Clamping device

Abstract

The utility model relates to the technical field of workpiece clamping, and particularly discloses a clamping device which comprises a base, a cylinder body, a deformable body, a plurality of clamping jaws, a piston and an air supply assembly, the cylinder body is connected with the base and forms a moving space, the periphery of the deformable body is connected with the periphery of the cylinder body, and the multiple clamping jaws are arranged on the deformable body at intervals around the center of the deformable body; the piston is arranged in the movable space in a sliding mode, penetrates through the cylinder body in a sliding mode and is connected with the center of the deformable body, a first cavity is formed between the piston and the base, a second cavity is formed between the piston and the cylinder body, and the piston is provided with a first channel communicating with the first cavity and a second channel communicating with the second cavity; the air supply assembly is connected with the base and slidably penetrates through the piston, the air supply assembly is provided with a first air path communicating with the first channel and a second air path communicating with the second channel, and positive pressure is introduced into the first air path or the second air path so that the multiple clamping jaws can be opened or closed. The clamping device is high in universality, the production efficiency is improved, and the manufacturing cost is reduced.

Description

Technical Field

[0001] This application relates to the field of workpiece clamping technology, specifically to a clamping device. Background Technology

[0002] In actual production and processing, round products typically need to be clamped to facilitate processing. Currently, dedicated jigs are usually designed based on the characteristics of round products. However, dedicated jigs have poor versatility, requiring the replacement of different jigs when switching products, resulting in low production efficiency and high manufacturing costs. Utility Model Content

[0003] In view of the above, it is necessary to propose a clamping device that is highly versatile, improves production efficiency, and reduces manufacturing costs.

[0004] This application provides a clamping device, including:

[0005] base;

[0006] The cylinder body is connected to the base and forms a movable space between the cylinder body and the base;

[0007] A deformable body, the periphery of which is connected to the periphery of the cylinder body, and the deformable body is disposed on the side of the cylinder body away from the base;

[0008] Multiple grippers are arranged at intervals around the center of the deformable body, and the multiple grippers are arranged on the side of the deformable body away from the cylinder body;

[0009] A piston is slidably disposed in the active space and slides through the cylinder and is connected to the center of the deformable body. A first cavity is formed between the piston and the base, and a second cavity is formed between the piston and the cylinder. The piston has a first channel and a second channel, the first channel communicating with the first cavity and the second channel communicating with the second cavity.

[0010] An air supply assembly is connected to the base and slidably passes through the piston. The air supply assembly has a first air passage and a second air passage. The first air passage is connected to the first channel, and the second air passage is connected to the second channel. Positive pressure is introduced into the first air passage or the second air passage to generate positive pressure in the first cavity or the second cavity, thereby pushing the center of the piston and the deformable body away from or closer to the base, and causing the multiple grippers to open or close.

[0011] In some embodiments, the air delivery assembly includes an air guide, which is connected to the base and slidably passes through the piston, and the air guide has a first air passage and a second air passage.

[0012] In some embodiments, the air delivery assembly further includes a rotary joint connected to the air guide member. The rotary joint has a first air passage and a second air passage, the first air passage being connected to the first air path and the second air passage being connected to the second air path.

[0013] In some embodiments, the clamping device further includes a sealing element, which is sleeved on the air guide and located between the air guide and the piston, wherein the sealing element is disposed on both sides of the first air passage and both sides of the second air passage.

[0014] In some embodiments, the clamping device further includes a support base and a sealing ring. The support base is disposed on the side of the deformable body away from the piston and spaced apart from the deformable body. The air supply assembly is slidably inserted through the center of the deformable body and connected to the support base. The sealing ring is sleeved on the air supply assembly and located between the air supply assembly and the deformable body.

[0015] In some embodiments, the clamping device further includes a plurality of supports, which are spaced apart around the center of the deformable body at the periphery of the cylinder, and the plurality of supports extend between two adjacent jaws.

[0016] In some embodiments, the piston includes a first part, a second part, and a third part connected in sequence. The first part is slidably disposed between the air supply assembly and the base. The second part is disposed between the base and the cylinder and forms the first cavity and the second cavity with the base and the cylinder, respectively. The third part is slidably disposed between the air supply assembly and the cylinder and connected to the center of the deformable body. The first channel is opened in the first part, and the second channel is opened in the second part.

