Smearing device and smearing equipment

Abstract

The smearing device comprises a mounting base and a cover plate assembly, a containing groove is formed in the bottom face of the mounting base, the containing groove is used for containing paint, and the bottom face of the mounting base is used for being attached to the top face of a part to be smeared; the cover plate assembly comprises a first cover plate, and the first cover plate can seal or expose a groove opening of the containing groove. All needed paint is placed in the containing groove, the first cover plate is placed on the smearing area, the first cover plate is pulled away, the paint flows into the smearing area from the containing groove, and then the paint is evenly distributed in the smearing area as much as possible in the mode that the top face of the base body is pressed and slides on the top face of the base body. Therefore, the coating process of the coating is simplified.

Description

Technical Field

[0001] The present invention relates to the technical field of chip heat dissipation, and particularly relates to a coating device and a coating equipment. Background Art

[0002] With the development of electronic devices towards miniaturization, integration, and high frequency, the power consumption of electronic components has been continuously increasing, resulting in an increase in the temperature of electronic components. Excessive temperature will reduce the service life of electronic components or even cause failure. In order to efficiently dissipate the heat generated by electronic chips, thermal interface materials are usually used to fill the heat exchange interface between the electronic chip and the radiator to reduce the contact thermal resistance between the electronic chip and the radiator.

[0003] Currently, the commonly used thermal interface materials are thermal conductive silicone grease, thermal conductive gaskets, etc., but their thermal conductivity is low and cannot meet the heat dissipation requirements of electronic components under high power. The thermal conductivity of liquid metal is ten times or even dozens of times that of traditional thermal interface materials, and it can efficiently complete the heat transfer between the chip and the radiator.

[0004] However, liquid metal also has the characteristics of fluidity and conductivity. If it leaks due to improper sealing on the core board, it will cause short circuits of other electronic components. At the same time, the wettability between liquid metal and the surface material of the chip is poor. Currently, the coating method of liquid metal is complex, and it needs to be coated multiple times with a rolling brush to complete the coating of a specified amount of liquid metal.

[0005] In view of this, it is necessary to provide a new coating device and coating equipment to solve or at least alleviate the above technical defects. Summary of the Invention

[0006] The main object of the present invention is to provide a coating device and a coating equipment, aiming to solve the technical problem of the complex existing liquid metal coating process.

[0007] To achieve the above object, the present invention provides a coating device for coating a coating on a coating area, the coating device comprising:

[0008] A mounting seat, a receiving groove is formed on the bottom surface of the mounting seat for receiving the coating, and the bottom surface of the mounting seat is used for fitting with the top surface of the workpiece to be coated;

[0009] A cover plate assembly, the cover plate assembly includes a first cover plate, and the first cover plate can seal or expose the opening of the receiving groove.

[0010] In one embodiment, the coating device further includes a dust removal sticker, the dust removal sticker is disposed on the side of the first cover plate away from the receiving groove, and the dust removal sticker is used for adhering foreign matters on the surface of the workpiece to be coated.

[0011] In one embodiment, the bottom surface of the first cover plate can be attached to the top surface of the dust removal sticker, and the side of the dust removal sticker facing away from the first cover plate is used to be attached to the coating area.

[0012] In one embodiment, the mounting base includes a base body and a mounting table assembly connected to each other. The bottom surface of the base body is provided with the receiving groove. The bottom surface of the base body is used to be attached to the top surface of the workpiece to be coated. The cover plate assembly is provided with a first through hole for sliding cooperation with the first cover plate and a second through hole for sliding cooperation with the dust removal sticker.

[0013] In one embodiment, the bottom wall of the first through hole is attached to the bottom surface of the first cover plate, the top wall of the second through hole is attached to the top surface of the dust removal sticker, the bottom surface of the first cover plate and the top wall of the second through hole are arranged in the same plane, and the bottom wall of the first through hole and the top surface of the dust removal sticker are arranged in the same plane, so that the bottom surface of the first cover plate can be attached to the top surface of the dust removal sticker.

[0014] In one embodiment, the top wall of the first through hole is flush with the bottom surface of the base body, so that the top surface of the first cover plate can be attached to the bottom surface of the base body.

[0015] In one embodiment, the mounting table assembly includes a first mounting table and a second mounting table. The first mounting table and the second mounting table are arranged opposite to each other along a first direction on both sides of the receiving groove. The first mounting table is provided with the first through hole, and the second mounting table is provided with the second through hole.

[0016] In one embodiment, the bottom wall of the receiving groove is provided with an exhaust hole.

