Automatic coating device for heat-conducting silicone grease

Abstract

The application relates to the technical field of semiconductor refrigeration fin processing, and discloses an automatic smearing device for heat-conducting silicone grease, which comprises a bearing mechanism and a smearing mechanism. The bearing mechanism comprises a bearing table suitable for positioning a workpiece to be smeared and a trigger piece, and the smearing mechanism comprises a smearing head. The bearing table for positioning the workpiece to be smeared is arranged, and the smearing surface can reciprocate along a first direction and a second direction. When the smearing surface reciprocates along the first direction, the heat-conducting silicone grease on the smearing surface of the workpiece to be smeared can be uniformly smeared on the smearing surface. When the smearing surface moves along the second direction, the distance between the smearing surface and the smearing surface of the workpiece to be smeared can be adjusted, so that the smearing thickness of the heat-conducting silicone grease is effectively controlled. Meanwhile, the initial position of the smearing surface can be accurately positioned through the additional trigger piece, so that the initial position of the smearing surface is taken as the starting point for adjusting the position of the smearing surface, and the distance between the smearing surface and the smearing surface of the workpiece to be smeared can be accurately adjusted.

Description

Technical Field

[0001] This application relates to the field of semiconductor cooling chip processing technology, and more specifically, to an automatic application device for thermal grease. Background Technology

[0002] The content in this section provides only background information related to this application and may not constitute prior art.

[0003] A semiconductor refrigeration chip is a type of refrigeration device based on the Peltier effect of semiconductors. Due to its advantages such as high cooling and heating efficiency and convenient switching between cooling and heating modes, semiconductor refrigeration chips have been widely used in the field of temperature control.

[0004] In related semiconductor cooling chip technologies, it is usually necessary to apply thermal grease to the working surface of the semiconductor cooling chip (i.e. the surface used for cooling or heating) to ensure reliable contact between the working surface of the semiconductor cooling chip and the contact surface of the component to be cooled or heated, thereby ensuring the cooling and heating effect of the semiconductor cooling chip.

[0005] Currently, the common method for applying thermal grease to the working surface of a semiconductor cooling chip is manual application. However, this method often makes it difficult to control the thickness of the thermal grease and is prone to uneven application. Summary of the Invention

[0006] In view of this, the purpose of this application is to provide an automatic application device that can effectively control the thickness of thermal grease and reliably ensure the uniformity of thermal grease application thickness.

[0007] The objective of this application is achieved through the following technical solution:

[0008] This application discloses an automatic application device for thermal grease, comprising:

[0009] The support mechanism includes a support platform adapted to position a workpiece to be coated; the workpiece to be coated has a surface to be coated.

[0010] The applicator includes an applicator head; the applicator head has an applicator surface parallel to the surface to be applicated, the applicator surface being located above and opposite to the surface to be applicated;

[0011] The coating surface is configured to reciprocate linearly along a first direction parallel to the surface to be coated and a second direction perpendicular to the surface to be coated;

[0012] The carrier mechanism further includes a trigger element configured to be triggered by the carrier platform to emit a trigger signal after the coating surface comes into contact with the surface to be coated.

[0013] In some possible embodiments, the trigger is located below the support platform; the support mechanism further includes:

[0014] An elastic element is used to elastically hold the support platform above the trigger element;

[0015] A positioning element, which is responsive to the trigger signal emitted by the triggering element, to position the carrier platform at the position that triggers the triggering element.

[0016] In some possible embodiments, the support platform is made of a material suitable for magnetic attraction, and the positioning element is an electromagnet located below the support platform;

[0017] When the support platform triggers the triggering element to emit the triggering signal, the support platform comes into contact with the electromagnet, and the electromagnet is energized in response to the triggering signal.

[0018] In some possible embodiments, the support mechanism further includes a guide post, one end of which is fixed and the other end of which extends along the second direction and passes through the support platform, and the guide post and the support platform are slidably engaged.

[0019] In some possible embodiments, the applicator further includes a first moving component and a second moving component, the first moving component being configured to output reciprocating linear motion along the first direction;

[0020] The second moving component includes:

[0021] A movable base defines a movable surface that forms an angle with the horizontal plane; the movable base is connected to the output end of the first movable component;

[0022] A movable lead screw is rotatably mounted on the movable base to output rotational motion about its own axis; the axis of the movable lead screw is parallel to the movable surface, and the applicator head is driven to cooperate with the movable lead screw to convert the rotational motion output by the movable lead screw into linear motion along the axis of the movable lead screw.

