Tooling assembly and method of installing thermal interface sheet

Abstract

The application provides a tool assembly and a thermal interface sheet mounting method, and relates to the technical field of semiconductor testing.The tool assembly provided by the application comprises a positioning tool, and the positioning tool comprises a first tool body and a pressing assembly.The first tool body is provided with at least one positioning cavity, the positioning cavity is provided with a first opening for the thermal interface sheet and a pressing head to enter and exit, the side wall of the positioning cavity is provided with two first support surfaces that are oppositely arranged and are both provided with a second opening, and the distance between the two first support surfaces gradually increases in the direction towards the first opening.The pressing assembly is provided with a pressing surface, the pressing assembly is movably connected with the first tool body, so that the pressing surface enters and exits the positioning cavity through the second opening and the angle of the pressing surface relative to the first support surface is adjustable.The tool assembly provided by the application can realize the pre-positioning of the thermal interface sheet without disassembling the pressing head, which is beneficial to saving the time and manpower for replacing the thermal interface sheet and has a lower requirement for the technical experience of the operator.

Description

Technical Field

[0001] This invention relates to the field of semiconductor testing technology, and in particular to a tooling assembly and a method for mounting a thermal interface sheet. Background Technology

[0002] In semiconductor testing, the test probe is a key component for achieving electrical contact with the chip under test. To ensure accurate transmission of test signals and effective heat conduction, some test probes are equipped with thermal interface sheets, such as indium sheets. Indium sheets, as a flexible metal material with good thermal conductivity, can effectively ensure complete contact between the probe and the chip under test, reducing heat transfer loss.

[0003] During the test, the indenter needs to frequently contact and separate from the chip under test. As the number of pressure tests increases, the indium sheet will wear out, resulting in a decrease in contact performance. Therefore, it is necessary to replace the indium sheet with a new one to ensure the accuracy of the test results.

[0004] Currently, due to limitations in operating space and field of vision under the pressure head, in order to ensure that the indium sheet can be accurately aligned with the pressure head, the indium sheet replacement operation requires technicians to remove the entire pressure head from the floating head of the whole machine, manually remove the old indium sheet and attach the new indium sheet, and then reinstall the pressure head onto the testing equipment. After the pressure head is installed, height calibration and plane calibration are also required. If the equipment involves low temperature testing, the refrigerant inside the pressure head also needs to be cleaned after the pressure head is disassembled. It is time-consuming and laborious, and often requires experienced personnel to operate. Summary of the Invention

[0005] The purpose of this invention is to provide a tooling assembly that enables pre-positioning of the thermal interface sheet without disassembling the pressure head, thereby saving time and manpower for replacing the thermal interface sheet and requiring less technical experience from the operator. Additionally, a method for installing the thermal interface sheet using the above-mentioned tooling assembly is provided.

[0006] To achieve the above objectives, the present invention provides the following technical solution: In a first aspect, the present invention provides a tooling assembly, including a positioning tooling, the positioning tooling including a first tooling body and a pressing assembly; The first tooling body is provided with at least one positioning cavity. The positioning cavity is provided with a first opening for the hot interface sheet and the pressure head to enter and exit. The side wall of the positioning cavity is provided with two first support surfaces that are arranged opposite to each other and are each provided with a second opening. The distance between the two first support surfaces gradually increases along the direction toward the first opening. The pressing assembly has a pressing surface and is movably connected to the first tooling body so that the pressing surface enters and exits the positioning cavity through the second opening and the angle relative to the first support surface is adjustable, so as to press the heat interface sheet onto the outer side of the pressing head or cancel the pressing of the heat interface sheet.

[0007] In an optional embodiment, a mounting hole for mounting the pressing assembly is provided between the first support surface and the outer surface of the first tooling body. The mounting hole includes a first limiting segment disposed near the second opening, which is cut off by a plane perpendicular to the plane where the first opening is located and parallel to the extending direction of the first limiting segment. The first limiting segment has an upper contour line and a lower contour line. The upper contour line is disposed parallel to the first opening. The distance between the lower contour line and the upper contour line gradually increases in the direction away from the positioning cavity. The pressing assembly moves between the upper contour line and the lower contour line.

[0008] In an optional embodiment, the pressing assembly includes a pressing rod and a pressing head, one end of the pressing rod passing through the first tooling body and connected to the pressing head, the pressing head having the pressing surface, and the other end of the pressing rod located outside the first tooling body.

[0009] In an optional embodiment, an elastic element is provided between the pressing assembly and the first tooling body; The elastic element is configured to apply an outward pulling force away from the positioning cavity to the pressure rod, so that in its natural state, the pressing surface of the pressing assembly is coplanar with the second opening or located on the side of the second opening opposite to the positioning cavity.

