Pneumatic plane slewing mechanism

Abstract

The utility model provides a pneumatic plane slewing mechanism which comprises a base and a working table, a slewing mechanism is arranged between the base and the working table, and the slewing mechanism comprises a main shaft fixed on the base, a bearing rotationally connected outside the main shaft, a first air cylinder, a first pivoting seat, a rocker arm and a first connecting rod. Through the design of the rocker arm and the first connecting rod, linear motion of the first air cylinder is converted into rotary motion of the workbench, the rocker arm and the first connecting rod are driven to rotate around the main shaft through stretching and retracting of the output shaft of the first air cylinder, and therefore forward rotation and reverse rotation of the workbench are achieved; the slewing mechanism is simple in structure, reliable in performance, convenient to disassemble and assemble, driven by the air cylinder, lower in operation cost and capable of being suitable for extreme environments, and therefore the slewing mechanism can be widely applied to the technical field of industrial manufacturing.

Description

Technical Field

[0001] This utility model relates to the field of equipment and tooling technology, and in particular to a pneumatic planar rotary mechanism. Background Technology

[0002] Rotary machining tables have a wide range of applications in industrial manufacturing. They can be used not only to transport workpieces but also to perform multi-station machining. Currently, most rotary machining tables are driven by servo motors. Although the motor drive system is simple, it is not only expensive to manufacture and process, but servo motors also have high requirements for the working environment, and their performance is not ideal in humid environments. Utility Model Content

[0003] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a pneumatic planar rotary mechanism to solve the problem of high cost of servo motor driven rotation in the prior art.

[0004] To achieve the above and other related objectives, this utility model provides a pneumatic planar rotary mechanism, including a base and a worktable. A rotary mechanism is provided between the base and the worktable. The rotary mechanism includes a main shaft fixed on the base, a bearing rotatably connected to the main shaft, a first cylinder, a first pivot seat, a rocker arm, and a first connecting rod. The worktable is fixed on the bearing, the first pivot seat is fixed on the base, one end of the rocker arm is pivotally connected to the output shaft of the first cylinder, the middle part of the rocker arm is pivotally connected to the first pivot seat, and the other end of the rocker arm has an arc portion surrounding the bearing. The arc portion is pivotally connected to one end of the first connecting rod, and the other end of the first connecting rod is pivotally connected to the worktable.

[0005] In one embodiment of the present invention, the bottom of the workbench is connected to a downwardly extending positioning plate, and the base is provided with limiting mechanisms on both sides of the main shaft, the limiting mechanisms cooperating to lock the positioning plate.

[0006] In one embodiment of the present invention, the limiting mechanism includes a second pivot seat fixed on the base plate, and the pivot seat is provided with a limiting block for limiting the position of the positioning plate.

[0007] In one embodiment of the present invention, the limiting mechanism further includes a second cylinder, a clamping plate, and a second connecting rod mounted on a second pivot seat. One end of the clamping plate is pivotally connected to the output shaft of the second cylinder, the middle part of the clamping plate is pivotally connected to one end of the second connecting rod, the other end of the second connecting rod is pivotally connected to the second pivot seat, and the other end of the clamping plate can cooperate with the limiting block to clamp the positioning plate.

[0008] In one embodiment of the present invention, the second pivot seat is provided with an inclined slot, and the limiting block is installed in the inclined slot.

[0009] In one embodiment of the present invention, the worktable is provided with a clamp for holding the workpiece.

[0010] As described above, the pneumatic planar rotary mechanism of this utility model has the following beneficial effects:

[0011] 1. This utility model, through the design of the rocker arm and the first connecting rod, converts the linear motion of the first cylinder into the rotational motion of the worktable. By extending and retracting the output shaft of the first cylinder, the rocker arm and the first connecting rod are driven to rotate around the main shaft, thereby realizing the forward and reverse rotation of the worktable. This rotary mechanism has a simple structure, reliable performance, and is easy to assemble and disassemble. Moreover, it is driven by a cylinder, resulting in lower operating costs and suitability for extreme environments. Therefore, it can be widely used in the field of industrial manufacturing technology.

