CN1532328B - 旋转切割机及使用该旋转切割机的纤维制品制造方法 - Google Patents
旋转切割机及使用该旋转切割机的纤维制品制造方法 Download PDFInfo
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Abstract
本发明的旋转切割机及使用该旋转切割机的纤维制品制造方法是,从纤维制品的两面实施半切,在纤维制品两面上形成立起的纤维绒毛。在把第一辊(20)的接触周面(24a、24a)压接到第二辊(30)的外周面(32a)上的状态下,第一切割刀(42)的刀刃(42a)与第二承受部(52)的承受面(52a)间隔分开并对置,第二切割刀(53)的刀刃(53a)与第一承爱部(43)的承受面(43a)也间隔分开并对置。当工件WA由第一棱(41)与第二棱(51)夹持时,由切割刀(42、53)分别切断设置于基片(Wa)表里两面上的纤维束层(Wb、Wb)。这种纤维束层Wb在切断部中绒毛立起,能发挥集尘效果。
Description
技术领域
本发明涉及旋转切割机以及使用该旋转切割机的纤维制品制造方法,该旋转切割机对夹持于二辊间的纤维制品等工件从工件表面切割到工件厚度中途。
背景技术
在对无纺布或多个无纺布层叠层或无纺布及纤维束层形成的层积体等构成的纤维制品按规定式样进行切割的切割工艺中,使用有二辊的旋转切割机。
图9是表示现有技术中这种旋转切割机1的斜视图。
该旋转切割机1中模辊2和托辊3被设置成其轴中心相互平行的方式。前述模辊2具有转动轴4和距前述转动轴4的轴中心按规定半径形成的外周面5;在该外周面5上沿半径方向突出设置着多个切割刀6。在该模辊2的轴向两侧端形成有比前述外周面半径稍大的接触周面7、7,切割刀6的刀刃稍比接触周面7、7稍向半径方向突出。另一方面,托辊3具有转动轴8和距转动轴8轴中心按规定半径形成的外周面9。
前述模辊2的接触周面7、7接触托辊3的外周面9,就能维持模辊2轴中心与托辊3轴中心间的一定间隔,并且,通过把接触周面7、7按规定力加压到前述外周面上,就能使模辊2上设置的切割刀6与托辊3的外周面9按规定的压力挤压接触。
前述模辊2和托辊3相互同步沿箭头方向转动驱动,一旦把工件W输送到模辊2和托辊3间,在模辊2的切割刀6刀刃和托辊3的外周面9间夹入前述工件W,用切割刀6局部切断工件W。
例如,前述工件W具有由无纺布等形成的基片Wa和前述基片Wa两表面上重叠的纤维束层Wb。纤维束层Wb是在工件W输送方向(MD)中不中断地连续着的连续纤维束,这种纤维束层Wb和基片Wa沿输送方向(MD)每隔一定间隔有结合线Wc结合。一旦把这种工件W供应给前述模辊2和托辊3间,前述结合线Wc和结合线Wc的中间部分由前述切割刀6和外周面9夹持,把前述基片Wa和纤维束层Wb一起切断,形成切割线Wd。
经过前述切断工艺后的工件W在前述基片Wa两表面中的纤维束层Wb以前述结合线Wc为固定端,使在切割线Wd处切断的部分分离成自由端。该工件W可以是作为擦地用等清洁用物品使用的物件,也希望纤维束层Wb能具有刷子类功能的集尘效果。
不过,图9所示的旋转切割机1,由于切割刀6的刀刃沿半径方向比接触周面7、7突出并用强制压力给切割刀6和托辊3的外周面9加压,且基片Wa和纤维束层Wb一起被挤压着切割,所以,切割刀6和外周面9的大加压力使切割刀6的刀刃容易发热。因此,如果前述纤维束层Wb由热可塑性树脂纤维形成的话,在前述切割线Wd部分构成纤维束层Wb的个个纤维相互热融,或者,构成前述纤维束层Wb的个个纤维和基片Wa一起容易热融。
结果经过前述切断工艺后的工件W,构成前述纤维束层Wb的个个纤维难以分散,例如,在作为擦地用等清洁用物品使用的情况下,纤维束层Wb不呈现最适刷子状,不能发挥所希望的集尘效果。
