Opening and closing clamping device

Abstract

This utility model relates to the field of automated clamping device technology, and in particular to an opening and closing clamping device, comprising a device body, the device body including a cylinder, a gripper assembly, and an air passage interface; the top of the cylinder is assembled and connected to the gripper assembly; a cover is connected to the top of the gripper assembly, and the cover is connected to the gripper assembly; the air passage interface is connected to the side of the cylinder, and the air passage interface is used to connect to an external air source to input driving gas into the interior of the cylinder to control the gripper assembly to realize the opening and closing action. This utility model provides an opening and closing clamping device with high-precision control, high-stability clamping, and a simple and reliable structure.

Description

Technical Field

[0001] This utility model relates to the field of automated clamping device technology, and in particular to an opening and closing clamping device. Background Technology

[0002] In fields such as industrial production, automated equipment, and robotics applications, it is often necessary to clamp and move various objects.

[0003] In the process of inserting and removing positioning pins in the PCB industry, traditional clamping devices have certain limitations in structural design and performance. For example, they lack control precision, making it difficult to meet the precise clamping requirements of small and precision components; they have poor clamping stability, making them prone to slipping when handling heavy or smooth objects; and their complex structure leads to high costs and difficult maintenance. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide an opening and closing clamping device with high-precision control, high-stability clamping, and a simple and reliable structure.

[0005] The present invention adopts the following technical solution:

[0006] An opening and closing clamping device includes a device body, which includes a cylinder, a gripper assembly, and an air passage interface. The top of the cylinder is assembled and connected to the gripper assembly. A cover is connected to the top of the gripper assembly, and the cover is connected to the gripper assembly. The air passage interface is connected to the side of the cylinder and is used to connect to an external air source to input driving gas into the interior of the cylinder to control the gripper assembly to perform opening and closing actions.

[0007] A further improvement to the above technical solution is that the cylinder body has several coaxially distributed chambers inside, each chamber is arranged in layers along the axial direction of the cylinder body, each chamber is provided with an annular piston block, and adjacent chambers are separated by a seal.

[0008] A further improvement to the above technical solution is that the sealing element is an annular partition, which is embedded between adjacent chambers.

[0009] A further improvement to the above technical solution is that a central shaft connected to an annular piston block is provided through the center of the cylinder body, and one end of the central shaft is connected to the gripper assembly for transmission; a guide sleeve is provided between the central shaft and the cylinder body, and the guide sleeve is sleeved on the outside of the central shaft for linear guidance of the movement of the central shaft.

[0010] A further improvement to the above technical solution is that the gripper assembly includes three gripper blocks and a transmission block; each gripper block is evenly spaced along the circumference of the transmission block, and each gripper block is provided with a driven part; the transmission block includes an integrally formed base and a transmission part; the base is connected to the central shaft; the transmission part is connected to the driven part in a transmission connection.

[0011] A further improvement to the above technical solution is that the gripper block is provided with a clamping part, and the inner side of the clamping part is provided with anti-slip teeth, which are used to enhance clamping stability.

[0012] A further improvement to the above technical solution is that the driven part has a connecting groove, and one side of the connecting groove has a mating surface.

[0013] A further improvement to the above technical solution is that the base has a threaded section inside, and the threaded section is coaxially and fixedly connected to the bottom of the central shaft.

[0014] A further improvement to the above technical solution is that the transmission part is provided with at least three transmission arms in the circumferential direction, each transmission arm extends outward at an inclination along the circumferential direction of the transmission part, and each transmission arm is provided with a transmission inclined surface on its outer side. The transmission inclined surface is used to contact the mating surface, so that the movement of the transmission block is converted into the radial swing of the gripper block, thereby realizing the opening and closing action of the gripper.

[0015] A further improvement to the above technical solution is that the air passage interface is provided with several, and each air passage interface is connected to a different chamber, which is used to drive the central shaft to move by controlling the air pressure difference of each chamber.

