CN107427168B - 折叠和打开擦拭物的方法和装置 - Google Patents

折叠和打开擦拭物的方法和装置 Download PDF

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CN107427168B
CN107427168B CN201580069550.1A CN201580069550A CN107427168B CN 107427168 B CN107427168 B CN 107427168B CN 201580069550 A CN201580069550 A CN 201580069550A CN 107427168 B CN107427168 B CN 107427168B
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欧得·奥保什
菲利普拉塞尔·福克斯
朱利安·布兰登琼斯
伊曼纽尔·纳尼则
詹卢卡·焦梅蒂
戴夫·里德
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Abstract

提供了一种用于从基本平整的材料制作三维擦拭物的装置，该装置制作一个基本上平整的在每侧具有褶皱的平面形状的坯件(12)。该折叠的坯件由传送皮带(21)供给到打开站(22)。所述打开站包括一对可移动的夹送辊(34,35)，其可选择性地从传送带抓取各个坯件并将其通过皮带(32,33)传送到一对反转鼓(30,31)。这些坯件从反转鼓中排出，该过程中部分地被打开。将部分打开的坯件送入成形模具(37)上，完成将擦拭物形成其所选择的三维形式的最终过程。

Description

折叠和打开擦拭物的方法和装置
本发明涉及擦拭物。本文中使用的术语“擦拭物”是指纸，布，纸巾，厨房卷纸等的一次性吸收制品类,可由类似纸,布或任何其它合适的材料或材料的组合制成；可是潮湿的，湿的或干的；可以是压花的、打孔的、缝制的或印刷的或其他的表面装饰或处理；可以进行其他的处理,例如通过浸渍香水，洗剂和/或消毒剂。
本发明提供了一种由基本平整的材料制作三维擦拭物的方法，包括在该材料至少设置两个折痕，沿着所述折痕折叠该材料以形成基本平面形状的坯件，并且将所述坯件打开为三维形式。
本发明还提供了一种用于从基本平整的材料制作三维擦拭物的装置，所述装置包括用于将至少两个折痕设置在所述材料中的装置，用于沿着所述折痕折叠所述材料以产生基本上为平面形状的坯件的装置，以及用于将坯件打开成三维形状的装置。
作为示例，现在将参考附图描述本发明的实施例，
其中：图1是根据本发明的制造擦拭物的方法的示意图，
图2示出了用于将坯件形成三维擦拭物的工站，
图3a和3b示出了图2的擦拭物形成站的操作。
建议从一块基本上平整的材料制成具有三维形状的擦拭物。形成的擦拭巾将以其三维形状以嵌套堆叠的形式进行整理和包装在一起。使用适当形状的分配器来容纳具有待使用的上面的擦拭物叠层。
擦拭物的三维形状优选是圆锥形的，分配器保持堆叠物使用时,擦拭物的顶点向上延伸。在根据本发明的一个优选方法中，如图1所示，擦拭物的生产过程以连续的细长材料幅材10开始。幅材10例如从辊子沿箭头A的方向进给到生产线上。在第一操作中，第一折叠台用于沿着其纵向中心线将幅材10折叠成两半。该操作产生了具有折叠边缘11的对折的幅材10。
下一个操作涉及切割和压痕站，以将坯件12从折叠的幅材10中切割出来并将折痕14,15置入其中。这可以在一次操作中方便地实现，例如通过反转鼓和飞刀。切割和压痕站将坯件12切割成半圆形，其直边是幅材10的折叠边缘11，其弯曲侧形成自由边缘13。幅材10的不需要的剩余部分16被方便地送走以进行重新循环。
折痕14,15被配置为在坯件12中从相对侧形成(在图1中，折痕14在坯件12的可见侧形成，而折痕15在相对侧、看不见的侧面形成)。折痕14,15的目的是为了便于坯件12的折叠，并且它们由相对的两侧形成，因为坯件将从相对的两侧折叠，如下所述。
