Thermal conductivity detection device for high-elasticity heat-conducting silica gel sheet

Abstract

The invention relates to the technical field of heat-conducting silica gel sheet detection, in particular to a high-elasticity heat-conducting silica gel sheet thermal conductivity detection device which comprises a detection base, a detection pressure group and a bearing seat. A vertical frame and a control panel are fixedly installed on the surface of the detection base, and a plurality of first driving rods are fixedly installed on the bottom face of the vertical frame and used for driving the detection pressing set to ascend and descend. The detection pressing group comprises a driving disc, a lower pressing disc and an elastic pressing disc, the elastic pressing disc is fixed to the inner side of the driving disc, the lower pressing disc is slidably installed on the bottom face of the driving disc and abuts against the elastic pressing disc, and a plurality of temperature detection blocks are embedded in the top face of the lower pressing disc and used for independently detecting the temperature of the corresponding sample. The bearing seat comprises a heating box and a bearing ring seat, and an electric heating disc is embedded in the bearing ring seat. The detection device provided by the invention supports consistency comparative analysis of thermal conductivity of heat-conducting silica gel sheet samples produced in different batches and in different production modes, provides efficient, visual and accurate detection results, and provides reliable support for product quality control and performance evaluation.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal conductive silicone sheet detection, in particular to a thermal conductivity detection device for a high-elasticity thermal conductive silicone sheet. Background Art

[0002] In traditional thermal conductivity testing technology for thermally conductive silicone sheets, a single-piece testing method is usually used. A single piece of thermally conductive silicone sheet is placed between the heating end and the heated end through a clamping device. A certain pressure is applied to the silicone sheet, and a temperature sensor is used to measure the temperature difference between the heating end and the heated end to calculate the thermal conductivity of the silicone sheet. To ensure the reliability of the test, the traditional method requires manual adjustment of variables such as the temperature, pressure, and thickness of the thermally conductive silicone sheet to achieve multiple independent tests and conduct comparative analysis of the results. However, due to the limitations of the single-piece testing mode, only one silicone sheet sample can be tested at a time, resulting in low testing efficiency. At the same time, the structure of traditional testing devices is usually relatively simple, lacking the ability to uniformly control multiple samples, and it is impossible to compare the thermal conductivity performance of multiple samples at the same time.

[0003] Although traditional testing technology can complete the measurement of thermal conductivity of thermally conductive silicone sheets, it still has the following shortcomings: Low test efficiency: Traditional single-chip detection methods cannot achieve simultaneous measurement of multiple samples. Samples need to be tested piece by piece and then compared. This results in a long detection time and cannot meet the needs of efficient detection.

[0004] Inconsistent variable control and insufficient detection accuracy: Traditional technologies require manual adjustment of variables such as sample temperature, pressure, and thickness. This is difficult to control and can easily lead to inconsistent variable control, causing deviations in thermal conductivity measurement results and affecting the accuracy and reliability of test data.

[0005] The analysis of sample differences is not intuitive: The traditional detection method calculates thermal conductivity through a single temperature difference between the heating end and the heated end. The comparative analysis of the subtle differences in thermal conductivity between samples is not intuitive and lacks accuracy, making it difficult to effectively evaluate the performance consistency of thermal conductive silicone sheets produced in different batches and different production methods.

[0006] Therefore, the existing technology cannot well meet the needs of simultaneous measurement and comparative analysis of multiple silicone sheet samples, and there is still much room for improvement in detection accuracy, efficiency and consistency assessment. Summary of the Invention

[0007] The present invention aims to solve one of the technical problems existing in the prior art or related technologies.

