EP0041435A1 - Dispositif pour couper la chaînette sortant d'une surjeteuse ou analogue - Google Patents

Dispositif pour couper la chaînette sortant d'une surjeteuse ou analogue Download PDF

Info

Publication number
EP0041435A1
EP0041435A1 EP19810400813 EP81400813A EP0041435A1 EP 0041435 A1 EP0041435 A1 EP 0041435A1 EP 19810400813 EP19810400813 EP 19810400813 EP 81400813 A EP81400813 A EP 81400813A EP 0041435 A1 EP0041435 A1 EP 0041435A1
Authority
EP
European Patent Office
Prior art keywords
filament
barrel
serger
suction means
assembled
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.)
Ceased
Application number
EP19810400813
Other languages
German (de)
English (en)
French (fr)
Inventor
Robert Guille
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.)
Olivier Guille & Fils Francaise Ets SA
Original Assignee
Olivier Guille & Fils Francaise Ets SA
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 Olivier Guille & Fils Francaise Ets SA filed Critical Olivier Guille & Fils Francaise Ets SA
Publication of EP0041435A1 publication Critical patent/EP0041435A1/fr
Ceased legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B65/00—Devices for severing the needle or lower thread
    • D05B65/06—Devices for severing the needle or lower thread and for disposing of the severed thread end ; Catching or wiping devices for the severed thread
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B65/00—Devices for severing the needle or lower thread
    • D05B65/006—Devices for severing the needle or lower thread with heated tools
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
    • D05D2207/00—Use of special elements
    • D05D2207/02—Pneumatic or hydraulic devices
    • D05D2207/04—Suction or blowing devices

