US3807615A - Toothed piddler belts - Google Patents

Toothed piddler belts Download PDF

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Publication number
US3807615A
US3807615A US00295663A US29566372A US3807615A US 3807615 A US3807615 A US 3807615A US 00295663 A US00295663 A US 00295663A US 29566372 A US29566372 A US 29566372A US 3807615 A US3807615 A US 3807615A
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US
United States
Prior art keywords
belts
belt
piddler
tow
grooves
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
US00295663A
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English (en)
Inventor
T Crocker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Priority to US00295663A priority Critical patent/US3807615A/en
Priority to NL7313737A priority patent/NL7313737A/xx
Application granted granted Critical
Publication of US3807615A publication Critical patent/US3807615A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00—Forwarding filamentary material
    • B65H51/02—Rotary devices, e.g. with helical forwarding surfaces
    • B65H51/04—Rollers, pulleys, capstans, or intermeshing rotary elements
    • B65H51/08—Rollers, pulleys, capstans, or intermeshing rotary elements arranged to operate in groups or in co-operation with other elements
    • B65H51/10—Rollers, pulleys, capstans, or intermeshing rotary elements arranged to operate in groups or in co-operation with other elements with opposed coacting surfaces, e.g. providing nips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00—Forwarding filamentary material
    • B65H51/02—Rotary devices, e.g. with helical forwarding surfaces
    • B65H51/04—Rollers, pulleys, capstans, or intermeshing rotary elements
    • B65H51/08—Rollers, pulleys, capstans, or intermeshing rotary elements arranged to operate in groups or in co-operation with other elements
    • B65H51/10—Rollers, pulleys, capstans, or intermeshing rotary elements arranged to operate in groups or in co-operation with other elements with opposed coacting surfaces, e.g. providing nips
    • B65H51/105—Rollers, pulleys, capstans, or intermeshing rotary elements arranged to operate in groups or in co-operation with other elements with opposed coacting surfaces, e.g. providing nips one of which is an endless belt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00—Forwarding filamentary material
    • B65H51/14—Aprons, endless belts, lattices, or like driven elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • This invention relates to apparatus for receiving and distributing a moving, wet filamentary tow or other continuous length of fibrous material. More particularly, it relates to an apparatus for receiving running lengths of wet tow at high speed and delivering the wet tow smoothly to a can or other stationary container positioned beneath the apparatus.
  • the present invention provides an improved apparatus for piddling moving continuous lengths of wet fibrous material.
  • the apparatus comprises a belt piddler having two endless belts mounted in vertical spatial proximity on driving and tension rolls and adapted for receiving a continuous length of fibrous material from above and delivering said material to a designated point beneath the piddler.
  • the improvement in the apparatus consists in the belts in the piddler being provided with a multiplicity of grooves transverse to the direction of the travel of the belts and on the surface of the belts which contacts the fibrous material.
  • the endless belts should be somewhat wider than the width of the moving continuous lengths .of fibrous material.
  • the two belts preferably have the same width.
  • the grooves in the belt should cross most of the area of the surface of the belt which is contacted by moving continuous length of fibrous material.
  • the grooves are continuous across the entire Width of the belt.
  • FIG. 1 is an elevation view of a belt piddler in accordance with the present invention.
  • FIG. 2 is an enlarged view of the profile of the belt at point A of FIG. 1, and
  • FIG. 3 is an enlarged view of an alternative profile of DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
  • the belt piddler is generally designated by reference numeral 12 and comprises two belts designated by reference numerals l and 2, which are mounted to be in close proximity and form a nip of some length during a part of their respective travel.
  • Belt 1 is mounted on rolls 3 and 4, being driven by drive roll 3.
  • Belt 2 is similarly mounted on rolls 5 and 6, being driven by drive roll 5.
  • Rolls 4 and 6 are air loaded tension rolls.
  • the belts are made to contact or almost contact each other by the placement of these rolls and by the use of idler rolls 7 and 8 over which belt 1 runs and idler rolls 9 and 10 over which belt 2 runs.
  • Idler roll 9 is an air loaded compression roll. All of the rolls are mounted on plate 18, drive rolls 3 and 5 being driven at the same surface speed bp means of gears 11 mounted behind the plate.
  • the moving tow 13 is fed from a source-(not shown) over roll 14 to and through guide 15 and thence to belt piddler 12. It first passes into the upper nip 20 of the belts and is carried between beltsl and 2 to the lower nip 21, at which point it is discharged'from the belts into a traverse guide 16 which isan oscillating funnel or boot. Under this guide 16 is a can or container 17 in which the tow 13 is deposited.
  • the traverse guide is mounted in gimbals 19 below the belt.
