Tool for welding light window and porcelain body
By using welding tools made of high-density graphite and a specific structural design, the problem of welding stability between ceramic materials and light windows was solved, achieving uniform welding and reliable encapsulation of the light windows and ceramic bodies, and improving the flatness and transparency of the product.
Patent Information
- Application Number
- CN202520204374.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-10
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-02-10
AI Technical Summary
High-quality ceramic materials and light-window materials are expensive, and the difference in thermal expansion coefficients between different materials leads to stress concentration, which affects the long-term stability of the packaging.
The welding base, pressure plate cover, and pressure block core are made of high-density graphite material, with a specific through-hole structure and groove shape to ensure uniform welding of the light window and ceramic body. The thermal conductivity and low expansion coefficient of high-density graphite are used to improve welding stability.
This technology enables uniform welding between the light window and the ceramic body, improving the reliability and transparency of the packaging, solving the problem of incompatibility between welding strength and transparency, and ensuring the flatness and stability of the product.
Smart Images
Figure CN223903249U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the microelectronic packaging application technical field, concretely is a kind of tooling for optical window and porcelain body welding. BACKGROUND
[0002] It is known that black porcelain optical window packaging is a special packaging technology, mainly used in optoelectronic devices, sensors and other applications requiring transmission of specific wavelength light, which combines the high thermal conductivity, mechanical strength and electrical insulation properties of ceramic materials, and the transmission ability of specific wavelength light.
[0003] But high-quality ceramic materials and optical window materials are high in cost, and the difference in thermal expansion coefficient between different materials can cause stress concentration, affecting the long-term stability of packaging. SUMMARY
[0004] (I) technical problem solved
[0005] In view of the deficiencies in the prior art, the utility model provides a tooling for optical window and porcelain body welding.
[0006] (II) technical scheme
[0007] To achieve the above purpose, the utility model provides the following technical scheme: a tooling for optical window and porcelain body welding, comprising a welding base, a pressing plate upper cover and a pressing block core, the welding base is provided with a groove in the center, the groove is provided with a fillet at four corners, the welding base is provided with a first through hole, the first through hole is located on both sides of the groove, the welding base is provided with a counterbore at the bottom, the counterbore is communicated with the first through hole, the pressing plate upper cover is provided with a second through hole in the center, and the pressing plate upper cover is provided with a third through hole.
[0008] In order to improve the effect of use, the utility model improves that welding base, pressing plate upper cover and pressing block core all adopt high-density graphite material.
[0009] In order to improve the effect of use, the utility model improves that the first through hole is matched with the third through hole.
[0010] (III) beneficial effects
[0011] Compared with the prior art, the utility model provides a tooling for optical window and porcelain body welding, which has the following beneficial effects:
[0012] The tool for welding the light window and the porcelain body, the structure ensures that the light window is uniformly and flatly attached to the welding surface of the porcelain body, ensures the reliability of product packaging, and provides a more excellent welding environment for the subsequent transparent process, and solves the difficulty that the transparency and welding strength of the light window and the porcelain body cannot be perfectly compatible in the one-time sintering process. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 It is a structural schematic diagram of the utility model;
[0014] Figure 2 It is a structural schematic diagram of the shaft side of the utility model;
[0015] Figure 3 It is a structural schematic diagram of the utility model Figure 1 It is a structural schematic diagram of the welding base in the utility model;
[0016] Figure 4 It is a structural schematic diagram of the utility model Figure 1 It is a structural schematic diagram of the pressing plate upper cover in the utility model;
[0017] Figure 5 It is a structural schematic diagram of the pressing block core in the utility model; Figure 1 It is a structural schematic diagram of the pressing block core in the utility model;
[0018] In the drawing: 1, welding base; 2, first through hole; 3, counterbore; 4, pressing plate upper cover; 5, second through hole; 6, third through hole; 7, pressing block core; 8, groove. DETAILED DESCRIPTION
[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0020] Please refer to Figures 1-5 A tool for welding a light window and a porcelain body, comprising a welding base 1, a pressing plate upper cover 4 and a pressing block core 7, the welding base 1 is provided with a groove 8 in the center, the groove 8 is provided with a round corner at four corners, the welding base 1 is provided with a first through hole 2, the first through hole 2 is located on both sides of the groove 8, the welding base 1 is provided with a counterbore 3 at the bottom, the counterbore 3 is communicated with the first through hole 2, the pressing plate upper cover 4 is provided with a second through hole 5 in the center, and the pressing plate upper cover 4 is provided with a third through hole 6.