Definitions

  • the present invention relates to a cutting device for serger or similar machine, and in particular to cut the chain of textile threads produced continuously at the outlet of such a machine, the chain alternately constituting a seam for each assembled article and a free cord connecting assembled articles, this device comprising an electric heating filament disposed in the vicinity of the path of the chain, and a barrel connected to suction means for successively attracting the free cords to the heating filament, so as to successively cut these free cords by fusion at a point located near the seam of the neighboring article.
  • an overlock generally produces continuously a cord of textile threads - called a chain - which carries out an edge-to-edge stitching on the articles to be assembled which are presented in an appropriate manner at the entry of this overlock.
  • Overlockers are in particular, but not limited to, used for making articles of clothing such as sweaters or socks.
  • the tubes are made to run parallel to each other so that their end is closed by a seam produced by means of the serger.
  • the chain produced continuously by the serger, constitutes a free cord which connects these two articles.
  • the object of the invention is to cut each free cord at its two ends so as to separate the assembled articles without undesirable pieces of chain remaining attached to these articles.
  • the heating filament is mounted transversely in this mouth.
  • the temperature of the filament may fluctuate depending on the speed and temperature of the air drawn into the barrel. These parameters must therefore be kept constant, which is an additional constraint.
  • the object of the invention is to remedy these drawbacks by providing a device making it possible to proceed without stopping and restarting, at a rapid rate, the overlock machine, so as to limit the energy consumption and the noise production to what is strictly necessary.
  • the cutting device is characterized in that the heating filament is mounted next to the mouth of the barrel connected to the suction means.
  • the heating filament is little influenced by the air flow. It is therefore satisfied with a reduced supply power and does not risk instantaneously melting in the event of the aspiration being stopped.
  • the filament heats up quickly because it is not subjected to intense cooling by the air from the suction air stream. It is therefore without inconvenience to stop and restart the device repeatedly.
  • the device shown in Figures 1 to 3 comprises a housing 1 to which is welded a bent tab 2 intended to be screwed to the serger.
  • the housing 1 comprises a tube 3 of square section and axis substantially parallel to the direction of travel of the articles to be assembled in the serger at the point where the chain is formed.
  • the tube 3 is closed at its two ends by two plates 4 made of an electrically insulating material.
  • the device further comprises an electric heating filament 6 mounted in the vicinity of the path 7 ( Figure 2) that follow the seams made using the chain.
  • the active central part of the filament 6 is substantially vertical in the service position and perpendicular to the path 7.
  • the heating filament 6 is connected to the electrical supply wires 8 by two rigid wires 9 parallel to the axis of the tube 3 and slidably engaged in the plates 4. Two locking studs 11 screwed into the tube 3 in line with each of the rigid wires 9 block these relative to the housing 1.
  • the supply wires 8 are connected to means shown in the Figure 7, and which will be described later, allowing the heating of the filament 6 to be adjusted according to three different powers.
  • a suction barrel 12, with an axis parallel to the rigid wires 9, is also mounted to slide through the two insulating plates 4.
  • a screw 13 engaged in the upper wall of the tube 3, blocks the barrel 12 in translation relative to the housing 1.
  • the central part of the heating filament 6 is connected to the rigid wires 9 by two horizontal parts 14 biased towards the barrel 12, so that the central part of the filament 6 is located very close to the outer wall of the barrel 12, without touching it.
  • the barrel 12 From its mouth 16, the barrel 12 has a longitudinal slot 17 which extends substantially to the right of the heating filament 6 and along the generatrix of the barrel 1 2, the closest to the filament 6.
  • the slot 17 is widened on the side of the mouth 16.
  • a metal compressed air supply tube 18 is welded along the barrel 12, between its mouth 16 and the housing 1.
  • the tube 18 On the side of the mouth 16, which is flared truncally, the tube 18 is connected to a thin conduit 19 which is bent in a hairpin to bypass the mouth 16 and sink a certain distance inside the barrel 12, beyond the start 17a of the slot 17.
  • the conduit 19 is pressed against the inner wall of the barrel 12, according to a generator of the latter angularly spaced about 120 ° relative to the slot 17.
  • the tube 18, which is bent to pass next to the box 1 is terminated by a connector 21 allowing its connection to a compressed air distribution circuit.
  • the connector 21 is welded to the barrel 12 by means of a tubular support 22, opposite the mouth 16 relative to the housing 1.
  • the wall of the end of the barrel 12 adjacent to the connector 21 is thickened, and a bent pipe 23 is fitted therein with its outlet 24 directed downwards.
  • the device is mounted on the frame 31 of an overlock machine which comprises blades 32 intended to refresh the edges of the articles 36a, 36b to be assembled, and needles 33 which produce the chain 34.
  • an overlock machine which comprises blades 32 intended to refresh the edges of the articles 36a, 36b to be assembled, and needles 33 which produce the chain 34.
