A rapid curing heat conductive silicone sheet thermoforming machine

Abstract

The utility model belongs to the technical field of heat conduction silica gel processing equipment, disclose a kind of quick solidification's heat conduction silica gel sheet thermoforming machine, including rack and respectively rotating connection in the winding roller and unwinding roller of rack both sides, the unwinding roller side is provided with the preheating component for the preheating of raw material to be hot-pressed, the downstream of preheating component is provided with the hot-pressing component for the hot-pressing processing of raw material, the downstream of hot-pressing component is provided with the cooling solidification component for the quick cooling solidification of raw material after hot-pressing processing, the utility model is set to the setting of multiple groups of fixed cooling roller and movable cooling roller that can be inhaled cooling liquid, improve the cooling solidification effect to silica gel sheet, solve the problem of poor cooling solidification effect of traditional equipment, improve the solidification uniformity of silica gel sheet and the quality of finished product heat conduction silica gel sheet.

Description

Technical Field

[0001] This utility model relates to the technical field of thermally conductive silicone processing equipment, and more specifically, to a thermoforming machine for rapidly curing thermally conductive silicone sheets. Background Technology

[0002] Thermally conductive silicone pads are a high-performance thermal interface material widely used in electronic devices, LED lighting, automotive electronics, and other fields. They are mainly used to fill the gap between heat-generating devices and heat dissipation devices to improve heat transfer efficiency and ensure the stability of device operation. In the production process, thermoforming machines are one of the core pieces of equipment.

[0003] Traditional thermal conductive silicone sheet thermoforming machines mostly use air cooling or static water cooling for their cooling and curing components. This results in low cooling efficiency and uneven temperature distribution, which prevents the silicone sheet from curing quickly after hot pressing. This leads to incomplete curing in some areas, resulting in uneven thermal conductivity in the finished silicone sheet and affecting the quality of the finished product.

[0004] In view of this, we propose a rapid curing thermally conductive silicone sheet thermoforming machine. Utility Model Content

[0005] 1. Technical problems to be solved The purpose of this invention is to provide a rapid curing thermal conductive silicone sheet thermoforming machine to solve the problem mentioned in the background art where the curing effect of traditional thermal conductive silicone sheet thermoforming machines is poor, thus affecting the quality of the finished product.

[0006] 2. Technical Solution A rapid-curing thermally conductive silicone sheet thermoforming machine includes a frame and a take-up roller and an unwind roller rotatably connected to both sides of the frame. A preheating component for preheating the raw material to be hot-pressed is provided on one side of the unwind roller. A hot-pressing component for hot-pressing the raw material is provided downstream of the preheating component. A cooling and curing component for rapidly cooling and curing the hot-pressed raw material is provided downstream of the hot-pressing component.

[0007] Preferably, the preheating assembly includes two first mounting brackets fixedly connected to the frame, and two heating rollers are rotatably connected to the two first mounting brackets. The two heating rollers are used to preheat both sides of the silicone sheet.

[0008] Preferably, the hot pressing assembly includes a second mounting bracket fixedly connected to the frame and a first electric push rod fixedly connected to the second mounting bracket. A first hot pressing plate is fixedly connected to the second mounting bracket, and a second hot pressing plate is fixedly connected to the extended end of the first electric push rod. The first hot pressing plate is used to cooperate with the second hot pressing plate to perform hot pressing processing on the silicone sheet.

[0009] Preferably, the cooling and curing assembly includes a third mounting bracket and a plurality of fourth mounting brackets fixedly connected to the frame. A second electric push rod is fixedly connected to the third mounting bracket. A plurality of fixed cooling rollers and movable cooling rollers with adjustable spacing are provided on the plurality of fourth mounting brackets. The movable cooling rollers can adjust the spacing between themselves and the fixed cooling rollers to accommodate silicone sheets of various thicknesses.

[0010] Preferably, two sets of the fourth mounting brackets are provided, with each set of four mounting brackets having a fixed cooling roller rotatably connected to it, and two movable blocks slidably connected to each set of four mounting brackets. The two movable blocks are rotatably connected to both ends of the movable cooling roller. Both ends of the fixed cooling roller and the movable cooling roller are fixedly connected to a ring-shaped rotating block. The movable blocks and the fourth mounting brackets are provided with movable grooves that match the size of the movable blocks. Both sides of the movable blocks are fixedly connected to sliders with a T-shaped cross-section. The fourth mounting brackets are provided with sliding grooves that match the size of the sliders.

