US2582639A - Arrangement for adapting the speed of take-up to the speed of feed in producing thread or tape material with originally low mechanical strength - Google Patents

Arrangement for adapting the speed of take-up to the speed of feed in producing thread or tape material with originally low mechanical strength Download PDF

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US2582639A
US2582639A US117214A US11721449A US2582639A US 2582639 A US2582639 A US 2582639A US 117214 A US117214 A US 117214A US 11721449 A US11721449 A US 11721449A US 2582639 A US2582639 A US 2582639A
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speed
thread
mechanical strength
take
arrangement
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US117214A
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Ture A Ljungberg
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ABB Norden Holding AB
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ASEA AB
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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
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
    • B65H59/16—Braked elements rotated by material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/355—Conveyors for extruded articles
    • 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 an arrangement for adapting the speed of take-up to the speed of feed, especially useful for the production of thread or tape material with low original mechanical strength.
  • the object of this arrangement is that the thread or tape material is deviated from its natural straight path on a point, where its strength has already been increased by means of revolving wheels or rolls over and/or between which the material is pulled, the axes of such wheels or rolls being so arranged as to enable a lateral motion of the wheels or rolls.
  • An increase of mechanical tension in the thread or tape material will cause the lateral motion 01' the above mentioned wheels or rolls, and a brak ing device influenced by this motion affects the rate of take-up so as to always adapt this rate to the rate of delivery of the machinery.
  • FIGS 3 and 4 show the same for another embodiment.
  • Figures 5 and 6 show embodiments suitable for tape material and for less flexible thread material.
  • an extrusion machine e. g. the outlet of a lead press is denoted I.
  • the extruded material or the thread 2 Via the inlet 3 it is led into a groove in a brake-shoe 5 having the shape of a bow and pivoted on a bearing at the point 4.
  • the thread From the brake-shoe '5 the thread is laid around the wheel *6, laterally movable with respect to the brake-shoe 5. If there is a pulling stress in the thread at the outlet 1 where the thread is taken up on a reel not shown in the drawing,
  • the friction of the brake-shoe 5 increases so as to cause a braking power upon the wheel *6 resulting even in a friction between the thread 2 and wheel 6 and the remaining pulling power in the thread 2 at the outlet of the extrusion machine is very low with respect to the power at the outlet of the braking device.
  • the braking power can be increased to any desired value.
  • the braking effect between the brake-shoe 5 and the wheel 6 will in this case be maintained by a separate brake drum '8 fastened to the centre of the wheel 6, the brake drum being afiected by a brake-shoe ll in conjunction with the bow 5.
  • the wheel 6 can be substituted by one or several rolls for wider tapes or by one or several wheels, in order that the tam will not have to be bent at such large angles.
  • An increase of the braking efiect of the braking drums can be obtained by means of levers or some other arrangements if the desired friction has got to exceed the one normally obtained between the thread or tape material and the wheels or rolls.
  • An auxiliary device for a machine manufacturing a thread or tape by extruding a mate-" strength increases rapidly therefrom, comprising an extrusion mouth-piece, a roll for receiving the extruded material, a braking clutch for said roll, and means whereby tension in the extruded material causes the clutch to engage said roll, the said receiving roll and the extrusion mouth-piece being spaced from each other to the extent necessary to permit the intervening extruded material to attain sufficient mechanical strength to withstand the pull when it reaches the roll.
  • An auxiliary device for a machine manufacturing a thread or tape by extruding a material having a low tensile strength when the material leaves the extrusion means and which strength increases rapidly therefrom comprising an extrusion mouth-piece, a pivoted roll to receive the extruded material, a brake-shoe for said roll, and means whereby said brake-shoe is engaged by said material and is actuated thereby before such material engages said roll, the said receiving roll and the extrusion mouth-piece being spaced from each other to the extent nec- 4 essary to permit the intervening extruded material to attain sufllcient mechanical strength to Withstand thepull when it reaches the roll.
  • An auxiliary device for a machine manufacturing a thread or tape by extruding a material having a low tensile strength when it leaves the extrusion mouth-piece and in which the said strength increases rapidly therefrom comprising a pivoted roll receiving the extruded material, a brake-shoe movable in relation to said roll, and .means whereby the extruded material is conducted from the mouth-piece and is caused 7 REFERENCES CITED
  • Thefollowing references are of record in the file of this patent: Y