[0012] 2. This utility model, by setting a limiting mechanism, can lock the worktable after it has rotated to the correct position, ensuring the stability and reliability of the worktable in the correct position. Furthermore, by adjusting the position of the limiting mechanism, the rotation angle of the worktable can be adjusted. The limiting mechanism has a simple structure and is easy to assemble and disassemble. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the pneumatic planar rotary mechanism disclosed in the embodiments of this utility model. Figure 1 .

[0014] Figure 2 This is a schematic diagram of the structure of the pneumatic planar rotary mechanism disclosed in the embodiments of this utility model. Figure 2 .

[0015] Figure 3 This is a disassembly diagram of the pneumatic planar rotary mechanism disclosed in the embodiments of this utility model.

[0016] Figure 4 This is a schematic diagram of the limiting mechanism disclosed in the embodiments of this utility model.

[0017] Component designation explanation

[0018] 1. Base; 2. Rotary mechanism; 21. Main shaft; 22. Bearing; 23. First pivot seat; 24. First cylinder; 25. Rocker arm; 26. First connecting rod; 3. Limiting mechanism; 31. Second pivot seat; 32. Limiting block; 33. Second cylinder; 34. Second connecting rod; 35. Clamping plate; 4. Worktable; 41. Positioning plate. Detailed Implementation

[0019] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. It should be noted that, unless otherwise specified, the following embodiments and features can be combined with each other.

[0020] Please see Figure 1-3 This utility model provides a pneumatic planar rotary mechanism, including a base 1 and a worktable 4. A rotary mechanism 2 is provided between the base 1 and the worktable 4. The rotary mechanism 2 is used to control the worktable 4 to rotate and reset relative to the base 1 in a plane.

[0021] The rotary mechanism 2 includes a main shaft 21 fixed on the base 1, a bearing 22 rotatably connected to the main shaft 21, a first cylinder 24, a first pivot seat 23, a rocker arm 25, and a first connecting rod 26. The worktable 4 is fixed on the bearing 22, and the worktable 4 and the bearing 22 rotate together. The design of the bearing 22 ensures the smooth rotation of the worktable 4. The first pivot seat 23 is fixed on the base 1. One end of the rocker arm 25 is pivotally connected to the output shaft of the first cylinder 24, and the middle part of the rocker arm 25 is pivotally connected to the first pivot seat. The other end of the rocker arm 25 has an arc portion surrounding the bearing 22, which is pivotally connected to one end of the first connecting rod 26. The other end of the first connecting rod 26 is pivotally connected to the worktable 4.

[0022] This invention, through the design of the rocker arm 25 and the first connecting rod 26, converts the linear motion of the first cylinder 24 into the rotational motion of the worktable 4. The extension and retraction of the output shaft of the first cylinder 24 drives the rocker arm 25 and the first connecting rod 26 to rotate around the main shaft 21, thereby realizing the forward and reverse rotation of the worktable 4. This rotary mechanism 2 has a simple structure, reliable performance, and is easy to assemble and disassemble. Furthermore, being driven by a cylinder, it has lower operating costs and can be widely applied in the field of manufacturing technology.

[0023] To limit the rotation range of the worktable 4, a downwardly extending positioning plate 41 is connected to the bottom of the worktable 4. The base 1 has limiting mechanisms 3 on both sides of the spindle 21. Each limiting mechanism 3 includes a second pivot seat 31 fixed to the base plate, and a limiting block 32 is provided on the pivot seat to limit the position of the positioning plate 41. When the positioning plate 41 moves to contact the limiting block 32, the limiting block 32 prevents the positioning plate 41 from continuing to move, and the worktable 4 stops rotating.

