CN1040782C - 在织机的驱动夹持器中的改进的纬纱端捕纬／夹持系统 - Google Patents

在织机的驱动夹持器中的改进的纬纱端捕纬／夹持系统 Download PDF

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CN1040782C
CN1040782C CN95108692A CN95108692A CN1040782C CN 1040782 C CN1040782 C CN 1040782C CN 95108692 A CN95108692 A CN 95108692A CN 95108692 A CN95108692 A CN 95108692A CN 1040782 C CN1040782 C CN 1040782C
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flexure strip
weft
hook
weft yarn
grasping system
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CN1121122A (zh
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古里奥·宝托利
鲁西亚诺·克里安
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/12—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick
    • D03D47/20—Constructional features of the thread-engaging device on the inserters
    • D03D47/23—Thread grippers
    • D03D47/236—Drawing grippers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/39—Cord and rope holders
    • Y10T24/3916—One-piece
    • Y10T24/3918—Wedge slot

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  • Textile Engineering (AREA)
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  • Auxiliary Weaving Apparatuses, Weavers' Tools, And Shuttles (AREA)
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Abstract

在织机的纬纱驱动夹持器中的纬纱端捕纬/夹持系统，其类型是楔块被设计成在一钩内可作轴向移动，其中，至少有一个弹性片，其侧壁与钩的壁相配合，钩的壁与楔块的壁形成“V”形空腔，所述纬纱端被夹持在空腔内，本发明公开了不同的实施例。

