Automatic grabbing mechanism of pneumatic clamping jaw for circular parts

Abstract

The utility model discloses an automatic grabbing mechanism of a pneumatic clamping jaw for round pieces, which relates to the technical field of pneumatic clamping jaws and comprises a control body, a first cylinder is mounted on one side of the bottom end of the control body, a grabbing mechanism is mounted at the output end of the first cylinder, and an inner supporting mechanism is mounted on the inner side of the grabbing mechanism. Synchronous movement of the movable block and the driving rod is effectively driven through the movable rod, coordinated operation of the clamping system is achieved, meanwhile, the inner supporting mechanism accurately controls the position of the inner supporting block through the movable frame and the second transmission rod, stable supporting is provided from the inner side of a workpiece, and the working efficiency is improved. By means of the internal and external cooperative clamping mode, the firmness and stability of positioning grabbing are remarkably improved, the accuracy of the feeding and discharging process is ensured, and damage and displacement of workpieces are effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic clamping jaws, in particular to an automatic grasping mechanism for pneumatic clamping jaws of round pieces. Background Art

[0002] A lathe is a machine tool that mainly uses a turning tool to turn a rotating workpiece. Lathes are the most important type of metal cutting machine tools. In general machine manufacturing factories, lathes are the most numerous and are also called mother machines. When feeding materials, a gripping device is required to feed the workpiece.

[0003] For example, publication number CN214924496U discloses a mechanical grasping device for a CNC lathe, including an air pump, an air pipe, a connecting rod, a fixed plate, a piston rod, a sleeve rod, a clamping plate, a first rotating block, a support plate, a mounting block, a base, a moving block, a first motor, a threaded rod, a sprocket, a chain, a second rotating block, a fixed rod, a connecting block, a second motor, an adjusting block, a third motor, a worm, a clamping claw, a connecting frame, a first hydraulic push rod, a first fixed block, a second hydraulic push rod, a second fixed block, a fourth motor and a worm gear.

[0004] However, in the prior art, when processing certain special circular parts, especially hollow circular parts, the strength of the clamping parts is relatively low. If the clamping jaws use too much force during the clamping process, it is easy to cause a dent at the clamping point. This dent will not only affect the overall appearance of the circular part, but more importantly, it will also change the size accuracy and shape accuracy of the circular part, thereby seriously affecting the processing quality of the product. Utility Model Content

[0005] The utility model aims to solve the problem in the prior art that excessive force may easily cause depression at the clamping position, and proposes an automatic gripping mechanism for round pieces with pneumatic clamps.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a pneumatic gripper automatic grasping mechanism for round parts, comprising a control body, a first cylinder is installed on one side of the bottom end of the control body, a grasping mechanism is installed on the output end of the first cylinder, and an inner support mechanism is installed on the inner side of the grasping mechanism;

[0007] The grabbing mechanism includes a shell, a mounting frame and a positioning block, one end of the mounting frame is fixedly connected to the shell, a supporting block is fixedly connected to the outer surface of the mounting frame, a first linkage rod is rotatably connected to the top of the supporting block, and a second linkage rod is rotatably connected to the middle of the supporting block, a first transmission rod is rotatably connected to the inner side of the second linkage rod, one end of the first linkage rod is rotatably connected to the first transmission rod, one end of the second linkage rod is rotatably connected to the first transmission rod, a movable block is installed on one side of the mounting frame, one end of the first transmission rod is rotatably connected to the movable block, and a connecting frame is fixedly connected to the outer surface of the mounting frame.

[0008] Preferably, the inner support mechanism comprises a connecting sleeve and a fixing frame, a driving rod is slidably connected to the inner side of the connecting sleeve, one end of the driving rod passes through the connecting sleeve and the fixing frame in sequence, and one end of the driving rod is fixedly connected to the movable frame.

[0009] Preferably, the outer surface of the movable frame is rotatably connected to a second transmission rod, and the inner side of the outer surface of the fixed frame is rotatably connected to a third linkage rod.

[0010] Preferably, one end of the second transmission rod is rotatably connected to the middle part of the third linkage rod, and one end of the third linkage rod is rotatably connected to an inner support block.

