CN103298697B - 用于将标签施加至物品的方法 - Google Patents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
- B65C3/00—Labelling other than flat surfaces
- B65C3/06—Affixing labels to short rigid containers
- B65C3/08—Affixing labels to short rigid containers to container bodies
- B65C3/14—Affixing labels to short rigid containers to container bodies the container being positioned for labelling with its centre-line vertical
- B65C3/16—Affixing labels to short rigid containers to container bodies the container being positioned for labelling with its centre-line vertical by rolling the labels onto cylindrical containers, e.g. bottles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
- B65C3/00—Labelling other than flat surfaces
- B65C3/06—Affixing labels to short rigid containers
- B65C3/08—Affixing labels to short rigid containers to container bodies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
- B65C3/00—Labelling other than flat surfaces
- B65C3/06—Affixing labels to short rigid containers
- B65C3/08—Affixing labels to short rigid containers to container bodies
- B65C3/14—Affixing labels to short rigid containers to container bodies the container being positioned for labelling with its centre-line vertical
- B65C3/16—Affixing labels to short rigid containers to container bodies the container being positioned for labelling with its centre-line vertical by rolling the labels onto cylindrical containers, e.g. bottles
- B65C3/163—Affixing labels to short rigid containers to container bodies the container being positioned for labelling with its centre-line vertical by rolling the labels onto cylindrical containers, e.g. bottles where the label is of the wrap-around type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
- B65C9/00—Details of labelling machines or apparatus
- B65C9/08—Label feeding
- B65C9/18—Label feeding from strips, e.g. from rolls
- B65C9/1803—Label feeding from strips, e.g. from rolls the labels being cut from a strip
- B65C9/1815—Label feeding from strips, e.g. from rolls the labels being cut from a strip and transferred by suction means