[0017] In some embodiments, the clamping device further includes a sealing ring, wherein the first part, the second part and the third part are all fitted with the sealing ring, and the sealing ring fitted on the first part is located between the first part and the base, the sealing ring fitted on the second part is located between the second part and the cylinder body, and the sealing ring fitted on the third part is located between the third part and the cylinder body.

[0018] In some embodiments, the clamping device further includes a sealing ring disposed between the cylinder and the base.

[0019] In some embodiments, each of the grippers includes a connecting portion and a clamping portion, the connecting portion being connected to the deformable body, the clamping portion being connected to the connecting portion and extending away from the deformable body, and the clamping portion having an arcuate structure.

[0020] When clamping round products, such as products that need to be clamped, the above-mentioned clamping device introduces positive pressure into the first air passage, generating positive pressure in both the first channel and the first cavity. Under the action of the positive pressure in the first cavity, the piston is pushed away from the base. The piston slides relative to the air supply assembly and drives the center of the deformable body away from the base. Since the periphery of the deformable body is fixedly connected to the periphery of the cylinder, the center of the deformable body moves away from the base, causing the center of the deformable body to move away from the base relative to the periphery of the deformable body. The center of the deformable body drives multiple grippers to open outward, thus opening the multiple grippers. When the multiple grippers are open, the product is placed on the multiple grippers. After the product is placed on the multiple grippers, the air passage is switched to introduce positive pressure into the second air passage, generating positive pressure in both the second channel and the second cavity. Under the action of the positive pressure in the second cavity, the piston and the center of the deformable body are pushed closer to the base. The center of the deformable body drives multiple grippers to close inward, thus closing the multiple grippers to clamp the product, thereby achieving product clamping.

[0021] When clamping round products, such as those requiring internal support, the aforementioned clamping device introduces positive pressure into the second air passage, generating positive pressure in both the second channel and the second cavity. Under the action of the positive pressure in the second cavity, the piston is pushed closer to the base. The piston slides relative to the air supply assembly, causing the center of the deformable body to move closer to the base. Since the periphery of the deformable body is fixedly connected to the periphery of the cylinder, the center of the deformable body moves closer to the base, causing the center of the deformable body to be closer to the base relative to the periphery of the deformable body. The center of the deformable body also causes multiple grippers to close inward, thus closing the multiple grippers. When the multiple grippers are closed, the product is placed on the multiple grippers. After the product is placed on the multiple grippers, the air passage is switched to introduce positive pressure into the first air passage, generating positive pressure in both the first channel and the first cavity. Under the action of the positive pressure in the first cavity, the piston and the center of the deformable body are pushed away from the base. The center of the deformable body causes multiple grippers to open outward, thus opening the multiple grippers to internally support the product, thereby achieving internal support for the product.

[0022] The clamping device provided in this application embodiment achieves product clamping or internal support through the coordinated operation of the base, cylinder, deformable body, multiple grippers, piston, and air supply assembly. When switching product processing, only the grippers need to be replaced. The clamping device has high versatility, meeting the needs of rapid product processing changeover, saving changeover time, improving production efficiency, reducing the types of other devices, and lowering manufacturing costs. Furthermore, since the multiple grippers are spaced apart around the center of the deformable body and the deformable body deforms uniformly, the multiple grippers can centrally clamp the product, improving the positioning and clamping accuracy of the clamping device. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the clamping device provided in the embodiments of this application.

[0024] Figure 2 yes Figure 1 The clamping device shown is a cross-sectional view along line II-II.

[0025] Figure 3 yes Figure 2 The diagram shows the clamping device clamping the product.

[0026] Figure 4 yes Figure 2 The diagram shows the state of the product supported by the clamping device.

