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CN1181962C - 用于运输皮带和传动皮带的挤压型材 - Google Patents

用于运输皮带和传动皮带的挤压型材 Download PDF

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CN1181962C
CN1181962C CNB991159756A CN99115975A CN1181962C CN 1181962 C CN1181962 C CN 1181962C CN B991159756 A CNB991159756 A CN B991159756A CN 99115975 A CN99115975 A CN 99115975A CN 1181962 C CN1181962 C CN 1181962C
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extrudate
plastics
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CN1262991A (zh
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B·贝汉
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K. Berhan Technology New Development GmbH
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    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B5/00—Making ropes or cables from special materials or of particular form
    • D07B5/06—Making ropes or cables from special materials or of particular form from natural or artificial staple fibres
    • D07B5/08—Making ropes or cables from special materials or of particular form from natural or artificial staple fibres agglutinated by adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/709—Articles shaped in a closed loop, e.g. conveyor belts
    • B29L2031/7092—Conveyor belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/709—Articles shaped in a closed loop, e.g. conveyor belts
    • B29L2031/7094—Driving belts
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/22—Flat or flat-sided ropes; Sets of ropes consisting of a series of parallel ropes
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2501/00—Application field
    • D07B2501/20—Application field related to ropes or cables
    • D07B2501/2076—Power transmissions
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2904—Staple length fiber
    • Y10T428/2907—Staple length fiber with coating or impregnation
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2918—Rod, strand, filament or fiber including free carbon or carbide or therewith [not as steel]
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2933—Coated or with bond, impregnation or core
    • Y10T428/2971—Impregnation

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Belt Conveyors (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Reinforced Plastic Materials (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

描述了一种用于运输皮带和传动皮带的热塑性塑料挤压型材。该挤压型材是这样增强的，即将约0.5至40重量百分比份额的玻纤、芳族聚酰胺纤维或碳纤维混合于塑料，可将带或者不带塑料外包物的挤压型材焊接成无端头皮带。

