Smearing device for heat-conducting silica gel

Abstract

The utility model discloses a smearing device for heat-conducting silica gel, which comprises a feeding bin chamber, a feeding pipe is arranged at the top of the feeding bin chamber, the feeding pipe is communicated with the interior of the feeding bin chamber, a material pushing plate is arranged in the feeding bin chamber in a sliding manner, and the material pushing plate slides under the injection and extrusion of the heat-conducting silica gel. Rotating rods are symmetrically and rotationally installed at the bottom of the feeding bin in a sealed mode, rounded corner plates are fixedly installed in the middles of the rotating rods, the rounded corner plates rotate under the movement of a pushing plate, heat conduction silica gel is supplied through a feeding pipe, the pushing plate is pushed by the heat conduction silica gel to drive the rounded corner plates to rotate, sealing of the bottom of the feeding bin by the two rounded corner plates is omitted, and the sealing effect is good. And after smearing is completed, the fillet plates reset and seal the bottom of the feeding bin, the heat conduction silica gel is prevented from leaking out under the action of gravity, meanwhile, the tangent roller blocks the leaked heat conduction silica gel between the two fillet plates, and the heat conduction silica gel is prevented from falling off.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal conductive silicone coating, and specifically relates to an application device for thermal conductive silicone. Background Technique

[0002] Thermal conductive silicone can be widely coated on the contact surfaces between heating elements and heat dissipation facilities in various electronic products and electrical equipment, playing the role of a heat transfer medium and having properties such as moisture-proof, dust-proof, corrosion-proof, and shock-proof. When applying thermal conductive silicone, some products use a screen printer for the application.

[0003] When using a screen printer, generally, the material is discharged through a discharge pipe installed at the discharge position of the screen printer and fed through a thermal conductive silicone feed pipe. However, after a single application of thermal conductive silicone, the thermal conductive silicone will remain at the feed position. Under the action of gravity, these residual thermal conductive silicones will drip onto the workbench. At the same time, since the discharge position of the thermal conductive silicone is a rectangular discharge port, due to the fact that the thermal conductive silicone is in a glue-like state, it will also drip onto the workbench under the action of gravity, resulting in a large amount of residual thermal conductive silicone on the workbench and also causing waste of the thermal conductive silicone. Content of the Utility Model

[0004] The purpose of the utility model is to provide an application device for thermal conductive silicone to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: An application device for thermal conductive silicone, including a feed bin chamber. A feed pipe is installed at the top of the feed bin chamber, and the feed pipe is in communication with the inside of the feed bin chamber. A push plate is slidably installed inside the feed bin chamber, and the push plate slides under the injection and extrusion of the thermal conductive silicone. The bottom of the feed bin chamber is symmetrically and sealingly rotatably installed with rotating rods. A rounded corner plate is fixedly installed in the middle of the rotating rod, and the rounded corner plate rotates under the movement of the push plate. One end of the rounded corner plate is in contact with the inside of the feed bin chamber, and the closer ends of the two rotating rods are in contact with each other. Installation frames are symmetrically and fixedly installed on both sides of the feed bin chamber. A rubber push plate for pushing the thermal conductive silicone is fixedly installed in the middle of the installation frame. Through holes for the thermal conductive silicone to pass through are equidistantly opened in the middle of the push plate.

[0006] As a further preferred technical solution of this technical solution, both sides at the bottom of the push plate are rotatably installed with connecting rods through pin shafts. A chute is opened at the top of the rounded corner plate, and a slider is slidably installed inside the chute. The top of the slider is rotatably connected to the end of the connecting rod far from the push plate.

[0007] As a further preferred technical solution of this technical solution, torsion springs are symmetrically sleeved at both ends of the rotating rod. One end of the torsion spring is fixedly connected to one side of the feed bin chamber, and the other end of the torsion spring is fixedly connected to the end of the rotating rod.

[0008] As a further preference of the technical solution, fixed blocks are symmetrically and fixedly installed inside the feed bin chamber. A limiting rod is fixedly installed between the fixed block and the top of the feed bin chamber. A limiting hole is opened at the position of the pushing plate corresponding to the limiting rod, and the limiting hole is slidably connected to the limiting rod. A return spring is sleeved outside the limiting rod. One end of the return spring is fixedly connected to the inner wall top of the feed bin chamber, and the other end of the return spring is fixedly connected to the surface of the pushing plate.