- B65C9/1819—Label feeding from strips, e.g. from rolls the labels being cut from a strip and transferred by suction means the suction means being a vacuum drum
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Abstract
本发明涉及一种用于将标签施加至沿物品路径行进的物品的方法,所述标签在输入位置处被接收在可移动的表面上以保持在所述表面上,同时所述标签被涂上胶水并通过所述表面的运动而前进至输出位置,在所述输出位置处将所述标签转移至所述物品;所述物品在沿所述路径以速度行进的同时围绕轴线以切向速度旋转;所述方法包括:-为所述表面的至少三个部分提供单独的且可控制的真空装置以保持所述标签;-至少在所述标签在所述输入位置与所述输出位置之间以标签加工速度前进的同时,相应地将所述标签的前缘保持在所述三个部分中的第一部分处并将所述标签的后缘保持在所述部分中的第二部分处;所述标签的中段面向所述部分中的第三部分;-将所述标签转移到所述物品上;其特征在于,将所述标签转移到所述物品上包括:-当所述第一部分到达所述输出位置时,减少所述表面的所述第一部分处的所述真空装置的应用;以及-中断所述表面的所述第三部分处的所述真空装置的应用;所述标签的所述后缘被保持在所述表面的所述第二部分处;所述加工速度大于由所述切向速度和所述行进速度的组合产生的速度。
Description
技术领域
本发明涉及一种用于将标签施加至沿物品路径(例如在贴标签机中)行进的物品(诸如瓶子,壶和罐等)的方法。
更具体来说,本发明涉及一种施加这样类型的标签的方法,即,这种标签以适当的长度从标签材料的辊切断,然后胶合并转移至容器的表面上。
背景技术
用于自动执行这些操作的贴标签机在本领域中是熟知的,并且其广泛用在包装行业中。
在这些机器中,容器通常由传送带沿物品路径运送,以朝着贴标签台前进。同时,将标签材料的带(web,网)从辊式供给组供给至真空滚筒,从而使所述卷与切割装置接触,以切割成合适长度的标签。随后,当标签由真空滚筒提供时,将胶水施加在标签上,例如通过上胶滚筒,喷洒和注射器系统等。最后将涂上胶水的标签从真空滚筒转移至容器。
为了恰当地执行这些操作,通过将标签保持在真空滚筒的表面(即,通过以受控制的方式将真空施加于标签上)以进行对标签的准确处理。为了达到此目的,真空滚筒的表面包括可以与真空源流体连接的多个孔。
具体来说,这种贴标签工序通常用于挠性容器,诸如PET的瓶,其通常用于餐饮业。
目前,正在努力使PET容器轻量化,特别是在饮料行业中,以降低家庭包装废物,尤其是来自零售部门的。
事实上,使饮料包装轻量化提供了一种从源头将废物减到最少并降低原材料加工和分配成本的有效方法。特别地,减少在使树脂干燥和使PET熔化以制成预定型件中消耗的能量,于是瓶子直接与其重量有关。因此,能量消耗的潜在减少与可避免被加工的重量成比例。
PET瓶的重量主要由瓶的性能要求和瓶颈和瓶底的规格决定。
特别地,瓶颈设计受处理需求(例如,在填充操作过程中)以及所使用的封闭方式影响。不同的瓶颈瓶口具有与其设计特征相关的不同重量。
瓶底的设计和重量主要与对承受内压的要求有关,所以与用于填充有碳酸饮料的瓶子相比,水瓶仍然可以具有更薄且因此更轻的瓶底。
通常,PET瓶的中段体因此已经成为操纵设计以用于轻量化的显著焦点,因为认为在这方面具有较少的严格要求。实际上,已通过在吹塑步骤过程中进行更好的材料分配、通过使用新的PET树脂成分以及对吹塑机中的预成型加热的改善来实现轻量化。
然而,轻质PET瓶具有的缺点在于,它们表现出独特的蠕变性能,即,它们在填充(尤其是用碳酸产品)之后随着时间十分显著地膨胀。塑料为粘弹性材料,所以它们继续响应于随着时间施加的压力,即使是在完成填充和贴标签操作之后。
可惜,根据本领域中已知的贴标签方法施加至轻质瓶的中段体的表面上的标签或者其他包裹式包装在上述逐渐膨胀时很可能被严重地损坏。
因此在本领域中需要一种用于处理标签并将标签施加至沿物品路径行进的物品的方法,从而可以以简单且廉价的方式克服上述缺点。
更具体地是,需要一种用于处理标签并将标签施加至物品的方法,从而可有效地对轻质PET瓶进行贴标签,而使与蠕变相关的膨胀大体上不会影响将标签施加和定位于瓶的中段体的表面上的精度。
本发明的公开
因此本发明的一个目的是提供一种用于将标签施加至物品的方法,其满足上述需求中的至少一个。
该目的通过根据本发明所要求保护的一种用于将标签施加至物品的方法来实现。
