US3646639A - Porcupine rollers - Google Patents

Porcupine rollers Download PDF

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Publication number
US3646639A
US3646639A US7082A US3646639DA US3646639A US 3646639 A US3646639 A US 3646639A US 7082 A US7082 A US 7082A US 3646639D A US3646639D A US 3646639DA US 3646639 A US3646639 A US 3646639A
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Prior art keywords
roller
needle
needle bars
roller body
porcupine
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Expired - Lifetime
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US7082A
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English (en)
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Christoph Burckhardt
Walter Glaser
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G19/00—Combing machines
    • D01G19/06—Details
    • D01G19/10—Construction, mounting, or operating features of combing elements
    • D01G19/105—Combing cylinders

Definitions

  • ABSTRACT A porcupine roller wherein the roller body has needle bars releasably attached to the surface. Outwardly pointing needles are mounted on the needle bars.
  • the roller body has on its outer surface a plurality of retaining grooves extending sub stantially parallel to the axis of rotation of the roller bodyv
  • the cross section of the needle bars fits the cross section of the grooves so that the needle bars may be inserted into the grooves and held securely against displacement in the direction of rotation of the roller body.
  • Means are provided for adjusting the position of the needle bars in the axial direction of the roller body.
  • porcupine rollers which have a roller substantially in the form of a hollow cylinder normally of brass whose periphery is provided with outwardly pointing needles. Such porcupine rollers have found a wide field of application in transporting, perforating, combing and stretching and recently have been used for fibrillating plastic sheets.
  • the roller body has been provided with a large number of small radial or inclined holes, in which slightly conical needles are fixed from the inside or from the outside, and are securely fixed by pressure.
  • the holes after the removal of the needles, are somewhat widened so that only needles of a larger diameter can subsequently be securely mounted and this can unfavorably affect the work the roller is intended to perform.
  • the roller body is provided on its cylindrical exterior surface with a number of retaining grooves which run substantially parallel to the axis of the roller and the cross sections of the needle bars fit into those of the grooves so that the needle bars can be pushed into the grooves and there fixed against any forces acting in the direction of rotation of the roller.
  • the retaining grooves have a dovetail cross section.
  • each needle bar can be provided with two parallel sections connected to each other by a bridge, one section being used to anchor the needle bar to the roller body and the other to accommodate the needles.
  • FIG. 1 shows part of one end of a roller in which a needlebar is being inserted into a dovetail-section groove on the periphery of the roller
  • FIGS. 2a and 2b are cross sections of needle bars
  • FIG. 3 shows a roller with needle bars which can be screwed in place
  • FIG. 4 shows, in cross section, one of the needle bars represented in FIGURE 3,
  • FIG. 5 illustrates a modified construction with screw-on needle bars
  • FIG. 6 is a cross section of a roller, the needle bars being shown without needles,
  • FIG. 7a and 7b illustrate a cross-sectional view, on an enlarged scale, of a further embodiment of porcupine roller permitting adjustment of the angle of the needles, and
  • FIGS. 8a to 10 show, in cross section, further embodiments permitting easy displacement of the needle bars in the axial direction of the roller.
  • FIG. 1 one end portion of a porcupine roller is shown, the numeral 1 generally denoting the roller.
  • This roller has a roller-body 2 of substantially hollow-cylindrical form with a plurality of dovetail-shaped retaining grooves 3 around its periphery.
  • the grooves 3 run parallel to the main axis of the roller, and are uniformly spaced around the periphery of the roller body 2.
  • a metal needle bar 4 whose cross section corresponds to that of the dovetail grooves 3, bears a number of needles 5 arranged in a straight line.
  • the needles 5, which in their lower parts have a slightly conical shape, extend through cylindrical holes provided in the needle bars 4 and are held firmly on account of their conical shape.
  • the exterior dimensions of the needle bars 4 are selected so that each needle bar may be inserted into a groove 3 of the roller body 2 and then secured in place. Since during use of the porcupine roller virtually no axially directed forces act on the needle bars 4, these do not need to be secured by further securing members. The lateral securing of the needle bars 4 using a flange ring or similar securing element is also possible.
  • the whole row of needles can easily and quickly be exchanged by simple replacement of the corresponding needle bar 4. Also it is possible without difficulty, if the need arises, to replace all the needle bars 4 of a porcupine roller by other needle bars provided with needles of a different size. Also the total number of needles on a porcupine roller can, if desired, be reduced e.g., halved by removal of every second needle bar.
