Adjustable pneumatic clamp

Abstract

The utility model relates to the technical field of clamps, in particular to an adjustable pneumatic clamp. The adjustable pneumatic clamp is simple in structure and convenient to operate. The device comprises a connecting base, a guide rail, an air cylinder, a clamping arm, an adjusting assembly and the like, the guide rail is sleeved with the clamping arm in a sliding mode, a telescopic rod of the air cylinder is connected with the upper portion of the clamping arm, and the adjusting assembly used for adjusting the clamping angle of the clamping arm is arranged between the connecting base and the guide rail. The telescopic rod on the air cylinder is extended or shortened by independently or simultaneously controlling the air cylinder, so that the clamping arm can be driven to move along the guide rail to adjust the position, and the inner sides or the outer sides of objects with different sizes can be clamped and fixed; and a servo motor is controlled to drive a lead screw to rotate, so that a nut sleeve can be driven to move and adjust the position, an adjusting arm can push a hinge seat and a guide rail to swing, and the aim of conveniently adjusting the clamping angle of the clamping arm is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of jigs, in particular to an adjustable pneumatic jig. Background Art

[0002] Adjustable pneumatic jigs are usually integrated with an automated control system, capable of quickly and precisely clamping and releasing workpieces, thus contributing to shortening the production cycle. Especially on an automated production line, adjustable pneumatic jigs can cooperate with robots or other automated equipment, which is conducive to achieving a continuous and uninterrupted production process and is more conducive to improving production efficiency.

[0003] A utility model patent for an adjustable pneumatic three-jaw jig was publicly disclosed on the Chinese Patent Network, with the authorization announcement number CN220613676U. This patent uses a cylinder and multiple sets of connecting rods in cooperation. Although it can adjust the clamping angle of the jaws on the jig, during actual use, due to the large number of connecting rods in each group, the overall appearance is rather complicated, which is likely to cause the operator to be dazzled during actual operation, and thus there is a problem of inconvenient operation, bringing unnecessary trouble to the operator.

[0004] Therefore, a simple-structured and easy-to-operate adjustable pneumatic jig is specifically proposed to solve the above technical problems. Summary of the Utility Model

[0005] In order to overcome the disadvantage that the existing pneumatic jig is cumbersome and inconvenient to operate when adjusting the clamping angle during actual use, the technical problem of the utility model is: to provide an adjustable pneumatic jig with a simple structure and easy to operate.

[0006] An adjustable pneumatic jig includes a connecting seat, a guide rail, a short shaft, a cylinder, and a clamping arm. The connecting seat is circumferentially and spacedly provided with notches, and circular holes are symmetrically arranged in the notches. A guide rail is hinged between two corresponding circular holes through a short shaft, and a cylinder is installed at the outer end of the guide rail. A clamping arm is slidably sleeved on the guide rail, and the telescopic rod of the cylinder is connected to the upper part of the clamping arm. It also includes an adjusting component. An adjusting component for adjusting the clamping angle of the clamping arm is arranged between the connecting seat and the guide rail. The adjusting component includes a guide rod, a nut sleeve, a guide sleeve, an adjusting arm, a hinge seat, a guide seat, and a driving member. The upper end of the connecting seat is circumferentially and spacedly provided with guide rods. A nut sleeve is slidably sleeved on the guide rods through guide sleeves. A guide seat is arranged on the upper side of each guide rail. A hinge seat is slidably connected to the guide seat, and an adjusting arm is hinged between the hinge seat and the outer side of the nut sleeve through a connecting shaft. A driving member for pushing the nut sleeve to move and adjust is connected between the connecting seat and the guide rod.

[0007] Further, the driving member includes a connecting sleeve, a servo motor, and a lead screw. The upper end of the guide rod is connected to the connecting sleeve, the servo motor is installed in the connecting sleeve, the output shaft of the servo motor is connected to the lead screw, the lower end of the lead screw is rotatably connected to the connecting seat, and the nut sleeve is threadedly sleeved on the lead screw.

[0008] Further, the lower side of the hinge seat is slidably connected to the guide seat through a protrusion.

[0009] Further, clamping grooves are arranged at intervals on the inner side of the clamping arm.

[0010] Further, an elastic block is further included, and elastic blocks are arranged at intervals on the side of the clamping arm opposite to the clamping groove.

[0011] Further, a mounting seat is further included, and mounting seats are arranged at intervals along the circumference on the outer side of the connecting sleeve.

