Centering elastic clamping mechanism

Abstract

The utility model discloses a centering elastic clamping mechanism which comprises a bottom plate, the upper end of the bottom plate is fixedly connected with a front-back air cylinder, the telescopic end of the front-back air cylinder is fixedly connected with a fixing base, the lower end of the fixing base is fixedly connected with an up-down air cylinder, and the telescopic end of the up-down air cylinder is fixedly connected with a first U-shaped block. A first U-shaped block is fixedly connected to the upper end of the base, a first rectangular block is slidably connected to the interior of the first U-shaped block, a second U-shaped block is fixedly connected to the upper end of the first rectangular block, a second rectangular block is slidably connected to the interior of the second U-shaped block, a mounting base is fixedly connected to the upper end of the second rectangular block, and a lower clamping air cylinder is fixedly connected to the upper end of the mounting base. Lower V-shaped clamps are fixed to the two telescopic ends of the lower clamping air cylinder. The centering elastic clamping mechanism can effectively solve the clamping problem of products with large center deviation, achieves accurate and reliable clamping operation of the products, and meets the actual application requirements in the fields of industrial production and the like.

Description

Technical Field

[0001] This utility model relates to the field of clamping mechanism technology, and in particular to a centering elastic clamping mechanism. Background Technology

[0002] In many fields of industrial automation production and material handling, precise gripping and clamping operations are often required to achieve efficient transfer of products between different processes. Among them, top-down center gripping is a common operation method, widely used in scenarios such as assembly lines and warehouse logistics automation.

[0003] However, a significant problem exists in practical applications. When using a top-down centering gripping method, the position of the product to be gripped is often uncertain, especially its center position, which may shift to varying degrees. In most existing devices and related technologies, the gripping mechanisms used for this centering gripping operation are designed to handle minor center shifts.

[0004] These existing gripping mechanisms can effectively and accurately grasp products with only slight center offsets through conventional adjustment and positioning mechanisms. For example, they may use simple guide structures or fine-tuning devices to correct center offsets within a small range, thereby ensuring a smooth gripping process.

[0005] However, these existing technologies and mechanisms fall short when faced with a product whose center offset is too large. Because their design and structural features are primarily optimized for minor center offsets, they lack sufficient flexibility and a wide-ranging center correction mechanism. Therefore, when dealing with products with significant center offsets, they often fail to accurately locate and grasp the product, ultimately leading to grasping failure.

[0006] Such gripping failures not only affect production efficiency, preventing smooth product transfer between processes and potentially causing the entire production line to stop, but also may damage products and increase production costs. Therefore, there is an urgent need for a new type of gripping mechanism that can effectively solve the problem of gripping products with significant center offset.

[0007] Therefore, a centering elastic clamping mechanism needs to be designed to solve the above problems. Utility Model Content

[0008] The purpose of this invention is to address the shortcomings of existing technologies by proposing a centering elastic clamping mechanism. This centering elastic clamping mechanism can effectively solve the problem of clamping products with large center offsets, achieving precise and reliable clamping operations and meeting the practical application needs of industrial production and other fields.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] A centering elastic clamping mechanism includes a base plate. A front and rear cylinder are fixedly connected to the upper end of the base plate. A fixed seat is fixedly connected to the telescopic ends of the front and rear cylinders. An upper and lower cylinder are fixedly connected to the lower end of the fixed seat. A first U-shaped block is fixedly connected to the telescopic ends of the upper and lower cylinders. A first rectangular block is slidably connected within the first U-shaped block. A second U-shaped block is fixedly connected to the upper end of the first rectangular block. A second rectangular block is slidably connected within the second U-shaped block. A mounting base is fixedly connected to the upper end of the second rectangular block. A lower clamping cylinder is fixedly connected to the upper end of the mounting base. Both telescopic ends of the lower clamping cylinder are fixed with lower V-shaped clamps.

[0011] Preferably, the front and rear sides of the first rectangular block are elastically connected to the inner walls of the front and rear sides of the first U-shaped block through a plurality of left and right elastic rods, and the left and right sides of the second rectangular block are elastically connected to the inner walls of the left and right sides of the second U-shaped block through a plurality of front and rear elastic rods.

[0012] Preferably, a V-shaped guide structure is fixedly connected to the left side of the mounting base.

[0013] Preferably, a lower guide post is fixedly connected to the upper end of the mounting base, an upper guide plate is fixedly connected to the upper end of the lower guide post, an upper clamping cylinder is fixedly connected to the lower end of the upper guide plate, and a plurality of clamping blocks are provided at the lower end of the upper clamping cylinder.

[0014] Preferably, all of the clamping blocks are L-shaped, and the clamping blocks are arranged in a circular array at the lower end of the upper clamping cylinder.

[0015] Preferably, each of the left and right elastic rods and the front and rear elastic rods is provided with an elastic adjustment ring.