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Description

Jan. 15, 1952 LJUNGBERG 2,582,639
ARRANGEMENT FOR ADAPTING THE SPEED OF TAKE- THE SPEED OF FEED IN PRODUCING THREAD OR TAPE MA WITH ORIGIN ALLY LOW MECHANICAL STRENGTH Filed Sept. 22, 1949 /3 K W w Patented Jan. 15, 1952 Ann entrnnir 'i oa ADAPT'ING THE! SPEED "OE-TAKEFUP 'T0'- T HE sFnEnjor )FEED' IN PRODUCING'YTHRE'AD OR' TAPE MATERIA'L wrrnq ORIGINALLY? Low: MECHA ICAL-1:
In producing some thread or tape material the mechanical strength when leav ng" 'tlie' machine is still so low that a pulling, for instanceror rouing up on1drJ'un'1's-. or: cylinders;;.will;- affect the shape, First after having been oooled to a lower temperature dried, or has" b ngiven .i g other manner'amncreaseu.zfiechan cai str gth, a; m ciianial'fstrsssuouiu f a glowed. But. I g I now greatcareoii'ght"to'beta take-up is continuously increasing with the diameter of the roll which is being built up, while the rate of delivery from the machine remains constant.
This invention relates to an arrangement for adapting the speed of take-up to the speed of feed, especially useful for the production of thread or tape material with low original mechanical strength. The object of this arrangement is that the thread or tape material is deviated from its natural straight path on a point, where its strength has already been increased by means of revolving wheels or rolls over and/or between which the material is pulled, the axes of such wheels or rolls being so arranged as to enable a lateral motion of the wheels or rolls. An increase of mechanical tension in the thread or tape material will cause the lateral motion 01' the above mentioned wheels or rolls, and a brak ing device influenced by this motion affects the rate of take-up so as to always adapt this rate to the rate of delivery of the machinery.
Arrangements according to the invention are illustrated in the accompanying drawing, where- Figures 1 and 2 show two projections of an embodiment suitable for thread material with good flexibility.
Figures 3 and 4 show the same for another embodiment.
Figures 5 and 6 show embodiments suitable for tape material and for less flexible thread material.
Referring to Figures 1 and 2 an extrusion machine e. g. the outlet of a lead press is denoted I. From here comes the extruded material or the thread 2. Via the inlet 3 it is led into a groove in a brake-shoe 5 having the shape of a bow and pivoted on a bearing at the point 4. From the brake-shoe '5 the thread is laid around the wheel *6, laterally movable with respect to the brake-shoe 5. If there is a pulling stress in the thread at the outlet 1 where the thread is taken up on a reel not shown in the drawing,
I the wheel 6 and the brake-shoe 5 will approach -'s v;e nskas, Elektris ka Aktiebolageti swedish corporation p22, 1949, serial No. 117,214
September. 28, 134 8.
' e of the braking'power depends upon the "pulling power then 1 having to 'overfliai e l ad I 2 f is extruded-Q too rapidly 7 from ower use tdth brake-shea 5 will a pear, whereas a pulling at the outlet 1 and a small braking power at the inlet 3 will cause a great braking power resulting from an approach of the wheel 6 to the brake-shoe 5.
At a certain magnitude of pulling power the friction of the brake-shoe 5 increases so as to cause a braking power upon the wheel *6 resulting even in a friction between the thread 2 and wheel 6 and the remaining pulling power in the thread 2 at the outlet of the extrusion machine is very low with respect to the power at the outlet of the braking device.
By means of letting the thread '2 make several turns around the wheel 6 the braking power can be increased to any desired value. This is shown in the Figures 3 and 4 having the same indices for the parts corresponding to those of the Figures 1 and 2. The braking effect between the brake-shoe 5 and the wheel 6 will in this case be maintained by a separate brake drum '8 fastened to the centre of the wheel 6, the brake drum being afiected by a brake-shoe ll in conjunction with the bow 5. The wheel 6 can be substituted by one or several rolls for wider tapes or by one or several wheels, in order that the tam will not have to be bent at such large angles.
Such an arrangement is shown in Figure 5, where the tape 2 from the extrusion machine I is led over the roll In between the rolls I I, so that the tape is deviated from its straight path. A pulling power at the outlet l2 will press the rolls I0, I I against their braking devices l3, the effect of braking and friction between tape and rolls being produced as previously described.
By means of several wheels or rolls the effect can be increased to any desired extent.
There are different means available to increase the coefficient of friction of the surfaces of the Wheels or rolls, and in some cases even a sharptoothed surface will be allowed.
An increase of the braking efiect of the braking drums can be obtained by means of levers or some other arrangements if the desired friction has got to exceed the one normally obtained between the thread or tape material and the wheels or rolls.
ii d i @5 1 a a maximum 1 1 l pwer is; obtained when the wheel is fr tionfoif,thet igadagain'stthe whole mae iiiefil no noteworthy braking 1 I claim as my invention: 1. An auxiliary device for a machine manufacturing a thread or tape by extruding a mate-" strength increases rapidly therefrom, comprising an extrusion mouth-piece, a roll for receiving the extruded material, a braking clutch for said roll, and means whereby tension in the extruded material causes the clutch to engage said roll, the said receiving roll and the extrusion mouth-piece being spaced from each other to the extent necessary to permit the intervening extruded material to attain sufficient mechanical strength to withstand the pull when it reaches the roll. 1
' 2. An auxiliary device for a machine manufacturing a thread or tape by extruding a material having a low tensile strength when the material leaves the extrusion means and which strength increases rapidly therefrom, comprising an extrusion mouth-piece, a pivoted roll to receive the extruded material, a brake-shoe for said roll, and means whereby said brake-shoe is engaged by said material and is actuated thereby before such material engages said roll, the said receiving roll and the extrusion mouth-piece being spaced from each other to the extent nec- 4 essary to permit the intervening extruded material to attain sufllcient mechanical strength to Withstand thepull when it reaches the roll.
3. An auxiliary device for a machine manufacturing a thread or tape by extruding a material having a low tensile strength when it leaves the extrusion mouth-piece and in which the said strength increases rapidly therefrom, comprising a pivoted roll receiving the extruded material, a brake-shoe movable in relation to said roll, and .means whereby the extruded material is conducted from the mouth-piece and is caused 7 REFERENCES CITED Thefollowing references are of record in the file of this patent: Y
UNITED STATES PATENTS Number Name Date 1,388,342 Hopkins Aug. 23,1921 1,836,613 Oehmichen Dec. 15, 1931 Moncriefi et a1 May '31, 1933
US117214A 1948-09-28 1949-09-22 Arrangement for adapting the speed of take-up to the speed of feed in producing thread or tape material with originally low mechanical strength Expired - Lifetime US2582639A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2767429A (en) * 1952-05-06 1956-10-23 Du Pont Snubbing pin for drawing yarn
US2894802A (en) * 1955-11-16 1959-07-14 American Viscose Corp Method of forming crimped artificial filaments
US3677481A (en) * 1970-06-09 1972-07-18 Monsanto Co Method and apparatus for taking up fiber
US4998942A (en) * 1989-12-27 1991-03-12 Milliken Research Corporation Snubber profile
US5492465A (en) * 1988-09-14 1996-02-20 Matsuzawa Co., Ltd. Device for forming blisters

