Electric grinding machine

Abstract

The utility model is applicable to the technical field of polishing equipment, and provides an electric polisher which comprises a polishing body and a base, the base is provided with a mounting groove, the polishing body can be arranged in the mounting groove or separated from the mounting groove, and the polishing body comprises a shell and a driving assembly. The driving assembly is arranged in the shell, the output end of the driving assembly extends to the outside of the shell, the output end of the driving assembly is used for being connected with the grinding head, the grinding body can be independently held by hand to be used and can also be installed on a base to be used together, and the grinding head can be conveniently replaced. And only one electric grinding machine is needed to meet various grinding or polishing requirements of users, the application range is wide, and the production cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of grinding equipment, and in particular relates to an electric grinding machine. Background Technology

[0002] In conventional production processes, grinding and polishing machines are often only compatible with products of specific specifications. Once product specifications change, it is necessary to purchase new equipment to match them. For example, when a company launches a product of a new size or shape, its existing grinding and polishing machines will no longer meet production needs. This means the company needs to purchase new equipment.

[0003] Therefore, there is an urgent need for a grinding and polishing solution that can be applied to products of various specifications in order to reduce production costs and enhance competitiveness for enterprises. Utility Model Content

[0004] To overcome the shortcomings of the existing technology, this utility model provides an electric grinder. The grinding body of the electric grinder can be used by hand alone or mounted on a base. The grinding head can be easily replaced. Only one electric grinder is needed to meet the various grinding or polishing needs of users. It has a wide range of applications and reduces production costs.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] An electric grinder includes a grinding body and a base. The base has a mounting groove. The grinding body can be disposed in the mounting groove or detached from the mounting groove. The grinding body includes a housing and a drive assembly. The drive assembly is disposed inside the housing and its output end extends to the outside of the housing. The output end of the drive assembly is used to connect to a grinding head.

[0007] Furthermore, the base is provided with a cover plate that can cover or open the mounting groove, the bottom wall of the mounting groove is provided with a positioning protrusion, and the outer periphery of the grinding body is provided with a positioning groove, the positioning protrusion being adapted to the positioning groove.

[0008] Furthermore, a flexible gasket is provided on the side of the cover plate facing the mounting groove.

[0009] Furthermore, one end of the cover plate is hinged to the base, and the other end of the cover plate is detachably connected to the base via a spring-loaded structure.

[0010] Furthermore, the snap-fit ​​structure includes a mounting base connected to the base, a sliding post disposed on the mounting base, and a button sleeved on the sliding post. An elastic element is provided between the mounting base and the button. The button is connected to a second snap-fit. An opening is provided at the end of the cover plate, and a limiting block is provided on the side of the opening.

[0011] Furthermore, the bottom of the base is provided with several suction cups.

[0012] Furthermore, the electric grinder also includes a platform, which is located on one side of the mounting slot and is detachably connected to the base.

[0013] Furthermore, the base is provided with a guide rail and a pressable first buckle, and the bottom of the shelf is provided with a guide groove that matches the guide rail and a slot that cooperates with the first buckle.

[0014] Furthermore, the electric grinder also includes a dust cover, the base is provided with a buckle, and the dust cover is provided with a snap that matches the buckle.

[0015] Furthermore, the polishing body includes a PCB board electrically connected to the drive assembly, a first power supply system, and a second power supply system. The first power supply system includes a battery and a first charging port connected to the battery. The battery is electrically connected to the PCB board and is used to supply power to the PCB board. The second power supply system includes a second charging port, which is electrically connected to the PCB board.

[0016] The beneficial effects of this invention are:

[0017] This utility model provides an electric grinder. The grinding body of the electric grinder can be used by hand alone or mounted on a base. The grinding head can be easily replaced. Only one electric grinder is needed to meet the user's various grinding or polishing needs. It has a wide range of applications and reduces production costs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the electric grinder of this utility model in handheld mode;

[0019] Figure 2 This is another schematic diagram of the electric grinder of this utility model in handheld mode;

[0020] Figure 3 This is an exploded view of the electric grinder of this utility model in handheld mode;

[0021] Figure 4 This is an exploded view of the electric grinder of this utility model in handheld mode from another angle;

[0022] Figure 5 This is a schematic diagram of the electric grinder of this utility model in another working state;

