US3315916A - Bobbin construction - Google Patents

Bobbin construction Download PDF

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Publication number
US3315916A
US3315916A US460698A US46069865A US3315916A US 3315916 A US3315916 A US 3315916A US 460698 A US460698 A US 460698A US 46069865 A US46069865 A US 46069865A US 3315916 A US3315916 A US 3315916A
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US
United States
Prior art keywords
tube
flange
bobbin
flanges
yarn
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
US460698A
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English (en)
Inventor
Scaglia Mario
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.)
M Scaglia SpA
Original Assignee
M Scaglia SpA
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Filing date
Publication date
Application filed by M Scaglia SpA filed Critical M Scaglia SpA
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/04—Kinds or types
    • B65H75/08—Kinds or types of circular or polygonal cross-section
    • B65H75/14—Kinds or types of circular or polygonal cross-section with two end flanges
    • 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
    • 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
    • B65H2701/50—Storage means for webs, tapes, or filamentary material
    • B65H2701/51—Cores or reels characterised by the material
    • B65H2701/513—Cores or reels characterised by the material assembled mainly from rigid elements of the same kind
    • B65H2701/5134—Metal elements
    • B65H2701/51342—Moulded metal 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
    • B65H2701/50—Storage means for webs, tapes, or filamentary material
    • B65H2701/51—Cores or reels characterised by the material
    • B65H2701/515—Cores or reels characterised by the material assembled from parts made of different materials
    • B65H2701/5152—End flanges and barrel of different material
    • B65H2701/51526—Metal barrel

