Adjustable workpiece clamping device

Abstract

The utility model provides an adjustable workpiece clamping device, which relates to the technical field of workpiece clamping and comprises a mounting support, a motor mounting plate and a lead screw mounting plate are sequentially arranged on the mounting support from top to bottom, and a positive and negative rotation motor is mounted on the motor mounting plate. A two-way threaded screw rod is rotationally connected between the motor mounting plate and the screw rod mounting plate, the two-way threaded screw rod is connected with the output end of a forward and reverse rotation motor through a preset through hole, and the positions, opposite to thread lines, of the two ends of the two-way threaded screw rod are each in threaded connection with a movable block; the sides, close to the mounting support, of the two moving blocks are each connected with a connecting rod, and the ends, away from the moving blocks, of the two connecting rods are each fixedly provided with a clamping part. According to the clamping device, the forward and reverse rotation motor drives the bidirectional threaded lead screw to rotate, the two moving blocks move in the opposite direction or the back direction, the movement is transmitted to the upper clamping part and the lower clamping part which are opposite through the two connecting rods, the clamping parts can be close to each other or away from each other, and therefore a workpiece is effectively fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of workpiece clamping, in particular to an adjustable workpiece clamping device. Background Art

[0002] The adjustable workpiece clamping device is a device used to clamp workpieces in industrial production. It is widely used in mechanical processing, automated production lines, assembly lines and other fields. It can effectively fix workpieces and ensure processing accuracy and production efficiency. It plays an important role in industrial production and provides a stable and reliable workpiece clamping solution for the production process.

[0003] After searching, an adjustable workpiece clamping device disclosed in the existing patent publication number CN108515475B includes a guide rail fixing plate and a cam turntable. The cam turntable is arranged on the guide rail fixing plate and rotates through a central axis. Three "T"-slot guide rails are arranged between the guide rail fixing plate and the cam turntable. The three "T"-slot guide rails are evenly distributed in the circumferential direction at the center of the guide rail fixing plate.

[0004] However, the utility model has a defect in actual use, that is, the workpiece cannot be rotated at the same time after the workpiece is clamped, which means that the operator cannot adjust the angle of the workpiece after the workpiece is fixed, making the operation inconvenient. Utility Model Content

[0005] The technical solution of the utility model is aimed at the existing technology that solves too single technical problems, and provides a solution that is significantly different from the existing technology. In order to overcome the above defects of the existing technology, the utility model provides a new solution to solve the problems raised in the above background technology.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an adjustable workpiece clamping device, comprising a mounting bracket, the mounting bracket is provided with a motor mounting plate and a screw mounting plate in sequence from top to bottom, the motor mounting plate is equipped with a forward and reverse motor, a bidirectional threaded screw is rotatably connected between the motor mounting plate and the screw mounting plate, the bidirectional threaded screw is connected to the output end of the forward and reverse motor through a preset through hole, a moving block is threadedly connected at opposite ends of the thread patterns of the two ends of the bidirectional threaded screw, the two moving blocks are connected to a connecting rod on the side close to the mounting bracket, the two connecting rods are fixed with a clamping part on the end away from the moving block, a cylinder is provided on the inner bottom surface of the clamping part, the cylinder output end is connected with a push plate, the push plate is provided with a roller mounting frame on the side away from the cylinder, and a roller is rotatably connected to the roller mounting frame.

[0007] Optionally, the two moving blocks are installed opposite to each other.

[0008] Optionally, a guide rail is further provided on the inner wall of the clamping portion, a slider is slidably connected to the guide rail, and the slider is installed between the push plate and the roller mounting frame.

[0009] Optionally, the surface of the roller is covered with a layer of anti-skid pad.

[0010] Optionally, a notch is provided on a side of the clamping portion close to the roller, and fixed claw blocks are provided at both ends of the notch.

[0011] Optionally, a vertical guide groove is formed on the mounting bracket corresponding to two connecting rods.

[0012] Optionally, bearings are embedded in the motor mounting plate and the screw mounting plate, and the bidirectional threaded screw is installed in the bearings.

[0013] Optionally, the mounting bracket is fixed to the lower base.

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

[0015] In the utility model, the two moving blocks are driven to rotate by the forward and reverse motors to realize the movement of the two moving blocks towards or away from each other. This movement is transmitted to the upper and lower opposite clamping parts through two connecting rods, so that they can approach or move away from each other, thereby effectively fixing the workpiece. When the workpiece is in a fixed state and needs to be rotated, the cylinder drives the roller to rise and fine-tune the positions of the two clamping parts at the same time, so that the locking part is transferred from the original fixed claw block to the roller. At this time, although the roller is on the periphery, it can effectively prevent the workpiece from slipping and ensure that the workpiece is stable and does not shake during rotation. Therefore, by rotating the roller, the workpiece can realize smooth rotation in the fixed claw block. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional diagram of an adjustable workpiece clamping device provided by the utility model;

[0017] Figure 2 A three-dimensional diagram of an adjustable workpiece clamping device provided by the utility model;

[0018] Figure 3 The utility model provides a cross-sectional schematic diagram of the clamping part structure of an adjustable workpiece clamping device.

