A clamping mechanism based on three-gripper clamping

Abstract

The utility model provides a kind of clamping mechanism based on three grab clamping, including base, lifting support, fixed platform, motor and cylinder, lifting support is movably installed on base, fixed platform is movably installed on the top of lifting support, motor is fixedly installed on fixed platform, cylinder is fixedly installed on fixed platform, a kind of clamping mechanism based on three grab clamping of the utility model, workpiece can be lifted by cylinder and adjusted, then by starting motor drives transmission screw to rotate, and then make connecting bracket move along transmission screw, push movable block to move on guide rail, and by connecting disc drive other two groups of clamping mechanism to move together, workpiece is clamped or loosened, under the pushing of cylinder, lift, facilitate feeding and discharging, prevent workpiece and fixture from colliding and damaging, and facilitate clamping adjustment.

Description

Technical Field

[0001] This utility model relates to the field of clamping mechanism technology, and in particular to a clamping mechanism based on three-grip clamping. Background Technology

[0002] A fixture is a device used in mechanical manufacturing to fix a workpiece in the correct position for operation or inspection; it is also called a clamp. In a broader sense, any device used to quickly, conveniently, and safely install a workpiece at any stage of the manufacturing process can be called a fixture.

[0003] In existing technologies, when clamping a workpiece, the workpiece is often not in the center of the fixture. It needs to be pushed to the center of the fixture by the grippers for clamping. This clamping method is not only difficult to pick up and place for large workpieces, but also difficult to determine the position and orientation of the workpiece to be fixed, and it is also inconvenient for subsequent clamping operations of the driving fixture. Utility Model Content

[0004] The purpose of this invention is to provide a clamping mechanism based on a three-grip gripper in order to solve the above-mentioned problems.

[0005] The technical solution of this utility model is implemented as follows:

[0006] This utility model provides a clamping mechanism based on three-grip gripping, including a base, a lifting bracket, a fixed platform, a motor, and a cylinder. The lifting bracket is movably mounted on the base, the fixed platform is movably mounted above the lifting bracket, the motor is fixedly mounted on the fixed platform, and the cylinder is fixedly mounted on the fixed platform.

[0007] A transmission screw is installed at the output end of the motor, and a connecting bracket is threaded onto the transmission screw. A clamping mechanism is provided on the fixed platform. The clamping mechanism includes a movable block, a clamp, a movable connecting piece, and a guide rail. There are three sets of clamping mechanisms. The transmission screw is fixedly connected to the movable block of one set of clamping mechanisms. The bottom of the movable block has a groove that matches the guide rail, and the movable block is installed on the guide rail through the groove. The clamp is fixedly installed on the movable block and above the movable block. A connecting plate is movably installed on the fixed platform. The connecting plate is located between the three sets of clamping mechanisms. The two ends of the movable connecting piece are movably installed on the movable block and the connecting plate, respectively.

[0008] In the above technical solution, the workpiece can be raised and lowered by a cylinder, and then the starting motor drives the transmission screw to rotate, which in turn causes the connecting bracket to move along the transmission screw, pushing the movable block to move on the guide rail. The connecting plate drives the other two sets of clamping mechanisms to move together to clamp or release the workpiece. The workpiece is raised and lowered under the push of the cylinder, which facilitates loading and unloading, prevents the workpiece from colliding and being damaged by the fixture, and facilitates clamping and adjustment.

[0009] In one embodiment, a hydraulic cylinder is installed on the base, and the output end of the hydraulic cylinder is connected to the lifting bracket. The output end of the hydraulic cylinder drives the lifting bracket to move up and down. In this technical solution, the output end of the hydraulic cylinder pushes the lifting bracket to move, thereby realizing up and down lifting.

[0010] In one embodiment, at least four cylinders are provided and are respectively installed on a fixed platform. In this technical solution, the fixed platform is provided with several fixing screw holes, so that the cylinders can be changed in position as needed, and then the position can be adjusted according to the size of the workpiece or the size of the bracket that fixes the workpiece.

[0011] In one embodiment, the movable connecting piece is connected to the movable block and the connecting plate respectively via a movable shaft. In this technical solution, the movable shaft allows the movable connecting piece to rotate along the movable shaft and be used under the drive of the movable block.