[0023] In some possible embodiments, the angle between the moving surface and the horizontal plane is an acute angle.

[0024] In some possible embodiments, the support platform is provided with a positioning groove adapted to the workpiece to be coated, and the workpiece to be coated can be snapped into the positioning groove in a snap-fit ​​manner.

[0025] In some possible embodiments, the support platform is provided with a material collection trough extending along the first direction, and the material collection trough is in communication with the positioning trough;

[0026] When the workpiece to be coated is positioned in the positioning groove, the surface to be coated is not lower than the bottom surface of the material collection groove.

[0027] In some possible embodiments, one end of the collection trough is an open structure, and the positioning groove is located near the opening of the collection trough;

[0028] The automatic coating device also includes a top-open collection chamber located on the movement path of the coating surface as it moves along the first direction. The collection chamber is adjacent to the opening of the material collection trough and is equipped with a scraper inside the collection chamber.

[0029] In some possible embodiments, the automatic application device further includes a feeding mechanism configured to provide thermal grease to the surface to be applied.

[0030] The technical solution of this application embodiment has at least the following advantages and beneficial effects:

[0031] This application incorporates a support platform for positioning the workpiece to be coated and a coating surface capable of reciprocating along a first and a second direction. When the coating surface reciprocates along the first direction, it evenly coats the workpiece surface with thermal grease. When the coating surface moves along the second direction, it adjusts the distance between the coating surface and the workpiece surface, thereby effectively controlling the coating thickness. Furthermore, by adding a trigger, the initial position of the coating surface can be precisely positioned, allowing it to be used as the starting point for adjusting the coating surface position, thus achieving precise adjustment of the distance between the coating surface and the workpiece surface. Attached Figure Description

[0032] Figure 1 A schematic diagram of the structure of the automatic application device provided in the embodiments of this application;

[0033] Figure 2 for Figure 1 A cross-sectional view of the automatic applicator shown;

[0034] Figure 3 for Figure 2 The enlarged view of the partial structure at point A shows the state of the trigger when it is triggered by the support platform;

[0035] Figure 4 A schematic diagram of the structure of the support mechanism provided in the embodiments of this application;

[0036] Figure 5 A schematic diagram of the application mechanism provided in the embodiments of this application;

[0037] Figure 6A schematic diagram of the structure of the applicator and the second moving component provided in the embodiments of this application;

[0038] Figure 7 This is a schematic diagram of the feeding mechanism provided in an embodiment of this application.

[0039] Icons: 10-Workpiece to be coated, 11-Surface to be coated, 20-Base, 30-Bearing mechanism, 31-Bearing platform, 311-Positioning groove, 312-Collection groove, 32-Trigger element, 33-Elastic element, 34-Positioning element, 35-Guide column, 40-Coating mechanism, 41-Coating head, 411-Coating surface, 42-First moving component, 43-Second moving component, 431-Moving seat, 4311-Moving surface, 432-Moving screw, 433-Moving drive motor, 434-Screw nut seat, 435-Guide rail, 50-Feeding mechanism, 51-Storage cylinder, 52-Piston, 53-Drive component, 531-Feeding motor, 532-Feeding screw, 533-Feeding slide, 534-Push column, 54-Bracket, 55-Discharge pipe, 60-Collection chamber, 61-Scraper. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments. The same reference numerals in the accompanying drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the described embodiments of this application without creative effort are within the scope of protection of this application.

[0041] Compared to the embodiments shown in the accompanying drawings, feasible embodiments within the scope of this application may have fewer components, other components not shown in the drawings, different components, differently arranged components, or components with different connections, etc. Furthermore, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0042] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in this specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components.

[0043] Please refer to Figures 1 to 7The embodiments of this application disclose an automatic thermal grease application device (hereinafter referred to as "automatic application device" for ease of explanation), which aims to apply thermal grease to the surface 11 of the workpiece 10 to be applied with a predetermined thickness, and can reliably ensure the uniformity of the thickness of the applied thermal grease, thereby overcoming at least the many drawbacks of manually applying thermal grease.

