air jordans Y-ring rubber mold design _90

Y-ring rubber mold design

More, both are recommended: (1) Shore hardness calculated empirical formula C = r28-002-h) × 100% where c - rubber products, shrinkage,% - Shore hardness of rubber (2 ) to the general rubber vulcanization temperature calculation formula: C = f a 13-/5T--1 (90% where c - rubber products, shrinkage,% - coefficient of linear expansion of rubber B - mold metal △ BU curing temperature coefficient of expansion and measurement temperature (room temperature) the difference between the feet - of raw rubber, sulfur and organic ingredients in rubber volume fraction,% 212 of the compound cavity calculated shrinkage because many factors change, the mold cavity size of commonly used empirical data and the method of combining the formula to determine the thickness and cross section width = products, rubber shrinkage of a certain effect, the impact values in Table 1, Table 1, section thickness and width shrinkage rate of the compensation value of the thick Fan Head l, m black l,> 3 ~ 66 ~ 10】 0 ≈ 020 ~ 3O30 \6 It should be noted. When the products are not the same thickness and cross section width of the numerical range, both in the size range of small to compensate for those values. such as thickness (H) is 3ram, section width () is 2.5ram, should take 3irml, relative compensation is c-. circle shown in Figure 2 for the ring cavity size: D1 = D + (DxCL) d1 = d + (d ~ C1)】: + (HxC1) a wide cavity where the outer diameter D D - Product outer dimensions of inner diameter d broad product diameter size of the cavity H - cavity thickness at - product thickness - the thickness of flash scheduled c - rubber shrinkage compensation (look-up table 1) D Circuit 2 Calculation of the mold cavity size is similar for general rubber products, the success rate of 85%. For Figure 1, parts, and its cavity size may proceed as follows: (1) access to reference tables of rubber or shrinkage hardness of rubber shrinkage basis approximation, is essential for calculating the data size of the first batch of mold. (2) to improve precision cavity, according to product requirements to improve 2-3 grade, and its value is approximately equal tolerance of 0 Products .3 times (3) The products of high precision, so they chose a similar size and shape of the mold pressure test to determine the actual shrinkage of products; the same time as far as possible to open the mold in the left margin repair mode in order to test After the amendment is not the appropriate model size. 2.2 mold design mold structure shown in Figure 3. from the actual size of product size and pressure roller machine specifications to consider, through the calculation, the mold cavity with a mold 9. The casting part by 3 composed of two inserts, the use of cone orientation. features of this structure: (1) lip products, and outer diameter of a chamfer forming method using the mold cavity,[link widoczny dla zalogowanych], mold damage is not easy napping, will help improve product quality and ease of lip trimming . (2) The cone positioning and coordination, feeding,[link widoczny dla zalogowanych], taking material than convenience and help to improve products, face and lip seal performance. (3) die connected by hinged platform structure, Kai-mode, the Taiwan model is convenient; a position, orientation effect. difficult to buckle against the phenomenon caused by operations, reduce labor intensity (4) a multi-cavity mold. high efficiency. l2345 Figure 3,[link widoczny dla zalogowanych], the handle mold structure 1 2. on the fixed mold plate 3 socket head cap screw on the cross 4 5 cylinder off the lower die 6 7 8 die die under the hinge fixing plate 9 3 mold processing technology (1) selection of 45 of the template material quality carbon steel, the material processing, mechanical properties can meet the requirements of the rubber mold. (2) heat treatment conditioning, hardness 28 ~ 32HRC. (3) In order to improve the surface roughness of the cavity and prevent sulfide corrosion of the mold, the cavity surface shall be chrome plated, the thickness of 0005-0.O1lntm, after the polished chrome, so that surface roughness value reached Ra0.4m. (4) with the tolerance cone gap by asking the selection of tolerances and annotations in the cone large end note spotting each other, the contact area of not less than 80%. the corresponding set of model the number of system components should not be mixed (5) after assembly, grinding pieces of 3, to ensure the same level 4 Conclusion in the mold manufacturing process,[link widoczny dla zalogowanych], through the mold cavity, the size of the core due consideration to products effective control of shrinkage, the production proved that the mold is a simple, economical, safe and reliable structure,[link widoczny dla zalogowanych], and achieved good economic benefits. References 1 Yu Furong. rubber mold Practical Handbook of Chemical Industry Press, 19882 Chengdu University of Science. plastic molding technology in China Light Industry Press, 199o3 Pingbing Yao, Hantai Rong, Jiang Wensen mold design and manufacture of simple manual (second edition of the Shanghai Science and Technology .1992

相关的主题文章：

[link widoczny dla zalogowanych]

[link widoczny dla zalogowanych]

[link widoczny dla zalogowanych]

The post has been approved 0 times