EP0432837B1 - A device for anchoring the thread to the surface of the winding bobbin - Google Patents

A device for anchoring the thread to the surface of the winding bobbin Download PDF

Info

Publication number
EP0432837B1
EP0432837B1 EP90203212A EP90203212A EP0432837B1 EP 0432837 B1 EP0432837 B1 EP 0432837B1 EP 90203212 A EP90203212 A EP 90203212A EP 90203212 A EP90203212 A EP 90203212A EP 0432837 B1 EP0432837 B1 EP 0432837B1
Authority
EP
European Patent Office
Prior art keywords
bobbin
thread
reel
winding
lever
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
EP90203212A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0432837A3 (en
EP0432837A2 (en
Inventor
Roberto Badiali
Luigi Colli
Giuseppe Dal Bo
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.)
Savio Macchine Tessili SpA
Original Assignee
Savio Macchine Tessili SpA
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 Savio Macchine Tessili SpA filed Critical Savio Macchine Tessili SpA
Publication of EP0432837A2 publication Critical patent/EP0432837A2/en
Publication of EP0432837A3 publication Critical patent/EP0432837A3/en
Application granted granted Critical
Publication of EP0432837B1 publication Critical patent/EP0432837B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65H65/00—Securing material to cores or formers
    • 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

  • the present invention relates to a device that may be carriage-mounted and which enables the initial end of the thread to be anchored to the surface of a winding bobbin on which the reel is being formed and the said anchorage is made in the section of axial travel of the windings of criss-cross thread.
  • the formation of one or more initial coils of thread wound onto the bobbin, located at one end and exterior to the reel being formed, constitutes a waste of material and loss of time to remove the said coils of thread while the reel is being used, since the said coils are often frayed due to the damaging crushing and friction action of the supply cylinder.
  • the said first coils are usually formed by securing the thread end, with a known device, at the start of the spooling cycle between the end of the bobbin and the mandrel (centre) of the reel-carrier arm.
  • GB-A-2 039 552 discloses a patrolling device for the replacement of full bobbins in a winding machine that comprises an arm for picking up, holding and placing an empty bobbin between the centres of a bobbin mandrel and a linkage comprising a catching element for retaining by suction the end of the yarn, provided by cutting means, said catching element moving the sucked thread underneath the empty bobbin and the winding cylinder.
  • the Applicant has tried and tested a device of definite reliability for hooking the thread onto the winding bobbin, inside the axial section of the reel being formed, without thus leaving at the end of winding any section of free hanging thread.
  • the said device has been successfully installed by the Applicant on the movable lifting carriage at the reel winding front. This avoids high installation costs since the device in question uses for its housing and its movement a movable carriage which is already in existence, and this in itself, apart from being extremely advantageous, is also very safe and provides an excellent solution to both the general and specific problems posed by such a problematical situation.
  • the present invention is therefore proposed not only to relieve service personnel of the task of dealing with the above-mentioned entanglement of free threads from the reels, but also has the aim of ensuring correct operation as regards twisting and doubling.
  • the present invention relates to a device which enables the initial end of thread to be anchored to the surface of the winding bobbin which is disclosed in claim 1.
  • the curved lever which is supported by the said arm, is constantly pushed against the surface of the bobbin by an elastic element, such as a spiral spring fitted round the rotation pin of the said lever.
  • the starting point of anchorage of the thread to the surface of the bobbin is located in the section of axial length inside the reel being formed.
  • the device covered by the present invention is housed in a carriage that moves along the entire winding front.
  • 1 is the bobbin supporting the criss-cross windings of thread for the formation of reel 14 of any shape and size
  • 2 is the cutting element of cutting blade advantageously positioned close to and coupled with gripper element 20.
  • Cutter 2 and gripper 20 elements are activated and supported by a linkage which comprises a rod 18 moved by a pneumatic or electromechanical actuator 16;
  • 3 is the roller fixed freely to curved lever 6;
  • 4 is the supporting element or bar of lever 6.
  • the said bar 4 is fixed as a single body at one of its ends to arm 8 and at the other end it has a pin 12 around which lever 6 pivots with the possibility of rotating; 5 is the outline of the movable lifting carriage which moves along the entire winding front and also houses the device covered by the present invention; 8 is the arm which picks up, holds and places bobbin 1 between the centres of reel-carrier mandrel 22.
  • the device covered by the present invention illustrated in detail in the attached Figures, operates in a manner which is easily understood.
  • the known lifting carriage 5 is moved along the winding front until it is positioned at the spooling unit in which the lift is required.
  • arm 8 picks up bobbin 1 from a bobbin supply device of the appropriate constructional type and of known state of the art while the thread extends uninterrupted and taut from the cop of thread below (not shown) to reel 14 which is full of wound thread and being unloaded as shown in Figure 1.
  • Thread 7 is held by gripper element 20 the end of which is in the form of a hook and the said thread 7 is also positioned by the end of movable portion of sheeting 15. Curved lever 6 pushes against bobbin 1.
  • next stage arm 8 is activated to rotate angularly around pin 21 to place bobbin 1 between the centres of reel-carrier mandrel 22.
  • the said rotation is brought about by known means housed in carriage 5.
  • bobbin 1 interferes with taut thread 7 which partly winds round it along a circumferential sector when the bobbin is positioned and gripped between the centres of mandrel 22 (see Figure 2).
  • Thread 7 winds round bobbin 1 around a considerable circumferential arc and is pressed tightly against the surface of bobbin 1 by roller 3 (see Figure 4). Partly overlapping this latter operating stage cutter element 2 is activated by acutator 16 and its rod 18. Thread 7 is cut thus releasing reel 14 which is recovered by a conveyor belt (not shown).
  • friction wheel 23 is brought close to one end of mandrel 22 and is made to rotate, by known means, to impart a few rotations to bobbin 1 so that the first coils of thread 7 wind onto it (see Fig. 5).
  • the hookup and start of depositing the first coils of wound thread occurs with assured reliability since the initial end of the thread is held and, with maximum safety, brought close to the surface of bobbin 1 by free roller 3.
  • the said initial windings hook on and secure themselves to the surface of bobbin 1 in an axial section inside the reel that will start to form with windings of criss-cross thread in the spooler.
  • friction wheel 23 rises releasing its contact with mandrel 22 and elements 8, 16, 10 together with their operating means reposition themselves inside lifting carriage 5.
  • the cycle for changing reel 14 is thus completed and the device covered by the present invention may be moved to another spooler by movable carriage 5.