[0008] To this end, the technical solution adopted in the present invention is: A thermal conductivity detection device for a high-elasticity thermal conductive silica gel sheet, comprising: a detection base, a detection pressing group and a bearing seat. A vertical frame and a control panel are fixedly installed on the surface of the detection base. A plurality of first driving rods are fixedly installed on the bottom surface of the vertical frame. A positioning seat is provided at the output end of the first driving rod, and the bottom end of the output end of the first driving rod is fixedly connected to the surface of the detection pressing group. A second driving rod is provided on the surface of the positioning seat. The bearing seat is fixedly installed on the surface of the detection base and is arranged opposite to the detection pressing group; In a possible implementation manner, the detection pressing group includes a driving disk, a lower pressing disk and an elastic pressing disk. The elastic pressing disk is fixed inside the driving disk. The lower pressing disk is slidably installed on the bottom surface of the driving disk and abuts against the bottom surface of the elastic pressing disk. A heating box and a bearing ring seat are fixedly installed on the top surface of the bearing seat. An electric heating disk electrically connected to the output end of the heating box is embedded inside the bearing ring seat. A plurality of temperature detection blocks are embedded on the top surface of the lower pressing disk. A plurality of sticking blocks for clamping the thermal conductive silica gel sheet are provided on the opposite surfaces of the lower pressing disk and the bearing ring seat; In a possible implementation manner, the elastic pressing disk includes a pressing ring, a supporting ring and a plurality of warping pieces. The supporting ring is movably installed inside the driving disk and can deflect. One end of the warping piece is movably connected to the output end of the second driving rod, and the other end of the warping piece is connected to the surface of the supporting ring. The pressing ring is distributed on the outer periphery of the supporting ring and abuts against the top surface of the temperature detection block.

[0009] In a possible implementation manner, the lower pressing disk is a component made of a material with low thermal conductivity, and the sticking blocks on the surface of the lower pressing disk are evenly spaced. Each sticking block is connected to each temperature detection block in a one-to-one correspondence.

[0010] In a possible implementation manner, the pressing ring, the warping pieces and the supporting ring are of an integrally formed structure, and a plurality of warping pieces are evenly distributed in the circumferential direction.

[0011] In a possible implementation manner, a plurality of guiding blocks are fixedly installed on the outer periphery of the lower pressing disk. A guiding groove for the guiding blocks to slide is provided on the surface of the driving disk. The guiding groove is used to guide the guiding blocks to slide in the direction perpendicular to the surface of the bearing ring seat.

[0012] In a possible implementation manner, the number of the first driving rods is several, which is used to realize the horizontal lifting drive of the detection pressing group under synchronous control. The second driving rod is used to control the elastic deflection of the warping pieces through telescopic movement.

[0013] In a possible implementation manner, the temperature detection blocks on the top surface of the lower pressing disk are in a convex shape, and the top surfaces of each temperature detection block are located on the same horizontal plane for synchronously abutting against the bottom surface of the pressing ring.

[0014] In a possible implementation, a power control module is provided inside the heating box for controlling the heating power of the electric hot plate, and a temperature detection module is provided on the surface of the electric hot plate for real-time sensing of the temperatures of the bearing ring seat and the surface of the electric hot plate.

[0015] In a possible implementation, the control panel is used to adjust the lifting speed of the first driving rod and the telescopic amplitude of the second driving rod, and the control panel is built-in with a data analysis module for processing the signal data of the temperature detection module of the electric hot plate and the temperature detection block.

[0016] Based on the above technical solutions, a high-elasticity thermally conductive silicone sheet thermal conductivity detection device of the present invention realizes synchronous clamping and thermal conductivity detection of multiple thermally conductive silicone sheet samples through the design of the sticking blocks of the detection pressure group and the bearing seat, accurately controls variables such as temperature, pressure, and thickness, and can support synchronous measurement and result comparison of thermally conductive silicone sheet samples produced in different batches and different production methods, providing intuitive and accurate thermal conductivity performance difference data, thereby improving the detection efficiency and result reliability, and providing effective support for product consistency evaluation and quality control.

[0017] The beneficial effects obtained by the present invention are as follows: 1. In the present invention, through the design of the sticking blocks of the detection pressure group and the bearing seat, the device can simultaneously perform synchronous clamping and thermal conductivity detection on multiple thermally conductive silicone sheet samples. Each temperature detection block independently detects the temperature of the corresponding patch, which can effectively isolate the heat conduction interference of each detection station. Furthermore, variables such as temperature, pressure, and thickness can be accurately controlled during synchronous detection, and it can support synchronous measurement and result comparison of thermally conductive silicone sheet samples produced in different batches and different production methods, providing more intuitive and accurate thermal conductivity performance difference data, and providing effective support for product consistency evaluation and quality control.

[0018] 2. In the present invention, the telescopic movement of the second driving rod drives the deflection of the warping piece, thereby realizing the application of precise and adjustable pressure to the thermally conductive silicone sheet, enabling effective thermal conductivity detection under different thickness states, and meeting the test requirements under various pressure and thickness conditions.