因此,为了防止在切割线Wd的部分构成纤维束层Wb的个个纤维热融着,不把基片Wa和纤维束层Wb一起强制加压进行切断,而是采用把工件W从其一方表面切割到工件W厚度中途的所谓半切的手法,使切割力只对纤维束层Wb本身起作用,不会产生或能减少个个纤维的热融着现象。
下面的专利文献1公开了进行前述半切的手法。该专利文献1中记载的手法如图9所示,旋转切割机中切割刀6的刀刃比接触周面7、7更靠近轴中心侧,使刀刃和外周面9不接触地保持间隔,当把工件插入模辊2和托辊3间时,由切割刀6从工件W的表面切入到工件W的厚度中途。
专利文献1
日本专利文献特开平10-76494号公报。
但是,使用前述专利文献1记载的半切手法对图9所示的工件W进行切断时,也许能切断基片Wa一方表面设置的纤维束层Wb,但不能一起切断分别设置于基片Wa两侧表面上的纤维束层Wb。另外,在使用与如图9所示工件W不同工件的情况下,也不能分别从其两表面切割到工件厚度中途从两面进行半切处理。
另外,也考虑了在二个辊上分别设置切割刀且在二辊的切割刀和切割刀处夹入工件的结构。但即使在刀刃薄的切割刀任一处夹持工件,都难以用刀刃从两侧的工件两表面进行切入。
发明内容
本发明是为解决上述现有技术中存在的问题而提出的,其目的在于提供能从工件两表面同时切割到工件厚度中途的旋转切割机,以及使用这种旋转切割机制造纤维制品的制造方法。
本发明的旋转切割机,具有绕第一轴中心转动的第一辊和绕着平行于前述第一轴中心的第二轴中心转动的第二辊;其特征在于:在前述第一辊的外周面上设置第一切割刀和第一承受部,在前述第二辊的外周面上设置第二切割刀和第二承受部;旋转切割机还设置有同步机构和间隔设置机构;同步机构以使前述第一切割刀与前述第二承受部对置且使前述第一承受部与前述第二切割刀对置的方式,使前述第一辊和前述第二辊相互同步转动;间隔设定机构用于在前述第一切割刀与前述第二承受部间以及前述第一承受部与前述第二切割刀间形成间隔。
本发明的旋转切割机中,使第一辊和第二辊同步转动,从而能使第一切割刀与第二承受部时常按一定间隔对置,且使第一承受部与第二切割刀时常按一定间隔对置。当把工件供应到该第一辊与第二辊间时,能由前述第一切割刀从工件的一个表面切割到工件厚度的中途,并且同时从工件另一表面切割到工件厚度中途。
另外,本发明的旋转切割机还包括设置有从前述第一辊外周面沿半径方向突出的第一棱,在该第一棱处设置前述一切割刀和前述第一承受部;设置有从前述第二辊外周面沿半径方向突出的第二棱,在该第二棱处设置前述第二切割刀和前述第二承受部。
如上所述,在第一辊与第二辊双方形成相互对置的棱,在各棱上设置切割刀与承受部,从而经过两辊间的工件的一个表面的切割部位和另一表面的切割部位能相互接近配置,即,形成在工件一表面和另一表面中相时置的位置处被切割的制品。
在前述这种棱上形成有切割刀和承受部的情况下,前述第一承受部和第二承受部的宽度尺寸被形成的比前述第一切割刀和前述第二切割刀的刀刃宽度尺寸大。
因承受部的宽度比切割刀刀刃的宽度更大,承受部具有作为支点的功能,切割刀与承受部夹持着工件时,由切割刀容易地切入到工件厚度的中途。
另外,本发明中作为前述间隔设定机构,分别在前述第一辊上设置比其外周面半径更大的第一接触周面,以及在前述第二辊上设置比其外周面半径更大的第二接触周面,并通过前述第一接触面与前述第二接触面接触,设定第一轴中心与第二轴中心间的间隔。
通过使第一接触面与前述第二接触面接触,就能设定第一轴中心与第二轴中心间的间隔。
另外,本发明的纤维制品的制造方法特征在于,把外周面上设置有第一切割刀和第一承受部的第一辊以及外周面上设置有第二切割刀和第二承受部的第二辊,以两辊轴中心保持规定间隔的方式平行配置;以第一切割刀与第二承受部对置且第一承受部与第二切割刀对置状使两辊同步转动;