[0011] Preferably, a movable frame is fixedly connected to the plurality of movable blocks, and the top of the movable frame is fixedly connected to the extended end of the second electric push rod.

[0012] Preferably, both ends of the fixed cooling roller and the moving cooling roller are provided with inlet pipes and outlet pipes, respectively. The inlet pipes are used to introduce coolant into the fixed cooling roller and the moving cooling roller to improve the cooling and curing effect of the silicone sheet.

[0013] 3. Beneficial effects Compared with existing technologies, the advantages of this utility model are: 1. This utility model improves the cooling and curing effect of silicone sheets by setting up multiple sets of fixed and moving cooling rollers that can be circulated with coolant, solving the problem of poor cooling and curing effect of traditional equipment, and improving the curing uniformity of silicone sheets and the quality of finished thermally conductive silicone sheets.

[0014] 2. By setting up sliders at both ends of the moving cooling roller and a second electric push rod, this utility model achieves the effect of adjustable spacing between the moving cooling roller and the fixed cooling roller, making the device adaptable to silicone sheets of various thicknesses and improving the applicability of the equipment.

[0015] 3. This utility model achieves continuous processing of thermally conductive silicone sheets by using the rapid cooling function of the cooling and curing component and the setting of the preheating component and hot pressing component, thereby improving processing efficiency. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2This is a schematic diagram of the internal structure of the hot-pressing component of this utility model; Figure 3 This is a schematic diagram of the cooling and curing assembly of this utility model; Figure 4 This is an exploded view of the movable frame and the moving cooling roller of this utility model; Figure 5 This is a cross-sectional schematic diagram of the movable frame of this utility model.

[0017] The following are the labels in the diagram: 1. Frame; 11. Take-up roller; 12. Unwind roller; 2. Preheating assembly; 21. First mounting frame; 22. Heating roller; 3. Hot pressing assembly; 31. Second mounting frame; 32. First electric push rod; 33. First hot pressing plate; 34. Second hot pressing plate; 4. Cooling and curing assembly; 41. Third mounting frame; 42. Fourth mounting frame; 43. Second electric push rod; 44. Fixed cooling roller; 45. Moving cooling roller; 46. Water inlet pipe; 47. Water outlet pipe; 48. Movable block; 49. Slider; 410. Slide groove; 411. Rotating block; 412. Rotating groove; 413. Movable frame. Detailed Implementation

[0018] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] Please see Figure 1-5 This utility model provides a technical solution: A rapid-curing thermally conductive silicone sheet thermoforming machine includes a frame 1 and a take-up roller 11 and an unwind roller 12 rotatably connected to both sides of the frame 1. A preheating component 2 for preheating the raw material to be hot-pressed is provided on one side of the unwind roller 12. A hot-pressing component 3 for hot-pressing the raw material is provided downstream of the preheating component 2. A cooling and curing component 4 for rapidly cooling and curing the hot-pressed raw material is provided downstream of the hot-pressing component 3. In specific implementation, the uncured thermally conductive silicone sheet is released by the unwind roller 12 and wound up by the take-up roller 11. Through the preheating, hot-pressing and cooling and curing processes, the continuous processing of thermally conductive silicone sheets is realized, improving production efficiency.

[0022] Secondly, the preheating component 2 includes two first mounting brackets 21 fixedly connected to the frame 1. Two heating rollers 22 are rotatably connected to the two first mounting brackets 21. The two heating rollers 22 are used to preheat both sides of the silicone sheet. In specific implementation, the heating rollers 22 should be equipped with heating devices such as heating wires. The two heating rollers 22 can simultaneously preheat both sides of the raw material, which provides convenience for subsequent hot pressing processing.

[0023] Furthermore, the hot pressing assembly 3 includes a second mounting bracket 31 fixedly connected to the frame 1 and a first electric push rod 32 fixedly connected to the second mounting bracket 31. A first hot pressing plate 33 is fixedly connected to the second mounting bracket 31, and a second hot pressing plate 34 is fixedly connected to the extended end of the first electric push rod 32. The first hot pressing plate 33 is used to cooperate with the second hot pressing plate 34 to perform hot pressing processing on the silicone sheet. The first hot pressing plate 33 is used to support the thermally conductive silicone sheet, and the second hot pressing plate 34 is used to press down and cooperate with the first hot pressing plate 33 to perform hot pressing processing on the thermally conductive silicone sheet, so that the silicone sheet completes the pre-forming before cross-linking and curing under pressure and temperature.

