EP0321406A1 - Flechtmaschine - Google Patents

Flechtmaschine Download PDF

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Publication number
EP0321406A1
EP0321406A1 EP88810850A EP88810850A EP0321406A1 EP 0321406 A1 EP0321406 A1 EP 0321406A1 EP 88810850 A EP88810850 A EP 88810850A EP 88810850 A EP88810850 A EP 88810850A EP 0321406 A1 EP0321406 A1 EP 0321406A1
Authority
EP
European Patent Office
Prior art keywords
braiding
machine according
reel
braid
orbits
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.)
Withdrawn
Application number
EP88810850A
Other languages
English (en)
French (fr)
Inventor
Charles Maillefer
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0321406A1 publication Critical patent/EP0321406A1/de
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04C—BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
    • D04C3/00—Braiding or lacing machines
    • D04C3/02—Braiding or lacing machines with spool carriers guided by track plates or by bobbin heads exclusively
    • D04C3/20—Arrangement of bobbin heads and guides or track plates in the machine

Definitions

  • known braiding machines comprise a braid receiver defining a braiding axis and a guide and drive device for braid elements mounted on reels and unwinding in directions which converge towards a braiding point. located on the braiding axis.
  • the guide device comprises reel holders distributed over a plurality of supports which each guide a group of reel holders along a separate orbit which surrounds the braiding axis.
  • the characteristics defined above are found for example in the braiding machine according to patent CH 636 146, or in the machine according to the publication of European patent application EP 00 88 913.
  • the different groups of spool holders deliver braid elements which describe conical surfaces having their apex at the braiding point and these conical surfaces intersect.
  • the number of supports and groups of reel holders is two.
  • One of the two conical plies described by the braid elements coming from each of the two groups of spool holders has as its director a circle centered on the braiding axis, while the other ply has as director, due to the periodic actuation of a set of levers moving radially, a closed curve which is also centered on the braiding axis, but which has a lobed shape.
  • the object of the present invention is to remedy these drawbacks.
  • the subject of the present invention is a braiding machine, comprising a braid receiver defining a braiding axis and a guiding and driving device for braid elements which each take place from a reel and which converge on a braiding point located on the braiding axis, this device comprising reel holders distributed on a plurality of supports which each guide a group of reel holders, characterized in that the braid elements are extended on the right line of the coil which carries them to the braiding point, in that each support has a guide channel for the coil carriers which it guides and in that said channels define orbits which are fixed closed curves placed in relative positions such as the conical surfaces described by the braid elements from the different groups of spool holders intersect.
  • the machines which will be described below are mainly characterized by the fact that, unlike known machines, the orbits which the different groups of bobbins follow are not centered on the braiding axis. It has in fact been observed that, if the orbits are off-center with respect to the braiding axis, conical sheets described by elements coming directly from the reel holders can be cut in such a way that the reel holders are led on their path guides ensure regular interlacing of the braid elements, as desired, without the need to radially move the braid elements by auxiliary means or by guiding the reel holders according to lobed curves. The inertia effects which are felt in an unpleasant manner in the embodiments of known braiding machines are therefore eliminated.
  • FIG. 1 to 4 The schematic figures which will now be described explain the principle of establishing orbits in the machine according to the invention.
  • two supports 1, 2 fitted with circular guideways are integral with one another and designed so as to define two orbits 3, 4, which are circular, intersect at two points 5, 6, and are arranged symmetrically with respect to the braiding axis.
  • These orbits are defined by the intersection of two planes with a virtual sphere 7 having its center at the braiding point 8.
  • the braid receiver of the machine described is generally designated by 9. It has a reel 10 located at the part bottom of the machine and a reel 11 located at the top of the machine.
  • Figs. 3 and 4 show by way of example how the supports 1 and 2 as well as the reel holders 13 can be produced.
  • Each support 1 or 2 comprises a guide track constituted by a section with rectangular section 15 having a slot 16 in its upper surface so as to define the corresponding orbit.
  • the guide track comprises a rack 17 in which mesh pinions 18 supported by the base 19 of the coil holder 13.
  • This base carries a motor 20 which will be supplied with current by means of friction shoes and conductors mounted inside the profile 15.
  • the torque can be transmitted to the two pinions 18 for example by toothed belts 21.
  • all another drive mode for example by chains, or electromagnetic systems of the linear motor type equipping the guide tracks 15, can be used in place of the arrangement shown in FIGS. 3 and 4.
  • Each base 19 is secured to a stirrup 22 carrying the coil 23.
  • the braid elements wound on the coil 23 can naturally be of any type: ribbons of plastic or textile material, groups of wires metallic or other material, etc.
  • the reel holder drive can be either continuous or intermittent via pulses and a control device (not shown) will allow the reel holders to be controlled and their movement to be controlled.
  • the embodiment shown in fig. 5 and 6 has two separate supports. These supports are each equipped with a guide track 24 or 25 of eccentric circular shape, on the one hand or on the other hand of the braiding axis in two opposite directions.
  • the guide track 24 is closer to the braiding point 26 than the second guide track 25. It can be seen in FIG.
  • these two guideways define orbits from which extend conical sheets with circular director, the angle of which is different, the sheet defined by the guideway 25 having a larger opening than that which is defined by the guideway 24
  • the two supports being distinct from each other, the reel holders 27 guided by the track 24 or by the track 25, do not intersect.
  • the track 24 must be provided with two complete interruptions 28, placed so that the braid elements unwound from the reel carriers mounted on the track 25, can pass through track 24 when the reel holders describe their orbit.
  • the arrangement shown in Figs. 5 and 6 has four reel holders 27 on track 25, and only two on track 24.
  • the braiding point 26 is on the braiding axis defined by the reel 29 and the reel 30 of the receiver braid 31.
  • the orbits do not have to be circular and eccentric.
  • one of the orbits can even be coaxial with the braiding axis, the other being either an ellipse, an eccentric circle, or any other closed curve having no center of symmetry on the braiding axis.
  • more than two spool holder supports can be provided which surround the braiding axis without being coaxial.
  • the final appearance of the braid depends on the structures of the braid elements, the number of elements driven by each group of spool carriers and the values and directions of the speeds of the spool carriers in each group. All these parameters can be freely chosen in the construction according to the present invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
EP88810850A 1987-12-16 1988-12-09 Flechtmaschine Withdrawn EP0321406A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4905/87 1987-12-16
CH490587 1987-12-16