[0009] As a further preference of the technical solution, a mounting rod is movably installed in the middle of the bottom end of the feed bin chamber. A tangent roller is fixedly installed in the middle of the mounting rod, and the tangent roller is tangent to the ends of the two rounded plates.

[0010] As a further preference of the technical solution, mounting blocks are installed on the outer sides of both ends of the mounting rod. A rotating hole is opened at the bottom end of the mounting block, and the rotating hole is rotatably connected to the mounting rod. A tension spring is fixedly installed on the top of the mounting block, and the top of the tension spring is fixedly connected to the end surface of the feed bin chamber.

[0011] The utility model provides a coating device for thermal conductive silicone, which has the following beneficial effects:

[0012] (1) In the utility model, thermal conductive silicone is fed through a feed pipe. Under the pushing of the thermal conductive silicone on the pushing plate, the rounded plates will be driven to rotate, canceling the sealing of the bottom of the feed bin chamber by the two rounded plates. By controlling the movement of the device with a screen printing machine, the operation of coating thermal conductive silicone on the product surface can be carried out. After the coating is completed, the rounded plates will reset and seal the bottom of the feed bin chamber to prevent the thermal conductive silicone from leaking under the action of gravity.

[0013] (2) Under the rotational thrust of the two rounded plates in the utility model, the tangent roller will also move. After the coating is completed, under the action of the tension spring, the tangent roller will be driven to move to a position tangent to the ends of the two rounded plates, so as to block the thermal conductive silicone that has leaked between the tangent roller and the two rounded plates and prevent the thermal conductive silicone from falling. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 is a schematic diagram of the sectional structure of the utility model;

[0016] Figure 3 is a schematic diagram of the partial sectional explosion structure of the utility model;

[0017] Figure 4 is Figure 3 the enlarged view of part A in

[0018] In the figure: 1, feed bin chamber; 2, feed pipe; 3, pushing plate; 4, rotating rod; 5, rounded corner plate; 6, mounting frame; 7, rubber pushing plate; 8, perforation; 9, connecting rod; 10, chute; 11, slider; 12, torsion spring; 13, fixing block; 14, limiting rod; 15, limiting hole; 16, reset spring; 17, mounting rod; 18, tangent rod; 19, mounting block; 20, rotating hole; 21, tension spring. Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] The present invention provides a technical solution: As Figures 1 to 4 shown, in this embodiment, a coating device for thermal conductive silicone includes a feed bin chamber 1. A feed pipe 2 is installed at the top of the feed bin chamber 1, and the feed pipe 2 is communicatively arranged with the interior of the feed bin chamber 1. A pushing plate 3 is slidably installed inside the feed bin chamber 1, and the pushing plate 3 slides under the injection and extrusion of thermal conductive silicone. The bottom of the feed bin chamber 1 is symmetrically and sealingly rotatably installed with rotating rods 4. A rounded corner plate 5 is fixedly installed in the middle of the rotating rod 4, and the rounded corner plate 5 rotates under the movement of the pushing plate 3. One end of the rounded corner plate 5 is in contact with the interior of the feed bin chamber 1, and the closer ends of the two rotating rods 4 are in contact with each other. Mounting frames 6 are symmetrically and fixedly installed on both sides of the feed bin chamber 1. A rubber pushing plate 7 for pushing thermal conductive silicone is fixedly installed in the middle of the mounting frame 6. Perforations 8 for the passage of thermal conductive silicone are equidistantly opened in the middle of the pushing plate 3.

[0021] As Figures 1 to 4 shown, both sides of the bottom of the pushing plate 3 are rotatably installed with connecting rods 9 through pin shafts. A chute 10 is opened at the top of the rounded corner plate 5, and a slider 11 is slidably installed inside the chute 10. The top of the slider 11 is rotatably connected to the end of the connecting rod 9 far from the pushing plate 3.

