US3036345A - Swingable supported drafting rolls - Google Patents

Swingable supported drafting rolls Download PDF

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Publication number
US3036345A
US3036345A US797968A US79796859A US3036345A US 3036345 A US3036345 A US 3036345A US 797968 A US797968 A US 797968A US 79796859 A US79796859 A US 79796859A US 3036345 A US3036345 A US 3036345A
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United States
Prior art keywords
drafting
roller
supported
rollers
rolls
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Expired - Lifetime
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US797968A
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English (en)
Inventor
Naegeli Werner
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.)
Joh Jacob Rieter & Co
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Joh Jacob Rieter & Co
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Publication date
Application filed by Joh Jacob Rieter & Co filed Critical Joh Jacob Rieter & Co
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/44—Adjusting drafting elements, e.g. altering ratch

Definitions

  • the present invention relates to a drafting arrangement for spinning machines.
  • the position of the drawing rollers in the plane of the drafting field can be changed by moving the bearings of the drawing rollers in the roller stand and fixing the bearings in the desired positions.
  • the characteristics of the drafting arrangement which determine the guidance of the spinning material and consequently the quality of the drafting process, are not changed when the length of the drafting field is increased.
  • the overall conditions are made worse because of the change of the ratio between the controlled or guided length of the spinning material and the uncontrolled length of the spinning material.
  • the drafting arrangement according to the invention overcomes the disadvantages of the conventional arrangements by swingably supporting below the drafting field a group of drafting and top rolls forming at least one nip.
  • a plurality of groups of drafting rolls and top rolls may be supported swingable on the same axis whereby the loading means for the top rolls swings simultaneously with the groups and remains operative in any position within predetermined limits.
  • the drafting arrangement according to the invention is technologically advantageous because the length of the fibrous material which is in contact with the drawing roll becomes greater at increasing distance between the hips, when a more effective guidance is needed. Adjustment of the length of the drafting field is considerably simplified by the arrangement according to the invention. Exact setting is facilitated by a curved scale mounted on the machine .frame on which scale the position of a line moving with the rockable group of rolls can be seen.
  • the drive is so arranged that, when the distance between the nips is changed without changing the drafting conditions, nothing need be changed on the transmission. This is made possible by the rockable arrangement of the roller groups whereby the pinions mounted on the drafting roller extensions roll on their driving gears which are coaxial of the rocking axis.
  • FIG. 1 is a perspective view of a drafting arrangement according to the invention.
  • FIG. 2 is a large scale view of a detail of the drafting arrangement shown in FIG. 1 with parts broken away.
  • FIG. 3 is a diagrammatic perspective illustration of the drive of the drafting arrangement shown in FIGS. 1 and 2.
  • FIG. 4 is a diagrammatic illustration of the drafting arrangement so adjusted that the drafting field is relatively short.
  • FIG. 5 is a diagrammatic illustration of the drafting arrangement so adjusted that the drafting field is relatively long.
  • Each drafting arrangement includes a slowly rotating drafting roll 3 and a top roll 4, forming a feed roller pair 5.
  • the drafting rollers 3 of each drafting roller group are supported by hearing heads 7 individually mounted on arms 6 (FIG. 2).
  • the top roll 4 is provided with trunnions -8 and 9 supported by holders 10, 11, respectively, which are guided to move substantially in the direction of the load.
  • the arms 6 which are made fast to a pipe 13 by means of screws 12, are arranged on the left side of the respective supports 2 as seen in FIGS. 1 and 2.
  • the pipe 13 extends through all juxtaposed drafting arrangements of the spinning machine and is rotatably loosely supported in bores 14 in the supports or stands 2.
  • the arms 6, the drafting rolls 3, and the pipe 13 form rigid systems which are rockable on the axis of the pipe 13.
  • a hose 16 Inside the latter is a hose 16 inside of which there is a pressurized medium pressing the hose in downward direction against a shoe 17, one of which is provided for each system.
  • the shoes act on linkages 18 'which transmit the pressure exerted by the hose 16 as load to the respective trunnions 8, 9 of a top roll.
  • Each linkage 18 extends through a bore 19 in the bearing head 7 to the respective holder 10, 11 whereby parallelism with the feed roller 3 is assured.
  • the bearings for two adjacent coaxial drafting rollers form a unit.
  • the bearings for the respective top rollers are separated to facilitate individual removal of the top rolls.
  • An arcuate slot 20 is provided in the upper part of each roller stand 2 for receiving an arresting bolt 21 extending from the arm 6. Washers 22 and a nut 23 serve for fixing the bolt 21 and thereby the arm 6 in a desired position on the stand 2.
  • Scales 24 and 25 provided on the upper ridge of the stands 2 facilitate adjustment of the position of the bearing heads 7. If the bearings for the coaxial drafting rollers are interconnected it is sulficient to provide scales only on the first stand 2 which is at the driving end of the machine and on the last stand.
  • the grooves 8' can be omitted in the respective holders as shown in FIG. 1 in connection with the top roll 28 resting on two drafting rollers 26 and 27 and forming a roller trio 29.