Description

用于运输皮带和传动皮带的挤压型材
                           技术领域
本发明涉及一种用于运输皮带和传动皮带的热塑性塑料的挤压型材以及一种用于制造这种挤压型材的方法。
                           背景技术
在传动和运输技术领域大量地应用了热塑性塑料，尤其是基于聚氨酯和聚酯的挤压皮带。为了制造，将成型材料挤压成散装商品，在大多数使用场合，以相应的长度将其焊接成无端头皮带。根据使用目的，可将皮带制作成圆形皮带、三角皮带、扁平皮带或带有特定成型截面的皮带。
为了提高这种皮带的抗拉强度和抗断强度，已公知：应用复合挤压工艺在热塑性塑料挤压型材中埋入作为抗拉载体的型芯。该抗拉载体型芯是一种诸如芳族聚酰胺纤维、玻璃纤维、碳纤维等增强纤维绳索，或是一种尼龙或绞线绳索。
这种已知强抗拉皮带在挤压型材焊接成无端头皮带时出现的问题是，该抗拉载体型芯妨碍了塑料的热塑性焊接。因此，通常由于在焊接前在共同对应的被焊接挤压型材端去除抗拉载体型芯，这样就致使在焊接处仅仅将热塑性塑料对接和焊接。该抗拉载体型芯的去除是一个费时间的工作步骤。而且尤其是由于在焊接位置去除了抗拉载体型芯就会在皮带上出现缺乏增强的具有较低抗断和伸缩强度的薄弱环节。因此，公知的皮带容易在焊缝处撕开。
                           发明内容
本发明的任务是提供一种用于具有高抗拉和抗断强度的运输和传动皮带的挤压型材，这种挤压型材焊接成无端头皮带不会有薄弱环节。
按照本发明，该任务是通过这样一种挤压型材完成的，即一种用于运输皮带或传动皮带的用纤维增强的热塑性塑料挤压型材，其特征是，将0.5至40重量百分比份额的增强纤维混合于挤压型材的塑料。
本发明还涉及制造该挤压型材的方法，是通过在挤压型材挤出时，将约0.5至40重量百分比份额的增强纤维混合于塑料中。
                           具体实施方式
按照本发明，由热塑性塑料挤压成用于输送和传动皮带的型材。尤其是使用基于聚氨酯和聚酯的热塑性弹性体。该挤压是使用一种已知的挤压设备，例如螺旋挤压机进行的。
将从0.5至40重量百分比的增强纤维混入热塑性塑料。已证明玻纤尤其可作为一种增强纤维。同样，也能使用其他的增强纤维，例如芳族聚酰胺纤维(Kevlar)或碳纤维。
根据热塑性塑料和增强纤维的特性，当纤维份额为塑料的5至30、尤其是8至20重量百分比时产生特别好的品质。
在这里百分比数据总是基于塑料和增强纤维的总量。
增强纤维以尽可能均质分散的方式混合在塑料中。当增强纤维作为短纤维混合于塑料时，这样一种均质方式将增强纤维混合于塑料是特别有益的。尤其是所述的短纤维可先与粉末状或成粒状的塑料物质均质地混合，再供给挤压设备。
可将本发明的挤压型材直接用作输送皮带或传动皮带，并且焊接成无端头皮带。在这里该挤压型材形成皮带的整个型材横截面。该整个的型材横截面通过增强纤维增强。
也可将本发明挤压型材用作具有抗拉增强型芯。在这种情况下，用不含增强纤维的热塑性塑料将这种通过增强纤维增强的挤压型材包上。为此，把本发明的挤压型材输入另一个挤压设备，并且在复合挤压工序中用热塑性塑料包上。如果挤压型材和包覆体使用同样的热塑性塑料，那么抗拉载体型芯的挤压型材和包覆体之间的结合就会特别好。
可依据使用目的自由选择挤压型材的截面形状。他们可以制成圆形、三角形、扁平形和各种其他形状。如果使用本发明挤压型材为抗拉载体型芯，那么也可在使用中把包覆体的形状选择成相应的形状。
增强纤维的百分比份额至少部分地取决于，纤维增强挤压型材是否形成整个皮带的型材截面或者是否用作外包塑料的抗拉载体型芯。
尤其是玻璃纤维作为混合的增强纤维会对挤压嘴造成严重的磨损。用于复杂皮带型材的挤压嘴是相当昂贵的。因此，只要用玻纤增强整个型材截面，那么就要尝试，为了减小昂贵挤压嘴的磨损而尽可能地减少增强纤维的份额；但是为了实现理想地改善抗拉和抗断强度，还必须具有足够的增强纤维份额。在这种使用场合，优选将增强纤维份额选择在约0.5至15的重量百分比范围，其中一般来说，在约5至15的重量百分比范围就能显著改善抗拉和抗断强度，而此时挤压嘴的磨损还不太大。相反，如果将纤维增强的挤压型材用作抗拉载体型芯，把它用塑料包上，那么，对于抗拉载体型芯可采用简单截面型材，例如圆型截面型材。皮带的复杂型材形状通过塑料外包物实现。因为可低成本的制造带有简单截面，如圆形截面的挤压嘴，在这种情况下由增强玻璃纤维造成的较强的磨损是可以容忍的。这里可以加入的较高的增强纤维份额是在约5至20重量百分比范围，优选在约10至15重量百分比范围。
可以在没有预处理或后处理情况下热塑性地焊接本发明的挤压型材。对此可使用本身公知的焊接方法，如对称焊接，无接触焊接，摩擦焊接，红外焊接，超声焊接和热气焊接。
该挤压型材在焊缝处具有如同其他没有焊接的区域一样高的抗拉和抗断强度。如果按本发明挤压型材形成整个皮带挤压截面，那么都能产生不受增强纤维影响的可焊接性。如果通过外包本发明挤压型材而生产的皮带，那么可在其整个成型截面上焊接该皮带，而无需特殊加工由挤压型材形成的抗拉载体型芯。用同样的方法在挤压型材和外包物的截面上进行焊接并且这种焊接是同质的。
对本发明挤压型材的拉伸试验表明在焊缝区域连接是毋庸置疑的，例如对带有焊缝的挤压型材进行下述拉伸试验：
1、本发明的含有10％份额玻璃纤的直径为3mm的聚氨酯圆形型材在负载为250N并拉伸65％时才断裂。
2、通过复合挤压工序附加用聚氨酯(PU 80A)将该挤压型材外包成直径为9mm的圆形皮带。该皮带直至500N负载、拉伸400％仍能承受而没有出现皮带断裂。直到拉伸700％皮带才断裂。但是在焊缝区域既没有发生本发明挤压型材的抗拉载体型芯断裂，也没有发生外包物的断裂。