[0017] In one embodiment, a groove is provided on the top surface of the mounting base. The exhaust hole penetrates the bottom wall of the groove. The cover plate assembly further includes a second cover plate, and the second cover plate is used to block or expose the exhaust hole.

[0018] In one embodiment, a communication hole communicating with the groove is provided on the side wall of the mounting base. The bottom wall of the communication hole and the bottom wall of the groove are arranged in the same plane. The second cover plate is in sliding cooperation with the communication hole, and the bottom surface of the second cover plate can be attached to the bottom wall of the groove, so that the second cover plate can block or expose the exhaust hole.

[0019] In one embodiment, the coating device further includes a squeegee, and the squeegee is used to apply the coating on the coating area through the bottom wall of the groove.

[0020] In one embodiment, the mounting base is provided with a placement groove, and the placement groove is used to store the squeegee.

[0021] In one embodiment, the mounting base is made of a transparent material; and / or, the mounting base is made of an elastic material.

[0022] In one embodiment, a plurality of positioning platforms are provided on the bottom surface of the mounting base, and the plurality of positioning platforms are used to position the workpiece to be coated.

[0023] In addition, the present invention also provides a coating device, the coating device includes a workpiece to be coated and the above-mentioned coating device, the workpiece to be coated includes a chip, and the coating includes liquid metal.

[0024] In the above technical solution of the present invention, the mounting base is flipped so that the notch of the receiving groove faces upward, the coating is placed in the receiving groove, and then the notch of the receiving groove is sealed by the first cover plate so that the coating in the receiving groove is in a closed space. Then, the mounting base is flipped again so that the notch of the receiving groove faces downward, the first cover plate is placed on the coating area, the first cover plate is removed, and then the mounting base is pressed down so that the bottom surface of the mounting base fits against the top surface of the workpiece to be coated. The coating flows from the receiving groove into the coating area, and then by pressing the top surface of the mounting base located above the receiving groove and sliding on the top surface of the mounting base, the area where the bottom wall of the receiving groove undergoes elastic deformation changes, so that the bottom wall of the receiving groove drives the coating to move in the coating area, so that the coating is distributed as evenly as possible in the coating area. The coating can include liquid metal. Since the coating device can move all the specified amount of liquid metal to the coating area at one time, the process of repeatedly moving the liquid metal by the existing roller brush is simplified; and, by pressing the top surface of the mounting base located above the receiving groove and moving the pressing position, the liquid metal is evenly spread out. Compared with the existing roller brush repeatedly applying the liquid metal multiple times, the coating process of the liquid metal is further simplified. Description of the Drawings

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0026] Figure 1 It is a schematic structural diagram of a coating device according to an embodiment of the present invention;

[0027] Figure 2 It is a schematic structural diagram of the coating device according to an embodiment of the present invention from another perspective;

[0028] Figure 3 It is an exploded structural diagram of the coating device according to an embodiment of the present invention;

[0029] Figure 4Exploded structural schematic diagram of another perspective of the coating device according to an embodiment of the present invention;

[0030] Figure 5 Partial structural schematic diagram of the coating equipment according to an embodiment of the present invention;

[0031] Figure 6 Cross-sectional structural schematic diagram of the coating equipment according to an embodiment of the present invention;

[0032] Figure 7 It is Figure 6 Partial enlarged schematic diagram at A;

[0033] Figure 8 It is Figure 6 Partial enlarged schematic diagram at B;

[0034] Figure 9 It is Figure 6 Partial enlarged schematic diagram at C.

[0035] Explanation of the reference numerals in the drawings:

[0036] 1 Coating device 11 Mounting base 111 Base body 1111 Bottom surface of the base body 1112 Top surface of the base body 1113 Receiving groove 1114 Bottom wall of the receiving groove 1115 Exhaust hole 1116 Groove 11161 Communication hole 11162 Bottom wall of the groove 1117 Placement groove 1118 Direction mark 112 Mounting table assembly 1121 First mounting table 11211 First through hole 11212 Top wall of the first through hole 11213 Bottom wall of the first through hole 1122 Second mounting table 11221 Second through hole 11222 Top wall of the second through hole 113 Positioning table 1131 Support step 12 Cover plate assembly 121 First cover plate 1211 First plate body 1212 First handle part 1213 Top surface of the first cover plate 1214 Bottom surface of the first cover plate 1215 First mark 122 Second cover plate 1221 Second plate body 1222 Second handle part 1223 Bottom surface of the second cover plate 1224 Second mark 13 Dust removal sticker 131 Pulling part 132 Dust removal part 133 Top surface of the dust removal sticker 134 Bottom surface of the dust removal sticker 135 Pulling mark 14 Scraper 2 Coating equipment 21 Workpiece to be coated 21a Chip 212 Coating area

[0037] The realization of the object of the present invention, functional characteristics and advantages will be further described in conjunction with the embodiments with reference to the accompanying drawings. Specific embodiments

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0039] It should be noted that all the directional indications (such as up, down, left, right) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (such as shown in the attached Figure 1 drawing). If the specific posture changes, the directional indications will also change accordingly.

