Evaluation of the cardboard sheet behavior in pulling the pressure cylinder. Scientific Papers. Ukrainian Academy of Printing

Author(s)	Collection number	Pages	Download abstract	Download full text
Ternytskyi S. V., Vatuliak Yu. V., Kandiak N. M.	№ 1 (60)	108-114

Summary
References

The article presents the advantages of flat-cylinder presses. The work of such presses is based on the principle of minimizing of contacting surfaces, which make them universal in terms of changing of the thickness and format of the cardboard sheets, prompt readjustment to another type of packaging. For the stable flat-cylinder presses functioning, technical problems need to be solved: to ensure even movement of the pressure means during the die-cutting process, to minimize the negative impact of inertial loads due to the deceleration and acceleration of the pressure means in the extreme positions, to provide shortening, fixing and the output of the die-cut sheet.

The article shows the analysis of forces effects on a freely placed cardboard sheet on the fixed die-cutting forme during the movement of pressure cylinder. With the aim to determine the need of additional gripping or clamping mechanisms during the cardboard packaging manufacture on flat-cylindrical die-cutting presses with fixed form, analytical researches of forces have been made in zone of contact between cardboard sheet and cylinder. The analytical dependencies of component forces that arise during the process of die-cutting of the cardboard packaging on flat-cylinder presses with a movable pressure cylinder are presented. It is established that the value of the total clamping force depends on the specific operating conditions of the equipment. The article shows an analytical dependency of the effort that provide sufficient fixation of cardboard sheet on a flat die-cutting forme in flat-cylinder presses. It is found that the value of the total vertical force is most significantly influenced by the angle of onset of contact of the pressure cylinder with a sheet of cardboard. The increase of cardboard sheet thickness and decrease of the pressure cylinder radius cause the increase of needed vertical force.

Keywords: effort, flat-cylinder press, cardboard, packaging, die cutting forme.

doi: 10.32403/1998-6912-2020-1-60-108-114

1. Rehei, I. I. (2011). Spozhyvche kartonne pakovannia (materialy, proektuvannia, obladnannia dlia vyhotovlennia). Lviv : UAD (in Ukrainian).
2. Volchko, A. A., & Havva, O. M. (2002). Prystroi dlia formuvannia kartonnykh pachok: Upakovka, 5, 36–38 (in Ukrainian).
3. Arabskyi, R. S., & Arabskyi, Yu. S. (1996). Shtampy dlia vysikannia kartonnykh upakovok. Lviv (in Ukrainian).
4. Emblem, A., & Emblem, H. (2012). Packaging Technology: Fundamentals, Materials and Processes. Oxford : Woodhead Publishing Ltd (in English).
5. Khvedchyn, Yu. Y., & Zelenyi, V. V. (2014). Analiz mekhanizmiv presa shtantsiuvalnykh avtomativ: Naukovi zapysky [Ukrainskoi akademii drukarstva], 4 (49), 21–30 (in Ukrainian).
6. Rehei, I. I., & Kereia, V. M. (2015). Mekhanizm pryvoda presa shtantsiuvalnoi mashyny-avtomata: Upakovka, 1, 62–63 (in Ukrainian).
7. Fan, Feiran, & Ding, Huiyao. (2010). The research and the application for the rotary die-cutting machine drive technology. 2010 International Conference on Mechanic Automation and Control Engineering. Wuhan, 5914–5917 (in English).
8. Chekhman, Ya. I., Tkach, S. V., & Kravchuk, I. M. (2003). Osoblyvosti vyznachennia zusyl pry vysikanni kartonu na ploskotsylindrovomu presi: Naukovi zapysky [Ukrainskoi akademii drukarstva], 6, 21–24 (in Ukrainian).
9. Ternytskyi, S. V. (2012). Otsinka maksymalnoho krutnoho momentu v shtantsiuvalnomu presi ploskotsylindrovoho typu dlia vyhotovlennia rozghortok kartonnykh pakovan: Polihrafiia i vydavnycha sprava, 1, 80–89 (in Ukrainian).
10. Vatuliak, Yu. V., Shustykevych, A. I., & Ternytskyi, S. V. (2019). Konstruktyvni osoblyvosti instrumenta dlia poperechnoho bihuvannia kartonu: Naukovi zapysky [Ukrainskoi akademii drukarstva], 2 (78), 11–15 (in Ukrainian).
11. Rehei, I. I., Fedyshyn, R. I., & Ternytskyi, S. V. (2008). Zasoby shtantsiuvannia kartonu (obgruntuvannia konstruktyvnykh osoblyvostei ta tekhnichnykh parametriv): Upakovka, 6, 29–31 (in Ukrainian).
12. Rehei, I. I., Fedyshyn, R. I., & Ternytskyi, S. V. (2009). Zasoby shtantsiuvannia kartonu (obgruntuvannia konstruktyvnykh osoblyvostei ta tekhnichnykh parametriv): Upakovka, 1, 37–38 (in Ukrainian).