Anisotropic Conductive Tape Cutting for Uniform Adhesion Length
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Solution Overview
Problem
Conventional tape adhering apparatuses face challenges in accurately cutting anisotropic conductive tape to a predetermined length due to friction and tension fluctuations, resulting in errors of about 0.05 to 0.1 mm, leading to inconsistent tape lengths on the workpiece.
Innovation Solution
A tape adhering apparatus with a cutting unit that includes a downstream and upstream cutting blade, held at a predetermined length, and a conveying unit that intermittently conveys the tape member by adding a gap length, ensuring the anisotropic conductive tape is cut uniformly to the desired length, with a tape removing unit to manage the gap length.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the tape member is moved with respect to the cutter to obtain a predetermined length, then the cutting operation can be performed, but the length accuracy deteriorates due to friction and tension fluctuations causing errors of 0.05 to 0.1 mm
Solution Approach 1:
Instead of moving the tape member with respect to the cutter, the invention inverts the approach by moving the cutter with respect to the tape member. The blade holding unit moves the cutting blades toward the tape member to perform cutting, while the tape member remains stationary or is conveyed intermittently. This inversion eliminates the accuracy deterioration caused by friction and tension fluctuations during tape movement, as the cutting action occurs when the tape is stationary at precise positions.
2Productivity
If the tape member is moved during cutting, then the cutting process can proceed, but the consistency of tape length deteriorates due to operational errors
Solution Approach 1:
The invention employs periodic action by intermittently conveying the tape member and performing cutting operations at discrete, periodic intervals. The conveying unit moves the tape member by a predetermined distance ( predetermined length + gap length), stops, and then the cutting unit performs the cutting operation. This periodic cycle of conveyance and cutting ensures that each tape segment is cut at consistent, uniform lengths without the variability introduced by continuous movement.
3Productivity
If the conveying unit continuously moves the tape member, then productivity is improved, but the cutting precision deteriorates due to motion-induced errors
Solution Approach 1:
The invention segments the continuous conveying and cutting process into discrete, separate phases. The conveying unit moves the tape member intermittently in discrete steps of predetermined distance, stops completely, and then the cutting unit performs the cutting operation. This segmentation allows the tape to be positioned accurately at each cutting location without motion-induced errors, while still maintaining overall productivity through the repetitive cycle of conveyance and cutting.
Data Source
AI summary
A tape adhering apparatus is provided for attaching an anisotropic conductive tape to a workpiece with uniform length. In the tape adhering apparatus (1), a a conveying unit (30) intermittently performs an operation of conveying a tape member (T) by a length obtained by adding a gap length (L2) to a predetermined length (L1), and a cutting unit (10) includes a blade holding unit (12) that holds a downstream cutting blade (13) and an upstream cutting blade (14) in a state where the length from the downstream cutting blade (13) to the upstream cutting blade (14) is the predetermined length (L1), and advances toward an anisotropic conductive tape (t1) to cut the anisotropic conductive tape (t1) into the predetermined length (L1) when the conveying unit (30) stops the operation of conveying the tape member (T).