US3050789A - Device for supporting and guiding belts of drafting assemblies - Google Patents

Device for supporting and guiding belts of drafting assemblies Download PDF

Info

Publication number
US3050789A
US3050789A US830830A US83083059A US3050789A US 3050789 A US3050789 A US 3050789A US 830830 A US830830 A US 830830A US 83083059 A US83083059 A US 83083059A US 3050789 A US3050789 A US 3050789A
Authority
US
United States
Prior art keywords
guide rail
supporting
drafting
connecting strip
belts
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
US830830A
Other languages
English (en)
Inventor
Rogner Ernst
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.)
SKF GmbH
Original Assignee
SKF Kugellagerfabriken GmbH
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 SKF Kugellagerfabriken GmbH filed Critical SKF Kugellagerfabriken GmbH
Application granted granted Critical
Publication of US3050789A publication Critical patent/US3050789A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • D01H5/26—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by one or more endless aprons

Definitions

  • the present invention relates to the drafting section of spinning machines used in manufacturing yarns.
  • the rovings are drafted, and part of the drafting structure includes belts between which the rovings move.
  • the present invention is particularly concerned with the structure which supports and guides the upper belts of such drafting assemblies.
  • One of the objects of the present invention is to provide a device capable of supporting and guiding the upper belt of a drafting assembly and at the same time being of such great strength that it will be capable of withstanding any of the forces which otherwise would result in the deformation of a conventional device of this type.
  • Another object of the present invention is to provide a belt supporting and guiding device of the above type which while being quite strong at the same time is made of relatively simple components and is quite compact and easy to combine with the other drafting structure.
  • the present invention includes a device for supporting and guiding an upper drafting belt which extends around a top roll of a drafting assembly of a spinning machine.
  • This device of the invention includes a supporting strip in which a portion of an axle of the top roll is journalled
  • An elongated guide rail is located forwardly'of this supporting strip and has a front edge around which the upper belt passes, and this guide rail is substantially parallel to the axis of the top roll.
  • a connecting strip of the structure of the invention is fixed rigidly with and extends along this guide rail, and this connecting strip is integral with the supporting strip, so that the bearing and connecting strips together with the guide 'rail form a unitary assembly which is quite strong and capable of withstanding large forces without any undesirable deformation.
  • FIG. 1 is a sectional illustration of a device according to the present invention, the conventional structure which is associated with the device of the invention being illustrated in dot-dash lines;
  • FIG. 2 is a front end view of the structure of the invention, and in FIG. 2 the conventional parts are also illustrated in dot-dash lines;
  • FIG. 3 is a top plan view of the device of the invention, and FIG. 3 also illustrates the conventional structure in dot-dash lines;
  • FIG. 4 diagramrnaically illustrates the entire drafting assembly showing how the structure of the invention is incorporated therein.
  • top rolls carrying arm 1 is shown in dot-dash lines in FIG. 1.
  • this top rolls carrying arm 1 is pivotally connected with a plurality of levers which respectively terminate in saddles which respectively embrace the axle portions which extend between the sev eral pairs of top rolls so that in this way the severali pairs of top rolls are connected to the top rolls carrying arm 1.
  • a pair of coaxial top rolls 2 are interconnected by the axle 3, and the saddle which is illustrated in dot-dash lines in FIG. 1 embraces the axle 3 in a conventional manner.
  • the axle 3 has a pair of axially spaced supporting portions located between the top rolls 2, and a pair of supporting strip portions 4 of the device of the invention extend around and receive the supporting portions of the axle 3 so as to serve as supports therefor.
  • the entire device of the invention is indicated with reference character 5.
  • the device of the invention further includes a substantially S-shaped leaf spring 6 which has an upper free end portion (FIG. 1) engaging beneath the front end of the saddle which cooperates with the axle 3 so as to urge the device 5 downwardly in a counterclockwise direction around the axis of the axle 3, and in this way the device 5 is maintained in its operating position where it cooperates with the lower guide rail 8 shown in MG.
  • the device 5 of the present invention includes an elongated guide rail 10 which extends parallel to the axis of the top rolls 2 and which extends over the lower guide rail 8, and the belts 9 pass around the front edge of the guide rail it), this front edge being located at the left on the guide rail 1!], as viewed in FIG. 1, so that with the structure of the invention the upper belts 9 have a large full area of contact with the lower belts 7 to provide the best possible drafting action.
  • the lower bolts 7 not only pass around the guide rail 8 but they also pass around the bottom rolls 11, and these bottom rolls 11 are driven in a known way.
