Closing, filling, holding, cooling, opening, stripping… In the application of injection molding is very common today, the automation of injection molding process has also become the mainstream. Among them, the injection molding machine manipulator is playing an increasingly important role because it can greatly improve productivity and reduce production costs, stabilize and improve the quality of injection molding products, and avoid losses caused by human error.

As the value leader and innovator of China’s industrial robot solutions, Ningbo Weili Robot Technology Co., Ltd. integrates robot research and development, manufacturing and sales. In recent years, Ningbo Weili has grown into a leading robot automation equipment production and research enterprise in China, focusing on the automation system of injection molding machine. In order to create a safer high-end injection molding machine robot solution, especially actively explore the international market, Ningbo Weili and international safety automation expert Pilz company, thereby helping to achieve the company’s sustainable development.

Safety requirements of injection molding machine manipulators

Ningbo Weili supporting injection molding machine truss manipulator products, is a kind of automatic industrial equipment based on the right Angle X, Y, Z coordinate system, to adjust the work position, or to achieve the trajectory movement of the workpiece and other functions, mainly to achieve the injection process to take out the mold products, or mold products and other basic actions, high-speed and stable, cost-effective, Has been favored by injection molding machine industry customers.

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Obviously, the high-speed movement of the truss manipulator within a certain range will inevitably bring a certain risk of collision or injury to the equipment, especially the field operator, and it is necessary to increase the safety door switch. At the same time, in order to meet the requirements of UL\CE safety regulations for exports to Europe and the United States, Ningbo Weali must also consider the use of certain safety automation products to achieve the corresponding safety level PLd to obtain compliance permits, including issues such as multiple safety emergency stops requiring dual channel stop, multiple safety door switch monitoring, and meeting safety loop requirements.

Safety solutions from Pierre Magnet

Our team of safety experts first carried out the corresponding risk identification/risk assessment of the injection molding machine truss manipulator, dividing the types of injuries that can be prevented through effective defense into 3 categories:

(1) Impact, collision or robot impact

(2) The body part is squeezed by the peripheral equipment of the manipulator

(3) Impact, collision, impact of parts or terminal execution devices due to mechanical failure

Our safety solutions refer to common industry standards ANSI/RIA R15.06-1999 and ANSI B151.27-1994, as well as ISO13849-1 and robotics industry standards, from relevant documentation and certified safety products to the extensive safety certification experience of our expert team. All these provide great help for the robot to quickly pass the export safety certification.

The PNOZ mm0.1p is a compact configurable safety controller for the device, up to the PLe requirements of EN ISO 13849-1, depending on the wiring, which can be connected to all common communication systems and can be configured for use with a variety of different operational control systems.

In the scheme design, the emergency stop, safety door switch and grating of the equipment are entered into PNOZ mm0.1p by dual-channel input, and redundant output is carried out to avoid safety failure. In addition, due to the compact design of the PNOZ mm0.1p, it helps the robot to save space in the control cabinet, and the text on the built-in display helps in rapid diagnosis and fault analysis, so as to better meet the customer’s requirements for dual-channel stop, safety door switch monitoring and meet the safety loop.