[0027] Explanation of main component symbols

[0028] Clamping device 100, base 10, cylinder 20, edge 21, support part 22, main body 23, moving space 30, first cavity 31, second cavity 32, deformable body 40, main body 41, protruding edge 42, gripper 50, connecting part 51, clamping part 52, piston 60, first channel 61, second channel 62, first part 63, second part 64, third part 65, air supply assembly 70, air guide 71, first air passage 711, second air passage 712, air guide 713, protruding part 714, rotary joint 72, first air channel 721, second air channel 722, seal 81, support seat 82, sealing ring 83, support 84, sealing ring 85, sealing ring 86, product 200. Detailed Implementation

[0029] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0030] In the description of this application, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, it should be noted that "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that allows communication between the two components; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0032] The following will describe some embodiments of this application in detail with reference to the accompanying drawings.

[0033] Please see Figure 1 This application provides a clamping device 100. The clamping device 100 is used to clamp, for example, a circular product 200 that is clamped or internally supported (see [link to application]). Figure 3 and Figure 4 The clamping device 100 is highly versatile and can meet the needs of rapid product changeover 200 processing, saving changeover time, improving production efficiency, and reducing manufacturing costs.

[0034] Please refer to the above. Figure 2 The clamping device 100 includes a base 10, a cylinder 20, a deformable body 40, multiple grippers 50, a piston 60, and an air supply assembly 70. The base 10 can be circular and is used to assemble the cylinder 20, the deformable body 40, the multiple grippers 50, the piston 60, the air supply assembly 70, etc., so that the clamping device 100 can be modularly configured.

[0035] The cylinder body 20 is connected to the base 10, forming a movable space 30 between them. The cylinder body 20 can be circular. Understandably, the periphery of the cylinder body 20 is fixedly connected to the periphery of the base 10, and the movable space 30 is formed between the center of the cylinder body 20 and the center of the base 10. In this embodiment, the cylinder body 20 may include an edge 21, a support portion 22, and a main body 23. Both the edge 21 and the support portion 22 are annular. The support portion 22 is perpendicularly connected to the periphery of the main body 23, and the edge 21 is perpendicularly connected to the support portion 22 and parallel to the main body 23. The edge 21 can be fixedly connected to the periphery of the base 10 using screws (not shown). The main body 23 is spaced apart from the center of the base 10 to form a movable space 30 between them. Understandably, in other embodiments, the support portion 22 may also be inclined relative to the main body 23 and the edge 21; this embodiment does not specifically limit this.

[0036] The periphery of the deformable body 40 is connected to the periphery of the cylinder body 20, and the deformable body 40 is disposed on the side of the cylinder body 20 away from the base 10. The deformable body 40 can be circular, and can be understood as an elastically deformable shell, that is, the deformable body 40 can also be a hollow structure. The deformable body 40 can be made of elastically deformable materials such as rubber. In this embodiment, the deformable body 40 includes a body 41 and a protruding edge 42. The protruding edge 42 is annular and is perpendicularly connected to the periphery of the body 41. The end of the protruding edge 42 away from the body 41 can be fixedly connected to the edge 21 of the cylinder body 20 by screws, and the protruding edge 42 is adapted to be fitted onto the support part 22 of the cylinder body 20. The body 41 is disposed on the side of the main body 23 of the cylinder body 20 away from the base 10.

[0037] Multiple grippers 50 are spaced apart around the center of the deformable body 40, and are located on the side of the deformable body 40 away from the cylinder body 20. In this embodiment, there are six grippers 50, which are spaced apart around the center of the deformable body 40 and are connected to the body 41 by screws. Understandably, in other embodiments, the number of grippers 50 may be more or less, depending on the actual situation. Each gripper 50 may include a connecting part 51 and a clamping part 52. The connecting part 51 is connected to the body 41 of the deformable body 40, and the clamping part 52 is connected to the connecting part 51 and extends away from the deformable body 40. The clamping part 52 may be an arc-shaped structure to accommodate and clamp the product 200. The clamping part 52 may be perpendicularly connected to the connecting part 51. Thus, when the product 200 is placed in the space enclosed by the multiple grippers 50, the multiple grippers 50 close relative to each other so that the multiple clamping parts 52 clamp the product 200; when the product 200 is placed on the multiple grippers 50, the end of the clamping part 52 away from the deformable body 40 can support the product 200, and the multiple grippers 50 open relative to each other so that the multiple clamping parts 52 internally support the product 200.

