from adhering, thereby improving the sanding efficiency. The rear of the sander body 1 is connected to a rear dust collection chamber 4. The bottom of the rear dust collection chamber 4 is equipped with a rear baffle 5, which intercepts particles that drift backward. A first dust collection pipe installation port 9 is opened on the upper surface of the sander body 1. An air duct 10 is located inside the sander body 1, and the first dust collection pipe installation port 9 communicates with the air duct 10. The air duct 10 is connected to the rear dust collection chamber 4, forming a rear particle collection channel. Side dust collection chambers 2 are fixedly installed on both sides of the sander body 1. Each side dust collection chamber 2 includes a side dust collection chamber housing 201, a dust collection chamber connector 202, and a side baffle 203. The dust collection chamber connector 202 is connected to the dust collection chamber... The inner side of the chamber shell is fixedly connected, and the side enclosure 203 is fixedly connected to the bottom of the dust collection chamber shell. The side enclosure 203 prevents the lateral diffusion of particles. The top of the dust collection chamber connector 202 is provided with a second dust collection pipe installation port 11, and the bottom of the dust collection chamber connector 202 is provided with multiple second dust collection ports 12. The air inlet pipe installation port 8 is used to install the air inlet pipe, which is connected to an external air supply device. An air tank can be connected here, and the air tank is connected to an air compressor. The first dust collection pipe installation port 9 and the second dust collection pipe installation port 11 are used to connect the pipes of an external vacuum cleaner. The vacuum cleaner and the air tank are common existing equipment and will not be described in detail here. The dust collection chamber shell is connected to the sander body 1 by a snap-fit. The snap-fit has a protrusion and a groove. After the side dust collection chamber 2 is connected to the dust collection chamber shell, the protrusion and groove on the inside of the snap-fit engage, and the snap-fit will not come off during use. When it is necessary to separate the side dust collection chamber 2 from the dust collection chamber shell, simply pry the side dust collection chamber 2 upwards to separate the snap-fit. When grinding the edges and corners of the workpiece, simply remove the side dust collection chamber 2 from one side of the sander body 1 to enhance operational flexibility. The air inlet 8, the first dust collection pipe 9, and the second dust collection pipe 11 are all located at the front of the sander body 1. During use, the air inlet and the dust collector pipes are suspended above the worktable. The operator holds the middle and rear of the sander body 1 to operate the sander, avoiding interference from the pipes when holding it.

[0019] The flat sander is driven by a motor to move the eccentric wheel and thus the grinding plate 6 at the bottom. This sander is an improved version of the flat sander. The movement of the grinding plate 6 at the bottom is the same as that of an ordinary flat sander. An air outlet 303 is opened at the center line of the bottom of the flat sander and tilted to the side and rear. The airflow blows out from the air outlet 303 and blows out from between the sandpaper 7 and the grinding surface, blowing out the particles between the sandpaper 7 and the grinding surface, ensuring that the basic grinding action is stable and reliable. The working principle of the above embodiment is as follows: The flat sander drives the eccentric wheel through the motor, which in turn drives the bottom sanding plate 6 to move. The movement of the bottom sanding plate 6 is the same as that of an ordinary flat sander. The external air supply equipment supplies air to the connecting air chamber 302 through the air inlet pipe, the air inlet pipe installation port 8, and the connecting pipe 301. The air is blown out from the sandpaper 7 hole through the air outlet 303, blowing the particles away from the sanding surface. At the same time, the external vacuum cleaner draws air from the rear vacuum chamber 4 through the first vacuum pipe installation port 9 and the air passage 10, and draws air from the side vacuum chamber 2 through the second vacuum pipe installation port 11 and the vacuum chamber connector 202 to complete the particle collection. When in use, the operator holds the middle and rear of the sander, with the pipes suspended above the workbench. After starting, the sanding plate 6 drives the sandpaper 7 to work. The blowing and vacuuming are carried out simultaneously. When sanding the edges and corners, the side vacuum chamber 2 can be removed by prying the buckle.

[0020] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods. As long as they can achieve their beneficial effects, they can be implemented. Therefore, this embodiment will not elaborate on their specific structural composition and working principle.

[0021] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to".

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sander with high dust removal effect, characterized in that: It includes a sander body (1), a side dust collection chamber (2) and an air intake pipe (3). The rear dust collection chamber (4) is connected to the rear of the sander body (1). The rear dust collection chamber (4) is provided with a rear enclosure (5) at the bottom. The sander body (1) is provided with a grinding plate (6) at the bottom. Sandpaper (7) is locked at the bottom of the grinding plate (6). The side dust collection chamber (2) is fixedly installed on both sides of the sander body (1). The side dust collection chamber (2) includes a side dust collection chamber shell (201), a dust collection chamber connector (202), and a side enclosure (203). The air inlet pipe (3) is located inside the sander body (1) and the grinding plate (6). The air inlet pipe (3) includes a connecting pipe (301), a connecting air chamber (302), and multiple air outlets (303). The air inlet pipe (3) is used to blow air to the bottom of the grinding plate (6).

2. The sanding machine with high dust removal effect according to claim 1, characterized in that: The top of the sander body (1) is provided with an air inlet (8), which is connected to one end of the connecting pipe (301). The other end of the connecting pipe (301) passes through the sander body (1) and is fixedly connected to the grinding plate (6).

3. The sanding machine with high dust removal effect according to claim 1, characterized in that: The grinding plate (6) has a connecting air chamber (302) inside its body. The connecting pipe (301) is inserted into the connecting air chamber (302). One end of the air outlet (303) is located inside the connecting air chamber (302), and the other end of the air outlet (303) penetrates the bottom of the grinding plate (6).

4. The sanding machine with high dust removal effect according to claim 1, characterized in that: The air outlet (303) is inclined toward the rear of the sander body (1), and the air outlet (303) on the inner side is located on the center line of the bottom of the sanding plate (6). The sandpaper (7) has a hole that matches the air outlet (303).

5. A sander with high-efficiency dust removal effect according to claim 1, characterized in that: The sander body (1) has a first dust suction pipe installation port (9) on its upper surface. The sander body (1) has an air passage (10) inside. The first dust suction pipe installation port (9) is connected to the air passage (10). The air passage (10) is connected to the rear dust suction chamber (4).

6. The sanding machine with high dust removal effect according to claim 1, characterized in that: The top of the vacuum chamber connector (202) is provided with a second vacuum pipe installation port (11), and the bottom of the vacuum chamber connector (202) is provided with multiple second vacuum ports (12).

7. The sanding machine with high dust removal effect according to claim 1, characterized in that: The dust collection chamber connector (202) is fixedly connected to the inner side of the side dust collection chamber housing (201), the side enclosure (203) is fixedly connected to the bottom of the side dust collection chamber housing (201), and the side dust collection chamber housing (201) is connected to the sander body (1) by a snap fastener.