WO2005061768A1 - Tissu entrelace pour courroies - Google Patents

Tissu entrelace pour courroies Download PDF

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Publication number
WO2005061768A1
WO2005061768A1 PCT/US2003/037015 US0337015W WO2005061768A1 WO 2005061768 A1 WO2005061768 A1 WO 2005061768A1 US 0337015 W US0337015 W US 0337015W WO 2005061768 A1 WO2005061768 A1 WO 2005061768A1
Authority
WO
WIPO (PCT)
Prior art keywords
couplets
yams
weft
warp
yarns
Prior art date
Application number
PCT/US2003/037015
Other languages
English (en)
Other versions
WO2005061768A9 (fr
Inventor
Edward T. Mol
Original Assignee
Mol Belting Company
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mol Belting Company filed Critical Mol Belting Company
Priority to CA002513519A priority Critical patent/CA2513519A1/fr
Priority to MXPA06004526A priority patent/MXPA06004526A/es
Priority to EP03786879A priority patent/EP1689922A1/fr
Priority to AU2003295679A priority patent/AU2003295679A1/en
Priority to PCT/US2003/037015 priority patent/WO2005061768A1/fr
Priority to US10/543,194 priority patent/US20060073751A1/en
Publication of WO2005061768A1 publication Critical patent/WO2005061768A1/fr
Publication of WO2005061768A9 publication Critical patent/WO2005061768A9/fr

Links

Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D11/00—Double or multi-ply fabrics not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
    • B65G15/30—Belts or like endless load-carriers
    • B65G15/32—Belts or like endless load-carriers made of rubber or plastics
    • B65G15/34—Belts or like endless load-carriers made of rubber or plastics with reinforcing layers, e.g. of fabric