把纤维制品供应给第一辊的外周面与第二辊的外周面之间,由前述第一切割刀与第二承受部夹持前述纤维制品,从该纤维制品的一个表面切割到纤维制品厚度中途的同时,由第一承受部与第二切割刀夹持前述纤维制品,从该纤维制品的另一表面切割到纤维制品的厚度中途。
在前述方法中,例如,前述纤维制品是在基片的两表面层积纤维束层且使前述基片与前述纤维束层部分结合的制品,由第一切割刀切割位于一个表面上的前述纤维束层,由第二切割刀切割位于另一表面上的纤维束层。
此外,前述纤维制品例如是被切断的纤维束层发挥集尘效果的清洁用物品。
附图说明
图1是表示本发明实施方式的旋转切割机斜视图;
图2是以垂直于轴中心的剖面表示图1所示旋转切割机的切割刀与承受部对置状态的放大剖面图;
图3是一个切割刀与承受部的放朋面图;
图4是表示以切割刀与承受部切断工件的工艺的放大剖面图;
图5是成切断部的工件的侧视图;
图6是切断处理后工件的斜视图;
图7是切断处理后工件的另一实施例斜视图;
图8是切断处理后工件的剖面图;
图9是表示使用现有技术中旋转切割机进行纤维制品切切断的工艺的斜视图。
具体实施方式
图1和图2是表示本发明实施方式的旋转切割机斜视图;图2是表示在二辊上设置的切割刀与承受部对置状态中垂直于轴中心的剖面放大剖面图;图3是一方切割刀与承受部的放大剖面图;图4是表示纤维制品工件具有切断功能的放大剖面图;图5是被切断工件的剖面图。
图1所示的旋转切割机10具有第一辊20和第一辊30。两辊20、30均由模具钢等钢材制成。
第一辊20具有转动轴21和固定在转动轴21上的主体辊22。转动轴21的中心是第一轴中心O1。主体辊22的外周面22a是相对第一轴中心O1半径一致的圆筒面。前述主体辊22的外周面22a上设置有多个第一棱41。个个第一棱41从外周面22a沿半径方向突出着在轴向伸展,且邻近第一棱41都相互平行。
在第一辊20上一体形成有夹持着第一棱41且在轴向两则的侧环24、24,这些侧环24、24外周面成为第一接触周面24a、24a。第一接触周面24a、24a的半径比前述外周面22a的半径大。
第二辊30具有转动轴31,其中心为第二轴中心O2。第二辊30具有主体辊32,其外周面32a是距第二轴中心O2具有相同半径的圆筒面。第二辊30的外周面32a的半径与第一辊20的外周面22a的半径相同。在前述外周面32a上设置有沿半径方向突出着的多个第二棱51。每个第二棱51在轴向伸展,任何相邻的第二棱51都是相互平行的。
第二辊30上一体形成有夹持着第二棱51且在轴向两侧的侧环34、34,其表面成为第二接触周面34a、34a。第二接触周面34a、34a距第二轴中心O2的半径比前述外周面32a的半径大,这些第二接触周面34a、34a的半径与第一辊20的第一接触周面24a、24a的半径相同。
在第一辊20和第二辊30上施加使第一轴中心O1和第二轴中心O2接近的加压力,对第一接触周面24a、24a和第二接触周面34a、34a加压,从而就能使第一轴中心O1和第二轴中心O2相互平行且保持一定间隔。这样,由前述第一辊20的第一接触周面24a、24a和第二辊30的第二接触周面34a、34a构成间隔设定机构。
在第一辊20的转动轴21上固定着同步齿轮26,在第二辊30的转动轴31上设置有同步齿轮36。同步齿轮26和同步齿轮36具有相同节距的圆环,相互齿合。同步齿轮36由二个平齿轮36a、36b组合而成,一个平齿轮36a固定在转动轴31上,弹簧向另一个平齿轮36b施加周向弹力。由弹簧而朝向周向相互反向的两平齿轮36a、36b与前述同步齿轮26齿合,从而消除同步齿轮26和同步齿轮36间的齿隙。