[0040] In addition, in the present invention, descriptions such as "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" can explicitly or implicitly include at least one such feature.

[0041] Moreover, the technical solutions between various embodiments of the present invention can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0042] The present invention provides a coating device 1. In one embodiment, as Figures 1 to 9 shown, the coating device 1 is used to coat a coating (not shown in the figure) within a coating area 212 of a workpiece 21 to be coated. The coating device 1 includes a mounting base 11 and a cover plate assembly 12. A receiving groove 1113 is formed in the bottom surface of the mounting base 11 for receiving the coating, and the bottom surface of the mounting base 11 is used to fit against the top surface of the workpiece 21 to be coated; the cover plate assembly 12 includes a first cover plate 121, and the first cover plate 121 can seal or expose the opening of the receiving groove 1113.

[0043] Among them, the flipping mounting base 11 is flipped so that the notch of the receiving groove 1113 faces upward, the coating material is placed in the receiving groove 1113, and then the first cover plate 121 is pushed to seal the notch of the receiving groove 1113, so that the coating material in the receiving groove 1113 is in a closed space, thereby preventing the coating material from leaking and oxidizing during the movement of the mobile coating device 1; the mounting base 11 is flipped again so that the notch of the receiving groove 1113 faces downward, the first cover plate 121 is placed on the coating area 212, the first cover plate 121 is removed, and then the mounting base 11 is pressed down so that the bottom surface of the mounting base 11 fits against the top surface of the workpiece to be coated 21. The top surface of the workpiece to be coated 21 can seal the notch of the receiving groove 1113 to prevent the liquid metal from leaking outside the mounting base 11. Since a small amount of air will inevitably enter the receiving groove 1113 during the process of removing the first cover plate 121, the coating material can flow from the receiving groove 1113 into the coating area 212. Then, by pressing the top surface of the mounting base 11 located above the receiving groove 1113 and sliding on the top surface of the mounting base 11, the area where the bottom wall 1114 of the receiving groove undergoes elastic deformation changes. Thus, the bottom wall 1114 of the receiving groove drives the coating material to move in the coating area 212, so that the coating material is distributed as evenly as possible in the coating area 212. The coating material can include liquid metal, and the workpiece to be coated 21 can include a chip 21a. Since the coating device 1 can move all the specified amount of liquid metal to the coating area 212 at one time, the process of repeatedly moving the liquid metal by the existing roller brush is simplified; moreover, by pressing the top surface of the mounting base 11 located above the receiving groove 1113 and moving the pressing position, the liquid metal is laid flat evenly. Compared with the existing roller brush that repeatedly applies the liquid metal many times, the coating process of the liquid metal is further simplified, and the coating device 1 has a simple structure and is convenient for processing and manufacturing. It should be noted that if the acting area of the force acting on the top surface of the mounting base 11 extends along the width direction of the receiving groove 1113, the moving direction of the acting force extends along the length direction of the receiving groove 1113. The acting force starts to move from one of the two groove walls of the receiving groove 1113 that are oppositely arranged along its length direction, and then moves to the position where the other groove wall is located, so as to apply the liquid metal as evenly as possible in the coating area 212. It should also be noted that the coating area 212 can be the entire top surface of the chip 21a or a partial area of the top surface of the chip 21a, which is not limited herein.

[0044] In one embodiment, the coating device 1 further includes a dust removal sticker 13 disposed on a side of the first cover plate 121 away from the receiving groove 1113. The dust removal sticker 13 is used to adhere to foreign matters on the surface of the workpiece to be coated 21. By providing the dust removal sticker 13 to remove dust and foreign matters on the surface of the chip 21a, if there are foreign matters, part of the heat generated by the chip 21a will first be transferred to the foreign matters and then from the foreign matters to the liquid metal, thereby reducing the heat transfer efficiency. Therefore, before applying the liquid metal to the coating area 212, the foreign matters and dust on the surface of the chip 21a are removed by the dust removal sticker 13 first.

