Automatic rotating gripping mechanism

Abstract

This utility model discloses an automatic rotary gripping mechanism, including a fixed frame, grippers, a horizontal push drive mechanism, and a rotary drive mechanism. The grippers include a mounting plate and several claw fingers. The mounting plate has a central hole in its center, and several fixed shafts are fixedly mounted on one side of the mounting plate. One end of each claw finger has a movable hole, and the other end of each claw finger has a gripping block on its outer side. A connecting rod is hinged to the center of each claw finger. A central shaft is movably inserted into the central hole. One end of the connecting rod is hinged to the central shaft, and the other end of the central shaft is connected to the horizontal push drive mechanism. A sleeve is fitted onto the central shaft, and the rotary drive mechanism drives the sleeve to rotate. This automatic rotary gripping mechanism can both clamp and grip workpieces such as motor stators and drive the workpiece to rotate while clamped. A spring ensures that the gripping mechanism can still hold the workpiece even in the event of an unexpected power outage or gas outage. A torque limiter limits the torque to prevent the connecting rod from jamming and the belt from breaking.

Description

Technical Field

[0001] This utility model belongs to the field of gripping mechanism technology, specifically relating to an automatic rotating gripping mechanism. Background Technology

[0002] In the field of modern industrial automation, material handling and processing are key links in the production process, widely used in intelligent manufacturing, logistics and warehousing, and many other industries. However, with the increasing demands for production efficiency and automation, traditional gripping mechanisms are gradually revealing their limitations.

[0003] Most gripping mechanisms on the market currently have limited functionality, with some only capable of simple gripping and releasing actions and lacking rotation capabilities. This makes them ineffective in situations requiring multi-angle gripping, material placement, rotation in coordination with other processing equipment, or in confined and complex work environments, hindering precise operation and severely impacting production efficiency. While some gripping mechanisms do possess rotation capabilities, their structural designs are often flawed, resulting in poor gripping stability and insufficient drive system coordination. This leads to issues such as material falling and positioning deviations during gripping, increasing defect rates and posing safety hazards. Furthermore, existing gripping mechanisms typically employ complex mechanical structures or control systems, increasing manufacturing costs and maintenance complexity while limiting their adaptability and versatility across various production scenarios. Utility Model Content

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: an automatic rotating gripping mechanism, including a fixed frame, grippers, a horizontal push drive mechanism, and a rotating drive mechanism. The grippers include a mounting plate and several claw fingers. The mounting plate has a central hole in the middle. Several fixed shafts are fixedly mounted on one side of the mounting plate. One end of the fixed shaft points to the center of the central hole. The claw fingers correspond to the fixed shafts. One end of each claw finger has a movable hole for the corresponding fixed shaft to pass through. A gripping block is provided on the outer side of the other end of each claw finger. A connecting rod is hinged to the middle of each claw finger. A central shaft is movably inserted into the central hole. The connecting rod is hinged to one end of the central shaft. The other end of the central shaft is connected to the horizontal push drive mechanism through a planar thrust bearing. A sleeve is fitted on the central shaft. The sleeve is connected to the fixed frame through a bearing. The rotating drive mechanism drives the sleeve to rotate. The sleeve is fixedly connected to the mounting plate. A key is installed on the sleeve. A keyway for the key to extend into is provided on the central shaft.

[0005] As a preferred embodiment of the above technical solution, one end of the central shaft is fixedly connected to several fixed plates, the connecting rod is hinged to the fixed plates, a spring is sleeved on the central shaft, the spring is clamped between the fixed plates and the mounting plate, and the angle between the connecting rod and the claw finger is an obtuse angle.

[0006] As a preferred embodiment of the above technical solution, the flat-push drive mechanism includes a cylinder, which is fixedly mounted on a fixed frame, and the output shaft of the cylinder is connected to the central shaft through a planar thrust bearing.

[0007] As a preferred embodiment of the above technical solution, the rotary drive mechanism includes a geared motor and a belt. The geared motor is mounted on a fixed frame, a drive pulley is mounted on the fixed frame, a driven pulley is fixedly connected to the sleeve, and the output shaft of the geared motor is fixedly connected to the drive pulley. The drive pulley drives the driven pulley to rotate through the belt.