另外,在第一辊20的转动轴21和前述同步齿轮26间设置有相位调节器27。该相位调节器27能调节固定于主体辊22上的转动轴21与同步齿轮26的转动方向相位,并在调节后锁定转动轴21和同步齿轮26。在前述同步齿轮26与同步齿轮36齿合状态下,通过调节同步齿轮26与主体辊22的相位,就能在第一辊20和第二辊30转动时在包含第一轴中心O1和第二轴中心O2的面内时常能使第一棱41和第二棱51对置。
为此,设置在第一辊20上的第一棱41的周向节距与设置于第二辊30上的第二棱51的周向节距是相同的,第一棱41的轴向长度与第二棱51的轴向长度也是相同的。
如图2所示,分别在多个第一棱41上设置沿转动方向位于前方的第一切割刀42和沿转动方向位于后方的第一承受部43。第一切割刀42具有沿着第一辊20轴向伸展的刀刃42a。并在第一承受部43的头部设设置有沿第一辊20的轴向伸展的承受面43a。承受面43a是平面或以轴中心O1为中心的圆筒面。另外,在第一切割刀42和第一承受部43间设置沿轴向伸展的第一槽44。
第二棱51的剖面形状与第一棱41的剖面形状点对称(旋转对称),第二棱51在沿转动方向的前部形成有第二承受部52,并沿转动方向后方设置有第二切割刀53。在第二承受部52的头部形成有沿轴向伸展为平面或圆筒面的承受面52a,在第二切割刀53的头部形成有沿轴向伸展的刀刃53a。另外,在第二承受部52和第二切割刀53间形成有沿轴向伸展的第二槽54。
在第一辊20上,第一切割刀42的刀刃42a和第一承受部43的承受面43a位置比第一接触周面24a更靠近轴中心O1侧。同样,第二承受部52的承受面52a和第二切割刀53的刀刃53a位置比第二接触周面34a更靠近轴中心O2侧。
前述刀刃42a以及从承受面43a的外周面22a在半径方向突出尺寸H1与前述刀刃53a以及从承受面52a的外周面32a突出的尺寸H2相同。第一切割刀42的刀刃42a与第二承受部52的承受面52a的间隔δ,以及第一承受部43的承受面43a与第二切割刀53的刀刃53a的间隔δ都是0.01~0.03mm。
如图2所示,当第一辊20与第二辊30同步转动时,第一棱41与第二棱51有对置瞬间,这时第一切割刀42的刀刃42a的宽度大小的中心(沿轴向延伸的中心线)与第二承受部52的承受面52a的宽度大小的中心(沿轴向的中心线)位于同一直线V1上,同样,第一承受部43的承受面43a中心与第二切割刀53的刀刃53a中心位于同一直线V2上。直线V1与V2相互平行,其间隔Δ为1~2mm。
第一切割刀42与第二切割刀53的剖面形状相同,并且,从刀刃42a、53a朝向裙部的宽度大小是逐渐变大,具有刀刃角度θ1。该刀刃角度θ1为20~70度大小。另外,第一切割刀42的刀刃42a和第二切割刀53的刀刃53a的宽度大小T1为0.01~0.06mm。第一承受部43的承受面43a与第二承受部52的承受面52a的宽度大小T2比前述刀刃宽度大小T1大,T2为0.08~1.0mm。
图4是表示使用前述旋转切割机10切断工件WA的方法的剖面图,图5是切断处理后工件WA的剖面图,图6是切断处理后工件WA的斜视图。
工件WA是纤维制品,在基片Wa的二表面上重叠着纤维束层Wb、Wb。在用该旋转切割机10进行切断工艺前的工艺中,使基片Wa与纤维束层Wb、Wb在工件WA输送方向(MD)中每隔一定间隔并在与MD方向垂直的方向(CD)中沿直线由结合线Wc相互结合。
前述基片Wa是含有热可塑纤维的无纺布,例如是用纺粘法、熔喷法、射流喷网法等形成的无纺布。前述纤维束层Wb是纤维束,特别是对任何纤维未施加结合处理的纤维束。例如纤维束层Wb是从TOW开纤而成的,能使用沿MD方向连续伸展的纤维束。构成纤维束层Wb的个个纤维具有壳部为聚酯等低熔点树脂且芯部由PET或PP等形成的芯壳型剖面。
