Mountain trimming 1 cent>1 art supplement to obtain the flange outline size. The concave mold plan is to pre-bend the bottom surface to bend and form, that is, the blank is swallowed and pre-bent into the bottom curved shape 4, and then the blank is positioned on the positioning pin 3 and the concave mold 7. Compared with the scheme, the structure of the forming die is simple and the trimming die is omitted, which greatly reduces the production cost. 5 Concluding remarks The simple structure of the mold is easy to use, reliable and stable, and has been put into production. Uniform tension and poor material flow. . There should be no wrinkled materials to cause cracking. No matter from the design. The forming depth is +, and the shape is asymmetric. Jilin Jilin People's Publishing House, 3 Zhongwei Xiong. The fixed plate 6. Place the pre-bent shape return material on the concave mold 7 with positioning pins 3. 1.5mm-deep opening is processed at the location where the positioning pin is placed in the die 7 to make the positioning pin and the die 7 completely fit seamlessly to prevent jamming. When closing the mold, the male mold 2 presses one piece into the female mold 8 cavity.Because the mating surface between the die 7 and the die 8 is a curved surface, the matching gap should not be greater than 0. The positioning pin 4. The upper template 2. 2. North; 1 Machine Thief Industry Press, 1988. Practice has proved that the mold design is successful. ; 1; 1 The accuracy of the trimming die set by the program department. 1. Die design manual. 100 cases of stamping technology. During the Syringe Mould Factory process, the blank is completely in contact with the projection. The curved shape of the outer flange and the bottom curved shape are not complete. The pre-bent bottom profile will directly affect the part. Before closing the molds, the ejector mechanism pushes the 1 mold 7 out of the concave shuttle 81 through the ejector pin 4. The guide plate is hard-treated to improve the service life, even if it is worn out, it can be replaced in time, and the 4 punches are pulled out.
