US3908929A - Method and apparatus for regulating the tension of a moving threadlike element - Google Patents

Method and apparatus for regulating the tension of a moving threadlike element Download PDF

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Publication number
US3908929A
US3908929A US475149A US47514974A US3908929A US 3908929 A US3908929 A US 3908929A US 475149 A US475149 A US 475149A US 47514974 A US47514974 A US 47514974A US 3908929 A US3908929 A US 3908929A
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US
United States
Prior art keywords
fluid
arrangement
baffle
tension
stream
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
US475149A
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English (en)
Inventor
Vilem Stritzko
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.)
Bleiche AG
Original Assignee
Bleiche AG
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 Bleiche AG filed Critical Bleiche AG
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Publication of US3908929A publication Critical patent/US3908929A/en
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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D15/00—Control of mechanical force or stress; Control of mechanical pressure
    • 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
    • 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
    • B65H59/20—Co-operating surfaces mounted for relative movement
    • B65H59/22—Co-operating surfaces mounted for relative movement and arranged to apply pressure to material
    • B65H59/24—Surfaces movable automatically to compensate for variation in tension
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
    • G01L5/08—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands using fluid means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B65H2553/10—Sensing or detecting means using fluids, e.g. pneumatics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2555/00—Actuating means
    • B65H2555/10—Actuating means linear
    • B65H2555/11—Actuating means linear pneumatic, e.g. inflatable 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
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • a thread-like element is advanced over one side of June 6, 1973 Switzerland 8168/73 n in ct with a member which can yield in direction towards this one side.
  • a stream of gaseous [52] U.S. Cl. 242/150 pr r fluid is irected against an Opposite side of 1511 Int. Cl. Bh 59/24 h member in direction towards h one side, and he [58] Field of Search 242/150, 147 R, 147 A, kpreSSu e 0f the fluid which develops at the one 242/149, 45, 75,2, 753, 153, 154 155, 156, side is measured.
  • the present invention relates generally to a method and an apparatus for regulating the tension of a moving thread-like element, such as a filament, yarn or the like. It is particularly suitable in conjunction with textile machines.
  • a moving thread-like element such as a filament, thread, a yarn, or the like, which may for instance be being wound onto a bobbin, be at all times maintained at a certain specific tension.
  • the tension of the element be constantly measured and that a retarding force be exerted upon the element if the tension drops below the preselected level, or that a retarding force being exerted should be decreased if the tension rises above a predetermined level.
  • Devices for this purpose are already known.
  • one feature of the invention resides in a method of regulating the tension of a moving thread-like element, which, briefly stated, comprises the steps of advancing a thread-like element over one side of and in contact with a member which can yield in the direction towards this one side.
  • a stream of gaseous pressure fluid is directed against an opposite side of the member in direction towards the one side, and the backpressure of the fluid is measured which develops at the aforementioned other side.
  • a retarding force is exerted upon the thread-like element which is a function of and varies in dependence upon, the measured backpressure.
  • FIG. 1 is a partly sectioned view illustrating a first embodiment of the invention
  • FIG. 2 is a horizontal section of FIG. 1;
  • FIG. 3 is a fragmentary sectional view, illustrating a detail of FIG. 1;
  • FIG. 4 is a further fragmentary sectional view illustrating a detail of FIG. 3 and being taken on line IVIV thereof;
  • FIG. 5 is a view analogous to a portion of FIG. 1, but illustrating a further embodiment of the invention.
  • FIGS. 1 4 illustrate one embodiment of the invention, wherein a thread-like element 1 such as a filament, thread, yarn or the like, travels through a device 2 which measures its tension, and through a brake 3 which can retard the movement of the element 1 to a greater or lesser extent.
  • a thread-like element 1 such as a filament, thread, yarn or the like
  • FIGS. 1 and 2 show particularly clearly that the device 2 is provided with a mounting plate 4 on which there is mounted a nozzle 5 which is connected via a conduit 7 with a (non-illustrated) source of compressed gaseous fluid, for instance compressed air.
  • a cover plate 6 is mounted on the nozzle 5.
  • the plate 4 carries a pair of abutments 8 which are arranged symmetrically with reference to the longitudinal axis of the nozzle 5 and which are contacted by the element 1.