[0045] In one embodiment, the mounting base 11 includes a base body 111 and a mounting table assembly 112 connected to each other. A receiving groove 1113 is formed in the bottom surface 1111 of the base body. The bottom surface 1111 of the base body is used to fit with the top surface of the workpiece to be coated 21. The cover plate assembly 12 is provided with a first through hole 11211 for slidingly cooperating with the first cover plate 121 and a second through hole 11221 for slidingly cooperating with the dust removal sticker 13. The first through hole 11211 guides the first cover plate 121 so that the first cover plate 121 can move smoothly along a determined direction. Similarly, the second through hole 11221 guides the dust removal sticker 13 so that the dust removal sticker 13 can move smoothly along a determined direction. And the first through hole 11211 also plays a certain limiting role on the first cover plate 121, that is, it restricts the downward movement of the first cover plate 121, thereby ensuring the reliability of the sealing of the notch of the receiving groove 1113 by the first cover plate 121. The second through hole 11221 also plays a certain limiting role on the dust removal sticker 13 to restrict the downward movement of the dust removal sticker 13, thereby ensuring the reliability of the fitting of the dust removal sticker 13 with the first cover plate 121.

[0046] In one embodiment, the bottom surface 1214 of the first cover plate can be used to fit with the top surface 133 of the dust removal sticker. The side of the dust removal sticker 13 facing away from the first cover plate 121 is used to fit with the coating area 212. Among them, the bottom surface 1214 of the first cover plate fits with the top surface 133 of the dust removal sticker, thereby avoiding the influence of the air existing between the first cover plate 121 and the dust removal sticker 13 on the uniform coating of the liquid metal, and effectively reducing the probability of generating bubbles during the coating process. The bottom surface 134 of the dust removal sticker is used to fit with the coating area 212, so as to better remove the dust and foreign matters in the coating area 212. It should be noted that since the top surface 133 of the dust removal sticker fits with the bottom surface 1214 of the first cover plate, when the dust removal sticker 13 is pulled out, the dust and foreign matters on the bottom surface 1214 of the first cover plate can also be removed.

[0047] In one embodiment, the bottom wall 11213 of the first through-hole is in contact with the bottom surface 1214 of the first cover plate, the top wall 11222 of the second through-hole is in contact with the top surface 133 of the dust removal sticker, the bottom surface 1214 of the first cover plate and the top wall 11222 of the second through-hole are coplanar, and the bottom wall 11213 of the first through-hole and the top surface 133 of the dust removal sticker are coplanar, so that the bottom surface 1214 of the first cover plate can be in contact with the top surface 133 of the dust removal sticker. Wherein, the first cover plate 121 slides along the axial direction of the first through-hole 11211, and the dust removal sticker 13 slides along the axial direction of the second through-hole 11221. Since the bottom surface 1214 of the first cover plate is in contact with the bottom wall 11213 of the first through-hole, and the top surface 133 of the dust removal sticker is in contact with the top wall 11222 of the second through-hole, in order to ensure that the bottom surface 1214 of the first cover plate can be in contact with the top surface 133 of the dust removal sticker, it is necessary to set the bottom surface 1214 of the first cover plate and the top wall 11222 of the second through-hole to be coplanar, and the bottom wall 11213 of the first through-hole and the top surface 133 of the dust removal sticker to be coplanar. It should be noted that the first through-hole 11211 and the second through-hole 11221 are respectively arranged on two different mounting platforms, and the two mounting platforms can be arranged at intervals relative to each other in a certain direction, or the extending directions of the two mounting platforms are perpendicular to each other.

[0048] According to an embodiment of the present invention, the cover plate assembly 12 is further provided with an opening for communicating with the first through-hole 11211 or the second through-hole 11221. Taking the opening communicating with the first through-hole 11211 as an example, the first opening communicates with the first through-hole 11211, so that the first cover plate 121 can be separated from the first through-hole 11211 from the first opening, so that the first cover plate 121 does not have to move along the axial direction of the first through-hole 11211 to be separated from the first through-hole 11211. The first cover plate 121 can be divided into a first body and a second body. The first body is used for sliding cooperation with the first through-hole 11211. Since the first cover plate 121 does not have to move along the axial direction of the first through-hole 11211 to be separated from the first through-hole 11211, the thickness of the second body can be greater than the thickness of the first body, so that even if the bottom wall 11213 of the first through-hole is not coplanar with the top surface 133 of the dust removal sticker, the bottom wall of the second body can be made to be in contact with the top surface 133 of the dust removal sticker by increasing the thickness of the second body; when the opening communicates with the second through-hole 11221, the principle is similar and will not be elaborated here one by one.