[0016] Compared with existing technologies, the advantages of this device are:

[0017] 1. Compared with existing technologies, by using front and rear cylinders to push the V-shaped guide structure to contact the product, when the product has a large offset in front, back, left and right, the elastic deformation of the left and right elastic rods and the front and rear elastic rods is used to realize the synchronous offset of the lower V-shaped clamp, lower clamping cylinder, V-shaped guide structure and other components with the product. This can effectively deal with the situation where the product has a large center offset, ensure that it can always keep concentric with the product and achieve accurate gripping, and greatly improve the adaptability to products with different center offset states.

[0018] 2. Compared with existing technologies, during the clamping and lifting process of the product by the lower clamping cylinder, the guiding action of the lower guide column and the upper guide plate, along with the displacement adjustment of the elastic rod, ensures that the upper clamping cylinder is concentric with the product and further clamps it through its multiple L-shaped clamping blocks. This upper and lower coordinating clamping method achieves all-round and stable clamping of the product, effectively preventing loosening or falling during subsequent operations such as transfer. Compared with some existing technologies that can only provide clamping force in one direction, the clamping effect is more reliable.

[0019] 3. Compared to existing technologies, this device features spring force adjustment rings on multiple left and right elastic rods and front and rear elastic rods. This design allows for flexible adjustment of the spring force of each elastic rod based on the material, shape, size, and other characteristics of the product being gripped, as well as the requirements of different working scenarios. For example, when gripping harder products, the spring force can be appropriately increased to ensure accurate response and sufficient clamping force during offset adjustment and clamping; when gripping softer products, the spring force can be appropriately reduced to avoid damaging the product. Many existing clamping mechanisms often lack this flexible spring force adjustment function, making this device more flexible and adaptable in this respect, better meeting diverse clamping needs. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a centering elastic clamping mechanism proposed in this utility model;

[0021] Figure 2 for Figure 1 A structural diagram from another perspective;

[0022] Figure 3 for Figure 1 A bottom view.

[0023] In the diagram: 1 Upper guide plate, 2 Upper clamping cylinder, 3 Fixed seat, 4 Lower V-clamp, 5 Left and right elastic rods, 6 Upper and lower cylinders, 7 Front and rear cylinders, 8 Front and rear elastic rods, 9 V-shaped guide structure, 10 Lower clamping cylinder, 11 Lower guide post, 12 Elastic adjustment ring, 13 Base plate, 14 First U-shaped block, 15 Second U-shaped block. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Reference Figures 1-3 A centering elastic clamping mechanism includes a base plate 13. A front and rear cylinder 7 is fixedly connected to the upper end of the base plate 13. A fixed seat 3 is fixedly connected to the telescopic end of the front and rear cylinder 7. An upper and lower cylinder 6 is fixedly connected to the lower end of the fixed seat 3. A first U-shaped block 14 is fixedly connected to the telescopic end of the upper and lower cylinder 6. A first rectangular block is slidably connected inside the first U-shaped block 14. A second U-shaped block 15 is fixedly connected to the upper end of the first rectangular block. A second rectangular block is slidably connected inside the second U-shaped block 15. A mounting seat is fixedly connected to the upper end of the second rectangular block. A lower clamping cylinder 10 is fixedly connected to the upper end of the mounting seat. Both telescopic ends of the lower clamping cylinder 10 are fixed with lower V-shaped clamps 4.

[0026] The front and rear sides of the first rectangular block are elastically connected to the inner walls of the front and rear sides of the first U-shaped block 14 through multiple left and right elastic rods 5. The left and right sides of the second rectangular block are elastically connected to the inner walls of the left and right sides of the second U-shaped block 15 through multiple front and rear elastic rods 8. Each left and right elastic rod 5 and each front and rear elastic rod 8 is provided with an elastic adjustment ring 12. The elastic adjustment ring 12 can flexibly adjust the elastic force of each elastic rod according to the characteristics of the actual gripping product and the needs of different working scenarios.

[0027] The left side of the mounting base is fixedly connected to a V-shaped guide structure 9.

[0028] The upper end of the mounting base is fixedly connected to a lower guide post 11, the upper end of the lower guide post 11 is fixedly connected to an upper guide plate 1, the lower end of the upper guide plate 1 is fixedly connected to an upper clamping cylinder 2, and the lower end of the upper clamping cylinder 2 is provided with multiple clamping blocks, all of which are L-shaped and arranged in a ring array at the lower end of the upper clamping cylinder 2.

[0029] The functional principle of this utility model can be explained through the following operation: In the initial state, each component is in its corresponding position. The front and rear cylinders 7, the upper and lower cylinders 6, the lower clamping cylinder 10, and the upper clamping cylinder 2 are all in an inactive state. The left and right elastic rods 5 and the front and rear elastic rods 8 have not been displaced. The elastic adjustment rings 12 on each elastic rod can be pre-set with the corresponding elastic parameters according to actual needs.