[0019] 3. In the present invention, the pressure ring, warping piece, and support ring of the elastic pressing plate are integrally formed, which improves the overall strength and structural stability of the device. The unified pressure control of several detection samples accurately controls variables such as temperature, pressure, and thickness during synchronous detection, avoiding measurement deviation of thermal conductivity caused by difficult-to-unify variable control, thereby improving the measurement accuracy and result reliability. Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2Schematic diagram of the detection pressure group and the bearing seat structure according to an embodiment of the present invention; Figure 3 Exploded structural schematic diagram of the detection pressure group according to an embodiment of the present invention; Figure 4 Schematic diagram of the lower pressure plate and the elastic pressure plate structure according to an embodiment of the present invention; Figure 5 Schematic diagram of the bearing ring seat and the electric heating plate structure according to an embodiment of the present invention; Figure 6 Schematic diagram of the opposite surfaces of the lower pressure plate and the bearing ring seat according to an embodiment of the present invention; Figure 7 Cross-sectional structural schematic diagram of the elastic pressure plate according to an embodiment of the present invention.

[0021] Reference numerals: 100, detection base; 110, vertical frame; 120, control panel; 130, first drive rod; 140, second drive rod; 131, positioning seat; 200, detection pressure group; 210, drive disk; 220, lower pressure plate; 230, elastic pressure plate; 221, guide block; 222, temperature detection block; 231, pressure ring; 232, fin; 233, support ring; 300, bearing seat; 310, heating box; 320, bearing ring seat; 321, electric heating plate. Detailed description of the embodiments

[0022] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with the specific embodiments and with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0023] It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention.

[0024] Below in conjunction with the attached Figures 1 to 7 Describe a high-elasticity thermal conductive silica gel sheet thermal conductivity detection device provided by some embodiments of the present invention.

[0025] Embodiment 1: Device structure As Figures 1 to 7 shown, a high-elasticity thermal conductive silica gel sheet thermal conductivity detection device of the present invention includes a detection base 100, a detection pressure group 200 and a bearing seat 300.

[0026] Among them, a vertical frame 110 and a control panel 120 are fixedly installed on the surface of the detection base 100. A number of first driving rods 130 are installed on the bottom surface of the vertical frame 110, which are used to drive the vertical lifting of the detection pressing group 200; the output end of the first driving rod 130 is connected with a positioning seat 131, and a second driving rod 140 is arranged on its surface, which is used to adjust the pressure action of the detection pressing group 200.

[0027] The bearing seat 300 is fixedly installed on the surface of the detection base 100 and is arranged opposite to the detection pressing group 200. A heating box 310 and a bearing ring seat 320 are installed on the top surface of the bearing seat 300. An electric heating plate 321 electrically connected to the heating box 310 is embedded in the bearing ring seat 320, and a heat equalizing ring is arranged inside, which is used to realize the uniform distribution of surface heat during the heating process, ensuring that each patch area on the surface of the bearing ring seat 320 reaches an isothermal state.

[0028] The detection pressing group 200 includes: a driving disk 210, a lower pressing disk 220 and an elastic pressing disk 230.

[0029] The elastic pressing disk 230 is fixedly installed inside the driving disk 210; the lower pressing disk 220 is slidably installed at the bottom of the driving disk 210, and its bottom surface abuts against the elastic pressing disk 230. To achieve stable clamping, the elastic pressing disk 230 includes a pressing ring 231, a number of warping pieces 232 and a supporting ring 233. The supporting ring 233 can be movably installed inside the driving disk 210 and realize a deflection movement. A number of warping pieces 232 are evenly distributed in the circumferential direction, one end is connected to the second driving rod 140, and the other end is connected to the supporting ring 233. By deflecting the warping pieces 232, the pressure change of the supporting ring 233 can be driven, and then the downward pressure of the pressing ring 231 can be adjusted.

[0030] The above structure can realize the contact adjustment between the pressing ring 231 and the lower pressing disk 220 through the linkage of the warping pieces 232 and the second driving rod 140, so as to apply precise pressure to the thermal conductive silica gel sheet.

[0031] In addition, the pressing ring 231, the warping pieces 232 and the supporting ring 233 are of an integrally formed structure, which enhances the overall strength and structural stability, and helps to improve the clamping uniformity and the durability of the device.

[0032] Embodiment 2: Special design and improvement The lower pressing disk 220 is made of a material with low thermal conductivity, and a number of convex temperature detection blocks 222 are embedded at the top, which are used to independently sense the heating temperature of each silica gel sample. The top surfaces of each temperature detection block 222 are located on the same horizontal plane, ensuring synchronous contact with the bottom surface of the pressing ring 231 and improving the temperature measurement accuracy. <>

[0033] In addition, several sticking blocks are provided on the surface of the lower pressing plate 220, which are opposite to the sticking blocks on the surface of the bearing ring seat 320 and are used to clamp the thermal conductive silica gel sheet. These sticking blocks are arranged at uniform intervals and correspond one by one to the corresponding temperature detection blocks 222 to ensure that the detection position and the temperature measurement position are strictly matched.

[0034] To ensure the guiding stability of the lower pressing plate 220, several guiding blocks 221 are fixedly installed on its outer periphery. A guiding groove is provided on the inner side of the driving disc 210 to limit the movement direction of the guiding blocks 221, so that the lower pressing plate 220 can maintain precise alignment with the surface of the bearing ring seat 320 during the sliding process in the vertical direction.

[0035] Working principle: Clamping and positioning of the thermal conductive silica gel sheet: Place several thermal conductive silica gel sheets to be detected on the sticking blocks on the surface of the bearing ring seat 320 respectively. Through the control panel 120, control the first driving rod 130 to drive the detection pressing group 200 to descend, so that the sticking blocks of the lower pressing plate 220 contact the upper surface of the thermal conductive silica gel sheet to complete the clamping and positioning.

[0036] Pressure adjustment: By controlling the telescopic movement of the second driving rod 140, drive the fin 232 to deflect, thereby forming a lever action on the support ring 233, so that the pressure ring 231 moves down or up, adjusting the pressure on the lower pressing plate 220, and further precisely controlling the pressure applied to the thermal conductive silica gel sheet during the clamping process to meet the thermal conductivity detection requirements under different pressure conditions.

[0037] Heating and temperature detection: Start the heating box 310, and the electric heating plate 321 heats the sticking blocks of the bearing ring seat 320 synchronously to form a stable heating end temperature field. The temperature of the heated end of each thermal conductive silica gel sheet is independently detected by the temperature detection block 222 on the lower pressing plate 220, so as to obtain the temperature difference between the heating end and the heated end.

[0038] Data processing and analysis: Through the data analysis module built in the control panel 120, receive the real-time signals of the temperature detection block 222 and the temperature detection module of the electric heating plate 321, compare the temperature difference and the temperature change rate between the heating end and the heated end, calculate the thermal conductivity of each thermal conductive silica gel sheet, and generate a data report. At the same time, through the independent detection function of each temperature detection block 222, the thermal conductivity performance differences between multiple silica gel sheets can be accurately analyzed, supporting the consistency evaluation of the performance of silica gel sheets in different batches.

[0039] Specific detection process: Sample preparation Place the thermal conductive silica gel sheets to be detected one by one on the sticking blocks of the bearing ring seat 320, ensuring that the upper and lower surfaces of the silica gel sheet are flat and fit with the sticking blocks.

[0040] Device operation Start the control panel 120, set the heating temperature, pressure parameters, and detection time, and complete the clamping and positioning of the silicone sheet and the pressure adjustment through the coordinated movement of the first drive rod 130 and the second drive rod 140.

[0041] Data acquisition and processing During the detection process, the electric heating plate 321 heats the patch on the bearing ring seat 320, the temperature detection block 222 detects the temperature of the heated end in real time, and the control panel 120 records the temperature difference data between the heating end and the heated end and calculates the thermal conductivity of the thermal conductive silicone sheet.

[0042] Result analysis and export The control panel 120 is built-in with a data analysis module. According to the detection data of multiple sample pieces, it generates a thermal conductivity performance report for each silicone sheet sample, intuitively analyzes the subtle thermal conductivity performance differences between samples, and provides support for product quality evaluation and consistency analysis.

[0043] Through the above structural design and implementation method, the present invention realizes the efficient, accurate, and independent thermal conductivity detection of multiple thermal conductive silicone sheet samples, has the advantages of high detection accuracy, high efficiency, and strong applicability, and provides an efficient and reliable solution for the production quality control of thermal conductive silicone sheets.

[0044] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A thermal conductivity detection device for a high-elasticity heat-conducting silicone sheet, characterized in that Comprising: A detection base (100), a detection pressing group (200) and a bearing seat (300). A vertical frame (110) and a control panel (120) are fixedly installed on the surface of the detection base (100). A plurality of first driving rods (130) are fixedly installed on the bottom surface of the vertical frame (110). A positioning seat (131) is provided at the output end of the first driving rod (130), and the bottom end of the output end of the first driving rod (130) is fixedly connected to the surface of the detection pressing group (200). A second driving rod (140) is provided on the surface of the positioning seat (131). The bearing seat (300) is fixedly installed on the surface of the detection base (100) and is arranged opposite to the detection pressing group (200); The detection pressing group (200) includes a driving disk (210), a lower pressing disk (220) and an elastic pressing disk (230). The elastic pressing disk (230) is fixed inside the driving disk (210). The lower pressing disk (220) is slidably installed on the bottom surface of the driving disk (210) and abuts against the bottom surface of the elastic pressing disk (230). A heating box (310) and a bearing ring seat (320) are fixedly installed on the top surface of the bearing seat (300). An electric heating disk (321) electrically connected to the output end of the heating box (310) is embedded inside the bearing ring seat (320). A plurality of temperature detection blocks (222) are embedded on the top surface of the lower pressing disk (220). A plurality of patches for clamping heat-conducting silica gel sheets are provided on the opposite surfaces of the lower pressing disk (220) and the bearing ring seat (320).

2. The thermal conductivity detection device for a highly elastic heat-conducting silica gel sheet according to claim 1, characterized in that, The elastic pressing disk (230) includes a pressing ring (231), a supporting ring (233) and a plurality of warping pieces (232). The supporting ring (233) is movably installed inside the driving disk (210) and can deflect. One end of the warping piece (232) is movably connected to the output end of the second driving rod (140), and the other end of the warping piece (232) is connected to the surface of the supporting ring (233). The pressing ring (231) is distributed on the outer periphery of the supporting ring (233) and abuts against the top surface of the temperature detection block (222).

3. The thermal conductivity detection device for a highly elastic thermal conductive silicone sheet according to claim 2, characterized in that, The pressing ring (231), the warping piece (232) and the supporting ring (233) are of an integrally formed structure, and a plurality of warping pieces (232) are evenly distributed in the circumferential direction.

4. A thermal conductivity detection device for a highly elastic heat-conducting silica gel sheet according to claim 1, characterized in that, The lower pressing disk (220) is a member made of a material with low thermal conductivity, and the patches on the surface of the lower pressing disk (220) are evenly spaced, and each patch is connected to each temperature detection block (222) one by one.

5. A thermal conductivity detection device for a highly elastic heat-conducting silicone sheet according to claim 1, characterized in that, A plurality of guide blocks (221) are fixedly installed on the outer periphery of the lower pressing disk (220). A guiding groove for the guide blocks (221) to slide is provided on the surface of the driving disk (210), and the guiding groove is used to guide the guide blocks (221) to slide in the direction perpendicular to the surface of the bearing ring seat (320).

6. The thermal conductivity detection device for a highly elastic heat-conducting silica gel sheet according to claim 1, characterized in that, The number of the first driving rods (130) is several, which is used to realize the horizontal lifting drive of the detection pressing group (200) under synchronous control. The second driving rod (140) is used to control the elastic deflection of the warping piece (232) through telescopic movement.

7. The thermal conductivity detection device for a highly elastic heat-conducting silica gel sheet according to claim 1, wherein, The top surface temperature detection blocks (222) of the lower pressing plate (220) are convex blocks, and the top surfaces of the respective temperature detection blocks (222) are located on the same horizontal plane for synchronous abutment with the bottom surface of the pressing ring (231).

8. A thermal conductivity detection device for a highly elastic heat-conducting silicone sheet according to claim 1, characterized in that, A power control module is provided inside the heating box (310) for controlling the heating power of the electric heating plate (321), and a temperature detection module is provided on the surface of the electric heating plate (321) for real-time sensing of the surface temperatures of the bearing ring seat (320) and the electric heating plate (321).

9. The thermal conductivity detection device for a highly elastic heat-conducting silicone sheet according to claim 1, characterized in that, The control panel (120) is used to adjust the lifting speed of the first driving rod (130) and the telescopic amplitude of the second driving rod (140). The control panel (120) is internally provided with a data analysis module, and the data analysis module is used to receive and process the signal data from the electric heating plate (321) and the temperature detection blocks (222).

10. The thermal conductivity detection device for a highly elastic heat-conducting silica gel sheet according to claim 1, characterized in that, A heat equalizing ring is provided inside the bearing ring seat (320).

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