[0049] In one embodiment, the mounting platform assembly 112 includes a first mounting platform 1121 and a second mounting platform 1122. The first mounting platform 1121 and the second mounting platform 1122 are oppositely arranged on both sides of the receiving groove 1113 in the first direction. The first mounting platform 1121 is provided with a first through-hole 11211, and the second mounting platform 1122 is provided with a second through-hole 11221. Wherein, the first direction is Figure 1In the left-right direction shown, if the first through hole 11211 and the second through hole 11221 are arranged on the same mounting table, it will cause the parts of the first cover plate 121 and the dust removal sticker 13 exposed outside the seat body 111 to be on the same side. When the dust removal sticker 13 needs to be pulled out, the dust removal sticker 13 is pulled out from the second through hole 11221 by pulling the part of the dust removal sticker 13 exposed outside the seat body 111. However, since the parts of the first cover plate 121 and the dust removal sticker 13 exposed outside the seat body 111 are on the same side, when pulling the part of the dust removal sticker 13 exposed outside the seat body 111, it may accidentally touch the part of the first cover plate 121 exposed outside the seat body 111, resulting in the movement of the first cover plate 121 and further causing the leakage of liquid metal. In this embodiment, the first mounting table 1121 and the second mounting table 1122 are oppositely arranged on the left and right sides of the receiving groove 1113, and the first mounting table 1121 is provided with the first through hole 11211, and the second mounting table 1122 is provided with the second through hole 11221. When the dust removal sticker 13 needs to be pulled out from the second through hole 11221, since one end of pulling out the first cover plate 121 and one end of pulling out the dust removal sticker 13 are on the left and right sides of the receiving groove 1113 respectively, it is easier to operate and there will be no accidental touch phenomenon. According to an embodiment of the present invention, the first mounting table 1121 and the second mounting table 1122 can also be arranged perpendicular to each other, that is, the extending direction of the first mounting table 1121 is perpendicular to the extending direction of the second mounting table 1122.

[0050] It should be noted that the first cover plate 121 includes a first handle portion 1212 and a first plate body 1211 which are connected to each other. The top surface of at least part of the body of the first plate body 1211 is used to fit with the bottom surface 1111 of the seat body, so that the first plate body 1211 can block the notch of the receiving groove 1113, avoiding the leakage and oxidation of the liquid metal located in the receiving groove 1113. When at least part of the body of the first plate body 1211 fits with the bottom surface 1111 of the seat body to block the notch of the receiving groove 1113, the remaining body of the first plate body 1211 can be located in the first through hole 11211, or at least part of the body of the first handle portion 1212 can be located in the first through hole 11211, thereby restricting the up and down movement of the first cover plate 121; at least part of the first handle portion 1212 also protrudes outside the seat body 111, facilitating the user to drive the first plate body 1211 to block or expose the notch of the receiving groove 1113 by pulling the first handle portion 1212; the dust removal sticker 13 includes a pulling portion 131 and a dust removal portion 132 which are connected to each other. At least part of the body of the dust removal portion 132 fits with the first plate body 1211 located below the seat body 111. The remaining part of the body of the dust removal portion 132 can be located in the second through hole 11221, or part of the body of the pulling portion 131 can be located in the second through hole 11221, thereby restricting the up and down movement of the dust removal sticker 13. The bottom surface of the dust removal portion 132 and the area located below the seat body 111 are used to fit with the coating area 212, so as to remove the dust and foreign matters in the coating area 212. At least part of the body of the pulling portion 131 protrudes outside the seat body 111, so that the user can easily drive the dust removal portion 132 to move by pulling the exposed part of the pulling portion 131.

[0051] In one embodiment, the top wall 11212 of the first through hole is flush with the bottom surface 1111 of the seat body, so that the top surface 1213 of the first cover plate can fit with the bottom surface 1111 of the seat body. The top surface 1213 of the first cover plate fits with the bottom surface 1111 of the seat body, thereby effectively sealing the receiving groove 1113 and avoiding the leakage and oxidation of the liquid metal located in the receiving groove 1113.

[0052] As Figures 3 to 9 shown, in one embodiment, an exhaust hole 1115 is provided in the bottom wall 1114 of the receiving groove. By providing the exhaust hole 1115, when pressing the top surface 1112 of the seat body located above the receiving groove 1113 and moving the pressing position, the air located in the receiving groove 1113 can be discharged from the exhaust hole 1115, thereby reducing the probability of bubbles appearing in the coating area 212.