Definitions

  • This invention relates to improvements in the construction of bobbins of the type adapted for having yarn wound thereon.
  • the yarn is of the kind spun from man-made fibers.
  • the general form of construction of the bobbin includes a tube with end flanges mounted on the tube.
  • the yarn exerts a lateral force on the flanges tending to displace the flanges off the tube. If an opening or fissure should be formed in the joint between the adjacent surfaces of the flanges and tube, it is possible to snag the yarn in such fissure which will result in breakage in the yarn when it is unwound from the bobbin.
  • Yet another object of the invention is to provide means for elastically and adjustably controlling the magnitude of such pro-stressing.
  • a substantially cylindrical metallic tube was employed whereon the yarn is wound, and both ends of the tube are upset and upturned against related flanges, which are thereby secured on the tube parallel with each other and thus perpendicular to the tube axis.
  • the flanges can be made of a suitable material such as plastic, Bakelite, metal, or the like.
  • the flanges must be adequately secured on the bobbin tube to prevent the formation of fissures or openings between the inner surfaces of the flanges and the outer surface of the tube when the bobbin is being wound with the related yarn.
  • the present invention is directed to an entirely novel concept.
  • the invention is characterized by the provision of a suitable elastic pre-stressing which is produced by suitable means, in a direct or indirect way, in each flange, which is fitted in a related seat in the tube.
  • a system of inwardly directed internal stresses is produced in each flange to thereby counteract and resist the laterally applied outwardly directed stresses which are produced when the yarn is being wound on the bobbin.
  • the means for producing said elastic pre-stresses in the flanges comprises at least one elastic ring seated in a suitable annular groove that extends in a generally radial plane extending substantially perpendicular to the tube axis, in the inner peripheral wall of each flange, said annular groove being delimitated all along its base by the outer cylindrical surface of the tube which constitutes a seat for the flange.
  • the end of the tube is upset and upturned against the flange to firmly secure it to said tube.
  • the axial elasticity of the flange is considerably increased, whereby, when the tube end is upturned against the flange in order to secure it to said tube, the elastic ring previously seated in said groove is squeezed and thus exerts a given elastic pressure which is transmitted in all direc tions against the groove wall and particularly in the required axially inwards directed sense.
  • the inside wall of the groove will be pro-stressed in an inwards direction of the bobbin, whereby the flange is forced to elastically engage the tube seat at a given elastic stress, which will preferably always be greater than the outwardly directed stress exerted on the yarn while it is being wound under strong tension on the bobbin. This will prevent the flange from being displaced out of its seat and off the bobbin, as well as the formation of spaces or fissures in which yarn can be engaged.
  • the means for producing the inwardiy directed elastic stress advantageously consists of only one or more ofthe above: annular grooves without the insertion of an elastic ring.
  • Such grooves increase the axial elasticity of the flange, which as a consequence of the upsetting and upturning of the end of the bobbin tube, will generate the required elastic pre-stress.
  • such means may comprise a spring member which elastically engages each flange and applies an inward elastic pre-stress, which tends to elastically maintain the initial position of the flange on the tube seat.
  • Said spring member may be a spiral spring, a cup-shaped spring, a flat spring, or the like, which may be adjustable to vary the magnitude of pro-stress exerted on the flanges.
  • the tube seat is defined as an annular recess in the outer surface of the tube, with an outwardly inclined inner face.
  • Such inclined face cooperates with a mating portion of the flange wall in such a manner that contact between said two walls will always be established at the outer cylindrical surface of the tube for all magnitudes of stress to which the flange is subjected.
  • FIGURE 1 is a side view, partly in section, of a bobbin wherein the flanges thereof are secured to the tube according to a first embodiment of the invention
  • FIGURE 2 is an enlarged view of a detail of one end of the bobbin of FIG. 1;
  • FIGURE 3 is an enlarged axial section of the end of a bobbin, showing a second embodiment of the invention
  • FIGURE 4 is an enlarged view, partly in section, of the end of a bobbin, showing a third embodiment of the invention
  • FIGURE 5 shows partly in axial section, a plastic plug and integral sleeve which is adapted for insertion into an end of the bobbin tube;
  • FIGURE 6 is a cross-section of the plug and a bush as taken along line VIVI of FIG. 5.
  • a bobbin assembly A which is particularly adapted to accommodate yarn spun from man-made fibers, and which, as already well known, consists of a metal tube B having side flanges C slipped over both ends of the tube. The flanges C are secured on the tube B in a manner which will be described in more detail later on.
  • Such basic structure of the bobin is completed by a pair of plastic plugs 10, forced into the bore 12 of the bobbin tube, with a plastic tube insert 14 clamped between both plugs and two bushes 16 in the plugs 10.
  • Such bushes preferably are constituted of bakelized fabric.
  • the yarn (not shown) is wound on the cylindrical surface 18 of the tube B, which therefore must be joined, without interruption, with the inner annular sides 20 of flanges C, against which the yarn comes to rest.
  • the wound diameter of the yarn is usually equal to diameter d of the flanges C.
  • a double system of forces is produced, of which one, acting in the direction of the arrows X, is not detrimental to the structural integrity of the bobbin assembly, since it is resisted by the tube itself.
  • the other force system acts in the direction of arrows Y and will be hereinafter referred to as lateral stresses.
  • means adapted to exert elastic action to produce elastic stresses designed to resist and overcome the lateral stresses acting in the direction of arrows Y comprises a groove F cut in the inner periphery of each flange C, and an elatic ring M seated in the groove F, be-- fore the flange is forced over the tube.
  • Each flange is, formed with a bore by which it can he slipped over the corresponding end D of tube B, and is locked therein by the engagement of said flange C into the seat H that is formed on the end D, as well as by the upsetting and up turning of end portion 26 of the metal tube against the corresponding flange.
  • the upturned portion 26 in cooperation with the conical section 28 of the flange, will result in the production of compression stress exerted on the flanges and bobbin in the direction of the arrow Z, and thus in a firm securing of flange C in seat H.
  • FIG. 1 While in FIG. 1 the groove F is shown wholly filled A. by the ring M, in FIG. 2 the same groove appears to be only partly filled by said ring. This is the case because FIG. 2 represents an intermediate stage of installation, the metal edge 26 being not yet fully upturned and pressed against the cone portion 28 of the flange, as in FIG. 1.
  • the ring M becomes wholly enclosed within the bobbin, i.e., in the groove F thereof, and thus is enclosed and protected against any external action which would tend to cause premature wear thereof.
  • the ring M in the groove F exerts an elastic action on the flange C, whereby a system of elastic stresses is produced within the flange.
  • the stresses of the latter system are designed to act in opposition to the lateral forces which act on the flanges in the direction of arrows Y.
  • the side walls of groove F by which the axial resilience of said flange is materially increased, are drawn nearer by a given amount, depending on the force exerted by said edge 26, whereby the material of elastic ring M is deformed in both radial and axial directions, thus filling the entire space of the thus deformed groove F.
  • the ring M will exert an elastic force on the flange C and in particular on the walls 11, 13 of such flange, since said elastic ring tends to resume its initial shape and because the elastic limit of both the flange and the ring M is never exceeded when the metal edge 26 is upturned.