  • the free ends of the supporting strips 4 which are distant from the guide rail 1d are interconnected by a suitable connecting strip which is in fact integralwi-th the supporting strips 4, this latter connecting strip being shown at the right end of the strips 4, as viewed in FIG. 1.
  • a suitable connecting strip which is in fact integralwi-th the supporting strips 4, this latter connecting strip being shown at the right end of the strips 4, as viewed in FIG. 1.
  • the supporting strips 4 are rigidly fixed with an elongated connecting strip 12 which in the illustrated example is integral with the supporting strips 4.
  • This elongated connecting strip 12 extends parallel to the common axis of the rolls 2 along the guide rail 1d and has a considerable area overlapping an intermediate portion of the guide rail It so as to provide a large area of contact between the connecting strip 12 and the guide rail 11
  • the connecting strip 12 is rigidly fixed with the guide rail 10 as, for example, by being welded thereto.
  • the connecting strip 12 can be spot welded to the guide rail 19 so as to be permanently and rigidly connected therewith whereby the supporting member including the supporting strips 4 and the connecting strip 12 forms a unitary structure with the guide rail 10.
  • the connecting strip 12 is provided ,at its free ends which are located beyond the ears 13 with additional guide membersor cars 14 which respectively cooperate with the outer edges of the belts 9, so thateach belt 9 passes between a pair of cars 13 and 14 to be laterally guided thereby.
  • An intermediate portion 12' of the. connecting strip 12 is spaced from the top surface or upper side of the rail to define with the latter 'a space extending transversely to. the longitudinal direction of the guide rail through which a portion of the leaf spring 6 passes,'so that in this way the leaf spring 6 is connected with the structure by being partially received between the intermediate portion of the guide rail it and the adjacent portion of the connecting strip 12.
  • the leaf spring 6 is bent downwardly, as is evident from FIG. 1, so that it-has a free end portion 6' extending along the downwardly inclined left portion of the guide rail 10, as viewed in FIG. 1. This free end portion 6' prevents falling of the leaf spring 6 from the remainder of the structure of the invention.
  • the guide rail 10 Adjacent to its frontiedge the guide rail 10 threadedly carries an abutment member in the form of a screw 15 whose lower portion or head end extends downwardly beyond the underside of the guide rail 10 and rests directly on the lower guide rail 8 of the spinning machine, so that the top surface of the rail 8 acts as a stop surface cooperating with the screw 15 for determining the operating position of the deviceS and thus determinating the position of the belts 9.
  • By turning the screw 15 it is therefore possible to adjust the elevation of the guide rail 10 and hence the operating position of the device 5.
  • FIG. 4 The orientation of the structure of the invention in the entire-drafting machine is shown in FIG. 4.
  • the drafting machine includes a suitable base structure which supports the several bottom rolls for adjustable movement in the direction of the drawing field.
  • the several bottom rolls are carried by bearings which are themselves shiftable along the inclined supporting surface shown in FIG. 4 in both-directions along the rovings.
  • the lower guide rail 8 is carried by the bearing which supports the front bottom rolls, and the bottom rolls 11 are clearly illustrated in FIG. 4 supported by their own adjustable bearing.
  • the belts 7 which respectively cooperate with the belts 9 extend around the guide rail 8 as well as around the pair of coaxial bottomrolls 11, and the supporting base of the structure carries a tensioning roll which hangs in the belts 7 adjacent to their lowermost portions for the purpose of tensioning these belts 7.
  • the supporting frame of the drafting assembly includes an elongated bar which extends horizontally throughout the entire series of drafting units and to which an upwardly directed arm is clamped in the manner shown in FIG. 4.
  • an upwardly directed arm is clamped to the bar, and each of these upwardly directed arms is pivotally connected with a top rolls carrying arm 1, so that the latter is turnable downwardly to the operating position illustrated in FIG. 4 as well as upwardly to an inopera: tive position.
  • FIG. 4 also illustrates the pivoted members which are turnably carried by the arm 1 and which terminate at their left free ends, as viewed in FIG. 4, in thesaddles which extend around the shafts between the several pairs of top rolls.
  • the device 5 When the top rolls carrying arm 1 is turned up to its inoperative or rest position, the device 5 turns in a counterclockwise direction, as viewed in FIG. 1, around the axle 3 and hangs from the latter. When the arm 1 is returned to its operative position, the operator temporarily turns the device 5 together with the belts 9 in a clockwise direction so that the belts 9 rest on the belts 7, and thereafter the device is again ready for operation.
  • the spacing of the intermediate portion 12' of the connecting strip 12 from the guide rail 10 enables the leaf spring 6 to be assembled with the remainder of the structure after the welding of the connecting strip 12 to the guide rail 19.
  • the connecting strip 12 may be provided with strengthening ribs which may either take the formrof separate ribs fastened to the member 12 or the latter may be suitably shaped so as to be provided with ribs on one side and grooves on the other side also for the purpose of strengthening the structure by rendering it more-rigid.