[0012] In one embodiment, the motor has two motors, each equipped with a drive screw, and a connecting bracket is located between the two motors. In this technical solution, by setting two sets of motors and connecting them to the connecting bracket through the drive screws, the clamping stability is improved.

[0013] In one embodiment, one of the clamping mechanisms is connected to the connecting bracket, and the other two clamping mechanisms are respectively located on both sides of the connecting bracket. In this technical solution, after driving one of the clamping mechanisms to move, the other two clamping mechanisms can be driven to move together through the connecting plate and the movable connecting piece to clamp or release the workpiece.

[0014] The advantages or beneficial effects of the above technical solutions include at least the following:

[0015] This utility model discloses a clamping mechanism based on a three-grip clamp. The workpiece can be raised and lowered by a cylinder, and then the starting motor drives the transmission screw to rotate, which in turn causes the connecting bracket to move along the transmission screw, pushing the movable block to move on the guide rail. The connecting plate drives the other two sets of clamping mechanisms to move together to clamp or release the workpiece. The lifting and lowering under the push of the cylinder facilitates loading and unloading, prevents the workpiece from colliding and being damaged by the fixture, and facilitates clamping and adjustment. Attached Figure Description

[0016] The accompanying drawings illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this specification.

[0017] Figure 1A structural schematic diagram of a clamping mechanism based on a three-grip gripper according to this utility model is shown;

[0018] Figure 2 A structural schematic diagram of a clamping mechanism based on a three-grip gripper according to this utility model is shown;

[0019] Figure 3 An enlarged structural schematic diagram of point A of a clamping mechanism based on three-grip gripping according to this utility model is shown;

[0020] Figure 4 A structural schematic diagram of the connecting disk and the movable connecting piece in an embodiment of this utility model is shown;

[0021] Figure 5 A structural schematic diagram of a clamping mechanism based on a three-grip gripper according to this utility model is shown;

[0022] Reference numerals in the attached drawings: base-1, lifting bracket-2, fixed platform-3, motor-4, cylinder-5, clamping mechanism-6, movable block-7, clamp-8, movable connecting piece-9, connecting plate-10, guide rail-11, connecting bracket-12, transmission screw-41. Detailed Implementation

[0023] Embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0024] It should be noted that, where there is no conflict, the embodiments and features described in these embodiments can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] It should be understood that the term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc., mentioned in this utility model are only used to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0026] It should be noted that the terms "a" and "several" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0027] The names of the messages or information exchanged between the multiple devices in this embodiment of the invention are for illustrative purposes only and are not intended to limit the scope of these messages or information.

[0028] Reference Figures 1-5 A clamping mechanism based on three-grip gripping includes a base 1, a lifting bracket 2, a fixed platform 3, a motor 4, and a cylinder 5. The lifting bracket 2 is movably mounted on the base 1, the fixed platform 3 is movably mounted above the lifting bracket 2, the motor 4 is fixedly mounted on the fixed platform 3, and the cylinder 5 is fixedly mounted on the fixed platform 3.

[0029] The output end of the motor 4 is equipped with a transmission screw 41, and a connecting bracket 12 is threaded onto the transmission screw 41. The fixed platform 3 is provided with a clamping mechanism 6, which includes a movable block 7, a clamp 8, a movable connecting piece 9, and a guide rail 11. There are three sets of clamping mechanisms 6. The transmission screw 41 is fixedly connected to the movable block 7 of one set of clamping mechanisms 6. The bottom of the movable block 7 is provided with a groove that matches the guide rail 11, and the movable block 7 is installed on the guide rail 11 through the groove. The clamp 8 is fixedly installed on the movable block 7 and above the movable block 7. A connecting plate 10 is movably installed on the fixed platform 3. The connecting plate 10 is located between the three sets of clamping mechanisms 6. The two ends of the movable connecting piece 9 are movably installed on the movable block 7 and the connecting plate 10, respectively.

[0030] In the above technical solution, the workpiece can be raised and lowered by the cylinder 5, and then the starting motor 4 drives the transmission screw 41 to rotate, thereby causing the connecting bracket 12 to move along the transmission screw 41, pushing the movable block 7 to move on the guide rail 11, and driving the other two sets of clamping mechanisms 6 to move together through the connecting plate 10, clamping or releasing the workpiece. The workpiece is raised and lowered under the push of the cylinder 5, which facilitates loading and unloading, prevents the workpiece from colliding and being damaged by the fixture, and facilitates clamping and adjustment.