  • a force is exerted by the ring on both walls 11, 13, whereby a force is exerted in an axial or lateral direction opposite to Z on the wall 11 and in the direction of Z on wall 13. It is the latter force that is effective for the purpose of always maintaining continuity between the outer surface 18 of the tube and the side surfaces 20 of the flanges.
  • the abovestated elastic action is permanently exerted, due both to the tendency of ring M to resume its initial shape and also of groove F to return to its initial form.
  • Such elastic action constitutes a pre-stress having the function of counteracting the lateral stress produced by the winding of yarn acting in the direction of arrows Y.
  • Such prestress must always exceed, at least by a small amount, the stresses that are to be resisted, whereby the wall 20 is permanently kept in contact with the surface 15 of seat H, thus preventing the existence of objectionable spaces between the flanges and the tube, and thereby eliminating the possibility that the yarn can be caught therein.
  • the wall 15 of the seat H that is formed on the tube D is conveniently inclined outwardly, thus having a cone shape.
  • the wall 17 of flange C is adjacent wall 15 and is inclined with respect thereto.
  • wall 17 may be inclined or may be perpendicular to the tube B.
  • the recess in the tube defining the seat H is bounded by the above wall 15, and the walls 15, 17 come into contact with each other after the edge 26 has been upturned against the flange C.
  • the inclination of said walls 15, 17 is a further contribution to a positive prevention of the existence of spaces at surfaces 22, 24.
  • grooves F ' without the elastic rings M, as a means to exert the elastic action by which the required pre-stressing of flanges C is produced.
  • said grooves are left empty.
  • the local resilience of the flange C is increased by the pressure of such grooves, whereby an elastic action is exerted for counteracting the stress Y exerted by the yarn.
  • FIG. 3 A further embodiment is shown in FIG. 3 for bobbin A.
  • the flange C which is engaged as usual by its section G in the seat H of the bobbin tube, is elastically acted upon by a cup-shaped spring N that it slipped over the end D of tube B.
  • the edge 26 of said end D of tube B is upset and upturned against the spring N, in order to produce the required elastic action in the direction of the arrow Z, and by which the flange C is elastically pre-stressed, thereby to counteract and to overcome the above-stated lateral stresses Y exerted by the yarn.
  • the means by which the flange C is connected with the tube B comprises a spiral spring P that is slipped over a pin 21 which is secured to tube B and which projects beyond the flange C.
  • the elastic load that is exerted in the direction of the arrow Z on flange C can be properly adjusted by means of a nut 23, that is screwed on a threaded end of said pin 21 and by which the spring P can be more or less compressed by the washer 25.
  • the compression of the spring constitutes an elastic load that counteracts and overcomes the stress exerted by the yarn winding, which tends to drive the flange off the tube.
  • the magnitude of the elastic pre-stress that is directly or indirectly applied to the flange C can be adjusted when assembling the bobbin.
  • the limit value of pre-stressing to be imparted to flanges C in the case of the embodiment in FIGS. 1 and 2 is defined by the increase in the resistance that is opposed by the elastic ring M while being gradually deformed in its groove F as a consequence of upsetting and upturning the edge 26 of tube B.
  • the ring M acts also as an indicator of the magnitude of pro-stressing that is imparted to the flange, whereby the magnitude can therefore be visually adjusted according to requirements.
  • the elastic force exerted by the spring N can be adjusted according to requirements by adjusting the degree of upsetting and upturning of the edge 26.
  • the elastic action can also be adjusted by varying the degree of threaded engagement of the nut 23 on its threaded pin.
  • FIGS. 5 and 6 there is shown a plastic plug which is secured with a related bush 16 for being inserted into the metal tube B by forcing them as an assembly through the inwardly projecting rims at the seats H in the tube ends C.
  • said plug is required to be highly resilient to allow it to be forced through said rims, the diameter of which is smaller than the plug diameter 27.
  • a plurality of ribs 29 are advantageously provided in the plug.
  • Such ribs extend in an intervening space 31, between an inner cylindrical hub 33 that is locked on the related cylindrical surface of bush 16 and an outer cylindrical wall 35 that is adapted to be inserted into the metal tube B. All the ribs 29 extend tangentially from hub 33, which is an important feature of the invention, since said arrangement results in a material increase in the radial resilience of plug 10.
  • a bobbin comprising a tube having an end, a flange constituted of resilient material mounted on and encircling the tube at said end, said tube and flange having abutting surfaces and forming a substantially continuous uninterrupted surface for the accommodation of yarn to be wound on the bobbin, said tube having an annular recess of given radial dimension defining a seat for said flange, the abutting surface of the tube being a bounding surface of the recess, said tube including an upturned end portion at the remote end of said tube applied against the flange to urge the same in a direction away from the end of the tube to cause said abutting surfaces to be forced into contact with one another, said flange having an inner peripheral surface in facing relation with the tube in said seat, said flange having an annular groove opening into said inner peripheral surface, said groove having a depth greater than the radial extent of the recess and providing axial elasticity for said flange for the development of elastic pre-stress between the abutting surfaces with the up
  • a bobbin as claimed in claim 1 further comprising an elastic ring accommodated in the groove of the flange.
  • a bobbin comprising a tube having an end, a flange constituted of resilient material encircling the tube at said end, said tube having an annular recess of determinable radial extent constituting a seat in which is accommodated said flange, said flange having an inner peripheral surface facing said seat, said flange having opposite surfaces, said recess being bounded by a surface remote from the end of the tube, which surface is in contact with the surface of the flange which faces away from said end of the tube, said flange being provided with an annular groove which opens into the inner peripheral surface of the flange, said groove having a depth greater than the radial extent of the recess and providing axial elasticity for the flange at the level of said groove, said tube including an upturned portion.
  • a bobbin as claimed in claim 3 com-prising an elastic ring in said groove also being subjected to elastic deformation by the application of force to the flange by the upturned portion of the tube.
  • a bobbin comprising a tube having an end and an internal bore of determinable diameter, a flange coupled to said tube at said end and having a surface in contact with a surface of the tube to form a joint thereat, means elastically acting on the flange to develop an elastic prestress therein which urges the surfaces of the tube and the flange at said joint into tight engagement to provide a substantially continuous surface at said joint and prevent opening thereof, an insert in said tube at said end closing the same, said insert comprising an assembly of an elastic outer plug and inner bush inserted in said plug, said outer plug comprising an outer cylindrical wall, an inner cylindrical hub coaxially within the wall in spaced relation, and a plurality of ribs extending between the hub and the wall, said ribs extending tangentially from the hub to the wall and providing substantial radial elasticity between the wall and the hub.
  • a bobbin as claimed in claim 8 wherein said outer cylindrical wall of the plug has a groove conforming to the shape of the seat for accommodating the same, said wall in a region outside of said groove having an outer diameter exceeding the inner diameter of the tube at said seat.
  • a bobbin as claimed in claim 8 wherein said tube has an end opposite the first said end and a second flange identical to the first coupled to the tube at the second end, there being provided a second insert in said tube at said second end, the bobbin further comprising an insert tube member supported Within the tube and positioned between the inserts at the opposite ends.