[0010] In an optional embodiment, the positioning cavity has a first bottom surface at the end away from the first opening, and the shape of the first bottom surface is configured to match the shape of the end face of the pressure head extending into the positioning cavity; And / or, the sidewall of the positioning cavity is provided with two opposing second support surfaces, the second support surfaces being disposed between the two first support surfaces, and the distance between the two second support surfaces gradually increasing in the direction toward the first opening.

[0011] In an optional embodiment, the first tooling body includes a fixed base, a positioning component, and a pressure plate; The pressure plate is connected to the fixed base and forms at least one positioning cavity between the pressure plate and the fixed base; The positioning component is connected to the fixed base and forms a first guide cavity between the fixed base and the fixed base. The first guide cavity is located above the positioning cavity and communicates with the positioning cavity. The fixed base is connected to a first hand lever on the side opposite to the positioning component.

[0012] In an optional embodiment, the tooling assembly further includes a fixing fixture, which includes a second tooling body. The second tooling body has at least one fixing cavity, which has a third opening for the entry and exit of the thermal interface sheet and the pressure head. At least two opposing sidewalls of the fixing cavity are configured to press a portion of the thermal interface sheet against the side of the pressure head.

[0013] In an optional embodiment, the fixing cavity has a chamfered structure near the top of the third opening.

[0014] In a second aspect, the present invention provides a method for mounting a thermal interface sheet, employing a tooling assembly as described in any of the foregoing embodiments, comprising: The thermal interface sheet is placed inside the positioning cavity through the first opening; The first tooling body is fastened to the press head through the first opening, and the pressing assembly is operated to attach the heat interface sheet to the side of the press head corresponding to the bending part of the first support surface.

[0015] In an optional embodiment, the method for installing the thermal interface sheet further includes: removing the first tooling body and fastening the fixing tooling to the pressure head to attach the remaining portion of the thermal interface sheet to be bent to the side of the pressure head.

[0016] The tooling assembly and thermal interface sheet installation method provided by this invention can produce the following beneficial effects: Compared with the prior art, the tooling assembly provided by the first aspect of the present invention has a positioning cavity that can accommodate the heat interface sheet and the pressure head. The heat interface sheet can be bonded to the pressure head at least part of its edge through the pressing assembly, thereby enabling the pre-positioning of the heat interface sheet without disassembling the pressure head. This is beneficial for saving time and manpower in replacing the heat interface sheet and requires less technical experience from the operator.

[0017] The thermal interface sheet mounting method provided in the second aspect of the present invention includes the tooling assembly provided in the first aspect of the present invention, thereby having all the beneficial effects of the tooling assembly provided in the first aspect of the present invention. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1This is a three-dimensional structural schematic diagram of the positioning tooling provided in an embodiment of the present invention; Figure 2 This is a perspective view of the positioning fixture provided in the embodiment of the present invention during use; Figure 3 A top view of the fixing base provided in an embodiment of the present invention; Figure 4 for Figure 3 AA section diagram; Figure 5 A top view of the positioning fixture provided in an embodiment of the present invention; Figure 6 for Figure 5 BB cross-section diagram; Figure 7 for Figure 6 A magnified view of a portion at point C; Figure 8 A three-dimensional structural schematic diagram of the pressing assembly provided in an embodiment of the present invention; Figure 9 for Figure 5 DD cross-sectional view; Figure 10 This is a three-dimensional structural schematic diagram of the fixing fixture provided in an embodiment of the present invention; Figure 11 This is a three-dimensional structural schematic diagram of the first contouring indenter provided in an embodiment of the present invention; Figure 12 This is a three-dimensional structural schematic diagram of the second contouring indenter provided in an embodiment of the present invention.

[0020] Icons: 1-Positioning fixture; 11-First fixture body; 111-Positioning cavity; 1111-First opening; 1112-Second opening; 1113-First support surface; 1114-First bottom surface; 1115-Second support surface; 112-Mounting hole; 1121-First limiting section; 1122-Upper contour line; 1123-Lower contour line; 1124-Second limiting section; 1125-Third limiting section; 113-Fixing seat; 114-Positioning assembly; 115-Pressure plate; 116-First guide cavity; 117-First hand 12-Holding rod; 12-Pressure assembly; 121-Pressure rod; 1211-Rod body; 1212-Operating head; 1213-Second connecting piece; 122-Pressure head; 1221-Pressing surface; 1222-End; 1223-First connecting piece; 123-Elastic element; 2-Fixing fixture; 21-Second fixture body; 211-Fixing cavity; 2111-Third opening; 212-Second guide cavity; 22-Second hand handle; 3-Contouring pressure head; 31-First contouring pressure head; 32-Second contouring pressure head; 4-Pressure head; 5-Heat interface sheet. Detailed Implementation

