Hot runner maintain and storage
Date:2011-12-15
Hot runner maintain and storage
The cost of hot runner mould is very expensive, so a better maintain and storage is the guarantee of developing mould working life.
1. Maintain: the hot runner maintenance staff should conduct technical training and understand hot runner system working principle. In the meantime, they should know hot runner structure very well. Maintenance important points are as follows:
(1). Protect the lead tip of nozzle top and heater. Because keep them out and easy to damage.
(2). With low temperature heat the hot runner system and then separate manifold and nozzles.
(3). We can’t use hard tools to shaving remnants of plastic
(4). We can’t use fire to separate heater.
(5). Renew the seals after separating. It is better to use seals made by stainless steel between manifold and nozzles, and replace the mould every year. We should replace the seals frequently if we choose bronze solid material. Because it can be clamped only once,
(6). We can’t use homemade and replace the damaged spare parts separated from hot runner system such as sprue bush and ejector pin.
(7). The pump and connections of cooling system should clean every year.
2. Storage:
(1). We should keep the mould ‘s manufacture, use, maintain and storage information for hot runner injection mould.
(2). The storage mould should put in a condition which can involve to production anytime.
(3). The heating elements of hot runner mould is easy from getting wet, so we should dry it before storage.
(4). Stored in wooden shelf in drying room.
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