  • the empty grooves are then preferably filled with blind bars (i.e. needleless bars). Detailed sections of two forms of needle bar 4 are shown in FIGS. 20 and 2b.
  • Shapes other than a dovetail shape can be considered for the grooves, provided foolproof securing of the needle bars 4 on the roller body 2 is possible. Also the securing of the needles in the needle bars 4 can be accomplished in any desired manner for example by soldering or adhesively securing.
  • the grooves 6 in the outer periphery of the roller body 2 are of substantially rectangular cross section.
  • Each of the corresponding needle bars 7 (see FIG. FIGURE 4) is provided with two parallel longitudinal sections 9a and 9b which are connected to each other by a bridge 8.
  • This section 9a serves to anchor the needle bar on the roller body and the section 9b serves to accommodate the needles 5.
  • the needle bars 7, in contrast to the embodiment according to FIG. 1, must be fastened to the roller body 2. This can be accomplished by means of easily disconnectable fastening elements, advantageously by means of screws I0, which can be screwed into corresponding threaded holes provided in the base of each groove.
  • FIG. 5 shows the end portion of a porcupine roller with two needle bars 7 screwed onto an ungrooved roller body.
  • the cross section of the needle bars shown in FIG. 4 has been approved in practice. It would theoretically, however, also be possible to have the needle bars of simple rectangular cross section and to screw these onto the roller body.
  • the great advantage of the porcupine rollers described is displayed especially in fibrillating plastics sheets in which the needles of the needle bars are subjected to severe demands.
  • relatively expensive bronze or brass roller bodies 2 can be used for a long time, the needle bars being replaced from time to time.
  • a further possibility for securing the needle bars 4 in the grooves 3 resides in the use of a resilient action in which the longitudinal sides of each needle-bar are pressed against the neighboring walls of the groove.
  • the needle bars 4 can have a tolerance relative to the grooves.
  • an adjusting means can be placed in the groove, for example a metal or plastics wire or a strip of any suitable material.
  • This adjusting means can either lie only on the base of the groove, (as denoted by numeral 11 in FIG. 1) or (for example as shown by numeral 12 in FIG. 2b can also extend up the longitudinal sides of the needle bar.
  • FIG. 6 of the drawings shows a simplified section of the roller-body 2 carrying needle bars 14 on its periphery. These needle bars 14, whose needles for the sake of simplicity are not shown, are held at either end by a ring 15 which is screwed into place.
  • the needles 5 (FIGS. 2a, 2b and 4) of the needle bars must often be inclined at an angle to the corresponding radius of the porcupine roller. This means that the needles are not placed perpendicularly in the corresponding needle bar (as in FIGS. 2a) but at an angle (as in FIGS. 2b and 4).
  • FIGS. 7a and 7b A particular orientation of inclined needles in a needle bar can only be used for a quite limited number of applications, for example for fibrillating special materials, and when changing from one material to another the needle bars must be replaced by others with a different inclination of the needles.
  • This disadvantage is overcome by the embodiment shown in FIGS. 7a and 7b.
  • a needle bar 17 On the periphery of a roller body 16 (only part of which is shown) a needle bar 17 is inserted in a dovetail groove.
  • the numeral 18 denotes an extension of a radius of the roller radius through the needle bar 17, the axis of symmetry of the needle bar is devoted by 19 and the extension of the axis of the needles by 20.
  • the symmetry axis 19 and the extension of the radius 18 form an angle a which can also be measured between a line 21 defining the lower boundary of the needle bar and a line 22 perpendicular to the roller radius.
  • the needle axis 20 is displaced by an angle [3 from the axis of symmetry 19 of the needle bar, which can either equal the angle nor can differ therefrom.
  • the two angles a and B add up to a total angle at which the needles are inclined to the extension of the roller radius 18. If however, the needle bar 17 is reversed in the dovetail groove, so that its longitudinal sides are interchanged, the angles a and B are subtracted from each other and a new angle of inclination of the needles results. In the embodiment according to FIGS. 7a and 7b, the angle a is equal to the angle B, so that the needle axis, on reversal of the needle bar 17, as shown in FIGS. 7b, coincides with the extension 18 of the roller radius.
  • the user of the porcupine roller described has available two different needle angles and needs only to obtain a single set of needle bars.
  • a reversal of the needle bars 17 gives a zero needle inclination (FIG. 71;) or a desired angle given by the difference of the angles a and ,8.
