Gripper device with overload float protection

Abstract

This utility model discloses a gripping device with overload floating protection, including a drive module and a gripping module. The gripping module includes a gripping component and a floating protection component. The floating protection component includes a pressure sensor, a slide rail slider, and a buffer. The pressure sensor is mounted on the top of the gripping component, the slide rail slider is slidably connected to the gripping component, and the buffer is connected above the pressure sensor. When the pressure sensor detects a pressure value exceeding a threshold, the drive module stops driving the gripping module to lift or lower, the buffer moves upward, and the gripping component slides and floats upward. This utility model's gripping device with floating overload protection uses a pressure sensor to detect overload conditions more promptly. Through the cooperation of the buffer and the slide rail slider, it provides floating protection for the gripping component, effectively solving the problem of time delay between overload detection and protective measures. It also avoids the situation where, after traditional overload detection and shutdown, the gripping module continues to apply excessive pressure to the product.

Description

Technical Field

[0001] This utility model relates to the field of automated material clamping technology, and in particular to a clamping device with overload floating protection. Background Technology

[0002] Most existing gripping devices employ rigid gripping methods. During the gripping process, when the gripping module presses against the product, it generates a significant impact force. This impact force not only damages the product but can also cause impact and vibration to the gripping device itself, affecting its lifespan. Therefore, in automated production processes, it is required that the gripping device can detect and activate protective measures when overload occurs. However, there is a certain time delay between overload detection and the implementation of protective measures. This delay may cause the gripping module to continue applying excessive pressure to the product, resulting in irreparable damage. Utility Model Content

[0003] To achieve the above objectives, this utility model provides a gripping device with overload floating protection, which can detect overload in a timely manner and solve the problem that the gripping module continues to apply excessive pressure to the product after the overload shutdown.

[0004] The technical solution adopted in this utility model is as follows:

[0005] A gripping device with overload floating protection includes a drive module and a gripping module. The drive module is connected to the gripping module and is used to drive the gripping module to perform lifting and lowering movements. The gripping module includes a gripping component and a floating protection component. The floating protection component includes a pressure sensor, a slide rail slider, and a buffer. The pressure sensor is mounted on the top of the gripping component and detects the pressure on the gripping component. The slide rail slider is slidably connected to the gripping component. The buffer is connected above the pressure sensor. The pressure sensor and the drive module are connected to an external control system. When the pressure sensor detects a pressure value exceeding a threshold, the drive module stops driving the gripping module to lift and lower, the buffer moves upward, and the gripping component slides and floats upward.

[0006] In a preferred embodiment, the drive module is provided with a mounting plate, the clamping module is connected and fixed to the mounting plate, the mounting plate is provided with a buffer fixing block, and the buffer fixing block is connected to the buffer.

[0007] In a preferred embodiment, the buffer is a pen-shaped cylinder, which includes a cylinder body and a piston rod. One end of the piston rod is connected to the cylinder body, and the other end of the piston rod is connected to the pressure sensor. The buffer fixing block is provided with a through hole, and the piston rod is sleeved on the through hole.

[0008] In a preferred embodiment, the buffer is a spring, one end of which is connected to the pressure sensor, and the other end of which is connected to the buffer fixing block.

[0009] In a preferred embodiment, a mounting platform is provided between the tops of the clamping components, the pressure sensor is bolted to the mounting platform, and an elastic gasket is provided between the mounting platform and the pressure sensor.

[0010] In a preferred embodiment, the contact area of ​​the clamping module that fits the product is provided with an anti-slip flexible layer.

[0011] The beneficial effects of this utility model are as follows:

[0012] This utility model discloses a gripping device with floating overload protection. A pressure sensor is installed on the top of the gripping assembly to detect the upward pressure of the gripping module in real time. A buffer is connected above the pressure sensor. When the gripping assembly is subjected to the upward reaction force of the product, the buffer can move upward under the pressure, and the gripping assembly also slides and floats. This floating mechanism allows the gripping module to stop lifting and lowering at the same time, thus relieving the overload pressure. This effectively reduces the impact force exerted on the product when the gripping assembly presses on it. In this way, the solution can detect overload conditions more promptly and respond to floating protection quickly. It effectively solves the problem of time delay between overload detection and protective measures in the prior art, and avoids the situation where the gripping module continues to apply excessive pressure to the product after the traditional overload detection and shutdown. Attached Figure Description

[0013] The accompanying drawings further illustrate the present invention, but the embodiments in the drawings do not constitute any limitation on the present invention.

[0014] Figure 1 A schematic diagram of a clamping device with overload floating protection according to an embodiment of this utility model;

[0015] Figure 2 A schematic diagram of another embodiment of the present invention is shown in the figure. Detailed Implementation

[0016] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0017] In the description of this utility model, it should be understood that the terms "upper", "lower", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" 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, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction 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.