[0031] In one embodiment, a hydraulic cylinder is installed on the base 1, and the output end of the hydraulic cylinder is connected to the lifting bracket 2. The lifting bracket 2 is driven to move up and down by the output end of the hydraulic cylinder. In this technical solution, the output end of the hydraulic cylinder pushes the lifting bracket 2 to move, thereby realizing up and down lifting.

[0032] In one embodiment, at least four cylinders 5 are provided and are respectively installed on the fixed platform 3. In this technical solution, the fixed platform 3 is provided with several fixing screw holes, so that the cylinders 5 can be changed in position as needed, and then the position can be adjusted according to the size of the workpiece or the size of the bracket that fixes the workpiece.

[0033] In one embodiment, the movable connecting piece 9 is connected to the movable block 7 and the connecting disk 10 respectively via a movable shaft. In this technical solution, the movable shaft allows the movable connecting piece 9 to rotate along the movable shaft and be used under the drive of the movable block 7.

[0034] In one embodiment, the motor 4 is provided with two transmission screws 41 respectively, and the connecting bracket 12 is provided between the two motors 4. In this technical solution, by setting two sets of motors 4 and connecting them to the connecting bracket 12 through the transmission screws 41, the clamping stability is improved.

[0035] In one embodiment, one of the clamping mechanisms 6 is connected to the connecting bracket 12, and the other two clamping mechanisms 6 are respectively located on both sides of the connecting bracket 12. In this technical solution, after driving one of the clamping mechanisms 6 to move, the other two clamping mechanisms 6 can be driven to move together through the connecting plate 10 and the movable connecting piece 9 to clamp or release the workpiece.

[0036] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0037] Those skilled in the art should understand that the above embodiments are merely for clearly illustrating the present invention and are not intended to limit the scope of the present invention. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present invention.

Claims

1. A clamping mechanism based on three-jaw gripping, characterized in that: It includes a base (1), a lifting bracket (2), a fixed platform (3), a motor (4), and a cylinder (5). The lifting bracket (2) is movably installed on the base (1), the fixed platform (3) is movably installed above the lifting bracket (2), the motor (4) is fixedly installed on the fixed platform (3), and the cylinder (5) is fixedly installed on the fixed platform (3). The output end of the motor (4) is equipped with a transmission screw (41), and a connecting bracket (12) is threaded onto the transmission screw (41). The fixed platform (3) is provided with a clamping mechanism (6), which includes a movable block (7), a clamp (8), a movable connecting piece (9), and a guide rail (11). The clamping mechanism (6) is provided in three sets. The transmission screw (41) is fixedly connected to the movable block (7) of one set of the clamping mechanism (6). The bottom is provided with a groove that matches the guide rail (11), and the movable block (7) is installed on the guide rail (11) through the groove. The clamp (8) is fixedly installed on the movable block (7) and the clamp (8) is fixedly installed above the movable block (7). A connecting plate (10) is movably installed on the fixed platform (3). The connecting plate (10) is located between the three clamping mechanisms (6). The two ends of the movable connecting piece (9) are movably installed on the movable block (7) and the connecting plate (10) respectively.

2. The clamping mechanism based on three-jaw gripping according to claim 1, characterized in that: A hydraulic cylinder is installed on the base (1). The output end of the hydraulic cylinder is connected to the lifting bracket (2). The lifting bracket (2) is driven to move up and down through the output end of the hydraulic cylinder.

3. The clamping mechanism based on three-jaw gripping according to claim 1, characterized in that: The cylinder (5) is provided in at least four parts, which are respectively installed on the fixed platform (3).

4. The clamping mechanism based on three-jaw gripping according to claim 1, characterized in that: The movable connecting piece (9) is connected to the movable block (7) and the connecting plate (10) respectively via a movable shaft.

5. The clamping mechanism based on three-jaw gripping according to claim 1, characterized in that: The motor (4) is provided with two transmission screws (41) respectively, and the connecting bracket (12) is located between the two motors (4).

6. The clamping mechanism based on three-jaw gripping according to claim 5, characterized in that: One of the clamping mechanisms (6) is connected to the connecting bracket (12), and the other two clamping mechanisms (6) are respectively located on both sides of the connecting bracket (12).

Images