[0038] The piston 60 is slidably disposed within the movable space 30 and slides through the cylinder 20, connecting to the center of the deformable body 40. A first cavity 31 is formed between the piston 60 and the base 10, and a second cavity 32 is formed between the piston 60 and the cylinder 20. The piston 60 has a first channel 61 and a second channel 62, with the first channel 61 communicating with the first cavity 31 and the second channel 62 communicating with the second cavity 32. In this embodiment, the piston 60 slides through the main body 23 of the cylinder 20 and connects to the center of the main body 41 of the deformable body 40. Thus, when positive pressure is generated in the first cavity 31, the piston 60 is pushed away from the base 10 under the action of the positive pressure in the first cavity 31. The piston 60 drives the center of the deformable body 40 to move away from the base 10, thereby causing the deformable body 40 to bulge outward relative to the base 10, and thus causing the multiple grippers 50 to open. When positive pressure is generated in the second cavity 32, the piston 60 is pushed closer to the base 10 under the action of the positive pressure in the second cavity 32. The piston 60 drives the center of the deformable body 40 to move closer to the base 10, thereby causing the deformable body 40 to dent outward relative to the base 10, and thus causing the multiple grippers 50 to close. It can be understood that the multiple grippers 50 closing outward can also be understood as the multiple grippers 50 being in a closed state.

[0039] The air supply assembly 70 is connected to the base 10 and slides through the piston 60. Alternatively, the piston 60 can slide on the air supply assembly 70. The air supply assembly 70 has a first air passage 711 and a second air passage 712. The first air passage 711 communicates with the first channel 61, and the second air passage 712 communicates with the second channel 62. It can also be understood that the first air passage 711 and the second air passage 712 can be connected to an external air source (not shown). Both the first air passage 711 and the second air passage 712 are L-shaped. Positive pressure is supplied to either the first air passage 711 or the second air passage 712, causing positive pressure to be generated in the first channel 61 and the first cavity 31, or in the second channel 62 and the second cavity 32, thus pushing the piston 60 and the center of the deformable body 40 away from or towards the base 10, thereby causing the multiple grippers 50 to open or close.

[0040] Please refer to the above. Figure 3In this embodiment, when clamping a round product 200, for example, by clamping the product 200, the clamping device 100 introduces positive pressure into the first air passage 711. Positive pressure is generated in both the first channel 61 and the first cavity 31. Under the action of the positive pressure in the first cavity 31, the piston 60 is pushed away from the base 10. The piston 60 slides relative to the air supply assembly 70 and drives the center of the deformable body 40 to move away from the base 10. Since the periphery of the deformable body 40 is fixedly connected to the periphery of the cylinder 20, the center of the deformable body 40 moves away from the base 10, causing the center of the deformable body 40 to bulge and deform relative to the periphery of the deformable body 40 away from the base 10. The center of the piston 40 drives multiple grippers 50 to open outwards, thus opening the grippers 50. When the grippers 50 are open, the product 200 is placed on the grippers 50. After the product 200 is placed on the grippers 50, the air path is switched to introduce positive pressure into the second air path 712. Positive pressure is generated in both the second channel 62 and the second cavity 32. Under the action of the positive pressure in the second cavity 32, the piston 60 and the center of the deformable body 40 are pushed to move closer to the base 10. The center of the deformable body 40 drives the multiple grippers 50 to close inwards, thus closing the grippers 50 to clamp the product 200, thereby achieving the clamping of the product 200.

[0041] Please refer to the above. Figure 4 In this embodiment, when clamping a round product 200, such as an internal support product 200, the clamping device 100 introduces positive pressure into the second air passage 712. Positive pressure is generated in both the second channel 62 and the second cavity 32. Under the action of the positive pressure in the second cavity 32, the piston 60 is pushed to move closer to the base 10. The piston 60 slides relative to the air supply assembly 70 and drives the center of the deformable body 40 to move closer to the base 10. Since the periphery of the deformable body 40 is fixedly connected to the periphery of the cylinder 20, the movement of the center of the deformable body 40 closer to the base 10 causes the center of the deformable body 40 to be concave and deformed relative to the periphery of the deformable body 40 closer to the base 10. The center of the piston 40 drives multiple grippers 50 to close inward, thereby closing the multiple grippers 50. When the multiple grippers 50 are closed, the product 200 is placed on the multiple grippers 50. After the product 200 is placed on the multiple grippers 50, the air path is switched to introduce positive pressure into the first air path 711. Positive pressure is generated in both the first channel 61 and the first cavity 31. Under the action of the positive pressure in the first cavity 31, the piston 60 and the center of the deformable body 40 are pushed away from the base 10. The center of the deformable body 40 drives the multiple grippers 50 to open outward, thereby opening the multiple grippers 50 to support the product 200 inward, thus achieving the internal support of the product 200.

