FAUZI, KHOIRUL (2025) OPTIMALISASI AIR BLISTER PRICKING UNIT MESIN TOPPING CALENDER. S1 thesis, Universitas Mercu Buana Jakarta.
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Abstract
In tire manufacturing, the stability of pneumatic systems is a key factor affecting product quality. One critical unit is the air blister pricking unit on the topping calender machine, which functions to remove trapped air within the carcass layer. The existing system relied on a single central regulator to distribute pressure to eight cylinders, resulting in pressure imbalance, uneven pricking blade wear, and a high rate of defective products. This study aims to optimize pressure distribution by replacing the air supply line diameter from 4 mm to 6 mm and installing individual regulators for each cylinder. An applied quantitative experimental method was employed using a onegroup pretest–posttest design, in which the system was tested before and after modification. The results indicate a 46% reduction in pressure drop, uniform pressure at 2 bar, an increase in blade lifetime from 20 to 74 days, and a 51.7% reduction in defective products. These findings demonstrate that individual pressure regulation is effective in improving system efficiency, component lifespan, and product quality consistency. Future work is recommended to evaluate the effect of different pipe materials and configurations, conduct long-term durability testing, and integrate digital sensor-based pressure monitoring to enhance system reliability and scalability for larger production lines. Keywords: pneumatic system, pressure drop, individual regulator, blade lifespan, open cord Dalam industri manufaktur ban, kestabilan sistem pneumatik merupakan faktor penting yang memengaruhi kualitas hasil produksi. Salah satu unit penting adalah air blister pricking unit pada mesin topping calender yang berfungsi menghilangkan udara terperangkap dalam lapisan carcass. Sistem ini sebelumnya menggunakan satu regulator pusat untuk mendistribusikan tekanan ke delapan silinder, sehingga terjadi ketidakseimbangan tekanan, keausan pisau yang tidak merata, dan tingginya tingkat produk gagal. Penelitian ini bertujuan mengoptimalkan distribusi tekanan dengan mengganti diameter saluran udara dari 4 mm menjadi 6 mm serta menambahkan regulator individual pada setiap silinder. Metode kuantitatif eksperimental digunakan dengan desain one group pretest-posttest, di mana sistem diuji sebelum dan sesudah modifikasi. Hasil menunjukkan bahwa pressure drop menurun hingga 46%, tekanan menjadi seragam di 2 bar, masa pakai pisau meningkat dari 20 menjadi 74 hari, dan produk gagal menurun sebesar 51,7%. Temuan ini menunjukkan bahwa pengaturan tekanan individual efektif dalam meningkatkan efisiensi sistem, umur komponen, dan kualitas produk. Penelitian selanjutnya disarankan untuk mengevaluasi variasi material dan konfigurasi jalur pipa, menguji ketahanan sistem dalam jangka panjang, serta mengintegrasikan pemantauan tekanan berbasis sensor digital guna meningkatkan keandalan dan penerapan metode ini pada skala produksi yang lebih besar. Kata Kunci: sistem pneumatik, pressure drop, regulator individual, keausan pisau, kegagalan produk
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