Claims (15)

1、用于运输皮带或传动皮带的用纤维增强的热塑性塑料挤压型材，其中所述热塑性塑料是基于聚氨酯或聚酯的弹性体，其特征是，将0.5至40重量百分比份额的增强纤维混合于挤压型材的塑料。
2、按照权利要求1所述的挤压型材，其特征是，混合于塑料中的增强纤维的份额为5至30重量百分比。
3、按照权利要求1所述的挤压型材，其特征是，混合于塑料中的增强纤维的份额为8至20重量百分比。
4、按照权利要求1至3之一所述的挤压型材，其特征是，该增强纤维是玻璃纤维。
5、按照权利要求1至3之一所述的挤压型材，其特征是，该增强纤维是芳族聚酰胺纤维或者碳纤维。
6、按照权利要求1至3之一所述的挤压型材，其特征是，该增强纤维是短纤维。
7、按照权利要求1至3之一所述的挤压型材，其特征是，该挤压型材形成皮带的整个型材截面。
8、按照权利要求1至3之一所述的挤压型材，其特征是，用热塑性塑料外包上挤压型材。
9、按照权利要求8所述的挤压型材，其特征是挤压型材的塑料和包覆物的塑料是同样的。
10、用于制造按照权利要求1至9之一所述的作为运输皮带或传动皮带的热塑性塑料挤压型材的方法，其中所述热塑性塑料是基于聚氨酯或聚酯的弹性体，其特征是，在挤压型材挤压时，将0.5至40重量百分比份额的增强纤维混合于塑料。
11、按照权利要求10所述的方法，其特征是，混合于塑料中的增强纤维的份额为5至30重量百分比。
12、按照权利要求10所述的方法，其特征是，混合于塑料中的增强纤维的份额为8至20重量百分比。
13、按照权利要求10所述的方法，其特征是，把增强纤维作为短纤维混合于塑料。
14、按照权利要求13所述的方法，其特征在于，将短纤维和粉末状或者成粒状的塑料均质混合，然后供给挤压。
15、按照权利要求10至14之一所述的方法，其特征是，在复合挤压工序中用热塑性塑料外包该挤压型材。
CNB991159756A 1998-12-02 1999-12-02 用于运输皮带和传动皮带的挤压型材 Expired - Fee Related CN1181962C (zh)

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ITUD20050008A1 (it) * 2005-01-31 2006-08-01 Elatech Srl Procedimento per produrre un elemento di trasmissione, ed elemento cosi' prodotto
US7971856B2 (en) * 2006-11-29 2011-07-05 J.R. Clancy, Inc. Drive rope and drive pulley
US9027623B2 (en) 2009-09-22 2015-05-12 Flexible Steel Lacing Company Welding apparatus for conveyor belts and method
DE102012024120B4 (de) 2012-12-11 2016-03-17 Carl Freudenberg Kg Dichtung, Verfahren zu deren Herstellung und Dichtungsanordnung damit
ES2681370T3 (es) 2012-12-28 2018-09-12 Flexible Steel Lacing Company Aparato y método de soldadura para cintas transportadoras
US9944057B1 (en) 2015-02-13 2018-04-17 Boral Ip Holdings (Australia) Pty Limited Elastomeric thermo-mechanical compensator
JP2016205537A (ja) * 2015-04-23 2016-12-08 バンドー化学株式会社 ベルト及びベルトの製造方法
CN110758982B (zh) * 2019-11-20 2022-03-22 浙江双箭橡胶股份有限公司 一种碳纤维芯橡胶输送带及其制造方法

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PT1005970E (pt) 2004-01-30
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KR100633489B1 (ko) 2006-10-13
ATE247545T1 (de) 2003-09-15
EP1005970A2 (de) 2000-06-07
EP1005970B1 (de) 2003-08-20
JP2000167943A (ja) 2000-06-20
KR20000047851A (ko) 2000-07-25
DK1005970T3 (da) 2003-12-01
EP1005970A3 (de) 2000-12-27
CN1262991A (zh) 2000-08-16
US6468656B1 (en) 2002-10-22

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