[0042] In this embodiment, the air delivery assembly 70 includes an air guide 71, which is connected to the base 10 and slidably passes through the piston 60. The air guide 71 has a first air passage 711 and a second air passage 712. Specifically, the air guide 71 includes a gas guide 713 and a protrusion 714. The gas guide 713 slidably passes through the piston 60, and the protrusion 714 is perpendicularly connected to the gas guide 713 and connected to the base 10. The protrusion 714 is located on the side of the base 10 opposite to the cylinder body 20, and the protrusion 714 can be fixedly connected to the base 10 by screws. The first air passage 711 and the second air passage 712 are both formed on the gas guide 713. Thus, by setting the above-mentioned air guide 71 and defining its specific structure, the air delivery assembly 70 is fixedly connected to the base 10, and the piston 60 can slide on the air delivery assembly 70. Furthermore, by allowing the piston 60 to slide on the air guide 71, the movement accuracy of the piston 60 is ensured, thereby improving the clamping and positioning accuracy of the clamping device 100.

[0043] To further improve the versatility of the clamping device 100, in this embodiment, the air supply assembly 70 also includes a rotary joint 72. The rotary joint 72 is connected to the air guide 71. The rotary joint 72 has a first air passage 721 and a second air passage 722. The first air passage 721 is connected to the first air path 711, and the second air passage 722 is connected to the second air path 712. The first air passage 721 and the second air passage 722 can be connected to an external air source. The rotary joint 72 can be a dual-passage high-speed rotary joint. Thus, by setting the rotary joint 72, while ensuring the supply of air to the first air passage 721 and the second air passage 722, the base 10, cylinder 20, deformable body 40, multiple grippers 50, piston 60, and air guide 71 can rotate. This allows the product 200 clamped by the clamping device 100 to rotate with the clamping device 100, facilitating the processing of the rotating product 200.

[0044] To ensure a tight seal between the gas guide 71 and the piston 60, in this embodiment, the clamping device 100 further includes a sealing element 81. The sealing element 81 can be a rubber ring, and it is fitted onto the gas guide 71 and located between the gas guide 71 and the piston 60. Specifically, sealing elements 81 are arranged on both sides of the first air passage 711 and both sides of the second air passage 712. More specifically, there can be three sealing elements 81, spaced apart on the gas guide 713 of the gas guide 71. These three sealing elements 81 are staggered with the first air passage 711 and the second air passage 712, such that two sealing elements 81 are arranged on both sides of the first air passage 711, and two sealing elements 81 are arranged on both sides of the second air passage 712. The first air passage 711 and the second air passage 712 share a single sealing element 81. It is understood that in other embodiments, the number of sealing elements 81 can be four or more. Thus, by providing the aforementioned sealing elements 81, a tight seal between the gas guide 71 and the piston 60 is ensured.

[0045] In order to support the product 200 when clamping the product 200, in this embodiment, the clamping device 100 further includes a support seat 82 and a sealing ring 83. The support seat 82 is disposed on the side of the deformable body 40 away from the piston 60 and spaced apart from the deformable body 40. The air supply component 70 is slidably inserted through the center of the deformable body 40 and connected to the support seat 82. The sealing ring 83 is sleeved on the air supply component 70 and located between the air supply component 70 and the deformable body 40. The sealing ring 83 can be a rubber ring. Specifically, the support base 82 can be a circular stepped structure, with the diameter of the lower end of the support base 82 being smaller than the diameter of the upper end. The air guide 71 of the air supply assembly 70 passes through the body 41 of the deformable body 40. The sealing ring 83 is sleeved on the air guide 71 and located between the air guide 71 and the body 41 of the deformable body 40. The support base 82 is spaced apart from the body 41 of the deformable body 40 and connected to the air guide 71 of the air supply assembly 70. The support base 82 can be fixedly connected to the air guide 71 by screws. In this way, by setting the support base 82 as described above, the support base 82 is fixedly connected to the air guide 71, so that the support base 82 can stably support the product 200. By setting the sealing ring 83 as described above, the sealing between the air guide 71 and the deformable body 40 is guaranteed.

