Extrusion device for processing heat-conducting double-faced adhesive tape

Abstract

The extrusion device comprises a center plate, an extrusion barrel is fixedly installed at the center position in the center plate, upper stand columns are fixedly installed at the four corners of the upper surface of the center plate, and an upper top plate is fixedly installed among the top ends of the four upper stand columns. A servo motor is fixedly mounted in the center of the upper surface of the upper top plate through bolts, an output shaft of the servo motor is fixedly connected with a threaded lead screw, the threaded lead screw is sleeved with a threaded cylinder, the threaded cylinder is in threaded connection with the threaded lead screw, and an extrusion piston plate is fixedly mounted at the bottom end of the threaded cylinder; motor thread driving is not influenced by gas compressibility, so that the machining condition that the extrusion speed is unstable is avoided, the uniformity of the extrusion speed can be ensured only by controlling the servo motor to rotate at a constant speed in actual use, the use is more convenient, and the production efficiency is improved. And the processing condition of uneven extrusion quality caused by uneven speed in traditional pneumatic control can be effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of thermally conductive double-sided adhesive processing technology, specifically to an extrusion device for processing thermally conductive double-sided adhesive. Background Technology

[0002] Thermally conductive double-sided adhesive is typically made by mixing acrylic polymers with thermally conductive ceramic powder, coating both sides of fiberglass cloth or without a substrate, and then bonding it with silicone adhesive. Its thermal conductivity is generally between 0.8-1.0 W / m·K, and it possesses properties such as high thermal conductivity, high insulation, high temperature resistance, low temperature resistance, and aging resistance. Furthermore, it exhibits excellent flexibility, conformability, and self-adhesion, maintaining stable performance in various complex environments.

[0003] Thermally conductive double-sided adhesive tape is widely used in heat dissipation systems of electronic devices, such as heat sinks, CPU microprocessors, and LED lights. It fills in uneven surfaces, ensuring a tight fit between the heat sink and the heat source, thus improving heat dissipation efficiency. Due to its simple and convenient application—removing the release paper and then pasting—it is widely used in modern electronics manufacturing.

[0004] Thermally conductive adhesives require extrusion during production, which is performed using an extruder. Traditional extrusion devices are generally pneumatically controlled. Due to the compressibility of gas, the extrusion speed of thermally conductive double-sided adhesives can fluctuate, resulting in inconsistent extrusion quality and certain shortcomings. Therefore, this invention proposes a thread-driven extrusion device for processing thermally conductive double-sided adhesives. Utility Model Content

[0005] The purpose of this invention is to provide an extrusion device for processing thermally conductive double-sided adhesive tape, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an extrusion device for processing thermally conductive double-sided adhesive, comprising a center plate, an extrusion barrel fixedly installed at the center of the center plate, upper columns fixedly installed at the four corners of the upper surface of the center plate, an upper top plate fixedly installed between the tops of the four upper columns, a servo motor fixedly installed at the center of the upper surface of the upper top plate by bolts, a threaded screw fixedly connected to the output shaft of the servo motor, a threaded cylinder sleeved on the threaded screw, the threaded cylinder and the threaded screw being threadedly connected, an extrusion piston plate fixedly installed at the bottom end of the threaded cylinder, the extrusion piston plate being placed inside the extrusion barrel and slidably connected to the extrusion barrel, guide columns fixedly installed on both sides of the upper surface of the extrusion piston plate, the tops of two guide columns extending through the upper top plate, the guide columns being slidably connected to the upper top plate.

[0007] Preferably, a limiting component is fixedly installed at the top of each of the two guide posts, and the diameter of the limiting component is larger than the diameter of the guide post.

[0008] Preferably, the bottom end of the extrusion barrel is fixedly installed with a discharge port, the extrusion barrel and the discharge port adopt an integral molding structure design, and the inner wall of the discharge port is provided with internal threads.

[0009] Preferably, an extrusion head is provided inside the discharge port, and a threaded portion adapted to the internal thread is provided on the outer wall of the top end of the extrusion head, and the extrusion head and the discharge port are detachably threadedly connected.

[0010] Preferably, a lower support column is fixedly installed at each of the four corners of the lower surface of the center plate, and a lower base plate is fixedly installed between the bottom ends of the four lower support columns.