[0053] In one embodiment, a groove 1116 is formed on the top surface of the mounting base 11, and the exhaust hole 1115 penetrates through the bottom wall 11162 of the groove. The cover plate assembly 12 further includes a second cover plate 122, and the second cover plate 122 is used to block or expose the exhaust hole 1115. Among them, a groove 1116 is formed on the top surface 1112 of the seat body. By providing the exhaust hole 1115, during the process of applying the liquid metal, the air in the receiving groove 1113 can be discharged from the exhaust hole 1115, thereby effectively reducing the probability of generating bubbles. During the process of loading the liquid metal into the receiving groove 1113, since the second cover plate 122 seals the exhaust hole 1115, the leakage of the liquid metal from the exhaust hole 1115 is effectively avoided. It should be noted that a thin-wall structure is provided between the bottom wall 11162 of the groove and the bottom wall 1114 of the receiving groove. By minimizing the distance between the bottom wall 11162 of the groove and the bottom wall 1114 of the receiving groove as much as possible, the elastic deformation of the bottom wall 1114 of the receiving groove can be more easily used to drive the liquid metal to move, so that the liquid metal is evenly distributed within the application area 212.

[0054] In one embodiment, a communication hole 11161 communicating with the groove 1116 is formed on the side wall of the seat body 111. The bottom wall of the communication hole 11161 is coplanar with the bottom wall 11162 of the groove. The second cover plate 122 is slidably engaged with the communication hole 11161, and the bottom surface 1223 of the second cover plate can be attached to the bottom wall 11162 of the groove, so that the second cover plate 122 can block or expose the exhaust hole 1115. When it is necessary to press the bottom wall 11162 of the groove to make the liquid metal evenly distributed, the second cover plate 122 is pulled out from the communication hole 11161, so that the acting force can directly act on the bottom wall 11162 of the groove. By providing the communication hole 11161, the movement of the second cover plate 122 is guided through the communication hole 11161, so that the second cover plate 122 can move stably along a determined direction. And when the second cover plate 122 blocks the exhaust hole 1115, the communication hole 11161 can also play a certain limiting role on the second cover plate 122, that is, restricting the second cover plate 122 from moving away from the exhaust hole 1115 along the axial direction of the exhaust hole 1115.

[0055] According to an embodiment of the present invention, the second cover plate 122 includes a second handle portion 1222 and a second plate body 1221 that are connected to each other. The bottom surface of at least a part of the body of the second plate body 1221 is used to fit against the side wall of the groove 1116 close to the receiving groove 1113, so as to block the exhaust hole 1115 exposed on the side wall, thereby preventing the leakage of liquid metal from the exhaust hole 1115 during the process of filling the receiving groove 1113 with liquid metal. When at least a part of the body of the second plate body 1221 is located in the groove 1116 and blocks the exhaust hole 1115, at least a part of the body of the second handle portion 1222 is exposed outside the seat body 111, so that the user can drive the second plate body 1221 to move through the second handle portion 1222.

[0056] According to an embodiment of the present invention, the first handle portion 1212 is provided with a first identifier 1215, the second handle portion 1222 is provided with a second identifier 1224, and the pulling portion 131 is provided with a pulling identifier 135, so as to facilitate the user to distinguish them.

[0057] In one embodiment, the coating device 1 further includes a squeegee 14. The squeegee 14 is used to apply the coating on the coating area 212 through the side wall of the groove 1116 facing the receiving groove 1113. The squeegee 14 acts on the first side wall through the communication hole 11161. By scraping and pressing the first side wall with the squeegee 14, the liquid metal can be more evenly distributed in the coating area 212. It should be noted that the extending direction of the squeegee 14 is perpendicular to the sliding direction of the first cover plate 121, and the sliding direction of the squeegee 14 is opposite to the moving direction when the first cover plate 121 is withdrawn from the first through hole 11211.

[0058] According to an embodiment of the present invention, the number of exhaust holes 1115 is multiple. The multiple exhaust holes 1115 are arranged at intervals in a direction perpendicular to the sliding direction of the first cover plate 121, and the multiple exhaust holes 1115 are arranged close to the position where the second through hole 11221 is located. Taking the first through hole 11211 on the left side as an example, when the first cover plate 121 moves to the left, it is withdrawn, and the withdrawal process will drive part of the liquid metal to move to the left together with the first cover plate 121. This will cause the volume of the liquid metal on the left side of the receiving cavity to be larger than the volume of the liquid metal on the right side of the receiving cavity after the first cover plate 121 is withdrawn. In order to make the liquid metal evenly coated, the squeegee 14 needs to scrape and press the side wall of the groove 1116 close to the receiving groove 1113 in a direction opposite to the withdrawal direction of the first cover plate 121, so that the air in the receiving groove 1113 moves from left to right and is discharged from the exhaust hole 1115. When liquid metal flows out of the vent hole, it means that the air has been discharged and the liquid metal is evenly distributed in the coating area 212. It should be noted that since the bottom surface 1111 of the seat body is in contact with the top surface of the chip 21a during the coating process, the liquid metal is in a sealed state during the coating process, thereby ensuring that the liquid metal will not deteriorate during the coating process.

