| With rapid development of modernization and the continuous improvement of people's living standards, Chinese demand for solid tire is growing, and so are the quality requirements. High-quality solid tire should be guaranteed by the high-quality rubber vulcanization molding equipment. As a result, that if a highly efficient enterprise can produce high-quality solid tire depends largely on the level of solid tire vulcanization molding equipment. Up to now, forming solid tire at home and abroad mainly use the traditional method of molding, winding, centrifugal casting method and the injection method, which, however, exist the following problems by varying degrees: firstly, both molding and winding methods are process that the rubber sheets will be carried out prior for attaching. Their manufacturing process is complex, the use of equipment and energy consumptions are too much, the compactness between rubber layers is bad, and the layers can fall off easily. Second, because of the molecular structure, the internal heat generation of polyurethane solid tire is quite serious. The poor dynamic performance, poor anti-slide performance and high prices of raw material hinder the promotion of polyurethane solid tire.In order to adapt to the market needs for the solid tire vulcanization molding equipment and satisfy the requirements for "highly efficiency, high quality, low power consumption, low cost", this paper newly designed two station solid tire one-step injection molding vulcanization set basing on the study of a variety of solid tire vulcanization molding equipments and performance characteristics. In this paper, the main results are as follows:(1) For the first time one-step injection molding technique is applied to the production of solid tire, which improves the quality and production efficiency of solid tire.(2) Owning to the two-station integral structure, injection molding curing press, which can be used for large, medium and small capacity injection molding products vulcanization, not only has high efficiency and overall reasonable force, small deformation, highly precision work, but also has compact structure and small occupation area. A set of injection devices inject with two stations in order, each of which mode-locking and demoulding device work independently, and complete the vulcanization and demoulding,which has continuous automation characteristics。(3) The design of the spring buffer and open bearing chock increase the pressure sensor's control precision and the reliability, and solve the problem of unable unloading when the spiral clamping device is jammed accidentally.(4) The downward movement of rubber injection entrance resolves the rubber leakage caused by the non-uniform flow channel stress in traditional injection process.(5) Centerlines of the lead screw in pressing device and the screw in injection device are of coincidence. This structure makes the injection have no eccentric torque and improves the alignment performance.(6) Electromagnetic clutch and the ball screw provide ingeniously the place for cleaning the trash in the channels, which increase the operational automation level.(7) The machine uses advanced digital sensing technology to detect the nose pressure, clamp force and axial force, which achieve compound quantitative information and digital operation of installations of pressure, so that the operation of equipment is safer and more reliable, in addition, it's easy to realize automation.(8) The paper uses traditional design method, Finite Element Analysis Method, three-dimensional forming design and three-dimensional process simulation together, which fully reflects the synchronous design with manufacture of modern design concept.In summary, the two-station solid tire one-step injection molding vulcanization set has a lot of advantages that the existing solid tire molding equipments do not own, and obviously, it is innovative. |