Description

在织机的驱动夹持器中的改进的纬纱端捕纬／夹持系统
本发明涉及用于纬纱驱动夹持器的纬纱端捕纬/夹持的一新的系统，通过使用至少一个弹性片，其弹性片的一侧壁与形成“V”形空腔的钩的侧壁相配合，其中纬纱端被锁住夹持在空腔内，而使得一根或多根纬纱端同时能被更有效地夹持，在驱动期间，甚至在本织机的高速运转中不会有任何所说的纬纱端脱开这样的危险，而且当所说的纬纱驱动夹持器与正被生产的织物的边部脱离接合时该纬纱端能可靠地被松弛。
特别是本发明涉及对纬纱驱动夹持器的纬纱端捕纬/夹持元件的改进，该夹持器是由本申请人于1992年6月23日申请的意大利专利申请MI92A00153的主题。
在所说的专利申请中，纬纱驱动夹持器的捕纬/夹持元件基本上由一轴向可动的楔块构成，该楔块被弹性地压靠在于夹持器主体的一端设置的一钩内，在一侧该楔块与钩形成一窄的“V”形空腔用于锁住一夹持要被驱动的纬纱端进入空腔中，该楔块也由一弹性片被弹性地压靠在于所述钩的底面底部外表面设置的一底肩装置上，其中所说的弹性片在其尾端被固定到所述可动楔块或所述夹持体的底面上。
这样，纬纱端除了被锁住一夹持在所述“V”形空腔内以及另外由所述弹性片夹持之外，还不得不在与所述钩的底肩装置接合以及脱开时受到急转方面的变化，差不多以直角急转，从理论上看这对于防止滑出夹持顶部提供了极好的阻力。
实际上，现有技术中的这种解决方案存在着许多缺点，其主要缺点是在楔块用来使纬纱端脱开的整个动程期间所述弹性片总是压靠在钩的所述底肩装置上，当所述纬纱驱动夹持器与正在生产的织物的边部脱离接合时，在所述的弹性片与纬纱端之间存在着有危险的摩擦力，这会引起所述纬纱端从所述夹持器上发生不规则的脱开，以致使另外一定量的纬纱端从相应的喂纱纬管上退绕，结果引起纬纱的浪费。
而另一缺点是由于不能进行有选择的纬纱端捕纬，在多根纬纱端同时进入纬纱驱动夹持器的情况下所述解决方案不能进行可靠的夹持，此外，由于负荷加在被驱动的纬纱端上在夹持动程期间弹性片产生不可避免的振动，结果夹持效果产生变化，而不能确保纬纱端从顶部滑出，结果由于绕其顶部夹持点转动纬纱端则易于脱开。
本发明的目的是避免上述的缺点而提供一纬纱端捕纬/夹持系统用于楔块被设计成在钩内作轴向移动这种类型的纬纱驱动夹持器，这确保纬纱端在驱动期间不会不滑动，并且所述纬纱端不会由于滑动而损坏，此外当夹持器离开正被生产的织物的边部时不仅会使纬纱端容易且立即脱开，而且也可以可靠和有效地同时驱动多根纬纱端。
上述目的基本上这样来获得：通过至少一个弹性片，其一侧壁与楔块壁相配合，将纬纱端夹持在锁住夹持的上游，其中，纬纱端被锁住在窄“V”形空腔内，而该空腔是由轴向可移动的楔块的一壁与面对所述楔块壁的钩壁一起来限定的。
因此，事实上，纬纱端由弹性片的侧壁压靠在钩壁上这在纬纱端上产生附加的夹持，由于不会受纬纱驱动夹持的振动的影响，这使纬纱端从所述夹持器的顶部可靠地滑出，这是由于在所述夹持器的整个动程期间所述纬纱端绕锁住夹持的其上部点转动所致；另一方面楔块一旦轴向移动，显然纬纱端就完全自由地从纬纱驱动夹持器上脱开，而不会有损坏的危险。
总之，根据本发明在织机的纬纱驱动夹持器中的纬纱端捕纬/夹持系统，其中，一可轴向移动的楔块被弹性地压靠在一钩内，该钩设置在夹持器主体的一端，楔块的一壁与朝向所述楔块壁的所述钩的壁限定了一窄“V”形空腔以便使要被驱动的纬纱端锁住一夹持进入所述空腔内，其特征在于，至少一个弹性片沿所述“V”形空腔延伸直到所述“V”形的顶点或超过所述顶点，以便使所述楔块的一侧壁与所述钩的所述壁相配合。
然后，根据本发明的较好实施例，所述弹性片由所述轴向可移动的楔块支承，但很显然它也能由相同的夹持器主体支承。
另一方面，如果要驱动的纬纱端是硬型的，正如现有技术中所公知的那样，对其应用一附加的片夹持不会真正很有效，这是由于纬纱端的硬性不会防止纬纱端沿夹持区滑移直至滑出；在这种情况下，根据本发明的一不同的实施例，采用一短弹性片，不会延伸达到所述“V”—形空腔的顶点，而在到达所述顶点之前终止；要被驱动的所述硬性纬纱端在所述“V”—形空腔的所述顶点与所述短弹性片之间彼锁住；而靠在所述钩的壁上的所述短弹性片对正被松开的硬性纬纱端起到一尾部的阻碍作用，另外，所述的硬性纬纱端通过绕其顶部锁住夹持点转动能被松开。
最后，根椐本发明的另一实施例，所述弹性片则由一组相互叠置的弹性叠片构成，该叠片彼此有不同的长度并且朝所述“V”—形空腔的所述顶点增加长度。
由于最后的实施例使要被利用的每个单独的叠片产生夹持作用以夹持一特种纬纱，这对同时必须驱动多根纬纱端时特别有利；另一方面在要被驱动的一锁住/夹持的纬纱端之后的尾部一直存在至少一个叠层，通过靠在钩的所述活动壁上叠片形成一未被固定的(unsormountable)挡板，从而防止所述纬纱端绕其上锁住夹持点转动，所以这确保不会发生就是由于其转动而使纬纱端滑移这样的情况。
观在将参照附图对本发明作更好地说明，这些附图仅举例说明了较好实施例并不限制其目的，可以作技术上或结构上的修改，而不脱离本发明的范围。
所述的附图中：
图1示出采用根据本发明的，纬纱端捕纬/夹持系统的一纬纱驱动夹持器的钩端部的透视图；
图2示出沿图1的线AA剖开的剖面视图；
图3示出采用根据本发明的一实施例的纬纱端捕纬/夹持系统的一纬纱驱动夹持器的钩端部的透视图；
图4示出沿图3的线BB剖开的剖面图；
图5示出采用根据本发明的另一实施例的纬纱端捕纬/夹持系统的一纬纱驱动夹持器的钩端部的透视图
图6示出图5的纬纱驱动夹持器的钩端部的顶视图，其中，为清楚起见，未示出离开所述夹持器的纬纱端。
参见附图，(1)代表织机的纬纱驱动夹持器主体的前端，其终止于一钩(2)，钩(2)形成一空腔3，一轴向可移动的楔块(4)被弹性地压靠在其侧壁(3’)和(3”)上。在其一侧，所述的楔块(4)的朝向所述钩(2)的空腔(3)的所述侧壁(3’)的侧壁(4’)与所述侧壁(3’)形成一窄“V”—形空腔(5)，来自附图中未示出的喂纱纬管上的纬纱端(6)进入空腔(5)内并被锁住，沿箭头(7)的方向施加拉伸应力。此外所述纬纱端(6)通过一弹性片(8)也被弹性地压靠在钩(2)的所述侧壁(3)上，在其尾端(图中未示出)，弹性片(8)由所述楔块(4)支承并被固定到楔块的底壁上，弹性片(8)沿所述“V”形空腔延伸直到所述“V”形的顶点(5’)，而其侧壁(9)延伸以与所述侧壁(3’)相配合。
这样、当所述纬纱端(6)进入空腔(5)中时，其厚度弹性地抬起弹性片(8)，使其移开侧壁(3’)，纬纱端(6)继续进入空腔(5)，直到它被锁住；现在，由于锁住接合的作用并由于由弹性片(8)的侧壁所施加的压力作用结果使纬纱端(6)被锁在适当位置处，显然这使纬纱端具有很大的阻力以使纱线从顶部不沿箭头(7)的方向滑出。另一方面，一旦楔块(4)与弹性片(8)一起向后移动，则纬纱端(6)自动地完全脱开。
图3和4中所示的解决方案采用于硬性纬纱端的情况，相反，采用短的弹性片(8’)，其侧壁(9’)与所述侧壁(3’)相配合，但不贯穿直到顶点(5’)的空腔整个长度，而相反它只到与所述顶点(5’)离开一段距离的位置(10)。这样，弹性片(8’)没有夹持纬纱端(6)，而仅起一挡板或肩的作用以防止纬纱端(6)的端头(6’)绕其顶锁住夹持点(11)按箭头(12)(特别见图4)的方向转动，结果脱开。
最后，在必须同时驱动纬纱端(6)和(13)的情况下，采用图5和6所示的解决方案，应用一组三层相互叠置的弹性叠片(14)，(15)和(16)，它们彼此具有不同的长度，所述的长度朝所述顶点(5’)增加。这样，纬纱端(6)由最长的叠片(16)夹持，而纬纱端(13)由平均长度的叠片(15)和最短的叠片(14)夹持，与钩(2)的侧壁相互配合将防止所述纬纱端(6’)和(13’)由于转动而脱开。