[0021] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0024] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0025] A first aspect of the present invention provides a tooling assembly, such as Figure 1 and Figure 2 As shown, it includes a positioning fixture 1, which includes a first fixture body 11 and a pressing assembly 12. The first tooling body 11 is provided with at least one positioning cavity 111. The positioning cavity 111 is provided with a first opening 1111 for the hot interface sheet 5 and the pressure head 4 to enter and exit. The side wall of the positioning cavity 111 is provided with two first support surfaces 1113 that are arranged opposite to each other and are each provided with a second opening 1112. The distance between the two first support surfaces 1113 gradually increases in the direction toward the first opening 1111. The pressing assembly 12 has a pressing surface 1221. The pressing assembly 12 is movably connected to the first tooling body 11 so that the pressing surface 1221 enters and exits the positioning cavity 111 through the second opening 1112 and the angle relative to the first support surface 1113 is adjustable, so as to press the heat interface sheet 5 onto the outer side of the pressing head 4 or cancel the pressing of the heat interface sheet 5.

[0026] When it is necessary to replace the heat interface sheet 5, there is no need to remove the pressure head 4. First, remove the old heat interface sheet from the pressure head 4, and place the new heat interface sheet 5 into the positioning cavity 111 through the first opening 1111 on the positioning cavity 111, with the adhesive side of the heat interface sheet 5 facing upwards. Then, fasten the first tooling body 11 onto the pressure head 4, and the pressure head 4 enters the positioning cavity 111. Then proceed as follows: Figure 2 As shown, by operating the pressing assembly 12, the pressing surface 1221 is inserted into the positioning cavity 111 through the second opening 1112, and the angle of the pressing surface 1221 relative to the first support surface 1113 is adjusted to press and stick the edges of the heat interface sheet 5 and the two first support surfaces 1113 opposite to each other onto the side of the pressing head 4, so that the heat interface sheet 5 is initially positioned on the surface of the pressing head 4. The positioning fixture 1 is then removed. Finally, the remaining edge of the heat interface sheet 5 is bonded to the side wall of the pressing head 4 to realize the installation of the heat interface sheet 5.

[0027] The tooling assembly provided in the first aspect of the present invention has a positioning cavity 111 capable of accommodating the thermal interface sheet 5 and the pressure head 4. The thermal interface sheet 5 can be bonded to the pressure head 4 at least partially by means of the pressing assembly 12, thereby enabling the pre-positioning of the thermal interface sheet 5 without disassembling the pressure head 4. This is beneficial for saving time and manpower in replacing the thermal interface sheet 5 and requires less technical experience from the operator.

[0028] There are multiple ways in which the pressing assembly 12 can be movably connected to the first tooling body 11, such as using at least one of sliding fit and rotation fit.

[0029] In alternative implementations, such as Figure 3 and Figure 4 As shown, a mounting hole 112 for mounting the pressing assembly 12 is provided between the first support surface 1113 and the outer surface of the first tooling body 11. The mounting hole 112 communicates with the second opening 1112, forming an assembly channel from the outside to the inside of the positioning cavity 111. The pressing assembly 12 passes at least partially through the mounting hole 112 and extends to the second opening 1112, so that its pressing surface 1221 can enter the positioning cavity 111 through the second opening 1112, thereby applying force to the bending portion of the heat interface sheet 5 inside the positioning cavity 111.

[0030] The diameter of the mounting hole 112 is larger than the maximum outer diameter of the portion of the pressing assembly 12 located inside the mounting hole 112 in any cross-section along its axial direction. This clearance fit design allows the pressing assembly 12 to be adjusted radially and axially within the mounting hole 112 to a certain extent, thereby allowing the operator to flexibly adjust the spatial orientation of the pressing surface 1221 according to the actual pressing needs, ensuring that the pressing surface 1221 can be evenly attached to and apply force to the bending portion of the heat interface sheet 5.

[0031] In an optional embodiment, the pressing surface 1221 is perpendicular to the extending direction of the pressing assembly 12, so that the pressing assembly 12 can extend from the side of the first tooling body 11 through the mounting hole 112, which facilitates the operation of the pressing assembly 12 by personnel.

[0032] In alternative implementations, such as Figure 4 As shown, the mounting hole 112 includes a first limiting segment 1121 disposed near the second opening 1112. The first limiting segment 1121 is cut with a plane perpendicular to the plane where the first opening 1111 is located and parallel to the extension direction of the first limiting segment 1121. In the resulting cross section, the first limiting segment 1121 has an upper contour line 1122 and a lower contour line 1123.

[0033] The upper contour line 1122 is parallel to the plane where the first opening 1111 is located, that is, it is parallel to the opening direction of the positioning cavity 111. The distance between the lower contour line 1123 and the upper contour line 1122 gradually increases in the direction away from the positioning cavity 111, so that the first limiting segment 1121 has an asymmetrical trapezoidal or wedge-shaped structure that is inclined downward in the direction towards the outside of the first tooling body 11. The pressing assembly 12 can move between the upper contour line 1122 and the lower contour line 1123.