本发明提供了一种用于在贴标签机中将标签施加至沿物品路径行进的物品的方法,所述标签在输入位置处被接收在可移动的表面上以保持在所述表面上,同时所述标签被涂上胶水并通过所述表面的运动而前进至输出位置,在所述输出位置处将所述标签转移至所述物品;所述物品在沿所述路径以行进速度行进的同时围绕旋转轴线以切向速度旋转;所述方法包括:-为所述表面的至少三个部分提供单独的且能控制的真空装置,以用于将所述标签保持在所述表面上;-至少在所述标签在所述输入位置与所述输出位置之间以标签加工速度前进的同时,通过所述真空装置的应用将所述标签的前缘保持在所述三个部分中的第一部分处并将所述标签的后缘保持在所述部分中的第二部分处;所述标签的中段面向所述部分中的第三部分;-将所述标签转移到所述物品上;其特征在于,将所述标签转移到所述物品上的步骤包括:-当所述第一部分到达所述输出位置时,减少所述表面的所述第一部分处的所述真空装置的应用;以及-中断所述表面的所述第三部分处的所述真空装置的应用;将所述标签的所述后缘被保持在所述表面的所述第二部分处;所述加工速度大于由所述切向速度和所述行进速度的组合产生的速度。
附图的简述
将参考附图以举例的方式说明本发明的非限制性实施方式,其中:
图1示出了贴标签台的示意图,在该贴标签台中处理一系列标签并且将标签施加至沿着物品路径前进的容器的表面上。
图2示出了图1的真空滚筒的透视示意图。
图3示出了图1和图2的真空滚筒的一部分的较大比例尺的示意详图;以及
图4至图6示出了根据本发明的方法的处于三个连续操作位置中的图1的贴标签台的示意图。
用于实现本发明的最佳模式
图1中的标号1作为一个整体表示贴标签机的贴标签台。贴标签台1适用于当所述物品3沿着物品路径P前进时处理标签、将标签转移和施加至各自的物品3,或者更具体地是容器,诸如瓶(本身已知并且没有示出)。特别地,贴标签台1包括用于处理和转移标签2的真空滚筒4。
至少在物品路径P的一部分上,物品3由传送带50运送,该传送带包括关于旋转轴线A等距地隔开的多个支撑板51,物品沿传送带50的外缘安装并且由传送带沿大致圆形路径移动。
每个支撑板51又可相对于各自的轴线A’旋转,轴线A’平行于传送带的轴线A,使得物品3在它们沿着物品路径P的大致圆形部分前进时旋转。
如图1示意性所示,标签材料的带5由辊式供给组(没有示出)供给至切割单元6,该切割单元包括已知类型的刀具盘体(cutter drum)7和切割装置8。标签2以大致矩形的标签材料的长度而获得,在带的前缘从刀具盘体7转移至真空滚筒4并接合切割装置8之后从带5切断标签。
因此真空滚筒4在邻近切割单元6的输入位置I处接收一系列标签2,并且在输出位置O处将所述一系列标签2转移至物品3,该输出位置关于真空滚筒4的旋转轴线A”布置在距离输入位置I的给定角距离处。
如进一步参考图2所示,真空滚筒4在外围包括适合于接合标签2的侧面9。侧面9包括具有与内部通道11(图3中示出)连通的多个通孔10的至少一个第一部分9a。这些通道11可通过存在于非旋转的基座13上的合适的孔或歧管12连接至真空源(没有示出),真空滚筒4在该基座上被支撑和旋转。换句话说,当旋转的真空滚筒4到达所述通道11与所述孔或歧管12对准的位置时,将真空施加在所述第一部分9a的表面上。
在图2示出的实施方式中,三个第一部分9a存在于真空滚筒4上,然而,可提供不同数量的第一部分9a,这取决于机器的容量和标签的长度,所以可以提供多于或少于三个的第一部分9a。
如图2所示,两个衬垫14a,14b设置在侧面9的至少一个第一部分9a的两端处。衬垫14a,14b稍微从侧面9突出并且被设计为在使用中分别接合于标签2的前端和后端。为了达到此目的,衬垫14a,14b也存在与通道11连通的多个通孔以供应真空。
事实上,衬垫14a和14b限定滚筒4的外围的在此发生标签转移的区域。
真空滚筒4的侧面9还包括至少一个通常称作“中间衬垫”区域的第二部分9b,该第二部分在相关的一对衬垫14b和14a之间延伸。在图2所示的实施方式中,三个第二部分9b存在于真空滚筒4上,这些第二部分关于轴线A”彼此在角度上等距地隔开,并且设置有也可与非旋转的基座中的孔12连接的通孔。
换句话说,考虑到真空滚筒4的旋转方向(此方向在图1中用交叉线箭头示出),每个部分9a从各自的衬垫14a延伸至各自的衬垫14b,而相对应的部分9b从下游的衬垫14b延伸至下一衬垫14a。
如以上参考第一部分9a所述,设置在真空滚筒4的侧面中的第二部分9b的总数量也可相应地改变,这取决于贴标签机的容量,以及甚至是取决于待加工的标签2的长度,最小数量为1。
如图2中可见,每个部分9b都具有围绕轴线A”的比相关的部分9a的角度延伸小的角度延伸,并且在使用中可达到在输入位置I处开始吸引相关的标签2的目的,使得这一标签2于是被接收在直接位于上游的部分9a和各自的衬垫14a,14b上。
真空滚筒4按照惯例通过在以交叉线箭头示出的方向上旋转而工作,使得该真空滚筒首先大致在输入位置I处接收标签材料的带5,当该带接合切割装置8时,对带进行切割,以获得期望长度的标签2。