[0059] According to an embodiment of the present invention, a direction mark 1118 is provided on the top surface 1112 of the seat body, and the pointing direction of the direction mark 1118 is opposite to the moving direction when the first cover plate 121 is withdrawn from the first through hole 11211, so that the user can operate the scraper 14 to scrape the groove wall on the side of the groove 1116 close to the receiving groove 1113 in the direction pointed by the direction mark 1118 according to the direction mark 1118.

[0060] In one embodiment, the seat body 111 is provided with a placement groove 1117 for storing the scraper 14. By providing the placement groove 1117 for placing the scraper 14, the scraper 14 can be stored.

[0061] In one embodiment, the seat body 111 is made of a transparent material; and / or, the seat body 111 is made of an elastic material. When the seat body 111 is made of a transparent material, the user can clearly see the distribution of the liquid metal in the coating area 212 through the seat body 111, which helps to master the coating condition of the liquid metal and is more conducive to the uniform coating of the liquid metal in the coating area 212; the seat body 111 is made of an elastic material, so as to ensure that the seat body 111 has good ductility. Combined with the thin-wall structure between the first groove wall and the bottom wall 1114 of the receiving groove, the thin-wall structure can generate greater deformation under the action of the scraper 14, which helps to coat the liquid metal more evenly. Among them, the seat body 111 can be made of PVC (English full name: Polyvinyl chloride, Chinese name: polyvinyl chloride) material.

[0062] In one embodiment, the mounting seat 11 further includes a plurality of positioning platforms 113, and the plurality of positioning platforms 113 are all mounted on the bottom surface 1111 of the seat body. The plurality of positioning platforms 113 are used for positioning the workpiece to be coated 21. The chip 21a is positioned by the positioning platform 113 to prevent the chip 21a from sliding relative to the seat body 111, resulting in the leakage of the liquid metal outside the chip 21a.

[0063] According to an embodiment of the present invention, the second through hole 11221 penetrates the positioning boss, and a support step 1131 is formed on the positioning boss. The support step 1131 is used to abut against the bottom surface of the dust-proof sheet, so as to support the dust-proof sheet.

[0064] In one embodiment, both the first cover plate 121 and the second cover plate 122 are made of materials that are not easily attached with paint. That is, both the first cover plate 121 and the second cover plate 122 are made of materials with poor wettability to liquid metal to prevent the first cover plate 121 and the second cover plate 122 from sticking to the liquid metal; the first cover plate 121 and the second cover plate 122 can also be made of PVC material.

[0065] According to an embodiment of the present invention, the seat body 111 is also made of a material with poor wettability to liquid metal, preventing part of the liquid metal from remaining on the wall of the receiving groove 1113 after the liquid metal is applied.

[0066] In an embodiment, the volume of the receiving groove 1113 is larger than the volume of the liquid metal. Thus, during the application process, it helps to discharge the air in the receiving groove 1113 through the exhaust hole 1115.

[0067] In addition, the present invention also provides an application device 2, as Figures 1 to 9 shown. In an embodiment, the application device 2 includes a workpiece to be coated 21, a coating material, and the above-mentioned application device 1. The workpiece to be coated 21 includes a chip 21a, and the coating material includes liquid metal. Since the application device 2 adopts all the technical solutions of the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be elaborated here one by one.

[0068] Among them, the step of applying the liquid metal to the application area 212 on the chip 21a can be as follows: First, place the second cover plate 122 in the groove 1116 to block the exhaust hole 1115, then drop the liquid metal into the receiving groove 1113. After the liquid metal is loaded, push the first cover plate 121 to slide relative to the first through hole 11211 so that the first cover plate 121 seals the notch of the receiving groove 1113 to prevent the liquid metal from leaking and oxidizing during the process of moving the application device 1. Then, push the dust removal sticker 13 to slide relative to the second through hole 11221 so that the top surface 133 of the dust removal sticker fits with the bottom surface of the liquid metal. Then, fix the seat body 111 on the chip 21a through the positioning boss. At this time, the side of the dust removal sticker 13 facing away from the first plate body 1211 fits with the application area 212. Pull out the dust removal sticker 13 from the second through hole 11221, thereby taking away the dust and impurities in the application area 212. Then, pull out the first cover plate 121 from the first through hole 11211, and press down the seat body 111 so that the bottom surface 1111 of the seat body fits with the surface of the chip 21a to prevent the liquid metal from leaking outside the chip 21a. Without the shielding of the first cover plate 121, the liquid metal will flow from the receiving groove 1113 to the application area 212. Then, remove the second cover plate 122, take out the squeegee 14 from the placement groove 1117, and operate the squeegee 14 to scrape and press the groove wall on the side of the groove 1116 facing the receiving groove 1113 in the direction opposite to the moving direction when the first cover plate 121 is pulled out, so that the bottom wall 1114 of the receiving groove undergoes elastic deformation, and the liquid metal in the receiving groove 1113 is evenly applied to the application area 212 under the extrusion of the bottom wall of the receiving groove 1113. During the application process, the air in the receiving groove 1113 will be discharged through the exhaust hole 1115. When liquid metal overflows from the exhaust hole 1115, it can be determined that the application of the application area 212 of the chip 21a has been completed. Remove the application device 1, and the liquid metal will be evenly applied to the application area 212 of the chip 21a.

