Central mold storage

Different molds are often operated on one manufacturing unit, since the demand for parts does not use the full capacity of the machine. Thus, for the production, there is the decision to disarm the moid after the production order and then to transport it into central mold storage (Figure 5.43) or to keep it iocaiiy at the production line. In the latter case, the inspection must then be carried out in the production. 

Cost optimization demands a rethinking of the central mold storage. The result of an internal setup workshop may not always result in a reduction in setup times when the molds are stored on the machine. So it may be that the optimal production batch is a daily production of only a few hours. Therefore, it makes sense to store the molds at the production machines. In future mold management, the production site will be increasingly used as storage space. 

A central mold store allows heavy duty shelving in a small space and takes and up the vast majority of molds. Here, a computer-assisted storage location management is possible. 

Only small amounts, 200 to 300 ppm, of an antioxidant such as 2,6-di-t-butyl-4-methyl phenol (DBP) can be sufficient to stabilize polyoxypropylene during storage (143). However, when products are manufactured from polyoxypropylene polyols, high temperatures for prolonged times can be encountered. For elastomers and molded flexible foam products where temperature build and maintenance is not a problem, 500 to 1200 ppm DBP will usually suffice as a stabilizer. However, in slab-stock foam that is produced in bun form, temperatures in the central... 

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