  • the rollers 26 and 27 are supported in a bearing head 30 supported by an arm 31 which is located on the right side or forward of the support 2.
  • the lower portion 32 of the arm 31 is relatively wide and is rigidly connected to a pipe 3-3 extending through the entire machine.
  • the arm 31 is not connected to the pipe 13 and can swing thereon (FIG. 2).
  • the pipe 33 contains a hose 34 which presses on a shoe corresponding to the shoe 17 whereby the pressure is transmitted through a linkage 36 guided in a bore 35 in the bearing head 30 to the top roller holders 37, 3-8, respectively.
  • the arm 31 with the enlargements 32, the pipe 33- and the pair of drawing rollers 26 and 27 form a rigid unit which is rockable on the axis 15 of the pipe 13. This unit can be arrested by means of an arresting bolt 39 extending through the slot 20 (FIG. 2).
  • Each support 2 has an aperture 40 through which the pipe 33 extends and which is so large that the arm 31 with the pipe 33 can be swung to an extreme position corresponding to the longest fibres or the greatest distance between the nips formed by the roller pair 5 and the roller trio 29.
  • a delivery roller trio 41 comprising drafting rollers 42, 43 and a top roll 44 is not movable relatively to the support 2, the drafting rollers being rotatably supported 3 7 in a bearing block 45 forming part of the support 2.
  • the top roll 44 is loaded by a load producing system 46 from which the load is transmitted through a linkage 47 to saddles resting on the trunnions of the top roll similar to the loading arrangement for the top rolls 4 and2x8.
  • All drafting rollers are drivenby a drive shaft 48 (FIG. 3).
  • the larger one (-49) of a double gearSt) mountedon the shaft 48 transmits rotation through a pinion 51 to the delivery roller 42 wherefrom rotation is transmitted through a connecting gearing :52 to thesecond delivery roller 43.
  • the smaller one (53) of the double gear 50 engages a gear 54 mounted on a shaft 55 extending from the feed drafting roller 3 and connected to the shaft 48 by a rocking'lever or link 56.
  • a second gear 57 mounted on the shaft 55 engages the smaller one (58) of a double gear 59 which is rotatable on the main shaft 48.
  • the larger one (60) of the double gear 59 engages a pinion 61 which is coaxial of and rigidly connected to the drafting roller 26.
  • the pinion 61 is mounted on an extension of the roller 26 which extension is swingably said arms being swingably supported by said roller stands connected to the shaft 48 by means of a rocking lever 62 g which also supports a connecting gearing 63 and an extension 64 of the second drafting roller 27 driven by the pinion 61 through thegearing 63. If the positions of the roller units 5 and 29 are changed, the levers 56 and 62 are swung through the same angle as the arms 6 and 31.
  • the gears54, 57 and 61 when the respective double gears 50 and 59. There is no change gear and no axial displacement of gears.
  • FIGS. 4 and 5 The mechanism according to the invention is schematically shown in FIGS. 4 and 5.
  • FIG. 4 A narrow adjustment of the drafting arrangement as required for short stapled fibre material is shown in FIG. 4 whereas FIG. 5 shows the: relative positions of the elements of the mechanism suitable for long stapled material.
  • FIGS..4 and 5 show the angle athrough which the fibrous material engages the second drafting rollers 27 of the unit 29, whereby the angle at as measured from the nip of the rollers 27, 28, becomes greater upon rocking of the system on the axis 15 through the angle gamma for increasing the length of the drafting field whereby guidance of the material is improved. 6
  • a drafting arrangement for spinning machines com prising draftingrollers forming at least two roller groups forming a drafting field between the nips of the'roller groups, atleast'one of'said groups being swingably supported below the drafting field and guided to move on an 7 arcuate path for changing the distance between the roller groups; whereby the angular extent of engagement of the drafted material with the drafting roller of the group is and pairwise carrying said swingably supported roller s p- 3.
  • a drafting arrangement according to claim 2 including an element rigidly connecting said arms and being oscillatingly supported by said roller stands.
  • each roller group includes a top roll, load producing means being operatively connected to said element, and load transmitting means being provided, individually interconnecting said load producing means and the top roll of the swingably supported group.
  • each roller group includes a top roll, load producing means being operatively connected to said arms; and load transmitting means being provided, individually interconnecting said load producing means and the top roll of the swingably supported group whereby said load producing means and said load transmitting means are swingable on the same axis as said arms.
  • each roller group includes a draftingroller and a top roller, a main drive shaft being placed coaxially of the swing axis of the swingably supported roller group, driving gears being rigidly connected to said main drive shaft, gears being coaxially connected to the drafting roller of the swingably supported group'and' individually engaging said driving gears and rolling thereon upon swinging of said swingable group.
  • a drafting arrangement for spinning machines comprising drafting rollers forming: at least two roller groups forming a drafting field between the nips of the roller groups, said groups being coaxially individually swingably supported below the drafting field and guided to move on an arcuate path for changing the distance between the roller groups whereby the extent of engagement of the drafted material with the drafting rollers of said groups 'is increased upon increase of the length of the drafting field between said groups'and is'decreased' upon decrease of the length of the drafting field between said groups.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US797968A 1958-03-12 1959-03-09 Swingable supported drafting rolls Expired - Lifetime US3036345A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH3036345X 1958-03-12