[0012] The beneficial effects of the present utility model are as follows: By controlling the cylinder alone or simultaneously to make the telescopic rod on it extend or shorten, the clamping arm can be driven to move along the guide rail to adjust the position, which is beneficial to clamping and fixing the inner or outer sides of objects of different sizes; and by controlling the servo motor to drive the lead screw to rotate, the nut sleeve can be driven to move and adjust the position, so that the adjusting arm can push the hinge seat and the guide rail to swing, which is beneficial to conveniently adjusting the clamping angle of the clamping arm. Moreover, the structure of this device is simple and it is flexible and convenient to use. Description of the Drawings

[0013] Figure 1 is a three-dimensional structural diagram of the present utility model;

[0014] Figure 2 is a top view of the present utility model;

[0015] Figure 3 is a bottom view of the present utility model;

[0016] Figure 4 is a partial cross-sectional view of the present utility model;

[0017] Figure 5 is a separated structural diagram of the present utility model.

[0018] Reference numerals: 1, connecting seat; 2, notch; 3, round hole; 4, guide rail; 5, short shaft; 6, cylinder; 7, clamping arm; 8, clamping groove; 9, elastic block; 10, guide rod; 11, connecting sleeve; 12, servo motor; 13, lead screw; 14, nut sleeve; 15, guide sleeve; 16, adjusting arm; 17, hinge seat; 18, guide seat; 19, protrusion; 20, mounting seat. Detailed Embodiment

[0019] Embodiment: An adjustable pneumatic fixture provided by the present utility model is shown in Figures 1 - 5 as follows. It includes a connecting seat 1, a guide rail 4, a short shaft 5, a cylinder 6, a clamping arm 7 and an adjusting assembly. The connecting seat 1 is circumferentially and spacedly provided with notches 2. Symmetrically arranged circular holes 3 are provided in the notches 2. A guide rail 4 is hingedly connected between two corresponding circular holes 3 through a short shaft 5. A cylinder 6 is installed at the outer end of the guide rail 4. A clamping arm 7 is slidably sleeved on the guide rail 4. The telescopic rod of the cylinder 6 is connected to the upper part of the clamping arm 7. An adjusting assembly is arranged between the connecting seat 1 and the guide rail 4. The adjusting assembly includes a guide rod 10, a nut sleeve 14, a guide sleeve 15, an adjusting arm 16, a hinge seat 17, a guide seat 18 and a driving member. The upper end of the connecting seat 1 is circumferentially and spacedly provided with guide rods 10. The nut sleeve 14 is slidably sleeved on the guide rods 10 through the guide sleeve 15. A guide seat 18 is arranged on the upper side of each guide rail 4. A hinge seat 17 is slidably connected to the guide seat 18. An adjusting arm 16 is hingedly connected between the hinge seat 17 and the outer side of the nut sleeve 14 through a connecting shaft. The lower side of the hinge seat 17 is slidably connected to the guide seat 18 through a protrusion 19. Through the sliding fit between the protrusion 19 and the guide seat 18, it is beneficial to stably guide the hinge seat 17. When controlling the adjusting arms 16 to close to each other, the outer wall of the object can be clamped and fixed. When controlling the adjusting arms 16 to open to each other, the inner wall of the object can be tightened and fixed. It is flexible and convenient to use and is beneficial to be applicable to different scenarios. A driving member is connected between the connecting seat 1 and the guide rod 10. Through the driving member, the nut sleeve 14 can be pushed to move up or down to adjust the position.

[0020] Furthermore, as Figures 1 - 5 shown, the driving member includes a connecting sleeve 11, a servo motor 12 and a lead screw 13. The upper end of the guide rod 10 is connected with the connecting sleeve 11. The servo motor 12 is installed in the connecting sleeve 11. The output shaft of the servo motor 12 is connected with the lead screw 13. The lower end of the lead screw 13 is rotatably connected to the connecting seat 1. The nut sleeve 14 is threadedly sleeved on the lead screw 13. By controlling the forward or reverse rotation of the servo motor 12, the nut sleeve 14 thereon can be driven to move up or down to adjust the height. The structure is simple and the use is convenient.

[0021] Furthermore, as Figure 1 、 Figure 4 and Figure 5 shown, the inner side of the clamping arm 7 is spacedly provided with clamping grooves 8, which is beneficial to increase the friction coefficient with the outer wall of the object, and thus is beneficial to firmly clamp the object.

[0022] Furthermore, as Figure 1 、 Figure 3 、 Figure 4 and Figure 5As shown, it further includes an elastic block 9. The elastic block 9 is arranged at intervals on the side of the clamping arm 7 opposite to the clamping groove 8. The elastic block 9 is an elastic rubber block, which is beneficial to tightly support and limit the inner wall of the object, and is flexible and convenient to use.