[0044] It should be noted that the workpiece 10 to be coated in the embodiments of this application can be a semiconductor cooling chip or a similar device, and the coating surface 11 refers to the working surface of the workpiece 10 to be coated, such as the surface of the semiconductor cooling chip used for cooling or heating.

[0045] like Figure 1 As shown, the automatic application device disclosed in the embodiments of this application may include a base 20, a support mechanism 30, and an application mechanism 40.

[0046] In the embodiments of this application, the base 20 provides a mounting carrier for components such as the support mechanism 30 and the coating mechanism 40. The support mechanism 30 supports and positions the workpiece 10 to be coated. Figure 2 and Figure 3 As shown, the support mechanism 30 may include a support platform 31, which may be disposed on the base 20. The support platform 31 is used to support and position the workpiece 10 to be coated. After positioning, the surface 11 to be coated of the workpiece 10 can face upwards, so that the thermal grease can be evenly applied to the surface 11 of the workpiece 10 to be coated with a predetermined thickness by the coating mechanism 40.

[0047] In order to ensure that the thermal grease is evenly applied to the surface 11 of the workpiece 10 to be coated at a predetermined thickness, such as... Figure 2 , Figure 3 , Figure 5 as well as Figure 6 As shown, the coating mechanism 40 may include a coating head 41, a first moving component 42, and a second moving component 43. The coating head 41 has a coating surface 411 parallel to the surface to be coated 11, which is located above and opposite to the surface to be coated 11 of the workpiece 10.

[0048] Furthermore, the application surface 411 of the application head 41 is configured to reciprocate linearly along a first direction parallel to the application surface 11 under the drive of the first moving component 42, thus, referring to Figure 3 As shown, when thermal grease is present on the surface 11 of the workpiece 10 to be coated, the thermal grease on the surface 11 to be coated can be evenly coated on each area of ​​the surface 11 by moving the coating surface 411 back and forth along the first direction above the surface 11 to be coated.

[0049] Understandably, the application surface 411 of the application head 41 can also be configured such that the area of ​​the application surface 411 is not less than the area of ​​the surface 11 to be applied. By making the area of ​​the application surface 411 greater than or equal to the area of ​​the surface 11 to be applied, when the application surface 411 moves along the first direction and crosses the surface 11 to be applied in a single movement, the application surface 411 can contact the thermal grease in all areas of the surface 11 to be applied, thereby improving the application efficiency and further ensuring the uniformity of the thermal grease applied to the surface 11 to be applied.

[0050] Meanwhile, the application surface 411 of the application head 41 is also configured to reciprocate linearly along a second direction perpendicular to the surface to be applied 11 under the drive of the second moving component 43, so as to adjust the distance between the application surface 411 and the surface to be applied 11, thereby controlling the thickness of the thermal grease applied to the surface to be applied 11.

[0051] It is worth noting that the first direction mentioned in this application can be... Figure 1 The X-axis direction shown can also be understood as the horizontal direction. Correspondingly, the second direction perpendicular to the first direction can be... Figure 1 The Z-axis direction shown can also be understood as the vertical direction.

[0052] In order to enable the application surface 411 of the application head 41 to reciprocate in both the first direction and the second direction, the first moving component 42 and the second moving component 43 can be constructed in the manner described below.

[0053] like Figure 5 As shown, the first moving component 42 can be a linear motor capable of outputting reciprocating linear motion along a first direction, and the linear motor can be directly arranged on the base 20. The second moving component 43 is disposed at the output end of the first moving component 42, so that the second moving component 43 can perform reciprocating linear motion along the first direction under the action of the first moving component 42.

[0054] At this time, the applicator head 41 is mounted on the second moving component 43 so that the applicator head 41 can follow the second moving component 43 to perform reciprocating linear motion along the first direction. At the same time, the second moving component 43 is used to drive the applicator surface 411 of the applicator head 41 to perform reciprocating linear motion along the second direction.

[0055] Furthermore, such as Figure 6As shown, the second moving component 43 may include a moving base 431, which is connected to the output end of the first moving component 42, so that the first moving component 42 can drive the moving base 431 to reciprocate along a first direction. Simultaneously, the moving base 431 is provided with a moving surface 4311, which forms an angle with the horizontal plane. Preferably, the angle between the moving surface 4311 and the horizontal plane is an acute angle, such as 10°, 30°, or 45°, to optimize the structural design of the second moving component 43.