[0021] In the embodiment, the welding base 1, the pressing plate upper cover 4 and the pressing block core 7 are all made of high-density graphite material.
[0022] In this embodiment, the first through hole 2 matches the third through hole 6.
[0023] In summary, the welding base 1, the pressing plate upper cover 4 and the pressing block core 7 are all made of high-density graphite. High-density graphite has excellent thermal conductivity and a low coefficient of thermal expansion. The excellent thermal conductivity can make the solder evenly heated, so that the light window and the porcelain body are uniformly and tightly sintered. In addition, the low expansion coefficient can ensure a stable deformation amount at a high temperature, thereby ensuring the matching degree of the light window during the sintering process of the porcelain body. The welding base 1 is a rectangular graphite plate with a size of 120mm*80mm*8mm. Seven recesses 8 with a size of 37mm*7.4mm*1.25mm are milled on the surface of the welding base 1. The recesses 8 are mainly used for limiting the porcelain body and the light window, so as to ensure that the displacement does not occur during the pre-welding process, thereby avoiding welding failure. R1.0 round corners are made at four corners of the recess 8 to facilitate assembly and cooperation. There are φ8 counterbores 3 and φ2.8 first through holes 2 on both sides of each recess 8, which are used for cooperating with the pressing plate upper cover 4 to fix the product. The pressing plate upper cover 4 is a rectangular graphite block with a size of 80mm*12mm*10mm. The overall structure can be divided into three layers. The first layer is a boss with a size of 40mm*12mm*5mm. The second layer is a boss with a size of 80mm*12mm*5mm. The third layer is a boss with a size of 12.65mm*4.65mm*0.6mm. There are a total of seven stations. A second through hole 5 with a size of 7.55mm*3.45mm is formed in the center of the first layer of each pressing plate upper cover 4, which is used for placing and limiting the pressing block core 7. There are φ2.8 third through holes 6 on both sides of the second layer of the pressing plate upper cover 4, which are used for cooperating with the through holes of the welding base 1 to fix the product. The third layer of the boss is used for flattening and fixing the porcelain body. The pressing block core 7 is generally made of a rectangular graphite plate with a size of 13.49mm*9.39mm*28mm. The overall structure can be divided into three layers from top to bottom, which are three different sizes of cuboids. There are a total of seven stations. The first layer has a size of 8mm*3.9mm*8mm, which is used for cooperating with the counterweight to apply pressure to the product. The second layer has a size of 13.49mm*9.39mm*5mm, which is used for bearing and limiting the counterweight. The third layer has a size of 7.49mm*3.39mm*15mm, which is used for directly applying pressure to the surface of the light window to ensure the flatness during the sintering process. The main function of the pressing block core 7 is to compact the light window, so as to ensure that the light window is evenly laid out after softening during the pre-welding process, and forms a tight welding with the porcelain body, thereby ensuring the flatness of the product and the reliability of the packaging.
[0024] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A tool for welding a light window to a porcelain body, comprising a welding base (1), a pressing plate cover (4) and a pressing block core (7), characterized in that: The welding base (1) is provided with a groove (8) in the center, the groove (8) is provided with a round corner at the four corners, the welding base (1) is provided with a first through hole (2), the first through hole (2) is located on both sides of the groove (8), the welding base (1) is provided with a counterbore (3) at the bottom, the counterbore (3) is communicated with the first through hole (2), the pressing plate upper cover (4) is provided with a second through hole (5) in the center, the pressing plate upper cover (4) is provided with a third through hole (6).
2. The tooling for welding a light window to a porcelain body of claim 1, wherein: The welding base (1), the pressing plate upper cover (4) and the pressing block core (7) are all made of high-density graphite material.
3. The tooling for welding a light window to a porcelain body of claim 2, wherein: The first through hole (2) is matched with the third through hole (6).