Into the supermarket, a dazzling array of yogurt, beverage packaging is dazzling, from the joint cup to the pre-made cup to the bottle, a variety of groups of cardboard packaging form is beautiful and environmentally friendly, so it has been more and more widely used.

As a leading packaging enterprise in China, Hangzhou Zhongya Machinery Co., LTD. (hereinafter referred to as Zhongya) is a manufacturer of intelligent packaging equipment for liquid products integrating research and development, manufacturing and sales. It is also a national key high-tech enterprise, mainly providing filling and sealing equipment for all kinds of liquid products, intelligent packaging equipment and hollow container blow molding equipment. At the same time, we also provide customers with packaging production line design and planning, engineering installation, equipment life cycle maintenance, plastic packaging products supporting supply and other comprehensive solutions, its products have been widely used in dairy, beverage, edible fat, condiment, daily chemical and other industries.

In order to meet the increasing safety requirements of international customers for packaging equipment and enhance the core competitiveness of equipment, Central Asia has adopted the safety system solutions of Pilz, an international safety automation expert, on a series of high-speed intelligent back-channel packaging equipment, which well meets the needs of middle and high-end customers.

Safety risks of high speed wrapping equipment

High-speed intelligent sleeve wrapping equipment is one of the core products of Central Asia company, which is mainly suitable for the back-channel packaging of combined cup products, prefabricated cup products and bottled products, and automatically complete the cardboard picking, product grouping, cardboard and product synchronous transportation, cardboard and product positioning, folding, spraying glue, back cover and output. Due to its stable performance, simple operation and easy maintenance, this kind of equipment has a high cost performance, and is favored by many international customers in the fields of candy, dairy products, drinks and so on.
During the operation of the production line of high-speed wrapping equipment with processing capacity of up to tens of thousands of cups per hour, a large number of mechanical parts are involved in the movement of cardboard conveying, positioning, flanging and robot packaging, which are generally equipped with multiple protective doors. In the entire packaging operation, due to the inevitable deformation of the carton, product slip and leakage of packaging and other conditions affecting the quality of packaging, it is necessary to manually open the protective door for operation intervention, at this time how to evaluate the potential risk of personal injury and carry out a certain level of safety protection is extremely necessary. It is also a key requirement for middle and high-end packaging end customers in Central Asia.

In terms of high-speed intelligent sleeve packaging equipment, each device has about 13 security doors, and it is necessary to understand the opening state of each security door through the security system, and hope that each security door switch is

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not easily bypassed and shielded, then each security door switch must have an independent code to meet the necessary security requirements.

Perfect combination of safety controller and safety door switch

By identifying and assessing the risks associated with backchannel packaging equipment in Central Asia, based on the requirements of customers in Central Asia for international safety standards, and considering the cost of safety systems, the company has provided Central Asia with a cost-effective combination of configurable small safety controller PNOZ m B0 and PSENslock safety door switch

Among them, the PSENslock safety door switch of Pierre magnetic has an independent and unique code with a safety chip, completely avoiding the by-pass caused by replacement switch components, equivalent to 13 doors have the corresponding safety circuit protection, and will not be affected by the opening and closing of other doors, because of this, 13 safety code switches can each independently access the security controller. It is also possible to enter a safety relay in series without lowering the PL level. It can provide customers with multiple needs of safety, reliability and cost control.

At the same time, in the system design, the original plan of Central Asia is configured with two safety relays connecting the emergency stop button and the series safety door switch for each device, and then the status auxiliary signal of each safety door switch needs to be separately sent to the upper PLC; By using the PNOZ mB0 programmable safety controller, the status of the safety door switch can be directly sent to the upper PLC by the safety controller through communication, which greatly reduces the wiring workload of the safety door switch, saves a certain cost, and improves the system convenience.

In general, the PNOZ mB0 small safety controller +PSENslock safety door switch scheme provided by Pielmagneto for Central Asia not only can prevent the accidental opening of protective equipment to achieve safety protection, but also has a flexible design and a higher cost performance, and a simpler and more effective system structure, so as to help customers build a safety barrier for high-speed packaging equipment in the back road.