更具体来说,带5首先随着刀具盘体7前进,然后通过真空供应而固定至刀具盘体7的表面。当标签材料的带5到达输入位置I时,真空供应可方便地中断,在该输入位置处,带5的前缘可由真空滚筒4拾取。
当将标签材料大致转移至输入位置I处时,该标签材料受到由来自真空滚筒4和刀具盘体7的同时真空供应所产生的张力。随着转移进行,随着标签材料的由真空滚筒固定的部分增加,在刀具盘体7处供应的真空的影响降低。因此,带5开始接合切割装置8。
在切割位置处,切割的标签2仅由真空滚筒4承载。转移的完成可以被认为是在切割位置处即刻发生,因为标签质量相对于施加于其上的牵引力的存在是微不足道的。
随着将标签承载到真空滚筒4的侧面9上,标签经过上胶组16,该上胶组具体来说包括上胶滚筒17,从而将预定的胶水图案施加在标签2的将接触容器3的表面的侧面上。
通过上述真空滚筒4的结构,衬垫14a和14b以及真空滚筒的侧面9的至少一个部分9a中的通孔可单独地且可控制地与真空源流体连接。因此,每个标签2在整个操作过程中可精确地处理。
为了确保更好的执行,标签2在真空滚筒4的侧面9之上的精确定位可有利地通过保持由切割单元6接收的每个标签2而进行,并且前缘保持在衬垫14a处,并且后缘保持在相同对衬垫中的衬垫14b处。这可通过保持标签2的不同滚筒的精确定时并且通过控制整个操作中的真空的供应而实现。
具体来说,抽吸可通过三个不同保持区域中的每个单独地且可控制地施加至每个标签2,这三个保持区域分别由衬垫14a,14b和包括在其间的部分9a限定。
事实上,真空滚筒4位于非旋转的基座上,该基座作为固定分配器构件而安装。基座的孔或歧管12连接至一个或多个独立的真空源,例如使得不同的真空度可与不同的孔12相关联。当真空滚筒4围绕其轴线A”旋转时,内部通道11在与标签材料的带5/标签2的某些操作的执行对应的某些预定的角度位置处与某些孔和歧管12连通。在衬垫14a,14b以及每个包括在其间的部分9a处供应的真空度可相应地随着贴标签工序的操作而微调。
因此,可随时确保标签2与真空滚筒表面9之间的期望接触,例如以允许当标签至少被保持在衬垫14a,14b处时在标签的部分上适当地施加完整的胶水图案。优选地,在胶水施加的过程中,标签2也被保持在相关的部分9a处。
在胶水施加之后,贴标签操作于是通过将标签2从真空滚筒4转移至各自的物品3而完成,该物品由传送带50运送并由围绕各自的支撑板51的轴线A’旋转。
在所谓的正旋转布置中,传送带50和真空滚筒4在相反的方向上旋转,所以在标签转移时它们各自的外表面在大致相同的方向上移动。这是图1中示出的情况,其中真空滚筒4在顺时针方向上旋转,而传送带50在逆时针方向上旋转。
可替代地,在所谓的逆旋转布置中,传送带50和真空滚筒4在相同的方向上旋转,因此在标签转移时它们各自的外表面在相反的方向上移动。
然而,在这两种布置中,支撑板51和真空滚筒4应在相反的方向上旋转。
在输出位置O处,正在将标签2从真空滚筒4转移至物品3的动作将受到由真空滚筒4,传动带50和支撑板51的同时旋转的组合产生的速度影响。
具体来说,标签2应以与真空滚筒4的切向速度对应的标签加工速度V1到达输出位置O处。
在标签转移时,物品3(标签2待被转移在其上)的外表面以由以下各项的合成产生的速度移动:
-由其上放置有物品3的支撑板51围绕其自身的轴线A’的旋转得到的主切向速度V2;以及
-由相同支撑板51围绕传送带50的轴线A’的旋转得到的次切向速度V3。
可参考图4,其中交叉线箭头表示所涉及的部件的旋转方向,然而直箭头定性地表示上述切向速度V1,V2和V3。
有利地,为了将标签2从真空滚筒4转移到相关的物品3上:
-当所述衬垫14a接近到达输出位置O时,即,当标签2的前缘可有效地接合物品3的外表面时,减少保持标签2的前缘的衬垫14a处的真空的供应;以及
-优选地在减少衬垫14a处的真空的供应之后立即切断部分9a处的真空的供应。
另外,围绕真空滚筒4,传送带50和支撑板51的各自的轴线的旋转速度可有利地设置成使得,在输出位置O处,标签加工速度V1大于由主切向速度V2和次切向速度V3的组合产生的速度。
如果不是标签的后缘仍然被保持在衬垫14b处,在标签转移期间对部分9a处的真空的供应的抑制会导致缺乏正在转移的标签2与真空滚筒的表面之间的接触。
因此,如图5所示,标签2松散地缠绕在大致与支撑板51整体地旋转的物品3的外表面之上。
为了完成标签转移(见图6),当标签2的后缘到达输出位置O时,减少衬垫14b处的真空的供应。
具体来说,因为在标签转移时,标签2仅在其前缘和后缘处被紧紧夹住,即,因为在标签转移时只在衬垫14a,14b处供应真空而在部分91处没有供应真空,并且因为支撑板51以与贴标签台1的其他移动部件的速度相关的可控制的速度旋转,所以根据本发明的方法可以将标签2以精确地控制的宽松度施加在物品3上。