[0046] To enable the clamping device 100 to support the product 200 when it is internally supporting the product 200, in this embodiment, the clamping device 100 further includes a plurality of support members 84. The plurality of support members 84 are spaced apart around the center of the deformable body 40 at the periphery of the cylinder 20, and each of the support members 84 extends between two adjacent grippers 50. Specifically, in this embodiment, there are three support members 84, which are spaced apart at the edge 21 of the cylinder 20 and abut against the protruding edge 42 of the deformable body 40. The support members 84 are used to support the product 200. Thus, by providing the aforementioned support members 84, the support members 84 can provide stable support for the product 200 when it is internally supported by the clamping device 100. It is understood that in other embodiments, the number of support members 84 may be more or less, depending on the actual situation.

[0047] In this embodiment, the piston 60 includes a first part 63, a second part 64, and a third part 65 connected in sequence. The first part 63 is slidably disposed between the air guide 71 of the air supply assembly 70 and the base 10. The second part 64 is disposed between the base 10 and the main body 23 of the cylinder 20 and abuts against the support part 22. The second part 64 forms a first cavity 31 and a second cavity 32 between the base 10 and the main body 23 of the cylinder 20, respectively. The third part 65 is slidably disposed between the air guide 71 of the air supply assembly 70 and the main body 23 of the cylinder 20, and is connected to the center of the deformable body 40. A first channel 61 is opened in the first part 63, and a second channel 62 is opened in the second part 64. Among them, three sealing members 81 sleeved on the air guide 71 are respectively located between the first part 63 and the air guide 71, between the second part 64 and the air guide 71, and between the third part 65 and the air guide 71. Thus, by setting the specific structure of the piston 60, the positive pressure in the first chamber 31 or the positive pressure in the second chamber 32 pushes the second part 64 to move the entire piston 60.

[0048] To ensure a tight seal between the piston 60 and the base 10 and cylinder 20, in this embodiment, the clamping device 100 further includes a sealing ring 85. The sealing ring 85 can be a rubber ring. Sealing rings 85 are fitted onto the outer periphery of the first part 63, the second part 64, and the third part 65. The sealing ring 85 fitted onto the first part 63 is located between the first part 63 and the base 10; the sealing ring 85 fitted onto the second part 64 is located between the second part 64 and the support part 22 of the cylinder 20; and the sealing ring 85 fitted onto the third part 65 is located between the third part 65 and the main body 23 of the cylinder 20. Thus, by providing the aforementioned sealing rings 85, the tight seal between the piston 60 and the base 10 and cylinder 20 is ensured.

[0049] To ensure a tight seal between the cylinder body 20 and the base 10, in this embodiment, the clamping device 100 further includes a sealing ring 86, which can be a rubber ring, and is disposed between the cylinder body 20 and the base 10. Thus, by providing the sealing ring 86, the tight seal between the cylinder body 20 and the base 10 is ensured.

[0050] The clamping device 100 provided in this embodiment achieves clamping or internal support of the product 200 through the coordinated cooperation of the base 10, cylinder 20, deformable body 40, multiple grippers 50, piston 60, and air supply assembly 70. When switching to process the product 200, only the grippers 50 need to be replaced. The clamping device 100 of this embodiment can achieve clamping or internal support of the product 200. The clamping device 100 has high versatility, is simple to operate, and can meet the need for rapid switching of product 200 processing, saving switching time, improving production efficiency, reducing the types of other devices, lowering manufacturing costs, and reducing inventory. Furthermore, since the multiple grippers 50 are spaced apart around the center of the deformable body 40 and the deformation of the deformable body 40 is consistent, the multiple grippers 50 can centrally clamp the product 200, improving the positioning and clamping accuracy of the clamping device 100.