[0016] The beneficial effects of this utility model are as follows:

[0017] This invention features a multi-chamber cylinder, a special gripper assembly transmission structure, anti-slip teeth, and multiple air passage interfaces, achieving precise control, stable clamping, reliable transmission, and wide adaptability. It can meet the needs of object clamping and operation in various working scenarios, possessing high working accuracy, reliability, and versatility, while also offering advantages in terms of ease of maintenance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the opening and closing clamping device of this utility model;

[0019] Figure 2 for Figure 1 A three-dimensional sectional view of the opening and closing clamping device;

[0020] Figure 3 for Figure 1 Exploded view of the opening and closing clamping device;

[0021] Figure 4 for Figure 1 A schematic diagram of the gripper block of the opening and closing clamping device;

[0022] Figure 5 for Figure 1 A schematic diagram of the transmission block of the opening and closing clamping device.

[0023] The numbers on the map are:

[0024] 10. Device body; 11. Air inlet; 12. Cover; 20. Cylinder; 21. Chamber; 22. Annular piston block; 23. Seal; 24. Central shaft; 25. Guide sleeve; 30. Gripper assembly; 40. Gripper block; 41. Driven part; 42. Clamping part; 43. Anti-slip teeth; 44. Connecting groove; 45. Mating surface; 50. Transmission block; 51. Base; 52. Threaded section; 60. Transmission part; 61. Transmission arm; 62. Transmission ramp. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be noted that the terms "vertical direction," "up," "down," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. In addition, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] like Figures 1 to 5As shown in the figure, this is an embodiment of the present invention, relating to an opening and closing clamping device, including a device body 10. The device body 10 includes a cylinder 20, a gripper assembly 30, and an air passage interface 11. The top of the cylinder 20 is assembled and connected to the gripper assembly 30. A cover 12 is connected to the top of the gripper assembly 30, and the cover 12 is connected to the gripper assembly 30. The air passage interface 11 is connected to the side of the cylinder 20 and is used to connect to an external air source to input driving gas into the interior of the cylinder 20 to control the gripper assembly to perform opening and closing actions. Specifically, the above structural design enables the device to input driving gas from an external air source to realize the opening and closing actions of the gripper assembly, providing a basic framework for the operation of the entire device. It has the characteristics of clear structure and clear principle, which facilitates subsequent optimization and improvement of the device.

[0029] like Figure 2 As shown, the cylinder body 20 has several coaxially distributed chambers 21 inside, each chamber 21 arranged in layers along the axial direction of the cylinder body 20. Each chamber 21 is equipped with an annular piston block 22, and adjacent chambers 21 are separated by seals 23. Specifically, the pressure difference between different chambers 21 is used to achieve more precise and flexible drive control. The arrangement of multiple chambers 21 is equivalent to multiple independent power units, which can achieve diversified control of the movement of the central shaft 24 by adjusting the air pressure of different chambers 21 according to actual working needs. For example, it can achieve movement with different speeds and strokes, greatly improving the control accuracy and adaptability of the device.

[0030] like Figure 2 As shown, the sealing element 23 is an annular partition, which is embedded between adjacent chambers 21. Specifically, the annular partition effectively prevents gas leakage between adjacent chambers 21, ensuring that the gas pressure in each chamber 21 can be maintained stably, thereby ensuring the stable operation of the entire device.

[0031] like Figure 2 As shown, a central shaft 24, connected to an annular piston block 22, runs through the center of the cylinder body 20. One end of the central shaft 24 is connected to the gripper assembly 30. A guide sleeve 25 is provided between the central shaft 24 and the cylinder body 20. The guide sleeve 25 is fitted on the outside of the central shaft 24 to provide linear guidance for the movement of the central shaft 24. Specifically, the above design ensures the stability and straightness of the central shaft 24 during movement, preventing the central shaft 24 from shifting or wobbling during movement, thereby ensuring that the gripper assembly 30 can accurately perform opening and closing actions, improving the working accuracy and reliability of the device.