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  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
US460698A 1964-07-06 1965-06-02 Bobbin construction Expired - Lifetime US3315916A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1467564 1964-07-06

Publications (1)

Publication Number Publication Date
US3315916A true US3315916A (en) 1967-04-25

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US460698A Expired - Lifetime US3315916A (en) 1964-07-06 1965-06-02 Bobbin construction

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US (1) US3315916A (it)
BE (1) BE663249A (it)
CH (1) CH420942A (it)
DE (1) DE1660516A1 (it)
ES (1) ES314468A1 (it)
FR (1) FR1440936A (it)
GB (1) GB1066396A (it)
NL (1) NL6506296A (it)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU192312U1 (ru) * 2019-05-30 2019-09-12 Общество с ограниченной ответственностью "АНКОР" Алюминиевая двухслойная бобина

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD284366A7 (de) * 1989-03-13 1990-11-14 Thaelmann Schwermaschbau Veb Maschinenspule

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US634738A (en) * 1899-05-18 1899-10-10 Thomas Sampson Yarn spool or bobbin.
US1150011A (en) * 1912-02-06 1915-08-17 William Barker Spool-head fastener.
US1395038A (en) * 1921-03-24 1921-10-25 Clinton Harry Davis Textile spool or bobbin
FR558613A (fr) * 1922-10-24 1923-08-30 Baumann Freres Dispositif de fixation amovible des disques de bobines pour tous usages
US1862694A (en) * 1928-12-21 1932-06-14 Mcconnel Frederic Whigham Bobbin
US3013378A (en) * 1958-03-07 1961-12-19 Deering Milliken Res Corp Method for handling yarn
US3081960A (en) * 1960-08-24 1963-03-19 Eastman Kodak Co Adjustable film spool

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US634738A (en) * 1899-05-18 1899-10-10 Thomas Sampson Yarn spool or bobbin.
US1150011A (en) * 1912-02-06 1915-08-17 William Barker Spool-head fastener.
US1395038A (en) * 1921-03-24 1921-10-25 Clinton Harry Davis Textile spool or bobbin
FR558613A (fr) * 1922-10-24 1923-08-30 Baumann Freres Dispositif de fixation amovible des disques de bobines pour tous usages
US1862694A (en) * 1928-12-21 1932-06-14 Mcconnel Frederic Whigham Bobbin
US3013378A (en) * 1958-03-07 1961-12-19 Deering Milliken Res Corp Method for handling yarn
US3081960A (en) * 1960-08-24 1963-03-19 Eastman Kodak Co Adjustable film spool

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU192312U1 (ru) * 2019-05-30 2019-09-12 Общество с ограниченной ответственностью "АНКОР" Алюминиевая двухслойная бобина

Also Published As

Publication number Publication date
NL6506296A (it) 1966-01-07
FR1440936A (fr) 1966-06-03
CH420942A (it) 1966-09-15
ES314468A1 (es) 1966-04-16
DE1660516A1 (de) 1972-01-13
BE663249A (it) 1965-11-03
GB1066396A (en) 1967-04-26

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