Definitions

  • This invention relates to belts for use on conveyors, treadmills, and the like, and more particularly to an interwoven belt fabric for use in such belts.
  • Endless belts are typically formed by j oining oppo site ends of a section of belt material and used in a number of different applications.
  • One commonly known application for such endless belts is in physical exercise equipment such as treadmills, as well as in various material handling applications such as check-out counters in stores, and the like.
  • a motor driven belt extends over a flat running deck.
  • the typical treadmill belt consists of woven material provided with a top layer of polyvinyl chloride or the like.
  • the belt preferably has specific characteristics such that the belt has a low coefficient of friction with the deck, has a consistent stability when under load, produces a minimum noise and provides enhanced performance with the addition of lubricants between the surface of the deck and the belt.
  • the type of fabric used determines certain characteristics of the belt, such as the coefficient of friction, ability to dissipate heat, ability to absorb lubricants, stability, and noise generation.
  • the quieter belts have a higher coefficient of friction and belts made with a multi-filament warp yarns (i.e., yarns with long staple lengths) tend to have a lower coefficient of friction than spun warp yarns (i.e., yarns with short staple lengths).
  • treadmill belts made with a typical plain weave fabric using multi-filament warp yarns and monofilament fibers in the weft generally have a relatively low coefficient of friction, but generate a relatively high level of noise.
  • multi-filament warp yarn is alternately woven over and under a series of adjacently disposed monofilament weft fibers.
  • a multi-filament warp extends over one monofilament weft and under three monofilament controller is manually operable from a location remote from the latches such that the latches are manually and remotely controlled
  • the present invention is a fingerboard having at least one fingerboard row for storing a plurality of threaded tubulars.
  • a plurality of latches are connected to the at least one fingerboard row, wherein each of the plurality of latches is biased into a locked position and movable between the locked position and an unlocked position.
  • a piston having an elongated rod is slidingly engaged with a casing, wherein the casing has a plurality of exhaust ports in fluid connection therewith, and wherein each of the plurality of exhaust ports is connected to a corresponding one of the plurality of latches.
  • An air source is in fluid connection with the casing, wherein the elongated rod is movable between a fully retracted position and a plurality of extended positions corresponding to each of the plurality of exhaust ports, wherein in the fully retracted position each of the exhaust ports are covered by the elongated rod, such that air from the air source cannot flow therethrough allowing each of the corresponding latches to be biased in the locked position, and wherein in each successive one of the plurality of extended positions a successive one of the plurality of exhaust ports is uncovered such that air flows therethrough to force a successive one of the corresponding latches to move from the locked position to the unlocked position.
  • the present invention is a fingerboard having at least one fingerboard row for storing a plurality of threaded tubulars.
  • a plurality of latches are connected to the at least one fingerboard row, wherein each of the plurality of latches is biased into a locked position and movable between the locked position and an unlocked position.
  • a piston having an elongated rod is slidingly engaged with a casing, wherein the casing has a plurality of exhaust ports in fluid connection therewith.
  • Each of a plurality of conduits fluidly connects one of the plurality of exhaust ports to a corresponding one of the plurality of latches.
  • An air source is in fluid connection with the casing, wherein the elongated rod is movable between a fully retracted position and a plurality of extended positions corresponding to each of the plurality of exhaust ports, wherein in the fully retracted position each of the exhaust ports are covered by the elongated rod, such that air from the air source cannot flow therethrough allowing each of the corresponding latches to be biased in the locked position, and wherein in each successive one of the plurality of extended positions a successive one of the plurality of exhaust ports is uncovered such that air flows therethrough to force a successive one of the corresponding latches to move from the locked position to the unlocked position.
  • a piston guide is connected to the piston and has a plurality of stop positions, wherein each of the plurality of stop positions corresponds to one of the plurality of extended positions of the elongated rod.
  • the present invention is a method of storing a plurality of threaded tubulars in a fingerboard including providing a fingerboard row for storing the plurality of threaded tubulars; providing a casing having a plurality of exhaust wefts.
  • Another prior art belt fabric, referred to as an interwoven fabric has a layer of upper monofilament weft yarns and a layer of lower monofilament weft yarns.
