Flexible clamping jaw for heat-conducting silica gel sheet

Abstract

The utility model discloses a flexible clamping jaw for a heat conduction silica gel sheet, which comprises a flexible clamping finger and a bending driving mechanism, the flexible clamping finger comprises a clamping finger body, the bending driving mechanism comprises an air bag, a fixed pulley, a fixed arm and a rotating arm, the fixed arm and the rotating arm are arranged at the lower part of the clamping finger body, and the air bag is arranged on the fixed pulley. The fixed arm is fixedly connected with the clamping finger body, one end of the rotating arm is rotationally connected with the fixed arm, the other end of the rotating arm is fixedly connected with the bottom of the clamping finger body, the piston is located on one side of the fixed arm and the rotating arm, one end of the cable is fixedly connected with the upper portion of the air bag, and the other end of the cable is fixedly connected with the piston. According to the structure, the air bag, the fixed pulley, the fixed arm, the rotating arm and other assemblies are adopted, the bending action of the flexible clamping fingers is achieved through transmission of the cable and the piston, the structure is simple, operation is flexible, and the device can adapt to heat conduction silica gel sheets of different sizes and thicknesses.

Description

Technical Field

[0001] This utility model relates to the field of grippers, and in particular to a flexible gripper for thermally conductive silicone sheets. Background Technology

[0002] Thermal conductive silicone pads are characterized by their soft texture, ease of deformation, and strong surface adhesion. Currently, there are two main methods for handling thermal conductive silicone pads: First, using hands to pick them up and place them; second, using traditional grippers for automated picking and placing. Both methods have the following disadvantages:

[0003] When taking it by hand:

[0004] ① When holding the thermal conductive silicone pad, large thermal conductive silicone pads should be grasped from the center. Smaller pads do not require grasping from the center. This is because uneven force on large thermal conductive silicone pads can cause deformation, affecting subsequent operations or even damaging the thermal conductive silicone pad.

[0005] ② When handling the thermal conductive silicone pad, dirt may stick to it due to additional tools or other means. Dirty thermal conductive silicone pads will have poor self-adhesion and sealing thermal conductivity.

[0006] ③ When the size is small, it is difficult to align the thermal conductive silicone with the heat sink, which will affect heat dissipation.

[0007] When using traditional grippers:

[0008] ① Traditional grippers are prone to causing material stretching and deformation.

[0009] ② Vacuum adsorption may lead to surface contamination.

[0010] ③ It is difficult to adjust the gripping force when the thickness changes.

[0011] ④ It cannot meet the high-precision assembly requirement of ±0.1mm. Utility Model Content

[0012] The technical problem solved by this utility model is to provide a flexible gripper for thermally conductive silicone sheets that prevents damage to the sheets during handling.

[0013] The technical solution adopted by this utility model to solve its technical problem is: a flexible gripper for thermally conductive silicone pads, characterized in that: it includes a mounting frame, the bottom of which is provided with a plurality of flexible gripping fingers for gripping thermally conductive silicone pads, and also includes a bending drive mechanism for driving the flexible gripping fingers to bend.

[0014] The flexible finger clamp includes a finger clamp body. The bending drive mechanism is installed in the inner cavity of the finger clamp body. The bending drive mechanism includes an air bladder, a fixed pulley, a fixed arm, and a rotating arm. The bottom of the air bladder is fixedly connected to the finger clamp body. The fixed pulley is fixedly connected to the finger clamp body. The fixed arm and the rotating arm are located at the lower part of the finger clamp body. The fixed arm is fixedly connected to the finger clamp body. One end of the rotating arm is rotatably connected to the fixed arm. The other end of the rotating arm is fixedly connected to the bottom of the finger clamp body. The mechanism also includes a piston and a cable. The piston is located on one side of the fixed arm and the rotating arm. One end of the cable is fixedly connected to the upper part of the air bladder. The other end of the cable passes around the fixed pulley and is fixedly connected to the upper end of the piston. The mechanism also includes a tension arm. One end of the tension arm is rotatably connected to the lower end of the piston. The other end of the tension arm is rotatably connected to the middle part of the rotating arm.

[0015] Furthermore, it also includes a limiting rod, one end of which is fixedly connected to the fixed arm, and the other end of which is provided with a limiting ball. The piston is provided with a vertical groove, and the limiting ball is located in the vertical groove, so that the piston can only move up and down under the limiting action of the limiting ball.

