Bench grinder convenient to maintain

Abstract

The utility model discloses a bench grinder convenient to maintain, and relates to the technical field of bench grinders, the bench grinder convenient to maintain comprises a body, the left side and the right side of the body are both fixedly connected with rotating shafts, the outer surface of each rotating shaft is fixedly connected with a fixing sleeve, and parts such as a spring, a limiting block, a connecting rod and the like are arranged. A fixing plate drives a fixing rod to be inserted into a rotating shaft to slide on the inner wall of a limiting groove till a limiting strip jacks a limiting block and compresses a spring, the limiting strip reaches the end of the limiting groove, meanwhile, the spring rebounds to drive the limiting block to reset, and the fixing plate jacks a fixing ring to fix a grinding wheel. The connecting rod is driven by the connecting plate to be inserted into the limiting groove until the connecting rod pushes the limiting block, meanwhile, the elastic steel sheet crosses the protrusion of the fixing plate and clamps the fixing plate, and the fixing rod is pulled out at the same time, so that the device can prevent the situation that the grinding wheel shakes due to the fact that the nut is loosened due to vibration generated in the grinding process, and the grinding wheel is convenient to replace and maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of table grinders, in particular to a table grinder that is easy to maintain. Background Art

[0002] A bench grinder is a commonly used equipment used to grind various metal tools and workpieces. It is mainly composed of a motor, a grinding wheel, a protective inner cover, a protective outer cover, a base, etc. The motor is fixed on the base, the grinding wheel is installed on both sides of the motor, and the grinding wheel protective cover is installed on the grinding wheel. It has the characteristics of high speed, simple structure, easy use, wide applicability, and manual operation.

[0003] At present, the grinding wheel is clamped and fixed by the nut on the outer surface of the rotating shaft, and the grinding wheel is driven to rotate by the high-speed rotation of the rotating shaft for grinding. However, when the bench grinder is working, severe vibration will be generated, and the nut will become loose due to the vibration of the bench grinder, so that the grinding wheel cannot be effectively clamped, resulting in shaking of the grinding wheel. Grinding in this environment will damage the grinding wheel. In addition, when replacing and maintaining the existing bench grinder, the protective shell needs to be removed before loosening the nut. This method is inefficient and the steps are cumbersome.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Utility Model Content

[0005] In view of the above background technology, the prior art has the disadvantages that the vibration generated during the grinding process causes the nut to loosen, resulting in the shaking of the grinding wheel, and the steps for replacing and maintaining the grinding wheel are cumbersome.

[0006] The utility model discloses a desktop grinding machine which is easy to maintain, comprising a main body, the left and right sides of the main body are fixedly connected to a rotating shaft, each of the outer surfaces of the rotating shaft is fixedly connected to a fixing sleeve, the outer surface of each fixing sleeve is sleeved with a grinding wheel, and each grinding wheel is in contact with a fixing ring on a side away from the fixing sleeve, and the inner wall of each rotating shaft is provided with four limiting grooves, the inner wall of each limiting groove is fixedly connected to a spring, one end of each spring away from the limiting groove is fixedly connected to a limiting block, the outer surface of each limiting block is slidably connected to the inner wall of the limiting groove, and the inner wall of each limiting groove slidably contacts a limiting strip, a fixing rod is provided inside each rotating shaft, the outer surface of each fixing rod is fixedly connected to the outer surface of the corresponding limiting strip, the outer surface of each fixing rod is provided with four sliding grooves, and the end of each fixing rod away from each other is fixedly connected to a fixing plate.

[0007] Furthermore, a connecting plate is provided on a side of each fixing plate away from the fixing rod, and four connecting rods and four elastic steel sheets are fixedly connected to the outer surface of each connecting plate.

[0008] Furthermore, the outer surface of each connecting rod is plugged into the inner wall of the corresponding sliding groove, and the outer surface of each elastic steel sheet is in contact with the outer surface of the corresponding fixing plate.