[0008] As a preferred embodiment of the above technical solution, the drive pulley is mounted on a fixed frame via a torque limiter.

[0009] As a preferred embodiment of the above technical solution, the fixing frame is provided with mounting holes.

[0010] As a preferred embodiment of the above technical solution, connecting rods are respectively hinged to both sides of the middle part of the claw finger.

[0011] The beneficial effects of this utility model are as follows: The automatic rotary gripping mechanism of this utility model can not only clamp and grip workpieces such as motor stators, but also drive the workpiece to rotate while clamped. The spring ensures that the gripping mechanism can still hold the workpiece even in the event of an unexpected power or gas outage. The torque limiter limits the torque, preventing linkage jamming and belt breakage. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the cross-sectional structure of this utility model. Detailed Implementation

[0014] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0015] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] like Figure 1-2 As shown, the automatic rotating gripping mechanism includes a fixed frame 1, grippers, a horizontal push drive mechanism, and a rotating drive mechanism. The grippers include a mounting plate 3 and several claw fingers 2. The mounting plate 3 has a central hole 4 in the middle. Several fixed shafts 5 are fixedly mounted on one side of the mounting plate 3, with one end of the fixed shaft 5 pointing to the center of the central hole 4. The claw fingers 2 correspond to the fixed shafts 5. One end of the claw fingers 2 has a movable hole 6 for the corresponding fixed shaft 5 to pass through. A gripping block 7 is provided on the outer side of the other end of the claw fingers 2. A connecting rod 8 is hinged to the middle of the claw fingers 2. A central shaft 9 is movably inserted into the central hole 4. The connecting rod 8 is hinged to one end of the central shaft 9. The other end of the central shaft 9 is connected to the horizontal push drive mechanism through a planar thrust bearing 10. A sleeve 11 is fitted on the central shaft 9. The sleeve 11 is connected to the fixed frame 1 through a bearing 12. The rotating drive mechanism drives the sleeve 11 to rotate. The sleeve 11 is fixedly connected to the mounting plate 3. A key is installed on the sleeve 11. The central shaft 9 has a keyway for the key to extend into. The horizontal drive mechanism drives the central shaft 9 to move. The central shaft 9, through the connecting rod 8, drives the claw fingers 2 to move radially along the central hole 4, achieving different states of expansion and contraction, thereby clamping or releasing workpieces with slots in the center, such as motor stators. The rotary drive mechanism drives the entire gripper to rotate, causing the gripped workpiece to rotate together. During the workpiece rotation, the horizontal drive mechanism and the rotary drive mechanism can remain relatively stationary.

[0018] Furthermore, one end of the central shaft 9 is fixedly connected to several fixed plates 13, and the connecting rod 8 is hinged to the fixed plates 13. A spring 14 is sleeved on the central shaft 9, and the spring 14 is clamped between the fixed plates 13 and the mounting plate 3. The angle between the connecting rod 8 and the claw 2 is an obtuse angle. The central shaft 9 is subjected to the elastic force of the spring 14, causing the claw 2 to move outward in its natural state, maintaining the internal support and clamping state of the workpiece, and preventing the workpiece from falling off due to accidental power failure or gas failure. When the claw 2 retracts and releases the workpiece, the central shaft 9 is driven by a push-drive mechanism to move in the opposite direction against the elastic force of the spring 14.

[0019] Furthermore, the push-drive mechanism includes a cylinder 15, which is fixedly mounted on the fixed frame 1. The output shaft of the cylinder 15 is connected to the central shaft 9 via a planar thrust bearing 10. The planar thrust bearing 10 ensures that the rotation of the central shaft 9 does not cause the cylinder 15 to rotate, but the output shaft of the cylinder 15 can drive the central shaft 9 to move back and forth along the axial direction of the central shaft 9.