[0034] When using, such as Figure 2 As shown, in its natural state, the pressing assembly 12 can be positioned close to the lower contour line 1123 of the mounting hole 112 due to gravity or its own structural limitations. At this time, the pressing assembly 12 is inclined downward from the end near the positioning cavity 111 to the end away from the positioning cavity 111. This reduces the angle between the pressing surface 1221 at its end and the first support surface 1113, thereby reducing the area of ​​the pressing surface 1221 extending into the positioning cavity 111 in the natural state, or even causing the pressing surface 1221 to exit the positioning cavity 111.

[0035] During the process of installing the thermal interface sheet 5 into the positioning cavity 111, the above-mentioned arrangement can reduce the obstruction of the pressing surface 1221 to the thermal interface sheet 5, so that the thermal interface sheet 5 can fit against the surface of the positioning cavity 111.

[0036] When it is necessary to operate the pressing assembly 12, it can be rotated so that the pressing assembly 12 gradually approaches the upper contour line 1122 of the mounting hole 112. When the pressing assembly 12 is in contact with the upper contour line 1122, as... Figures 5 to 7 As shown, the pressing surface 1221 is perpendicular to the first opening 1111, which can stably press the part of the heat interface sheet 5 to be bent onto the side of the pressing head 4. The aforementioned upper contour line 1122 can limit the pressing assembly 12, ensuring that the pressing assembly 12 applies force more evenly when pressing the part of the heat interface sheet 5 to be bent.

[0037] Preferably, the lower contour line 1123 is perpendicular to the first support surface 1113. The above arrangement enables the bottom edge of the first limiting segment 1121 to form an orthogonal support relationship with the first support surface 1113, which is beneficial for the pressing assembly 12 to ensure that the pressing surface 1221 is parallel to the first support surface 1113 in its natural state.

[0038] In alternative implementations, such as Figure 4 As shown, the mounting hole 112 also includes a second limiting section 1124, which is located between the first limiting section 1121 and the second opening 1112. The second limiting section 1124 can be used to accommodate the end 1222 of the pressing assembly 12 to prevent the pressing assembly 12 from coming off the first tooling body 11.

[0039] The mounting hole 112 may also include a third limiting section 1125, which is located on the side of the first limiting section 1121 away from the positioning cavity 111. The third limiting section 1125 can be used to accommodate the part of the pressing assembly 12 away from the end 1222, so as to reduce the length of the pressing assembly 12 protruding from the outer surface of the first tooling body 11.

[0040] In alternative implementations, such as Figure 7 and Figure 8 As shown, the pressing assembly 12 includes a pressing rod 121 and a pressing head 122. One end of the pressing rod 121 passes through the first tooling body 11 and is connected to the pressing head 122. The pressing head 122 has a pressing surface 1221, and the other end of the pressing rod 121 is located outside the first tooling body 11.

[0041] When replacing the thermal interface sheet 5, the operator pushes the exposed end of the pressure rod 121 upward, causing the pressing head 122 to swing relative to the first support surface 1113. The pressing surface 1221 enters the positioning cavity 111 through the second opening 1112. The pressing surface 1221 gradually presses the edge of the thermal interface sheet 5 against the side wall of the pressing head 4 to stick and fix it, thus completing the initial pre-positioning of the thermal interface sheet 5.

[0042] During the above process, the operator can operate the pressing components 12 corresponding to the two first support surfaces 1113 at the same time, or operate the pressing component 12 on one side first and then operate the pressing component 12 on the other side.

[0043] The aforementioned pressing assembly 12 is decomposed into an operable pressing rod 121 and a pressing head 122 that performs the function, realizing the separation of external control and internal pressing functions, which facilitates the installation of the pressing assembly 12 into the first tooling body 11.

[0044] Specifically, such as Figure 7 As shown, the pressing head 122 includes an end 1222 and a first connector 1223. The end 1222 is detachably connected to the pressing rod 121 through the first connector. The end of the end 1222 facing away from the pressing rod 121 is the pressing surface 1221.

[0045] The aforementioned pressing head 122 has a simple structure, which facilitates the assembly and disassembly of the pressing rod 121 and reduces the installation difficulty of the pressing assembly 12.

[0046] The first connector 1223 can be a screw, pin, etc.

[0047] like Figure 7 As shown, the pressure rod 121 includes a rod body 1211, an operating head 1212, and a second connecting member 1213. The operating head 1212 is detachably connected to one end of the rod body 1211 through the second connecting member 1213, and the end 1222 is detachably connected to the other end of the rod body 1211 through the first connecting member 1223.

