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Henry Prasetyo
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Computer Science & IT Electrical & Electronics Engineering Energy Engineering

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Rancang Bangun Sistem Kontrol Elektro Pneumatik Pada Alat Bantu Pemotong Green stick tube Henry Prasetyo; Arif Cahyono, M. Ridwan; Syifa Amalia Azzahra Putri Wardoyo; Susilawati, Dera
Jurnal Instrumentasi dan Teknologi Informasi (JITI) Vol. 6 No. 2 (2025): Mei
Publisher : Prodi D3 Teknik Elektronika Politeknik Gajah Tunggal

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The current process for cutting green stick tubes at the company is still done manually by operators using scissors because the extruder machine cannot cut sizes below 1,000 mm. As a result, sizes 6.00-9 and 6.50-10 must be cut manually before the splicing process. The green stick tubes coming out of the extruder often exceed the splicing machine’s cutting tolerance of 20 mm. According to the data, sizes 6.00-9 and 6.50-10 with a length of 1010 mm need to be cut to 840 mm and 910 mm, respectively. The average cutting time per shift is 164.6 seconds, influenced by the time operators take to find scissors and the lack of efficient cutting tools. The main issues in this cutting process are caused by three factors: Machine, Material, and Man. The extruder machine cannot cut green stick tubes smaller than 1,000 mm. The green stick tube material of sizes 6.00-9 and 6.50-10 needs to be cut because their length exceeds the requirement. Additionally, inconsistencies among operators when cutting occur due to the lack of proper tools or guides. To address these issues, a cutting aid tool using a heater and pneumatic system is designed. This tool is expected to facilitate the cutting process of green stick tubes. The design of this tool aims to overcome the extruder machine’s inability to cut smaller sizes, reduce unnecessary additional time, ease the cutting process for operators, decrease the variation in cutting time, and improve the workflow in the splicing section, so the green stick tubes can be processed directly without additional hindrances.
Modifikasi Sistem Automatic Pressure Roll Menggunakan Integrasi Antara Push button, Sensor Distance, Dan PLC Untuk Menurunkan Scrap Ex- Return Bias Cutting Di PT. ABC Henry Prasetyo; Tita Latifah Ahmad; Raina Putri Ramandha
Jurnal Instrumentasi dan Teknologi Informasi (JITI) Vol. 7 No. 2 (2026): Mei
Publisher : Prodi D3 Teknik Elektronika Politeknik Gajah Tunggal

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The high number of cross-folded scraps in the Bias Cutting process at PT. ABC is a major issue that affects both the efficiency and quality of motorcycle tire production. The main cause lies in inappropriate pressure settings that do not match the treatment thickness and the absence of an automatic pressure reduction system as the roll diameter decreases. This research aims to modify the automatic pressure roll system by integrating push buttons, distance sensors, and a Mitsubishi PLC to automatically, stably, and securely regulate pressure. The method includes field observation, control system design, PLC programming, and pre- and post-modification data analysis. The results show that the system successfully adjusts the pressure based on treatment thickness via push buttons and gradually reduces pressure using signals from the distance sensor. This implementation achieved a scrap reduction of 68.51%, saved production costs up to Rp 427,741,879.5, and produced a benefitcostratio of 44.37 with a payback period of only 8.11 days. These results confirm that the system modification effectively enhances the quality and efficiency of the production process.
Co-Authors Arif Cahyono, M. Ridwan Raina Putri Ramandha Susilawati, Dera Syifa Amalia Azzahra Putri Wardoyo Tita Latifah Ahmad