EP0191955B1 - Batten for weaving loom - Google Patents

Batten for weaving loom Download PDF

Info

Publication number
EP0191955B1
EP0191955B1 EP19850201218 EP85201218A EP0191955B1 EP 0191955 B1 EP0191955 B1 EP 0191955B1 EP 19850201218 EP19850201218 EP 19850201218 EP 85201218 A EP85201218 A EP 85201218A EP 0191955 B1 EP0191955 B1 EP 0191955B1
Authority
EP
European Patent Office
Prior art keywords
batten
axis
oscillatory
gravitational
lies
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
Application number
EP19850201218
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0191955A1 (en
Inventor
Bernard J. Pauwels
Paul J. Huyghe
Ignace P. Meyns
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.)
Picanol NV
Original Assignee
Picanol NV
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 Picanol NV filed Critical Picanol NV
Publication of EP0191955A1 publication Critical patent/EP0191955A1/en
Application granted granted Critical
Publication of EP0191955B1 publication Critical patent/EP0191955B1/en
Expired legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/40—Forming selvedges
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/60—Construction or operation of slay

Definitions

  • the invention involves a weaving loom having a batten.
  • the invention relates to a weaving loom the batten beam of which is con- stucted as a counter weight.
  • the invention involves a weaving loom having a batten in which the gravitational axis of the batten, including any counter weight, does not coincide with the oscillatory axis, but lies instead at a certain distance under the oscillatory axis.
  • the batten is constructed such that together with the aforementioned characteristics, it also exhibits a minimum mass moment of inertia in relation to its centre of gravity or gravitational axis.
  • Known weaving looms are mainly equipped with a batten consisting of a cylindrical batten shaft mounted in a bearing upon which batten legs, reed beam and reed mounted.
  • the gravitational axis does not coincide with the oscillatory axis, and the gravitational axis always lies on the side of the reed with respect to the oscillatory axis, which amounts to the gravitational axis lying above the oscillatory axis.
  • the batten should be equipped with counterweights in such a way as to be in accordance with the general principle of equilibrium, which is known from the science of dynamics, according to which the counter weights are fitted to an oscillating body such that the centre of gravity of the overall structure lies at the oscillatory axis thereof.
  • a well-known application provides a solution in which the original batten shaft is displaced over a fairly large distance with respect to the oscillatory axis by the use of crank webs.
  • Such a construction offers the advantage that the total weight of the batten remains practically unchanged, whereby the displaced batten shaft operates as a counter weight and the batten legs are usually produced hollow so that the total weight of a batten balanced in this way is not greater than that of the ubalanced batten.
  • Such an application is known, for example, from USA patent No. 4.076.048.
  • a batten beam mounted in bearings is known with three parallel axes, the axis of oscillation 0-0 and the gravitational axis Z-Z of which lie inside the batten beam, and the latter axis lies between the axis of oscillation 0-0 and the geometrical axis A-A.
  • the aim of this Belgium patent was a batten offering the advantage of creating minimum forces directed to the floor.
  • the present invention provides in a further amelioration by providing in a weaving loom having a batten in which a compromise is sought between the vertical and the horizontal forces, in order to become both as low as possible, in combination with a minimum mass of inertia.
  • the invention relates to a weaving loom having a batten of the type consisting of a full batten beam mounted in a bearing, upon which batten components such as batten legs, reed beam and reed are mounted, whereby the batten is mounted in the bearing such that its oscillatory axis runs parallel to the geometrical axis of the batten beam and the gravitational axis of the whole formed by the batten beam and the said components mounted thereon, whereby the oscillatory axis lies outside and the gravitational axis does not lie outside the periphery of the batten beam, and in that the gravitational axis lies between the oscillatory axis and the geometrical axis.
  • the batten which chiefly consists of a fully cylindrical batten beam and a number of batten legs 2 attached onto it which carry a reed support 3, onto which the reed 4 is attached.
  • Lines A-A, 0-0 and Z-Z show the geometrical axis of the batten beam 1 and the oscillatory and gravitational axis of the batten respectively, all three axes running parallel to each other.
  • the gravitational axis Z-Z lies underneath the oscillatory axis 0-0, whereby axis Z-Z lies not outside the circumference of the batten beam and axis 0-0 lies in accordance with the invention, outside the circumference of the batten beam (1).
  • the beneficial effect created by this is explained below using figure 3.
  • the following will also show the importance of the distance r between the oscillatory axis 0-0 and the gravitational axis Z-Z.
  • FIG 3 shows a schematic representation of a weaving loom 5 which is fixed onto supporting points 6 and 7.
  • the starting point will be taken as the most representative and simplified model, in which the batten is represented by a point mass m situated at the aforementioned distance r from the oscillatory axis 0-0 and an inertia around the centre of gravity.
  • the point mass m is shown in its lowest position so that the instantaneous acceleration due to the rotational acceleration, equal to r.a, acts horozin- tally.
  • L and Z represent the distance between the two supporting points 6 and 7 and the height of the mass m above them respectively.
  • the forces Fv are composed of two opposite force components, the first of which arises due to the aforementioned moment I.a and the second of which arises due to the moment of the force through m with respect to the supporting points 6 and 7.
  • the distance r between the oscillatory axis 0-0 and the gravitational axis Z-Z can be selected such that the absolute values of both components of each of the forces Fv, namely La/L and m.r.a.Z/L, are equal.
  • the distance r is selected such that, depending upon the desired result, a compromise is created between the values of the vertical force components Fv and the horizontal force components Fh, this in combination with the advantageous feature that 0-0 lies outside the circumference of the batten beam and that the gravitational axis lies inside or on the circumference of the cylindrical batten beam 1.
  • the aim is to manufacture the batten concerned in such a way as to minimize the mass moment of inertia I of the gravitational axis Z-Z.
  • the starting point used is a number of previously known parameters, some of which are constant and others of which can be considered as constant.
  • the values of the distance L and the angular acceleration can be assumed to be constant parameters.
  • the value of Z shows little variation in the various designs, and can be considered to be approximately constant.
  • the absolute values of the components I.a/L and m.r.a.Z/L are necessarily equal. From this it can be deduced that the product m.r.a, i.e. the magnitude of the horizontal force component Fh, is determined by the quotient of I/Z, or that in the event of the value of Z being considered to be constant, the force Fh is proportional to the moment of inertia I.
  • the batten is so constructed as to minimize the mass moment of inertia I of the overall batten with respect to the gravitational axis Z-Z.
  • the exterior surface of the fully cylindrical batten beam 1 is adjacent to the gravitational axis Z-Z.
  • This last application is constructed with a mass of 112 kg, with the gravitational axis Z-Z lying at a distance (2) of 0.079 metres from the oscillatory axis 0-0.
  • the values of L and Z are 1 metre and 0.844 metres respectively.
  • the order of magnitude of the angular acceleration a is 1800 rads/ S 2 with a loom speed of 475 revolutions per minute.
  • the moment of inertia of the practical application is 0.75 kg m 2 .
  • the forces I.a/L and m.r.aZ/L cancel each other out here, and each have a value of practically 1350 Newtons at the speed under consideration.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP19850201218 1985-02-19 1985-07-22 Batten for weaving loom Expired EP0191955B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE2060618 1985-02-19
BE2/60618A BE901765R (nl) 1985-02-19 1985-02-19 Lade voor weefgetouwen.

