Clamp special for ceramic packaging tube shell and eutectic device

Abstract

The utility model provides a special fixture for a ceramic packaging tube shell and a eutectic device, the special fixture for the ceramic packaging tube shell comprises a fixed block fixedly connected to a heating platform, and an embedding hole for the ceramic packaging tube shell to pass through is arranged on the fixed block in a penetrating manner; the special clamp for the ceramic packaging tube shell further comprises a pressing assembly used for pressing and fixing the ceramic packaging tube shell, the pressing assembly comprises an extrusion structure and a fixing structure connected with the extrusion structure, the extrusion structure is used for extruding the fixing lugs of the ceramic packaging tube shell, and the fixing structure is used for fixing the ceramic packaging tube shell. The fixing structure is used for being fixedly connected with an external machine table. According to the special clamp for the ceramic packaging tube shell, a good fixing effect can be achieved through the two fixing modes of the fixing block and the pressing assembly, operation is easy, cost is low, and the defects that original vacuum adsorption force of a heating platform is small, and the tube shell displaces are overcome.

Description

Technical Field

[0001] This utility model relates to the technical field of power device packaging, and in particular to a special fixture and eutectic device for ceramic packaging tubes. Background Technology

[0002] In the packaging of integrated circuits and power devices, eutectic bonding plays a crucial role. Currently, there are generally two types of eutectic bonding equipment: one is orbital eutectic bonding, which utilizes an orbital transport carrier. In this method, the heating of the eutectic region is isothermal, meaning that production can only begin after the temperature has been reached. Isothermal heating is not conducive to solder preheating, which is mainly used to remove moisture from inside the package and reduce thermal mismatch stress between the package, chip, and solder, thus affecting product quality. Furthermore, this method requires a corresponding ceramic packaging package carrier, which has a long design and manufacturing cycle and high cost. For NPI products, this method has certain limitations; therefore, the second eutectic bonding method is generally used.

[0003] Secondly, there is pulse-heated platform eutectic. Pulse-heated platforms can be designed with different heating and cooling curves, including heating to preheating temperature, holding, heating to eutectic temperature, holding, and cooling. This results in superior eutectic quality compared to orbital eutectic. However, pulse-heated platform eutectic also has drawbacks, namely the issue of shell fixation. Currently, the common method is to create vacuum holes on the pulse-heated platform, which attract the shell during operation. However, this suction force is relatively weak, and the shell is prone to displacement during eutectic friction, severely affecting the eutectic quality. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a special fixture for ceramic encapsulation tubes and shells. This fixture aims to solve the technical problem in existing technologies where vacuum holes are opened on a pulse heating platform to attract the tubes and shells during operation. However, the suction force is relatively weak, and the tubes and shells are prone to displacement during eutectic friction, which seriously affects the eutectic quality.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0006] A special fixture for ceramic encapsulation tube shells includes a fixing block fixed to a heating platform. The fixing block has an insertion hole through which the ceramic encapsulation tube shell passes. The special fixture for ceramic encapsulation tube shells also includes a clamping assembly for pressing and fixing the ceramic encapsulation tube shell. The clamping assembly includes a pressing structure and a fixing structure connected to the pressing structure. The pressing structure is used to press the fixing lug of the ceramic encapsulation tube shell, and the fixing structure is used to fix it to an external machine tool.

[0007] According to one aspect of the above technical solution, the outer diameter of the ceramic encapsulation shell is consistent with the diameter of the embedding hole, and the ceramic encapsulation shell is inserted into the embedding hole so that the ceramic encapsulation shell fits tightly with the fixing block.

[0008] According to one aspect of the above technical solution, the fixing structure includes a strip-shaped portion and a connecting portion connecting the strip-shaped portion and the extrusion structure, wherein the connecting portion is inclined from the extrusion structure toward the strip-shaped portion from top to bottom.

[0009] According to one aspect of the above technical solution, the strip-shaped part is provided with a strip-shaped groove, and a fixing bolt is used to set the strip-shaped part. The strip-shaped part is fixedly connected to the external machine base through the fixing bolt.

[0010] According to one aspect of the above technical solution, there are two clamping components, which are located on opposite sides of the ceramic encapsulation shell and are centrally symmetrically arranged around the midpoint of the ceramic encapsulation shell. The two clamping components are respectively used to clamp the two fixing ears of the ceramic encapsulation shell.

[0011] According to one aspect of the above technical solution, the fixing block is provided with a first clearance hole, which is used for the connecting part and the strip part to pass through.

[0012] According to one aspect of the above technical solution, the extrusion structure includes an extrusion portion that contacts the fixed ear and an extension portion that connects to the connecting portion. The extrusion portion and the extension portion are integrally formed, and a second clearance hole for avoiding the ceramic encapsulation shell is provided between the extrusion portion and the extension portion.

[0013] This utility model also provides a eutectic device, including the ceramic encapsulation tube shell special clamp as described above.