有利地,所述宽松度可以被调整并且配合物品3的预期的最终膨胀水平,特别是在物品3是挠性容器(例如瓶子)的情况下,其在填充时经历显著的与蠕变相关的膨胀。预期的最终膨胀水平可根据材料属性以及增压和储存情况来估计。
此外,本发明的方法允许将轻质标签材料以最小的胶水施加水平和良好的效果施加至轻质容器。
有利地本方法可应用于贴标签机中的传送带50和真空滚筒4的正旋转和负旋转布置两者。
具体来说,在负旋转布置中,因为次切向速度V3的相关分量相对于主切向速度V2应具有相反的方向,由它们的组合产生的速度应几乎不可避免地低于标签加工速度V1。换句话说,上述运动学关系应不要求保持对速度控制的特定地微调。
另一方面,在正旋转布置中,应需要更多全面的考虑,以确保标签加工速度V1大于由主切向速度V2和次切向速度V3的相关分量的组合产生的速度,因为这些速度将具有相同的方向。
Claims (5)
1.一种用于在贴标签机中将标签(2)施加至沿物品路径(P)行进的物品(3)的方法,其中,所述标签(2)在输入位置(I)处被接收在可移动的表面(9)上以保持在所述表面(9)上,同时所述标签被涂上胶水并通过所述表面(9)的运动而前进至输出位置(O),在所述输出位置处将所述标签(2)转移至所述物品(3);并且其中,所述物品(3)在沿所述路径(P)以行进速度(V3)行进的同时围绕旋转轴线(A’)以切向速度(V2)旋转;所述方法包括:
-为所述表面(9)的至少三个部分(14a,14b,9a)提供单独的且能控制的真空装置,以用于将所述标签(2)保持在所述表面(9)上;
-至少在所述标签(2)在所述输入位置(I)与所述输出位置(O)之间以标签加工速度(V1)前进的同时,通过所述真空装置的应用将所述标签(2)的前缘保持在所述三个部分中的第一部分(14a)处并将所述标签(2)的后缘保持在所述三个部分中的第二部分(14b)处;所述标签(2)的中段面向所述三个部分中的第三部分(9a);
-将所述标签(2)转移到所述物品(3)上;
其特征在于,
将所述标签(2)转移到所述物品(3)上的步骤包括:
-当所述第一部分(14a)到达所述输出位置(O)时,减少所述表面(9)的所述第一部分(14a)处的所述真空装置的应用;以及
-中断所述表面(9)的所述第三部分(9a)处的所述真空装置的应用;将所述标签(2)的所述后缘保持在所述表面(9)的所述第二部分(14b)处;
所述加工速度(V1)大于由所述切向速度(V2)和所述行进速度(V3)的组合产生的速度。
2.根据权利要求1所述的方法,其中,当标签材料的带(5)与布置在所述输入位置(I)上游的切割装置(8)接合时,从所述标签材料的带切断所述标签(2)。
3.根据权利要求1所述的方法,其中,所述物品(3)通过传送带(50)沿所述物品路径(P)运送,所述传送带围绕大致平行于所述物品(3)的所述旋转轴线(A’)的轴线(A)旋转;并且其中,所述表面(9)通过真空滚筒(4)承载,所述真空滚筒围绕大致平行于所述物品(3)的所述旋转轴线(A’)的轴线(A”)旋转,所述真空滚筒(4)的旋转方向与所述物品(3)的旋转方向相反。
4.根据权利要求3所述的方法,其中,所述传送带(50)的旋转方向与所述真空滚筒(4)的旋转方向相同。
5.根据权利要求3所述的方法,其中,所述传送带(50)的旋转方向与所述真空滚筒(4)的旋转方向相反。
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EP2109089A2 (de) * | 2008-04-12 | 2009-10-14 | Krones AG | Drehbares Etikett, Vorrichtung und Verfahren zum Anbringen des drehbaren Etiketts |
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Publication number | Publication date |
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EP2637939A1 (en) | 2013-09-18 |
WO2012062823A1 (en) | 2012-05-18 |
CN103298697A (zh) | 2013-09-11 |
US20140000803A1 (en) | 2014-01-02 |
EP2637939B1 (en) | 2014-09-24 |
IT1402675B1 (it) | 2013-09-13 |
US8999100B2 (en) | 2015-04-07 |
ITTO20100894A1 (it) | 2012-05-10 |
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