[0032] like Figure 3As shown, the gripper assembly 30 includes three gripper blocks 40 and a transmission block 50. Each gripper block 40 is evenly spaced along the circumference of the transmission block 50, and each gripper block 40 is provided with a driven part 41. The transmission block 50 includes an integrally formed base 51 and a transmission part 60. The base 51 is connected to the central shaft 24. The transmission part 60 is drively connected to the driven part 41. Specifically, the even distribution of the three gripper blocks 40 along the circumference of the transmission block 50 allows the gripping force to be applied evenly to the object, preventing the object from tilting or slipping due to uneven force. The transmission connection between the transmission block 50 and the central shaft 24 is simple and reliable, efficiently converting the linear motion of the central shaft 24 into the opening and closing action of the grippers, improving the gripping response speed and stability.

[0033] like Figure 4 As shown, the gripper block 40 is provided with a gripping part 42, and the inner side of the gripping part 42 is provided with anti-slip teeth 43, which are used to enhance gripping stability. Specifically, the anti-slip teeth 43 greatly enhance the friction during gripping, making the gripper more stable when gripping an object, effectively preventing the object from slipping during gripping, and improving the reliability and safety of the device in actual work, especially suitable for gripping objects with smooth surfaces or heavy weight.

[0034] like Figure 4 As shown, the driven part 41 has a connecting groove 44, and a mating surface 45 is provided on one side of the connecting groove 44. Specifically, the connecting groove 44 of the driven part 41 provides passage space for the transmission arm 61, while the mating surface 45 ensures tight contact between the transmission arm 61 and the driven part 41, reduces transmission gap, avoids lag or jamming, makes the opening and closing action of the gripper smoother, and improves transmission efficiency.

[0035] like Figure 2 As shown, the base 51 has a threaded section 52 inside, which is coaxially and fixedly connected to the bottom of the central shaft 24. Specifically, the threaded connection has the advantages of a firm connection and convenient installation and disassembly. Connecting the base 51 to the central shaft 24 in this way can ensure the transmission stability between the transmission block 50 and the central shaft 24. At the same time, it is convenient to operate when maintenance or replacement of parts is required, reducing the difficulty of maintenance.

[0036] like Figure 5As shown, the transmission unit 60 has at least three transmission arms 61 circumferentially arranged. Each transmission arm 61 extends outwardly at an incline along the circumference of the transmission unit 60. Each transmission arm 61 has a transmission inclined surface 62 on its outer side, which contacts the mating surface 45, converting the movement of the transmission block 50 into the radial oscillation of the gripper block 40, thus realizing the opening and closing action of the gripper. Specifically, the above-described transmission structure design makes the transmission process smoother and more efficient, effectively converting the linear motion of the central shaft 24 into the precise radial oscillation of the gripper block 40, achieving rapid and accurate opening and closing of the gripper, and improving the working efficiency and performance of the device.

[0037] like Figure 1 As shown, the air passage interface 11 is provided with several, each air passage interface 11 being connected to a different chamber 21, used to drive the central shaft 24 to move by controlling the air pressure difference of each chamber 21. Specifically, the arrangement of multiple air passage interfaces 11 further enhances the control flexibility of the device, enabling precise adjustment of the air pressure of each chamber 21 according to different working scenarios and needs, thereby achieving precise control of the movement of the central shaft 24, allowing the gripper to perform opening and closing operations at different speeds, forces, and strokes, greatly improving the adaptability and working accuracy of the device.

