Matters to be Considered in Mold Manufacturing
Mold Set Selection: The raw material of the steel that the mold will be processed should be suitable for the product to be produced. If wear is foreseen in the working area due to the product geometry; The core part must be of qualified steel. Otherwise, the life of the mold will be short, the desired product cannot be mass-produced.
Design: Die parting line should be selected in the appropriate position. While designing; If there will be moving parts, called cores, in the mold, these parts should be positioned in a way that does not prevent the plastic injection machine from working. The parts that the ejector pins will touch, the angles of the product coming out of the ejector part of the mold, and the lapping spaces should be handled with precision in the design.
Flow Analysis: Before the mold is produced, the final point of the molten plastic, the amount of density, and the cooling cycle times should be analyzed absolutely.
Surface treatment: Depending on whether the product surface that will come out of the mold is matte, glossy, or patterned, surface treatment should be performed with the right equipment.
Mold Polishing: The mold whose surface will be polished should be polished with an appropriate method, considering its material and cost, and tool marks should be removed.
Considerations for Reducing Losses During Injection Molding
Thanks to the molding system, plastic production is made easier. The injection molding system is very important. Material selection is very important when making a molding system. Losses during an injection can be easily avoided. Even if the losses occur during injection molding, deviations occur. Many factors are involved in the occurrence of losses. Material selection should be done properly to reduce losses. Machine choice is also very important for mold injection. If attention is paid to such points, energy losses will also be minimized. At the same time, this arrangement will prevent many shortcomings.
How is Mold Injection Forming Made?
John Wesley was instrumental in creating injection mold design many years ago. Injection molding works have managed to take their place in production for many years. With the production of Plastic Injection machines, shaping works have become easier. Energy losses are also minimized, especially in the injection molding phase. While plastic injection forming is done, an injection machine is used. Plastic raw material derivatives are preferred during injection molding.
Losses During Injection Molding
Generally, many losses occur during injection molding. Part design is very important in the injection molding. At the same time, the structure of the material used, molecular weight, melting temperature are among the important factors. Some errors occur during shaping.
Among these errors:
• Deficiencies in the part
• Presence of depressions and unequal parts on the part
• Finding traces of burns on the part
• Air bubbles on the plastic material
• Lines on the material
• Adhesion in case of heating or cooling of the material
• Occurrence of burrs
• Color changes occurring in immiscible parts
• Delamination in case the part is dirty
It is effective in the occurrence of errors. If these points are observed, the losses will be minimized.
Actions to Reduce Losses
Errors that occur during injection molds are divided into four. These losses are mainly machine, user, material, and mold-based defects. There are also losses that are affected by design and mold. First, the problem must be identified. Part design is very important. The fact that the thickness of the parts used is less or more is effective in the occurrence of losses. In this case, the part thickness must be regulated. Especially the sharp parts in the part are also effective in the formation of losses. The machines used during plastic injection help prevent losses. Injection molds, which are the most important elements of plastic injection machines, go through many stages from the design stage until the trial prints are taken. As AYBERKSAN, we support our customers at every stage and always inform them about costs and products.