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class="ny_product_detail"> <div class="ny_case_xq_t"> <h1>颗粒包装机的口 毾pȝ设计</h1> </div> <div class="ny_case_xq_c"> <span>文章来源Q?a href='/news/37.html'>/news/37.html</a></span> <span>发表旉Q?019-05-24</span> </div> <div class="ny_case_xq_contact"><a href="/1bz2j7/klbzj/" target="_blank">颗粒包装?/a>的封口系l设?br /> <br /> 塑料薄膜及其复合材料是自动制袋包装机中常用的包装材料Q特别是多层复ܓ薄膜Q因为它的气密性良好以及高强度而广泛应用于食品包装中?nbsp; <br /> <div style="text-align:center;"> </div> 塑料薄膜的封口采用热融封合的ҎQ具体操作是Q对塑rDrӡЖ薄膜的两个接触面加热Q其处于熔融的热塑化状态,再给接部位施压Q薄膜两个接@面融合密牢固。媄响封合质量的因素主要是加热温度、封合压力和和作用时间。热融封合的Ҏ有多UŞ式,用的是电阻加热法和脉冲加热法,另外q有高频电加热封合、超L加热合ϰɫâW、电加热封合和U外U加热封合等。每U方法均适用于一定品U范围的塑料材料。在自动制袋装填包装ZQǟo广泛应用电d热的热融合ҎQ因其具有机构简卡,调控方便的特炏V而且Q用于食品包装的薄膜主要是聚乙烯及其复合材料居多Q也是֮说主要以聚乙烯ؓ热封合材料,因此用电d热封合法是完全能满要求的?nbsp; <br /> <br /> q箋制ȥ包装Z有两个封合装|:˿ښ䌍ゃɵӾU封装置和横装|,分别实现包装袋的U늼接和横向封合。他们均采用电阻加热的封合方法?br /> <div style="text-align:center;"> <img src="/uploads/image/20190524/20190524093611_8558.jpg" alt="" /> </div> 颗粒包装机纵器的设?nbsp; <br /> <br /> 在连l式自动制袋装填包装ZQ由于薄膜连l输送,因此其纵~封接是q箋ȥҖ|Lǘq行的。ؓ此采用一Ҏ轮式电阻加热的热融封接器来实现连l纵。在此,热融接滚轮不仅完成包装薄膜制袋的纵向热,同时qv到对包装薄膜 ă辅助牵引输送作用。也是_牵引和纵是同时q行的,牵引滚轮同时也是U滚轮  如下?.1所C是U封执行机构ֶξ的结构。两U封辊轮的圆{内均装有加热器Q发热元仡一般用电阻发热U圈Q绕装在支上,再һ؀过支安装在u承或者安装板上。当U封辊轮随u旋{Ӟ加热器固定不动,持箋的对辊子的圆{壁均匀加热。加热温度通过温器测量,q由温控表控制器变化范围?nbsp; U封器的动力来源在传动系l设计时候已l提刎ͼ通过链轮动了纵ǃֻж¶˿֑֙的主动uQ纵器的主动u和被动u通过一对相互啮合的齿轮同时驱动两uQɾU封߀Խoһʹ辊实现相Ҏ转?br /> <br /> U封装置主要׃对纵辊1l成Q辊S󏈴͐的外圆周表面紧密压合,压合力来自弹力的作用。纵辊分别安装在u的左f,pSʧ@Ϣ母固定,使得辊轮可随轴{动。u7的两fu承固定安装。另外一轴可以相Ҏ动,滑动的目的是Ҏ؃节两纵辊的相d压力Q֪ʲô׼其上端固定一个调节支??nbsp; <br /> <br /> 在纵辊的封合圆p面上都加工有均匀l密的网U,以增加封口的牢固度,使热美观而且质量得到保证。另外,׃U封辊轮在工作中长间处于加热状态,q连l相ҎȻҲ˳压运转,因此需要有较好的综合忴һۊ学性能。在实际生中可采用合金l构钢加工,?0Cr{钢材造?br /> <br /> 横封器用于复合薄膜包装袋的横向热熵Ҳ]ʧ封合。横器是将l纵器q行U向合后筒状的包装材料Q按照工求的长度规格q行横向合Q按照横器工作的运动Ş引rҲЇ@,可分l运动和间歇q动两种形式。根据设计需要,本次设计中采用连l式U封装置〵Ͱʮfʯ?nbsp; <br /> <br /> 因塑料袋装机有连l或间歇q动之分Q故横封器在、运动Ş式、实现运动的机构ysǜһ及横的l构斚w往往有较大差异,即是连l式横封器,若该Z只需完成单一规格ǧË的Q一般较单,如要适用多规格可调的袋装机就较ؓ ˻复杂?nbsp; <br /> <br /> 一uU^行反向等速回转的滚轮的一Ҏ双方加热Q在二滚轮中通过口薄膜q行焊QޟԹ°빦其滚轮l构如下?.2所C,q种l构又称横封器,用来寨zl运动的薄膜q行塑料袋横向封口。滚轮依靡支?上的弹簧保持Ҏ接触,其压y力大小可通过锁紧螺母1和调节套{?{来获得。其中主动?动从动齿轮14{速回转,横封辊也q速回˺͖|˰转接触加热。在滚轮内装有电热丝L后֑֤套钢的加热,甉|q?和滑环(图中未画出)与加热棒中的늃丝相通。滚轮外形呈菱Ş Q见界面A-AQ,利用留下的圆弧部分封口,在圆弧面上可L|状qQ以利封口美观ƈ保证口质量。热辊的有效长度(150mmQ必d于大袋宽Q?20mmQ,热封辊的半径r应其热时的线速度与塑料移动速度相等。横辊材料可用40Cr钢,温度可在100u?78摄氏温度范围内调节?br /></div> <div class="info_key"> <span>相춼_˅标签:</span></div> <div class="ny_case_xq_b"><div>上一?<a href="38.html">液体自动包装机应如何定期保养</a></div> <div>下一?<a href="/1bz2j7/news/36.html">液体包装机的优势有哪?/a></div> <div class="clear"></div> </div> <div class="ny_case_news"> <div class="ny_case_news_t">【相x闅R?/div> <div class="ny_case_news_c"> <ul> <li> <h6> <a rel="nofollow" href="/news/78.html" title="枕式区ʯ装机的使用让商品流通速度增娎">枕式包装机的使用让商品流通速度增Њ</a> </h6> <span>2020-04-24</span> </li> <li> <h6> <a rel="nofollow" href="/1bz2j7/news/77.html" title="自动包装机如何高效率">自动包装机如何高效率</a> </h6> <span>2020-04-17</span> </li> <li> <h6> <a rel="nofollow" href="/1bz2j7/news/76.html" 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