[0020] Furthermore, the rotary drive mechanism includes a geared motor 16 and a belt 17. The geared motor 16 is mounted on a fixed frame 1, and a drive pulley 18 is mounted on the fixed frame 1. A driven pulley 19 is fixedly connected to the sleeve 11. The output shaft of the geared motor 16 is fixedly connected to the drive pulley 18, and the drive pulley 18 drives the driven pulley 19 to rotate via the belt 17. The rotation of the geared motor 16 via the drive pulley 18, belt 17, and driven pulley 19 causes the sleeve 11, central shaft 9, and grippers to rotate, thereby driving the gripped workpiece to rotate.

[0021] Furthermore, the drive pulley 18 is mounted on the fixed frame 1 via a torque limiter 20. The torque limiter 20 protects the gripping mechanism from overload, impact, or abnormal torque that could cause the connecting rod 8 to jam and the belt 17 to break.

[0022] Furthermore, the mounting frame 1 is provided with mounting holes 21. The mounting holes 21 are used to connect the entire gripping mechanism to other equipment such as robots.

[0023] Furthermore, connecting rods 8 are hinged to both sides of the middle portion of each claw finger 2. The connecting rods 8 on both sides of the middle portion of each claw finger 2 balance the forces, improve the stability of the gripping mechanism, and extend its service life.

[0024] It is worth mentioning that the technical features involved in this utility model patent application, such as the torque limiter 20, the planar thrust bearing 10, the cylinder 15, and the geared motor 16, should be regarded as prior art. The specific structure, working principle, and possible control methods and spatial arrangement of these technical features can be adopted using conventional choices in the field and should not be regarded as the inventive point of this utility model patent. This utility model patent will not elaborate further.

[0025] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make many modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning or limited experimentation on the basis of the prior art should be within the scope of protection defined by the claims.

Claims

1. An automatic rotating gripping mechanism, characterized in that, The device includes a fixed frame, grippers, a horizontal push drive mechanism, and a rotary drive mechanism. The grippers include a mounting plate and several claw fingers. The mounting plate has a central hole in its center. Several fixed shafts are fixedly mounted on one side of the mounting plate, with one end of each fixed shaft pointing towards the center of the central hole. The claw fingers correspond to the fixed shafts, and one end of each claw finger has a movable hole through which the corresponding fixed shaft moves. A gripping block is provided on the outer side of the other end of each claw finger. A connecting rod is hinged to the middle of each claw finger. A central shaft is movably inserted into the central hole. The connecting rod is hinged to one end of the central shaft. The other end of the central shaft is connected to the horizontal push drive mechanism through a planar thrust bearing. A sleeve is fitted on the central shaft, and the sleeve is connected to the fixed frame through a bearing. The rotary drive mechanism drives the sleeve to rotate. The sleeve is fixedly connected to the mounting plate, and a key is installed on the sleeve. The central shaft has a keyway for the key to extend into.

2. The automatic rotating gripping mechanism as described in claim 1, characterized in that, Several fixing plates are fixedly connected to one end of the central shaft. The connecting rod is hinged to the fixing plate. A spring is sleeved on the central shaft. The spring is clamped between the fixing plate and the mounting plate. The angle between the connecting rod and the claw finger is an obtuse angle.

3. The automatic rotating gripping mechanism as described in claim 1, characterized in that, The push-drive mechanism includes a cylinder, which is fixedly mounted on a fixed frame, and the output shaft of the cylinder is connected to the central shaft through a planar thrust bearing.

4. The automatic rotating gripping mechanism as described in claim 1, characterized in that, The rotary drive mechanism includes a geared motor and a belt. The geared motor is mounted on a fixed frame, and a drive pulley is mounted on the fixed frame. A driven pulley is fixedly connected to the sleeve. The output shaft of the geared motor is fixedly connected to the drive pulley, and the drive pulley drives the driven pulley to rotate through the belt.

5. The automatic rotating gripping mechanism as described in claim 4, characterized in that, The drive pulley is mounted on a fixed frame via a torque limiter.

6. The automatic rotating gripping mechanism as described in claim 1, characterized in that, The mounting bracket is provided with mounting holes.

7. The automatic rotating gripping mechanism as described in claim 1, characterized in that, Connecting rods are hinged to both sides of the middle part of the claw.

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