  • the container 17 may be rotated or traversed as desired, and when filled, is removed and replaced by an empty container in accordance with conventional practice.
  • the belts have grooves transverse to the direction of travel of the belt provided in their outer surface 22, which is the surface which contacts the moving continuous length of fibrous material.
  • An enlarged view of the profile of one embodimentof the grooved belt is shown in FIG. 2.
  • the belts have a saw-toothed profile at their outer. face and the grooves are V-shaped, meeting each other at the surface so that the surface has no flat portion.
  • FIG. 3 An enlarged view of the profile of another embodiment of the grooved belt is shown in FIG. 3.
  • the belts have a profile in which the grooves have sloping sides and flat portions at the bottoms of the grooves, being spaced to provide flat portions on the surface of the belt equal in length to the flat portions at the bottoms of the grooves.
  • the outer surfaces of the belts may also have other profiles providing a-multiplicity of groovestransverse to the direction of travel of the belt.
  • the grooves may have vertical walls separated by flat portions on the surface of the belt and flat portions at the bottoms of the grooves.
  • the profile of the outer surface of the belts may also be a sinuous curve. Other configurations of the profile of the outer surface of the belt will be readily apparent.
  • the belts employed in the apparatus of this invention may be made of rubber or a tough, resilient, synthetic polymer such as polyvinyl chloride. Other equivalent materials may be used to form the main composition of the belt, with or without a surface coating as desired.
  • the belts may be reinforced with a fabric of polyesterfibers, cotton, rayon, or other suitable fibers. Other suitablev reinforc ing structures within the belt may be used.
  • the direction of belt 2 has a greater deviation from vertical as it approaches tension roll 6 than the direction of belt 1 as it approaches tension roll 4.
  • the more nearly vertical direction of belt 1 is helpful under some circumstances in assisting a vertical discharge of the continuous length of fibrous material from the belts.
  • tension rolls 4 and 6 may be mounted in such positions that the belt directions have the same deviation from vertical as they approach the bottom.
  • the term continuous length of fibrous material is meant to include not only tows of continuous filaments but also ropes or yarns of continuous filaments as well as slivers of staple fibers and other equivalent fibrous structures.
  • the advantages of employing the grooved belts of the invention are most readily observed in handling continuous lengths of tibrous materials which are quite wet, i.e., containing an amount of water equal to at least half of the dry weight of the continuous length of fibrous material.
  • the piddlers employing the grooved belts may also be used for handling dry moving continuous lengths of tibrous material, or continuous lengths of such material which are only somewhat moist.
  • a piddler having the design shown in FIG. 1 is equipped with two grooved belts comprised of V 70 percent polyvinyl chloride by weight reinforced with 30 percent by weight of a fabric of polyester fiber.
  • Each belt has an outside surface, or fiber-contactingsurface, having a saw-toothed profile such as that depicted in FIG. 2.
  • Each belt is 0.15 inch thick, measured between the inside surface of the belt and the furthermost points of the outside surface of the belt; and the distance between peaks of the saw-toothed profile is 0.15 inch.
  • the depth of the grooves (vertical distance between peaks and valleys) is 0.05 inch.
  • the belts are 70 inches long and 6.5 inches wide.
  • the piddler is employed to receive tows of spun acrylonitrile polymer filaments containing about 1 15,000 filaments per tow and having a moisture content of percent water, based on the weight of the dry tow.
  • the individual filaments have a denier per filament of about 10.
  • the moving tow is taken up by the piddler at the rate of about 400 yards per minute and is discharged vertically at the same rate through an oscillating funnel into a container positioned below the piddler.
  • the incidence of wraps around one of the belts of the piddler attributable to malfunction of the piddler is fewer than one wrap per month.
  • a piddler having conventional, ungrooved belts is employed to handle tows of acrylonitrile polymer filaments of the same size and same moisture content, at the same rate of delivery and discharge.
  • the conventional belts are made of polyvinyl chloride reinforced by fabric and have a somewhat roughened surface comprising an embossed pattern of diamond-shaped indentations having a depth of 0.010 inch and having each side of the diamond measuring approximately 5/64 of an inch.
  • an apparatus for piddling continuous moving lengths of wet fibrous tow including a belt piddler having two vertically mounted endless belts having vertical sections with smooth surfaces in contiguous relation to form a means for gripping said material and advancing it to a designated point beneath the piddler, said wet tow having a tendency to wrap around one of the belts, the improvement comprising: the surfaces of said belts in contiguous relation having a plurality of transverse grooves therein, whereby the incidence of wraps of said wet tow around one of said belts is reduced.