[0048] The aforementioned pressure rod 121 has a simple structure, is easy to process, and can be disassembled and assembled with the pressing head 122, thus reducing the installation difficulty of the pressing assembly 12.

[0049] The second connector 1213 can be a screw, pin, etc.

[0050] In alternative implementations, such as Figure 7 As shown, the pressing assembly 12 also includes an elastic element 123. One end of the elastic element 123 abuts against the operating head 1212 of the pressure rod 121, and the other end abuts against the end face of the third limiting segment 1125 in the mounting hole 112 that is close to the first limiting segment 1121.

[0051] The elastic element 123 can be a helical spring, disc spring, or other elastic element with the ability to recover deformation. Its elastic force is set along the axial direction of the pressure rod 121 and configured to apply an outward pulling force to the operating head 1212 in a direction away from the positioning cavity 111. In the natural state (i.e., no external pressing force is applied to the pressure rod 121), this outward pulling force causes the pressure rod 121 to drive the pressing head 122 to the reset position, so that the pressing surface 1221 of the pressing head 122 is coplanar with the plane of the second opening 1112. At this time, the heat interface sheet 5 is placed into the positioning cavity 111. The pressing surface 1221 and the first support surface 1113 jointly support the heat interface sheet 5, reducing the heat interface sheet 5 from sagging or creases, and ensuring the integrity of the shape of the heat interface sheet 5 when pressed on the side of the pressure head 4. Of course, in the natural state, the pressing surface 1221 can also retract to the side of the second opening 1112 away from the positioning cavity 111, that is, completely withdraw from the internal space of the positioning cavity 111.

[0052] First, the above-mentioned configuration ensures that when the positioning fixture 1 is placed before the pressure head 4 or removed after the hot interface sheet 5 is pressed, the pressing surface 1221 does not protrude from the first support surface 1113, thus avoiding interference with the structure inside the positioning cavity 111. Second, when a pressing action is required, the operator only needs to overcome the elastic force of the elastic element 123 to apply an axial thrust to the end of the pressure rod 121 exposed outside the first fixture body 11, which will drive the pressing head 122 into the positioning cavity 111 through the second opening 1112, and make the pressing surface 1221 adhere to the part of the hot interface sheet 5 to be bent for bending and pressing. After the external force is removed, the elastic element 123 automatically releases its elastic force, driving the pressing assembly 12 to reset, achieving quick disengagement, which is convenient for repeated use and batch operation.

[0053] The above-described embodiment achieves the automatic reset function of the pressing assembly 12 by introducing the elastic element 123, which improves the ease of operation and reliability of the tooling assembly and further reduces the technical requirements for operators.

[0054] The first tooling body 11 may have one positioning cavity 111, or it may have two, three, four or more positioning cavities 111.

[0055] In high-density testing scenarios, the spacing between electronic components is small, so the gaps between the multiple pressure heads 4 must also be very narrow. To prevent the thermal interface sheet 5 from being mistakenly attached to the side of an adjacent pressure head 4, preferably, there are at least two positioning cavities 111. During use, the thermal interface sheet 5 is pre-placed in each positioning cavity 111. After pre-pressing using the positioning fixture 1, the remaining edges of the thermal interface sheet 5 can be pressed against the side wall of the pressure head 4 using other fixtures to achieve the installation of the thermal interface sheet 5.

[0056] The advantage of the above setup is that a single pressing operation can simultaneously press the thermal interface sheet 5 onto multiple pressing heads 4, solving the problem of difficulty in pasting the thermal interface sheet 5 between adjacent pressing heads 4.

[0057] Specifically, the number of positioning cavities 111 is the same as the number of pressure heads 4. Figure 1 For example, there are three pressure heads 4. The first tooling body 11 is provided with three positioning cavities 111. The three positioning cavities 111 are arranged in a side-by-side manner consistent with the layout of the three pressure heads 4. In each positioning cavity 111, the first support surface 1113 is arranged between two first support surfaces 1113.

[0058] Specifically, the two first support surfaces 1113 are arranged in a direction perpendicular to the arrangement direction of the three positioning cavities 111, so as to facilitate the installation of the pressing assembly 12.

[0059] In alternative implementations, such as Figure 1 As shown, the positioning cavity 111 has a first bottom surface 1114 at the end away from the first opening 1111. The shape of the first bottom surface 1114 is configured to match the shape of the end face of the pressure head 4 extending into the positioning cavity 111.

[0060] For example, when the end face of the pressure head 4 extending into the positioning cavity 111 is circular, the first bottom surface 1114 is set to be circular accordingly; when the end face of the pressure head 4 is polygonal (such as square or hexagonal), the first bottom surface 1114 is set to be a plane that matches the contour of the polygon.