[0069] The above is only the preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structural transformation made under the concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied to other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A coating device for coating a coating on a coating area of a workpiece to be coated, characterized in that, The smearing device comprises: A mounting seat, wherein a receiving groove is provided on the bottom surface of the mounting seat, the receiving groove is used to receive the paint, and the bottom surface of the mounting seat is used to fit with the top surface of the piece to be coated; The cover plate assembly comprises a first cover plate, wherein the first cover plate can seal or expose a notch of the receiving groove.

2. The coating device according to claim 1, wherein The coating device further comprises a dust removal sticker, which is arranged on a side of the first cover plate away from the receiving groove, and is used for adhering foreign matter to the surface of the workpiece to be coated.

3. The smearing device according to claim 2, characterized in that, The bottom surface of the first cover plate can be fitted with the top surface of the dust removal patch, and the side of the dust removal patch facing away from the first cover plate is used to fit with the application area.

4. The smearing device according to claim 3, characterized in that The mounting seat includes a seat body and a mounting platform assembly that are interconnected, the bottom surface of the seat body is provided with the accommodating groove, the bottom surface of the seat body is used to fit with the top surface of the piece to be coated, and the cover plate assembly is provided with a first through hole for slidingly cooperating with the first cover plate and a second through hole for slidingly cooperating with the dust removal sticker.

5. The coating device according to claim 4, characterized in that, The bottom wall of the first through hole is in contact with the bottom surface of the first cover plate, the top wall of the second through hole is in contact with the top surface of the dust removal patch, the bottom surface of the first cover plate and the top wall of the second through hole are coplanar, and the bottom wall of the first through hole and the top surface of the dust removal patch are coplanar, so that the bottom surface of the first cover plate can be in contact with the top surface of the dust removal patch.

6. The coating device according to claim 4, characterized in that, The top wall of the first through hole is flush with the bottom surface of the seat body, so that the top surface of the first cover plate can fit with the bottom surface of the seat body.

7. The application device according to claim 4, characterized in that The mounting platform assembly includes a first mounting platform and a second mounting platform. The first mounting platform and the second mounting platform are arranged on both sides of the receiving groove along a first direction. The first mounting platform is provided with the first through hole, and the second mounting platform is provided with the second through hole.

8. The application device according to any one of claims 1 to 7, characterized in that, The bottom wall of the containing groove is provided with an exhaust hole.

9. The application device according to claim 8, characterized in that, A groove is formed on the top surface of the mounting seat, and the exhaust hole passes through the bottom wall of the groove. The cover plate assembly also includes a second cover plate, and the second cover plate is used to cover or expose the exhaust hole.

10. The coating device according to claim 9, characterized in that, A connecting hole connected to the groove is formed on the side wall of the mounting seat, and the bottom wall of the connecting hole is coplanar with the bottom wall of the groove. The second cover plate is slidably matched with the connecting hole, and the bottom surface of the second cover plate can be fitted with the bottom wall of the groove, so that the second cover plate can cover or expose the exhaust hole.

11. The coating device according to claim 9, characterized in that, The coating device further comprises a scraper, which is used to coat the coating on the coating area through the bottom wall of the groove.

12. The coating device according to claim 11, wherein, The mounting seat is provided with a placement groove, and the placement groove is used for storing the scraper.

13. The smearing device according to any one of claims 1 to 7, characterized in that, The mounting seat is made of a transparent material; and / or, the mounting seat is made of an elastic material.

14. The smearing device according to any one of claims 1 to 7, characterized in that, The bottom surface of the mounting seat is provided with a plurality of positioning platforms, and the plurality of positioning platforms are used for positioning the workpiece to be coated.

15. A smearing device, characterized in that, The coating equipment comprises a coating object and a coating device as claimed in any one of claims 1 to 14, wherein the coating object comprises a chip and the coating comprises liquid metal.

Images