[0014] According to one aspect of the above technical solution, the eutectic device further includes a heating platform located below the fixed block and the ceramic encapsulation shell, and a pneumatic protective cover surrounding the fixed block.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] By setting a fixing block on the heating platform and embedding the ceramic encapsulation shell into the embedding groove of the fixing block, the ceramic encapsulation shell can be initially positioned and fixed. Then, a clamping assembly is set up, and the fixing structure on the clamping assembly is placed at the external machine (i.e., the eutectic device). Then, the extrusion structure on the clamping assembly is placed at the fixing ear of the ceramic encapsulation shell. Then, the fixing structure is fixed to the external machine, so that the extrusion structure presses the fixing ear of the ceramic encapsulation shell, forming a second fixation.

[0017] This invention achieves good fixing effect through two fixing methods: fixing block and clamping component. It is simple to operate and low in cost, overcoming the shortcomings of the original vacuum adsorption heating platform, such as weak suction and tube displacement. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the ceramic encapsulation tube shell placed in the special fixture for ceramic encapsulation tube shell in the first embodiment of this utility model;

[0019] Figure 2 for Figure 1 Schematic diagram of the structure at the fixed block;

[0020] Figure 3 for Figure 1 Schematic diagram of the structure at the middle clamping component;

[0021] Figure 4 for Figure 1 Schematic diagram of the structure of the ceramic encapsulation shell;

[0022] Explanation of key component symbols:

[0023] Fixed block 10 Clamping components 20 Ceramic Encapsulation Tube 30 Embedded Hole 11 First clearance hole 12 Extrusion section 21 extension 22 Second clearance hole 23 Connection section 24 strip section 25 Slot 26 Fixing bolts 27 Fixed ear 31

[0024] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0025] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0026] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] Please see Figures 1 to 4 The image shows a special clamp for ceramic encapsulation tube shells according to the first embodiment of this utility model. It includes a fixing block 10 fixed to a heating platform. The fixing block 10 has an insertion hole 11 through which the ceramic encapsulation tube shell 30 passes. The special clamp for ceramic encapsulation tube shells also includes a clamping component 20 for pressing and fixing the ceramic encapsulation tube shell 30. The clamping component 20 includes a pressing structure and a fixing structure connected to the pressing structure. The pressing structure is used to press the fixing lug 31 of the ceramic encapsulation tube shell 30. The fixing structure is used to fix and connect to an external machine tool.

[0029] Understandably, this utility model can initially position and fix the ceramic encapsulation shell by setting a fixing block 10 on the heating platform and embedding the ceramic encapsulation shell into the embedding groove of the fixing block 10. Then, a pressing component 20 is set up, and the fixing structure on the pressing component 20 is placed at the external machine (i.e., the eutectic device). Then, the extrusion structure on the pressing component 20 is placed at the fixing ear 31 of the ceramic encapsulation shell. Then, the fixing structure is fixed to the external machine, so that the extrusion structure presses the fixing ear 31 of the ceramic encapsulation shell, forming a second fixation.

[0030] This utility model achieves a good fixing effect through two fixing methods: fixing block 10 and pressing component 20. It is simple to operate and low in cost, and overcomes the shortcomings of the original vacuum adsorption of the heating platform, such as weak suction and displacement of the tube shell.

[0031] Specifically, in this embodiment, the outer diameter of the ceramic encapsulation shell is the same as the diameter of the embedding hole 11, and the ceramic encapsulation shell is inserted into the embedding hole 11 so that the ceramic encapsulation shell fits tightly with the fixing block 10.

[0032] Understandably, by setting the outer diameter of the ceramic encapsulation shell to be consistent with the diameter of the insertion hole 11, the ceramic encapsulation shell can fit tightly with the fixing block 10 after being inserted into the insertion hole 11, preventing the ceramic encapsulation shell from being misaligned.

[0033] Furthermore, the fixing structure includes a strip-shaped portion 25 and a connecting portion 24 connecting the strip-shaped portion 25 and the extrusion structure. The connecting portion 24 is inclined from top to bottom from the extrusion structure toward the strip-shaped portion 25. The fixing block 10 is provided with a first clearance hole 12, which is used for the connecting portion 24 and the strip-shaped portion 25 to pass through.

[0034] Understandably, due to the height difference between the external machine and the fixed ear 31, the extrusion structure is higher than the fixed structure. In order for the extrusion structure to press the fixed ear 31 tightly while also fixing the strip 25 to the external mounting platform, a connecting part 24 is required for transition. A first clearance hole 12 is provided on the fixing block 10 for the connecting part 24 and the strip 25 to pass through.

[0035] Furthermore, the extrusion structure includes an extrusion portion 21 that contacts the fixing ear 31 and an extension portion 22 that connects to the connecting portion 24. The extrusion portion 21 and the extension portion 22 are integrally formed. A second clearance hole 23 for avoiding the ceramic encapsulation shell is provided between the extrusion portion 21 and the extension portion 22.