[0061] Simultaneously, when the pressure head 4 extends into the positioning cavity 111 and presses the heat interface sheet 5 onto the first bottom surface 1114, the vertical distance between each edge of the first bottom surface 1114 and the plane where the side of the pressure head is located is equal to the thickness of the heat interface sheet 5 or the thickness of the heat interface sheet 5 plus the adhesive. Since the bottom end of the first support surface 1113 is connected to the first bottom surface 1114, there is only enough space between the bottom end of the first support surface 1113 and the bottom end of the side wall of the pressure head 4 to accommodate the heat interface sheet 5 or the heat interface sheet 5 plus the adhesive.

[0062] The above-mentioned configuration helps to ensure the accuracy of the position of the pressure head 4 within the positioning cavity 111, preventing the pressure head 4 from shaking within the positioning cavity 111 during the assembly of the hot interface sheet 5. On the other hand, since there is only a distance between the bottom end of the first support surface 1113 and the bottom end of the side wall of the pressure head 4 that can accommodate the hot interface sheet 5 or the hot interface sheet 5 plus adhesive, the bent part of the hot interface sheet 5 can fit more tightly with the side wall of the pressure head 4 when the pressing assembly 12 is operated, and it is less likely to curl or wrinkle, so that the hot interface sheet 5 fits the side of the pressure head 4 more smoothly.

[0063] In alternative implementations, such as Figure 9As shown, the sidewall of the positioning cavity 111 is provided with two opposing second support surfaces 1115. The two second support surfaces 1115 are respectively located between two first support surfaces 1113 and in directions perpendicular to the directions of the two first support surfaces 1113. For example, if the two first support surfaces 1113 are arranged opposite each other along the X direction, then the two second support surfaces 1115 are arranged opposite each other along the Y direction. The distance between the two second support surfaces 1115 gradually increases along the direction toward the first opening 1111, thereby forming a cavity structure that gradually expands around the central axis of the positioning cavity 111 in space.

[0064] The side of the pressure head 4 is usually vertically arranged. The above-described embodiment ensures that after the first tooling body 11 is fastened to the pressure head 4, the part of the heat interface sheet 5 corresponding to the second support surface 1115 to be bent will not be in contact with the pressure head 4. The part to be bent can be pasted after the positioning tooling 1 is removed, thus avoiding the pre-bonding of the part to be bent to the side of the pressure head 4 without the pressing component 12 pressing it, which would cause curling or wrinkling.

[0065] When the pressure head 4 is tilted relative to the side of the second support surface 1115, the angle between the second support surface 1115 and the first bottom surface 1114 can be slightly larger than the angle between the side surface and the end face of the pressure head 4, so as to prevent the second support surface 1115 from directly pressing the part of the heat interface sheet 5 to be bent onto the side of the pressure head 4 after the first tooling body 11 is fastened to the pressure head 4.

[0066] In alternative implementations, such as Figure 1 As shown, the first tooling body 11 includes a fixed base 113, a positioning component 114, and a pressure plate 115.

[0067] Among them, the fixed base 113 serves as the basic support structure of the first tooling body 11, and is used to support and connect other components to ensure the stability and assembly accuracy of the overall structure.

[0068] The pressure plate 115 and the fixed base 113 are detachably connected, for example, by screws or clips. The pressure plate 115 and the fixed base 113 together form various positioning cavities 111, such as... Figure 7 As shown, a second limiting segment 1124 is formed between the pressure plate 115 and the fixed base 113. By designing the pressure plate 115 to be detachable, the processing of the second limiting segment 1124 can be facilitated, reducing the production cost of the positioning fixture 1.

[0069] like Figure 9As shown, the positioning component 114 is mounted above and connected to the fixed base 113, forming a first guide cavity 116 between them. The first guide cavity 116 is located above and communicates with the positioning cavity 111. The main function of the first guide cavity 116 is to guide the pressure head 4 to align with the positioning cavity 111, thereby improving the docking accuracy of the pressure head 4.

[0070] In addition, such as Figure 9 As shown, a first hand lever 117 is connected to the side of the fixed base 113 away from the positioning component 114. The first hand lever 117 makes it easy for the operator to hold and control the entire positioning fixture 1, which not only improves the ease of operation of the positioning fixture 1, but also keeps the fixture in a stable position during the assembly of the hot interface sheet 5.

[0071] In alternative implementations, such as Figure 10 As shown, the tooling assembly also includes a fixing fixture 2, which is used to achieve full fit and firm bonding between the heat interface sheet 5 and the pressure head 4 after the pre-positioning of the heat interface sheet 5 is completed.

[0072] Specifically, the fixed fixture 2 includes a second fixture body 21, which has a plurality of fixed cavities 211. Each fixed cavity 211 is provided in a one-to-one correspondence with the positioning cavity 111 on the first fixture body 11, so that the number and spatial layout of the fixed cavities 211 match the number and spatial layout of the pressure head 4.