  • a pin or pivot 9 is also mounted on the plate 4, and turnably carries a hub 10 on which there is secured (or which is a front part with) a baffle ll shaped as a segment of a circle having air passage openings 12.
  • the baffle 11 therefore can turn about the axis of the shaft 9; it is located between the outlet opening of the nozzle 5 and the advancing element 1 and extends into the stream of compressed fluid discharged by the nozzle 5.
  • the pressure exerted by the stream of fluid against the baffle 1 1 causes the same to be deflected about the axis of the pivot or shaft 9 and to be pressed against the element 1 which is thus deflected between the abutments 8.
  • the fluid which passes through the opening or openings 12 acts directly upon the element 1 and tends to reduce the friction of the same with the side of the baffle 11 that faces away from the nozzle 5.
  • the latter includes a bore 14 formed in the plate 4, a conduit 15, and a pneumatic amplifier 16.
  • the bore communicates with the space through which the fluid stream passes intermediate the outlet of the nozzle 5 and the baffle 11 so that the backpressure is transmitted through the bore 14 and the conduit 15 to the amplifier 16, wherein it is used for controlling the operation of the brake 3.
  • FIG. 2 shows more clearly that the amplifier I6 is provided with a housing 17 having a cover 18, and that an annular member 19 is located between them.
  • annular member 19 engages the circumferential marginal portion of an elastic diaphragm which serves to subdivide the interior of the housing 17 into pressure chamber 21 and a vented chamber 22 communicating with the atmosphere.
  • a pin 23 is mounted in the housing 17, axially shiftable with reference to the diaphragm l2 and extending into a diametral opening 24 in a projection 25 mounted on the housing 17.
  • a bracket which is connected with the pin 23 is identified with reference numeral 26 and is mounted in the opening 24 for shiftable displacement.
  • the free end of the projection 25 is formed with a tapped bore 27 into which a screw 28 can be threaded.
  • a helical spring 29 is mounted between the bracket 26 and the screw 28 and can be tensioned or relaxed by appropriate turning of the screw 28.
  • a pair of brake plates 30 and 31 are freely turnably mounted on the projection 25, and the moving of thread-like element 1 passes between them.
  • the bracket 26 presses the plate 31 against the plate 30 and the latter against the housing 17 so that the two plates 30 and 31 together act to exert a retarding force upon the element 1.
  • FIGS. 3 and 4 show that the baffle 11 is formed on its side facing toward the nozzle 5 with a relatively sharp edge S, whereas the side facing away from the nozzle 5 is formed with a groove F through which the element 1 extends and wherein the element 1 is stabilized against lateral displacement.
  • the moving element 1 causes the baffle 11 to tilt about the pivot 9 towards the nozzle 5.
  • FIG. 5 is largely the same as that of FIGS. 1 4. Only that portion has been illustrated which differs from the corresponding portion of FIG. 1, and like reference numerals have been used to identify like components. Those portion of FIG. 1 4 which have not been shown in FIG. 5 should be understood to be present in the latter Figure also.
  • FIG. 5 differs from FIGS. 1 4 in that the baffle 11 is replaced by an essentially wing-shaped member 11 which is not provided with the openings 12 but is otherwise mounted in the same manner as the baffle 11 and functions in the same way.
  • a method of regulating the tension of a moving thread-like element comprising the steps of advancing a thread-like element over one side of and in contact with a member which can yield in direction towards said one side; directing a stream of gaseous pressure fluid against the opposite side of said member in direction towards said one side; measuring the backpressure of said fluid which develops at said opposite side; and exerting a retarding force on said element which is a function of and varies in dependence upon, the measured backpressure.
  • An arrangement for regulating the tension of a moving thread-like element comprising wall means defining a restricted space for passage of a moving threadlike element; nozzle means for blowing a stream of pressurized gaseous fluid into said space transversely of the path of movement of said element; a yieldable member mounted in said space intermediate said nozzle means and said path, said member contacting said element and being deflectable against the tension of the same by said stream of fluid; measuring means for measuring the backpressure resulting intermediate said member and said nozzle means from backing-up of said fluid; and braking means controlled by said measuring means and operative for braking said element with a force which is a function of and varies with the measured backpressure.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Advancing Webs (AREA)
US475149A 1973-06-06 1974-05-31 Method and apparatus for regulating the tension of a moving threadlike element Expired - Lifetime US3908929A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH816873A CH559143A5 (ja) 1973-06-06 1973-06-06