Publications (1)

Publication Number Publication Date
EP0321406A1 true EP0321406A1 (de) 1989-06-21

Family

ID=4284587

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88810850A Withdrawn EP0321406A1 (de) 1987-12-16 1988-12-09 Flechtmaschine

Country Status (1)

Country Link
EP (1) EP0321406A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0413658A1 (de) * 1989-08-17 1991-02-20 Charles Maillefer Flechtmaschine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB853454A (en) * 1956-01-16 1960-11-09 Charles Maria Wahl Improvements in and relating to winding apparatus
GB1034991A (en) * 1964-08-03 1966-07-06 C R F Ohg Di Prec E S P A Improvements in rope spinning machines
GB1299611A (en) * 1969-06-26 1972-12-13 British Insulated Callenders Improvements in braiding machines

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB853454A (en) * 1956-01-16 1960-11-09 Charles Maria Wahl Improvements in and relating to winding apparatus
GB1034991A (en) * 1964-08-03 1966-07-06 C R F Ohg Di Prec E S P A Improvements in rope spinning machines
GB1299611A (en) * 1969-06-26 1972-12-13 British Insulated Callenders Improvements in braiding machines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0413658A1 (de) * 1989-08-17 1991-02-20 Charles Maillefer Flechtmaschine
US5176062A (en) * 1989-08-17 1993-01-05 Maillefer Charles E Braiding machine

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

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Effective date: 19891222