[0030] When a product clamping operation is required, the front and rear cylinders 7 are activated first. The front and rear cylinders 7 extend and push the fixed base 3, which is fixedly connected to them, forward, so that the V-shaped guide structure 9 installed on the fixed base 3 gradually approaches and contacts the product to be gripped.

[0031] Because the product to be grasped may have a center offset in the front-back and left-right directions, when the V-shaped guide structure 9 comes into contact with the product, the squeezing force generated by the product's center offset will cause the connected components to move accordingly. Specifically, the front and rear elastic rods 8 will move between the inner walls of the left and right sides of the second U-shaped block 15 due to the front-back squeezing force, and the left and right elastic rods 5 will move between the inner walls of the front and rear sides of the first U-shaped block 14 due to the left and right squeezing force.

[0032] During the displacement of these elastic rods, the lower V-clamp 4, the lower clamping cylinder 10, and the V-shaped guide structure 9 will shift synchronously with the product's offset, always maintaining a state of concentricity with the product.

[0033] After achieving concentricity with the product, the lower clamping cylinder 10 begins to operate. The two telescopic ends of the lower clamping cylinder 10 drive the lower V-clamp 4 to move in opposite directions, clamping the product through the lower V-clamp 4, thereby initially fixing the product in place.

[0034] Next, the upper and lower cylinders 6 are activated. The movement of the upper and lower cylinders 6 causes their extension and retraction ends to move the first U-shaped block 14 and all connected components upward, and the product rises accordingly.

[0035] During the product's ascent, the lower guide post 11 and the upper guide plate 1 act as guides, ensuring the smoothness of the entire ascent process. Simultaneously, since the product may still have some center offset, the mutual compression between the lower guide post 11 and the upper guide plate 1 and other components during the ascent will again cause displacement of the front and rear elastic rods 8 and the left and right elastic rods 5.

[0036] This further displacement adjustment allows the upper clamping cylinder 2 to achieve a more concentric state with the product, preparing it for the subsequent clamping of the product by the upper clamping cylinder 2.

[0037] Once the upper clamping cylinder 2 is concentric with the product, it begins to operate. Multiple L-shaped clamping blocks arranged in a circular array at the lower end of the upper clamping cylinder 2 move downwards to re-clamp the product, cooperating with the lower V-shaped clamp 4 to achieve a stable, all-around clamping of the product.

[0038] After the product clamping operation is completed, if it is necessary to transfer the product or perform other subsequent operations, the entire centering elastic clamping mechanism can move along with the clamped product to realize the product's release from the gripping position and complete the entire product concentric adjustment and clamping release process.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A centering elastic clamping mechanism, comprising a base plate (13), characterized in that: The upper end of the base plate (13) is fixedly connected to a front and rear cylinder (7), the telescopic end of the front and rear cylinder (7) is fixedly connected to a fixed seat (3), the lower end of the fixed seat (3) is fixedly connected to an upper and lower cylinder (6), the telescopic end of the upper and lower cylinder (6) is fixedly connected to a first U-shaped block (14), a first rectangular block is slidably connected inside the first U-shaped block (14), the upper end of the first rectangular block is fixedly connected to a second U-shaped block (15), the second U-shaped block (15) is slidably connected to a second rectangular block, the upper end of the second rectangular block is fixedly connected to a mounting seat, the upper end of the mounting seat is fixedly connected to a lower clamping cylinder (10), and both telescopic ends of the lower clamping cylinder (10) are fixed with lower V-shaped clamps (4).

2. The centering elastic clamping mechanism according to claim 1, characterized in that: The front and rear sides of the first rectangular block are elastically connected to the inner walls of the front and rear sides of the first U-shaped block (14) through multiple left and right elastic rods (5), and the left and right sides of the second rectangular block are elastically connected to the inner walls of the left and right sides of the second U-shaped block (15) through multiple front and rear elastic rods (8).

3. The centering elastic clamping mechanism according to claim 1, characterized in that: A V-shaped guide structure (9) is fixedly connected to the left side of the mounting base.

4. The centering elastic clamping mechanism according to claim 1, characterized in that: The upper end of the mounting base is fixedly connected to a lower guide post (11), the upper end of the lower guide post (11) is fixedly connected to an upper guide plate (1), the lower end of the upper guide plate (1) is fixedly connected to an upper clamping cylinder (2), and the lower end of the upper clamping cylinder (2) is provided with multiple clamping blocks.

5. A centering elastic clamping mechanism according to claim 4, characterized in that: All of the clamping blocks are L-shaped and are arranged in a ring array at the lower end of the upper clamping cylinder (2).

6. A centering elastic clamping mechanism according to claim 2, characterized in that: Each of the left and right elastic rods (5) and the front and rear elastic rods (8) is provided with an elastic adjustment ring (12).

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