[0056] Meanwhile, the second moving component 43 also includes a moving lead screw 432 and a moving drive motor 433. The moving lead screw 432 is rotatably mounted on the moving base 431, and its axial direction is parallel to the moving surface 4311. The output end of the moving drive motor 433 is connected to the moving lead screw 432 to drive it to rotate, thus enabling the moving lead screw 432 to output rotational motion around its own axis. At this time, the applicator head 41 engages with the moving lead screw 432 to convert the rotational motion output by the moving lead screw 432 into linear motion of the applicator head 41 along the axial direction of the moving lead screw 432.

[0057] It is understandable that the driving engagement between the applicator head 41 and the movable lead screw 432 can specifically be as follows: a lead screw nut seat 434 is coaxially provided on the outer wall of the movable lead screw 432, the movable lead screw 432 and the lead screw nut seat 434 are threadedly connected, and the lead screw nut seat 434 can slide with the movable surface 4311 by means of a guide rail 435 provided on the movable surface 4311, and the guide rail 435 on the movable surface 4311 extends parallel to the movable surface 4311, and the applicator head 41 can be connected to the lead screw nut seat 434.

[0058] Thus, when the movable drive motor 433 drives the movable lead screw 432 to rotate, based on the principle of threaded transmission, the lead screw nut seat 434 can move linearly along the axial direction of the movable lead screw 432. This, in turn, drives the application head 41 to move synchronously, thereby changing the distance between the application surface 411 and the surface 11 to be applied by the movement of the application head 41 along the movable surface 4311. For example, assuming the angle between the movable surface 4311 and the horizontal plane is 30°, when the lead screw nut seat 434 drives the application head 41 to move 0.1mm along the axial direction of the movable lead screw 432, the application surface 411 of the application head 41 will move 0.05mm in the second direction. Furthermore, the movable drive motor 433 can be a servo motor with a brake, so that once the position of the application head 41 is determined, the movable drive motor 433 can self-lock to lock the position of the application head 41.

[0059] It is worth noting that by using a lead screw drive mechanism to drive the application head 41, compared to linear drive devices such as cylinders and electric actuators, the position of the application head 41 can be precisely controlled, which helps to accurately control the distance between the application surface 411 and the surface 11 to be applied. More importantly, since the thickness of the thermal grease applied to the workpiece 10 waiting to be applied on the semiconductor cooling wafer is generally in the micrometer range, such as tens or hundreds of micrometers, adjusting the position of the application surface 411 by moving the application head 41 along a moving surface 4311 with an angle to the horizontal plane is more conducive to adjusting the position of the application head 41 within the micrometer range than arranging the moving lead screw 432 along the second direction (i.e., vertically). This further improves the accuracy of controlling the position of the application head 41, thus providing a more reliable guarantee for accurately controlling the distance between the application surface 411 and the surface 11 to be applied.

[0060] Based on this, the inventors of this application further discovered that whether thermal grease can be applied to the surface 11 to be coated with a predetermined thickness depends on whether the distance between the coating surface 411 and the surface 11 to be coated conforms to the predetermined distance. Only when the distance between the coating surface 411 and the surface 11 to be coated is precisely controlled can the thermal grease be applied to the surface 11 to be coated with a predetermined thickness. Furthermore, in order to precisely control the distance between the coating surface 411 and the surface 11 to be coated, it is necessary to accurately position the initial position of the coating surface 411 (that is, the position of the coating surface 411 when it comes into contact with the surface 11 to be coated), so as to use the initial position of the coating surface 411 as the starting point for adjusting the position of the coating surface 411, thereby achieving precise adjustment of the distance between the coating surface 411 and the surface 11 to be coated.

[0061] Therefore, embodiments of this application further improve the construction of the support mechanism 30 in order to more accurately position the initial position of the coating surface 411.