[0019] like Figure 1 As shown, in one embodiment of a gripping device with overload floating protection, a drive module 100 and a gripping module 200 are included. The drive module 100 is connected to the gripping module 200 and is used to drive the gripping module 200 to perform lifting and lowering movements. The gripping module 200 includes a gripping component 210 and a floating protection component 220. The floating protection component 220 includes a pressure sensor 221, a slide rail slider 222, and a buffer 223. The pressure sensor 221 is mounted on the top of the gripping component 210. The slide rail slider 222 is slidably connected to the gripping component 210. The buffer 223 is connected above the pressure sensor 221. The pressure sensor 221 is used to detect the pressure on the gripping component 210. The pressure sensor 221 is connected to an external control system. When the pressure sensor 221 detects that the pressure value exceeds a threshold, the drive module 100 stops driving the gripping module 200 to perform lifting and lowering movements, the buffer 223 moves upward, and the gripping component 210 slides and floats upward.

[0020] It should be noted that the pressure sensor 221 is fixedly installed at the top of the gripping assembly 210 to detect the upward pressure on the gripping module 200 in real time; the buffer 223 is connected above the pressure sensor 221. When the pressure value detected by the pressure sensor 221 exceeds a preset threshold, the pressure sensor 221 transmits a signal to the control system to control the drive module 100 to stop the current lifting action of the gripping module 200. At the same time, the buffer 223 moves upward, and the gripping assembly 210 slides and floats up.

[0021] This design provides floating pressure adjustment and protection when the product is pressed during the gripping process. In the initial state, the gripping assembly 210 is in the position to grip the object. At this time, the gripping assembly 210 is in the preset starting position, the pressure sensor 221 is not subjected to obvious pressure, and its output electrical signal is within the initial value range, indicating that the gripping module 200 is not subjected to an upward reaction force. The buffer 223 is tightly connected to the pressure sensor 221 and has not moved upward. The drive module 100 drives the gripping module 200 to grip the product. During the gripping process, the gripping component 210 presses against the product, and the gripping component 210 will be subjected to an upward reaction force from the object. This force is transmitted through the gripping component 210 to the pressure sensor 221 connected to it. The pressure sensor 221 detects the upward pressure of the gripping component 210 in real time. Based on the detected pressure value, it is compared with a preset pressure threshold. If the pressure value exceeds the set threshold, the floating overload protection will be triggered, and the drive module 100 will be controlled to stop driving the gripping module 200 to lift and lower. At the same time, the buffer 223 floats upward under the action of pressure, and the gripping component 210 slides upward to avoid the gripping module 200 remaining in an overload state after the lifting and lowering action stops, which could damage the product. When the overload is relieved, the buffer 223 returns to its initial position, the gripping component 210 resets, and the next gripping operation continues.

[0022] In other words, the clamping device with floating overload protection can detect the overload of the clamping component 210 in a timely manner through the setting of pressure sensor 221 and floating protection component 220, and quickly respond to the floating protection, so as to avoid the clamping component 210 continuing to apply excessive pressure to the product after the traditional device detects excessive pressure and stops.

[0023] It is understandable that when the clamping module 200 clamps an excessively heavy product, the clamping module 200 will also be subjected to the reaction force of the product. Therefore, this design can also be used for overload protection when clamping excessively heavy products during the clamping process.

[0024] To maintain the linearity of the buffer 223 during the buffering process, in this embodiment, the drive module 100 is provided with a mounting plate 110, and the clamping module 200 is connected and fixed to the mounting plate 110. The mounting plate 110 is provided with a buffer 223 fixing block, and the buffer 223 fixing block is connected to the buffer 223. In this way, the buffer 223 is connected to the buffer 223 fixing block, thereby preventing the buffer 223 and the clamping assembly 210 from shaking due to vibration during the upward movement when the clamping assembly 210 presses on the product.

[0025] In this embodiment, the buffer 223 is a pen-shaped cylinder, which includes a cylinder body 223a and a piston rod 223b. One end of the piston rod 223b is connected to the cylinder body 223a, and the other end of the piston rod 223b is connected to the pressure sensor 221. The buffer 223 fixing block is provided with a through hole, and the piston rod 223b is sleeved on the through hole.

[0026] It should be noted that the pen-shaped cylinder has good flexibility and buffering capacity. When providing floating protection for the gripping assembly 210, the piston rod 223b extends and retracts within the cylinder body 223a, combined with feedback from the pressure sensor 221, to dynamically adjust the pressure on the gripping assembly 210, thereby achieving a protective function. Specifically, when the gripping module 200 begins to descend and gradually approaches the target product, the pen-shaped cylinder is in its initial state, with the piston rod 223b having a certain extension length. At the moment the gripping assembly 210 contacts the product surface, due to factors such as potential deviations in product position, uneven surfaces, or rapid gripping speed, a significant impact force is generated. This force is transmitted to the pressure sensor 221. Once the pressure sensor 221 detects that the pressure exceeds a threshold, the piston rod 223b of the pen-shaped cylinder further compresses into the cylinder body 223a, absorbing some of the impact energy, thereby reducing the pressure on the product through this compression motion. Furthermore, the piston rod 223b is fitted onto the through hole of the buffer 223 fixing block. During the operation of the pen-shaped cylinder, the piston rod 223b needs to extend and retract within the cylinder body 223a to absorb impact energy and regulate pressure. The through hole provides a precise path for the extension and retraction of the piston rod 223b, allowing it to move along this predetermined path, ensuring accuracy and stability. This helps prevent the piston rod 223b from shifting or wobbling during movement. On the other hand, when the clamping assembly 210 contacts the product surface and generates impact force, the piston rod 223b may be subjected to significant lateral forces or torques. By fitting onto the through hole, the buffer 223 fixing block can resist these forces, preventing unnecessary displacement or deformation of the piston rod 223b, thereby maintaining the stability and safety of the entire system.