[0011] Preferably, anti-slip pads are adhered to the four corners of the lower surface of the bottom plate with adhesive, and the anti-slip pads are rubber anti-slip pads.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] The thermally conductive double-sided adhesive extrusion device of this utility model adopts a motor-driven screw transmission structure for its extrusion drive. Compared with the traditional cylinder-controlled drive, the motor screw drive of this utility model is not affected by the compressibility of gas, so there will be no processing situation where the extrusion speed fluctuates. In actual use, it is only necessary to control the servo motor to rotate at a constant speed to ensure the uniformity of the extrusion speed, which is more convenient to use. It can effectively avoid the processing situation where the extrusion quality is inconsistent due to the uneven speed of traditional pneumatic control, improve the uniformity of thermally conductive double-sided adhesive extrusion, and effectively improve the actual use effect and extrusion quality.

[0014] Meanwhile, the extrusion head and the discharge port are detachably connected by threads. In actual use, extrusion heads of different shapes or sizes can be replaced by threaded disassembly and assembly, thereby completing the extrusion of thermally conductive double-sided tape of different sizes or shapes. This effectively improves the extrusion versatility of the extrusion device of this utility model, and can meet the extrusion of thermally conductive double-sided tape of different sizes or shapes. It greatly improves the extrusion size applicability of the overall structure of this utility model, reduces the limitation of use, and has a good practical effect. Moreover, the installation and disassembly of the extrusion head is convenient, making it more convenient to use. Attached Figure Description

[0015] Figure 1 This is a front view of the extrusion device according to an embodiment of the present invention.

[0016] Figure 2 This is a bottom view of the extrusion device according to an embodiment of the present invention.

[0017] Figure 3 This is a top view of the extrusion device according to an embodiment of the present invention.

[0018] Figure 4 This is a schematic diagram of the internal cross-sectional structure of the extrusion device according to an embodiment of the present invention.

[0019] In the diagram: 1. Center plate; 2. Extrusion barrel; 3. Upper column; 4. Upper top plate; 5. Servo motor; 6. Threaded screw; 7. Threaded cylinder; 8. Extrusion piston plate; 9. Guide column; 10. Limiting component; 11. Discharge port; 12. Extrusion head; 13. Threaded part; 14. Lower support column; 15. Lower bottom plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" 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.

[0023] Please see Figure 1-4An embodiment of this utility model provides: an extrusion device for processing thermally conductive double-sided adhesive, including a center plate 1, an extrusion barrel 2 fixedly installed at the center of the center plate 1, upper columns 3 fixedly installed at the four corners of the upper surface of the center plate 1, an upper top plate 4 fixedly installed between the tops of the four upper columns 3, a servo motor 5 fixedly installed at the center of the upper surface of the upper top plate 4 by bolts, a threaded screw 6 fixedly connected to the output shaft of the servo motor 5, a threaded cylinder 7 sleeved on the threaded screw 6, the threaded cylinder 7 and the threaded screw 6 being threadedly connected, an extrusion piston plate 8 fixedly installed at the bottom end of the threaded cylinder 7, the extrusion piston plate 8 being placed inside the extrusion barrel 2 and slidably connected to the extrusion barrel 2;

[0024] Based on the above structure, this utility model can be selected by the servo motor 5. When the servo motor 5 rotates clockwise, it can synchronously drive the threaded screw 6 at the bottom to rotate clockwise through the output shaft. When the threaded screw 6 rotates clockwise, the threaded cylinder 7 connected to its external thread can be lowered along the threaded screw 6. In this way, the lowering of the threaded cylinder 7 can drive the extrusion piston plate 8 at the bottom to move down, so that the extrusion piston plate 8 can extrude the heat-conducting double-sided adhesive inside the extrusion barrel 2.

[0025] When the servo motor 5 rotates counterclockwise, the threaded cylinder 7 on the threaded screw 6 will move upward and reset, so that the extrusion piston plate 8 can be moved out of the extrusion barrel 2. At this time, thermally conductive double-sided tape can be added to the extrusion barrel 2 to facilitate subsequent extrusion work.