Landscapes

  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
EP90203212A 1989-12-12 1990-12-06 A device for anchoring the thread to the surface of the winding bobbin Expired - Lifetime EP0432837B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2266589 1989-12-12
IT02266589A IT1237883B (it) 1989-12-12 1989-12-12 Dispositivo per ancorare il filo alla superficie del tubetto di avvolgimento

Publications (3)

Publication Number Publication Date
EP0432837A2 EP0432837A2 (en) 1991-06-19
EP0432837A3 EP0432837A3 (en) 1992-03-18
EP0432837B1 true EP0432837B1 (en) 1996-04-03

Family

ID=11199028

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90203212A Expired - Lifetime EP0432837B1 (en) 1989-12-12 1990-12-06 A device for anchoring the thread to the surface of the winding bobbin

Country Status (3)

Country Link
EP (1) EP0432837B1 (it)
DE (1) DE69026350T2 (it)
IT (1) IT1237883B (it)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20050629A1 (it) * 2005-04-13 2006-10-14 Savio Macchine Tessili Spa Dispositivo e procedimento per la manipolazione e il controllo del filo in una testa di roccatura di una macchina roccatrice nelle operazioni di levata di una rocca
CN108682551B (zh) * 2018-08-24 2023-08-15 海盐爱建股份有限公司 一种全自动点火线圈绕线机

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE633968A (it) * 1962-06-22
IT1005234B (it) * 1973-10-23 1976-08-20 S Spa Off Dispositivo per scaricare le roc che sezionare e pinzare il filo posizionare caricare e bloccare automaticamente i tubetti durante il ciclo di lavorazione dei filati particolarmente per le roccatrici automatiche
IT1047690B (it) * 1975-10-03 1980-10-20 Cognetex Spa Dispositivo per dare inizio all avoolgimento di un nastro di fibre tessili su un tubetto di supporto per la formazione di una bobina da app@icarsi a macchine tessili con uscita a bobine
FR2446792A1 (fr) * 1979-01-18 1980-08-14 Alsacienne Constr Meca Dispositif de changement automatique de bobine sur machine textile equipee d'un systeme de bobinage

Also Published As

Publication number Publication date
EP0432837A3 (en) 1992-03-18
EP0432837A2 (en) 1991-06-19
IT1237883B (it) 1993-06-18
DE69026350T2 (de) 1996-08-14
DE69026350D1 (de) 1996-05-09
IT8922665A0 (it) 1989-12-12

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