[0062] Specifically, such as Figure 4 As shown, the carrier mechanism 30 also includes a trigger 32, which is configured to be triggered by the carrier stage 31 to emit a trigger signal after the coating surface 411 comes into contact with the surface to be coated 11. In other words, the trigger 32 can only be triggered by the carrier stage 31 to emit a trigger signal after the coating surface 411 comes into contact with the surface to be coated 11. Conversely, if the coating surface 411 does not come into contact with the surface to be coated 11, the trigger 32 will not be triggered by the carrier stage 31 and will not emit a trigger signal.

[0063] Therefore, when it is necessary to position the initial position of the coating surface 411, the coating head 41 first moves the coating surface 411 along the second direction towards the coating surface 11 of the workpiece 10 to be coated, which is positioned on the support platform 31. During this process, if the trigger 32 does not issue a trigger signal, it means that the coating surface 411 is not in contact with the coating surface 11; correspondingly, if the trigger 32 issues a trigger signal, it means that the coating surface 411 has already contacted the coating surface 11, and the position of the coating surface 411 at this time can be used as the initial position of the coating surface 411. After the initial position of the coating surface 411 is positioned, the second moving component 43 can be used to drive the coating head 41 to move in the opposite direction, so that the coating surface 411 moves away from the coating surface 11 along the second direction, thereby adjusting the distance between the coating surface 411 and the coating surface 11 according to the required thickness of the thermal grease.

[0064] This can be achieved by the following method: after the coating surface 411 comes into contact with the surface to be coated 11, the triggering element 32 is triggered by the support platform 31 to send a trigger signal.

[0065] Combination Figure 3 and Figure 4 As shown, the trigger element 32 is located below the support platform 31. The trigger element 32 can be a trigger switch capable of emitting a trigger signal, such as a pressure switch or a capacitive switch, and it can be located on the base 20 directly below the support platform 31.

[0066] At this time, the supporting mechanism 30 may also include an elastic element 33 and a positioning element 34. The elastic element 33 is used to elastically hold the supporting platform 31 above the trigger element 32. The elastic element 33 may be a spring located at the bottom of the supporting platform 31, which applies a spring force to the supporting platform 31 to separate it from the trigger element 32, thus elastically holding the supporting platform 31 above the trigger element 32. It is understood that, to make the spring force on the supporting platform 31 more uniform, multiple springs arranged in a rectangular array can be provided at the bottom of the supporting platform 31. For example, the accompanying drawings of this application show a case where four springs are provided at the bottom of the supporting platform 31, and the four springs are arranged in a rectangular array at the four corners of the supporting platform 31.

[0067] The positioning element 34 can respond to the trigger signal issued by the triggering element 32 to position the carrier platform 31 at the position where the triggering element 32 is triggered. That is, after the carrier platform 31 triggers the triggering element 32 to issue a trigger signal, the positioning element 34 can respond to the trigger signal to position the carrier platform 31 and prevent the carrier platform 31 from moving.

[0068] Thus, before the coating surface 411 contacts the surface to be coated 11, the support platform 31, together with the workpiece 10 to be coated, is elastically held above the triggering element 32 under the action of the elastic element 33. At this time, the support platform 31 does not trigger the triggering element 32, and the triggering element 32 does not send a trigger signal. Correspondingly, when the coating surface 411 approaches the surface to be coated 11 along the second direction and contacts the surface to be coated 11, the coating surface 411 can apply downward pressure to the surface to be coated 11. Under the action of this pressure, the support platform 31 and the workpiece 10 to be coated will move downward synchronously. During this process, the elastic element 33... The pressure is used to store an elastic force, and the coating surface 411 remains in contact with the surface to be coated 11 to continuously apply downward pressure to the surface to be coated 11 until the support platform 31 moves to contact the trigger member 32 and triggers the trigger member 32. The trigger member 32 sends a trigger signal. At this time, the positioning member 34 responds to the trigger signal sent by the trigger member 32 and positions the support platform 31. At the same time, the second moving component 43 used to drive the coating surface 411 to move can also respond to the trigger signal and stop driving the coating surface 411 to move, thereby realizing the initial position positioning of the coating surface 411.