[0009] Furthermore, the left side and the right side of the body are fixedly connected with a protective shell, and the inner wall of each protective shell is provided with a positioning groove.

[0010] Furthermore, the inner wall of each positioning groove is rotatably connected to a rotating plate, and a side surface of each rotating plate that is away from each other is fixedly connected to a hand wheel.

[0011] Furthermore, a side surface of each rotating plate close to each other is provided with equally spaced sliding grooves, and an inner wall of each sliding groove is slidably connected to a movable rod.

[0012] Furthermore, the outer surface of each movable rod is fixedly connected to a movable plate, the inner wall of each protective shell is fixedly connected to a support frame, and the inner wall of each support frame is slidably connected to the outer surface of the corresponding movable rod.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model is provided with components such as a spring, a limit block, a connecting rod, etc., and the fixing plate drives the fixing rod to be inserted into the rotating shaft and slide on the inner wall of the limit groove until the limit bar pushes the limit block and compresses the spring, so that the limit bar reaches the end of the limit groove, and the spring rebounds and drives the limit block to reset, so that the fixing plate presses the fixing ring and fixes the grinding wheel. If the grinding wheel needs to be replaced and maintained, the connecting rod is driven to be inserted into the limit groove through the connecting plate until the connecting rod pushes the limit block, and the elastic steel sheet passes over the protrusion of the fixing plate and clamps the fixing plate, and the fixing rod is pulled out at the same time, so that the device can prevent the vibration generated during the grinding process from loosening the nut and causing the grinding wheel to shake, and is convenient for replacing and maintaining the grinding wheel.

[0015] 2. The utility model is provided with a rotating plate, a movable rod, a movable plate, a support frame and other components. The rotating plate is driven to rotate by rotating a hand wheel. The slide groove on the outer surface of the rotating plate drives the corresponding movable rod to move and slide on the inner wall of the support frame. At the same time, the movable rod drives the corresponding movable plate to move synchronously. The protective shell is closed and opened by synchronously moving the movable plates arranged at equal distances. Therefore, the device can replace and maintain the grinding wheel without disassembling the protective shell and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the protective shell of the utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the rotating shaft of the utility model;

[0020] Figure 4 This is a schematic diagram of the connecting rod structure of the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the rotating plate of the utility model.

[0022] In the figure: 1. body; 2. rotating shaft; 3. fixed sleeve; 4. grinding wheel; 5. fixed ring; 6. limit groove; 7. spring; 8. limit block; 9. limit strip; 10. fixed rod; 11. sliding groove; 12. fixed plate; 13. connecting plate; 14. connecting rod; 15. elastic steel sheet; 16. protective shell; 17. positioning groove; 18. rotating plate; 19. hand wheel; 20. slide groove; 21. movable rod; 22. movable plate; 23. support frame. DETAILED DESCRIPTION

[0023] The following will disclose multiple embodiments of the utility model with diagrams. For the purpose of clear description, many physical details will be described together in the following description. However, it should be understood that these physical details should not be used to limit the utility model. In other words, in some embodiments of the utility model, these physical details are not necessary. In addition, for the purpose of simplifying the diagram, some conventional structures and components will be depicted in a simple schematic manner in the diagram.