[0016] Furthermore, the clamp body is made of corrugated pipe material.

[0017] Furthermore, a silicone layer is provided on the clamping surface of the finger clamp body.

[0018] Furthermore, the surface of the silicone layer is provided with a Teflon coating.

[0019] Furthermore, a force sensor is provided on the surface of the Teflon coating, and the force sensor is located at the lower end of the flexible gripper finger.

[0020] Furthermore, a position sensor for detecting piston height is provided at the upper end of the piston, and the position sensor is fixedly connected to the flexible gripper finger.

[0021] Furthermore, the mounting frame is equipped with a detection camera for positioning the product, and a hollow fixing column is provided on the mounting frame. A gas connecting pipe is inserted inside the hollow fixing column, and the gas connecting pipe is connected to the airbag.

[0022] The beneficial effects of this utility model are:

[0023] 1. The flexible gripper design can adapt to the soft and deformable characteristics of the thermal conductive silicone sheet, avoiding material stretching and deformation during the gripping process, and effectively protecting the integrity of the thermal conductive silicone sheet.

[0024] 2. The bending drive mechanism uses components such as airbags, fixed pulleys, fixed arms and rotating arms. Through the transmission of cables and pistons, it realizes the bending action of flexible finger clamps. The structure is simple and the operation is flexible. It can adapt to thermal conductive silicone sheets of different sizes and thicknesses.

[0025] 3. The design of the limit rod and limit ball ensures the stability of the piston during the lifting and lowering process, avoiding inaccurate clamping caused by piston shaking.

[0026] 4. The gripper body is made of corrugated tubing, which has good flexibility and elasticity, and can adapt to the shape changes of the thermally conductive silicone sheet, improving the accuracy and stability of gripping.

[0027] 5. The silicone layer and Teflon coating on the clamping surface not only increase the friction between the clamping fingers and the thermally conductive silicone sheet to prevent slippage, but also prevent the surface of the thermally conductive silicone sheet from being contaminated, maintaining its self-adhesion and sealing thermal conductivity.

[0028] 6. The installation of force and position sensors can monitor the force and piston height during the clamping process in real time, ensuring precise control of the clamping action and improving assembly accuracy and efficiency. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the flexible gripper for a thermally conductive silicone sheet according to an embodiment of this application.

[0030] Figure 2 This is a schematic diagram of the flexible gripper fingers of the flexible gripper used for thermally conductive silicone pads according to an embodiment of this application.

[0031] Figure 3 This is a diagram showing the state of the flexible gripper of the flexible claw for the thermally conductive silicone sheet in an embodiment of this application when the flexible gripper finger is bent.

[0032] Figure 4 This is an exploded view of the flexible gripper fingers of the flexible claw used for thermally conductive silicone pads according to an embodiment of this application.

[0033] The components in the diagram are labeled as follows: mounting bracket 1, flexible gripper finger 2, gripper finger body 21, airbag 22, fixed pulley 23, fixed arm 24, rotating arm 25, piston 26, cable 27, tension arm 28, limit rod 29, limit ball 210, vertical groove 211, silicone layer 212, Teflon coating 213, force sensor 214, position sensor 215, hollow fixed column 3, and gas connection pipe 4. Detailed Implementation

[0034] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0035] like Figure 1As shown, an embodiment of this application discloses a flexible gripper for thermally conductive silicone pads, including a mounting frame 1. The bottom of the mounting frame 1 is provided with a plurality of flexible gripping fingers 2 for gripping thermally conductive silicone pads, and also includes a bending drive mechanism for driving the flexible gripping fingers 2 to bend.

[0036] The flexible finger clamp 2 includes a finger clamping body 21. A bending drive mechanism is installed inside the finger clamping body 21. The bending drive mechanism includes an air bladder 22, a fixed pulley 23, a fixed arm 24, and a rotating arm 25. The bottom of the air bladder 22 is fixedly connected to the finger clamping body 21. The fixed pulley 23 is fixedly connected to the finger clamping body 21. The fixed arm 24 and the rotating arm 25 are located at the lower part of the finger clamping body 21. One end of the rotating arm 25 is connected to the fixed arm 24. 4. Rotary connection: The other end of the rotating arm 25 is fixedly connected to the bottom of the finger clamp body 21. It also includes a piston 26 and a cable 27. The piston 26 is located on one side of the fixed arm 24 and the rotating arm 25. One end of the cable 27 is fixedly connected to the upper part of the airbag 22. The other end of the cable 27 passes around the fixed pulley 23 and is fixedly connected to the upper end of the piston 26. It also includes a tension arm 28. One end of the tension arm 28 is rotatably connected to the lower end of the piston 26. The other end of the tension arm 28 is rotatably connected to the middle part of the rotating arm 25.