[0027] In another embodiment, such as Figure 2 The buffer 223 is a spring 223c. One end of the spring 223c is connected to the pressure sensor 221, and the other end of the spring 223c is connected to the fixing block of the buffer 223.

[0028] Understandably, in the initial state, spring 223c is at its natural length or has a certain pre-compression according to design requirements. At this time, one end of spring 223c is connected to pressure sensor 221, and the other end is connected to the buffer 223 fixing block. The entire floating assembly is in a relatively stable equilibrium state, waiting for the gripping module 200 to begin descending and approaching the product. When the gripping module 200 descends and the gripping assembly 210 presses against the product, the resulting impact force will first act on the gripping assembly 210, and then be transmitted to spring 223c through the structure connected to the gripping assembly 210. Spring 223c is compressed, and the gripping assembly 210 moves upward. Pressure sensor 221 detects the pressure on spring 223c in real time. If the detected pressure exceeds the threshold, the control system will take corresponding measures.

[0029] To further ensure that the pressure sensor 221 can accurately sense the pressure applied to the clamping assembly 210 and obtain accurate data, a mounting platform 211 is provided between the tops of the clamping assembly 210, and the pressure sensor 221 is bolted to the mounting platform 211. The mounting platform 211 provides a stable and level mounting platform for the pressure sensor 221, avoiding measurement errors caused by uneven mounting surfaces. The bolted connection tightly fixes the pressure sensor 221 to the horizontal block, effectively and simply bearing the vibration and impact generated by the clamping force, preventing the sensor from loosening or shifting, and ensuring the structural stability of the entire clamping module 200.

[0030] To reduce the impact of stress caused by installation errors or vibration on the pressure sensor 221, ensure the accuracy of pressure detection, and maintain the linearity of the floating component, an elastic gasket may be provided between the mounting platform 211 and the pressure sensor 221.

[0031] To prevent localized pressure changes caused by product slippage or shaking during transportation, the contact area of ​​the gripping module 200 that contacts the product is provided with an anti-slip flexible layer 212. Specifically, in some embodiments, the contact area is wrapped with an elastic material, the surface of which is provided with an anti-slip texture. In this way, on the one hand, the elastic material allows the shape of the contact surface to be optimized according to the shape of the product, so that it better conforms to the product and reduces localized pressure changes caused by shaking; on the other hand, the anti-slip texture can increase friction and prevent the product from slipping during transportation after being gripped.

[0032] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0033] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they 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 these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A clamping device with overload floating protection, comprising a driving module and a clamping module, the driving module is connected with the clamping module, the driving module is used for driving the clamping module to perform lifting movement, characterized in that, The clamping module includes a clamping component and a floating protection component. The floating protection component includes a pressure sensor, a slide rail slider, and a buffer. The pressure sensor is mounted on the top of the clamping component and is used to detect the pressure on the clamping component. The slide rail slider is slidably connected to the clamping component. The buffer is connected above the pressure sensor. The pressure sensor is connected to an external control system via a drive module. When the pressure sensor detects a pressure value exceeding a threshold, the drive module stops driving the clamping module to perform lifting and lowering actions, the buffer moves upward, and the clamping component slides and floats upward.

2. The pinch device with overload float protection of claim 1, wherein, The drive module is provided with a mounting plate, the clamping module is connected and fixed to the mounting plate, the mounting plate is provided with a buffer fixing block, and the buffer fixing block is connected to the buffer.

3. The pinch device with overload float protection of claim 2, wherein, The buffer component is a pen-shaped cylinder, which includes a cylinder body and a piston rod. One end of the piston rod is connected to the cylinder body, and the other end of the piston rod is connected to the pressure sensor. The buffer component fixing block is provided with a through hole, and the piston rod is sleeved on the through hole.

4. The clamping device with overload floating protection according to claim 2, characterized in that, The buffer is a spring, one end of which is connected to the pressure sensor, and the other end of which is connected to the buffer fixing block.

5. The clamping device with overload floating protection according to claim 1, characterized in that, A mounting platform is provided between the tops of the clamping components, and the pressure sensor is bolted to the mounting platform.

6. The clamping device with overload floating protection according to claim 5, characterized in that, An elastic gasket is provided between the mounting platform and the pressure sensor.

7. The clamping device with overload floating protection according to claim 1, characterized in that, The contact area of ​​the clamping module that fits the product is provided with an anti-slip flexible layer.

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