An adjustable parallel seam welding fixture for surface mount ceramic shell

Abstract

The invention belongs to the technical field of semiconductor package manufacturing, the invention relates to an adjustable parallel seam welding fixture of a surface mount ceramic shell, characterized by, includes a base for placing a ceramic housing and four adjustable fixing blocks and spring fixing assemblies for fixing the ceramic housing, Four adjustable fixing blocks are evenly distributedon the base, wherein three adjustable fixing blocks are slidable on the base, and the other adjustable fixing block is fixed with a spring fixing assembly, wherein the spring fixing assembly is elastically matched with the base; As that adjustable parallel seam weld fixture of the invention can realize the loading and fix of the surface mount ceramic shell with different external dimensions, the packaging is ensured to proceed smoothly, and the production cost is reduce.

Description

technical field [0001] The invention relates to a parallel seam welding jig, in particular to an adjustable parallel seam welding jig for a surface-mounted ceramic shell, belonging to the technical field of semiconductor packaging and manufacturing. Background technique [0002] Ceramic package shells are mainly used in high-reliability military aerospace and other fields. Surface mount ceramic shells such as CLCC / CLGA have the advantages of high board-level installation reliability and have been widely used. [0003] At present, the use of parallel seam welding machines for airtight welding of circuits to be packaged is to customize parallel seam welding fixtures for various types and sizes of shells. Now there are various types of circuits to be packaged, and the sizes of shells or substrates are also very large. If you want to customize parallel seam welding fixtures for each type of package and each size of shell, it will increase the design time, processing costs, and i...

AI Technical Summary

Problems solved by technology

[0005] 1. Customers have high seam welding quality requirements for packaged products, and when the schedule demand cycle is short, due to the lack of suitable parallel seam welding fixtures, it is often prone to poor sealing accuracy and discontinuous welding, which cannot meet the accuracy index requirements, such as temporary design Customized processing, parallel seam welding fixtures have a long processing cycle and high costs, which will inevitably affect the customer's progress and increase the cost

[0006] 2. The outer dimension of the ceramic shell has a large deviation, and the clamping position size of the custom-processed fixture will be too tight or loose, resulting in the shell not being put in, or the sealing accuracy is poor due to the large deviation after the shell is put in.

[0007] 3. At present, many varieties of parallel seam welding fixtures have been processed and stored in tooling cabinets. In addition to increasing the number and cost of tooling cabinets, tooling cabinets also occupy space in the production site of the clean room, making the production site crowded. Conducive to on-site purification management

[0008] 4. A large number of parallel seam welding fixtures also increase maintenance and maintenance costs

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