  • the chain 34 forms a seam 37 connecting these two edges.
  • the chain 34 produced when no article to be assembled is engaged between the needles 34 constitutes a free cord 38 which, before being cut, connects the two seams 37 of two different assembled articles 36a, 36b (FIG. 4 ).
  • edges to be assembled of articles 36a, 36b are constrained by means forming part of the serger, follow the path 7 which, in 7a, is initially parallel to the axis of the barrel 12, and close enough to this axis to be directed towards the interior of the barrel 12.
  • the seams 37 then follow a curved part 7b of the path 7 so as to pass a short distance past the filament 6 while avoiding the barrel 12.
  • FIG 7 shows the electrical installation of the installation.
  • the serger 51 is supplied from a voltage source 52 via a general contactor 53. Downstream of the latter, and in parallel with the serger 51 is connected a solenoid valve 54 mounted on the tube 56 of compressed air supply intended to be connected to conduit 19 ( Figures 1 to 3).
  • the solenoid valve 54 is of the closed type in the absence of electrical voltage.
  • a transformer 57 has its input terminals A and B - connected just downstream of the general contactor 53.
  • the filament 6 is connected to the output of the transformer 57, between a terminal 58 of 0 Volt voltage and a terminal 59 which can be connected alternately to one of three transformer outputs 61,62,63, delivering respectively 1.3 V (standby voltage), 1.5 V, and 1.7 V (working voltages).
  • a switch 64 makes it possible to choose the working voltage.
  • a relay contactor 66 alternately puts the terminal 59 of the filament 6 under working voltage (1.5 or 1.7 V) or under standby voltage.
  • the transformer 57 has two other output terminals 67 between which it delivers a control voltage of 24 V.
  • terminals 67 are connected in parallel the coil 68 of the contactor 66, the coil 69 of a contactor 71 controlling the electrical supply of the solenoid valve 54, a timer contact 72, and the coil 73 of a contactor 74 controlling the overlock 51 supply independently of the solenoid valve 54.
  • a switch 76 actuable by a feeler 77 sensitive to the passage of articles being assembled in the serger.
  • the probe 77 controls the opening of the switch 76 and of the contact 72 in the absence of articles and their closing in the opposite case. However, the timer ensures a slight delay each time contact 72 is opened.
  • a contactor 78 enables the filament 6 to be put out of service.
  • the probe 77 commands the immediate closure of the contacts 72 and 76.
  • the contactor 74 closes and the serger starts.
  • the closure of the contact 72 in turn causes the closure of the contactor 71 as well as the tilting of the contactor 66.
  • the suction begins in the barrel 12, and the filament 6 is supplied under one of its two working voltages selected using switch 64.
  • the probe 77 controls the stopping of the serger. It also controls, but with delay thanks to the timer, the opening of the contact 71 and the switching of the contactor 66. Because of this delay, the cutting of the chain of the last articles of the series can be carried out although all the articles have already left the serger 51 and it is already stopped.
  • the passage of the filament 6 from the working power to the standby power makes it possible to maintain the filament at a substantially constant temperature, that the suction means whether in service or not.
  • the items to be assembled are socks 36a, 36b.
  • the seam 37 of the assembled sock 36a runs along the path 7 in front of the filament 6, without being affected by the heating of the latter, the distance from the path 7 to the filament 6 being sufficient in this regard.
  • transfer means provided on the serger force the seams 37 to follow the path 7 without deviating despite the aspiration into the barrel 12.
  • the free cord 38 which connects the end of the seam 37 of the already sewn sock 36a, at the start of the seam 37 of the sock being sewn 36b, curves with respect to the path 7, and engages in the slot 17 of the barrel 12, under the effect of the suction in the latter.
  • a point 39 of the adjacent end of the free cord 38 meets the heating filament 6, which cuts the cord at this point 39.
  • the position of the barrel and the filament 6 can be adjusted according to a relatively large stroke relative to the housing 1 and to the bent tab 2, so that the device according to the invention can be very easily adapted to different models of sergers.
  • the studs 11 allow to carry out a fine adjustment of the position of the filament 6 relative to the start 17a of the slot 17, so that the cut of each free cord is ensured and that the piece of free cord remaining on each assembled article is as small as possible.
  • the invention makes it possible to produce a device for cutting free chain cords, which is particularly inexpensive to manufacture and maintain.
  • this device contributes to the robustness of the seams produced since the heating filament welds the strands at the end of each seam 37.
  • the means of attraction could be different, and include for example a vacuum pump system. These means could also include a fan, which sucks the free cords towards the filament, or on the contrary pushes them in this direction by blowing.
  • housing 1 can be modified, and the adjustment of the position of the filament 6 could be made dependent on that of the barrel 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
EP19810400813 1980-06-04 1981-05-22 Dispositif pour couper la chaînette sortant d'une surjeteuse ou analogue Ceased EP0041435A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8012377 1980-06-04
FR8012377A FR2483971A1 (fr) 1980-06-04 1980-06-04 Dispositif et procede pour coupler la chainette sortant d'une surjeteuse