[0022] Thermal conductive silicone is fed into the interior of the feed bin chamber 1 through the feed pipe 2. The thermal conductive silicone will have a downward thrust on the pushing plate 3. At the same time, the thermal conductive silicone will also enter the bottom of the feed bin chamber 1 through the perforations 8. When the pushing plate 3 moves downward, a thrust will be exerted on the rounded corner plate 5 through the connection of the connecting rod 9, which will drive the rounded corner plate 5 to rotate. The thermal conductive silicone will slide out through between the two rounded corner plates 5. By controlling the movement of this device with a screen printing machine, the operation of coating thermal conductive silicone on the surface of the product can be carried out.

[0023] As Figures 1 to 4 shown, torsion springs 12 are symmetrically sleeved at both ends of the rotating rod 4. One end of the torsion spring 12 is fixedly connected to one side of the feed bin chamber 1, and the other end of the torsion spring 12 is fixedly connected to the end of the rotating rod 4.

[0024] After the application is completed, the thermal conductive silicone will no longer exert a thrust on the pushing plate 3. Under the restoring force of the torsion spring 12, the rounded plate 5 will be driven to rotate, so as to close the bottom of the feeding bin chamber 1 between the two rounded plates 5 and prevent the thermal conductive silicone from falling off.

[0025] As Figures 1 to 4 As shown in the figure, fixed blocks 13 are symmetrically and fixedly installed inside the feeding bin chamber 1. A limiting rod 14 is fixedly installed between the fixed block 13 and the top of the feeding bin chamber 1. The pushing plate 3 is provided with a limiting hole 15 corresponding to the position of the limiting rod 14. The limiting hole 15 is slidably connected with the limiting rod 14. A restoring spring 16 is sleeved on the outer side of the limiting rod 14. One end of the restoring spring 16 is fixedly connected to the inner wall top of the feeding bin chamber 1, and the other end of the restoring spring 16 is fixedly connected to the surface of the pushing plate 3.

[0026] When the thermal conductive silicone pushes the pushing plate 3 downward, at this time the restoring spring 16 is in a stretched state. After the application is completed, the thermal conductive silicone will no longer exert a thrust on the pushing plate 3. Under the restoring force of the restoring spring 16, the pushing plate 3 will be driven to move upward to close the bottom of the feeding bin chamber 1 between the two rounded plates 5.

[0027] As Figures 1 to 4 As shown in the figure, a mounting rod 17 is movably installed in the middle of the bottom end of the feeding bin chamber 1. A tangent rod 18 is fixedly installed in the middle of the mounting rod 17. The tangent rod 18 is tangent to the ends of the two rounded plates 5.

[0028] The tangent rod 18 can block the thermal conductive silicone between the two rounded plates 5 to prevent the thermal conductive silicone from falling off.

[0029] As Figures 1 to 4 As shown in the figure, mounting blocks 19 are installed on the outer sides of both ends of the mounting rod 17. A rotating hole 20 is opened at the bottom end of the mounting block 19. The rotating hole 20 is rotatably connected with the mounting rod 17. A tension spring 21 is fixedly installed on the top of the mounting block 19. The top of the tension spring 21 is fixedly connected to the end surface of the feeding bin chamber 1.

[0030] Under the rotating thrust of the two rounded plates 5, the tangent rod 18 will also move. At this time, the tension spring 21 is in a stretched state. When closing the bottom of the feeding bin chamber 1 between the two rounded plates 5, the two rounded plates 5 will also cancel the push on the tangent rod 18. Under the action of the tension spring 21, the tangent rod 18 will be driven to move to a position tangent to the ends of the two rounded plates 5, so as to block the thermal conductive silicone that has leaked between the tangent rod 18 and the two rounded plates 5 and prevent the thermal conductive silicone from falling off.

[0031] The present utility model provides a coating device for thermal conductive silicone, and the specific working principle is as follows:

[0032] When the device is in use, the feeding bin chamber 1 is fixed on the thermal conductive silicone coating and silk-screen printing machine. When applying thermal conductive silicone, the thermal conductive silicone is fed through the feeding pipe 2. The thermal conductive silicone will have a downward thrust on the pushing plate 3. At this time, the return spring 16 is in a stretched state. At the same time, the thermal conductive silicone will also enter the bottom of the feeding bin chamber 1 through the through hole 8. When the pushing plate 3 moves downward, it will have a thrust on the rounded plate 5 through the connection of the connecting rod 9, which will drive the rounded plate 5 to rotate. At this time, the torsion spring 12 is in a twisted state, canceling the closure of the bottom of the feeding bin chamber 1 by the two rounded plates 5. At this time, the slider 11 will slide inside the chute 10. Under the rotational thrust of the two rounded plates 5, the tangent rod 18 will also move. At this time, the tension spring 21 is in a stretched state. As the thermal conductive silicone is fed, the thermal conductive silicone will slide out between the two rounded plates 5. By controlling the movement of this device with the silk-screen printing machine, the operation of applying thermal conductive silicone to the surface of the product can be carried out. After the application is completed, the thermal conductive silicone will no longer have a thrust on the pushing plate 3. Under the reset force of the torsion spring 12 and the return spring 16, it will drive the rounded plate 5 to rotate and the pushing plate 3 to move upward. At this time, the bottom of the feeding bin chamber 1 will be closed between the two rounded plates 5, and the two rounded plates 5 will also cancel the push on the tangent rod 18. Under the action of the tension spring 21, it will drive the tangent rod 18 to move to a position tangent to the ends of the two rounded plates 5, for blocking the thermal conductive silicone that has leaked between the tangent rod 18 and the two rounded plates 5 to prevent the thermal conductive silicone from falling.

[0033] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A thermally conductive silicone coating device, comprising a feed chamber (1), a feed pipe (2) installed on the top of the feed chamber (1), the feed pipe (2) being connected to the interior of the feed chamber (1), characterized in that: A push plate (3) is slidably installed inside the feed chamber (1), and the push plate (3) slides under the injection and extrusion of the thermal conductive silicone. A rotating rod (4) is symmetrically and sealedly installed at the bottom of the feed chamber (1). A rounded plate (5) is fixedly installed in the middle of the rotating rod (4). The rounded plate (5) rotates under the movement of the push plate (3). One end of the rounded plate (5) is in contact with the inside of the feed chamber (1), and the ends of the two rotating rods (4) that are close to each other are in contact. The two sides of the feed chamber (1) are symmetrically and fixedly installed with mounting frames (6). A rubber push plate (7) for pushing the thermal conductive silicone is fixedly installed in the middle of the mounting frame (6). The middle of the push plate (3) is equidistantly provided with perforations (8) for the thermal conductive silicone to pass through.

2. The thermally conductive silicone coating device according to claim 1, characterized in that: Connecting rods (9) are rotatably mounted on both sides of the bottom of the push plate (3) via axle pins, a slide groove (10) is provided on the top of the rounded plate (5), a slider (11) is slidably mounted inside the slide groove (10), and the top of the slider (11) is rotatably connected to the end of the connecting rod (9) away from the push plate (3).

3. The thermally conductive silicone coating device according to claim 1, characterized in that: Torsion springs (12) are symmetrically sleeved on both ends of the rotating rod (4), one end of the torsion spring (12) is fixedly connected to one side of the feed chamber (1), and the other end of the torsion spring (12) is fixedly connected to the end of the rotating rod (4).

4. The thermally conductive silicone coating device according to claim 3, characterized in that: A fixed block (13) is symmetrically fixedly installed inside the feed chamber (1), a limiting rod (14) is fixedly installed between the fixed block (13) and the top of the feed chamber (1), a limiting hole (15) is opened on the push plate (3) corresponding to the position of the limiting rod (14), the limiting hole (15) is slidably connected to the limiting rod (14), and a return spring (16) is sleeved on the outer side of the limiting rod (14), one end of the return spring (16) is fixedly connected to the top of the inner wall of the feed chamber (1), and the other end of the return spring (16) is fixedly connected to the surface of the push plate (3).

5. The thermally conductive silicone coating device according to claim 4, characterized in that: A mounting rod (17) is movably mounted in the middle of the bottom end of the feed chamber (1), and a tangent rod (18) is fixedly mounted in the middle of the mounting rod (17). The tangent rod (18) is tangent to the ends of the two rounded plates (5).

6. The thermally conductive silicone coating device according to claim 5, characterized in that: Mounting blocks (19) are installed on the outer sides of both ends of the mounting rod (17), a rotating hole (20) is opened at the bottom end of the mounting block (19), and the rotating hole (20) is rotatably connected to the mounting rod (17). A tension spring (21) is fixedly installed on the top of the mounting block (19), and the top of the tension spring (21) is fixedly connected to the end surface of the feed chamber (1).

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