[0011] Preferably, one end of the connecting frame is fixedly connected to the connecting sleeve, and one end of the driving rod passes through the connecting frame.

[0012] Preferably, a second cylinder is installed inside the shell, and a movable rod is fixedly connected to the output end of the second cylinder.

[0013] Preferably, one end of the movable rod passes through the mounting frame, and the middle portion of the movable rod is fixedly connected to the movable block, and one end of the movable rod is fixedly connected to the driving rod.

[0014] Compared with the prior art, the advantages and positive effects of the utility model are:

[0015] 1. In the utility model, the movable rod effectively drives the synchronous movement of the movable block and the driving rod, thereby realizing the coordinated operation of the clamping system. At the same time, the inner support mechanism accurately controls the position of the inner support block through the movable frame and the second transmission rod, and provides stable support from the inside of the workpiece. This internal and external coordinated clamping method not only significantly improves the firmness and stability of positioning and grasping, but also ensures the accuracy of the loading and unloading process, and effectively prevents damage and displacement of the workpiece.

[0016] 2. In the utility model, the linkage effect of multiple components is realized through the movement of the movable rod, which effectively drives the movable block and the driving rod to move synchronously, and the second transmission rod moves accordingly, thereby accurately controlling the support of the inner support block to the inner side of the workpiece. During the whole process, the fixed frame remains stable, ensuring the structural stability of the clamping system. The support of the inner side of the workpiece by the inner support block effectively prevents the workpiece from shifting or deforming during the processing, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model provides a three-dimensional structural diagram of the automatic grasping mechanism of the pneumatic gripper for round parts;

[0018] Figure 2 The utility model provides a three-dimensional structural diagram of the grasping mechanism in the automatic grasping mechanism of the pneumatic gripper for round parts;

[0019] Figure 3 This is a partial three-dimensional structural diagram of the pneumatic gripper automatic grasping mechanism for round parts proposed in the utility model;

[0020] Figure 4 The utility model provides a three-dimensional structural schematic diagram of the inner support mechanism in the automatic grasping mechanism of the pneumatic clamp for round parts.

[0021] Legend: 1. Control body; 2. First cylinder; 3. Grasping mechanism; 31. Shell; 32. Second cylinder; 321. Movable rod; 33. Mounting frame; 331. Support block; 34. Positioning block; 35. First linkage rod; 36. First transmission rod; 37. Movable block; 38. Connecting frame; 39. Second linkage rod; 4. Internal support mechanism; 41. Connecting sleeve; 42. Drive rod; 43. Fixed frame; 44. Third linkage rod; 45. Internal support block; 46. Movable frame; 47. Second transmission rod. DETAILED DESCRIPTION

[0022] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0024] Embodiment 1

[0025] like Figure 1-3As shown, the utility model provides a pneumatic gripper automatic grasping mechanism for round pieces, comprising a control body 1, a first cylinder 2 is installed on one side of the bottom end of the control body 1, a grasping mechanism 3 is installed on the output end of the first cylinder 2, and an inner support mechanism 4 is installed on the inner side of the grasping mechanism 3;

[0026] The grabbing mechanism 3 includes a housing 31, a mounting frame 33 and a positioning block 34. One end of the mounting frame 33 is fixedly connected to the housing 31. A support block 331 is fixedly connected to the outer surface of the mounting frame 33. A first linkage rod 35 is rotatably connected to the top of the support block 331, and a second linkage rod 39 is rotatably connected to the middle of the support block 331. A first transmission rod 36 is rotatably connected to the inner side of the second linkage rod 39. One end of the first linkage rod 35 is rotatably connected to the first transmission rod 36, and one end of the second linkage rod 39 is rotatably connected to the first transmission rod 36. A movable block 37 is installed on one side of the mounting frame 33. One end of the first transmission rod 36 is rotatably connected to the movable block 37. A connecting frame 38 is fixedly connected to the outer surface of the mounting frame 33. A second cylinder 32 is installed on the inner side of the housing 31. A movable rod 321 is fixedly connected to the output end of the second cylinder 32. One end of the movable rod 321 passes through the mounting frame 33, and the middle of the movable rod 321 is fixedly connected to the movable block 37. One end of the movable rod 321 is fixedly connected to the driving rod 42.