  • a device for supporting and guiding an upper drafting belt which extends around a top roll, said'device comprising, in combination, a supporting member includroll and at least a portion of said connecting strip means extending along one side and adjacent to an intermediate portion of said guide rail, said portion of the connecting strip means being rigidly connected with the intermediate portion of said guide rail so as to reinforce the same and so that the supporting member and the guide rail form a unitary structure; a leaf spring having a first portion received between said portion of the connecting strip means and the intermediate portion of said guide rail, and a second portion extending beyond the upper side of said guide rail; and belt guiding members rigid with said unitary structure and extending beyond the upper side of said guide rail.
  • a device for supporting and guiding an upper drafting belt which extends around a top roll comprising, in combination, a supporting member including supporting strip means in which a portion of a shaft of the top roll is received and connecting strip means integral with said supporting strip means; an elongated guide rail located forwardly of said supporting strip means and having an upper side, an underside, and a front edge around which the upper belt passes, said guide rail being substantially parallel with the axis of the top roll and at least a portion of said connecting strip means extending along one side and adjacent to an intermediate portion of said guide rail, said portion of the connecting strip means being rigidly connected with the intermediate portion of said guide rail so as to reinforce the same and so that the supporting member and the guide rail form a unitary structure, said portion of the connecting strip means extending in the longitudinal direction of said guide rail and defining with said intermediate portion a space extending transversely to the longitudinal direction of said guide rail; a substantially S-shaped leaf spring having a first portion received in
  • a device for supporting and guiding a pair of upper drafting belts which respectively extend around a pair of coaxial top rolls comprising, in combination, a supporting member including a pair of identical supporting strips located beside and in alignment with and spaced from each other and respectively receiving shaft portions of the top rolls, and a connecting strip integral with and extending forwardly of said supporting strips; and elongated guide rail located forwardly of said supporting strips and having an upper side, an underside, and a front edge around which the upper belts pass, said guide rail being substantially parallel with the axes of the top rolls and at least a portion of said connecting strip extending along one side and adjacent to an intermediate portion of said guide rail, said portion of the connecting strip being rigidly connected with the intermediate portion of said guide rail so as to reinforce the same and so that the supporting member and the guide rail form a unitary structure; a leaf spring having a first portion received between the intermediate portion of said guide rail and said portion of the connecting strip, and a second portion extending
  • a device for supporting and guiding a pair of upper drafting belts which respectively extend around a pair of coaxial top rolls comprising, in combination, a supporting member including a pair of identical supporting strips located beside and in alignment with and spaced from each other and respectively receiving shaft portions of the top rolls, and a connecting strip integral with and extending forwardly of said supporting strips; an elongated guide rail located forwardly of said sup porting strips and having an upper side, an underside, and a front edge around which the upper belts pass, said guide rail being substantially parallel with the axes of the top rolls and at least a portion of said connecting strip extending dong one side and adjacent to an intermediate portion of said guide rail, said portion of the connecting strip being rigidly connected with the intermediate portion of said guide rail so as to reinforce the same and so that the supporting member and the guide rail form a unitary structure; a leaf spring having a first portion received between the intermediate portion of said guide rail and said portion of the connecting strip, and
  • a device for supporting and guiding a pair of upper drafting belts which respectively extend around a pair of coaxial top rolls comprising, in combination, a supporting member including a pair of identical supporting strips located beside and in alignment with and spaced from each other and respectively receiving shaft portions of the top rolls, and a connecting strip integral with and extending forwardly of said supporting strips; an elongated guide rail located forwardly of said supporting strips and having an upper side, an underside, and a front edge around which the upper belts pass, said guide rail being substantially parallel with the axes of the top rolls and at least a portion of said connecting strip extending along the upper side and adjacent to an intermediate portion of said guide'rail, said portion of the connecting strip being rigidly connected with the intermediate portion of said guide rail so as to reinforce the same and so that the supporting member and the guide rail form a unitary structure; a leaf spring having a first portion received between the intermediate portion of said guide rail and said portion of the connecting strip, and a second portion

