Pneumatic abrasive paper machine

Abstract

The pneumatic sand paper machine comprises a machine shell and a base, a rotating piece is fixedly connected to the interior of the machine shell, the base is fixedly connected to the bottom end of the rotating piece, a handle is fixed to one side of the machine shell, the base comprises a base plate, a damping structure and a rough surface bottom, and the base plate is arranged at the bottom end of the base. A damping structure is fixed to the top of the chassis. By arranging the damping structure, when equipment works, the chassis is influenced by pressure, so that the piston rod and the piston pad which are fixed with the chassis are extruded upwards, hydraulic oil enters the bottom of the piston pad from the oil discharge hole through the oil return hole, and when the pressure borne by the chassis disappears, the spring pushes the piston pad to reset through tension. The hydraulic oil enters the top of the piston pad from the oil return hole, oil pressure buffering has an efficient buffering effect, and the rebound phenomenon is avoided, so that the buffering effect of the pneumatic sand paper machine is enhanced, damage caused by improper pressing angle and force is avoided, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical equipment, in particular to a pneumatic sandpaper machine. Background Art

[0002] A pneumatic sandpaper machine is a sandpaper machine that uses air pressure to drive its work. It is usually used for surface grinding, polishing and rust removal of metal, plastic, wood and other materials. It has the characteristics of compact structure, easy operation and high work efficiency. It is suitable for various industrial fields. When using it, keep a certain angle between the pneumatic sandpaper machine and the surface to be sanded, and apply pressure evenly to obtain a better sanding effect.

[0003] Traditional pneumatic sandpaper machines rotate at high speed during use, and if the pressure angle and force are not properly controlled, without a good buffer structure, it is likely to cause damage to the internal connecting axis, thus affecting its service life. Utility Model Content

[0004] The utility model aims to provide a pneumatic sandpaper machine to solve the defect of poor buffering effect of the existing pneumatic sandpaper machine.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a pneumatic sandpaper machine, comprising a casing and a base, a rotating part is fixedly connected to the inside of the casing, and the bottom end of the rotating part is fixedly connected to the base, and a handle is fixed on one side of the casing; the base comprises a chassis, a shock-absorbing structure and a rough bottom; the bottom end of the base is provided with a chassis, and the top of the chassis is fixed with a shock-absorbing structure, and the bottom end of the chassis is provided with a rough bottom; the shock-absorbing structure comprises a tube body, a spring, a piston pad, a piston rod, an inner tube, an oil return hole and an oil drain hole; the tube body is fixed at the edge of the base, the inner wall of the tube body is provided with an inner tube, a piston rod is provided inside the tube body, and a piston pad is fixed to the top of the piston rod, a spring is fixed to the top of the piston pad, the top of the inner side wall of the inner tube is symmetrically provided with oil drain holes, and the bottom of the inner side wall of the inner tube is symmetrically provided with oil return holes.

[0006] Preferably, the tube bodies are distributed at equal intervals about the center point of the base, a sliding structure is formed between the piston rod and the tube body, and the tube body and the piston rod are sealed and connected.

[0007] Preferably, hydraulic oil is provided inside the tube body, the two ends of the spring are fixedly connected to the piston pad and the inner cavity of the tube body respectively, and the bottom end of the piston rod is fixedly connected to the top of the chassis, so as to realize uniform speed buffering and resetting of the chassis, avoid rebounding, and ensure stability during operation.

[0008] Preferably, the fleece bottom is made of brushed fleece, and the fleece bottom is attached to the sandpaper sheet by Velcro.

[0009] Preferably, the handle includes an air inlet port, a speed regulating switch, a push plate, an exhaust port and a start switch, and an air inlet port is fixed to the top end of one side of the handle.

[0010] Preferably, a speed regulating switch is installed on one side of the air inlet interface, an exhaust port is arranged at the bottom end of the air inlet interface, and a sound insulation pad is arranged inside the exhaust port. The sound insulation pad inside the exhaust port enhances the effect of sound insulation and noise reduction.

[0011] Preferably, a pressing plate is fixed to one side of the bottom end of the handle, and a starting switch is arranged on the top of the pressing plate. The starting switch is driven by pressing the pressing plate by holding the handle, which simplifies the operation.

