Adjustable multifunctional pneumatic claw

Abstract

The utility model discloses an adjustable type multifunctional pneumatic claw which comprises an installation frame, an air cylinder is installed at the top end of the inner side of the installation frame, the bottom end of the air cylinder penetrates through the top end of the inner side of the installation frame and is connected with a columnar moving block, and the bottom end of the columnar moving block penetrates through a through hole in the center of the bottom end of the installation frame and extends to the outside. Clamping jaws are arranged on the two sides of the lower portion of the outer wall of the columnar moving block, a rotating roller is arranged at one end of each clamping jaw, and a stroke adjusting assembly used for adjusting the extending stroke of the air cylinder and adjusting the clamping force of the two clamping jaws to a clamped object is arranged on the rear end wall of the mounting frame. And an end cover is arranged at the bottom end of the columnar moving block. The clamping force of the two clamping jaws on a clamped object can be adjusted by adjusting the extending stroke of the air cylinder, the clamped object can be limited before the clamped object is clamped by the clamping jaws, and the stability of the clamped object clamped by the clamping jaws is improved.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic gripper technology, specifically an adjustable multifunctional pneumatic gripper. Background Technology

[0002] A pneumatic gripper is a gripping element used at the end effector of an industrial robot. It is mainly used to grasp and move objects. It achieves operations such as grasping, holding, moving and placing through pneumatic control, and features high repeatability and fast response.

[0003] A search revealed that patent publication number CN220431512U discloses a rotatable pneumatic gripper, comprising a first gripper, a second gripper, and a rotary driver. The first gripper and the second gripper are arranged side by side and in opposite directions. The rotary driver is located above the first gripper and the second gripper. The rotary driver drives the first gripper and the second gripper to rotate and change positions, thereby enabling the two grippers on the production line to quickly alternate positions using the rotary driver, rapidly transferring products from one area to another, accelerating the gripping speed, thus increasing the production speed and preventing product accumulation.

[0004] When using existing pneumatic grippers to clamp and transfer different objects, it is not easy for operators to adjust the clamping force applied by the grippers. Due to the characteristics of different objects, different clamping forces are required when clamping different objects. If the clamping force applied to the object is too small, the object may slip off the gripper. If the clamping force applied to the object is too large, the object may be damaged. Therefore, an adjustable multi-functional pneumatic gripper is designed. Utility Model Content

[0005] In view of the defects or deficiencies of existing pneumatic grippers, the purpose of this utility model is to provide an adjustable multi-functional pneumatic gripper. It can not only adjust the clamping force of the two grippers on the object by adjusting the stroke of the cylinder, but also limit the object before the grippers clamp it, thereby improving the stability of the gripper when clamping the object.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0007] This utility model provides an adjustable multi-functional pneumatic gripper, including a mounting frame. A cylinder is mounted on the inner top of the mounting frame. The bottom end of the cylinder passes through the inner top of the mounting frame and is connected to a columnar moving block. The bottom end of the columnar moving block passes through a through hole at the center of the bottom end of the mounting frame and extends to the outside. Grippers are provided on both sides of the lower outer wall of the columnar moving block. A rotating roller is provided at one end of each gripper. A stroke adjustment component is provided on the rear end wall of the mounting frame for adjusting the extension stroke of the cylinder and for adjusting the clamping force of the two grippers on the object being gripped.

[0008] The bottom end of the columnar movable block is provided with an end cap, and an installation groove is opened at the center of the bottom end of the columnar movable block. An extrusion plate is provided inside the installation groove. A limit post is installed at the bottom of the extrusion plate. The bottom end of the limit post passes through a through hole at the center of the end cap surface and extends to the outside. A spring is provided between the upper surface of the extrusion plate and the top of the inside of the installation groove. A contact block is provided on the upper side of the circumferential outer wall of the columnar movable block. An inclined part is provided on the circumferential outer wall of the columnar movable block.

[0009] Preferably, the rotating roller is located in a U-shaped groove, and the U-shaped groove is opened at one end of the gripper. The connecting shafts on the end walls of the two ends of the rotating roller are respectively set in the bearings on the two sides of the groove wall of the U-shaped groove.

[0010] Preferably, the gripper is disposed between two T-shaped connecting plates, and the T-shaped connecting plates and the gripper are movably connected by a movable pin, and the two T-shaped connecting plates are respectively disposed on the front end wall and the rear end wall of the mounting frame.

