Seamless welding technology in the mold shown excellent welding performance, improved part accuracy, finish and appearance of observability, to shorten the manufacturing cycle of the mold.As the global market demand for high quality components increasing, people can improve part accuracy and seamless welding technology more and more popular. Recently, Japan Makino Inc. (Makino) coalition partners successfully developed a new type of seamless welding technology, which can effectively eliminate the mold between the weld, transfer lines and parting line. The key process using advanced technology and vertical machining centers, can radically new approach to production molds, while the injection molding process, the use of a highly efficient heating and cooling cycle. This new technology is not yet patented, Makino for its development of related processing applications.

Using seamless welding technology can not only help eliminate mold seam, but also a corresponding increase parts accuracy, finish and appearance of observability. At the same time, seamless welding technology in injection molding process of implementing a highly efficient control, shortening the processing cycle of the mold. As the technology products with excellent surface finish, so do not need to use secondary plating and annealing, thus avoiding the contraction caused by the size of secondary changes. This technique applies to most of the plastic resin and glass filled materials, particularly suitable for automotive instrument panels, laptop computer case, TV and digital camera processing devices such as shell, is also applicable to large scale display devices and automotive exterior parts processing.

New Mold Seamless Welding Technology

In the past, the production process of the mold, cooling lines near the surface arranged in the mold, the product is not always uniform surface finish. In some relatively new technology, through the mold core and cavity cooling water pipeline set in the resin near the injection region, can produce a better product quality guarantee.The new seamless welding technology used in modern machine tools and some new technology. According to the new technology, process requirements, processing similar to the mesh of the mold core and cavity, in order to prevent its movement and the second fixture, use the fourth axis milling machine, this can increase the tolerance dimension precisions. Board room cooling fins, and water pipelines are more widely used, and further improve product quality and seamless weld finish.

The Impact of Mold Manufacturing Process

The emergence of a new seamless welding technology designed to mold a variety of channel change and vertical machining centers with polyhedron milling possible. Forming in the actual molding process, the die channel design changes can help control heating and cooling of the best mold temperature. Through the important infiltration in diameter milling rooms, you can keep the temperature fluctuations within 60 ?. The infiltration chamber was in the back cavity milling, the same shape and mold cavity can be used as high pressure steam and cooling water channel, could play the role of cavity surface thermal conductivity, so that a more uniform temperature distribution, so as to maintain temperature control rate of temperature fluctuations.

Polyhedron with the compressed air used vertical machining center milling does not require debugging time, reduced cycle and reliability with the increase in mold production costs have been reduced. The machining centers equipped with specially designed clamp and clamp system (rotary smart clamp), with the clamping system, workpieces just installed a debug card processing can be surrounded by a mold core and cavity. Surface can alternately, continuous processing, and indexing efficiently, shorten the processing cycle and delivery time. A standard horizontal machining center is unable to achieve these characteristics.

Makino processing system designed first workpiece to a fixed point for indexing, then the corresponding surface processing. Because of the workpiece to an angle indexing, and scored according to the degree of value to move the coordinate values, the process by the CNC device control and to correct, thus eliminating the need to use the CAM software ever.Application seamless welding technology will not occur to the workpiece warpage and deformation of the mold cavity and mold core side of the mold will not cause any problems matching. In addition, since the workpiece can be tilted to avoid the ball cutters for end use only processing, extending the service life of cutter.

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