[0012] The utility model provides a pneumatic sandpaper machine, which has the advantages that: by providing a shock-absorbing structure, when the sandpaper machine starts working, the chassis rotates at high speed to contact the grinding piece, and the chassis is affected by pressure, so that the piston rod and the piston pad fixed thereto are squeezed upward in the tube body, and the tube body is provided with hydraulic oil, which is squeezed upward so that the hydraulic oil flows from the oil discharge hole to the inner tube, and then enters the bottom of the piston pad through the oil return hole. When the pressure on the chassis disappears, the piston pad is pushed to reset by the tension of the spring, so that the hydraulic oil passes through the oil discharge hole from the oil return hole to the top of the piston pad. Because its oil pressure buffer has a high-efficiency buffering effect and will not rebound, it is very stable when working, so that the pneumatic sandpaper machine has a good buffering effect, avoids damage to the axis caused by problems such as the pressure angle and strength, and extends the service life of the sandpaper machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model from a top view;

[0014] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model when viewed from above;

[0015] Figure 3 It is a three-dimensional structural schematic diagram of a half-section state of the casing of the utility model;

[0016] Figure 4 It is a schematic diagram of the three-dimensional structure of the half-section state of the tube body of the utility model;

[0017] Figure 5 It is a schematic diagram of the three-dimensional structure of the exhaust port of the utility model.

[0018] In the figure: 1. Casing; 2. Base; 201. Chassis; 202. Shock-absorbing structure; 2021. Tube body; 2022. Spring; 2023. Piston pad; 2024. Piston rod; 2025. Inner tube; 2026. Oil return hole; 2027. Oil drain hole; 203. Rough bottom; 3. Handle; 301. Air inlet interface; 302. Speed ​​control switch; 303. Press plate; 304. Exhaust port; 305. Start switch; 306. Sound insulation pad; 4. Rotating part. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-Figure 5The utility model provides a pneumatic sandpaper machine, comprising a housing 1 and a base 2. A rotating member 4 is fixedly connected to the inside of the housing 1, and the bottom end of the rotating member 4 is fixedly connected to the base 2. A handle 3 is fixed to one side of the housing 1. The base 2 comprises a chassis 201, a shock absorbing structure 202 and a rough bottom 203. The bottom end of the base 2 is provided with a chassis 201, and the top of the chassis 201 is fixed with a shock absorbing structure 202, and the bottom end of the chassis 201 is provided with a rough bottom 203. The rough bottom 203 is made of velvet, and the rough bottom 203 is in contact with the sandpaper. The paper pieces are attached with Velcro, and the shock absorbing structure 202 includes a tube body 2021, a spring 2022, a piston pad 2023, a piston rod 2024, an inner tube 2025, an oil return hole 2026 and an oil discharge hole 2027; the tube body 2021 is fixed to the edge of the base 2, the inner wall of the tube body 2021 is provided with an inner tube 2025, the interior of the tube body 2021 is provided with a piston rod 2024, and the top of the piston rod 2024 is fixed with a piston pad 2023, the top of the piston pad 2023 is fixed with a spring 2022, and the inner tube 2025 is provided with an oil return hole 2026 and an oil discharge hole 2027. The top of the inner wall of the inner tube 2025 is symmetrically provided with an oil drain hole 2027, the bottom of the inner wall of the inner tube 2025 is symmetrically provided with an oil return hole 2026, the tube body 2021 is evenly spaced about the center point of the base 2, a sliding structure is formed between the piston rod 2024 and the tube body 2021, and the tube body 2021 and the piston rod 2024 are sealed and connected, the inside of the tube body 2021 is provided with hydraulic oil, the two ends of the spring 2022 are respectively fixedly connected to the piston pad 2023 and the inner cavity of the tube body 2021, and the piston rod 2024 is sealed and connected to the inner cavity of the piston pad 2023 and the inner cavity of the tube body 2021. The bottom end is fixedly connected to the top of the chassis 201, and the handle 3 includes an air inlet interface 301, a speed control switch 302, a push plate 303, an exhaust port 304 and a start switch 305. The air inlet interface 301 is fixed to the top of one side of the handle 3, and the speed control switch 302 is installed on one side of the air inlet interface 301. The bottom end of the air inlet interface 301 is provided with an exhaust port 304, and a sound insulation pad 306 is provided inside the exhaust port 304. A push plate 303 is fixed to one side of the bottom end of the handle 3, and the start switch 305 is provided on the top of the push plate 303.