[0073] Each fixed cavity 211 is provided with a third opening 2111. The third opening 2111 allows the pressure head 4 and the heat interface sheet 5, which has been initially pasted on its side, to be inserted or removed from top to bottom, facilitating the loading and unloading of the tooling.

[0074] At least two opposing sidewalls in the fixed cavity 211 are configured to press a portion of the thermal interface sheet 5 against the side of the pressure head 4. The aforementioned "partial thermal interface sheet 5" includes the portion that has not been pressed by the pressing assembly 12.

[0075] Preferably, the internal shape of the fixed cavity 211 is adapted to the outer contour of the corresponding pressure head 4, and each of its side walls is parallel to the corresponding side of the pressure head 4.

[0076] When the pressure head 4 is inserted into the fixing cavity 211, the side wall of the fixing cavity 211 applies a circumferential constraint force to the heat interface sheet 5. The gap between the fixing cavity 211 and the pressure head 4 only allows the heat interface sheet 5 and the adhesive on the heat interface sheet 5 to be accommodated. This allows the part of the heat interface sheet 5 that is not bonded to the pressure head 4 to extend fully from bottom to top along the side wall of the pressure head 4 and achieve a complete bond without bubbles or gaps, which significantly improves the flatness and bonding strength of the heat interface sheet 5 after installation.

[0077] like Figure 10As shown, the second tooling body 21 is also provided with a second guide cavity 212, which is located above the fixed cavity 211 and communicates with the fixed cavity 211. The main function of the second guide cavity 212 is to guide the pressure head 4 to align with the fixed cavity 211, thereby improving the docking accuracy of the pressure head 4.

[0078] like Figure 10 As shown, the second tooling body 21 is also provided with a second hand handle 22, which makes it easy for the operator to hold and apply vertical force to complete the pressing action, avoiding tilting that would cause uneven force on the heat interface sheet 5, resulting in it lifting or tearing.

[0079] In an optional embodiment, the top of the fixing cavity 211 near the third opening 2111 is provided with a chamfer structure, which facilitates the gathering and pasting of the heat interface sheet 5 to the side of the pressure head 4.

[0080] A second aspect of the present invention provides a method for mounting a thermal interface sheet. The method for mounting a thermal interface sheet provided in this second aspect employs the aforementioned tooling assembly, comprising: Apply adhesive to the bonding position of the heat interface sheet 5 corresponding to the pressure head beforehand. Specifically, the cut heat interface sheet 5 is pre-pressed into an outline by the contouring pressure head 3 so that the shape of the heat interface sheet matches the first bottom surface 1114 of the positioning cavity 111 and a number of first support surfaces 1113 and second support surfaces 1115 located on the edge of the first bottom surface 1114. Then, the adhesive is pasted to the part of the heat interface sheet 5 to be bent so that it can be stably placed in the positioning cavity 111 without shaking or deviating, and the heat interface sheet 5 can also obtain good support after the adhesive is pasted without folding. The thermal interface sheet 5 is placed in the positioning cavity 111 through the first opening 1111; The first tooling body 11 is fastened to the pressure head 4 through the first opening 1111, and the pressing assembly 12 is operated to make the hot interface sheet 5, corresponding to the bending part of the first support surface 1113, stick to the side of the pressure head 4.

[0081] In the above-mentioned method for installing the heat interface sheet, the initial positioning of the heat interface sheet 5 can be achieved without removing the pressure head 4, which helps to save time and manpower for replacing the heat interface sheet 5 and requires less technical experience from the operators.

[0082] In an optional embodiment, the hot interface sheet installation method further includes removing the first tooling body 11 and fastening the fixing tooling 2 onto the pressure head 4, so as to attach the remaining part of the hot interface sheet 5 to be bent to the side of the pressure head 4.

[0083] The thermal interface sheet installation method provided in the above embodiments, with the help of positioning fixture 1 and fixing fixture 2, achieves efficient and precise installation of the thermal interface sheet 5 without disassembling the pressure head 4. This method significantly reduces the difficulty of operation and improves replacement efficiency. At the same time, through a step-by-step pressing strategy, that is, first using positioning fixture 1 to achieve pre-positioning of local areas, and then using fixing fixture 2 to complete the overall bonding, the consistency and sealing performance of the thermal interface sheet 5 installation are effectively guaranteed.