[0024] Furthermore, the cooling and curing assembly 4 includes a third mounting bracket 41 and multiple fourth mounting brackets 42 fixedly connected to the frame 1. A second electric push rod 43 is fixedly connected to the third mounting bracket 41. Multiple fixed cooling rollers 44 and movable cooling rollers 45 with adjustable spacing are provided on the multiple fourth mounting brackets 42. The movable cooling rollers 45 can adjust the distance between themselves and the fixed cooling rollers 44 to adapt to silicone sheets of various thicknesses. The cooling assembly is used to cool and cure the silicone sheets after hot pressing. In specific processing, the distance between the movable cooling rollers 45 and the fixed cooling rollers 44 needs to be adjustable to ensure that the movable cooling rollers 45 and the fixed cooling rollers 44 have full contact with both sides of silicone sheets of different thicknesses.

[0025] Specifically, such as Figure 3As shown, there are two sets of fourth mounting brackets 42 arranged in pairs. Each set of fourth mounting brackets 42 has a fixed cooling roller 44 rotatably connected to it, and two movable blocks 48 slidably connected to each set of fourth mounting brackets 42. The two movable blocks 48 are rotatably connected to the two ends of the moving cooling roller 45, respectively. The two ends of the fixed cooling roller 44 and the moving cooling roller 45 are fixedly connected to the annular rotating blocks 411. The movable blocks 48 and the fourth mounting brackets 42 are provided with movable grooves that are adapted to the size of the movable blocks 48. The two sides of the movable blocks 48 are fixedly connected to sliders 49 with a T-shaped cross section. The fourth mounting brackets 42 are provided with sliding grooves 410 that are adapted to the size of the sliders 49. That is to say, each set of fourth mounting brackets 42 has a fixed cooling roller 44 rotatably connected to it and two movable blocks 48 slidably connected to it. The moving cooling roller 45 is rotatably connected between the two movable blocks 48. By adjusting the position of the movable blocks 48 in the sliding grooves 410, the distance between the moving cooling roller 45 and the fixed cooling roller 44 can be adjusted.

[0026] like Figure 5 As shown, the rotating groove 412 is configured as an annular groove with an L-shaped cross section, and the rotating block 411 is an annular block with an L-shaped cross section, so that the fixed cooling roller 44 can rotate along the fourth mounting frame 42, and the moving cooling roller 45 can rotate relative to the movable block 48.

[0027] In addition, a movable frame 413 is fixedly connected to the multiple movable blocks 48. The top of the movable frame 413 is fixedly connected to the extended end of the second electric push rod 43. This arrangement allows the second electric push rod 43 to synchronously adjust the height of the multiple movable blocks 48, which in turn synchronously adjusts the height of the multiple moving cooling rollers 45. This not only improves the convenience of adjusting the multiple moving cooling rollers 45, but also ensures the consistency of the height of the multiple moving cooling rollers 45, thus ensuring the cooling and curing effect.

[0028] The fixed cooling roller 44 and the moving cooling roller 45 are each provided with an inlet pipe 46 and an outlet pipe 47 at both ends. The inlet pipe 46 is used to introduce coolant into the fixed cooling roller 44 and the moving cooling roller 45 to improve the cooling and curing effect on the silicone sheet. In specific implementation, the fixed cooling roller 44 and the moving cooling roller 45 are provided with inlet pipe 46 and outlet pipe 47 interfaces at both ends. The inlet pipe 46 is connected to the internal cavity of the roller, and the outlet pipe 47 is also connected to the internal cavity of the roller to form a closed circulation channel. In use, the low temperature coolant can be pumped into the inlet pipe 46 through a pipeline by a chiller. The coolant flows along the inner cavity of the roller and absorbs the heat conducted by the roller surface. Then it flows out from the outlet pipe 47 and returns to the chiller for cooling and recycling. Through the circulation of coolant, the roller surface of the fixed cooling roller 44 and the moving cooling roller 45 can maintain a stable low temperature state, thereby absorbing the heat of the silicone sheet, accelerating its cooling and curing, and improving production and processing efficiency.

[0029] Working principle: When using this device, the uncured thermally conductive silicone sheet is released from the unwinding roller 12 on one side of the frame 1. After being preheated by the preheating component 2, the silicone sheet reaches the initial temperature required for hot pressing. Subsequently, the preheated silicone sheet enters the hot pressing component 3 for processing. The first electric push rod 32 at the top drives the second hot pressing plate 34 to move downward and fit tightly against the first hot pressing plate 33. Pressure is applied to the silicone sheet, and combined with the preheating temperature, it causes the molecular chains inside the silicone sheet to undergo a cross-linking reaction, completing the pre-forming hot pressing. After the hot pressing is completed, the surfaces of the fixed cooling roller 44 and the moving cooling roller 45 of the cooling and curing component 4 contact the upper and lower surfaces of the silicone sheet. The inside of the component forms a closed circulation channel through the water inlet pipe 46 and the water outlet pipe 47. When the coolant flows in the inner cavity of the roller, it absorbs the heat of the silicone sheet, accelerates the cooling and curing of the silicone sheet, and improves the production and processing efficiency.