[0069] After the initial position of the coating surface 411 is determined, the second moving component 43 drives the coating surface 411 away from the surface to be coated 11 along the second direction to adjust the distance between the coating surface 411 and the surface to be coated 11. During this process, since the position of the support platform 31 is positioned by the positioning member 34, the elastic member 33 cannot release the pre-stored elastic force, and the support platform 31 cannot move. After the distance between the coating surface 411 and the surface to be coated 11 is adjusted, the application of thermal grease can begin. After a single application operation is completed, the positioning member 34 is first released from positioning the support platform 31, and then the elastic member 33 releases the pre-stored elastic force to force the support platform 31 to move upward, so that the support platform 31 separates from the trigger member 32, thereby preparing for the initial positioning of the coating surface 411 for the next application of thermal grease.

[0070] As can be seen, by employing the combination of trigger 32, elastic element 33 and positioning element 34, this application can not only achieve the initial positioning of the coating surface 411, but also help to simplify the structure of the bearing mechanism 30.

[0071] Furthermore, the support platform 31 can be made of a material suitable for magnetic attraction, such as iron. In this case, the positioning element 34 can be an electromagnet disposed below the support platform 31, for example, the electromagnet can be disposed on the base 20, and the electromagnet can be energized in response to the trigger signal issued by the trigger element 32. In other words, the trigger signal issued by the trigger element 32 can be used as a control signal to control the energization of the electromagnet. Thus, before the support platform 31 triggers the trigger element 32, the trigger element 32 does not issue a trigger signal, and the electromagnet is always in an unenergized state. Correspondingly, when the support platform 31 triggers the trigger element 32, so that the trigger element 32 issues a trigger signal, the support platform 31 simultaneously comes into contact with the electromagnet. At this time, the electromagnet is energized in response to the trigger signal, thereby using the magnetic force generated by the electromagnet to attract and fix the support platform 31 at the position when the trigger element 32 is triggered, thereby realizing the positioning of the support platform 31. After a single application operation is completed, simply de-energize the electromagnet to release the pre-stored elastic force of the elastic element 33, thereby forcing the support platform 31 to separate from the trigger element 32, thus preparing for the initial positioning of the application surface 411 when applying thermal grease again.

[0072] It is foreseeable that using an electromagnet as the positioning element 34 can simplify the process of positioning the support platform 31 as much as possible, and further simplify the structure of the support mechanism 30. It is understood that, in order to make the magnetic force acting on the support platform 31 more uniform, multiple electromagnets arranged in a rectangular array can be provided at the bottom of the support platform 31. For example, the accompanying drawings of this application show a case where four electromagnets are provided at the bottom of the support platform 31, and the four electromagnets are arranged in a rectangular array at the four corners of the support platform 31. Further, referring to... Figure 3 and Figure 4 As shown, the electromagnet can have a cylindrical shape so that a single spring, which is an elastic element 33, can be sleeved on the outer wall of the single electromagnet, thereby making the structure of the bearing mechanism 30 more compact. At this time, one end of the spring is connected to the bottom of the bearing platform 31, and the other end of the spring can be connected to the base 20.

[0073] Furthermore, in order to improve the stability of the support platform 31 when it moves closer to or away from the trigger 32 along the second direction, such as Figure 4As shown, the supporting mechanism 30 may further include guide posts 35 for limiting and guiding the supporting platform 31. One end of the guide post 35 can be fixed to the base 20, and the other end of the guide post 35 extends along the second direction and passes through the supporting platform 31, with the guide post 35 and the supporting platform 31 in a sliding fit. Furthermore, multiple guide posts 35 can be provided, and the multiple guide posts 35 are also distributed in a rectangular array. Preferably, the guide post 35, the spring, and the electromagnet can correspond one-to-one, and each guide post 35, spring, and electromagnet is coaxially arranged. The end of each guide post 35 near the base 20 can be directly connected to the top of the electromagnet, while the spring is sleeved on the outer wall of the electromagnet, further optimizing the structural design of the supporting mechanism 30.

[0074] In the embodiments of this application, in order to ensure that the surface 11 of the workpiece 10 to be coated has thermally conductive silicone grease, so as to facilitate the application of the thermally conductive silicone grease to the surface 11 by the coating mechanism 40, as follows: Figure 1 As shown, the automatic application device may also include a feeding mechanism 50. The feeding mechanism 50 is configured to provide thermal grease to the surface 11 to be applied.

