Wire Clamp Assembly Geometry for Stable Multi-Angle Bonding
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Solution Overview
Problem
Existing wire bonding apparatuses face challenges in suppressing the swinging movement of wires, which affects the accuracy and reliability of the bonding process, leading to reduced yield and increased complexity in bonding at various angles.
Innovation Solution
A wire bonding apparatus is designed with a capillary, wire clamp assembly, and support system that includes tilting members and contact members, allowing for precise control and stabilization of the wire through a combination of acute angles and movable components to prevent unwanted movement, coupled with a driver mechanism for efficient wire alignment and bonding at different angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a wire bonding apparatus uses a traditional wire clamp assembly, then the structure is simple, but the wire swinging movement cannot be suppressed effectively
Solution Approach 1:
The wire clamp assembly is divided into multiple independent members (first member, second member, third member) that can move relative to each other. Each member has specific contact members that can independently apply clamping force to different portions of the wire, allowing precise control over wire positioning and suppression of swinging movement without requiring a completely complex assembly structure.
Solution Approach 2:
The wire clamp assembly incorporates movable members that can dynamically adjust their positions during the wire bonding process. The second member is movable relative to the first member, and the third member is movable relative to the second member, enabling real-time adaptation to wire position variations and effective suppression of wire swinging while maintaining operational simplicity.
2Manufacturing precision
If the wire clamp assembly uses fixed contact members, then the structure is simple, but wire stability at various angles is poor
Solution Approach 1:
Different contact members are positioned at different locations and orientations within the wire clamp assembly. The first contact member, second contact member, and third contact member are arranged to contact the wire at different points and angles, providing localized precision control for wires approaching from various directions without requiring a uniformly complex structure throughout the assembly.
Solution Approach 2:
The wire clamp assembly extends in multiple directions (first direction, second direction, third direction) to accommodate wires at various angles. The contact members are distributed in three-dimensional space, allowing the assembly to maintain wire stability regardless of the wire's approach angle, effectively adding dimensional capability without excessive complexity.
3Reliability
If the wire clamp assembly allows free movement, then ease of operation is high, but wire swinging cannot be controlled
Solution Approach 1:
The wire clamp assembly is designed to apply preliminary clamping action through the contact members before wire bonding begins. The movable members are positioned and configured to preemptively counteract any swinging movement that might occur during the bonding process, ensuring wire stability is established in advance rather than reacting to swinging after it occurs.
Solution Approach 2:
The movable members in the wire clamp assembly provide mechanical feedback by naturally responding to wire position variations. As the wire is fed through the capillary, any deviation in position causes corresponding movement in the movable members, which automatically adjusts the clamping force to maintain wire stability, creating a self-regulating system that is both reliable and easy to operate.
Data Source
AI summary
A wire bonding includes a capillary that extrudes a wire; a wire clamp assembly disposed on the capillary; a support disposed on the wire clamp assembly; a wire contact member; and a slide rail that provides a slide hole. The wire clamp assembly includes: a first member; a second member spaced apart from the first member; a first contact member coupled to the first member; and a second contact member coupled to the second member and spaced apart from the first contact member. The first member includes a first body that extends in a first direction and a first tilting member that extends at an acute angle relative to the first direction. The second member includes a second body that extends in the first direction and is spaced apart from the first body in a second direction a second tilting member.