[0023] Figure 6 This is a schematic diagram of the base in the electric grinder of this utility model;

[0024] Figure 7 This is a schematic diagram of the base of the electric grinder of this utility model from another angle;

[0025] Figure 8 This is a schematic diagram of another working state of the electric grinder of this utility model;

[0026] Figure 9 This is an exploded view of the base of the electric grinder of this utility model;

[0027] Figure 10 yes Figure 9 Enlarged diagram of point A in the diagram;

[0028] Figure 11 This is a schematic diagram of the cover plate in this utility model;

[0029] Figure 12 This is a schematic diagram of another state of the grinding body in the electric grinder of this utility model;

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Grinding body; 11. Outer shell; 111. First outer shell; 1111. First vent; 112. Second outer shell; 1121. Second vent; 12. Drive assembly; 121. Output end; 13. Positioning groove; 14. Grinding head;

[0032] 2. Base; 21. Mounting slot; 211. Positioning protrusion; 22. Cover plate; 221. Flexible gasket; 222. Opening; 2221. Limiting block; 223. First cover plate; 224. Second cover plate; 225. Rotating shaft; 23. Suction cup; 24. Guide rail; 25. Spring buckle; 251. First inverted buckle; 26. Upper base; 27. Lower base; 28. Opening; 29. ​​Buckle;

[0033] 3. PCB board; 31. Buttons; 32. Display screen;

[0034] 4. Battery; 41. First charging port; 42. Second charging port;

[0035] 5. Spring-loaded buckle structure; 51. Mounting base; 52. Sliding post; 53. Button; 54. Second inverted buckle; 55. Elastic element;

[0036] 6. Shelf; 61. Guide groove; 62. Card slot;

[0037] 7. Dust cover; 71. Barrier. Detailed Implementation

[0038] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive element, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0039] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0040] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In some descriptions of utility models, "a plurality of" means two or more, unless otherwise explicitly specified.

[0042] Reference Figures 1 to 12 This embodiment provides an electric grinder, including a grinding body 1 and a base 2. The base 2 is provided with a mounting groove 21. The grinding body 1 can be disposed in the mounting groove 21 or detached from the mounting groove 21. The grinding body 1 includes a housing 11 and a drive assembly 12. The drive assembly 12 is disposed inside the housing 11 and the output end 121 of the drive assembly 12 extends to the outside of the housing 11. The output end 121 of the drive assembly 12 is used to connect a grinding head 14.

[0043] It is understood that the electric grinder provided in this embodiment includes two working modes: handheld grinder and tabletop grinder. Handheld grinder refers to the grinder body 1 being detached from the mounting slot 21 on the base 2 and held in the user's hand. The corresponding grinder head 14 is then connected to the output end 121 of the drive component 12, allowing for handheld grindering. Tabletop grinder refers to the grinder body 1 being located in the mounting slot 21 on the base 2. The user does not need to hold the grinder body 1; they only need to connect the corresponding grinder head 14 to the output end 121 of the drive component 12 to grind the object to be ground.

[0044] In this embodiment, the electric grinder is equipped with four types of grinding heads 14: a grinding head 14 with a 2-inch sandpaper disc, a grinding head 14 with a 3-inch sandpaper disc, a grinding head 14 with a 3-inch grinding wheel, and a grinding head 14 with a 3-inch cotton wheel. When the electric grinder is in handheld grinding mode, connecting the 2-inch sandpaper disc grinding head 14 enables handheld grinding. When the electric grinder is in benchtop grinding mode, connecting any one of the other three grinding heads 14 enables benchtop trimming or polishing. In practical applications, other types of grinding heads 14 can also be used depending on the grinding requirements.

[0045] Reference Figures 1 to 2 This is the state in which the grinding body of this utility model is equipped with a grinding head 14 with a 2-inch sandpaper disc; refer to Figure 12 This is the state in which the grinding body of this utility model is equipped with a grinding head 14 with a 3-inch grinding wheel.

[0046] Preferably, the polishing body 1 includes a control component, which includes a PCB board 3 and a button 31. The PCB board 3 is electrically connected to the button 31 and the drive component 12. The PCB board 3 is disposed inside the housing 11, and the button 31 is exposed on the housing 11.