  • the needles of adjacent needle bars should lie (in the direction of rotation of the porcupine roller) not exactly in line with each other, but be displaced with reference to each other. Since this, however, is not true for all cases, and the optimum measurement of the degree of displacement can alter from case to case, it would be advantageous if the individual needle bars could be displaced in the direction of their own longitudinal axis.
  • FIGS. 8a to Sc show the roller body 2 on which a needle bar 23 is provided in a dovetail groove.
  • a holding ring 24 Fastened on one end face of the roller body 2 by means of screws 25, is a holding ring 24.
  • a number of blind holes 27, uniformly spaced around the periphery of the roller body 2 are provided in one end-face of the roller body, one-half 27a of the cross section of each hole being provided in the roller-body 2 and the other half 27b being provided in the needle bar 23. Only that half 27b of the hole provided in the needle bar 23 is threaded, the other half 270 being unthreaded and corresponding in radius to a clearance hole for the thread.
  • the outer edge of the retaining ring 24 is provided with an upwardly open U-shaped recess 28 through which the shaft 29 of a bolt 30 extends.
  • the head 3] of the bolt abuts the outer surface of the retaining ring 24, while a collar 32 formed on the shaft of the bolt lies close to the inner surface of the retaining ring 24.
  • Turning the bolt 30, via its head 31, causes the bolt to move the needle bar 23 in the direction of its longitudinal axis, the bolt itself being held substantially without axial translation, within the recess 28. In this manner the position of the needle bar 23 on the roller body 2 can be adjusted with great precision, the threaded part of the bolt 30 making driving engagement with the needle bar 23 inside the half 27b of the hole while the bolt freely rotates in the other half 37a of the hole.
  • a retaining ring 33 is fastened with screws 34 to one end-face of the roller body 2.
  • the shaft 35 of an adjusting bolt 36 is provided with a wasted portion adjacent to its head which cooperates with the U-shaped recess of the retaining ring 33 to hold the bolt 36 against axial translation during rotation thereof whereby the needle bar 37 is moved axially by the threaded part of the bolt 36.
  • FIGURE 10 A further variation is illustrated in simplified form in FIGURE 10.
  • the roller body 2 is provided with a number of holes 38 corresponding to the holes 27 of FIGS. 8b and 9.
  • the rim of the roller-body 2 is here however provided with a slot 39, which is spaced inwardly a short distance from the end of the roller body.
  • Into this slot 39 there partially extends the flange 40 of a threaded adjusting member 41.
  • the member 41 On rotation of the member 41 via a square-ended projection 42, the member 41 remains without translatory movement, while the needle bar is moved along as it engages with the screw thread of the adjusting member 41.
  • a scale 43 can be provided on the head of the adjusting member 41 between the flange 40 and the projection 42, to permit an exact and reproducible positioning of the needle bar.
  • a porcupine roller comprising a roller body, needle bars releasably attached to the surface of said roller body, outwardly pointing needles mounted on said needle bars, said roller body having on its outer surface a plurality of retaining grooves extending substantially parallel to the axis of rotation of said roller body, the cross section of said needle bars fitting the cross section of said grooves so that said needle bars may be inserted into said grooves and held securely against displacement in the direction of rotation of said roller body, and means for adjusting the position of said needle bars in the axial direction of said roller body.
  • each needle bar is provided on its lower surface with a longitudinal groove separating leg portions thereof allowing a movement of the leg portions of the needle bar towards each other during mounting of the needle bar in a groove in the roller body so that the needle bar is held firmly in position on account of its resilience.
  • a porcupine roller according to claim 3 wherein the angle between the axis of symmetry of the needle bar and the axis of the needles equals the angle between the axis of symmetry of the needle bar and the radius of said roller body.
  • a porcupine roller according to claim 1 wherein an endface of said roller has a plurality of semicircular grooves parallel to the axis of rotation of said roller body, each of said needle bars having threaded semicircular grooves cooperating with said first named grooves to form a hole, an inner portion of said hole being unthreaded and having a somewhat greater diameter, a threaded adjusting member located in each of said holes without undergoing translational movement whereby each of said needle bars can be displaced in the direction of its longitudinal axis by rotation of said adjusting member.
  • a porcupine roller according to claim 5 wherein said roller-body has a slot extending in a peripheral direction of said roller-body, and each adjusting member is provided with a flange which locates in said slot.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Preliminary Treatment Of Fibers (AREA)
US7082A 1969-01-31 1970-01-30 Porcupine rollers Expired - Lifetime US3646639A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH155769A CH505919A (de) 1969-01-31 1969-01-31 Nadelwalze