Publications (1)

Publication Number Publication Date
US3908929A true US3908929A (en) 1975-09-30

Family

ID=4336206

Family Applications (1)

Application Number Title Priority Date Filing Date
US475149A Expired - Lifetime US3908929A (en) 1973-06-06 1974-05-31 Method and apparatus for regulating the tension of a moving threadlike element

Country Status (10)

Country Link
US (1) US3908929A (ja)
JP (1) JPS5020053A (ja)
BE (1) BE813304A (ja)
CH (1) CH559143A5 (ja)
CS (1) CS178820B2 (ja)
DE (1) DE2416075A1 (ja)
ES (1) ES426009A1 (ja)
FR (1) FR2232503B1 (ja)
GB (1) GB1432507A (ja)
IT (1) IT1013797B (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4726308A (en) * 1985-10-18 1988-02-23 Tokyo Juki Industrial Co., Ltd. Thread tension control device for overedge sewing machines
CN115520700A (zh) * 2022-10-25 2022-12-27 浙江御辰东智能科技有限公司 一种多轴多传感器融合的张力稳定方法及装置

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2758335C2 (de) * 1977-12-27 1986-04-17 W. Schlafhorst & Co, 4050 Mönchengladbach Fadenbremse
EP0158199A1 (de) * 1984-04-07 1985-10-16 b a r m a g Barmer Maschinenfabrik Aktiengesellschaft Fadenfühler
CH663401A5 (de) * 1984-05-03 1987-12-15 Benninger Ag Maschf Fadenspannvorrichtung an einem spulengatter.
GB8616728D0 (en) * 1986-07-09 1986-08-13 Wool Dev Int Carding process
IT1198216B (it) * 1986-12-01 1988-12-21 Savio Spa Dispositivo tensionatore di fili a piattelli rotanti

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2610813A (en) * 1946-03-12 1952-09-16 Raymond Engineering Lab Inc Apparatus for regulating yarn tension
US2745610A (en) * 1953-05-08 1956-05-15 Reyes Juan Vila Thread tension regulating means for reeling machines and the like
US2888216A (en) * 1956-01-30 1959-05-26 Tube Masters Inc Tensioning device
US2912185A (en) * 1957-04-11 1959-11-10 Stop Motion Devices Corp Adjustable tension regulator for yarn
US3146969A (en) * 1962-05-10 1964-09-01 Elbert B Lindsey Thread tensioning device
US3314619A (en) * 1962-07-23 1967-04-18 Sylvania Electric Prod Tension distributing winding device
US3533574A (en) * 1967-04-21 1970-10-13 English Electric Co Ltd Tensioning device
US3565027A (en) * 1965-02-15 1971-02-23 Reece Corp Tension and releasing means for sewing machines

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1586649A (ja) * 1968-03-27 1970-02-27

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2610813A (en) * 1946-03-12 1952-09-16 Raymond Engineering Lab Inc Apparatus for regulating yarn tension
US2745610A (en) * 1953-05-08 1956-05-15 Reyes Juan Vila Thread tension regulating means for reeling machines and the like
US2888216A (en) * 1956-01-30 1959-05-26 Tube Masters Inc Tensioning device
US2912185A (en) * 1957-04-11 1959-11-10 Stop Motion Devices Corp Adjustable tension regulator for yarn
US3146969A (en) * 1962-05-10 1964-09-01 Elbert B Lindsey Thread tensioning device
US3314619A (en) * 1962-07-23 1967-04-18 Sylvania Electric Prod Tension distributing winding device
US3565027A (en) * 1965-02-15 1971-02-23 Reece Corp Tension and releasing means for sewing machines
US3533574A (en) * 1967-04-21 1970-10-13 English Electric Co Ltd Tensioning device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4726308A (en) * 1985-10-18 1988-02-23 Tokyo Juki Industrial Co., Ltd. Thread tension control device for overedge sewing machines
CN115520700A (zh) * 2022-10-25 2022-12-27 浙江御辰东智能科技有限公司 一种多轴多传感器融合的张力稳定方法及装置
CN115520700B (zh) * 2022-10-25 2023-11-28 浙江御辰东智能科技有限公司 一种多轴多传感器融合的张力稳定方法及装置

Also Published As

Publication number Publication date
CH559143A5 (ja) 1975-02-28
BE813304A (fr) 1974-07-31
FR2232503B1 (ja) 1979-05-25
JPS5020053A (ja) 1975-03-03
IT1013797B (it) 1977-03-30
DE2416075A1 (de) 1975-01-02
GB1432507A (en) 1976-04-22
ES426009A1 (es) 1976-07-01
FR2232503A1 (ja) 1975-01-03
CS178820B2 (en) 1977-10-31

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