[0019] Legend:

[0020] 1. Mounting bracket; 2. Base; 3. Motor mounting plate; 4. Screw mounting plate; 5. Forward and reverse motor; 6. Bidirectional threaded screw; 7. Moving block; 8. Guide groove; 9. Connecting rod; 10. Bearing; 11. Clamping part; 12. Fixed claw block; 13. Cylinder; 14. Push plate; 15. Slider; 16. Guide rail; 17. Roller mounting frame; 18. Roller; 19. Anti-slip pad. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example

[0023] like Figure 1 , Figure 2 and Figure 3 As shown, the utility model provides a technical solution: an adjustable workpiece clamping device, including a mounting bracket 1, the mounting bracket 1 is provided with a motor mounting plate 3 and a screw mounting plate 4 from top to bottom, a forward and reverse motor 5 is installed on the motor mounting plate 3, a bidirectional threaded screw 6 is rotatably connected between the motor mounting plate 3 and the screw mounting plate 4, the bidirectional threaded screw 6 is connected to the output end of the forward and reverse motor 5 through a preset through hole, a moving block 7 is threadedly connected at opposite ends of the thread patterns of the two ends of the bidirectional threaded screw 6, a connecting rod 9 is connected to the side of the two moving blocks 7 close to the mounting bracket 1, a clamping part 11 is fixed to the end of the two connecting rods 9 away from the moving block 7, a cylinder 13 is provided on the bottom surface of the inner part of the clamping part 11, a push plate 14 is connected to the output end of the cylinder 13, a roller mounting frame 17 is provided on the side of the push plate 14 away from the cylinder 13, a roller 18 is rotatably connected to the roller mounting frame 17, and the two moving blocks 7 are installed opposite to each other.

[0024] In this embodiment, the bidirectional threaded screw 6 is driven to rotate by the forward and reverse motor 5 to realize the toward or away movement of the two moving blocks 7. This movement is transmitted to the upper and lower opposite clamping parts 11 through the two connecting rods 9, so that they can approach or move away from each other, thereby effectively fixing the workpiece. When the workpiece is in a fixed state and needs to be rotated, the cylinder 13 drives the roller 18 to rise, and at the same time fine-tunes the positions of the two clamping parts 11, so that the locking part is changed from the original fixed claw block 12 to the roller 18. At this time, although the roller 18 is on the periphery, it can effectively prevent the workpiece from slipping, ensuring that the workpiece is stable and does not shake during rotation. Therefore, by rotating the roller 18, the workpiece can be smoothly rotated in the fixed claw block 12.

[0025] A guide rail 16 is also provided on the inner wall of the clamping part 11, and a slider 15 is slidably connected to the guide rail 16. The slider 15 is installed between the push plate 14 and the roller mounting frame 17. The surface of the roller 18 is covered with a layer of anti-slip pad 19. A notch is provided on the side of the clamping part 11 close to the roller 18, and fixed claw blocks 12 are installed at both ends of the notch.

[0026] In this embodiment, the design of the guide rail 16 and the slider 15 makes the rising and clamping movement of the roller 18 more stable and reliable, and the anti-slip pad 19 serves to increase the surface friction of the roller 18 .

[0027] A vertical guide groove 8 is correspondingly provided on the mounting bracket 1 near the two connecting rods 9 , bearings 10 are embedded in the motor mounting plate 3 and the screw mounting plate 4 , the bidirectional threaded screw 6 is installed in the bearing 10 , and the mounting bracket 1 is fixed on the base 2 below.

[0028] In this embodiment, the guide groove 8 serves to fix the moving direction of the two connecting rods 9, the bearing 10 serves to support and fix the bidirectional threaded screw 6, and the base 2 lowers the center of gravity of the mounting bracket 1, thereby improving the stability of the device.

[0029] 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. An adjustable workpiece clamping device, comprising a mounting bracket (1), characterized in that: The mounting bracket (1) is provided with a motor mounting plate (3) and a screw mounting plate (4) in sequence from top to bottom, a forward and reverse motor (5) is mounted on the motor mounting plate (3), a bidirectional threaded screw (6) is rotatably connected between the motor mounting plate (3) and the screw mounting plate (4), the bidirectional threaded screw (6) is connected to the output end of the forward and reverse motor (5) through a preset through hole, and both ends of the bidirectional threaded screw (6) are threadedly connected to a moving block (7) at opposite positions of the thread lines, and the two ends are connected to the moving block (7) by a thread. The moving block (7) is connected to a connecting rod (9) on one side close to the mounting bracket (1), and a clamping portion (11) is fixed to one end of the two connecting rods (9) away from the moving block (7). A cylinder (13) is provided on the inner bottom surface of the clamping portion (11), and a push plate (14) is connected to the output end of the cylinder (13). A roller mounting frame (17) is provided on the side of the push plate (14) away from the cylinder (13), and a roller (18) is rotatably connected to the roller mounting frame (17).

2. The adjustable workpiece clamping device according to claim 1, characterized in that: The two moving blocks (7) are installed facing each other.

3. The adjustable workpiece clamping device according to claim 1, characterized in that: A guide rail (16) is also provided on the inner wall of the clamping portion (11), a slider (15) is slidably connected to the guide rail (16), and the slider (15) is installed between the push plate (14) and the roller mounting frame (17).

4. The adjustable workpiece clamping device according to claim 1, characterized in that: The surface of the roller (18) is covered with a layer of anti-skid pad (19).

5. The adjustable workpiece clamping device according to claim 1, characterized in that: The clamping portion (11) is provided with a notch on one side close to the roller (18), and fixed claw blocks (12) are mounted at both ends of the notch.

6. The adjustable workpiece clamping device according to claim 1, characterized in that: The mounting bracket (1) is provided with a vertical guide groove (8) corresponding to a position close to the two connecting rods (9).

7. The adjustable workpiece clamping device according to claim 1, characterized in that: The motor mounting plate (3) and the screw rod mounting plate (4) are embedded with bearings (10), and the bidirectional threaded screw rod (6) is installed in the bearings (10).

8. The adjustable workpiece clamping device according to claim 1, characterized in that: The mounting bracket (1) is fixed on the lower base (2).

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