[0023] In addition, as Figure 1 , Figure 2 , Figure 4 and Figure 5 shown, it further includes a mounting seat 20. The mounting seats 20 are arranged at intervals along the circumferential direction on the outer side of the connecting sleeve 11, which is beneficial to flexibly assemble this fixture on the corresponding equipment for use.

[0024] During use, the corresponding cylinder 6 can be controlled individually or simultaneously to make the telescopic rod on it extend or shorten, which can drive the clamping arm 7 to move along the guide rail 4 to adjust the position. Furthermore, it is beneficial to conveniently clamp and stabilize objects of different shapes and sizes. And when it is necessary to adjust the clamping angle of the clamping arm 7, only need to control the servo motor 12 to rotate forward or reverse. Then, under the guiding action of the guide rod 10, the screw rod 13 drives the nut sleeve 14 to move up or down to adjust the position, so that the adjusting arm 16 can push the hinge seat 17 to move along the guiding seat 18 to adjust. Furthermore, the guide rail 4 can drive the cylinder 6 and the clamping arm 7 on it to swing up or down with the short axis 5 as the axis. In this way, it is beneficial to achieve the purpose of conveniently adjusting the clamping angle of the clamping arm 7, and further beneficial to be applicable to different usage scenarios, with a wide range of usage.

[0025] Those skilled in the art of this industry should understand that the above embodiments do not limit the present utility model in any form. Any technical solutions obtained by using equivalent replacements or equivalent transformations fall within the protection scope of the present utility model.

Claims

1. An adjustable pneumatic clamp, comprising a connecting seat (1), a guide rail (4), a short shaft (5), a cylinder (6) and a clamping arm (7), wherein the connecting seat (1) is provided with slots (2) spaced apart in the circumferential direction, wherein circular holes (3) are symmetrically provided in the slots (2), wherein two corresponding circular holes (3) are hingedly connected with a guide rail (4) via a short shaft (5), and a cylinder (6) is installed at the outer end of the guide rail (4), a clamping arm (7) is slidably sleeved on the guide rail (4), and a telescopic rod of the cylinder (6) is connected to the upper part of the clamping arm (7), characterized in that: The invention also comprises an adjustment component, wherein an adjustment component for adjusting the clamping angle of the clamping arm (7) is arranged between the connecting seat (1) and the guide rail (4), and the adjustment component comprises a guide rod (10), a nut sleeve (14), a guide sleeve (15), an adjustment arm (16), a hinge seat (17), a guide seat (18) and a driving member, wherein guide rods (10) are arranged at intervals along the circumferential direction on the upper end of the connecting seat (1), a nut sleeve (14) is slidably sleeved on the guide rod (10) through the guide sleeve (15), a guide seat (18) is arranged on the upper side of each of the guide rails (4), an hinge seat (17) is slidably connected to the guide seat (18), and an adjustment arm (16) is hingedly connected between the hinge seat (17) and the outer side of the nut sleeve (14) through a connecting shaft, and a driving member for pushing the nut sleeve (14) to move and adjust is connected between the connecting seat (1) and the guide rod (10).

2. An adjustable pneumatic clamp as claimed in claim 1, characterized in that: The driving member comprises a connecting sleeve (11), a servo motor (12) and a screw rod (13); the upper end of the guide rod (10) is connected to the connecting sleeve (11); the servo motor (12) is installed in the connecting sleeve (11); the output shaft of the servo motor (12) is connected to the screw rod (13); the lower end of the screw rod (13) is rotatably connected to the connecting seat (1); and the nut sleeve (14) is threadedly sleeved on the screw rod (13).

3. An adjustable pneumatic clamp as claimed in claim 1, characterized in that: The lower side of the hinged seat (17) is slidably connected to the guide seat (18) via a protrusion (19).

4. An adjustable pneumatic clamp as claimed in claim 1, characterized in that: The inner side of the clamping arm (7) is provided with a clamping groove (8) at intervals.

5. An adjustable pneumatic clamp as claimed in claim 4, characterized in that: It also comprises an elastic block (9), which is spaced apart and arranged on a side of the clamping arm (7) opposite to the clamping slot (8).

6. An adjustable pneumatic clamp as claimed in claim 2, characterized in that: It also includes a mounting seat (20), and the mounting seats (20) are arranged at intervals along the circumferential direction on the outer side of the connecting sleeve (11).

Images