[0011] Preferably, the outer circumferential wall of the extrusion plate and the inner circumferential wall of the mounting groove are in clearance fit, and the outer circumferential wall of the limiting post and the inner circumferential wall of the through hole on the end cap are in clearance fit.

[0012] Preferably, the stroke adjustment assembly is composed of a rotating shaft, a movable plate, a U-shaped mounting plate, a limit groove, a limit switch, a mounting block assembly, and a rotary adjustment plate. The U-shaped mounting plate is disposed on the rear end wall of the mounting frame, and a rotating shaft is disposed on the inner side of the U-shaped mounting plate. The two ends of the rotating shaft pass through bearings on the top and bottom ends of the U-shaped mounting plate and are connected to the rotary adjustment plate.

[0013] Preferably, a movable plate is provided on the outer wall of the rotating shaft, and a threaded hole is provided on the end wall of the movable plate. An external thread is provided on the circumferential outer wall of the rotating shaft, and the external thread on the circumferential outer wall of the rotating shaft and the threaded hole on the movable plate are connected by a threaded engagement.

[0014] Preferably, the front wall of the movable plate is equipped with an installation block, the other end of the installation block passes through the limiting groove, and the outer wall of the installation block and the groove wall of the limiting groove are in clearance fit. A limit switch is provided on the top of the installation block, and the limit switch is located directly below the touch block.

[0015] Compared with existing technologies, one or more of the above technical solutions have the following beneficial effects:

[0016] 1. In this utility model, through a series of coordinated structural arrangements, when the cylinder extends, it drives the cylindrical moving block to move downward. When the cylindrical moving block moves downward, it causes the two grippers to close and clamp the object. When the cylinder retracts, it drives the cylindrical moving block to move upward. When the cylindrical moving block moves upward, it causes the two grippers to open and release the clamped object. When the operator rotates the rotary adjustment plate on the stroke adjustment component clockwise or counterclockwise, it indirectly causes the limit switch to move linearly in a certain direction. When the limit switch moves linearly in a certain direction, the distance between the limit switch and the touch plate can be adjusted. By adjusting the distance between the touch plate and the limit switch, the operator can adjust the extension stroke of the cylinder. Thus, this utility model can adjust the clamping force of the two grippers on the clamped object by adjusting the extension stroke of the cylinder.

[0017] 2. In this utility model, through the coordinated arrangement of a series of structures such as limiting posts, compression plates, and springs, when this utility model performs a clamping operation on an object, the limiting posts will first contact the object being clamped. When this utility model continues to clamp the object, the limiting posts compress the springs. Under the action of the spring's compression and rebound force, the limiting posts will exert a limiting force on the object being clamped in a certain direction. Thus, this utility model can limit the object being clamped before the grippers clamp it, improving the stability of the grippers when clamping the object. Attached Figure Description

[0018] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model. Figure 1 .

[0020] Figure 2 This is a schematic diagram of the overall three-dimensional structure of this utility model. Figure 2 .

[0021] Figure 3 This is a schematic diagram of the stroke adjustment component of this utility model.

[0022] Figure 4 This is a schematic diagram of the structure of the columnar moving block of this utility model.

[0023] In the picture:

[0024] 100. Mounting bracket;

[0025] 200. Cylinder;

[0026] 300. Columnar moving block; 310. Contact block; 320. Inclined part; 330. Spring; 340. End cap; 350. Mounting groove; 360. Extrusion plate; 370. Limiting post;

[0027] 400, T-type connecting plate;

[0028] 500, rotating roller;

[0029] 600. Gripper;

[0030] 700, Stroke adjustment assembly; 710, Rotary shaft; 720, Moving plate; 730, U-shaped mounting plate; 740, Limit groove; 750, Limit switch; 760, Mounting block; 770, Rotary adjustment plate. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0032] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0033] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0034] like Figure 1-4As shown, an adjustable multi-functional pneumatic gripper includes a mounting frame 100. A cylinder 200 is mounted on the inner top of the mounting frame 100. The bottom end of the cylinder 200 passes through the inner top of the mounting frame 100 and is connected to a columnar moving block 300. The bottom end of the columnar moving block 300 passes through a through hole at the center of the bottom of the mounting frame 100 and extends to the outside. Grippers 600 are provided on both sides of the lower part of the outer wall of the columnar moving block 300. A rotating roller 500 is provided at one end of each gripper 600. A stroke adjustment component 700 is provided on the rear end wall of the mounting frame 100 for adjusting the stroke of the cylinder 200 and for adjusting the clamping force of the two grippers 600 on the object being gripped.