[0036] Furthermore, the strip-shaped portion 25 is provided with a strip-shaped groove 26, and a fixing bolt 27 is used to install the strip-shaped portion 25 to be fixedly connected to the external machine tool through the fixing bolt 27.

[0037] Understandably, by setting the strip groove 26, the fixing bolt 27 can be slid along the strip groove 26 to a suitable position according to the different structures of the external machine tool, and then the fixing bolt 27 can be locked.

[0038] Preferably, there are two clamping components 20, which are located on opposite sides of the ceramic encapsulation shell and are arranged symmetrically around the midpoint of the ceramic encapsulation shell. The two clamping components 20 are used to clamp the two fixing ears 31 of the ceramic encapsulation shell respectively.

[0039] Understandably, by fixing the ceramic encapsulation shell with two clamping components 20 on opposite sides, the ceramic encapsulation shell can be clamped symmetrically, which is more stable.

[0040] In summary, the ceramic encapsulation tube shell special clamp in the above embodiments of this utility model can initially position and fix the ceramic encapsulation tube shell by setting a fixing block 10 on the heating platform and embedding the ceramic encapsulation tube shell into the embedding groove of the fixing block 10. Then, a clamping component 20 is set, and the fixing structure on the clamping component 20 is placed at the external machine (i.e., eutectic device). Then, the extrusion structure on the clamping component 20 is placed at the fixing ear 31 of the ceramic encapsulation tube shell. Then, the fixing structure is fixed to the external machine, so that the extrusion structure presses the fixing ear 31 of the ceramic encapsulation tube shell, forming a second fixation.

[0041] This utility model achieves a good fixing effect through two fixing methods: fixing block 10 and pressing component 20. It is simple to operate and low in cost, and overcomes the shortcomings of the original vacuum adsorption of the heating platform, such as weak suction and displacement of the tube shell.

[0042] The second embodiment of this utility model provides a eutectic device, which includes the ceramic encapsulation shell special clamp mentioned in the first embodiment. The eutectic device also includes a heating platform (not shown in the figure) located below the fixing block and the ceramic encapsulation shell, and a pneumatic protective cover (not shown in the figure) surrounding the fixing block.

[0043] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A special clamp for ceramic encapsulation tube shells, characterized in that, The fixture includes a fixing block fixed to a heating platform, the fixing block having an insertion hole through which a ceramic encapsulation shell passes. The ceramic encapsulation shell special fixture also includes a clamping assembly for pressing and fixing the ceramic encapsulation shell. The clamping assembly includes a pressing structure and a fixing structure connected to the pressing structure. The pressing structure is used to press the fixing lug of the ceramic encapsulation shell, and the fixing structure is used to fix it to an external machine tool.

2. The special clamp for ceramic encapsulation tubes and shells according to claim 1, characterized in that, The outer diameter of the ceramic encapsulation shell is the same as the diameter of the embedding hole. The ceramic encapsulation shell is inserted into the embedding hole so that the ceramic encapsulation shell fits tightly against the fixing block.

3. The special clamp for ceramic encapsulation tubes and shells according to claim 1, characterized in that, The fixing structure includes a strip-shaped portion and a connecting portion connecting the strip-shaped portion and the extrusion structure. The connecting portion is inclined from top to bottom from the extrusion structure toward the strip-shaped portion.

4. The special clamp for ceramic encapsulation tubes and shells according to claim 3, characterized in that, The strip-shaped part is provided with a strip-shaped groove, and a fixing bolt is used to install the strip-shaped groove. The strip-shaped part is fixedly connected to the external machine base through the fixing bolt.

5. The special clamp for ceramic encapsulation tubes and shells according to claim 1, characterized in that, There are two clamping components, which are located on opposite sides of the ceramic encapsulation shell and are arranged symmetrically around the midpoint of the ceramic encapsulation shell. The two clamping components are used to clamp the two fixing ears of the ceramic encapsulation shell respectively.

6. The special clamp for ceramic encapsulation tubes and shells according to claim 3, characterized in that, The fixing block is provided with a first clearance hole, which is used for the connection part and the strip part to pass through.

7. The special clamp for ceramic encapsulation tubes and shells according to claim 3, characterized in that, The extrusion structure includes an extrusion portion that contacts the fixed ear and an extension portion that connects to the connecting portion. The extrusion portion and the extension portion are integrally formed. A second clearance hole is provided between the extrusion portion and the extension portion to avoid the ceramic encapsulation shell.

8. A eutectic device, characterized in that, The ceramic encapsulation tube housing clamp includes any one of claims 1 to 7.

9. The eutectic apparatus according to claim 8, characterized in that, The eutectic device also includes a heating platform located below the fixed block and the ceramic encapsulation shell, and a pneumatic protective cover surrounding the fixed block.

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