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  • Treatment Of Fiber Materials (AREA)
US00295663A 1972-10-06 1972-10-06 Toothed piddler belts Expired - Lifetime US3807615A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US00295663A US3807615A (en) 1972-10-06 1972-10-06 Toothed piddler belts
NL7313737A NL7313737A (enrdf_load_stackoverflow) 1972-10-06 1973-10-05

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00295663A US3807615A (en) 1972-10-06 1972-10-06 Toothed piddler belts

Publications (1)

Publication Number Publication Date
US3807615A true US3807615A (en) 1974-04-30

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ID=23138697

Family Applications (1)

Application Number Title Priority Date Filing Date
US00295663A Expired - Lifetime US3807615A (en) 1972-10-06 1972-10-06 Toothed piddler belts

Country Status (2)

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US (1) US3807615A (enrdf_load_stackoverflow)
NL (1) NL7313737A (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59106642U (ja) * 1982-12-28 1984-07-18 株式会社サツキ製作所 加工材料の連続送出装置
USRE32996E (en) * 1982-12-28 1989-07-25 Continuous delivery apparatus for work material
GB2294442A (en) * 1994-10-26 1996-05-01 Portsmouth Tech Consult Endless belt drive for a cable
US6505731B2 (en) * 2001-02-09 2003-01-14 Teepack Spezialmaschinen Gmbh & Co. Kg Transport device for strand materials in continuous production of infusion bags for making tea
US20040031239A1 (en) * 2002-06-06 2004-02-19 Bernhard Schoennagel Method and device for depositing a filament tow
US7191580B2 (en) 2002-06-06 2007-03-20 Neumag Gmbh & Co. Kg Apparatus for depositing a filament tow

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59106642U (ja) * 1982-12-28 1984-07-18 株式会社サツキ製作所 加工材料の連続送出装置
USRE32996E (en) * 1982-12-28 1989-07-25 Continuous delivery apparatus for work material
GB2294442A (en) * 1994-10-26 1996-05-01 Portsmouth Tech Consult Endless belt drive for a cable
GB2294442B (en) * 1994-10-26 1998-04-29 Portsmouth Tech Consult Belt drive arrangements
US6505731B2 (en) * 2001-02-09 2003-01-14 Teepack Spezialmaschinen Gmbh & Co. Kg Transport device for strand materials in continuous production of infusion bags for making tea
US20040031239A1 (en) * 2002-06-06 2004-02-19 Bernhard Schoennagel Method and device for depositing a filament tow
US7107740B2 (en) * 2002-06-06 2006-09-19 Neumag Gmbh & Co. Kg Method and device for depositing a filament tow
US7191580B2 (en) 2002-06-06 2007-03-20 Neumag Gmbh & Co. Kg Apparatus for depositing a filament tow

Also Published As

Publication number Publication date
NL7313737A (enrdf_load_stackoverflow) 1974-04-09

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