【文章內(nèi)容簡介】 分鐘所需冷卻水的流量體積較小，查《塑料模塑成型技術(shù)》，取冷卻水道直徑d=6mm。由于冷卻水道的位置、結(jié)構(gòu)形式、表面狀態(tài)、水的流速、模具材料等很多因素都會影響模具的熱量向冷卻水傳遞，精確計算比較困難。所以在實際的模具設(shè)計和生產(chǎn)過程中，通常都是根據(jù)模具的結(jié)構(gòu)確定冷卻水路，通過調(diào)節(jié)水溫、流速來滿足要求。 在塑料件注塑成型過程中，當(dāng)塑料熔體充填型腔時，必須排出型腔及澆注系統(tǒng)內(nèi)的空氣以及因塑料受熱而產(chǎn)生的氣體。如果這些氣體不能被順利排出，制件將會由于塑料填充不足而出現(xiàn)氣泡、接縫或表面輪廓不清等缺陷，甚至氣體受壓而產(chǎn)生高溫，使塑料焦化?；谝陨显颍紤]到充電器不屬于深型腔類零件，利用分型面之間、頂針與模板之間以及活動型芯與模板之間間隙進行排氣。第四章 模具材料的選擇及熱處理工藝實際的生產(chǎn)過程中，塑料注射模具結(jié)構(gòu)比較復(fù)雜，一套模具由各種各樣的零件組成，各個零件在模具中所處的位置、作用不同，這就對其材料性能的要求就有所不同。所以選擇優(yōu)質(zhì)、合理的材料，是生產(chǎn)高質(zhì)量模具的保證。對于塑料模具用材料的一般要求有：1) 具有良好的機械加工性能；2) 具有足夠的表面硬度和耐磨性，足夠的強度和韌性；3) 具有良好的拋光性，具有良好的熱處理性；4) 具有良好的耐腐蝕性和表面加工性等特點?；谝陨蠋c塑料模具材料的選用原則，選用充電器注射模具各個部件的材料及熱處理方法如表所示：零件名稱規(guī)格硬度HRC材料熱處理墊板（支撐板）S50C淬火43～48動、定模板調(diào)質(zhì)HB230～270澆口套，拉料桿T8A淬火50～55內(nèi)模GSTAR淬火，調(diào)質(zhì)50～60導(dǎo)柱P20滲碳、淬火56～60導(dǎo)套T8A、T10A淬火50～55頂桿板S50C調(diào)質(zhì)HB230～270 頂桿固定板定位圈 方鐵淬火43～48限位釘支撐住復(fù)位桿S50斜導(dǎo)柱T8A、T10A淬火50～55滑塊S50C英文翻譯Highlight the cost advantages of new technologies Mold ManufacturingWith the mold of the skills step by step to the scientific development of the original master model to rely on graphics and rendering car cover mold of traditional methods, step by step by the CAD / CAM digital terminal will be described in the shape of the automobile panel to track the method of processing replaced. Telephone lines with the remote control process will be the level of scientific mold manufacturing to a new height.Recalling the past, in the processing system used with motor vehicles in the red cover mold pieces of steel, it is important to draw a blueprint for detailed and accurate in accordance with the size of stamping to create the master model. It can be said that the design and system model is the parent type mold.First, in the manufacture of die casting method, the first module to be maintained or woodlike pieces of auto parts. In accordance with the model of a certain percentage of calls made by the mold, often used as maternal profiling processing type, or as a milling machine trajectories show auxiliary model. For milling on the shape of the mold by means modulus along the contour shape by moving the cutter means in accordance with the mode on the mobile to the milling tool materials, like the mold cavity required. Processing methods are now fundamental changes have taken place. Provided by the customer CAD data to generate the machining cutter tracks, automatic processing of the automotive panel stamping die and the molded plastic sheet forming the mold cavity. Although this new technology to process more than ever a more accurate processing of the two pairs of bined mold surface, but would also like to test pressureshaped mold, the specimen measured. CAD data is usually processed correctly the main cavity of the mold surface, and then to prevent wear and tear from the pad and other parts with the main cavity with the face. Now this new technology can be summarized as follows the characteristics of a few.Second, do not need to die on the main model and no longer rely on the use of the main model and the mold, but it improved machining accuracy. For example, very strict process tolerance and the main cavity surface after grinding manual polishing of the molds required, the use of CAD data processing than by the main model and the effective modulus. The main difference is the size of the control to be fundamentally improved. Using traditional methods of processing plastics forming mold cavity, the process tolerance will vary with the daily changes in temperature. For molded plastic sheet forming the mold is also very good although the machining accuracy, but the hot sheet of plastic forming of sheet metal stamping not have the rebound, so precisely controlled by the CAD data processing, the generally do not need to test mode. After this conventional mold as long as the customer can verify that in general no longer required to submit parts. This is mainly because the use of CAD data processing to the processing of test results, the cavity of the mold surface can also be used for mathematical analysis, thus ensuring the manufacturing process can be very strictly in accordance with the implementation of the original design data. It was ruled out in the process of mold manufacturing manual, improved the precision mold and processing cycle petitiveness. To this end the application of CAD data processing technology in the majority of die mold factory has been promoting. Now the experience of many plants can confirm that after the application of this technology, although generated by the CAM tool path increased by 14%, but the time for polishing a decrease of 33%, with a total processing time by %, Dies quality improved 12%. Now, various CAD / CAM software tool to help