[0047] In this embodiment, the drive component 12 is a motor, and the button 31 includes a first button and a second button. The first button is used to turn the motor on, pause, or turn it off, and the second button is used to control the rotation speed of the motor, thereby controlling the grinding efficiency of the grinding head 14.

[0048] Furthermore, the control component also includes a display screen 32, which is exposed on the outer surface of the housing 11. The display screen 32 is electrically connected to the PCB board 3 and can display the working status of the grinding body 1, such as whether the motor is on and the current motor speed.

[0049] Preferably, the polishing body 1 includes a first power supply system and a second power supply system. The first power supply system includes a battery 4 and a first charging port 41 connected to the battery 4. The battery 4 is electrically connected to the PCB board 3 and is used to supply power to the PCB board 3. When the battery 4 is depleted, it can be charged by connecting to an external power source through the first charging port 41. The second power supply system includes a second charging port 42, which is electrically connected to the PCB board 3 and can directly provide working voltage to the PCB board 3 through the second charging port 42.

[0050] Understandably, the purpose of setting up two power supply systems is to suit different usage scenarios. When the user needs to hand-grind, the first power supply system can be used to power the device without connecting a power cord, which greatly facilitates the user's use. When the user needs to grind on a table, the second power supply system is switched to, and the device is connected to an external power cord through the second charging port 42 to provide working voltage to the PCB board 3.

[0051] Preferably, the outer casing 11 includes a first outer casing 111 and a second outer casing 112. The first outer casing 111 and the second outer casing 112 are connected to form an inner cavity, and the drive assembly 12, the PCB board 3 and the battery 4 are all disposed in the inner cavity.

[0052] Furthermore, the first housing 111 is provided with a first vent 1111, and the second housing 112 is provided with a second vent 1121. The first vent 1111 and the second vent 1121 can form a gas circulation loop to dissipate heat for the drive component 12 and prevent it from being affected by excessive temperature.

[0053] Preferably, the base 2 is provided with a cover plate 22 that can cover or open the mounting groove 21, the bottom wall of the mounting groove 21 is provided with a positioning protrusion 211, and the outer periphery of the grinding body 1 is provided with a positioning groove 13, the positioning protrusion 211 and the positioning groove 13 are adapted to each other.

[0054] Furthermore, the cover plate 22 is provided with a flexible gasket 221 on the side facing the mounting groove 21. The flexible gasket 221 has the characteristic of being compressible and recoverable. In this embodiment, the flexible gasket 221 is made of silicone material.

[0055] It is understood that when the grinding body 1 is placed in the mounting groove 21 and the cover plate 22 is closed on the mounting groove 21, the positioning protrusion 211 cooperates with the positioning groove 13, and the flexible gasket 221 is tightly attached to the outer periphery of the grinding body 1, so that the grinding body 1 and the base 2 will not be displaced during the grinding process and will remain in a relatively fixed state.

[0056] Furthermore, the bottom of the base 2 is provided with several suction cups 23, which can be used to firmly attach the base 2 to the plane to ensure that the base 2 will not shake or shift during the polishing process.

[0057] Preferably, one end of the cover plate 22 is hinged to the base 2, and the other end of the cover plate 22 is detachably connected to the base 2 through a spring-loaded structure 5.

[0058] Furthermore, the spring-loaded buckle structure 5 includes a mounting base 51 connected to the base 2, a sliding post 52 provided on the mounting base 51, and a button 53 sleeved on the sliding post 52. An elastic element 55 is provided between the mounting base 51 and the button 53. The button 53 is connected to a second buckle 54. An opening 222 is provided at the end of the cover plate 22, and a limiting block 2221 is provided on the side of the opening 222.

[0059] As shown in the accompanying drawings, when an external force is applied to the button 53, the button 53 slides along the sliding post 52 and compresses the elastic element 55. The second buckle 54 can be inserted into the cover plate 22 through the opening 222. When the applied external force is removed, the second buckle 54 will abut against the limiting block 2221 inside the cover plate 22, connecting the snap-fit ​​structure 5 to the cover plate 22. When it is necessary to disconnect the snap-fit ​​structure 5 from the cover plate 22, it is only necessary to apply external force to the button 53 again.

[0060] Specifically, the cover plate 22 includes a first cover plate 223 and a second cover plate 224. The first cover plate 223 is connected to the cover plate 22 to form the opening 222. The end of the cover plate 22 away from the opening 222 is provided with a pivot 225, which is hinged to the base 2.