如图1所示，折痕14,15均从坯件12的折叠边缘11的中点径向延伸到自由边缘13。折痕14,15对称地布置在坯件12上，并且在这种情况下，它们各自相对于折叠边缘11具大约45°的角度。这使得成品擦拭物的三维形状具有大约60°的锥角。当然可以理解，折痕的位置可以变化以产生不同的锥角。
下一个操作涉及第二折叠站，其中坯件12沿着其折痕14,15折叠以形成两个褶皱17,18。如上所述，折叠操作在坯件12的一侧上形成一个褶皱17,在另一侧上形成另一个褶皱18。第二折叠台可以方便地使用反转鼓，用空气刀片通过前缘(相对于箭头A的方向)拾起坯件12，以便折叠折痕14以形成褶皱17。反向旋转的吊环臂可用于通过后缘(相对于箭头A的方向)拾取坯件12，以便折叠折痕15以形成褶皱18。
坯件12以基本平整的平面形状离开第二折叠站，但在两侧两次折叠留下褶皱17,18。然后对坯件12进行进一步的操作，它们被打开为三维形式的成品擦拭物19，在这种情况下其为锥形，随后该擦拭物被整理形成叠层20。图2示出了打开站22，用于将坯件12从其基本平整的平面折叠形式转换成成品擦拭物的三维形式。坯件12通过具有真空吸入压力的传送带21方便地输送到打开站22。如图2所示，坯件12被布置成由传送带21将其自由边缘13在其下完全悬挂地保持。这使得坯件12可以被打开站22的机构拾取。
打开站22的机构包括一对以其旋转轴线平行布置的反转鼓30,31。每个反转鼓30,31经由一对皮带32,33连接到相应的夹送辊34,35。夹送辊34,35也以其旋转轴线平行布置。皮带32,33可方便地围绕反转鼓30,31和夹送辊34,35在凹槽中进行运转，从而基本上与圆柱形外表面齐平。反转鼓30,31和/或夹送辊34,35和/或皮带32,33的圆柱形表面优选地是有纹理的和/或适当选择的材料，以便能够提供足够的抓握以使得坯件12变形。为了进一步帮助制造坯件，反转鼓30,31便利地穿有一系列孔39。这使得在每个反转鼓30,31的圆柱形表面处引入空气压力成为可能。在这种情况下，使用真空吸入压力，优选地这使得能够在反转鼓30,31旋转运动的特定阶段选择性地施加。
夹送辊34,35被安装成能够朝向和远离彼此移动。其目的是使得可以选择性地从传送带拾取各个坯件12。在图3a和3b中可以看到夹送辊34,35的操作。
图3a示出了夹紧辊34,35处于打开位置。在该位置，可以看出坯件12在夹紧辊34,35之间自由地通过而没有干涉。应当注意，这种布置使得传送带21有被用于将坯件12供给到生产线中的多个打开站的可能性。
图3b示出了夹紧辊34,35处于关闭位置。在该位置，坯件已经夹在夹送辊34,35之间，并通过移动的皮带32,33进给到反转鼓30,31。然后，坯件沿箭头B的方向从反转鼓30,31之间的辊隙中排出。应注意的是，坯件被定向成使其自由边缘13相对于箭头B的方向前进。这意味着当坯件在反转鼓30,31之间的辊隙中出现时，随着其自由边缘13以类似于降落伞打开的方式吸住空气，其将会有打开的趋势。来自反转鼓30,31和皮带32,33的作用在坯件上的摩擦力将有助于该打开过程，以及选择性地施加的吸入压力。如果需要，可以提供进一步的辅助，例如通过在与箭头B相反的方向上向坯件的自由边缘13上施加空气射流。从其从反转鼓30,31之间的辊隙露出，部分已打开的坯件36被抛到一个圆锥形的模具37。
部分打开的坯件36优选地完全地进入模具37，使得其将精确地占据成品擦拭物所期望的锥形形状。该过程可以被辅助，例如通过使用向模具37中的孔38作用真空吸力。此过程中也可能会使用其他措施，如静电电荷。擦拭物的成品形式可以通过将坯件在模具37上的位置紧实来进一步完善。
方便地，模具37可以是安装在可移动托架上的多个相似的成形模具之一，例如为可旋转的传送带形式。这样可以随着滑架向前索引而依次将坯件送入连续的模具。成品擦拭物随后从成型机进料到管中以形成堆叠。