[0038] The working principle of this utility model is as follows:

[0039] An external air source supplies driving gas to different chambers 21 inside the cylinder 20 through the air passage interface 11. Since the chambers 21 are separated by seals 23, when a pressure difference occurs between the chambers 21, the annular piston block 22 drives the central shaft 24 to move axially along the cylinder 20 under the action of the pressure difference. The movement of the central shaft 24 is transmitted to the transmission block 50 via its connection with the transmission block 50. The transmission arm 61 on the transmission part 60 of the transmission block 50 interacts with the connecting groove 44 and mating surface 45 of the driven part 41 of the gripper block 40. The transmission inclined surface 62 on the outer side of the transmission arm 61 pushes the mating surface 45, causing the gripper block 40 to swing radially around a certain axis, thereby realizing the opening and closing action of the gripper. When gripping an object, the anti-slip teeth 43 on the inner side of the gripping part 42 of the gripper block 40 contact the object surface, increasing friction and ensuring that the object is stably gripped. By controlling the pressure and flow rate of gas input into different chambers 21 through the air interface 11, the moving speed, stroke and force of the central shaft 24 can be precisely controlled, thereby achieving precise control of the opening and closing action of the gripper to meet different working requirements.

[0040] This utility model features a multi-chamber cylinder 21, a special gripper assembly 30, a transmission structure, anti-slip teeth 43, and multiple air passage interfaces 11, achieving precise control, stable clamping, reliable transmission, and wide adaptability. It can meet the needs of object clamping and operation in various working scenarios, possessing high working accuracy, reliability, and versatility, while also offering advantages in terms of ease of maintenance.

[0041] The above description merely illustrates the preferred technical solution of this utility model, and while the description is relatively specific and detailed, it should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and this utility model also intends to include these modifications and variations.

Claims

1. An opening and closing clamping device characterized by comprising: The device includes a main body, which comprises a cylinder, a gripper assembly, and an air passage interface. The top of the cylinder is assembled and connected to the gripper assembly. A cover is connected to the top of the gripper assembly, and the cover is connected to the gripper assembly. The air passage interface is connected to the side of the cylinder and is used to connect to an external air source to input driving gas into the interior of the cylinder to control the gripper assembly to perform opening and closing actions.

2. The opening and closing clamping device according to claim 1, characterized in that The cylinder body has several coaxially distributed chambers inside, and each chamber is arranged in layers along the axial direction of the cylinder body. Each chamber is provided with an annular piston block, and adjacent chambers are separated by a seal.

3. The opening and closing clamping device according to claim 2, characterized in that The sealing element is an annular partition, which is embedded between adjacent chambers.

4. The opening and closing clamping device according to claim 1, characterized in that A central shaft, connected to an annular piston block, is provided through the center of the cylinder body. One end of the central shaft is connected to the gripper assembly. A guide sleeve is provided between the central shaft and the cylinder body. The guide sleeve is fitted on the outside of the central shaft and is used to linearly guide the movement of the central shaft.

5. The opening and closing clamping device according to claim 1, characterized in that The gripper assembly includes three gripper blocks and a transmission block; each gripper block is evenly spaced along the circumference of the transmission block, and each gripper block is provided with a driven part; the transmission block includes an integrally formed base and a transmission part; the base is connected to a central shaft; the transmission part is drivenly connected to the driven part.

6. The opening and closing clamping device according to claim 5, characterized in that The gripper block is provided with a clamping part, and the inner side of the clamping part is provided with anti-slip teeth, which are used to enhance the clamping stability.

7. The opening and closing clamping device according to claim 5, characterized in that The driven part has a connecting groove, and one side of the connecting groove has a mating surface.

8. The opening and closing clamping device according to claim 5, characterized in that The base has a threaded section inside, which is coaxially and fixedly connected to the bottom of the central shaft.

9. The opening and closing clamping device according to claim 5, characterized in that The transmission unit is provided with at least three transmission arms in the circumferential direction. Each transmission arm extends outward at an inclination along the circumferential direction of the transmission unit. Each transmission arm has a transmission inclined surface on its outer side. The transmission inclined surface is used to contact the mating surface, so that the movement of the transmission block is converted into the radial swing of the gripper block, thereby realizing the opening and closing action of the gripper.

10. The opening and closing clamping device according to claim 1, characterized in that The air passage interface is provided with several, and each air passage interface is connected to a different chamber, which is used to drive the central shaft to move by controlling the air pressure difference of each chamber.

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