[0061] Preferably, the electric grinder further includes a platform 6, which is located on one side of the mounting groove and is detachably connected to the base 2.

[0062] Specifically, the base 2 is provided with a guide rail 24 and a pressable snap fastener 25. The surface of the snap fastener 25 is provided with a first buckle 251. The bottom of the shelf 6 is provided with a guide groove 61 that matches the guide rail 24 and a slot 62 that cooperates with the first buckle 251. When the shelf 6 is slidably assembled onto the base 2 along the guide rail 24, the first buckle 251 and the slot 62 cooperate to lock together, fixing the shelf 6 onto the base 2.

[0063] Furthermore, the base 2 includes an upper base 26 and a lower base 27. The lower base 27 is provided with an opening 28. The upper base 26 is located above the lower base 27. The opening 28 is located below the buckle, so that the press buckle 25 can be pressed and floated and return to its original shape.

[0064] When the electric grinder of this embodiment is equipped with a grinding head 14 with a 3-inch sandpaper disc, the side of the platform 6 will overlap the grinding surface of the grinding head 14. The user can push the object to be ground along the platform 6 to the grinding surface to perform the grinding work.

[0065] Preferably, the electric grinder in this embodiment also includes a dust cover 7. The base 2 is provided with a buckle 29, and the dust cover 7 is provided with a corresponding slot 71. The slot 71 cooperates with the buckle 29 to connect the dust cover 7 to the base 2.

[0066] It is understandable that when the electric grinder of this embodiment is equipped with a grinding head 14 with a 3-inch grinding wheel, a splashing phenomenon will occur during the grinding operation, mainly manifested as the scattering of debris, sparks or grinding wheel particles. In this case, a dust cover 7 is required to protect the operator and prevent particles from splashing onto the operator.

[0067] It is understood that those skilled in the art can combine various implementation methods in the above embodiments under the guidance of the above examples to obtain technical solutions with multiple implementation methods.

[0068] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An electric sander characterized by comprising: The electric sander comprises a polishing body and a base, the base is provided with a mounting slot, the polishing body can be mounted in or separated from the mounting slot, the polishing body comprises a shell and a driving assembly, the driving assembly is arranged inside the shell and the output end of the driving assembly extends outside the shell, and the output end of the driving assembly is used for connecting a polishing head.

2. The power sander as set forth in claim 1, wherein The base is provided with a cover plate which can cover or open the mounting slot, the bottom wall of the mounting slot is provided with a positioning protrusion, the outer periphery of the polishing body is provided with a positioning groove, and the positioning protrusion and the positioning groove are matched.

3. The power sander as set forth in claim 2, wherein The side of the cover plate facing the mounting slot is provided with a flexible gasket.

4. The power sander of claim 2, wherein, One end of the cover plate is hingedly connected to the base, and the other end of the cover plate is detachably connected to the base through a snap structure.

5. The power sander of claim 4, wherein, The snap structure comprises a mounting seat connected to the base, a sliding column arranged on the mounting seat and a button sleeved on the sliding column, an elastic member is arranged between the mounting seat and the button, the button is connected with a second snap, the end of the cover plate is provided with an opening, and the side of the opening is provided with a limiting block.

6. The power sander of claim 1, wherein, The bottom of the base is provided with a plurality of suction cups.

7. The power sander of claim 1, wherein, The electric sander further comprises a storage table, the storage table is located on one side of the mounting slot and is detachably connected to the base.

8. The power sander of claim 7, wherein, The base is provided with a guide rail and a first snap which can be pressed, the bottom of the storage table is provided with a guide groove matched with the guide rail and a clamping groove matched with the first snap.

9. The power sander of claim 1, wherein, The electric sander further comprises a dust cover, the base is provided with a buckle, and the dust cover is provided with a clamping port matched with the buckle.

10. The power sander of claim 1, wherein, The polishing body comprises a PCB board electrically connected to the driving assembly, a first power supply system and a second power supply system, the first power supply system comprises a battery and a first charging port connected to the battery, the battery is electrically connected to the PCB board and used for supplying power to the PCB board, and the second power supply system comprises a second charging port which is electrically connected to the PCB board.

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