Publications (1)

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US3036345A true US3036345A (en) 1962-05-29

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ID=4573594

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US797968A Expired - Lifetime US3036345A (en) 1958-03-12 1959-03-09 Swingable supported drafting rolls

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US (1) US3036345A (enrdf_load_html_response)
CH (1) CH359636A (enrdf_load_html_response)
DE (1) DE1116583B (enrdf_load_html_response)
FR (1) FR1221301A (enrdf_load_html_response)
NL (1) NL99465C (enrdf_load_html_response)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3314114A (en) * 1964-02-19 1967-04-18 Turbo Machine Co Apparatus for processing textiles
US3368246A (en) * 1964-04-10 1968-02-13 Misitano A G Ing Textile drawing apparatus
US5010624A (en) * 1988-12-09 1991-04-30 Hans Stahlecker Spinning machine having several spinning points

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2595918A (en) * 1947-10-08 1952-05-06 Collins & Aikman Corp Control of textile fibers during drafting operations
US2607083A (en) * 1948-11-17 1952-08-19 Collins & Aikman Corp Textile fiber drafting frame
US2624075A (en) * 1947-02-04 1953-01-06 Collins & Aikman Corp Universal spinning frame

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR577539A (fr) * 1923-03-10 1924-09-06 Fine Cotton Spinners & Doubler Perfectionnements dans la préparation de matières fibreuses pour filature
CH268500A (de) * 1947-03-19 1950-05-31 Rieter Joh Jacob & Cie Ag Streckwerk mit Belastungsschiene.
GB674142A (en) * 1949-05-04 1952-06-18 Howard & Bullough Ltd Improvements relating to the drafting apparatus of textile spinning and analogous machines
DE918013C (de) * 1951-01-28 1954-09-16 Zellwolle Lehrspinnerei G M B Streckwerk mit Oberwalzen ohne Seitenfuehrung (Zwillingswalzen)
FR1154117A (fr) * 1955-05-26 1958-04-02 Estirajes Balmes Mécanisme pour l'étirage de mèches et rubans de fibres textiles

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2624075A (en) * 1947-02-04 1953-01-06 Collins & Aikman Corp Universal spinning frame
US2595918A (en) * 1947-10-08 1952-05-06 Collins & Aikman Corp Control of textile fibers during drafting operations
US2607083A (en) * 1948-11-17 1952-08-19 Collins & Aikman Corp Textile fiber drafting frame

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3314114A (en) * 1964-02-19 1967-04-18 Turbo Machine Co Apparatus for processing textiles
US3368246A (en) * 1964-04-10 1968-02-13 Misitano A G Ing Textile drawing apparatus
US5010624A (en) * 1988-12-09 1991-04-30 Hans Stahlecker Spinning machine having several spinning points

Also Published As

Publication number Publication date
FR1221301A (fr) 1960-06-01
NL99465C (enrdf_load_html_response)
CH359636A (de) 1962-01-15
DE1116583B (de) 1961-11-02

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