[0026] Furthermore, guide posts 9 are fixedly installed on both sides of the upper surface of the extrusion piston plate 8. The top ends of the two guide posts 9 protrude through the upper top plate 4, and the guide posts 9 are slidably connected to the upper top plate 4.

[0027] The guide post 9, by means of this design, can have a movable displacement guiding property, thereby improving the displacement linearity of the extrusion piston plate 8 and ensuring normal displacement guiding performance.

[0028] In this embodiment, to prevent the threaded cylinder 7 from coming off the threaded screw 6, a limiting member 10 is fixedly installed at the top of each of the two guide posts 9. The diameter of the limiting member 10 is larger than the diameter of the guide post 9. Thus, the limiting member 10 can effectively limit and block the structure. When the threaded cylinder 7 reaches the bottom, it is prevented from coming off the threaded screw 6, thereby improving the performance and structural stability.

[0029] In this embodiment, in order to facilitate the extrusion and discharge of the extruded thermally conductive double-sided adhesive, a discharge port 11 is fixedly installed at the bottom of the extrusion barrel 2. The extrusion barrel 2 and the discharge port 11 adopt an integral molding structure design, and the inner wall of the discharge port 11 is provided with internal threads.

[0030] Furthermore, an extrusion head 12 is provided inside the discharge port 11, and a threaded portion 13 adapted to the internal thread is provided on the outer wall of the top end of the extrusion head 12. The extrusion head 12 and the discharge port 11 are detachably threadedly connected.

[0031] With this structural design, the thermally conductive double-sided adhesive, after being extruded by the extrusion piston plate 8, can enter the extrusion head 12 through the discharge port 11 of the extrusion cylinder 2. During the continuous downward extrusion process, the thermally conductive double-sided adhesive will eventually be extruded through the extrusion head 12, thereby completing the threaded drive extrusion work of this utility model and ensuring the extrusion effect of normal thermally conductive double-sided adhesive processing.

[0032] The extrusion head 12 and the discharge port 11 are detachably connected by threads. In actual use, extrusion heads 12 of different shapes or sizes can be replaced by threaded disassembly and assembly, thereby completing the extrusion of thermally conductive double-sided tape of different sizes or shapes. This effectively improves the extrusion versatility of the extrusion device of this utility model, and can meet the extrusion of thermally conductive double-sided tape of different sizes or shapes. It greatly improves the extrusion size applicability of the overall structure of this utility model, reduces the limitation of use, and has a good practical effect. Moreover, the installation and disassembly of the extrusion head 12 are convenient, making it more convenient to use.

[0033] In this embodiment, in order to ensure the support and stability of the bottom structure of this utility model, lower support columns 14 are fixedly installed at the four corners of the lower surface of the center plate 1, and a lower base plate 15 is fixedly installed between the bottom ends of the four lower support columns 14. Anti-slip pads are glued to the four corners of the lower surface of the lower base plate 15, and the anti-slip pads are rubber anti-slip pads.

[0034] Working principle: When using this utility model, thermally conductive double-sided adhesive can be injected into the inside of the extrusion barrel 2. After the thermally conductive double-sided adhesive is injected, the servo motor 5 is started. The servo motor 5 can be selected. When the servo motor 5 rotates clockwise, it can synchronously drive the threaded screw 6 at the bottom to rotate clockwise through the output shaft. When the threaded screw 6 rotates clockwise, the threaded cylinder 7 connected to its external thread can descend along the threaded screw 6. In this way, the descent of the threaded cylinder 7 can drive the extrusion piston plate 8 at the bottom to move down. Thus, the extrusion piston plate 8 can extrude the thermally conductive double-sided adhesive inside the extrusion barrel 2.

[0035] After being extruded by the extrusion piston plate 8, the thermally conductive double-sided adhesive can enter the extrusion head 12 through the discharge port 11 of the extrusion cylinder 2. During the continuous downward extrusion process, the thermally conductive double-sided adhesive will eventually be extruded through the extrusion head 12, thereby completing the threaded drive extrusion work of this utility model and ensuring the extrusion effect of normal thermally conductive double-sided adhesive processing.