Claims (7)

1、织机的纬纱驱动夹持器中的纬纱端捕纬/夹持系统，其中，一可轴向移动的楔块被弹性地压靠在一钩内，该钩设置在夹持器主体的一端上，楔块的一个壁与朝向所述楔块壁的所述钩的一壁一起限定了一窄“V”形空腔，以便锁住一夹持要被驱动的纬纱端进入所述空腔，其特征在于，至少有一个弹性片，其一侧壁与所述钩的所述壁相配合。
2、根据权利要求1的纬纱端捕纬/夹持系统，其特征在于，所述弹性片沿所述“V”—形空腔延伸直到所述“V”形的顶点。
3、根据权利要求1的纬纱端捕纬/夹持系统，其特征在于，所述弹性片沿所述“V”—形空腔延伸直到并超过所述“V”形的顶点。
4.根据权利要求1的纬纱端捕纬/夹持系统，其特征在于：所述弹性片沿所述“V”-形空腔延伸，在到达所述“V”-形空腔的顶点之前终止。
5、根据权利要求1的纬少端捕纬/夹持系统，其特征在于所述弹性片由所述轴向移动的楔块支承。
6、根据权利要求1的纬纱端捕纬/夹持系统，其特征在于，所述的弹性片由相同的夹持器主体支承。
7、根据权利要求1的纬纱端捕纬/夹持系统，其特征在于，所述弹性片由一堆相互叠置的弹性叠片构成，它们彼此具有不同长度，所述长度朝所述“V”—形空腔的所述顶点增加。
CN95108692A 1994-08-05 1995-08-03 在织机的驱动夹持器中的改进的纬纱端捕纬／夹持系统 Expired - Fee Related CN1040782C (zh)

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ES2155496T3 (es) 2001-05-16
ITMI941709A0 (it) 1994-08-05
US5558133A (en) 1996-09-24
CN1121122A (zh) 1996-04-24
DE69519262T2 (de) 2001-05-31
RU2119982C1 (ru) 1998-10-10
ITMI941709A1 (it) 1996-02-05
JPH0849133A (ja) 1996-02-20
DE69519262D1 (de) 2000-12-07
IT1274589B (it) 1997-07-18
EP0695820B1 (en) 2000-11-02
EP0695820A1 (en) 1996-02-07

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