As the demand for high-quality parts in the global market grows, there is an increasing popularity of seamless welding techniques that can improve part accuracy. Recently, Makino's alliance partners have developed a new seamless welding technology that effectively eliminates welds, crossovers and parting lines between molds. The key to this process is the use of advanced technology and vertical machining centers to produce molds in new ways, while using efficient heating and refrigeration cycles in the injection molding process. The new technology has not yet been patented, and Makino has developed related processing applications for it. The use of seamless welding technology not only helps to eliminate mold welds, but also improves the accuracy, finish and appearance of the parts. At the same time, the seamless welding technology implements efficient control during the injection molding process, shortening the machining cycle of the mold. Since the product produced by this process has an excellent surface finish, secondary spraying and annealing are not required, and dimensional changes due to secondary shrinkage are avoided. This technology is suitable for most plastic resin and glass filling materials. It is especially suitable for the processing and production of automotive instrument panels, notebook casings, TVs and digital cameras. It is also suitable for large display devices and automotive exterior parts. Processing. New mold seamless welding technology In the previous mold production process, the cooling line was placed near the surface of the mold, and the surface finish of the product was always not uniform. In some relatively new processes, the quality of the produced product can be better ensured by placing the water flow of the core and the cavity cooling line in the vicinity of the resin injection zone. The new seamless welding technology uses modern machine tools and some new process technologies. In order to avoid the movement and secondary clamping according to the technical requirements of the new technology, in order to avoid its movement and secondary clamping, the fourth axis milling of the machine tool is used, which can improve the tolerance dimensional accuracy. The fins on the board as well as the water chamber cooling lines are also more widely used, further improving the quality of the product and the smoothness of seamless welding. Influence on mold manufacturing process The advent of new seamless welding techniques has made it possible to make many variations in the design of the mold channel and the milling of polyhedral vertical machining centers. During the actual press forming process, changes in the mold channel design can help control the optimum temperature change for mold heating and cooling. By milling the important medium-diameter permeation chamber, temperature fluctuations can be kept within 60 °C. These permeation chambers are milled behind the cavity and have the same shape as the cavity. They can be used as a passage for high-pressure steam and cooling water. They can conduct heat conduction on the surface of the cavity, make the temperature distribution more uniform, and maintain temperature changes. The speed of temperature fluctuations. The milling time is not required for milling with a polyhedral vertical machining center with compressed air. As the cycle is shortened and the reliability is increased, the production cost of the mold is reduced. The machining center is equipped with a specially designed clamping and clamping system (rotary smart clamp). With this clamping system, the workpiece can be machined on one side and the cavity with only one adjustment. The surface of the workpiece can be alternately and continuously processed, and the index can be efficiently indexed, shortening the processing cycle and delivery time. These features are not achievable with standard horizontal machining centers. The processing system designed by Makino first classifies the workpiece at a fixed angle and then performs the corresponding surface processing. Since the workpiece is indexed at an angle and the coordinate values ​​are moved according to the scored value, the machining process can be controlled and corrected by the CNC device, thus eliminating the CAM software that must be used in the past. The application of seamless welding technology does not cause warpage and deformation of the workpiece, and does not cause any problem in matching the cavity with the side mold of the core. In addition, since the workpiece can be tilted, the end face machining using only the ball milling cutter is avoided, and the service life of the milling cutter is prolonged. Wood Shaker Door,Shaker Door,Stile And Rail Doors Forest Bright Wood Industry Co., Ltd. , http://www.steeldoors-manufacturer.com
Mold seamless welding technology
Seamless welding technology has demonstrated excellent performance in mold welding, improving the accuracy, smoothness and appearance of parts, and shortening the manufacturing cycle of the mold.