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1388342A (en) * 1913-01-02 1921-08-23 Publisher S Utilities Co Tension device
US1836613A (en) * 1927-10-03 1931-12-15 Oehmichen Etienne Cinematographic apparatus
US2118856A (en) * 1935-11-07 1938-05-31 Celanese Corp Manufacture or treatment of artificial filaments, threads, yarns, and like materials

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1388342A (en) * 1913-01-02 1921-08-23 Publisher S Utilities Co Tension device
US1836613A (en) * 1927-10-03 1931-12-15 Oehmichen Etienne Cinematographic apparatus
US2118856A (en) * 1935-11-07 1938-05-31 Celanese Corp Manufacture or treatment of artificial filaments, threads, yarns, and like materials

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2767429A (en) * 1952-05-06 1956-10-23 Du Pont Snubbing pin for drawing yarn
US2894802A (en) * 1955-11-16 1959-07-14 American Viscose Corp Method of forming crimped artificial filaments
US3677481A (en) * 1970-06-09 1972-07-18 Monsanto Co Method and apparatus for taking up fiber
US5492465A (en) * 1988-09-14 1996-02-20 Matsuzawa Co., Ltd. Device for forming blisters
US4998942A (en) * 1989-12-27 1991-03-12 Milliken Research Corporation Snubber profile

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