Injection molding machine mechanical hazardous is Non Woven PP insurance and prevention

Date:2022-7-19 Author:Sam

Mechanical hazard: It mainly comes from motion components, including squeezing, shearing or twisted danger caused by motion axes and transmission mechanisms. It is recommended to use a fixed or mobile cover to prevent personnel from approaching the dangerous areas. \u0026 Nbsp;

\u0026 nbsp; \u0026 nbsp; \u0026 nbsp; \u0026 nbsp; injection molding machine should consider: \u0026 nbsp;

1. Yuan Device requirements: The control circuit related to security functions must use mature components in the process of design, selection, and assembly, that is, it has been widely used in similar application fields, or it is manufactured according to reliable security standards. Components, as well as mature technology. Safety control circuits should be able to withstand the expected operating intensity and be able to withstand the impact of working medium during operation and the effect of related external environments. Using mature technical components, that is, have been widely used in similar applications, or components manufactured according to reliable security standards, and mature technology. When designing the circuit, the extremely safe and reliable component should be adopted, and the possibility of the failure of this component itself can be considered. At the same time, in order to avoid short circuits, reduce the incidence of faults, determine the type of failure, accurately detect failure and avoid the occurrence of secondary faults, you can use: isolation circuit, fully loading capacity, and turn on power in time when the failure is encountered. Good grounding measures. \u0026 nbsp;

2. Machine safety stop requirements: The safety protection of the machine and equipment is to stop the dangerous movements of the machine and equipment. It is very important to how to put the machine equipment from running to stop. Depending on the different safety protection devices used, different safety stop function can be available. The stop function used in normal operation must be able to avoid being destroyed by the machine, equipment, products, and processing processes, and at the same time to prevent the reorganization of the machine and equipment. This is the requirements for the safe stop function. \u0026 nbsp;

\u0026 nbsp; \u0026 nbsp; \u0026 nbsp; \u0026 nbsp; in section 9.2.2 of EN \u0026 Nbsp; 60204-1 standard, three types of stop categories are specified: spinning machine \u0026 nbsp; [123 ]-\u0026 nbsp; Stop Category 0: To immediately cut off the power supply of the supply of the machine equipment, it is to stop being controlled.
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-\u0026 nbsp; Stop Category 1: Stop controlled by control, the power supply of the supply and equipment execution agency has been maintained, so that the machine equipment is stopped. The power supply is only cut off when the machine is completely stopped. \u0026 nbsp;

-\u0026 nbsp; Stop Category 2: The control of the control device is kept. \u0026 nbsp;

\u0026 nbsp; \u0026 nbsp; \u0026 nbsp; \u0026 nbsp; correctly stopThe choice of categories must be based on the risk analysis of the machine and equipment, which is stipulated in the pren \u0026 nbsp; 954-1: 1994 standard. \u0026 nbsp;

\u0026 nbsp; \u0026 nbsp; \u0026 nbsp; \u0026 nbsp; All machines and equipment must have a stop function of stopping category 0. The stop function of stopped category 1 and/or 2 can only be used when the safety and functional requirements of the machine and equipment are necessary. \u0026 nbsp;

3. The use of both hands control device: In many highly dangerous machines and equipment, such as forging devices, punching equipment, etc., both hands control devices. The two -handed control device belongs to the electronic -based safety protection device. The role is to force it to use the hands at the same time when someone operates the machine equipment and gives the machine equipment at the same time, so that it must stay in one place, which can ensure safety. \u0026 nbsp;

4. Safe distance solution: \u0026 nbsp;
A available safety door switch lock, electrical -based safety protection device, safe carpet and two -handed controller, etc. In the safety protection of machinery and equipment, in addition to using safe and reliable protection elements, for very dangerous machines and equipment, it is also necessary to make certain requirements for its safety protection control circuit to improve the level of safety protection, such as safety monitoring

5. The use of safe carpets in the safety protection of machinery and equipment. In some occasions, safety fences and safety protection doors cannot be safely protected in dangerous areas. Among them, it is often necessary to maintain and adjust the machine. At this time, the machine cannot be started outside the outside. In this case, it is obviously unable to use the security protection door. In addition, in some occasions that need and can use safety protection doors, for convenience and aesthetic considerations, they may also be unwilling to adopt a safety protection door. In the above two cases, in order to achieve safety protection for dangerous areas, contact -type safety protection devices can be used. In this type of safety protection device, safety carpets are very distinctive and are also very widely used.