[0075] Furthermore, in combination Figure 7 As shown, the feeding mechanism 50 may include a storage cylinder 51, a piston 52, and a drive assembly 53. The storage cylinder 51 is fixedly mounted on the base 20 by means of a bracket 54. The interior of the storage cylinder 51 defines a storage cavity (not shown) suitable for storing thermal grease, and the storage cavity has a discharge port (not shown). The discharge port is connected to a discharge pipe 55, and the discharge end of the discharge pipe 55 (i.e., the end of the discharge pipe 55 away from the discharge port) points towards the surface 11 of the workpiece 10 to be coated. For example, the discharge end of the discharge pipe 55 can be positioned directly above the surface 11 of the workpiece 10 to be coated. It should be noted that, since thermal grease is a viscous material, even if the thermal grease flowing from the discharge end of the discharge pipe 55 falls onto the surface 11 to be coated in a manner substantially perpendicular to it, thermal grease splattering will not occur.

[0076] Piston 52 is disposed within the storage chamber of storage cylinder 51, and piston 52 is configured to reciprocate within the storage chamber, moving towards or away from the discharge port. Drive assembly 53 is used to drive piston 52.

[0077] Thus, when thermal grease needs to be added to the surface 11 to be coated, the driving component 53 simply drives the piston 52 close to the outlet. The piston 52's squeezing action forces the thermal grease in the storage chamber from the outlet into the outlet pipe 55, allowing the thermal grease to flow out from the outlet end of the outlet pipe 55 and fall onto the surface 11 to be coated. It is understood that the end of the storage cylinder 51 furthest from the outlet can be designed as an open structure, and the piston 52 can be moved out of the storage chamber through the opening of the storage cylinder 51. This facilitates the removal of the piston 52 to add new thermal grease after the thermal grease in the storage chamber has been used up.

[0078] Furthermore, the drive assembly 53 may include a feeding motor 531, a feeding screw 532, a feeding slide 533, and a pusher column 534. The feeding screw 532 is rotatably mounted on the bracket 54, and its axial direction is parallel to the movement direction of the piston 52. The feeding motor 531 drives the feeding screw 532 to rotate. The feeding slide 533 is slidably mounted on the bracket 54 and is threadedly engaged with the feeding screw 532. One end of the pusher column 534 is connected to the feeding slide 533, and the other end is connected to the piston 52.

[0079] Thus, when the feeding motor 531 drives the feeding screw 532 to rotate, the feeding slide 533 can move along the axial direction of the feeding screw 532, thereby driving the piston 52 to move in the storage chamber of the storage cylinder 51 through the feeding slide 533, so as to squeeze the thermal grease out of the storage chamber.

[0080] In the embodiments of this application, in order to facilitate positioning the workpiece 10 to be coated on the support platform 31, such as... Figure 4 As shown, the support platform 31 is provided with a positioning groove 311 adapted to the workpiece 10 to be coated. The workpiece 10 to be coated can be snapped into the positioning groove 311 to achieve positioning. It should be noted that the support platform 31 in this embodiment can be a replaceable component, allowing for the replacement of the support platform 31 with a positioning groove 311 adapted to the workpiece 10 when dealing with workpieces 10 of different sizes.

[0081] Furthermore, a material collection groove 312 extending along the first direction can also be provided on the support platform 31. The material collection groove 312 is connected to the positioning groove 311. When the workpiece 10 to be coated is positioned in the positioning groove 311, refer to Figure 3As shown, the surface 11 of the workpiece 10 to be coated is not lower than the bottom surface of the collection tank 312. Thus, when the coating head 41 and its coating surface 411 of the coating mechanism 40 reciprocate along the first direction to apply thermal grease to the surface 11, the excess thermal grease scraped off by the coating surface 411 can be temporarily stored in the collection tank 312 for subsequent centralized processing of the scraped thermal grease.

[0082] Furthermore, one end of the collecting trough 312 is open, and the positioning groove 311 can be positioned near the opening of the collecting trough 312. At this point, combined with... Figure 1 or Figure 2 As shown, the automatic coating device may also include a collection chamber 60 disposed on the base 20 and open at the top. The collection chamber 60 is located on the movement path of the coating surface 411 when it moves in the first direction, and the collection chamber 60 is adjacent to the opening of the material collection tank 312.