[0024] Furthermore, to ensure that the worktable 4 is locked after rotating to its final position, the limiting mechanism 3 also includes a second cylinder 33, a clamping plate 35, and a second connecting rod 34 mounted on the second pivot seat 31. One end of the clamping plate 35 is pivotally connected to the output shaft of the second cylinder 33, the middle part of the clamping plate 35 is pivotally connected to one end of the second connecting rod 34, and the other end of the second connecting rod 34 is pivotally connected to the second pivot seat 31. The other end of the clamping plate 35 can cooperate with the limiting block 32 to clamp the positioning plate 41. The second cylinder 33 is used to drive the clamping plate 35 to open and clamp. When the positioning plate 41 moves to contact the limiting block 32, the second cylinder 33 drives the clamping plate 35 to clamp the positioning plate 41, thus locking the worktable 4.

[0025] Furthermore, the second pivot seat is provided with an inclined slot, and the limiting block 32 is installed in the inclined slot. The inclined slot can better clamp the positioning plate 41, prevent the positioning plate 41 from swinging after being clamped, and ensure the stability and reliability of the worktable 4 in the locked state.

[0026] In one embodiment of the present invention, the workbench 4 is provided with a clamp for holding the workpiece.

[0027] In summary, this invention, through the design of the rocker arm and the first connecting rod, converts the linear motion of the first cylinder into the rotational motion of the worktable. The extension and retraction of the first cylinder's output shaft drives the rocker arm and the first connecting rod to rotate around the main shaft, thereby achieving the forward and reverse rotation of the worktable. This rotary mechanism has a simple structure, reliable performance, and convenient assembly and disassembly. Furthermore, being driven by a cylinder, it has lower operating costs and is suitable for extreme environments, thus it can be widely applied in the field of industrial manufacturing technology. Therefore, this invention effectively overcomes the various shortcomings of existing technologies and has high industrial applicability.

[0028] The terms used in this specification, such as "upper", "lower", "left", "right", "front", "back", "middle" and "one", are merely for clarity of description and are not intended to limit the scope of implementation of this utility model. Any changes or adjustments to their relative relationships, without substantially altering the technical content, shall also be considered within the scope of implementation of this utility model.

[0029] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit this utility model. All equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A pneumatic planar rotary mechanism, characterized in that, The device includes a base and a worktable, with a rotating mechanism between the base and the worktable. The rotating mechanism includes a main shaft fixed on the base, a bearing rotatably connected to the main shaft, a first cylinder, a first pivot seat, a rocker arm, and a first connecting rod. The worktable is fixed on the bearing, the first pivot seat is fixed on the base, one end of the rocker arm is pivotally connected to the output shaft of the first cylinder, the middle part of the rocker arm is pivotally connected to the first pivot seat, and the other end of the rocker arm has an arc portion surrounding the bearing. The arc portion is pivotally connected to one end of the first connecting rod, and the other end of the first connecting rod is pivotally connected to the worktable.

2. The pneumatic planar rotary mechanism according to claim 1, characterized in that, The bottom of the worktable is connected to a downwardly extending positioning plate, and the base is provided with limiting mechanisms on both sides of the spindle. The limiting mechanisms cooperate to lock the positioning plate.

3. The pneumatic planar rotary mechanism according to claim 2, characterized in that, The limiting mechanism includes a second pivot seat fixed to the base plate, and the pivot seat is provided with a limiting block for limiting the position of the positioning plate.

4. The pneumatic planar rotary mechanism according to claim 3, characterized in that, The limiting mechanism also includes a second cylinder, a clamping plate, and a second connecting rod mounted on a second pivot seat. One end of the clamping plate is pivotally connected to the output shaft of the second cylinder, the middle part of the clamping plate is pivotally connected to one end of the second connecting rod, the other end of the second connecting rod is pivotally connected to the second pivot seat, and the other end of the clamping plate can cooperate with the limiting block to clamp the positioning plate.

5. The pneumatic planar rotary mechanism according to claim 3 or 4, characterized in that, The second pivot seat is provided with an inclined slot, and the limiting block is installed in the inclined slot.

6. The pneumatic planar rotary mechanism according to any one of claims 1-4, characterized in that, The workbench is equipped with clamps for holding workpieces.

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