[0035] An end cap 340 is provided at the bottom end of the columnar movable block 300. A mounting groove 350 is formed at the center of the bottom end of the columnar movable block 300. An extrusion plate 360 ​​is disposed inside the mounting groove 350. A limit post 370 is installed at the bottom of the extrusion plate 360. The bottom end of the limit post 370 penetrates a through hole at the center of the surface of the end cap 340 and extends to the outside. A spring 330 is disposed between the upper surface of the extrusion plate 360 ​​and the top end of the mounting groove 350. The outer circumferential wall of the columnar movable block 300... A contact block 310 is provided on the upper side, and an inclined part 320 is provided on the circumferential outer wall of the columnar moving block 300. When the columnar moving block 300 moves downward, the inclined part 320 on the columnar moving block 300 will exert a certain force on the rotating roller 500 and cause the rotating roller 500 to move outward. When the rotating roller 500 moves outward, it will cause the other end of the gripper 600 to move inward, thereby realizing the two grippers 600 to perform a closing motion and clamp the object.

[0036] The roller 500 is located in the U-shaped groove, and the U-shaped groove is opened at one end of the gripper 600. The connecting shafts on the end walls of the roller 500 are respectively set in the bearings on the two sides of the groove wall of the U-shaped groove.

[0037] The gripper 600 is disposed between two T-shaped connecting plates 400. The T-shaped connecting plates 400 and the gripper 600 are movably connected by a movable pin. The two T-shaped connecting plates 400 are respectively disposed on the front wall and the rear wall of the mounting bracket 100.

[0038] The outer circumferential wall of the extrusion plate 360 ​​and the inner circumferential wall of the mounting groove 350 are in clearance fit. This clearance fit helps to limit and guide the movement of the extrusion plate 360. Similarly, the outer circumferential wall of the limiting post 370 and the inner circumferential wall of the through hole on the end cap 340 are in clearance fit. This clearance fit also helps to limit and guide the movement of the limiting post 370.

[0039] The stroke adjustment assembly 700 is composed of a rotating shaft 710, a movable plate 720, a U-shaped mounting plate 730, a limit groove 740, a limit switch 750, a mounting block 760, and a rotary adjustment plate 770. The U-shaped mounting plate 730 is set on the rear end wall of the mounting frame 100. The rotating shaft 710 is set on the inner side of the U-shaped mounting plate 730. The two ends of the rotating shaft 710 pass through the bearings on the top and bottom ends of the U-shaped mounting plate 730 and are connected to the rotary adjustment plate 770.

[0040] A movable plate 720 is provided on the outer wall of the rotating shaft 710. The end wall of the movable plate 720 is provided with a threaded hole. The circumferential outer wall of the rotating shaft 710 is provided with an external thread. The external thread on the circumferential outer wall of the rotating shaft 710 and the threaded hole on the movable plate 720 are connected by a threaded engagement.

[0041] A mounting block 760 is installed on the front wall of the movable plate 720. The other end of the mounting block 760 passes through the limiting groove 740, and the outer wall of the mounting block 760 and the groove wall of the limiting groove 740 are in clearance fit. A limit switch 750 is provided on the top of the mounting block 760, and the limit switch 750 is located directly below the contact block 310. Because the outer wall of the mounting block 760 and the groove wall of the limiting groove 740 are in clearance fit, the movement of the mounting block 760 and the movable plate 720 can be limited and guided.

[0042] Working principle: During use, when cylinder 200 extends, it drives the cylindrical moving block 300 to move downwards. This downward movement causes the two grippers 600 to close and clamp the object. When cylinder 200 retracts, it drives the cylindrical moving block 300 to move upwards. This upward movement causes the two grippers 600 to open and release the clamped object. When the operator rotates the rotary adjusting plate 770 on the stroke adjusting component 700 clockwise or counterclockwise, it indirectly causes the limit switch 750 to move linearly in a certain direction. This linear movement of the limit switch 750 adjusts the distance between the limit switch 750 and the contact plate. The operator can adjust the extension stroke of the cylinder 200 by adjusting the distance between the touch plate and the limit switch 750. Thus, this invention can adjust the clamping force of the two grippers 600 on the object by adjusting the extension stroke of the cylinder 200. When clamping the object, the limiting post 370 will first contact the object. When the invention continues to clamp the object, the limiting post 370 compresses the spring 330. Under the action of the spring 330's compression and rebound force, the limiting post 370 will exert a limiting force on the object in a certain direction. Thus, this invention can limit the object before the grippers 600 clamp it, improving the stability of the grippers 600 when clamping the object.