[0051] The clamping device 100 provided in this embodiment further achieves stable support for the product 200 through the coordinated cooperation of the support base 82 and the support member 84, thereby improving the clamping and positioning accuracy of the clamping device 100. When switching to process the product 200, the clamping device 100 can adapt and replace the gripper 50, support base 82, and support member 84 according to the structure of other types of products 200, further improving the versatility of the clamping device 100.

[0052] The clamping device 100 provided in this embodiment further ensures the sealing performance and stable use of the clamping device 100 through the coordinated cooperation between the sealing element 81, sealing ring 83, sealing ring 85 and sealing ring 86.

[0053] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be embraced within this application.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. A clamping device, characterized in that, include: Base; The cylinder body is connected to the base and forms a movable space between the cylinder body and the base; A deformable body, the periphery of which is connected to the periphery of the cylinder body, and the deformable body is disposed on the side of the cylinder body away from the base; Multiple grippers are arranged at intervals around the center of the deformable body, and the multiple grippers are arranged on the side of the deformable body away from the cylinder body; A piston is slidably disposed in the active space and slides through the cylinder and is connected to the center of the deformable body. A first cavity is formed between the piston and the base, and a second cavity is formed between the piston and the cylinder. The piston has a first channel and a second channel, the first channel communicating with the first cavity and the second channel communicating with the second cavity. An air supply assembly is connected to the base and slidably passes through the piston. The air supply assembly has a first air passage and a second air passage. The first air passage is connected to the first channel, and the second air passage is connected to the second channel. Positive pressure is introduced into the first air passage or the second air passage to generate positive pressure in the first cavity or the second cavity, thereby pushing the center of the piston and the deformable body away from or closer to the base, and causing the multiple grippers to open or close.

2. The clamping device as described in claim 1, characterized in that, The air delivery assembly includes an air guide, which is connected to the base and slidably passes through the piston. The air guide has a first air passage and a second air passage.

3. The clamping device as described in claim 2, characterized in that, The air delivery assembly also includes a rotary joint, which is connected to the air guide. The rotary joint has a first air passage and a second air passage, the first air passage being connected to the first air path and the second air passage being connected to the second air path.

4. The clamping device as described in claim 2, characterized in that, The clamping device further includes a sealing element, which is sleeved on the air guide and located between the air guide and the piston. The sealing element is provided on both sides of the first air passage and both sides of the second air passage.

5. The clamping device as described in claim 1, characterized in that, The clamping device further includes a support base and a sealing ring. The support base is disposed on the side of the deformable body away from the piston and spaced apart from the deformable body. The air supply component is slidably inserted through the center of the deformable body and connected to the support base. The sealing ring is sleeved on the air supply component and located between the air supply component and the deformable body.

6. The clamping device as described in claim 1, characterized in that, The clamping device further includes a plurality of support members, which are arranged at intervals around the center of the deformable body on the periphery of the cylinder, and the plurality of support members extend to the space between two adjacent jaws.

7. The clamping device as described in claim 1, characterized in that, The piston includes a first part, a second part, and a third part connected in sequence. The first part is slidably disposed between the air supply assembly and the base. The second part is disposed between the base and the cylinder and forms the first cavity and the second cavity with the base and the cylinder, respectively. The third part is slidably disposed between the air supply assembly and the cylinder and is connected to the center of the deformable body. The first channel is opened in the first part, and the second channel is opened in the second part.

8. The clamping device as described in claim 7, characterized in that, The clamping device further includes a sealing ring, which is fitted onto the first part, the second part and the third part. The sealing ring fitted onto the first part is located between the first part and the base, the sealing ring fitted onto the second part is located between the second part and the cylinder body, and the sealing ring fitted onto the third part is located between the third part and the cylinder body.

9. The clamping device as described in claim 1, characterized in that, The clamping device further includes a sealing ring, which is disposed between the cylinder and the base.

10. The clamping device as claimed in claim 1, characterized in that, Each of the grippers includes a connecting portion and a clamping portion. The connecting portion is connected to the deformable body, and the clamping portion is connected to the connecting portion and extends away from the deformable body. The clamping portion has an arc-shaped structure.

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