Publications (1)

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US3646639A true US3646639A (en) 1972-03-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
US7082A Expired - Lifetime US3646639A (en) 1969-01-31 1970-01-30 Porcupine rollers

Country Status (6)

Country Link
US (1) US3646639A (enrdf_load_stackoverflow)
BE (1) BE745098A (enrdf_load_stackoverflow)
CH (1) CH505919A (enrdf_load_stackoverflow)
DE (2) DE6905504U (enrdf_load_stackoverflow)
FR (1) FR2029764A1 (enrdf_load_stackoverflow)
GB (1) GB1294930A (enrdf_load_stackoverflow)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3780399A (en) * 1972-02-10 1973-12-25 Laroche & Fils Constr Mec Fiber opening machine
US4606095A (en) * 1984-10-18 1986-08-19 Staedtler & Uhl Saw-toothed stamped metal part as outfit for a comb segment of a porcupine
US4625366A (en) * 1984-10-18 1986-12-02 Staedtler & Uhl. Opening cylinder for open-end spinning machines or the like
US4627131A (en) * 1985-07-11 1986-12-09 Kanai Juyo Kogyo Co., Ltd. Combing roller for an open-end spinning machine
US4862688A (en) * 1987-10-12 1989-09-05 Hollingsworth Gmbh Opening cylinder for open-end spinning machine
US4868952A (en) * 1986-04-10 1989-09-26 Heinz Buess Opening cylinder
US5019110A (en) * 1987-08-03 1991-05-28 Ringtex-Kolifrath S.A.R.L. Needle ring with needles for the combing cylinder of an open-end spinning machine
US5168602A (en) * 1990-04-30 1992-12-08 Maschinenfabrik Rieter Ag Opening roller having inclined beater elements for opening and cleaning machine
US20080040893A1 (en) * 2006-06-23 2008-02-21 Graf + Cie Ag Combing means for a comb of a combing machine
WO2008155565A1 (en) 2007-06-21 2008-12-24 Swelltec Limited Swellable apparatus and method of forming
WO2008155564A1 (en) 2007-06-21 2008-12-24 Swelltec Limited Apparatus and method with hydrocarbon swellable and water swellable body
WO2009003771A1 (en) * 2007-07-04 2009-01-08 Nv Bekaert Sa Clamping of comb unit
US20110143899A1 (en) * 2009-12-13 2011-06-16 Roy Wirth Agricultural harvester stripper roller
WO2011138261A1 (de) * 2010-05-03 2011-11-10 Oerlikon Textile Gmbh & Co. Kg Vorrichtung zum fibrillieren
WO2011138263A1 (de) * 2010-05-03 2011-11-10 Oerlikon Textile Gmbh & Co. Kg Verfahren und vorrichtung zum fibrillieren synthetischer bänder
US8627610B1 (en) 2010-11-09 2014-01-14 Prime.Line Products Co. Privacy enclosure
US9115449B2 (en) 2011-03-01 2015-08-25 Burckhardt Of Switzerland Ag Needling device
CN110004526A (zh) * 2019-04-28 2019-07-12 圣华盾防护科技股份有限公司 一种拆换式角钉辊筒

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH606528A5 (enrdf_load_stackoverflow) * 1975-10-28 1978-11-15 Schlumberger Cie N
GB1571494A (en) * 1976-04-23 1980-07-16 Mackie & Sons Ltd J Faller bars
CH625275A5 (enrdf_load_stackoverflow) * 1978-02-01 1981-09-15 Rieter Ag Maschf
CH635137A5 (de) * 1979-02-16 1983-03-15 Burckhardt Christoph Ag Zirkularkamm fuer baumwoll- oder wollkaemmaschine.
GB2182364A (en) * 1985-10-17 1987-05-13 James Francis Moore Faller bars
DE4033263A1 (de) * 1990-10-19 1992-04-23 Staedtler & Uhl Nadelstab fuer textilmaschinen
DE19631809A1 (de) * 1996-08-07 1998-02-12 Gerald Koinzer Nadelbelag
DE29720784U1 (de) * 1997-11-22 1998-01-08 Blömker GmbH, 49536 Lienen Walzenkörper
DE19800371A1 (de) * 1998-01-09 1999-07-15 Rieter Ag Maschf Vorrichtung zum Abtragen von Faserflocken und Verfahren zur Herstellung von Zähnen einer Abtragwalze
DE19837499A1 (de) * 1998-08-13 2000-02-17 Wki Isoliertechnik Gmbh Berlin Verfahren und Vorrichtung zur Herstellung von fibrillierten Folien aus Polypropylen oder Polyäthylen
DE102010033546A1 (de) 2010-08-05 2012-02-09 Oerlikon Textile Gmbh & Co. Kg Vorrichtung zum Fibrillieren