  • the two layers are separated by a light denier yarn and each of a plurality of multi-filament warp binder yarns extend under one of the lower monofilament weft yarns and over an adjacent upper monofilament weft yarn.
  • a problem with the prior art one-ply plain weave and whisper weave belts, when used in a treadmill belt or the like, is that they lack the desired stiffness required under various loads and at various speeds. When such materials are used, a two ply belt is typically required to obtain the desired stiffness. However, two ply belts are considerably more expensive to produce than single ply belts.
  • the manufacture of a two- layer belt may require as many as five passes through a belt making machine, one for the inner layer, one for the cover and three for the glue layers.
  • Prior art interwoven fabrics are generally considered to be undesirable for use in belts, because belts made of such fabrics are relatively noisy and the fabric typically has to be saturated with a plastic material to prevent the weft yarns from migrating out of the side of the belt.
  • Treadmill belts typically are operated at a higher speed than standard conveyer belts used for material handling and are typically subjected to greater concentrated loads as a result of the running action of a person on the belt. Hence, treadmill belts must be relatively stiff, particularly in the lateral direction.
  • Prior art one-ply and two-ply belts are comprised of a single layer of fabric or a double layer of a fabric, respectively, and a top cover layer of rubber or vinyl, or the like.
  • the majority of such belts use monofilament yarns in their weft since material of that construction typically provides a relatively stable belt that lays flat, does not bunch up, and tracks straight.
  • thicker belts are more stable than thinner belts and two-ply belts are more stable than one-ply belts.
  • lubricants are often applied between the belt and the rimning deck to further reduce friction.
  • a lubricant such as paraffin wax, Teflon®, or solventless silicone is commonly used to reduce friction between the belt and the deck.
  • the belt In order for a lubricant to be used effectively, however, the belt must be able to absorb a certain amount of the lubricant.
  • Certain prior art plain weave and interwoven belts having monofilament yams in their weft have the desirable properties that they tend to lay flat, do not bunch up, and track straight. However, such belts do not absorb or hold lubricants well.
  • 6,328,077 is two-ply fabric made of two layers of weft yams in couplets, with warp yarns extending over and under adjacent couplets in a pattern where warp yams extend under more couplets in the lower layer than extend over couplets in the upper layer.
  • a central warp yam of standard light denier extends between the upper and lower layers.
  • a belting fabric comprises a plurality of adjacently disposed couplets of weft yarns, a plurality of binder warp yarns, and a plurality of middle warp yams.
  • the couplets form an upper layer of weft yarns and a lower layer of weft yams.
  • the binder warp yarns each extend over at least one of the couplets of weft yarns in the upper layer and under at least two of said adjacently disposed couplets of weft yarns in the lower layer.
  • the middle warp yams extend between the upper layer and the lower layers and are sufficiently straight and inelastic to bear loads under tension without twisting or stretching.
  • the middle warp yarns are formed of PET and have a denier of at least 550.
  • the middle warp yams are heat set under tension.
  • a method of making a belting fabric includes the steps of arranging a plurality of couplets of weft yarns adjacent one another into an upper layer of weft yams and a lower layer of weft yams and weaving a plurality of middle warp yams between the upper and lower layers.
  • a first warp yam is woven over a first of said couplets of weft yams and under a second and a third of the couplets of weft yarns, disposed adjacent the first of the couplets, a second warp yarn over a second of the couplets of weft yams and under a third and fourth of the couplets of weft yarns, disposed adjacent the second of the couplets; and a third warp yarn over a third of the couplets of weft yams and under fourth and fifth of the couplets of weft yams, disposed adjacent the third of the couplets.
  • the middle warp yarns are heat set.
  • Fig. 1 is side elevational view of a section of conveyer belting material incorporating the principles of the invention
  • Fig. 2 is an enlarged side elevational view of the belting fabric of Fig. 1, having a weave pattern in accordance with principles of the invention
  • Fig. 3 illustrates the pattern of a single warp binder yam in the weave pattern of Fig. 2
  • > Fig. 4 is an enlarged side elevational view of a section of conveyer belting fabric of Fig. 1 having an alternate weave pattern in accordance with principles of the invention
  • Fig. 5 illustrates the pattern of a single warp binder yam in the weave pattern of Fig. 4.
  • FIG. 1 is a section of conveyor belting material 100 comprising a fabric layer 101 and a cover layer 102.
  • the cover layer 102 may be a standard rubber or plasticized polyvinyl material or the like.
