CN1705873A - 质量检查方法和质量检查设备 - Google Patents

质量检查方法和质量检查设备 Download PDF

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CN1705873A
CN1705873A CNA2003801013545A CN200380101354A CN1705873A CN 1705873 A CN1705873 A CN 1705873A CN A2003801013545 A CNA2003801013545 A CN A2003801013545A CN 200380101354 A CN200380101354 A CN 200380101354A CN 1705873 A CN1705873 A CN 1705873A
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outside surface
transverse sealing
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横手隆人
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Tetra Laval Holdings and Finance SA
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    • G01N21/90—Investigating the presence of flaws or contamination in a container or its contents
    • G—PHYSICS
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Abstract

在检查横向线密封的熔融热塑材料突伸进入内部时，一个目的是提供一种可方便地检测密封边缘上的突起的质量检查方法和质量检查设备，可靠地获得视觉上察觉不到的甚为细微的不均匀度，使得在没有检查差异的情况下可以进行精确可靠的检查。所述质量检查方法包括以下步骤：将由纸卷状包装层压材料形成的容器返回到枕状初始成形的形状；切割容器壁以抽取填充好的食品样品，预备抽取的样品主体，通过检测单元，在边缘外表面的整个长度上，对外表面的不均匀度测量容器内侧上的横向密封区边缘，以及通过分析单元根据检测单元的信号判断横向密封区的可接受性。

Description

质量检查方法和质量检查设备
技术领域
本发明涉及一种用于检查装有果汁和牛奶等液体食品的纸制容器以及类似物品质量的检查方法和检查设备。
背景技术
装有果汁和牛奶等液体食品的最终成型的纸制容器是这样获得的：将具有预定折叠线的纸卷状包装层压材料形成为管状，在管的纵向进行纵向密封，将食品装入管状包装材料内，以预定的间隔下压管状包装材料在横向方向以横向密封进行同样的密封，在横向密封区中间进行切割以获得枕状初始成形，并且密封含有横向密封区的口盖，所述口盖是通过沿折叠线折叠到容器侧壁和容器底面上而形成。
图1显示了一例用于纸制容器的填充包装机的外部轮廓。在该例中所示的填充机将绕在辊型中的包装材料卷1绕出，所述卷在其内层和外层上具有热塑材料层，并通过辊子将其转移到填充机。通过条带施放器3将条形带2粘结到包装材料卷一端。包装材料卷筒纸经由消毒浴4进行消毒。消毒剂用空气刀5去除。通过成型辊子6形成管状包装材料。通过将包装材料的两端折叠而形成重叠。所述重叠通过纵向密封元件8沿纵向密封在管的纵向。液体食品从填充管7装入管中。所述管在向下输送至与包装容器相等长度的同时被密封钳10和与其相对设置的钳11夹于其间。由横向密封在横向形成两个横向密封区。连续形成枕状初始成形12。用刀及其类似物切割连接在一起的枕状初始成形的密封区中间，并且该形成物被分为单个的枕状初始成形13。在最终的折叠器15处通过将分开的枕状初始成形的上下口盖折叠而最终形成包装填充容器14。
图2显示了枕状初始成形13在最终的折叠器15处被折叠的特点。枕状初始成形13由两个横向(横向线)密封区23和纵向密封区26密封。枕状初始成形13具有由折叠线限定的侧壁22、22b和22a(参见图2(a))。
如图2(b)所示，枕状初始成形13的主体沿折叠线形成矩形实体。在边缘上，横向密封区23和口盖24、25形成为直立于容器壁。横向密封区23直立于底面22b和顶面22a。口盖24和25通过脊侧25a和24a与容器壁整体连接。
接着，如图2(c)所示，横向密封区23被折叠后，口盖围绕作为中心的脊侧旋转。容器上侧的口盖24折叠入侧壁22中，而容器底侧的口盖25折叠入底面22b中。
图3显示了矩形的、装有液体食品的固体纸制容器的外部轮廓透视图。容器14具有横向密封区23和从容器壁22和22a以及上壁22a穿过后面的容器壁直到底面的纵向密封26。通过脊侧24a设置折叠的口盖24。
必须在上述密封区进行充分密封以防止容器中所含的液体食品漏出并暴露于外部空气中。然而，如果横向密封上的温度和压力不合适，包装层压材料上的熔融热塑材料可能伸到装有食品的容器内。熔融的物质直接接触所含的液体食品，并由于骤冷而变得易碎，并且层压材料可能从突起位置被打破。为了密封，有必要获得其熔融物质不深入到容器内的横向密封。
接着，检查设备的操作员规则地对由填充包装机制成的液体食品容器取样。对于被取样的容器，通过基本相反于容器最终成型的方法从容器壁剥下口盖，从而将矩形的固体容器变为枕状，即，一种与通过填充包装机的最终折叠器折叠口盖相反的方法。
通过在视觉上测量密封长度和是否存在针孔来检查横向密封，除此此外，横向密封区上容器内侧上的边缘对于边缘外表面整个长度上的外表面不匀坦也可用于检查横向密封。
在常规的横向密封边缘外观检查中，对于由操作员常规取样的容器，在视觉上观察横向密封边缘内侧上的外观，并随后检查是否存在如聚乙烯的热塑树脂从横向密封区突起。因为突起是透明的而不容易发现，并难以可靠地捕获细微的不匀坦缺陷。
在检查横向线密封的熔融热塑材料突伸进入内部时，由于操作员的个体差异而在检查中出现一些差异，从而使检查的可靠性变得更低，并因而需要进行更加精确可靠的检查。
发明内容
本发明的目的是提供一种用于在检查横向线密封的熔融热塑材料突伸进入内部时可轻易地检测到密封边缘上的突起的质量检查方法和质量检查设备。本发明的目的也是提供一种能够可靠地捕捉视觉上察觉不到的甚为细微的不匀瑕疵的方法和设备。本发明的另一目的是提供一种可以进行精确可靠的检查而无检查差异的质量检查方法和质量检查设备。
根据本发明的质量检查方法和质量检查设备为一种用于最终成型的容器的检查方法，所述容器是这样得到的：将具有折叠线的纸卷状包装层压材料形成管形，沿纵向纵向地密封包装材料，将食品装入管形包装材料中，沿横向按照每个预定间隔向包装材料施压以通过横向密封来进行密封，在横向密封区的中间处进行切割以获得枕状的初始成形，并密封通过沿折叠线折叠到容器侧壁和/或容器底面而形成的口盖，所述方法包括：
围绕脊侧将密封的口盖旋转到容器壁以从容器壁剥下口盖，在脊侧处，口盖与容器壁整体连接；
返回到枕状的初始成形的形状；
切割容器壁以取出所填充的食品；
展开切开的容器以预备抽出的样品主体；
通过检测单元，对外表面的不均匀度，在边缘外表面的整个长度上测量容器内侧上的横向密封区边缘；以及
通过分析单元根据检测单元的信号判断横向密封区的可接受性。
在检查横向线密封的熔融热塑材料突伸进入内部时，所述方法可以很容易地检测到密封边缘上的突起。能够可靠地捕获到视觉上察觉不到的甚为细微的不匀瑕疵。允许进行精确可靠的检查而无检查差异。
附图说明
图1为用于纸制包装容器的包装填充机的概括图。
图2的概括图说明了从初始成形形成最终成型的纸制包装容器的配置。
图3为矩形的固体纸制包装容器的概括图。
图4为用于纸制包装容器的包装填充机的横向密封设备的侧面局部剖视图。
图5的透视图显示了根据本发明一个实施例的抽取的样品主体的制作过程。
图6为根据本发明一个实施例的抽取的样品主体的平面和侧面图。
图7的解说图显示了根据本发明一个实施例的检查方法。
图8的曲线图显示了根据本发明一个实施例的检查结果。
图9的平面图显示了根据本发明另一实施例的检查。
图10的前视图显示了根据本发明另一实施例的检查。
图11的放大剖视图显示了根据本发明另一实施例的检查。
具体实施方式
下面详细描述本发明的一个实施例。
本发明的检查方法为一种用于检查最终成型的容器质量的方法，该容器是这样获得的：将具有折叠线的纸卷状包装层压材料形成管形，沿纵向纵向地密封包装材料，将食品装入管形包装材料内，沿横向按照每个预定间隔向包装材料施压并通过横向密封进行密封，在横向密封区中间处进行切割以获得枕状的初始成形，并密封通过沿折叠线折叠到容器侧壁和/或容器底面而形成的口盖。根据本发明一个实施例的检查方法包括围绕脊侧将密封的口盖旋转到容器壁以从所述容器壁剥下口盖，在脊侧处，口盖与容器壁整体连接，并返回到枕状的初始成形的形状。此外，根据本发明该实施例的检查方法包括切割容器壁以取出填充的食品；展开切开的容器以预备抽取的样品主体；通过检测单元，对外表面的不均匀度，在边缘外表面的整个长度上测量容器内侧上的横向密封区边缘；以及通过分析单元根据检测单元的信号判断横向密封区的可接受性。
在根据优选实施例的检查方法中，所述检测单元从多个方向将光发射至横向密封区边缘的外表面上，并且所述分析单元为图象处理单元，其接收从边缘外表面反射或散射的反射/散射光的图象以进行分析处理。
在根据另一优选实施例的检查方法中，所述检测单元将接触元件悬伸在横向密封区边缘的外表面上，并在外表面的整个长度上进行扫描，并且所述分析单元分析边缘外表面和接触元件之间的接触程度。
根据本发明实施例的检查设备为用于检查最终成型的容器质量的设备，该容器是这样得到的：将具有折叠线的纸卷状包装层压材料形成管形，沿纵向纵向地密封包装材料，将食品装入管形包装材料，沿横向按照每个预定间隔向包装材料施压并通过横向密封进行密封，在横向密封区中间处进行切割并获得枕状的初始成形，以及密封通过沿折叠线折叠到容器侧壁和/或容器底面而形成的口盖。根据本发明实施例的检查设备包括：
预处理单元，用于围绕脊侧将密封的口盖旋转至容器壁以从所述容器壁剥下口盖，在脊侧处，该口盖与容器壁整体连接，并用于返回到枕状初始成形的形状；
切割单元，用于切割容器壁以取出所填充的食品；
预备单元，用于展开切开的容器以预备所需的抽样主体；
检测单元，用于在边缘外表面的整个长度上为外表面的不均匀度测量容器内侧上的横向密封区的边缘；以及
分析单元，用于根据来自检测单元的信号判断横向密封的可接受性。
在根据本发明优选实施例的检查设备中，所述检测单元是从多个方向发射至横向密封区边缘的外表面上的照射光，并且所述分析单元为图象处理单元，其接收由边缘外表面反射或散射的反射/散射光的图象，并进行分析和处理。
在根据本发明优选实施例的检查设备中，所述检测单元为接触元件，该接触元件被悬伸在横向密封区边缘的外表面上并在外表面的整个长度上进行扫描，并且所述分析单元为接触式分析处理单元，用于分析并处理边缘外表面和接触元件之间的接触程度。
下面参照附图描述本发明的一种实施例。
在本实施例中，质量检查方法的对象为如图1所示的容器。具有预定折叠线绕成卷状的包装材料卷1被卷出。通过成型辊子6形成管状包装材料。将包装材料的两端折叠并形成重叠。所述重叠通过纵向密封元件8沿纵线纵向地密封。食品从填充管7装入管状包装材料中。所述管被向下送过相当于一个包装容器的长度，然后被密封钳10和相对设置的钳11夹住。通过沿横向的横向密封形成两个横向密封区。连续形成枕状的初始成形12。用刀之类的物件切割连接在一起的枕状初始成形的密封区中间。得到单个的枕状初始成形13。将在最终的折叠机15处被分开的枕状初始成形13的上下口盖被弯曲。形成最终成型的包装填充容器14。
图4显示了横向密封设备细节的局部横截面图。在本实施例中，在装有食品的管状包装材料1被向下送过相等于一个包装容器长度的同时，被两对成型钳41夹住并形成大致的容器形状。它被两对密封钳10和对面设置的钳11夹住，沿横向被横向地密封并随后形成两个横向密封区。用刀42切割连接在一起的枕状初始成形的密封区中间，并且该形成物被分成单个的枕状初始成形13。
所得容器为矩形立体的填充液体食品的纸制容器14，如图3所示。容器14具有从折叠的横向密封区23去到底面的纵向密封区26、容器壁22和22a，并且顶壁22a经过背部上的容器壁兼设有被折叠横过脊侧24a的口盖24。
在根据本发明的实施例中，上述容器通过将密封到容器壁的口盖围绕脊侧旋转而返回到枕状初始成形的形状，在脊侧处口盖和容器壁整体连接，并以基本相反于用图2所示的填充包装机最终折叠器折叠口盖的方法从容器壁剥下。
接下来，用切割单元切割容器壁，并取出填充的食品，以及随后枕状初始成形变为平板形状。如图5所示，平板状初始成形的横向侧部被切开，并且在横向切开一侧容器壁22的中间。所述切开的容器基本上展开为平板形或初始成形，并随后采用预备单元预备如图6(a)(b)所示的样体71。
在根据本发明实施例的质量检查中，所述检测单元将接触元件悬伸在横向密封区边缘的外表面上并在外表面的整个长度上进行扫描，并且所述分析单元分析边缘外表面和接触元件之间的接触程度。
在本实施例中，接触元件用于检查横向线密封的熔融热塑材料突伸进入内部。图7的透视图显示了检查的概况。接触元件75对容器壁22被展开的抽取的样品主体71横向密封区23上的容器内侧边缘23a进行扫描。即，检测单元的接触元件75被悬伸在横向密封区23的边缘23a外表面上并在外表面的整个长度上进行扫描。如果横向线密封上存在熔融热塑材料的突起，接触元件75接触并进行检测。所述分析单元(未示出)分析边缘外表面和接触元件之间的接触程度。
图8中扫描距离L和边缘23a的电阻R之间的曲线图显示出信号从接触元件75传递到分析单元。突起23b的存在致使电阻在该距离位置处急剧增加，并且所述分析单元检测到突起的存在。
在根据本发明第二实施例的质量检查中，所述检测单元将光发射至横向密封区边缘的外表面上，并且所述分析单元为图象处理单元，其接收从边缘外表面反射或散射的反射/散射光的图象，以进行分析处理(图象处理)。
图9显示了第二实施例的质量检查平面图。图10显示了第二实施例的质量检查前视图。在本实施例中，由4个侧面光源72从侧面照射抽取的样品主体71的横向密封区23边缘32a上的容器内侧上的表面，并由上部光源74从上方进行照射。图象处理单元(未示出)通过CCD相机73接收从边缘的外表面反射或散射的反射/散射光的图象并进行图象处理。
图11显示了一个放大的横截面图。由侧面光源72从侧面，并由上部光源74从上方照射抽取的样品主体71的横向密封区上的边缘32a表面。图象处理单元通过CCD相机73接收从边缘的外表面反射或散射的反射/散射光的图象并进行图象处理。
如上所述，本发明可以获得以下有利效果。根据本发明的质量检查可以在检查横向密封上的熔融热塑材料突伸进入内部时轻易地检测到密封边缘的突起。
根据本发明的质量检查可以可靠地捕获到视觉上察觉不到的甚为细微的不均匀度。根据本发明的质量检查可以进行精确可靠的检查，无检查差异。
工业实用性
所述质量检查方法和检查设备用于检查纸制容器或装有果汁和牛奶等液体食品的类似物品的质量。

Claims (6)

1、一种用于检查最终成型的容器质量的质量检查方法，该容器是这样得到的：将具有折叠线的纸卷状包装层压材料形成管形，沿纵向纵向地密封包装材料，将食品装入管形包装材料，沿横向按照每个预定间隔向包装材料施压并通过横向密封进行密封，在横向密封区的中间处进行切割并获得枕状初始成形，以及密封通过沿折叠线折叠到容器侧壁和/或容器底面而形成的口盖，所述方法包括：
围绕脊侧将密封的口盖旋转到容器壁以从容器壁剥下口盖，在脊侧处，口盖与容器壁整体连接；
返回到枕状初始成形的形状；
切割容器壁以取出填充的食品；
展开切开的容器以预备抽取的样品主体；
通过检测单元，对检测外表面的不均匀度，在边缘外表面的整个长度上测量容器内侧上的横向密封线的边缘；以及
通过分析单元根据来自检测单元的信号判断横向密封区的可接受性。
2、根据权利要求1的质量检查方法，其中，所述检测单元从多个方向将光发射至横向密封区边缘的外表面上，并且所述分析单元为图象处理单元，其接收从边缘外表面反射或散射的反射/散射光的图象以进行分析处理。
3、根据权利要求1的质量检查方法，其中，所述检测单元将接触元件悬伸在横向密封区边缘的外表面上并在外表面的整个长度上进行扫描，以及所述分析单元分析边缘外表面和接触元件之间的接触程度。
4、一种用于检查最终成型的容器质量的质量检查设备，该容器是这样得到的：将具有折叠线的纸卷状包装层压材料形成管形，沿纵向纵向地密封包装材料，将食品装入管形包装材料，沿横向按照每个预定间隔向包装材料施压并通过横向密封进行密封，在横向密封区的中间处进行切割并获得枕状初始成形，以及密封通过沿折叠线折叠到容器侧壁和/或容器底面而形成的口盖，所述设备包括：
预处理单元，用于围绕脊侧将密封的口盖旋转到容器壁以从容器壁剥下口盖，在脊侧处，口盖与容器壁整体连接，并用于返回到枕状初始成形的形状：
切割单元，用于切割容器壁以取出所填充的食品；
预备单元，用于展开切开的容器以预备所需的抽取样品主体；
检测单元，用于在边缘外表面的整个长度上测量容器内侧上的横向密封线的边缘，以检测外表面的不均匀度；以及
分析单元，用于根据来自检测单元的信号判断横向密封区的可接受性。
5、根据权利要求4的质量检查设备，其中，所述检测单元从多个方向将光发射至横向密封区边缘的外表面上，并且所述分析单元为图象处理单元，其接收从边缘外表面反射或散射的反射/散射光的图象，并进行分析和处理。
6、根据权利要求4的用于检查质量的质量检查设备，其中，所述检测单元为悬伸在横向密封区边缘外表面上的接触元件并在外表面的整个长度上进行扫描，并且所述分析单元为接触式分析处理单元，用于分析并处理边缘外表面和接触元件之间的接触程度。
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CN107490578B (zh) * 2016-06-12 2020-10-09 英泰克普拉斯有限公司 半导体元件检查装置
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CN112888555B (zh) * 2018-10-31 2023-04-04 利乐拉瓦尔集团及财务有限公司 用于包装的密封部分的质量评估的方法及其装置

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US20060175560A1 (en) 2006-08-10
EP1553404A1 (en) 2005-07-13
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AU2003271120A1 (en) 2004-05-04

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