Claims (19)

1.一种由基本平整的材料制作三维擦拭物的方法，包括：
在该材料至少设置两个折痕，
沿着所述折痕折叠该材料以形成基本平面形状的坯件(12)，并且
将所述坯件(12)打开成三维形式，
其特征在于，
将所述坯件(12)打开成三维形式的步骤涉及使用一对反转鼓(30,31)对其施加动力，在所述一对反转鼓(30,31)之间供给所述坯件(12)。
2.根据权利要求1所述的方法，其特征在于，其中施加到坯件(12)上的动力在其平面形状的平面内。
3.根据权利要求1或2所述的方法，其特征在于，其中，所述坯件(12)设置有自由、即展开的边缘(13)，并且施加到它的动力被施加到自由边缘。
4.根据前述权利要求所述的方法，其特征在于，包括将所述坯件(12)从所述反转鼓(30,31)之间排出到成形模具(37)上。
5.根据前述权利要求中任一项所述的方法，其特征在于，其中所述坯件(12)的打开通过使用真空和/或空气压力。
6.根据前述权利要求中任一项所述的方法，其特征在于，还包括从连续的材料(10)网切割所述坯件(12)。
7.根据权利要求6所述的方法，其特征在于，切割所述坯件(12)和在其中设置所述折痕的步骤，在同一操作中完成。
8.根据前述权利要求中任一项所述的方法，其特征在于，其中所述坯件(12)被以相反方向围绕所述至少两个折痕折叠，以形成位于所述坯件(12)的相对侧上的褶(17,18)。
9.根据前述权利要求中任一项所述的方法，其特征在于，包括从移动的坯件线中选择单个坯件(12)，其中所述选择与所述线的移动方向成直角。
10.一种用于从基本平整的材料制作三维擦拭物的装置，包括：
用于将至少两个折痕设置在所述材料中的装置，
用于沿着所述折痕折叠所述材料以产生基本上为平面形状的坯件(12)的装置，以及
用于将坯件(12)打开成三维形状的装置，
其特征在于，
所述用于将坯件(12)打开成三维形状的装置包括用于对其施加动力的一对反转鼓(30,31)，在所述一对反转鼓(30,31)之间供给所述坯件(12)。
11.根据权利要求10所述的装置，其特征在于，所述一对反转鼓(30,31)配置成在其平面形状的平面内对坯件(12)施加所述动力。
12.根据权利要求10或11所述的设备，其特征在于，所述坯件(12)设置有自由、即展开的边缘(13)，并且所述一对反转鼓(30,31)配置成将施加到所述坯件(12)的动力施加到自由边缘。
13.根据权利要求10至12中任一项所述的装置，其特征在于，其中用于打开坯件(12)的装置包括用于从坯件移动线中选择单个坯件(12)的装置。
14.根据权利要求13所述的装置，其特征在于，其中所述坯件选择装置与坯件线的移动方向成直角运行。
15.根据权利要求13或14所述的装置，其特征在于，其中所述坯件选择装置包括一对可开闭的夹送辊(34,35)。
16.根据权利要求10至15中任一项所述的装置，其特征在于，还包括用于将所述坯件(12)配置为三维形状的成形模具(37)。
17.根据权利要求16所述的装置，其特征在于，还包括用于将所述坯件(12)压靠在所述模具(37)上以设定其三维形状的装置。
18.根据权利要求10至17中任一项所述的装置，其特征在于，其中用于打开所述坯件(12)的装置包括用于施加真空和/或空气压力的装置。
19.根据权利要求18所述的装置,其特征在于，其中所述用于施加真空和/或空气压力的装置有助于将所述坯件(12)保持在所述模具(37)上和/或从其上将所述坯件(12)排出。
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