貼片機(jī)電動(dòng)式喂料器的設(shè)計(jì)及其研究
本文關(guān)鍵詞:貼片機(jī)電動(dòng)式喂料器的設(shè)計(jì)及其研究 出處:《吉林大學(xué)》2012年碩士論文 論文類型:學(xué)位論文
更多相關(guān)文章: 貼片機(jī) 喂料器 電磁設(shè)計(jì) 步進(jìn)電機(jī)
【摘要】:喂料器(Feeder)也稱供料器,在貼片機(jī)行業(yè)中常被稱為飛達(dá)。在表面貼裝技術(shù)中,簡(jiǎn)稱SMT(Surface Mount Technology),喂料器是影響貼片機(jī)貼片性能和生產(chǎn)效率的重要部件,也是貼片機(jī)最主要的配件之一。因此,許多貼片機(jī)將可容納喂料器的種類及數(shù)量作為其型號(hào)的標(biāo)志之一。 由于傳統(tǒng)的喂料器一般是氣動(dòng)機(jī)械式喂料器,其動(dòng)力來(lái)源為氣缸,因此存在一些無(wú)法避免的自身缺陷,主要表現(xiàn)為以下幾點(diǎn): 1、機(jī)械結(jié)構(gòu)復(fù)雜,維護(hù)較為不便,且容易出現(xiàn)飛達(dá)不卷帶以及由于彈簧等的變形導(dǎo)致的推料不到位、不進(jìn)料等一系列問(wèn)題。 2、采用氣動(dòng)方式作為動(dòng)力來(lái)源,,因此對(duì)貼片機(jī)相關(guān)部件較好的密封性,同時(shí)貼片頭在取料時(shí)壓桿推動(dòng)喂料器推料時(shí),機(jī)械振動(dòng)較大,容易出現(xiàn)丟料等情況。 3、采用氣動(dòng)作為動(dòng)力來(lái)源,自動(dòng)化程度受到限制。 鑒于上述機(jī)械式喂料器存在的一些無(wú)法避免的缺點(diǎn),本文設(shè)計(jì)并研制電動(dòng)式喂料器來(lái)延長(zhǎng)喂料器的使用壽命、降低維護(hù)成本、提高貼片效率、減少機(jī)械振動(dòng)、實(shí)現(xiàn)喂料器的電氣自動(dòng)化。本文采用的方案為:用一臺(tái)薄盤式步進(jìn)電機(jī)實(shí)現(xiàn)料帶按貼片機(jī)的要求前進(jìn),另一臺(tái)薄盤式步進(jìn)電機(jī)帶動(dòng)撕皮輪轉(zhuǎn)動(dòng)將料帶保護(hù)皮撕開(kāi),兩臺(tái)電機(jī)同步運(yùn)行實(shí)現(xiàn)喂料器卷帶及撕皮的功能。為使貼片機(jī)能更有效率的工作,一臺(tái)貼片機(jī)上飛達(dá)的數(shù)量某種意義上代表這臺(tái)貼片機(jī)的貼片能力,由于市場(chǎng)上常見(jiàn)的步進(jìn)電機(jī)在滿足扭矩要求的情況下,尺寸偏大,厚度較厚,因此本文設(shè)計(jì)并定制了一款薄盤式步進(jìn)電機(jī)。硬件部分,采用Pic18F458作為控制系統(tǒng)的微控制器,采用L298N作為步進(jìn)電機(jī)的驅(qū)動(dòng)器,采用8位撥碼開(kāi)關(guān)設(shè)置喂料器的ID。軟件部分,采用CAN總線實(shí)現(xiàn)喂料器與主機(jī)、喂料器與貼片頭、喂料器與喂料器之間的信息傳遞。同時(shí)也解決了貼片機(jī)上料帶的前進(jìn)及料帶的撕皮時(shí)同步運(yùn)行的控制問(wèn)題。經(jīng)過(guò)對(duì)喂料器樣機(jī)進(jìn)行喂料器實(shí)驗(yàn)驗(yàn)證,結(jié)果證明喂料精度達(dá)到貼片機(jī)要求。
[Abstract]:Feeder feeder, also known as feeder, is often called Fedda in the placement machine industry. In surface mount technology. For short, SMT(Surface Mount technology, feeder is an important component that affects the performance and production efficiency of placement machine. It is also one of the most important accessories for the placement machine. Therefore, many placement machines take the type and quantity of the feeder as one of the symbols of their models. Because the traditional feeder is generally pneumatic mechanical feeder, its power source is cylinder, so there are some unavoidable defects, mainly as follows: 1. The mechanical structure is complex, the maintenance is inconvenient, and it is easy to appear a series of problems, such as the Feddahl tape and the deformation of spring and so on, the pushing material is not in place and the material is not in place, and so on. 2, the pneumatic method is used as the power source, so the sealing of the relative parts of the placement machine is better, and the mechanical vibration of the chip head is larger when the pressure bar pushes the feeder to push the feed when the feed is taken. It is easy to lose materials and so on. 3. The degree of automation is limited by using aerodynamics as power source. In view of some unavoidable shortcomings of the mechanical feeder mentioned above, this paper designs and develops an electric feeder to prolong the service life of the feeder, reduce the maintenance cost, improve the efficiency of the patch, and reduce the mechanical vibration. In this paper, a thin disk stepping motor is used to realize the material belt to advance according to the requirements of the placement machine. Another thin disc stepping motor drives the wheel to tear the protective skin, and the two motors simultaneously run to realize the function of feeding tape and shredding. In order to make the placement machine more efficient. The number of Fidahs on a placement machine represents the chip ability of this machine in a sense, because the common stepping motor in the market meets the requirements of torque, the size is too large and the thickness is thick. In this paper, a thin disk stepping motor is designed and customized. In the hardware part, Pic18F458 is used as the microcontroller of the control system, and L298N is used as the driver of the stepping motor. The ID.Software part of the feeder is set by 8-bit code switch, and the feeder and host, feeder and chip head are realized by CAN bus. The information transfer between feeder and feeder. At the same time, it solves the problem of the control of the advance of the feeding belt and the simultaneous operation of the strip when the strip is torn. The feeder prototype is verified by the feeder experiment. The results show that the feeding precision meets the requirements of the placement machine.
【學(xué)位授予單位】:吉林大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2012
【分類號(hào)】:TH237.1
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