Publications (2)

Publication Number Publication Date
EP0191955A1 EP0191955A1 (en) 1986-08-27
EP0191955B1 true EP0191955B1 (en) 1989-05-03

Family

ID=3865729

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850201218 Expired EP0191955B1 (en) 1985-02-19 1985-07-22 Batten for weaving loom

Country Status (3)

Country Link
EP (1) EP0191955B1 (nl)
BE (1) BE901765R (nl)
DE (1) DE3569945D1 (nl)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0446560B1 (de) * 1990-03-15 1994-10-19 Sulzer RàœTi Ag Ladetrieb für eine Webmaschine mit exzentrischer Ladewelle
JP3612837B2 (ja) * 1996-01-29 2005-01-19 株式会社豊田自動織機 織機における筬打ち装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH594090A5 (nl) * 1975-06-10 1977-12-30 Sulzer Ag
FR2326511A1 (fr) * 1975-10-01 1977-04-29 Alsacienne Constr Meca Dispositif d'equilibrage des forces d'inertie creees par le battant d'un metier a tisser et par ses organes de commande
BE899057A (nl) * 1984-03-02 1984-09-03 Picanol Nv Lade voor weefgetouwen

Also Published As

Publication number Publication date
BE901765R (nl) 1985-08-19
EP0191955A1 (en) 1986-08-27
DE3569945D1 (en) 1989-06-08

Similar Documents

Publication Publication Date Title
Jeffcott XXVII. The lateral vibration of loaded shafts in the neighbourhood of a whirling speed.—The effect of want of balance
EP2329136B1 (en) Wave power plant
US5495924A (en) Half-order centrifugal pendulum vibration absorber system
EP0191955B1 (en) Batten for weaving loom
FI82758B (fi) Dynamisk vibrationsdaempare.
NO124768B (nl)
US4303834A (en) Cable wind mill
GB2104972A (en) Balancer structure in three-cylinder engines
US20180003146A1 (en) Method and system for adjusting the torque of a mass and spinning wheel rotator in a wave power plant
US4625768A (en) Batten for weaving loom
US5507512A (en) Rings for weighting a bicycle wheel
SE445090B (sv) Sett att reglera kastvinkeln vid en vibrerande anordning
JPH01244001A (ja) 高層建造物の制振方法及びその装置、並びにこの装置を制御する方法
US3315533A (en) Quadrature torque compensation for flexure spring suspended gyro
YAMAMOTO et al. Nonlinear forced oscillations of a rotating shaft carrying an unsymmetrical rotor at the major critical speed
CN205483405U (zh) 摇轴摆动系统不平衡测量装置
SU992683A1 (ru) Гаситель колебаний высотных сооружений
JPH06307495A (ja) 制振装置
CN218494081U (zh) 隔振系统残余振动消除的悬臂梁式动力吸振器
RU2078008C1 (ru) Устройство для гашения вибраций лопастей несущего винта вертолета
US3302470A (en) Vibrohammer
SU885700A1 (ru) Подвесна система котла
SU730618A1 (ru) Движитель транспортного средства
US3347502A (en) Mounting system for looms and the like
RU2020113C1 (ru) Устройство для стабилизации углового движения космического аппарата

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE FR GB IT LI NL

17P Request for examination filed

Effective date: 19860710

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: PICANOL N.V.

17Q First examination report despatched

Effective date: 19880226

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB IT LI NL

ITF It: translation for a ep patent filed
REF Corresponds to:

Ref document number: 3569945

Country of ref document: DE

Date of ref document: 19890608

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19900731

Year of fee payment: 6

ITTA It: last paid annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19920201

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20010618

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20010719

Year of fee payment: 17

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020722

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20020722

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030331

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20040624

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20040915

Year of fee payment: 20

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL