Heat-conducting silicone grease composite molding device and molding method thereof
By integrating the composite molding device of primary stirring, drum grinding and vacuum stirring mechanisms, the problems of complex structure and low efficiency of the thermal grease molding device are solved, uniform stirring of raw materials, uniform heating and bubble removal are achieved, and the quality and thermal conductivity efficiency of the thermal grease are improved.
Patent Information
- Application Number
- CN202510837953.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-23
- Publication Date
- 2025-09-05
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing thermal grease molding device has a complex structure, low processing efficiency, uneven mixing of raw materials, easy agglomeration, and poor bubble removal effect, resulting in reduced thermal conductivity efficiency.
A composite molding device including a primary stirring mechanism, a drum grinding mechanism and a vacuum stirring mechanism was designed. The raw materials were gathered by tilting the stirring blades, uniformly heated and ground, and the bubbles were removed by vacuum stirring, thus realizing the integrated processing of multiple processes.
It improves processing efficiency, ensures uniform mixing and heating of raw materials, removes lumps and bubbles, improves the quality and density of thermal grease, and enhances thermal conductivity.
Smart Images
Figure CN120586733A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of thermal grease, in particular to a thermal grease composite molding device and a molding method thereof. Background Art
[0002] Thermal grease, commonly known as thermal paste, is a thermally conductive organic silicone grease-like compound made from silicone oil as the primary raw material, mixed with a thickener and other fillers in a specific proportion and thoroughly stirred. Thermal grease fills the microscopic air gaps between heating components (such as CPUs and GPUs) and heat sinks, replacing the low-thermal-conductivity air. The high-thermal-conductivity fillers (such as metal oxides and ceramic particles) contained within it form a continuous thermal network, significantly improving interfacial heat transfer efficiency. The processing and molding of thermal grease requires multiple steps and the use of various related processing facilities.
[0003] The existing thermal grease molding device has a relatively complex structure and an unreasonable design. The thermal grease raw materials require at least two mixing processes and one grinding process. The facilities corresponding to these processes are usually isolated. After completing one process, workers need to put the thermal grease semi-finished products into buckets and then move them to the facilities corresponding to the next process for processing, resulting in low overall processing efficiency. In addition, when the existing thermal grease molding device stirs the raw materials, the various raw materials are dispersed in the mixing tank and cannot be aggregated. The raw materials will diverge or be distributed chaotically in the mixing tank, making the stirring efficiency low. The thermal grease also needs to be heated during the processing process. The current heating structure usually releases a large amount of heat to some of the thermal grease semi-finished products in a short period of time. As a result, some of the thermal grease semi-finished products are heated too much, while other parts are not heated. As a result, some of the thermal grease clumps, which is not conducive to improving quality. It also cannot effectively remove bubbles in the thermal grease, resulting in low density, gaps in actual use, and reduced thermal conductivity. To this end, the inventors have improved the structure of the thermal grease molding device. Summary of the Invention
[0004] The object of the present invention is to provide a thermal grease composite molding device and a molding method thereof, wherein the device has a simple structure and a reasonable design, and multiple processes are compounded to reduce the number of processes and effectively improve the overall processing efficiency. During the stirring process, the raw materials are gathered toward the center position, which is conducive to making the raw material stirring more efficient, ensuring that the thermal grease semi-finished product is heated more evenly, and the final finished product particles are finer, effectively removing lumps in the thermal grease and improving the quality. The bubbles in the thermal grease semi-finished product are effectively removed through vacuum stirring, thereby improving the density and solving the problems raised by the above technical background.
[0005] To achieve the above object, the present invention provides the following technical solution: a thermal conductive silicone grease composite molding device, the molding device comprising a bracket and a primary stirring mechanism, a roller grinding mechanism and a vacuum stirring mechanism fixed to the bracket from top to bottom; The primary stirring mechanism includes a primary tank, which is a cavity structure with an opening at the top and a hollow interior, and primary stirring motors are fixed at both ends of the primary tank. Stirring components are connected to the two primary stirring motors, and the two groups of stirring components are symmetrically arranged on both sides of the primary tank cavity. The stirring components include an inner support shaft and multiple groups of blades fixed to the inner support shaft. The multiple groups of blades are distributed on the inner support shaft at equal intervals. In this embodiment, the number of blades in each group is three, and the output end of the primary stirring motor is fixedly connected to the inner support shaft. The roller grinding mechanism includes a grinding tank, on which a main grinding motor and an auxiliary motor are fixed, wherein the output end of the auxiliary motor is connected to an auxiliary cylinder, and the output end of the main grinding motor is connected to a sprocket group, which is installed at an end of the grinding tank away from the main grinding motor, and the two ends of the sprocket group are respectively connected to the main roller and the auxiliary roller, and a heating component is provided on the main roller, and the heating component includes a fixing rod, both ends of the fixing rod are fixed to the grinding tank, and an end of the fixing rod close to the main roller is provided with a mounting groove, an electric heating pipe is fixed in the mounting groove, and a heat dispersion plate is provided at the end of the electric heating pipe close to the main roller; The vacuum stirring mechanism includes a vacuum tank and a vacuum stirring motor fixed on the upper end surface of the vacuum tank. The output end of the vacuum stirring motor is connected to a stirring rod. A plurality of blade rod assemblies are arranged on the stirring rod, wherein the blade rod assembly includes a sleeve and a curved blade rod fixed on the sleeve. The sleeve is fixed on the stirring rod. The curved blade rod is rod-shaped, and the end of the curved blade rod away from the sleeve is bent upward. Since the height values of the curved blade rod surface are different at different points, the thermal conductive silicone grease semi-finished product at different depths in the vacuum tank cavity can be stirred, which is conducive to the expulsion of bubbles in a short time. The primary stirring motor, the main grinding motor, the auxiliary motor and the vacuum stirring motor are all provided with a reducer. The structure of the reducer is the existing technology and will not be repeated here.
[0006] Preferably, a support is provided between the two inner shafts, and both inner shafts are rotatably connected to the support, and the support is fixed to the bottom of the primary tank cavity, so that the support structure remains stable, and the support can support the two inner shafts.
[0007] Preferably, the primary stirring motor and the inner support shaft are both tilted, and the inclination angle of the inner support shaft is between 2° and 5°. By setting the two inner support shafts to be tilted, the blades on the two sets of stirring components can drive the raw materials toward the center of the primary tank cavity while stirring the raw materials, thereby causing the raw materials to continuously gather toward the center of the cavity of the primary tank, which is conducive to stirring the raw materials more fully and quickly.
[0008] Preferably, two discharge pipes are fixed at the bottom of the primary tank, and a cover plate is connected to the cavity opening of the primary tank through a rotating shaft. The cover plate can be flipped along the rotating shaft to open or close the opening of the primary tank, and valves are provided on both discharge pipes.
[0009] Preferably, the main grinding motor, auxiliary motor, sprocket group, main roller, auxiliary roller, auxiliary roller and heating component are each provided in two groups, the two groups of main rollers are symmetrical to the two ends of the grinding groove, and the height value of the main roller is greater than the height value of the auxiliary roller, the auxiliary roller and the auxiliary roller are set at the same height, and the two groups of heating components respectively heat the thermal grease semi-finished products poured on the two groups of main rollers.
[0010] Preferably, the cross-sectional area of the heat dispersion plate away from one end of the electric heating tube increases, and the heat dispersion plate has a heat dissipation arc surface, and the heat dissipation arc surface is close to the main roller. When the main roller rotates and grinds the thermal grease semi-finished product, the thermal grease semi-finished product on it rotates accordingly and contacts the heat dissipation arc surface, and absorbs appropriate heat from the heat dissipation arc surface, and directly contacts the main roller through the heat dissipation arc surface, so that the heat is dispersed through the heat dispersion plate, and the heat dissipation area is increased through the heat dissipation arc surface, so that the heat is evenly distributed on the thermal grease semi-finished product in various places. In this way, the thermal grease semi-finished product is heated, and the thermal grease semi-finished product is prevented from absorbing too much heat and deteriorating.
[0011] Preferably, a discharge pipe communicating with the cavity of the grinding tank is fixedly connected to the bottom of the grinding tank, and one end of the discharge pipe away from the grinding tank is fixedly connected to the vacuum tank.
[0012] Preferably, the stirring rod and the blade rod assembly are both arranged in the cavity of the vacuum tank, and multiple groups of blade rod assemblies are distributed on the stirring rod at equal intervals.
[0013] Preferably, multiple needle rods are fixed at both ends of each curved leaf rod, and the orientations of two adjacent needle rods are different. Therefore, by setting up several needle rods that are staggered and oriented in different directions, the trajectories of the curved leaf rods and needle rods during rotation are more diversified, thereby producing a more powerful stirring effect, quickly removing bubbles in the thermal grease semi-finished product, and a discharge barrel is fixed at the bottom of the vacuum tank.
[0014] A molding method for a thermally conductive silicone grease composite molding device comprises the following steps: ① Add all the raw materials into the cavity of the primary tank, drive the two primary stirring motors to drive the two inner support shafts to rotate, so that the blades on the two inner support shafts rotate and perform primary stirring on all the raw materials, then open the valve and pour the thermal grease semi-finished product onto the two main rollers through the two discharge pipes; ② Drive the two main grinding motors and two auxiliary motors to operate, drive the two sets of sprocket groups to operate, and make the two sets of main rollers, two sets of auxiliary rollers and two sets of auxiliary rollers rotate. At the same time, the two electric heating tubes are energized to release heat to the two heat dissipation plates. The two sets of main rollers drive the silicone grease on them to rotate. The semi-finished thermal silicone grease is continuously ground between the two auxiliary rollers and the two auxiliary rollers. While grinding, it absorbs heat from the two heat dissipation plates to achieve appropriate fluidity and viscosity. ③ Open the valve on the discharge pipe to allow the semi-finished thermal grease to enter the vacuum tank cavity. The operation of the vacuum stirring motor drives multiple sets of blade rod assemblies to rotate. Multiple curved blade rods and the needle rods on them further stir the semi-finished thermal grease at different positions and depths in the vacuum tank cavity, remove the bubbles therein, increase the density, and finally obtain the finished thermal grease. In actual use, it can better fill the gap between the heat dissipation structure and the electronic products, avoiding the problem of reduced thermal conductivity efficiency due to the generation of bubbles.
[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a thermal grease composite molding device and a molding method thereof, wherein the molding device includes a bracket and a primary stirring mechanism, a roller grinding mechanism, and a vacuum stirring mechanism fixed on the bracket from top to bottom. The overall structure is simple and the design is reasonable. By combining multiple steps of thermal grease processing, all facilities are installed on the bracket. The entire processing process of the thermal grease can be completed by the primary stirring mechanism, the roller grinding mechanism, and the vacuum stirring mechanism on the bracket. Therefore, the trouble of transferring the raw materials and semi-finished products of the thermal grease back and forth between different facilities is eliminated, the process is reduced, the overall processing efficiency is effectively improved, and the device is suitable for popularization and use.
[0016] 2. The primary stirring mechanism in the present invention includes a primary tank, and primary stirring motors are fixed at both ends of the primary tank. A stirring assembly is connected to the two primary stirring motors, and the two groups of stirring assemblies are symmetrically arranged on both sides of the primary tank cavity, wherein the stirring assembly includes an inner support shaft and multiple groups of blades fixed on the inner support shaft. The output end of the primary stirring motor is fixedly connected to the inner support shaft, and the two inclined inner support shafts are driven to rotate by the two primary stirring motors respectively, so that the two groups of blades stir the raw materials respectively, and while stirring, all the raw materials are moved toward the center position of the primary tank cavity, so that the raw materials are gathered toward the center position, which is conducive to making the stirring of the raw materials more efficient and avoiding the problem of insufficient stirring due to divergence or chaotic distribution of the raw materials.
[0017] 3. The roller grinding mechanism of the present invention includes a grinding tank, on which a main grinding motor and an auxiliary motor are fixed, wherein the output end of the auxiliary motor is connected to an auxiliary cylinder, and the output end of the main grinding motor is connected to a sprocket group, which is installed at the end of the grinding tank away from the main grinding motor, and the two ends of the sprocket group are respectively connected to the main roller and the auxiliary roller, and a heating component is provided on the main roller, and the heating component includes a fixing rod, and an installation groove is provided at the end of the fixing rod close to the main roller, and an electric heating pipe is fixed in the installation groove, wherein a heat dissipation plate is provided at the end of the electric heating pipe close to the main roller, By setting a heating component on the drum grinding mechanism, the thermal grease semi-finished product poured on the main drum is heated in real time during grinding. Since the heat is evenly distributed on the surface of the auxiliary drum, and as the main drum rotates, all the thermal grease semi-finished products poured on it absorb a certain amount of heat, it is ensured that the thermal grease semi-finished products can absorb heat without being overheated. Therefore, the thermal grease semi-finished products are heated more evenly, and the final finished product particles are finer. At the same time, the lumps in the thermal grease are effectively removed by heating, thereby improving the quality of the thermal grease.
[0018] 4. The vacuum stirring mechanism of the present invention includes a vacuum tank and a vacuum stirring motor fixed on the upper end surface of the vacuum tank. The output end of the vacuum stirring motor is connected to a stirring rod. A plurality of blade rod assemblies are arranged on the stirring rod, wherein the blade rod assembly includes a sleeve and a curved blade rod fixed on the sleeve. The curved blade rod is rod-shaped, and the end of the curved blade rod away from the sleeve is bent upward. Since the height values of the curved blade rod surface are different at different points, the thermal grease semi-finished product at different depths in the vacuum tank cavity can be stirred, which is conducive to the expulsion of bubbles in a short time. The bubbles in the thermal grease semi-finished product can be effectively removed by vacuum stirring, and the density can be improved. When the user actually uses it, the gap between the heat dissipation structure and the electronic product can be better filled, thereby avoiding the problem of reduced thermal conductivity efficiency due to the generation of bubbles. The practicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is the overall structural diagram of the present invention; Figure 2 Schematic diagram of the primary stirring mechanism of the present invention; Figure 3 For the present invention Figure 1 Cross-sectional view of the primary stirring mechanism at AA; Figure 4 This is one of the schematic diagrams of the drum grinding mechanism of the present invention; Figure 5 This is the second schematic diagram of the drum grinding mechanism of the present invention; Figure 6 For the present invention Figure 1 Cross-sectional view of the middle roller grinding mechanism at AA; Figure 7For the present invention Figure 6 Enlarged view of middle B; Figure 8 Schematic diagram of the vacuum stirring mechanism of the present invention; Figure 9 For the present invention Figure 1 Cross-sectional view of the vacuum stirring mechanism at AA.
[0020] The reference numerals and names in the figure are as follows: 1. bracket; 2. primary stirring mechanism; 21. primary tank; 22. primary stirring motor; 23. stirring assembly; 231. inner support shaft; 232. blade; 233. support; 24. discharge pipe; 25. cover plate; 3. roller grinding mechanism; 31. grinding groove; 32. main grinding motor; 33. auxiliary motor; 34. sprocket group; 35. main roller; 36. auxiliary roller; 37. auxiliary cylinder; 38. heating assembly; 381. fixing rod; 382. mounting groove; 383. electric heating pipe; 384. heat dispersion plate; 3841. heat dissipation arc surface; 39. discharge pipe; 4. vacuum stirring mechanism; 41. vacuum tank; 42. vacuum stirring motor; 43. stirring rod; 44. blade rod assembly; 441. sleeve; 442. bent blade rod; 443. needle rod; 45. discharge barrel. DETAILED DESCRIPTION
[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0022] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.
[0023] In the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.
[0024] See also Figure 1 An embodiment of the present invention provides: a thermal grease composite molding device, which includes a bracket 1 and a primary stirring mechanism 2, a roller grinding mechanism 3 and a vacuum stirring mechanism 4 fixed on the bracket 1 from top to bottom.
[0025] See also Figure 2 , wherein the primary stirring mechanism 2 includes a primary tank 21, which is a cavity structure with an opening at the top and a hollow interior, and primary stirring motors 22 are fixed at both ends of the primary tank 21, and stirring components 23 are connected to the two primary stirring motors 22. The two groups of stirring components 23 are symmetrically arranged on both sides of the cavity of the primary tank 21, wherein the stirring component 23 includes an inner support shaft 231 and multiple groups of blades 232 fixed on the inner support shaft 231, and the multiple groups of blades 232 are distributed on the inner support shaft 231 at equal intervals. In this embodiment, the number of blades 232 in each group is three, and the output end of the primary stirring motor 22 is fixedly connected to the inner support shaft 231. Two discharge pipes 24 are fixed at the bottom of the primary tank 21, and a cover plate 25 is connected to the cavity opening of the primary tank 21 through a rotating shaft. The cover plate 25 can be flipped along with the rotating shaft to open or close the opening of the primary tank 21.
[0026] See also Figure 3 The primary stirring motor 22 and the inner support shaft 231 are both tilted, and the tilt angle of the inner support shaft 231 is between 2° and 5°. By setting the two inner support shafts 231 to be tilted, the blades 232 on the two groups of stirring components 23 can drive the raw materials to move toward the center of the cavity of the primary tank 21 while stirring the raw materials, thereby causing the raw materials to continuously gather toward the center of the cavity of the primary tank 21, which is conducive to making the raw materials stirred more fully and quickly. A support 233 is provided between the two inner support shafts 231, and the two inner support shafts 231 are rotatably connected to the support 233. The support 233 is fixed to the bottom of the cavity of the primary tank 21, so the structure of the support 233 remains stable, and the support 233 can support the two inner support shafts 231.
[0027] See also Figure 4The roller grinding mechanism 3 includes a grinding groove 31 , on which two main grinding motors 32 and two auxiliary motors 33 are fixed. The height of the two main grinding motors 32 is greater than the height of the two auxiliary motors 33 .
[0028] See also Figure 5 The output end of the auxiliary motor 33 is connected to an auxiliary cylinder 37, and the output end of the main grinding motor 32 is connected to a sprocket group 34. The sprocket group 34 consists of two sprockets and a chain connecting the two sprockets. The sprockets are installed on the outside of the grinding groove 31. The sprocket group 34 is installed at the end of the grinding groove 31 away from the main grinding motor 32, and the two ends of the sprocket group 34 are respectively connected to the main roller 35 and the auxiliary roller 36. A heating component 38 is provided on the main roller 35. There are two groups of sprocket groups 34, main rollers 35, auxiliary rollers 36, auxiliary cylinders 37 and heating components 38. The two groups of main rollers 35 are symmetrical to the two ends of the grinding groove 31, and the height of the main roller 35 is greater than the height of the auxiliary roller 36. The auxiliary roller 36 and the auxiliary cylinder 37 are set at the same height. The two groups of heating components 38 heat the thermal grease semi-finished products poured on the two groups of main rollers 35 respectively.
[0029] See also Figure 6 A discharge pipe 39 communicating with the cavity of the grinding tank 31 is fixedly connected to the bottom of the grinding tank 31.
[0030] See also Figure 7 The heating assembly 38 includes a fixing rod 381, both ends of the fixing rod 381 are fixed to the grinding tank 31, and the fixing rod 381 is provided with a mounting groove 382 at one end close to the main roller 35, and an electric heating pipe 383 is fixed in the mounting groove 382. The electric heating pipe 383 is powered by external power facilities. The structure of the power supply facility is the existing technology and is not described here. A heat dissipation plate 384 is provided at one end of the electric heating pipe 383 close to the main roller 35. The cross-sectional area of the heat dissipation plate 384 is increased at the end away from the electric heating pipe 383, and the heat dissipation plate 384 has a heat dissipation arc surface 3841. The heat dissipation arc surface 3841 Close to the main roller 35, when the main roller 35 rotates and grinds the thermal grease semi-finished product, the thermal grease semi-finished product on it rotates accordingly and contacts the heat dissipation arc surface 3841, and absorbs appropriate heat from the heat dissipation arc surface 3841. It directly contacts the main roller 35 through the heat dissipation arc surface 3841, so that the heat is dispersed through the heat dispersion plate 384, and the heat dissipation area is increased through the heat dissipation arc surface 3841, so that the heat is evenly distributed on the thermal grease semi-finished product in various places. In this way, the thermal grease semi-finished product is heated and the thermal grease semi-finished product is prevented from absorbing too much heat and deteriorating. In this embodiment, the heat dispersion plate 384 is made of copper.
[0031] See also Figure 8The vacuum stirring mechanism 4 includes a vacuum tank 41 and a vacuum stirring motor 42 fixed to the upper end surface of the vacuum tank 41. The end of the discharge pipe 39 away from the grinding tank 31 is fixedly connected to the vacuum tank 41. The primary stirring motor 22, the main grinding motor 32, the auxiliary motor 33 and the vacuum stirring motor 42 are all provided with a reducer. The structure of the reducer is the existing technology and will not be repeated here.
[0032] See also Figure 9 The output end of the vacuum stirring motor 42 is connected to a stirring rod 43, and a plurality of blade rod assemblies 44 are arranged on the stirring rod 43. The stirring rod 43 and the blade rod assembly 44 are both arranged in the cavity of the vacuum tank 41. The plurality of blade rod assemblies 44 are evenly spaced and distributed on the stirring rod 43. The blade rod assembly 44 includes a sleeve 441 and a curved blade rod 442 fixed on the sleeve 441. The sleeve 441 is fixed on the stirring rod 43. The curved blade rod 442 is rod-shaped, and the end of the curved blade rod 442 away from the sleeve 441 is bent upward. Since the height values of the curved blade rod 442 are different at different places on the surface, the thermal grease at different depths in the cavity of the vacuum tank 41 can be adjusted. The semi-finished product has a stirring effect, which is conducive to the expulsion of bubbles in a short time. A plurality of needle rods 443 are fixed at both ends of each curved leaf rod 442, and the orientations of two adjacent needle rods 443 are different. Therefore, by setting up a number of staggered needle rods 443 with different orientations, the trajectories of the curved leaf rods 442 and the needle rods 443 during rotation are more diversified, thereby producing a stronger stirring effect, and quickly removing bubbles in the thermal grease semi-finished product. A discharge barrel 45 is fixed at the bottom of the vacuum tank 41, and valves are installed on the two discharge pipes 24, the discharge pipe 39 and the discharge barrel 45. The structure of the valve is existing technology and will not be repeated here.
[0033] A molding method for a thermally conductive silicone grease composite molding device comprises the following steps: ① Add all the raw materials into the cavity of the primary tank 21, drive the two primary stirring motors 22 to drive the two inner support shafts 231 to rotate, so that the blades 232 on the two inner support shafts 231 rotate and perform primary stirring on all the raw materials. After the primary stirring is completed, open the valve and pour the semi-finished thermal grease onto the two main rollers 35 through the two discharge pipes 24; ② The two main grinding motors 32 and the two auxiliary motors 33 are driven to operate, which drives the two sprocket sets 34 to operate, causing the two sets of main rollers 35, the two sets of auxiliary rollers 36 and the two sets of auxiliary rollers 37 to rotate. At the same time, the two electric heating tubes 383 are energized to release heat to the two heat dissipation plates 384. The two sets of main rollers 35 drive the silicone grease on them to rotate. The semi-finished thermal silicone grease is continuously ground between the two auxiliary rollers 36 and the two auxiliary rollers 37. While grinding, it absorbs heat from the two heat dissipation plates 384 to achieve appropriate fluidity and viscosity. ③ Open the valve on the discharge pipe 39 to allow the semi-finished thermal grease to enter the cavity of the vacuum tank 41. The operation of the vacuum stirring motor 42 drives the multiple groups of blade rod assemblies 44 to rotate. The multiple curved blade rods 442 and the needle rods 443 thereon further stir the semi-finished thermal grease at different positions and depths in the cavity of the vacuum tank 41, and remove the bubbles therein to increase the density, and finally obtain the finished thermal grease. In actual use, it can better fill the gap between the heat dissipation structure and the electronic products, avoiding the problem of reduced thermal conductivity efficiency due to the generation of bubbles.
[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.
Claims
1. A thermal conductive silicone grease composite molding device, characterized by: It comprises a bracket (1) and a primary stirring mechanism (2), a roller grinding mechanism (3) and a vacuum stirring mechanism (4) fixed on the bracket (1) in order from top to bottom; The primary stirring mechanism (2) includes a primary tank (21), the primary tank (21) is a cavity structure with an opening at the top and a hollow interior, and primary stirring motors (22) are fixed at both ends of the primary tank (21), and stirring components (23) are connected to the two primary stirring motors (22), and two groups of stirring components (23) are symmetrically arranged on both sides of the cavity of the primary tank (21), wherein the stirring components (23) include an inner support shaft (231) and a plurality of groups of blades (232) fixed on the inner support shaft (231), and the output end of the primary stirring motor (22) is fixedly connected to the inner support shaft (231); The roller grinding mechanism (3) comprises a grinding groove (31), a main grinding motor (32) and an auxiliary motor (33) are fixed on the grinding groove (31), wherein the output end of the auxiliary motor (33) is connected to an auxiliary cylinder (37), and the output end of the main grinding motor (32) is connected to a sprocket group (34), the sprocket group (34) is installed at one end of the grinding groove (31) away from the main grinding motor (32), and the two ends of the sprocket group (34) are respectively connected to the main roller (35) and the auxiliary roller (36), a heating assembly (38) is provided on the main roller (35), and the heating assembly (38) includes a fixing rod (381), both ends of the fixing rod (381) are fixed to the grinding groove (31), and an installation groove (382) is provided on the end of the fixing rod (381) close to the main roller (35), an electric heating pipe (383) is fixed in the installation groove (382), and a heat dissipation plate (384) is provided on the end of the electric heating pipe (383) close to the main roller (35); The vacuum stirring mechanism (4) comprises a vacuum tank (41) and a vacuum stirring motor (42) fixed to the upper end surface of the vacuum tank (41); the output end of the vacuum stirring motor (42) is connected to a stirring rod (43); the stirring rod (43) is provided with a plurality of blade rod assemblies (44); the blade rod assemblies (44) comprise a sleeve (441) and a curved blade rod (442) fixed to the sleeve (441); the sleeve (441) is fixed to the stirring rod (43); the curved blade rod (442) is rod-shaped, and one end of the curved blade rod (442) away from the sleeve (441) is bent upward.
2. A thermal conductive silicone grease composite molding device according to claim 1, characterized in that: A support (233) is provided between the two inner support shafts (231), and both inner support shafts (231) are rotatably connected to the support (233), and the support (233) is fixed to the bottom of the cavity of the primary tank (21).
3. The thermal conductive silicone grease composite molding device according to claim 1, characterized in that: The primary stirring motor (22) and the inner support shaft (231) are both arranged to be tilted, and the tilt angle of the inner support shaft (231) is between 2° and 5°.
4. The thermal conductive silicone grease composite molding device according to claim 1, characterized in that: Two discharge pipes (24) are fixed to the bottom of the primary tank (21), and a cover plate (25) is connected to the cavity opening of the primary tank (21) via a rotating shaft.
5. The thermal conductive silicone grease composite molding device according to claim 1, characterized in that: The main grinding motor (32), the auxiliary motor (33), the sprocket assembly (34), the main roller (35), the auxiliary roller (36), the auxiliary roller (37) and the heating assembly (38) are each provided in two groups, the two groups of the main rollers (35) are symmetrical to the two ends of the grinding tank (31), and the height value of the main roller (35) is greater than the height value of the auxiliary roller (36).
6. The thermal conductive silicone grease composite molding device according to claim 1, characterized in that: The cross-sectional area of the heat dispersion plate (384) at one end away from the electric heating tube (383) increases, and the heat dispersion plate (384) has a heat dissipation arc surface (3841).
7. The thermal conductive silicone grease composite molding device according to claim 1, characterized in that: A discharge pipe (39) communicating with the cavity of the grinding tank (31) is fixedly connected to the bottom of the grinding tank (31), and one end of the discharge pipe (39) away from the grinding tank (31) is fixedly connected to the vacuum tank (41).
8. The thermal conductive silicone grease composite molding device according to claim 1, characterized in that: The stirring rod (43) and the blade rod assembly (44) are both arranged in the cavity of the vacuum tank (41), and a plurality of groups of the blade rod assemblies (44) are distributed on the stirring rod (43) at equal intervals.
9. The thermal conductive silicone grease composite molding device according to claim 1, characterized in that: A plurality of needle rods (443) are fixed to both ends of each curved leaf rod (442), and the orientations of two adjacent needle rods (443) are different.
10. A molding method for a thermally conductive silicone grease composite molding device, characterized in that: The following steps are involved: ① All raw materials are added into the cavity of the primary tank (21), and two primary stirring motors (22) are driven to drive two inner support shafts (231) to rotate, and the blades (232) on the two inner support shafts (231) rotate and perform primary stirring on all raw materials. After the primary stirring is completed, the valve is opened and the semi-finished thermal grease is poured onto the two main rollers (35) through the two discharge pipes (24); ② driving two main grinding motors (32) and two auxiliary motors (33) to operate, driving two sets of sprocket groups (34) to operate, causing two sets of main rollers (35), two sets of auxiliary rollers (36) and two sets of auxiliary cylinders (37) to rotate, and at the same time, energizing two electric heating tubes (383) to release heat on two heat dissipation plates (384). The two sets of main rollers (35) drive the silicone grease thereon to rotate, and the semi-finished thermal conductive silicone grease is continuously ground between the surfaces of the two auxiliary rollers (36) and the two auxiliary cylinders (37), while absorbing heat from the two heat dissipation plates (384) to achieve appropriate fluidity and viscosity; ③ Open the valve on the discharge pipe (39) to allow the semi-finished thermal grease to enter the cavity of the vacuum tank (41). The vacuum stirring motor (42) drives the multiple groups of blade rod assemblies (44) to rotate. The multiple curved blade rods (442) and the needle rods (443) thereon further stir the semi-finished thermal grease at different positions and depths in the cavity of the vacuum tank (41), remove bubbles therein, increase the density, and finally obtain the finished thermal grease.