因基片Wa和纤维束层Wb均含有热可塑性纤维,前述结合线Wc可以通过把构成基片Wa的纤维与构成纤维束层Wb的纤维热融而形成。
前述工件WA送入第一辊20和第二辊30间,当第一辊20和第二辊30同步转动时,工件WA在结合线Wc与结合线Wc的中间位置由第一棱41和第二棱51夹持。
如图4所示,工件WA在第二承受部52的承受面52a处由图示下方面支撑,并从上侧由第一切割刀42加压。前述承受面52a的宽度T2大,因工件WA该承受面52a支持下从另一面由刀刃42a挤压,所以,在工件WA上实施从上侧面切入到工件WA厚度中途的所谓的半切处理。从而对图示基片Wa上侧面重叠的纤维束wb进行切割,形成切断部We。
另外,在形成前述切断部We后,工件WA侧的面在第一承受部43的承受面43a支撑下,朝向下侧的面由第二切割刀53的刀刃53a切入。从而在基片Wa下侧重叠的纤维束层Wb上形成切断部Wf。
结果如如图6所示,不会使基片Wa切断,在基片Wa两表面重叠的纤维束层Wb、Wb上分别在位于结合线Wc和结合线Wc的中间位置形成切断部We、Wf。与现有技术不同,不会把基片Wa和纤维束层Wb一起切断,因是半切处理,纤维束层Wb的个个纤维在切断部We、Wf中难以热融。因此,如图8所示,在基片Wa的两表面上,纤维束层Wb、Wb以结合线Wc为固定端,以切断部We、Wf为自由端,在这些自由端中的个个纤维容易分散,纤维束层Wb、Wb能发挥刷子式的集尘效果。
把这种纤维制品用作擦地等清洁用物品,其两面能发挥高效的集尘效果。
另外在基片Wa上侧表面的纤维束层Wb上形成的切断部We和下侧表面的纤维束层Wb上形成的切断部Wf因非常接近,切断部We和切断部Wf看起来基本在表里相同的位置。因此,纤维制品的二表面能呈现出分别形成相同形状刷子部式的外观。
另外,在图1所示实施方式中,虽然第一辊20上形成的第一棱41与第二辊30上形成的第二棱51都是轴向直线连续伸展的,但第一棱41与第二棱51至少一方也可以在轴向间断形成。
在这种情况下,纤维制品工件WB如图7所示,一面内的纤维束层Wb在结合线Wc和结合线Wc的中间的切断部We是间隔形成的,在另一表面内的切断部Wf是间隔形成的。
另外,工件WA、WB也可以是具有替换纤维束层Wb、Wb的无纺布层等的,对这种无纺布进行切断。
发明效果
在上述本发明中,对工件来说,能同时进行从两表面到工件厚度中途的切割,例如适用于用纤维束层形成刷子部的纤维制品的制造。另外,因在切断部的纤维间不会热融着,能获得具有挥绒毛立起状集尘效果的纤维制品。
Claims (5)
1.一种旋转切割机,具有绕第一轴中心转动的第一辊和绕着平行于前述第一轴中心的第二轴中心转动的第二辊;其特征在于:
在前述第一辊的外周面上设置第一切割刀和第一承受部,在前述第二辊的外周面上设置第二切割刀和第二承受部;
还设置有同步机构和间隔设置机构;前述同步机构以使前述第一切割刀与前述第二承受部对置且使前述第一承受部与前述第二切割刀对置的方式,使前述第一辊和前述第二辊相互同步转动;前述间隔设定机构用于使前述第一切割刀与前述第二承受部间以及前述第一承受部与前述第二切割刀间形成间隔,
设置从前述第一辊的外周面向半径方向突出的第一棱,在该第一棱的前端部形成前述第一切割刀和前述第一承受部,设置从前述第二辊的外周面向半径方向突出的第二棱,在该第二棱的前端部设置前述第二切割刀和前述第二承受部,
前述第一切割刀和前述第一承受部以从前述第一辊的外周面向半径方向的突出高度大致相同的方式设置,前述第二切割刀和前述第二承受部以从前述第二辊的外周面向半径方向的突出高度大致相同的方式设置。
2.根据权利要求1记载的旋转切割机,其特征在于:前述第一承受部和第二承受部的宽度尺寸比前述第一切割刀和前述第二切割刀的刀刃宽度尺寸大。