[0043] The above description is merely a preferred embodiment of this utility model and is not intended to limit the invention. For those skilled in the art, various modifications and variations can be made to this invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the protection scope of this invention.

Claims

1. An adjustable multi-functional pneumatic gripper, comprising a mounting bracket (100), characterized in that: A cylinder (200) is installed on the inner top of the mounting frame (100). The bottom end of the cylinder (200) passes through the inner top of the mounting frame (100) and is connected to the columnar moving block (300). The bottom end of the columnar moving block (300) passes through the through hole at the center of the bottom end of the mounting frame (100) and extends to the outside. Grippers (600) are provided on both sides of the lower part of the outer wall of the columnar moving block (300). A rotating roller (500) is provided at one end of the gripper (600). A stroke adjustment component (700) is provided on the rear end wall of the mounting frame (100) for adjusting the stroke of the cylinder (200) and for adjusting the clamping force of the two grippers (600) on the clamped object. The bottom end of the columnar moving block (300) is provided with an end cap (340). An installation groove (350) is provided at the center of the bottom end of the columnar moving block (300). An extrusion plate (360) is provided inside the installation groove (350). A limit post (370) is installed at the bottom of the extrusion plate (360). The bottom end of the limit post (370) passes through the through hole at the center of the surface of the end cap (340) and extends to the outside. A spring (330) is provided between the upper surface of the extrusion plate (360) and the top end of the installation groove (350). A contact block (310) is provided on the upper side of the circumferential outer wall of the columnar moving block (300). An inclined part (320) is provided on the circumferential outer wall of the columnar moving block (300).

2. The adjustable multi-functional pneumatic gripper according to claim 1, characterized in that: The rotating roller (500) is located in the U-shaped groove, and the U-shaped groove is opened at one end of the gripper (600). The connecting shafts on the end walls of the two ends of the rotating roller (500) are respectively set in the bearings on the two sides of the groove wall of the U-shaped groove.

3. The adjustable multi-functional pneumatic gripper according to claim 1, characterized in that: The gripper (600) is disposed between two T-shaped connecting plates (400), and the T-shaped connecting plates (400) and the gripper (600) are movably connected by a movable pin. The two T-shaped connecting plates (400) are respectively disposed on the front wall and the rear wall of the mounting frame (100).

4. The adjustable multi-functional pneumatic gripper according to claim 1, characterized in that: The outer circumferential wall of the extrusion plate (360) and the inner circumferential wall of the mounting groove (350) are in clearance fit, and the outer circumferential wall of the limiting post (370) and the inner circumferential wall of the through hole on the end cap (340) are in clearance fit.

5. The adjustable multi-functional pneumatic gripper according to claim 1, characterized in that: The stroke adjustment assembly (700) is composed of a rotating shaft (710), a movable plate (720), a U-shaped mounting plate (730), a limit groove (740), a limit switch (750), a mounting block (760), and a rotating adjustment plate (770). The U-shaped mounting plate (730) is set on the rear end wall of the mounting frame (100). The rotating shaft (710) is provided on the inner side of the U-shaped mounting plate (730). The two ends of the rotating shaft (710) pass through the bearings on the top and bottom ends of the U-shaped mounting plate (730) and are connected to the rotating adjustment plate (770).

6. The adjustable multi-functional pneumatic gripper according to claim 5, characterized in that: A movable plate (720) is provided on the outer wall of the rotating shaft (710). A threaded hole is provided on the end wall of the movable plate (720). An external thread is provided on the circumferential outer wall of the rotating shaft (710). The external thread on the circumferential outer wall of the rotating shaft (710) and the threaded hole on the movable plate (720) are connected by a threaded fit.

7. The adjustable multi-functional pneumatic gripper according to claim 6, characterized in that: The front wall of the movable plate (720) is equipped with an installation block (760), the other end of the installation block (760) passes through the limiting groove (740), and the outer wall of the installation block (760) and the groove wall of the limiting groove (740) are in clearance fit. The top of the installation block (760) is provided with a limit switch (750), and the limit switch (750) is located directly below the touch block (310).

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