[0036] When the extrusion piston plate 8 descends to the bottom, the servo motor 5 rotates counterclockwise. When the servo motor 5 rotates counterclockwise, the threaded cylinder 7 on the threaded screw 6 moves upward and resets, so that the extrusion piston plate 8 can be moved out of the extrusion barrel 2. At this time, thermally conductive double-sided adhesive can be added to the extrusion barrel 2, and then the extrusion processing of the thermally conductive double-sided adhesive can be completed in the above manner.

[0037] The thermally conductive double-sided adhesive extrusion device of this utility model adopts a motor-driven screw transmission structure for its extrusion drive. Compared with the traditional cylinder-controlled drive, the motor screw drive of this utility model is not affected by the compressibility of gas, so there will be no processing situation where the extrusion speed fluctuates. In actual use, it is only necessary to control the servo motor to rotate at a constant speed to ensure the uniformity of the extrusion speed, which is more convenient to use. It can effectively avoid the processing situation where the extrusion quality is inconsistent due to the uneven speed of traditional pneumatic control, improve the uniformity of thermally conductive double-sided adhesive extrusion, and effectively improve the actual use effect and extrusion quality.

[0038] Meanwhile, the extrusion head and the discharge port are detachably connected by threads. In actual use, extrusion heads of different shapes or sizes can be replaced by threaded disassembly and assembly, thereby completing the extrusion of thermally conductive double-sided tape of different sizes or shapes. This effectively improves the extrusion versatility of the extrusion device of this utility model, and can meet the extrusion of thermally conductive double-sided tape of different sizes or shapes. It greatly improves the extrusion size applicability of the overall structure of this utility model, reduces the limitation of use, and has a good practical effect. Moreover, the installation and disassembly of the extrusion head is convenient, making it more convenient to use.

[0039] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. In an extrusion device for processing a heat-conducting double-sided tape, comprising a central plate (1), characterized in that, The center plate (1) is internally fixedly installed with an extrusion barrel (2), the upper surface of the center plate (1) is fixedly installed with an upper stand column (3) at four corners, four upper stand columns (3) are fixedly installed between the top ends of the four upper stand columns (3), an upper top plate (4) is fixedly installed between the top ends of the four upper stand columns (3), a servo motor (5) is fixedly installed on the upper surface of the upper top plate (4) through bolts, a threaded screw rod (6) is fixedly connected to the output shaft of the servo motor (5), a threaded cylinder (7) is sleeved on the threaded screw rod (6), the threaded cylinder (7) is threadedly connected with the threaded screw rod (6), an extrusion piston plate (8) is fixedly installed at the bottom end of the threaded cylinder (7), the extrusion piston plate (8) is arranged inside the extrusion barrel (2) and is in sliding connection with the extrusion barrel (2), guide columns (9) are fixedly installed on the upper surface of the extrusion piston plate (8), the top ends of the two guide columns (9) pass through the upper top plate (4) and are arranged, and the guide columns (9) are in sliding connection with the upper top plate (4).

2. The extrusion device for processing heat-conductive double-sided adhesive tape according to claim 1, characterized in that: The top ends of the two guide columns (9) are fixedly installed with limit pieces (10), and the diameter of the limit piece (10) is greater than the diameter of the guide column (9).

3. The extrusion device for processing heat-conductive double-sided adhesive tape according to claim 1, characterized in that: The bottom end of the extrusion barrel (2) is fixedly installed with a discharge port (11), the extrusion barrel (2) and the discharge port (11) are designed in an integral molding structure, and the inner wall of the discharge port (11) is provided with an internal thread.

4. The extrusion device for processing heat-conductive double-sided adhesive tape according to claim 3, characterized in that: An extrusion head (12) is arranged in the discharge port (11), a threaded portion (13) matched with the internal thread is arranged on the outer wall of the top end of the extrusion head (12), and the extrusion head (12) and the discharge port (11) are detachably threadedly connected.

5. The extrusion device for processing heat-conductive double-sided adhesive tape according to claim 1, characterized in that: The lower surface of the center plate (1) is fixedly installed with a lower support column (14) at four corners, and a lower bottom plate (15) is fixedly installed between the bottom ends of the four lower support columns (14).

6. The extrusion device for processing heat-conductive double-sided adhesive tape according to claim 5, characterized in that: Glue is adhered to the anti-skid bottom pads on the lower surface of the lower bottom plate (15), and the anti-skid bottom pads are rubber anti-skid pads.

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