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US830830A 1958-08-05 1959-07-31 Device for supporting and guiding belts of drafting assemblies Expired - Lifetime US3050789A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3050789X 1958-08-05

Publications (1)

Publication Number Publication Date
US3050789A true US3050789A (en) 1962-08-28

Family

ID=8085287

Family Applications (1)

Application Number Title Priority Date Filing Date
US830830A Expired - Lifetime US3050789A (en) 1958-08-05 1959-07-31 Device for supporting and guiding belts of drafting assemblies

Country Status (2)

Country Link
US (1) US3050789A (de)
FR (1) FR1226394A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3222731A (en) * 1962-03-17 1965-12-14 Skf Kugellagerfabriken Gmbh Top roller support arrangement for a textile drawing mechanism
US3331907A (en) * 1966-08-29 1967-07-18 Samson G Salzinger Resin curing method
US3665559A (en) * 1970-01-15 1972-05-30 Nippon Seiko Kk Mechanism for supporting an apron draft mechanism of a spinning machine
US4538329A (en) * 1980-10-31 1985-09-03 Murata Kikai Kabushiki Kaisha Draft device
US4656695A (en) * 1984-05-11 1987-04-14 Zinser Textilmaschinen Gmbh Drafting assembly for a spinning machine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB745127A (de) *
US2708290A (en) * 1951-11-30 1955-05-17 Skf Kugellagerfabriken Gmbh Double belt drawing mechanism
US2789320A (en) * 1954-12-08 1957-04-23 Skf Kugellagerfabriken Gmbh Textile drawing mechanisms
US2941262A (en) * 1955-05-18 1960-06-21 Rieter Joh Jacob & Cie Ag Cradle for top rolls of double apron drafting arrangements

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB745127A (de) *
US2708290A (en) * 1951-11-30 1955-05-17 Skf Kugellagerfabriken Gmbh Double belt drawing mechanism
US2789320A (en) * 1954-12-08 1957-04-23 Skf Kugellagerfabriken Gmbh Textile drawing mechanisms
US2941262A (en) * 1955-05-18 1960-06-21 Rieter Joh Jacob & Cie Ag Cradle for top rolls of double apron drafting arrangements

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3222731A (en) * 1962-03-17 1965-12-14 Skf Kugellagerfabriken Gmbh Top roller support arrangement for a textile drawing mechanism
US3331907A (en) * 1966-08-29 1967-07-18 Samson G Salzinger Resin curing method
US3665559A (en) * 1970-01-15 1972-05-30 Nippon Seiko Kk Mechanism for supporting an apron draft mechanism of a spinning machine
US4538329A (en) * 1980-10-31 1985-09-03 Murata Kikai Kabushiki Kaisha Draft device
US4656695A (en) * 1984-05-11 1987-04-14 Zinser Textilmaschinen Gmbh Drafting assembly for a spinning machine

Also Published As

Publication number Publication date
FR1226394A (de) 1960-07-11

Similar Documents

Publication Publication Date Title
US2565228A (en) Drawing mechanism for spinning and roving frames
US3050789A (en) Device for supporting and guiding belts of drafting assemblies
US5379488A (en) Sliver guiding arrangement for drafting units of spinning machines
US2239863A (en) Draw frame
US2708290A (en) Double belt drawing mechanism
US2758340A (en) Drafting mechanism
US2329655A (en) Drafting mechanism for spinning and roving frames
US2079122A (en) Drafting mechanism
US2323882A (en) Drafting mechanism for roving frames
US2458852A (en) Roll tension device
US2573081A (en) Twister frame spindle support
US1799448A (en) Drawing mechanism for fibrous material
US3086255A (en) Cleaning device for drawing frames of spinning machines
US2955330A (en) Double-apron drafting mechanism
US2519769A (en) Spindle driving mechanism for spinning frames
US2884664A (en) Mechanism for applying pressure to the drafting rollers of spinning and other textile preparatory machines
US2107378A (en) Fine spinning frame
US1817143A (en) Yarn separator
US2875476A (en) Drafting frame
US2286602A (en) Spinning frame and similar machines
US3028636A (en) Cradle for top rolls of double apron drafting arrangements
US2263975A (en) Pressure applying means for spinning frames
US2749575A (en) Drawing mechanism
US2441110A (en) Creel structure for spinning and roving frames
US2568502A (en) Drafting apparatus