[0021] See attached Figure 2 , Figure 3 , Figure 4 , Figure 5When the device is used, the air pump is connected to the air inlet interface 301, and then the handle 3 is held to press the button 303 to squeeze the start switch 305. After the sandpaper machine is started, the chassis 201 rotates at high speed, and the chassis 201 rotates at high speed to contact the grinding piece. The chassis 201 is affected by the pressure, so that the piston rod 2024 fixed thereto drives the piston pad 2023 to squeeze upward in the tube body 2021. Hydraulic oil is arranged in the tube body 2021. The upward squeezing makes the hydraulic oil flow from the oil discharge hole 2027 to the inner tube 2025, and then passes through the oil return hole 2026. The exhaust port 304 is provided with a sound insulation pad 306 to enhance the noise reduction effect. When the work is finished, the pressure on the chassis 201 disappears, and the piston pad 2023 is reset by the tension of the spring 2022, so that the hydraulic oil passes through the oil return hole 2026 through the oil discharge hole 2027 to the top of the piston pad 2023, realizing uniform buffering and resetting without rebound, making the sandpaper machine very stable when working, avoiding damage to the axis caused by problems of pressure angle and strength, and extending the service life of the sandpaper machine.

[0022] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pneumatic sandpaper machine, comprising a housing (1) and a base (2); Features: A rotating member (4) is fixedly connected to the interior of the housing (1), and a base (2) is fixedly connected to the bottom end of the rotating member (4); a handle (3) is fixed to one side of the housing (1); The base (2) comprises a bottom plate (201), a shock absorbing structure (202) and a rough bottom (203); A bottom plate (201) is provided at the bottom end of the base (2), a shock absorbing structure (202) is fixed on the top of the bottom plate (201), and a rough bottom (203) is provided at the bottom end of the bottom plate (201); The shock absorbing structure (202) comprises a tube body (2021), a spring (2022), a piston pad (2023), a piston rod (2024), an inner tube (2025), an oil return hole (2026) and an oil discharge hole (2027); The tube body (2021) is fixed to the edge of the base (2); an inner tube (2025) is arranged on the inner wall of the tube body (2021); a piston rod (2024) is arranged inside the tube body (2021); a piston pad (2023) is fixed to the top of the piston rod (2024); a spring (2022) is fixed to the top of the piston pad (2023); oil drain holes (2027) are symmetrically arranged on the top of the inner wall of the inner tube (2025); and oil return holes (2026) are symmetrically arranged on the bottom of the inner wall of the inner tube (2025).

2. A pneumatic sandpaper machine according to claim 1, characterized in that: The tube bodies (2021) are distributed at equal intervals about the center point of the base (2); a sliding structure is formed between the piston rod (2024) and the tube body (2021); and the tube body (2021) and the piston rod (2024) are sealed and connected.

3. A pneumatic sandpaper machine according to claim 1, characterized in that: Hydraulic oil is provided inside the tube body (2021), the two ends of the spring (2022) are fixedly connected to the piston pad (2023) and the inner cavity of the tube body (2021), respectively, and the bottom end of the piston rod (2024) is fixedly connected to the top end of the chassis (201).

4. A pneumatic sandpaper machine according to claim 1, characterized in that: The material of the fleece bottom (203) is fleece, and the fleece bottom (203) is attached to the sandpaper sheet by Velcro.

5. A pneumatic sandpaper machine according to claim 4, characterized in that: The handle (3) comprises an air inlet interface (301), a speed regulating switch (302), a push plate (303), an air outlet (304) and a start switch (305), and the air inlet interface (301) is fixed to the top end of one side of the handle (3).

6. A pneumatic sandpaper machine according to claim 5, characterized in that: A speed regulating switch (302) is installed on one side of the air inlet interface (301), an exhaust port (304) is arranged at the bottom end of the air inlet interface (301), and a sound insulation pad (306) is arranged inside the exhaust port (304).

7. A pneumatic sandpaper machine according to claim 5, characterized in that: A pressing plate (303) is fixed to one side of the bottom end of the handle (3), and a starting switch (305) is arranged at the top end of the pressing plate (303).

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