  • One embodiment of a belting fabric 100 in accordance with the invention is illustrated in Fig. 2 in an enlarged side elevational view of a portion of the belt 100.
  • the belting fabric of Fig. 2 includes an upper layer of monofilament weft yarns 105 and a lower layer of monofilament weft yams 106.
  • the individual weft yarns of layer 105 are disposed in substantial alignment with individual weft yams of layer 106, forming a plurality of couplets, 110 through 119.
  • the monofilament weft yams preferably have a diameter of approximately 0.3 mm.
  • the two layers of weft yarns 105, 106 are separated by inelastic middle warp yarns 107 in accordance with the invention.
  • the middle warp yams are sufficiently straight and inelastic to bear loads under tension without twisting or stretching.
  • Each middle warp yarn 107 is preferably formed of PET having a denier of 550, although any polymer, rendered effectively inelastic, will suffice.
  • the middle warp yarns 107 are heat set under tension to make them straight and inelastic.
  • a plurality of binder warp yams 120,121,122 are woven on the weft yams to form a belt fabric.
  • the fabric layer 101 is woven in a repeating weaving pattern wherein three binder warp yarns 120, 121, and 122 are woven through a plurality of adjacently disposed couplets formed from aligned pairs of weft yams of layers 105 and 106, in a specified pattern.
  • the first binder warp yam 120 extends over a first aligned couplet of weft yams 110 and under second and third couplets 111, 112, respectively;
  • the second binder warp yarn 121 extends over the second couplet 111 and under third and fourth couplets 112,113, respectively;
  • the third binder warp yam 122 extends over the third couplet 122 and under fourth and fifth couplets 113,114, respectively.
  • Fig. 4 depicts an alternate embodiment of a belt 200 in accordance with the invention wherein the fabric 201 comprises four binder warp yarns 220, 221, 222, and 223 woven into two layers of weft yams 206,207.
  • the layers of weft yams 206,207 are separated by inelastic middle warp yams 208 in accord with the invention.
  • each middle warp yam 107 is preferably formed of PET having a denier of 550, although any polymer, rendered effectively inelastic, will suffice.
  • the middle warp yarns 107 are heat set under tension to make them straight and inelastic.
  • the binder warp yarns 220, 221, 222, 223 are preferably 1,000 denier yams and the weft yams 206,207 are preferably approximately 0.3 mm monofilament yarns.
  • the fabric 201 is woven in a repeating weaving pattern wherein four binder warp yams 220, 221, 222 and 223 are woven in a specified pattern through a plurality of couplets formed from pairs of aligned weft yarns of layers 206, 207.
  • the first binder warp yarn 220 extends over a first aligned couplet of weft yams 210 and under the second, third and fourth couplets 211, 212 and 213, respectively;
  • the second warp yarn 221 extends over the second couplet of weft yams 211 and under the third, fourth and fifth couplets 212, 213 and 214, respectively;
  • the ' third warp yam 222 extends over the third couplet of weft yams 212 and under the fourth, fifth and sixth couplets 213, 214 and 215, respectively;
  • the fourth warp yarn 223 extends over the fourth couplet of weft yams 213 and under the fifth, sixth and seventh couplets 214, 215 and 216, respectively.
  • Fig. 5 The specific pattern of the binder yams of Fig. 4 is further illustrated in Fig. 5 in which the pattern of a single binder warp yam, yarn 221 , is shown separate from the other binder warp yams.
  • Belt material in accordance with the present invention is preferably manufactured by feeding the woven belt fabric, e.g., 100, 200, from a roll of the fabric into a well- known belt coating apparatus.
  • Such apparatus typically includes a feeding mechanism extending the belt between a roller and a coating knife.
  • Liquid PNC such as a well- known product referred to in the trade as "Plastisol," is applied in a standard fashion.
  • the belt material with the newly applied coating is then fed into an oven and heated by infrared lamps or the like to dissolve the applied PNC. After passing through the oven, the belt material with the applied PNC is fed between a roller and a cooling drum while cooling the belt. This causes the PNC to be forced into cavities in the woven material.
  • One advantage of the belting fabric is that it has cavities of substantial size that provide for proper adhesion of the PNC layer to the fabric.
  • glue lining required for belts made of prior art belt fabrics is not required.
  • the application of such a glue lining requires that the belt material be fed through a glue application mechanism, similar to the PNC application mechanism. Accordingly, a belt made in accordance with the present invention is substantially less expensive to manufacture.
  • middle warp yams are believed to be the ones primarily under tension during operation of the belt. Since they are the load-carrying yams, the upper and lower layers on either side of the middle warp yarns are under no load, an thus do not wear as quickly as belts of the prior art. The result is a more durable belt.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Woven Fabrics (AREA)