[0084] Among them, such as Figure 11 and Figure 12 As shown, the contouring head 3 can have various shapes depending on the shape of the pressure head 4. For example, the contouring head 3 includes a first contouring head 31 and a second contouring head 32. The first contouring head 31 can press the bottom surface of the heat interface sheet 5 into a rectangle, and the second contouring head 32 can press the bottom surface of the heat interface sheet 5 into a cross shape.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A tooling assembly, characterized in that, It includes a positioning fixture (1), which includes a first fixture body (11) and a pressing assembly (12). The first tooling body (11) is provided with at least one positioning cavity (111). The positioning cavity (111) is provided with a first opening (1111) for the hot interface sheet (5) and the pressure head (4) to enter and exit. The side wall of the positioning cavity (111) is provided with two first support surfaces (1113) that are arranged opposite to each other and each has a second opening (1112). The distance between the two first support surfaces (1113) gradually increases in the direction toward the first opening (1111). The pressing assembly (12) has a pressing surface (1221). The pressing assembly (12) is movably connected to the first tooling body (11) so that the pressing surface (1221) can enter and exit the positioning cavity (111) through the second opening (1112) and the angle relative to the first support surface (1113) is adjustable so as to press the heat interface sheet (5) onto the outer side of the pressing head (4) or cancel the pressing of the heat interface sheet (5). A mounting hole (112) for mounting the pressing assembly (12) is provided between the first support surface (1113) and the outer surface of the first tooling body (11). The mounting hole (112) includes a first limiting segment (1121) located near the second opening (1112). The first limiting segment (1121) is cut off by a plane perpendicular to the plane where the first opening (1111) is located and parallel to the extension direction of the first limiting segment (1121). The first limiting segment (1121) has an upper contour line (1122) and a lower contour line (1123). The distance between the lower contour line (1123) and the upper contour line (1122) gradually increases in the direction away from the positioning cavity (111). The pressing assembly (12) moves between the upper contour line (1122) and the lower contour line (1123).

2. The tooling assembly according to claim 1, characterized in that, The upper contour line (1122) is set parallel to the first opening (1111).

3. The tooling assembly according to claim 1, characterized in that, The pressing assembly (12) includes a pressing rod (121) and a pressing head (122). One end of the pressing rod (121) is inserted into the first tooling body (11) and connected to the pressing head (122). The pressing head (122) has the pressing surface (1221). The other end of the pressing rod (121) is located outside the first tooling body (11).

4. The tooling assembly according to claim 3, characterized in that, An elastic element (123) is provided between the pressing assembly (12) and the first tooling body (11). The elastic element (123) is configured to apply an outward pulling force away from the positioning cavity (111) to the pressing rod (121) so that in the natural state, the pressing surface (1221) of the pressing assembly (12) is coplanar with the second opening (1112) or located on the side of the second opening (1112) away from the positioning cavity (111).

5. The tooling assembly according to any one of claims 1-4, characterized in that, The positioning cavity (111) has a first bottom surface (1114) at one end away from the first opening (1111), and the shape of the first bottom surface (1114) is configured to match the shape of the end face of the pressure head (4) extending into the positioning cavity (111); And / or, the sidewall of the positioning cavity (111) is provided with two opposing second support surfaces (1115), the second support surfaces (1115) are disposed between the two first support surfaces (1113), and the distance between the two second support surfaces (1115) gradually increases in the direction toward the first opening (1111).

6. The tooling assembly according to any one of claims 1-4, characterized in that, The first tooling body (11) includes a fixed base (113), a positioning component (114), and a pressure plate (115). The pressure plate (115) is connected to the fixed seat (113) and forms at least one of the positioning cavities (111) between the fixed seat (113). The positioning component (114) is connected to the fixed base (113) and forms a first guide cavity (116) between the fixed base (113). The first guide cavity (116) is located above the positioning cavity (111) and communicates with the positioning cavity (111). The fixed base (113) is connected to a first hand handle (117) on the side opposite to the positioning component (114).

7. The tooling assembly according to any one of claims 1-4, characterized in that, The tooling assembly further includes a fixing tool (2), which includes a second tooling body (21). The second tooling body (21) has at least one fixing cavity (211). The fixing cavity (211) has a third opening (2111) for the entry and exit of the heat interface sheet (5) and the pressure head (4). At least two oppositely arranged sidewalls of the fixing cavity (211) are configured to press a portion of the heat interface sheet (5) against the side of the pressure head (4).

8. The tooling assembly according to claim 7, characterized in that, The fixed cavity (211) has a chamfered structure near the top of the third opening (2111).

9. A method for mounting a thermal interface sheet, characterized in that, The tooling assembly as described in any one of claims 1-8 includes: The thermal interface sheet (5) is placed in the positioning cavity (111) through the first opening (1111); The first tooling body (11) is fastened to the pressure head (4) through the first opening (1111), and the pressing assembly (12) is operated to make the heat interface sheet (5) corresponding to the bending part of the first support surface (1113) be pasted to the side of the pressure head (4).

10. The method for mounting a thermal interface sheet according to claim 9, characterized in that, The method for installing the heat interface sheet further includes: removing the first tooling body (11), fastening the fixing tooling (2) onto the pressure head (4), so as to attach the remaining part of the heat interface sheet (5) to be bent to the side of the pressure head (4).

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