[0027] The following is a detailed description of the specific configuration and function of this embodiment. In the clamping process, the second cylinder 32 plays a key role. By controlling the extension and contraction of the second cylinder 32, we can accurately adjust the position of the movable rod 321. The driving force of the movable rod 321 is transmitted to the movable block 37, which in turn drives the first transmission rod 36 to move. In this process, the coordination and linkage between the various components ensure the accuracy and smoothness of the clamping action.

[0028] The movement of the first transmission rod 36 will further affect the second linkage rod 39. When the second linkage rod 39 is acted upon by the first transmission rod 36, it drives the positioning block 34 to move. In this way, the three positioning blocks 34 can approach the workpiece at the same time to complete the clamping and positioning of the workpiece. This design not only ensures the stability of the clamping, but also greatly improves the flexibility of the clamping. By adjusting the expansion and contraction amount of the cylinder and the parameters of the mechanical structure, we can adapt to workpieces of different sizes and shapes and achieve the effect of one machine with multiple uses.

[0029] After the clamping is completed, the first cylinder 2 will play a role. It can accurately control the position of the workpiece according to the instructions of the control body 1 to ensure that the workpiece can be accurately delivered to the next process.

[0030] Embodiment 2

[0031] like Figure 3 and Figure 4As shown, the inner support mechanism 4 includes a connecting sleeve 41 and a fixed frame 43. A driving rod 42 is slidably connected to the inner side of the connecting sleeve 41. One end of the driving rod 42 passes through the connecting sleeve 41 and the fixed frame 43 in sequence, and one end of the driving rod 42 is fixedly connected to a movable frame 46. A second transmission rod 47 is rotatably connected to the outer surface of the movable frame 46, and a third linkage rod 44 is rotatably connected to the inner side of the outer surface of the fixed frame 43. One end of the second transmission rod 47 is rotatably connected to the middle part of the third linkage rod 44, and one end of the third linkage rod 44 is rotatably connected to the inner support block 45. One end of the connecting frame 38 is fixedly connected to the connecting sleeve 41, and one end of the driving rod 42 passes through the connecting frame 38.

[0032] The effect achieved by the entire embodiment is that when the movable rod 321 moves, its comprehensive linkage mechanism is fully reflected. This action not only triggers the movement of the movable block 37, but also cleverly drives the synchronous movement of the driving rod 42 inside the connecting frame 38. Although the driving rod 42, the movable block 37 and the movable rod 321 are all moving, the position of the fixing frame 43 remains unchanged due to the fixed connection relationship between the connecting sleeve 41 and the connecting frame 38, and the stable connection between the connecting frame 38 and the mounting frame 33.

[0033] The movement of the movable frame 46 is precisely controlled, thereby driving the movement of the second transmission rod 47. This action directly affects the position adjustment of the inner support block 45, achieving effective support for the inner side of the workpiece. The coordinated work of the three inner support blocks 45 not only greatly improves the firmness and stability of positioning and grasping, but also ensures the accuracy during loading and unloading, providing a strong guarantee for the smooth progress of the entire production process. The inner support mechanism 4 can support the workpiece from the inside, effectively preventing the workpiece from shifting or deforming during the processing. This method of supporting from the inside not only ensures the stability of the clamping, but also avoids the risk of damaging the workpiece surface due to excessive external clamping force.

[0034] The use method and working principle of the device: When clamping and positioning a hollow workpiece with a circular shape, the inner support mechanism 4 plays a key role and can effectively support the inner side of the workpiece. During the clamping process, the second cylinder 32 controls the movement of the movable rod 321, and the movable rod 321 uses its driving force to drive the movable block 37 to move. The movable block 37 then applies a force to the first transmission rod 36, so that the second linkage rod 39 is subjected to the force from the first transmission rod 36. Through the movement of the second linkage rod 39, the movement of the positioning block 34 can be driven, and the first linkage rod 35 can be used to jointly control one end of the positioning block 34 to approach the workpiece to achieve precise positioning.