Abstract

L'invention concerne un tissu de courroie entrelacé (100, 200) destiné aux transporteurs, y compris les tapis rouants, qui est composé de deux couches de fils de trame (105, 106, 206, 207) comportant plusieurs doubles contigus (110-119, 210-219), plusieurs fils de chaîne intermédiaires (107, 208) et plusieurs fils de chaîne de liage (120-122, 220-222). Chaque fil de chaîne intermédiaire est stabilisé thermiquement sous tension afin qu'il soit suffisamment droit et inélastique pour supporter des charges sous tension sans torsion ni allongement.
PCT/US2003/037015 2003-11-18 2003-11-18 Tissu entrelace pour courroies WO2005061768A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
CA002513519A CA2513519A1 (fr) 2003-11-18 2003-11-18 Tissu entrelace pour courroies
MXPA06004526A MXPA06004526A (es) 2003-11-18 2003-11-18 Tela para banda entretejida.
EP03786879A EP1689922A1 (fr) 2003-11-18 2003-11-18 Tissue entrelace pour courroies
AU2003295679A AU2003295679A1 (en) 2003-11-18 2003-11-18 Interwoven belt fabric
PCT/US2003/037015 WO2005061768A1 (fr) 2003-11-18 2003-11-18 Tissu entrelace pour courroies
US10/543,194 US20060073751A1 (en) 2003-11-18 2003-11-18 Interwoven belt fabric

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2003/037015 WO2005061768A1 (fr) 2003-11-18 2003-11-18 Tissu entrelace pour courroies

Publications (2)

Publication Number Publication Date
WO2005061768A1 true WO2005061768A1 (fr) 2005-07-07
WO2005061768A9 WO2005061768A9 (fr) 2005-09-15

Family

ID=34709621

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2003/037015 WO2005061768A1 (fr) 2003-11-18 2003-11-18 Tissu entrelace pour courroies

Country Status (5)

Country Link
EP (1) EP1689922A1 (fr)
AU (1) AU2003295679A1 (fr)
CA (1) CA2513519A1 (fr)
MX (1) MXPA06004526A (fr)
WO (1) WO2005061768A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB826011A (en) * 1956-01-19 1959-12-23 John Lewis Improvements in or relating to belting for conveyors, elevators or the transmission of power
US3872895A (en) * 1970-10-07 1975-03-25 Takatao Kojyo Co Ltd Woven fabric for safety belts of high energy-absorbency
EP0278769A2 (fr) * 1987-02-13 1988-08-17 Scapa Group Plc Tissu pour papeterie
US5376440A (en) * 1993-03-31 1994-12-27 Ikeda Bussan Co., Ltd. Woven fabric for seat belt
WO2000035785A1 (fr) * 1998-12-14 2000-06-22 The Goodyear Tire & Rubber Company Bandes transporteuses en tissu de renforcement forme de trois couches entrelacees
US6328077B1 (en) * 1998-10-29 2001-12-11 Mol Belting Company Interwoven belt fabric
US20020142687A1 (en) * 1998-12-24 2002-10-03 Masahiro Tanabe Woven webbing structure

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB826011A (en) * 1956-01-19 1959-12-23 John Lewis Improvements in or relating to belting for conveyors, elevators or the transmission of power
US3872895A (en) * 1970-10-07 1975-03-25 Takatao Kojyo Co Ltd Woven fabric for safety belts of high energy-absorbency
EP0278769A2 (fr) * 1987-02-13 1988-08-17 Scapa Group Plc Tissu pour papeterie
US5376440A (en) * 1993-03-31 1994-12-27 Ikeda Bussan Co., Ltd. Woven fabric for seat belt
US6328077B1 (en) * 1998-10-29 2001-12-11 Mol Belting Company Interwoven belt fabric
WO2000035785A1 (fr) * 1998-12-14 2000-06-22 The Goodyear Tire & Rubber Company Bandes transporteuses en tissu de renforcement forme de trois couches entrelacees
US20020142687A1 (en) * 1998-12-24 2002-10-03 Masahiro Tanabe Woven webbing structure

Also Published As

Publication number Publication date
WO2005061768A9 (fr) 2005-09-15
EP1689922A1 (fr) 2006-08-16
MXPA06004526A (es) 2006-07-06
AU2003295679A1 (en) 2005-07-14
CA2513519A1 (fr) 2005-07-07

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