[0083] Understandably, by making one end of the collecting tank 312 open and adding a collecting cavity 60 at the opening of the collecting tank 312, when applying thermal grease, if the workpiece 10 to be coated is located in such a position... Figure 1 The application head 41 and the collection chamber 60 are shown. When the application head 41 moves in the direction of the collection chamber 60 along the first direction, the excess thermal grease pushed out by the application surface 411 can flow into the collection chamber 60 through the opening of the collection tank 312 and be collected.

[0084] At the same time, continue to refer to Figure 1 or Figure 2 Furthermore, multiple scrapers 61 arranged sequentially along the first direction can be provided in the collection cavity 60, and gaps suitable for storing thermal grease are reserved between the multiple scrapers 61. When the applicator head 41 and its applicator surface 411 move along the first direction to the top of the collection cavity 60 and reach the position of the scraper 61, the applicator surface 411 of the applicator head 41 can be brought into contact with the scraper 61 first, and then the thermal grease remaining on the applicator surface 411 can be scraped off by the scraper 61 by moving the applicator surface 411 along the first direction, so as to clean the residual thermal grease on the applicator surface 411.

[0085] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An automatic application device for thermal grease, characterized in that, include: The support mechanism includes a support platform suitable for positioning the workpiece to be coated; The workpiece to be coated has a surface to be coated. Application mechanism, including application head; The applicator head has an applicator surface parallel to the surface to be applicated, the applicator surface being located above and opposite the surface to be applicated; The coating surface is configured to reciprocate linearly along a first direction parallel to the surface to be coated and a second direction perpendicular to the surface to be coated; The carrier mechanism further includes a trigger element, which is configured to be triggered by the carrier platform to emit a trigger signal after the coating surface comes into contact with the surface to be coated. The trigger element is located below the support platform; the support mechanism further includes: An elastic element is used to elastically hold the support platform above the trigger element; A positioning element, which is responsive to the trigger signal emitted by the triggering element to position the carrier platform at the position that triggers the triggering element; The applicator further includes a first moving component and a second moving component, wherein the first moving component is configured to output reciprocating linear motion along the first direction; The second moving component includes: A movable base defines a movable surface that forms an angle with the horizontal plane; the movable base is connected to the output end of the first movable component; A movable lead screw is rotatably mounted on the movable seat to output rotational motion about its own axis; the axis of the movable lead screw is parallel to the movable surface, and the applicator head is driven to cooperate with the movable lead screw to convert the rotational motion output by the movable lead screw into linear motion of itself along the axis of the movable lead screw; The angle between the moving surface and the horizontal plane is an acute angle.

2. The automatic application device for thermal conductive silicone grease according to claim 1, characterized in that, The support platform is made of a material suitable for being attracted by magnetic force, and the positioning element is an electromagnet located below the support platform; When the support platform triggers the triggering element to emit the triggering signal, the support platform comes into contact with the electromagnet, and the electromagnet is energized in response to the triggering signal.

3. The automatic application device for thermal conductive silicone grease according to claim 1, characterized in that, The bearing mechanism further includes a guide post, one end of which is fixed, and the other end of which extends along the second direction and passes through the bearing platform, with the guide post and the bearing platform slidingly engaged.

4. The automatic application device for thermal conductive silicone grease according to claim 1, characterized in that, The support platform is provided with a positioning groove that is adapted to the workpiece to be coated, and the workpiece to be coated can be snapped into the positioning groove in a snap-fit ​​manner.

5. The automatic application device for thermal conductive silicone grease according to claim 4, characterized in that, The support platform is provided with a material collection trough extending along the first direction, and the material collection trough is connected to the positioning trough; When the workpiece to be coated is positioned in the positioning groove, the surface to be coated is not lower than the bottom surface of the material collection groove.

6. The automatic application device for thermal conductive silicone grease according to claim 5, characterized in that, One end of the collection trough is an open structure, and the positioning groove is located near the opening of the collection trough. It also includes a top-open collection chamber located on the movement path of the coating surface as it moves along the first direction. The collection chamber is adjacent to the opening of the material collection trough and is equipped with a scraper inside the collection chamber.

7. The automatic application device for thermal conductive silicone grease according to claim 1, characterized in that, It also includes a feeding mechanism configured to provide thermal grease to the surface to be coated.

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