[0030] When processing thermally conductive silicone sheets of different thicknesses, the second electric push rod 43 extends or retracts to drive the movable frame 413 to move. Multiple movable blocks 48 drive the moving cooling roller 45 to move towards or away from the fixed cooling roller 44, thereby adjusting the distance between the moving cooling roller 45 and the fixed cooling roller 44 to accommodate thermally conductive silicone sheets of different thicknesses.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A rapid-curing thermally conductive silicone sheet thermoforming machine, characterized in that: It includes a frame (1) and a take-up roller (11) and an unwind roller (12) rotatably connected to both sides of the frame (1). A preheating component (2) for preheating the raw material to be hot-pressed is provided on one side of the unwind roller (12). A hot pressing component (3) for hot pressing the raw material is provided downstream of the preheating component (2). A cooling and curing component (4) for rapidly cooling and curing the raw material after hot pressing is provided downstream of the hot pressing component (3).

2. The rapid-curing thermally conductive silicone sheet thermoforming machine as described in claim 1, characterized in that: The preheating assembly (2) includes two first mounting brackets (21) fixedly connected to the frame (1), and two heating rollers (22) are rotatably connected to the two first mounting brackets (21). The two heating rollers (22) are used to preheat both sides of the silicone sheet.

3. The rapid-curing thermally conductive silicone sheet thermoforming machine as described in claim 1, characterized in that: The hot pressing assembly (3) includes a second mounting bracket (31) fixedly connected to the frame (1) and a first electric push rod (32) fixedly connected to the second mounting bracket (31). A first hot pressing plate (33) is fixedly connected to the second mounting bracket (31), and a second hot pressing plate (34) is fixedly connected to the extended end of the first electric push rod (32). The first hot pressing plate (33) is used to cooperate with the second hot pressing plate (34) to perform hot pressing processing on the silicone sheet.

4. The rapid-curing thermally conductive silicone sheet thermoforming machine as described in claim 1, characterized in that: The cooling and curing assembly (4) includes a third mounting bracket (41) and a plurality of fourth mounting brackets (42) fixedly connected to the frame (1). A second electric push rod (43) is fixedly connected to the third mounting bracket (41). A plurality of fixed cooling rollers (44) and movable cooling rollers (45) with adjustable spacing are provided on the plurality of fourth mounting brackets (42). The movable cooling rollers (45) can adjust the spacing between themselves and the fixed cooling rollers (44) to accommodate silicone sheets of various thicknesses.

5. The rapid-curing thermally conductive silicone sheet thermoforming machine as described in claim 4, characterized in that: The fourth mounting bracket (42) is provided in two sets. Each set of the fourth mounting bracket (42) has a fixed cooling roller (44) rotatably connected to it, and two movable blocks (48) slidably connected to each set of the fourth mounting bracket (42). The two movable blocks (48) are rotatably connected to the two ends of the moving cooling roller (45). The two ends of the fixed cooling roller (44) and the moving cooling roller (45) are fixedly connected to a ring-shaped rotating block (411). The movable block (48) and the fourth mounting bracket (42) are provided with a movable groove that matches the size of the movable block (48). The two sides of the movable block (48) are fixedly connected to a slider (49) with a T-shaped cross section. The fourth mounting bracket (42) is provided with a sliding groove (410) that matches the size of the slider (49).

6. The rapid-curing thermally conductive silicone sheet thermoforming machine as described in claim 5, characterized in that: A movable frame (413) is fixedly connected to a plurality of the movable blocks (48), and the top of the movable frame (413) is fixedly connected to the protruding end of the second electric push rod (43).

7. The rapid-curing thermally conductive silicone sheet thermoforming machine as described in claim 5, characterized in that: The fixed cooling roller (44) and the moving cooling roller (45) are respectively provided with an inlet pipe (46) and an outlet pipe (47) at both ends. The inlet pipe (46) is used to introduce coolant into the fixed cooling roller (44) and the moving cooling roller (45) to improve the cooling and curing effect of the two on the silicone sheet.

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