[0037] It should be explained that two flexible clamping fingers 2 are used to grip the thermally conductive silicone sheet, and the cable 27 is made of ultra-high molecular weight polyethylene.

[0038] Specifically, when it is necessary to release the product, positive pressure is applied to the airbag 22, the pressure inside the airbag 22 increases, and the fixed pulley 23 drives the cable 27 to move. The cable 27 drives the piston 26 to descend. At this time, the entire bending drive mechanism is not under force, the rotating arm 25 and the fixed arm 24 are in a vertical state, that is, the flexible gripper 2 is in an open state, releasing the object.

[0039] When it is necessary to clamp the product, negative pressure is applied to the airbag 22, the pressure inside the airbag 22 decreases, and the fixed pulley 23 drives the cable 27 to move. The cable 27 drives the piston 26 to move upward, so that the tension arm 28 at the bottom of the piston 26 pulls the rotating arm 25 to rotate, so that the flexible gripper 2 can cover the outer surface of the object to achieve stable gripping.

[0040] The above-described structure enables precise and non-destructive gripping and placement of thermally conductive silicone sheets. Compared to traditional manual gripping and conventional clamps, the flexible clamps of this invention, through their unique bending drive mechanism, can flexibly adjust the bending degree of the gripping fingers to adapt to thermally conductive silicone sheets of different sizes and thicknesses.

[0041] In this embodiment, a limiting rod 29 is also included. One end of the limiting rod 29 is fixedly connected to the fixed arm 24, and the other end of the limiting rod 29 is provided with a limiting ball 210. A vertical groove 211 is provided inside the piston 26, and the limiting ball 210 is located in the vertical groove, so that the piston 26 can only move up and down under the limiting action of the limiting ball 210.

[0042] Specifically, when the limit rod 29 is raised or lowered, the limit ball 210 moves up and down relative to the vertical groove 211 to ensure the stable movement of the piston 26 in the vertical direction and prevent the piston 26 from shifting or wobbling in the left or right position during the raising and lowering process, thereby improving the stability and reliability of the gripper.

[0043] In addition, the design of the limit rod 29 and the limit ball 210 can effectively prevent the piston 26 from rising and falling excessively, which could damage the bending drive mechanism and extend the service life of the gripper.

[0044] In this embodiment, the gripper body 21 is made of corrugated tubing, which has good flexibility and elasticity, and can adapt to the deformation of the thermally conductive silicone sheet, avoiding damage to the thermally conductive silicone sheet during gripping. At the same time, the corrugated tubing material also has good wear resistance and corrosion resistance, and can maintain stable performance in harsh working environments.

[0045] In this embodiment, a silicone layer 212 is provided on the gripping surface of the gripper body 21. The silicone layer 212 has excellent self-adhesion and sealing properties, which can tightly adhere to the thermally conductive silicone sheet and prevent the thermally conductive silicone sheet from slipping or being damaged during gripping. In addition, the silicone layer 212 also has good temperature resistance and aging resistance, and can maintain good performance even after high temperature or long-term use.

[0046] Furthermore, a Teflon coating 213 is provided on the surface of the silicone layer 212. The Teflon coating 213 has an extremely low coefficient of friction and good lubricity, which can reduce the friction between the gripper and the thermally conductive silicone sheet, reduce the resistance during the gripping process, and make it easier for the gripper to grip the thermally conductive silicone sheet. At the same time, the Teflon coating 213 also has excellent corrosion resistance and high temperature resistance, and can maintain stable performance in harsh working environments.

[0047] In this embodiment, a force sensor 214 is provided on the surface of the Teflon coating 213, and the force sensor 214 is located at the lower end of the flexible gripper finger 2.

[0048] Specifically, when the flexible gripper 2 clamps the product, the force sensor 214 can monitor the magnitude of the clamping force in real time to ensure that the clamping force is moderate, preventing damage to the thermally conductive silicone sheet due to excessive clamping force, and preventing the thermally conductive silicone sheet from slipping due to insufficient clamping force. This design improves the accuracy and safety of the gripper when grasping the thermally conductive silicone sheet.