[0024] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5The utility model is a table grinder that is easy to maintain, including a body 1, a rotating shaft 2 is fixedly connected to the left and right sides of the body 1, a fixing sleeve 3 is fixedly connected to the outer surface of each rotating shaft 2, a grinding wheel 4 is sleeved on the outer surface of each fixing sleeve 3, and a fixing ring 5 is contacted on the side of each grinding wheel 4 away from the fixing sleeve 3. Four limiting grooves 6 are opened on the inner wall of each rotating shaft 2, and a spring 7 is fixedly connected to the inner wall of each limiting groove 6. One end of each spring 7 away from the limiting groove 6 is fixedly connected to a limiting block 8, and the outer surface of each limiting block 8 is slidably connected to the inner wall of the limiting groove 6. The inner wall of each limiting groove 6 is fixedly connected to a limiting block 8. They all slide in contact with the limit strip 9, and a fixing rod 10 is provided inside each rotating shaft 2. The outer surface of each fixing rod 10 is fixedly connected to the outer surface of the corresponding limit strip 9. Four sliding grooves 11 are opened on the outer surface of each fixing rod 10, and one end of each fixing rod 10 away from each other is fixedly connected to a fixing plate 12. Through the cooperation between the fixing sleeve 3, the grinding wheel 4, the fixing ring 5 and the fixing plate 12, the grinding wheel 4 is fixedly clamped and the vibration generated during the grinding process is prevented from causing the grinding wheel 4 to shake. The limit strip 9 can be automatically locked by the limit block 8 and the spring 7 to prevent the fixing rod 10 and the fixing plate 12 from falling off.

[0025] See also Figure 2 , Figure 4 A connecting plate 13 is provided on the side of each fixing plate 12 away from the fixing rod 10, and four connecting rods 14 and four elastic steel sheets 15 are fixedly connected to the outer surface of each connecting plate 13. The connecting plate 13, the connecting rod 14 and the elastic steel sheet 15 are combined to form a key for unlocking the locking state of the limit block 8 to the limit bar 9, thereby improving the speed of replacing the grinding wheel 4.

[0026] See also Figure 2 , Figure 4 The outer surface of each connecting rod 14 is plugged into the inner wall of the corresponding sliding groove 11, and the outer surface of each elastic steel sheet 15 is in contact with the outer surface of the corresponding fixed plate 12. The connecting rod 14 is inserted into the limit groove 6 until the connecting rod 14 pushes the limit block 8. At the same time, the elastic steel sheet 15 passes over the protrusion of the fixed plate 12 and clamps the fixed plate 12, making it convenient to remove the fixed rod 10 and the fixed plate 12.

[0027] See also Figure 1 , Figure 2 The left and right sides of the body 1 are fixedly connected with a protective shell 16, and the inner wall of each protective shell 16 is provided with a positioning groove 17. The protective shell 16 provides a stable support force for the rotating plate 18, prevents iron chips from splashing during grinding, and protects the safety of the user.

[0028] See also Figure 2 , Figure 5The inner wall of each positioning groove 17 is rotatably connected to a rotating plate 18, and a side of each rotating plate 18 away from each other is fixedly connected to a hand wheel 19. The positioning groove 17 limits the position of the rotating plate 18 and provides the required movement space for the rotating plate 18 to rotate.

[0029] See also Figure 5 Each rotating plate 18 has a side surface close to each other provided with equally spaced slide grooves 20, and the inner wall of each slide groove 20 is slidably connected to a movable rod 21. The slide groove 20 limits the movement space of the movable rod 21 and the movement trajectory of the movable rod 21, so that the movable rod 21 can move along a fixed route.

[0030] See also Figure 5 The outer surface of each movable rod 21 is fixedly connected with a movable plate 22, and the inner wall of each protective shell 16 is fixedly connected with a support frame 23. The inner wall of each support frame 23 is slidably connected with the outer surface of the corresponding movable rod 21. The support frame 23 limits the movement distance of the movable rod 21 and cooperates with the corresponding slide groove 20 so that the movable rod 21 will not deviate from the range of the slide groove 20 where it should slide, so that when the movable rod 21 drives the movable plate 22 to move, the opening of the protective shell 16 can be opened or closed.

