• Title/Summary/Keyword: Flexible Flat Cable

Search Result 4, Processing Time 0.019 seconds

Temperature Control Improvement of Pressure Heating Roller for Flexible Flat Cable Production (Flexible Flat Cable 생산성 향상을 위한 가압용 히팅롤러의 온도제어개선)

  • Kim Jae Hak;Lee Ho Jung;Chun Keyoung Jin
    • Journal of the Korean Society for Precision Engineering
    • /
    • v.22 no.7 s.172
    • /
    • pp.155-163
    • /
    • 2005
  • Pressure heating rollers with temperature control were mounted to a flat cable laminating machine (FCLM). Pressure heating rollers should be heated up to the setting temperature $(175^{\circ}C)$ and kept on to producing good quality flexible flat cables (FFC). Existing Pressure heating rollers took more than 70minutes to the setting temperature and did not keep on the setting temperature in production. Temperature controller, electric power controller, material and diameter of rollers and heat capacities were changed to improve the temperature control of the pressure heat rollers for better production of the FFC. Thus, the reaching time to the setting temperature (RT), temperature stability time (TST) and temperature hunting (TH) were measured and compared with the existing pressure rollers case. The RT of A roller was shortened by 50minutes, and B roller was shortened by 15minutes. The TST of A roller was shortened by 13minutes, and B roller was shortened by 15minutes. The THs of both A and B rollers were settled up to ${\pm}5^{\circ}C$. Finally, the productivity of the FCLM and the quality of the FFC were increased.

Structural Analysis of Tension Controller Spring (텐션 컨트롤러 스프링의 구조해석)

  • Lee, Jong-Sun;Baik, Doo-Sung
    • Journal of the Korea Academia-Industrial cooperation Society
    • /
    • v.10 no.1
    • /
    • pp.1-5
    • /
    • 2009
  • In this research, structural analysis was conducted by applying ANSYS commercial code in order to evaluate deflection quantitatively when each weight of tension controllers was centered and weights and moments on a controller controlling tension amounts was varied in a machinery manufacturing flexible flat cable. Based on the numerical structure analysis, stress, strain and amounts of maximum deformation were obtained and investigated structural validity and was reflected on design of the controller.

A Development of High-Durability Copper Foil Materials for Clock Spring Cable Using Grain Size Control Techniques (결정립 제어 기술을 이용한 클락스프링 케이블용 고내구 동박 소재 개발)

  • Chae, Eul Yong;Lee, Ho Seung
    • Journal of Auto-vehicle Safety Association
    • /
    • v.13 no.3
    • /
    • pp.20-25
    • /
    • 2021
  • Flexural resistance evaluation of FFC (Flexible Flat Cable) was performed according to the grain size of rolled copper foil by adding 0.1wt% silver (Ag) and electrodeposited copper foil by slitting method after heat-treatment. These methods are aimed at enhancing the flexural durability of the FFC by growing the grain size of copper foil. By increasing the grain size of the copper foil and minimizing the miss-orientation at grain boundaries, the residual stress at the grain boundaries of the copper foil is reduced and the durability of the FFC is improved. Maximizing an average grain size of copper foil can be got a good solution in order to enhance the durability of the FFC or FPCB (Flexible Printed Circuit Board).

Spiral Coil Magnetostrictive Strip Transducers for Long Range Ultrasonic Testing of Cylindrical Structures (실린더형 구조물의 원거리 초음파검사용 나선형 코일 자왜 스트립 변환기)

  • Heo, Won-Nyoung;Choi, Myoung-Seon
    • Journal of the Korean Society for Nondestructive Testing
    • /
    • v.28 no.5
    • /
    • pp.416-420
    • /
    • 2008
  • In EMAT field, spiral RF coils are much more widely used when compared with solenoid coils. In the field of the magnetostrictive strip transducers for long range ultrasonic testing of cylindrical structures, however, solenoid coils has been used. This seems to be attributed to the difficulty in fabricating low frequency (i.e., large size) spiral coils. In this paper, we describe a method for fabricating spiral coil magnetostrictive strip guided wave transducers from FFC (flexible flat cable). It is demonstrated through a comparison experiment that the spiral coil transducer has much superior performance (sensitivity, SNR, and guided wave direction control capability) than the previous transducer with solenoid coils.