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diagram simplifies the process setup and analysis. Vacuum settings are also stored with the die program. Tis reduces die change time and avoids data-entry errors once a process is established. By integrating the vacuum system into the die casting


machine, the work of the operator is made much simpler. Tis means that the operator no longer has to manage twodifferent systems with different application philosophies, different control systems and different user interfaces, so their appearance and performance remain the same. Te entire vacuum process can be centrally set up, controlled and monitored. Fully-automatic monitoring functions maxi- mize the up-time of the cell. Te condition of each filter is monitored, allowing for immediate and targeted action. Now the operator can change the filters proactively avoiding unplanned downtime and poor quality parts. Te integration of the vacuum system into the diecasting


machine makes it easier to optimize the process. Modern diecasting applications often require multiple vacuum evacu- ation points (die valves). Sequencing multiple die valves makes it even harder to setup, control and monitor the processes reliably. Te BühlerSmartVac solution accommo- datesup to fourdie evacuation points, plus separate evacu- ation provisions for the ejector plate and the shot sleeve. Beyond the quantity of evacuation points, users also have to accommodate different types of valves that have their own unique performance characteristics. For instance, self-closing valves only require a start vacuum signal, where a hydrauli- cally actuated valve must be opened and closed within the injection cycle. SmartVac makes it easy to setup, control and monitor these common valves. Te setup is overlaid on the injection profile so an operator can visualize the vacuum trigger point relative to the injection piston motion. Further tuning is accomplished with advanced algorithms that mea- sure the shift speed of each valve and automatically adjust the control to improve precision and accuracy. Tree critical parameters are measured each cycle to ensure the process is stable; 1. vacuum level, 2. draw down rate, and 3. filter cleanliness. Finally, the graphic profile display makes it easy to setup trigger points, but one other feature simplifies the machine setup even more. Once the vacuum start position is selected, the user chooses one of three algorithms that will optimize the first phase profile. Customers have used these algorithms offline for years, but now Bühler has built it into the machine controller. An optimized first phase minimizes turbulence in the shot sleeve to avoid air entrapment. It also minimizes the heat loss in the shot sleeve. Bringing these functions together in the die casting machine control system leverages the best technology to help die casters optimize their vacuum application. TeBühlerSmartVac system combines state-of-the-art


输据数Ҳ避，间时更ՊӀ模صӗեਫ工定े֨й助有这 ҵ错ન。 很单এҁ工ङմҁ操，械机铸Թӱ成集统系空ऱر


这Ќ，统系ङգЉ套Д理管需无մҁ操वն意就这。ך 控ङգЉ有装安，理Խپ३用应ङգЉ用采还统系套Д 观יङսфङ来ӟф生是Ѹ，面उ户用ङգЉչ统系Ӳ չ性ਈ却ґ持ЉՊ。整Зऱ空工ਫ都Օљ集Иગ置、控 Ӳչड控。完Ҷਘ动化ङड控功ਈेґ单ҫङ工ҁ时间 ऩչ时即й便，ЈФ控ड֨都֘清滤З每。化ם最现实 ђ，֘清滤换更ү预љՕ化ҁ操，֨现。施实ङ动੧标 。҄Љ量ૅў零չ机Ҡי意Ҳ避৲ 现。化ѩङਫ工便方更械机铸Թӱ成集统系空ऱر ）门阀Ӏ模（点空抽空ऱЗך求要常通پ३用应铸Թї 、置ગ靠Օङਫ工现实难更常通پ排门阀Ӏ模Зךر。 达ךহ容љՕ案方ӐઆIG<ZXGS9XKRN½(。控डչӲ控 ङ缸ذԹչ֘ӟ排й用适有配还יՐ，点空抽Ӏ模З֚ 安љՕ还户用，יљ量数ङ点空抽д除。置装空抽独单 阀闭ਘ，ײ҆。门阀ङ型ঝգЉङ点特ਈ性特独有Ӏ装 循ذ֕֨须必门阀动ਚԹ液৲，՚Ғ空ऱ动կ要需Ց门 环ӄ开闭。9SGXZ<GIએ这п常用阀门ङગ置、控Ӳչ 操此֜，Їў文置配ذ֕֨त覆置ગп这。化单এ控ड 进。ҁ动ङ动运塞活ذ֕ثब点Շઇ空ऱ见रљՕմҁ 一步ङલਭ通过高级算法实现，这п算法ѫ测量՟З阀 չچإত高提৲ђ，ӑەӲ控ਭલ动ਘ并چ速动१ङ门 І量测要都环循З每，性定६ङਫ工ґेдО。چेӕ ֘清滤、 ，چ速ѵָ、 ЗҼ键Հ数： 、ऱ空水平， 一Ր是Ѹ，置ગङ点Շઇй便ॐي片֣，ե最。چ洁清 功ਈ却ਈ进一步এ化机械ङગ置。一旦选Иऱ空կ动ѹ 置，用户选择这ІЗ算法Иङ一З即Օѩ化আ一阶段ङ 现是Ѹ，年ך很法算п这用҅িख़经已户客。ў文置配 阶一আ化ѩ。֘Ӳ控械机ӱ成集法算п这رXKRN½(，֨ 。ऊ滞气空Ҳ避й助有，Ѻ最ਙ降流湍ङИ缸ذԹر段 ӱ成集部Ҷਈ功п这ر。ע损热ङИ缸ذԹд化ѩ还这 Թ铸机械控Ӳ系统是҅用最҄ङ技术来帮助模Ӏ铸造商 。پ३用应空ऱҿ化ѩ


Having a vacuum system integrated in the die casting machine increases uptime and simplifies operation.


。ҁ操д化এ，间时੧运常正д加增械机铸Թӱ成集统系空ऱر June 2016 FOUNDRY-PLANET.COM | MODERN CASTING | CHINA FOUNDRY ASSOCIATION | 63


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