[0031] When using the utility model: insert the fixing sleeve 3 into the rotating shaft 2 close to the body 1, insert the grinding wheel 4 into the fixing sleeve 3, make the grinding wheel 4 fit tightly with the fixing sleeve 3, insert the fixing ring 5 into the rotating shaft 2 and close to the fixing sleeve 3, drive the fixing rod 10 to be inserted into the rotating shaft 2 through the fixing plate 12 and slide on the inner wall of the limiting groove 6, until the limiting strip 9 pushes the limiting block 8 and compresses the spring 7, so that the limiting strip 9 reaches the end of the limiting groove 6, and at the same time the spring 7 rebounds and drives the limiting block 8 to reset, so that the fixing plate 12 presses the fixing ring 5 tightly, and the grinding wheel 4 is fixed. If the grinding wheel needs to be replaced and maintained 4. The rotating plate 18 is driven to rotate by turning the hand wheel 19. The slide groove 20 on the outer surface of the rotating plate 18 drives the corresponding movable rod 21 to move and slide on the inner wall of the support frame 23. At the same time, the movable rod 21 drives the corresponding movable plate 22 to move synchronously. The movable plates 22 arranged at equal distances move synchronously to open the opening of the protective shell 16. The connecting rod 14 is driven to insert into the limit groove 6 through the connecting plate 13 until the connecting rod 14 pushes the limit block 8. At the same time, the elastic steel sheet 15 passes over the protrusion of the fixed plate 12 and clamps the fixed plate 12. At the same time, the fixed rod 10 is pulled out to take out the grinding wheel 4.

[0032] The above is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A table grinder that is easy to maintain, comprising a body (1), characterized in that: The left and right sides of the body (1) are fixedly connected to a rotating shaft (2); the outer surface of each rotating shaft (2) is fixedly connected to a fixing sleeve (3); the outer surface of each fixing sleeve (3) is sleeved with a grinding wheel (4); the side of each grinding wheel (4) away from the fixing sleeve (3) is in contact with a fixing ring (5); the inner wall of each rotating shaft (2) is provided with four limiting grooves (6); the inner wall of each limiting groove (6) is fixedly connected to a spring (7); the end of each spring (7) away from the limiting groove (6) is fixedly connected to a fixing ring (5). A limit block (8) is connected, the outer surface of each limit block (8) is slidably connected to the inner wall of the limit groove (6), the inner wall of each limit groove (6) is slidably in contact with the limit strip (9), a fixing rod (10) is provided inside each rotating shaft (2), the outer surface of each fixing rod (10) is fixedly connected to the outer surface of the corresponding limit strip (9), the outer surface of each fixing rod (10) is provided with four sliding grooves (11), and one end of each fixing rod (10) away from each other is fixedly connected to a fixing plate (12).

2. The table grinder that is easy to maintain according to claim 1, characterized in that: A connecting plate (13) is provided on a side of each fixing plate (12) away from the fixing rod (10), and four connecting rods (14) and four elastic steel sheets (15) are fixedly connected to the outer surface of each connecting plate (13).

3. The easy-to-maintain bench grinder according to claim 2, characterized in that: The outer surface of each connecting rod (14) is plugged into the inner wall of the corresponding sliding groove (11), and the outer surface of each elastic steel sheet (15) is in contact with the outer surface of the corresponding fixing plate (12).

4. The easy-to-maintain bench grinder according to claim 1, characterized in that: The left side and right side of the body (1) are both fixedly connected with a protective shell (16), and the inner wall of each protective shell (16) is provided with a positioning groove (17).

5. The table grinder easy to maintain according to claim 4, characterized in that: The inner wall of each positioning groove (17) is rotatably connected to a rotating plate (18), and a side surface of each rotating plate (18) that is away from each other is fixedly connected to a hand wheel (19).

6. The easy-to-maintain bench grinder according to claim 5, characterized in that: Each of the rotating plates (18) has a side surface close to each other provided with equidistantly arranged sliding grooves (20), and the inner wall of each sliding groove (20) is slidably connected to a movable rod (21).

7. The easy-to-maintain bench grinder according to claim 6, characterized in that: The outer surface of each movable rod (21) is fixedly connected to a movable plate (22), the inner wall of each protective shell (16) is fixedly connected to a support frame (23), and the inner wall of each support frame (23) is slidably connected to the outer surface of the corresponding movable rod (21).

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