3.根据权利要求1或2记载的旋转切割机,其特征在于:作为前述间隔设定机构,分别在前述第一辊上设置比其外周面半径更大的第一接触周面、在前述第二辊上设置比其外周面半径更大的第二接触周面;通过前述第一接触面与前述第二接触面接触,设定第一轴中心与第二轴中心间的间隔。
4.一种纤维制品制造方法,其特征在于,把外周面上设置有第一切割刀和第一承受部的第一辊以及外周面上设置有第二切割刀和第二承受部的第二辊,以两辊轴中心保持规定间隔的方式平行配置;以第一切割刀与第二承受部对置且第一承受部与第二切割刀对置状使两辊同步转动;
把纤维制品供应给第一辊的外周面与第二辊的外周面之间,由前述第一切割刀与第二承受部夹持前述纤维制品,从该纤维制品的一个表面切割到纤维制品厚度中途的同时,由第一承受部与第二切割刀夹持前述纤维制品,从该纤维制品的另一表面切割到纤维制品的厚度中途,其中,
前述纤维制品是在基片的两表面层积纤维束层且使前述基片与前述纤维束层部分结合的制品,由第一切割刀切割位于一个表面上的前述纤维束层,由第二切割刀切割位于另一表面上的纤维束层。
5.根据权利要求4记载的纤维制品制造方法,其特征在于,前述纤维制品是纤维束层被切断后发挥集尘效果的清洁用物品。
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IT201700050040A1 (it) * | 2017-05-09 | 2018-11-09 | Rca Bignami Srl | Gruppo di taglio a rulli, particolarmente per materiali in nastro. |
JPWO2019151247A1 (ja) * | 2018-01-30 | 2021-03-04 | 山田 菊夫 | 起毛シートの製造方法及び清掃シート |
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- 2004-01-21 US US10/762,881 patent/US7127975B2/en not_active Expired - Lifetime
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Also Published As
Publication number | Publication date |
---|---|
US20040149095A1 (en) | 2004-08-05 |
KR20040068867A (ko) | 2004-08-02 |
KR101055344B1 (ko) | 2011-08-09 |
JP4338982B2 (ja) | 2009-10-07 |
JP2004223692A (ja) | 2004-08-12 |
US7243585B2 (en) | 2007-07-17 |
US20060272462A1 (en) | 2006-12-07 |
CA2455195A1 (en) | 2004-07-27 |
TWI230116B (en) | 2005-04-01 |
TW200427557A (en) | 2004-12-16 |
CN1532328A (zh) | 2004-09-29 |
CA2719491C (en) | 2012-07-24 |
CA2455195C (en) | 2012-02-28 |
US7127975B2 (en) | 2006-10-31 |
CA2719491A1 (en) | 2004-07-27 |
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