[0035] During the clamping and positioning process, the three positioning blocks 34 move simultaneously to coordinately complete the clamping and positioning of the workpiece, thereby realizing automatic clamping. After the clamping is completed, the first cylinder 2 can control the position of the workpiece to ensure that the workpiece can be accurately loaded under the precise control of the control body 1.

[0036] When the movable rod 321 moves, it not only drives the movement of the movable block 37, but also drives the movement of the driving rod 42 inside the connecting frame 38. The movement of the driving rod 42 further drives the movement of the second transmission rod 47. Since the connecting sleeve 41 is fixedly connected to the connecting frame 38, and the connecting frame 38 is connected to the mounting frame 33, the movement of the driving rod 42 does not change the position of the fixed frame 43. In this process, the movement of the movable frame 46 drives the movement of the second transmission rod 47, thereby realizing the control of the inner support block 45. The three inner support blocks 45 work together to support the inner side of the workpiece, which not only improves the firmness of the positioning and grasping, but also ensures the accuracy of loading and unloading.

[0037] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A pneumatic gripper automatic grasping mechanism for round parts, comprising a control body (1), a first cylinder (2) being installed on one side of the bottom end of the control body (1), characterized in that: The output end of the first cylinder (2) is provided with a grabbing mechanism (3), and the inner side of the grabbing mechanism (3) is provided with an inner supporting mechanism (4); The gripping mechanism (3) comprises a shell (31), a mounting frame (33) and a positioning block (34); one end of the mounting frame (33) is fixedly connected to the shell (31); a support block (331) is fixedly connected to the outer surface of the mounting frame (33); a first linkage rod (35) is rotatably connected to the top of the support block (331); a second linkage rod (39) is rotatably connected to the middle of the support block (331); a first transmission rod (36) is rotatably connected to the inner side of the second linkage rod (39); one end of the first linkage rod (35) is rotatably connected to the first transmission rod (36); one end of the second linkage rod (39) is rotatably connected to the first transmission rod (36); a movable block (37) is installed on one side of the mounting frame (33); one end of the first transmission rod (36) is rotatably connected to the movable block (37); and a connecting frame (38) is fixedly connected to the outer surface of the mounting frame (33).

2. The pneumatic gripper automatic grasping mechanism for round parts according to claim 1 is characterized in that: The inner support mechanism (4) comprises a connecting sleeve (41) and a fixing frame (43); a driving rod (42) is slidably connected to the inner side of the connecting sleeve (41); one end of the driving rod (42) passes through the connecting sleeve (41) and the fixing frame (43) in sequence; and one end of the driving rod (42) is fixedly connected to a movable frame (46).

3. The pneumatic gripper automatic grasping mechanism for round parts according to claim 2 is characterized in that: The outer surface of the movable frame (46) is rotatably connected to a second transmission rod (47), and the inner side of the outer surface of the fixed frame (43) is rotatably connected to a third linkage rod (44).

4. The pneumatic gripper automatic grasping mechanism for round parts according to claim 3 is characterized in that: One end of the second transmission rod (47) is rotatably connected to the middle part of the third linkage rod (44), and one end of the third linkage rod (44) is rotatably connected to an inner support block (45).

5. The pneumatic gripper automatic grasping mechanism for round parts according to claim 4 is characterized in that: One end of the connecting frame (38) is fixedly connected to the connecting sleeve (41), and one end of the driving rod (42) passes through the connecting frame (38).

6. The pneumatic gripper automatic grasping mechanism for round parts according to claim 1, characterized in that: A second cylinder (32) is installed inside the housing (31), and a movable rod (321) is fixedly connected to the output end of the second cylinder (32).

7. The pneumatic gripper automatic grasping mechanism for round parts according to claim 6, characterized in that: One end of the movable rod (321) passes through the mounting frame (33), and the middle part of the movable rod (321) is fixedly connected to the movable block (37), and one end of the movable rod (321) is fixedly connected to the driving rod (42).

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