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1431904A (en) * 1922-10-10 Half lap for combing machines
DE552414C (de) * 1930-03-27 1932-06-13 Ernst Noll Dipl Ing Kratzenbeschlag
US2940129A (en) * 1956-02-02 1960-06-14 Stewart & Sons Wm R Hackling machines
US3123866A (en) * 1958-02-25 1964-03-10 figure

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1431904A (en) * 1922-10-10 Half lap for combing machines
DE552414C (de) * 1930-03-27 1932-06-13 Ernst Noll Dipl Ing Kratzenbeschlag
US2940129A (en) * 1956-02-02 1960-06-14 Stewart & Sons Wm R Hackling machines
US3123866A (en) * 1958-02-25 1964-03-10 figure

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3780399A (en) * 1972-02-10 1973-12-25 Laroche & Fils Constr Mec Fiber opening machine
US4606095A (en) * 1984-10-18 1986-08-19 Staedtler & Uhl Saw-toothed stamped metal part as outfit for a comb segment of a porcupine
US4625366A (en) * 1984-10-18 1986-12-02 Staedtler & Uhl. Opening cylinder for open-end spinning machines or the like
US4627131A (en) * 1985-07-11 1986-12-09 Kanai Juyo Kogyo Co., Ltd. Combing roller for an open-end spinning machine
US4868952A (en) * 1986-04-10 1989-09-26 Heinz Buess Opening cylinder
US5019110A (en) * 1987-08-03 1991-05-28 Ringtex-Kolifrath S.A.R.L. Needle ring with needles for the combing cylinder of an open-end spinning machine
US4862688A (en) * 1987-10-12 1989-09-05 Hollingsworth Gmbh Opening cylinder for open-end spinning machine
US5168602A (en) * 1990-04-30 1992-12-08 Maschinenfabrik Rieter Ag Opening roller having inclined beater elements for opening and cleaning machine
US20080040893A1 (en) * 2006-06-23 2008-02-21 Graf + Cie Ag Combing means for a comb of a combing machine
EP1870498A3 (de) * 2006-06-23 2008-06-04 Graf + Cie AG Zahngarnitur für einen Kamm einer Kämm-Maschine
WO2008155565A1 (en) 2007-06-21 2008-12-24 Swelltec Limited Swellable apparatus and method of forming
WO2008155564A1 (en) 2007-06-21 2008-12-24 Swelltec Limited Apparatus and method with hydrocarbon swellable and water swellable body
WO2009003771A1 (en) * 2007-07-04 2009-01-08 Nv Bekaert Sa Clamping of comb unit
US20110143899A1 (en) * 2009-12-13 2011-06-16 Roy Wirth Agricultural harvester stripper roller
US8790228B2 (en) * 2009-12-13 2014-07-29 Felton, Inc. Agricultural harvester stripper roller
WO2011138261A1 (de) * 2010-05-03 2011-11-10 Oerlikon Textile Gmbh & Co. Kg Vorrichtung zum fibrillieren
WO2011138263A1 (de) * 2010-05-03 2011-11-10 Oerlikon Textile Gmbh & Co. Kg Verfahren und vorrichtung zum fibrillieren synthetischer bänder
CN102869820A (zh) * 2010-05-03 2013-01-09 欧瑞康纺织有限及两合公司 原纤化装置
CN102884229A (zh) * 2010-05-03 2013-01-16 欧瑞康纺织有限及两合公司 用于原纤化合成丝带的方法和装置
US9011134B2 (en) 2010-05-03 2015-04-21 Oerlikon Textile Gmbh & Co., Kg Method and apparatus for fibrillating synthetic ribbons
US8627610B1 (en) 2010-11-09 2014-01-14 Prime.Line Products Co. Privacy enclosure
US9115449B2 (en) 2011-03-01 2015-08-25 Burckhardt Of Switzerland Ag Needling device
CN110004526A (zh) * 2019-04-28 2019-07-12 圣华盾防护科技股份有限公司 一种拆换式角钉辊筒
CN110004526B (zh) * 2019-04-28 2020-08-14 圣华盾防护科技股份有限公司 一种拆换式角钉辊筒

Also Published As

Publication number Publication date
DE6905504U (de) 1970-09-17
DE1907007A1 (de) 1970-08-06
GB1294930A (enrdf_load_stackoverflow) 1972-11-01
FR2029764A1 (enrdf_load_stackoverflow) 1970-10-23
CH505919A (de) 1971-04-15
BE745098A (fr) 1970-07-01

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