CN1102900C - 制造塑料塞式桶和盖式桶的方法 - Google Patents

制造塑料塞式桶和盖式桶的方法 Download PDF

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CN1102900C
CN1102900C CN99103409A CN99103409A CN1102900C CN 1102900 C CN1102900 C CN 1102900C CN 99103409 A CN99103409 A CN 99103409A CN 99103409 A CN99103409 A CN 99103409A CN 1102900 C CN1102900 C CN 1102900C
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Abstract

制造塑料塞式桶和盖式桶的方法，以公知方法一体吹塑成型具有圆筒形桶壁、下底、上底以及上支承环的塞式桶体、上底至少具有带封闭塞口的桶塞以充满排空塞式桶，上支承环用于承接桶爪，为了制造盖式桶，从经冷却的塞式桶体上对中于桶轴线切去上底，在上支承环上形成盖式桶体的开口缘，接着借助夹紧环将具有密封件的简易桶盖或塞盖固定到塞式桶体的开口缘上。

Description

制造塑料塞式桶和盖式桶的方法
本发明涉及一种制造塑料塞式桶和盖式桶的方法。
在DE9110012.7U1公开的塞式桶和DE29521283U1公开的盖式桶中，具有承接桶爪的上支承环，该支承环的横断面呈L形，由吹塑机制造，该吹塑机装有用于不同加工桶型的注模。这样的加工需要不同的高投入的成形机。
另一可能是在一个吹塑机加工两种桶，然而这需要针对不同类型的桶改装吹塑机，而改装吹塑机除了纯制造成本还要增加由于停机和组装带来的费用。
环境保护法严格规定，如塑料或钢的桶容器要由一次使用过渡到多次使用、为减小剩余量改装大容量的容器、发展新的多次使用容器，考虑到有害物质会影响环境，可以修复多次使用容器，而为了修复或通过无害物有序的消毁或为了生产材料的再处理，其容器最好排空剩余物并进行简单的清洗。
随着可修复的易于消毁的防止有害物质污染的硬容器(一般为塑料或钢桶)的发展，产生了DE3539656A1公开的盖塞式桶，它部分代替了现今使用的封闭塞式桶。根据需要，所述桶可以设置作为内层的内壳或袋，由塑料箔(例如聚乙烯箔)制成或由抗扩散的合压金属塑料结合箔制成，如用聚乙烯两侧胶合的铝箔制成。例如DE8810760U1公开了带有内层的桶，若盛装易带来麻烦的色散产品，如颜料，在干燥后，它几乎不能从桶壁上分离，这时使用带内层的塑料桶或钢桶。塑料桶中的由抗扩散结合箔制成的内层阻止了含溶剂的填料扩散到桶壁上并防止了来自桶壁溶剂的可能的反扩散。钢桶的内层节省了保护钢板受介质侵蚀或腐蚀所需的内涂漆。
DE4437748C2公开了一种修复塞式桶的方法，该塞式桶是统一规格的，通过吹塑成形的，它可作为塞式桶的新配件或作盖式桶使用。
在该修复方法中，首先要将上底沿垂直于塞式桶的桶体的桶纵轴线与承接桶爪的横断面呈L形的支承环分离，所述上底具有装排塞和充排放塞，而后，光滑切削或铣削通过分离上底形成的桶体的环形切断缘，对桶体清洗后精整该切断缘，为此，桶体用于焊接加工的切断缘移入精整型芯中并在切断缘区域处加热，经冷却，桶体的切断缘部分紧紧收缩到精整型芯上，接着从精整型芯中抽出桶体，借助加热镜将注塑颈环焊接到桶体的精整切断缘上，所述颈环具有径向向外突出于下缘以制造宽颈盖式桶的环绕边。在借助切铣工具使桶体和颈环之间的焊缝光滑并对桶体进行密封检查后，借助夹紧环将注塑宽颈桶盖固定到颈环上，所述夹紧环与在桶盖下缘上形成的盖凸缘搭接并卡在颈环边上。
为了使塞式桶继续使用而修复塞式桶时，将桶体与上底分离后，具有装排塞和充排塞以及支承环的新上底焊接到桶体的精整的切断缘上。
这些公知的修复产品如桶的方法相对本技术而言费用高价格贵。
本发明的目的在于价廉的制造塞式桶和宽颈桶的方法。
本发明的目的的技术解决方案在于，这种制造塑料塞式桶和盖式桶的方法，其特征在于，吹塑成形具有圆筒形桶壁、下底、上底以及上支承环的塞式桶体，上底具有至少一个带封闭塞口的桶塞  以便充满排空塞式桶，上支承环的横截面呈L形以承接桶爪，为了制造公知的盖式桶，从被冷却的塞式桶体上沿对中于桶轴线的圆断面切去上底，而保留支承环，形成盖式桶体桶颈上的开口缘，借助夹紧环将具有密封件的简易桶盖或塞盖固定到塞式桶体的开口缘上。
本发明的制造方法将以公知方式压力成形的塞式桶根据需要从塞式桶体上截下上底，以再加工成盖式桶，通过使用适宜满载的压力成形机加工两种类型的桶，而无需重装成形机，从而减少制造盖塞式桶的成本。
本发明的修复方法是从经使用的塞式桶上截取上底改装成盖式桶，技术简单经济性好。
下面参照附图描述本发明塑料桶的制造方法和修复方法，其中：
图1是吹塑塞式桶的局部纵向图，
图2是带充排塞的塞式桶上底的放大断面图，
图3是具有装在支承环上的桶爪的塞式桶上底的放大截面图，
图4是由图1-3的塞式桶制造的盖式桶的局部纵向图，
图5是根据图4盖式桶上缘区域的放大断面图，具有简易夹紧盖和设置其上的桶爪。
图1-3示出一体压力吹塑成型的塑料带塞式桶1，包括桶体2，桶体具有圆筒形桶壁3、下底4、基环5、上底6和上支承环12，上底6具有填充排放塞7和充排气塞8，它们垂直于上底6设置，它们的孔7a、8a由螺旋塞构成的桶塞9、10封闭，上支承环12的横断面呈L形，用于承接桶爪11。
上底6具有沿桶轴线13-13方向经支承环12向上拉出的具有堆放面15的基盘14和相对桶轴线13-13对中分布的环形通道16。该环形通道16通过支承环12、支承环12和桶壁3之间的过渡部分17以及向上弯曲的过渡到中心基盘14的上底6的部分18形成。
在制造带塞桶1时，在吹塑成型的带塞桶体2的环形通道16的基底21冷却后，穿过支承环12和桶壁3的过渡部分17钻出朝着带塞桶体2外侧倾斜的一个水排放孔22或多个水排放孔。
桶爪11的一个爪11a夹住向下倾斜于桶壁3的支承环12的下棱12a，另一爪11b夹在环形通道16中，其中的爪11b抵靠在支承环12和桶壁3的过渡部分17的内侧17a上。
为了制造盖式桶23，从经冷却的塞式桶体2上切去沿桶轴线13-13对中的圆断面19的上底6，而保留上支承环12并在盖式桶体24的桶颈26上形成开口边缘25。
接着，借助夹紧环29将带密封件28的简易盖27或塞盖固定到盖式桶体24的开口边缘25上。
注塑成型的塑料桶盖27具有盖缘30，它由限定向下敞开的环槽31的外缘30a和内缘30b形成，在环槽31中浸入或放入盖密封件28。在桶盖27的中部区域形成具有堆放面34的盖盘33，该堆放面34由与盖环36相接的环槽35围住。在盖缘30与盖环36之间形成呈U形断面的环形通道37。在桶盖27的下侧通过环形通道37形成对中于桶轴线13-13的环形桥件38、39以加固桶盖27。
在将桶盖27装入盖式桶体24的开口缘25上时，在桶轴线13-13方向向上突出的开口缘25的环形桥件25a嵌入桶盖27的环形槽31、在拉紧越过盖缘30并卡在盖式桶体24的开口缘25的下棱40上的夹紧环29时，盖密封件28压靠在开口缘25的环形桥件25a的密封面25b上。
在用桶爪11提升盖式桶23时，其爪11a夹在夹紧环29的下棱29a，爪11的另一爪11b夹在桶盖27的环形通道37上并抵靠在盖缘30的内缘30b上。
使用过的塞式桶1可以这样修复，从塞式桶体2上沿对中于桶轴线13-13的圆断面19切去上底6，而保留上支承环12并形成盖式桶体24的桶颈26上的开口缘25，接着在盖式桶体24的开口缘25区域焊住一水排放孔或多个水排放孔，而后借助夹紧环29将具有密封件28的简易盖27或塞盖固定到盖式桶体24的开口缘25上。

Claims (2)

1、制造塑料塞式桶和盖式桶的方法，其特征在于，吹塑成形具有圆筒形桶壁(3)、下底(4)、上底(6)以及上支承环(12)的塞式桶体(2)，上底(6)具有至少一个带封闭塞口(7a)的桶塞(7)以便充满排空塞式桶(1)，上支承环(12)的横截面呈L形以承接桶爪(11)，为了制造公知的盖式桶(24)，从被冷却的塞式桶体(2)上沿对中于桶轴线(13-13)的圆断面(19)切去上底(6)，而保留支承环(12)，形成盖式桶体(24)桶颈(26)上的开口缘(25)，借助夹紧环(29)将具有密封件(28)的简易桶盖(27)或塞盖固定到塞式桶体(2)的开口缘(25)上。
2、如权利要求1的方法，其特征在于，在塞式桶体(2)的对中于桶轴线(13-13)设置的环形通道(16)的基底(21)冷却后，该环形通道(16)通过支承环(12)，支承环(12)和桶壁(3)之间的过渡部分(17)以及向上弯曲的过渡到具有堆放面(15)的中心基盘(14)的上底(6)的部分(18)形成，穿过塞式桶体(2)的过渡部分(17)至少钻出朝着塞式桶体外侧的一个水排放孔(22)。
CN99103409A 1998-03-17 1999-02-27 制造塑料塞式桶和盖式桶的方法 Expired - Fee Related CN1102900C (zh)

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