CN107208242B - 用于给金属带覆层的方法和装置 - Google Patents

用于给金属带覆层的方法和装置 Download PDF

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CN107208242B
CN107208242B CN201580063037.1A CN201580063037A CN107208242B CN 107208242 B CN107208242 B CN 107208242B CN 201580063037 A CN201580063037 A CN 201580063037A CN 107208242 B CN107208242 B CN 107208242B
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metal strip
blowing
coating
correction roller
slot
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CN107208242A (zh
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D.方丹
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Fangdan Construction Machinery Co Ltd
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    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
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Abstract

本发明涉及一种用于以起初还是液态的覆层材料例如锌给金属带覆层的方法和装置。在覆层期间，被覆层的金属带经过辊子对，其中，辊子对的辊子中的一个可作为校正辊子相对另一个调整，以便消除金属带的可能的拱曲。接着，金属带经过用于吹除覆层的多余部分的吹除机构。为了即使在辊子对的校正辊子调整完成的情况下也防止在金属带上的覆层的不均匀的厚度分布，根据本发明通过吹除机构的合适的移位将金属带的实际位置调节到在吹除机构的槽口中规定的理论‑中间位置上。

Description

用于给金属带覆层的方法和装置
技术领域
本发明涉及一种用于以起初还是液态的覆层材料例如锌给金属带覆层的方法和装置。该方法和装置尤其用于金属带的火焰镀锌(Feuerverzinken)。
背景技术
这样的用于给金属带覆层的装置在现有技术中原则上已知，如此例如从文件DE10 2009 051 932 A1中。该文件具体公开了一种覆层容器，其填充有液态的覆层材料。为了覆层将金属带导引通过带有覆层材料的容器。在离开覆层容器之后，金属带经过布置在覆层容器之上的用于将还是液态的覆层材料的多余部分从金属带的表面吹除的吹除机构(Abblaseinrichtung)。在吹除机构之上布置有由吹除机构支持的电磁的稳定机构，用于使金属带在离开覆层容器和吹除机构之后稳定。电磁的稳定机构尤其引起，该带在整个装置的中心平面中被保持在中间并且防止或至少减小了金属带在经过覆层容器和吹除机构期间的振动。
不仅吹除机构而且电磁的稳定机构分别具有槽口(Schlitz)，金属带被引导通过该槽口。为了实现在金属带的上侧和下侧上覆层材料的均匀的厚度或厚度分布，强制性地需要金属带在规定的理论-中间位置中穿过吹除机构的槽口。只有这样才确保吹除机构的吹除喷嘴在金属带的上侧和下侧上的作用相同并且产生在金属带上覆层材料的期望的均匀的厚度分布。
理论-中间位置尤其通过金属带的宽侧和窄侧至吹除机构的相对而置的喷嘴的优选地均匀的距离来限定且尤其由此来限定，即金属带相对于槽口或喷嘴的纵向取向(Laengsausrichtung)不倾斜、扭转或太强地拱曲。
在实践中然而可发生，金属带在离开覆层容器后强烈地拱曲。如所述，这样的拱曲尤其对于经过吹除机构是不期望的。因此传统上通过在金属带进入吹除机构之前相对金属带调整校正辊子来抵抗该拱曲。然而这具有该缺点，即由此实际位置(金属带以该实际位置经过吹除机构的槽口)会偏离于理论-中间位置，这会导致上面所说明的覆层的不均匀的厚度分布的问题。
德国的公开文献DE 10 2007 042 897 A1公开了一种利用用于以覆层材料例如锌给金属带覆层装置的方法。为了该目的，金属带被导引通过覆层容器，该覆层容器填充有液态的覆层材料，其中，覆层材料附着在金属带的表面处。在离开覆层容器之后，该金属带经过用于将还是液态的覆层材料的多余部分从金属带的表面吹除的吹除机构的槽口。此外，设置有拱曲传感器用于检测金属带在离开覆层容器之后的实际-拱曲。假如所检测的实际-拱曲超过了规定的允许的拱曲阈值(Woelbungs-Schwellenwert)，将校正辊子相对金属带调整，以使其平整。还公开了操控该吹除机构。
文件DE 43 00 868 C1教导借助于调整驱动器(Verstellantrieb)将吹除机构定位成使得在喷嘴缝与带表面之间的间距保持恒定。吹除机构的位置的相应的控制或调节根据金属带的实际的位置(其由单独的测量机构持续地检测)进行。
文件WO 94/02658 A1教导了，至少暗含地设置有拱曲传感器用于在吹除机构上方检测金属带的拱曲。如果确定有太强的拱曲使得可能存在带与吹除机构之间接触的风险，使吹除机构横向于金属带的平面行驶，一直直到在金属带的整个宽度上又维持金属带与吹除机构之间的最小间距。
文件JP 2003 113460 A设置了一(数值)布置在电磁的稳定机构中的所谓的移动传感器，其构造成检测在电磁的稳定机构的槽口中金属带的偏心的程度或弯曲状态。根据金属带的偏心的程度，给电磁的稳定机构的电磁体通电，以便这样产生磁力到金属带上，使得金属条带的路径位置和弯曲被改正。稳定辊和校正辊在金属池中借助于过程控制装置根据初始值来操控或定位。刮除器喷嘴(Abstreiferdüse)也相应于数学确定的偏心度指数来操控和定位，亦即如此使得金属带的偏心度或指数处于规定的阈值之内或之下。使刮除器喷嘴和电磁块或者说电磁的稳定机构分别平行地移动相同的程度。
发明内容
本发明目的在于将用于给金属带覆层的开头所提及的类型的已知的方法和已知的装置改进成使得防止由于校正辊子的调整在金属带上覆层的不均匀的厚度分布。
该目的在方法技术上通过在权利要求1中所要求保护的方法来实现。
通过所要求的吹除机构移位成使得金属带在吹除机构的槽口中又处于规定的理论-中间位置中，有利地实现防止由于校正辊子的调整或由于校正辊子的调整的变化在金属带上覆层的不均匀的厚度分布。
根据第一实施例，除了校正辊子的调整之外还可将之前所检测的金属带的实际位置与其理论-中间位置的偏差用作对于吹除机构的移位的标准或度量。该标准提供以下优点，即关于吹除机构的必要的移位存在相当精确的基准点(Anhaltspunkt)。
根据另一实施例设置成借助于布置在吹除机构上方的电磁的稳定机构使金属带在离开覆层容器和吹除机构之后稳定尤其以防不期望的振动。典型地，稳定机构机械地支撑在前置的吹除机构上。电磁的稳定机构还被申请人称为动态电磁覆层优化器(DEMCO)。
本发明的目的此外在装置技术上通过一种根据权利要求4的装置来实现。该解决方案的优点相应于上面关于所要求保护的方法所提到的优点。该装置的有利的设计方案是从属权利要求的内容。
附图说明
说明书附有两个图，其中：
图1以总视图示出了根据本发明的装置；并且
图2示出了对吹除机构的槽口的俯视图。
具体实施方式
接下来参考所提及的附图以实施例的形式详细地来说明本发明。在两个图中相同的技术元件标有相同的附图标记。
图1示出了根据本发明的用于以液态的覆层材料300例如锌给金属带覆层200的装置100。为了该目的，将起初还未覆层的金属带200在输送方向R上导引到覆层容器110中，覆层容器110填充有液态的覆层材料。在覆层容器110内借助于转向辊子115使金属带200转向，使得金属带向上离开覆层容器。在经过覆层容器后还是液态的覆层材料附着在金属带200处。
在金属带200的输送方向R上有一辊子对后置于转向辊子115，被覆层的金属带被引导在该辊子对之间穿过。该辊子对典型地在覆层容器110内布置成使得在执行覆层过程时其被覆层材料300包围。辊子中的一个可作为校正辊子160相对辊子对中的另一个辊子调整，以便在存在不期望的拱曲的情况下使金属带平整。为了该目的，借助于拱曲传感器154来检测金属带200的拱曲的程度并且与规定的拱曲-阈值相比较。该比较可在控制机构190中实现。如果拱曲的程度大于拱曲阈值，则由控制机构190操控相对金属带来调整校正辊子。
在金属带的输送方向R上吹除机构120后置于辊子对，该吹除机构张开槽口122，金属带200被引导通过该槽口。借助于吹除机构将多余的覆层材料从金属带200的表面吹除。
为了在金属带200的上侧和下侧上均匀地实现吹除，重要的是金属带200在规定的理论-中间位置128中经过吹除机构120的槽口122，如该位置在图2中在X方向上以实线的形式所示。该理论-中间位置尤其特征在于至吹除机构120的槽口122的内边缘的均匀的间距或间距分布。除了所期望的规定的理论-中间位置之外，在图2中还将金属带的可能的不期望的实际-位置作为虚线绘出。如此，对于金属带不期望的实际-位置例如在于，金属带相对于理论-中间位置扭转或在Y方向上平行地移动。
又参考图1，在吹除机构120之上可识别出电磁的稳定机构140，该稳定机构在其方面具有槽口142，金属带200同样被引导通过该槽口。在此还适用，金属带200优选地在规定的理论-中间位置128中经过槽口142，如在图2中所示，由此由电磁的稳定机构140所提供的力能够以期望的方式均匀地稳定地作用于金属带200。
为了检测金属带200的实际-位置与在吹除机构200的槽口122中规定的理论-中间位置的偏差，设置有位置传感器。另外设置有调节机构180，用于通过借助于移位机构130使吹除机构120移位将金属带200的实际-位置调节到在吹除机构200的槽口122中规定的理论-中间位置上，如上面参考图2所述。该移位在横向于金属带的输送方向R的平面中实现。该调节响应于由位置传感器152所检测的金属带200的实际-位置与理论-中间位置的偏差进行。可选地，该调节还可在附加地考虑由拱曲传感器154所检测的金属带的拱曲的程度的情况下进行。
位置传感器152和拱曲传感器154是金属带-检测机构150的两个部分。位置传感器152和拱曲传感器154的功能根据一实施例可由唯一的典型地激光支持的传感器机构(也简称“激光”)来实现；位置传感器152和拱曲传感器154那么形成以传感器机构或金属带-检测机构的形式的结构单元。
根据第一备选方案，吹除机构120的移位可根据所检测的金属带的实际-位置与在吹除机构200的槽口122中规定的理论-中间位置的偏差实现。换言之：如果确定了金属带200不在理论-中间位置128中经过槽口122，则借助于移位机构130使吹除机构120移位成使得金属带又在规定的理论-中间位置128中经过吹除机构的槽口122，以便确保期望的均匀的覆层。
根据第二备选方案或补充地，吹除机构120的移位还可在考虑由校正辊子-检测机构165所检测的校正辊子160的调整位置或其变化的情况下实现。为了该目的，校正辊子-检测机构165的出口还联结到调节机构180的入口上。以该方式，将鉴于在覆层时所期望的均匀性最大化来改进吹除机构的移位。校正辊子-检测机构165可构造成两个编码器的形式，其中的相应一个位于校正辊子160的相应驱动器上。
金属带-检测机构和校正辊子-检测机构150、165构造成优选地识别出金属带的实际-位置与期望的理论-中间位置的所有可考虑的偏差。对此尤其包括金属带在x方向或y方向上的(平行)移动或扭转，如上面参考附图2所述。相应地，移位机构130在由调节机构180合适地操控下构造成使吹除机构120在横向于金属带的输送方向R的平面中以任意的方式行驶，尤其(平行地)移动或扭转，以实现金属带在理论-中间位置经过。移位机构130示出为活塞-缸-单元就此而言仅是示例性的、而非限制性的。
附图标记清单
100 装置
110 覆层容器
115 转向辊子
120 吹除机构
122 吹除机构的槽口
128 金属带在吹除机构或电磁的稳定机构中的理论-中间位置
130 移位机构
140 电磁的稳定机构
142 电磁的稳定机构的槽口
150 金属带-检测机构
152 位置传感器
154 拱曲传感器
160 校正辊子
165 校正辊子-检测机构
180 调节机构
190 控制机构
200 金属带
300 覆层材料
R 金属带的输送方向
X 在理论-中间位置中金属带的宽度方向
Y 横向于由金属带所展开的平面的方向
Z 垂直于x-y平面的方向。

Claims (6)

1. 一种用于以覆层材料(300)给金属带覆层(200)的方法，其中，所述方法具有以下步骤：
将待覆层的所述金属带(200)导引通过覆层容器(110)，其填充有液态的覆层材料(300)，其中，所述覆层材料附着在待覆层的所述金属带的表面处；以及
将被覆层的所述金属带(200)导引通过在所述金属带(200)的输送方向(R)上后置于所述覆层容器(110)的用于将还是液态的所述覆层材料(300)的多余部分从所述金属带的表面吹除的吹除机构(120)的槽口(122)；
检测在离开所述覆层容器(110)之后所述金属带(200)的实际-拱曲；并且
如果所述实际-拱曲的程度超过规定的允许的拱曲-阈值，相对所述金属带(200)调整布置在所述覆层容器(110)内的校正辊子(160)以使所述金属带平整，其中，由于所述校正辊子(160)的调整所述金属带(200)在所述吹除机构(120)的槽口中的实际-位置改变；
其特征在于以下步骤：
通过使所述吹除机构在横向于所述金属带的输送方向的平面中移位将所述金属带(200)的实际位置调节到在所述吹除机构(120)的槽口(122)中的规定的理论-中间位置上；
检测所述校正辊子(160)的调整位置或其变化；以及
在考虑所述校正辊子(160)的调整位置的情况下实现所述吹除机构(120)的移位。
2.根据权利要求1所述的方法，
其特征在于，
检测所述金属带(200)的实际-位置与其在所述吹除机构(120)的槽口(122)中的理论-中间位置的偏差；并且
根据所检测的偏差实现所述吹除机构(120)的移位。
3.根据权利要求1所述的方法，其特征在于，
借助于布置在所述吹除机构之上的电磁的稳定机构(140)使所述金属带(200)在离开所述覆层容器(110)和所述吹除机构(120)之后稳定。
4. 一种用于以覆层材料(300)给金属带(200)覆层的装置(100)，其具有：
带有校正辊子(160)的覆层容器(110)，其中，所述覆层容器(110)能够填充有液态的覆层材料，用于导引所述金属带(200)穿过，并且其中，所述覆层材料附着在待覆层的金属带(200)的表面处；以及
在所述金属带的输送方向(R)上后置于所述覆层容器(110)的带有槽口(122)的吹除机构(120)，用于导引所述金属带(200)穿过和用于将还是液态的所述覆层材料(300)的多余部分从所述金属带的表面吹除；
拱曲传感器(154)，用于检测所述金属带(200)在离开所述覆层容器(110)后的实际-拱曲；和控制机构(190)，用于当所述实际-拱曲的程度超过规定的允许的拱曲-阈值时相对所述金属带(200)调整所述校正辊子(160)；
其特征在于
调节机构(180)，用于通过借助于移位机构(130)使所述吹除机构(120)在横向于所述金属带的输送方向的平面中移位将所述金属带(200)的实际-位置调节到在所述吹除机构(122)的槽口(122)中的规定的理论-中间位置(128)上；以及
校正辊子-检测机构(165)，用于检测所述校正辊子(160)的调整位置或其变化；
其中，所述吹除机构(120)的移位在考虑所述校正辊子(160)的调整位置的情况下实现。
5.根据权利要求4所述的装置，
其特征在于，
设置有位置传感器(152)，用于检测在穿过所述吹除机构(120)的槽口(122)时由于所述校正辊子相对所述金属带的调整所述金属带(200)的实际-位置相对于所述理论-中间位置(128)的偏差；并且
所述吹除机构(120)的移位根据所检测的偏差实现。
6. 根据权利要求4或5中任一项所述的装置，
其特征在于
布置在所述吹除机构之上的电磁的稳定机构(140)，用于使所述金属带(200)在离开所述覆层容器(110)和所述吹除机构(120)之后稳定。
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