[0049] In this embodiment, a position sensor 215 for detecting the height of the piston 26 is provided at the upper end of the piston 26, and the position sensor 215 is fixedly connected to the flexible gripper finger 2.

[0050] Specifically, by detecting changes in the height of piston 26, the degree of bending of flexible gripper finger 2 can be indirectly determined, thereby achieving precise control over the gripper's grasping action. This design allows the gripper to automatically adjust its grasping posture according to different sizes of thermally conductive silicone sheets, improving the gripper's adaptability and flexibility.

[0051] In this embodiment, the mounting frame 1 is equipped with a detection camera for positioning the product, and the mounting frame 1 is equipped with a hollow fixing column 3. A gas connecting pipe 4 is inserted inside the hollow fixing column 3, and the gas connecting pipe 4 is connected to the airbag 22.

[0052] Specifically, during the gripping process, a detection camera identifies and locates the target object, guiding the flexible gripper to move to the product for gripping, thus improving the automation level and gripping accuracy of the gripper. Simultaneously, the design of the hollow fixing post 3 and the gas connecting pipe 4 allows the airbag 22 to be easily connected to a gas source, enabling the inflation and deflation of the airbag 22 and simplifying the gripper's operation.

[0053] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A flexible gripper for thermally conductive silicone pads, characterized in that: It includes a mounting frame (1), the bottom of which is provided with a plurality of flexible gripping fingers (2) for gripping thermally conductive silicone sheets, and also includes a bending drive mechanism for driving the flexible gripping fingers (2) to bend. The flexible finger clamp (2) includes a finger clamp body (21). The bending drive mechanism is installed in the inner cavity of the finger clamp body (21). The bending drive mechanism includes an air bladder (22), a fixed pulley (23), a fixed arm (24), and a rotating arm (25). The bottom of the air bladder (22) is fixedly connected to the finger clamp body (21). The fixed pulley (23) is fixedly connected to the finger clamp body (21). The fixed arm (24) and the rotating arm (25) are located at the lower part of the finger clamp body (21). The fixed arm (24) is fixedly connected to the finger clamp body (21). One end of the rotating arm (25) is connected to the fixed arm (22). 4) Rotary connection: The other end of the rotating arm (25) is fixedly connected to the bottom of the finger clamp body (21). It also includes a piston (26) and a cable (27). The piston (26) is located on one side of the fixed arm (24) and the rotating arm (25). One end of the cable (27) is fixedly connected to the upper part of the airbag (22). The other end of the cable (27) passes around the fixed pulley (23) and is fixedly connected to the upper end of the piston (26). It also includes a tension arm (28). One end of the tension arm (28) is rotatably connected to the lower end of the piston (26). The other end of the tension arm (28) is rotatably connected to the middle part of the rotating arm (25).

2. The flexible gripper for thermally conductive silicone pads as described in claim 1, characterized in that: It also includes a limiting rod (29), one end of which is fixedly connected to the fixed arm (24), and the other end of which is provided with a limiting ball (210). The piston (26) is provided with a vertical groove (211), and the limiting ball (210) is located in the vertical groove, so that the piston (26) can only move up and down under the limiting action of the limiting ball (210).

3. The flexible gripper for thermally conductive silicone pads as described in claim 1, characterized in that: The finger clip body (21) is made of corrugated pipe material.

4. The flexible gripper for thermally conductive silicone pads as described in claim 1, characterized in that: A silicone layer (212) is provided on the clamping surface of the finger clamp body (21).

5. The flexible gripper for thermally conductive silicone pads as described in claim 4, characterized in that: The surface of the silicone layer (212) is provided with a Teflon coating (213).

6. The flexible gripper for thermally conductive silicone pads as described in claim 5, characterized in that: A force sensor (214) is disposed on the surface of the Teflon coating (213), and the force sensor (214) is located at the lower end of the flexible gripper (2).

7. The flexible gripper for thermally conductive silicone pads as described in claim 5, characterized in that: The upper end of the piston (26) is provided with a position sensor (215) for detecting the height of the piston (26), and the position sensor (215) is fixedly connected to the flexible gripper (2).

8. The flexible gripper for thermally conductive silicone pads as described in claim 1, characterized in that: The mounting frame (1) is equipped with a detection camera for positioning the product. The mounting frame (1) is also equipped with a hollow fixing column (3). A gas connecting pipe (4) is inserted inside the hollow fixing column (3). The gas connecting pipe (4) is connected to the airbag (22).

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