Publications (1)

Publication Number Publication Date
EP0041435A1 true EP0041435A1 (fr) 1981-12-09

Family

ID=9242683

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810400813 Ceased EP0041435A1 (fr) 1980-06-04 1981-05-22 Dispositif pour couper la chaînette sortant d'une surjeteuse ou analogue

Country Status (3)

Country Link
EP (1) EP0041435A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
ES (1) ES8204006A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2483971A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3027197A1 (fr) * 2014-10-16 2016-04-22 Vuitton Louis Sa Outil pour couper et cauteriser un fil de couture par brulage
CN109778446A (zh) * 2019-02-22 2019-05-21 杰克缝纫机股份有限公司 一种缝纫机防鸟巢装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3142279A (en) * 1962-10-05 1964-07-28 Tek Matic Corp Electric resistant thread-trimming device
US3143987A (en) * 1961-10-26 1964-08-11 Union Special Maschinenfab Thread chain severing device for sewing machines
US3159124A (en) * 1964-04-27 1964-12-01 Tek Matic Corp Electrical thread-trimming device
US3217680A (en) * 1964-04-01 1965-11-16 Harris Marshall Hosiery Mills Cutting device
US3304897A (en) * 1964-12-03 1967-02-21 Rubin Julius Sewing machine having thread trimming device mounted thereon
GB1093275A (en) * 1963-09-05 1967-11-29 Blount & Company Ltd Improvements in or relating to yarn severing apparatus
DE1710917B1 (de) * 1963-02-15 1970-04-30 Carl Schmale Fa Fadenketten-Abschneideinrichtung fuer Naehmaschinen

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3143987A (en) * 1961-10-26 1964-08-11 Union Special Maschinenfab Thread chain severing device for sewing machines
US3142279A (en) * 1962-10-05 1964-07-28 Tek Matic Corp Electric resistant thread-trimming device
DE1710917B1 (de) * 1963-02-15 1970-04-30 Carl Schmale Fa Fadenketten-Abschneideinrichtung fuer Naehmaschinen
GB1093275A (en) * 1963-09-05 1967-11-29 Blount & Company Ltd Improvements in or relating to yarn severing apparatus
US3217680A (en) * 1964-04-01 1965-11-16 Harris Marshall Hosiery Mills Cutting device
US3159124A (en) * 1964-04-27 1964-12-01 Tek Matic Corp Electrical thread-trimming device
US3304897A (en) * 1964-12-03 1967-02-21 Rubin Julius Sewing machine having thread trimming device mounted thereon

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3027197A1 (fr) * 2014-10-16 2016-04-22 Vuitton Louis Sa Outil pour couper et cauteriser un fil de couture par brulage
CN109778446A (zh) * 2019-02-22 2019-05-21 杰克缝纫机股份有限公司 一种缝纫机防鸟巢装置
CN109778446B (zh) * 2019-02-22 2021-04-13 杰克缝纫机股份有限公司 一种缝纫机防鸟巢装置

Also Published As

Publication number Publication date
FR2483971B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1984-01-20
ES502533A0 (es) 1982-04-01
FR2483971A1 (fr) 1981-12-11
ES8204006A1 (es) 1982-04-01

Similar Documents

Publication Publication Date Title
EP1998656B1 (fr) Appareil de preparation culinaire muni d'un disposititif de securite
FR2681278A1 (fr) Dispositif de coupe d'un materiau en feuilles, notamment du textile.
EP0041435A1 (fr) Dispositif pour couper la chaînette sortant d'une surjeteuse ou analogue
FR2576329A1 (fr) Fer a repasser de voyage
FR2665249A1 (fr) Four de fusion par induction en creuset froid.
FR2877828A1 (fr) Machine et procede lave-vaisselle
EP1332251A1 (fr) Installation de production d'une nappe non tissee a diffuseur et a separation des filaments par voie electrostatique
FR2555963A1 (fr) Machine a ceinturer les emballages
US4106973A (en) Yarn welding device
FR2947750A1 (fr) Dispositif de coupe et de soudure par ultrasons utilisable notamment sur metiers a tisser
EP0564753A2 (fr) Dispositif pour le préfixage thermique des bas à la sortie d'une machine circulaire
EP0008985A2 (fr) Machine de séparation par rupture de chapelets d'articles textiles tubulaires assemblés par des fils fragiles
FR2467251A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR2662540A1 (fr) Disjoncteur a moyenne tension.
BE646196A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CH361237A (fr) Machine automatique à emballer sous film thermoplastique
EP0048656A1 (fr) Dispositif pour machine d'ouverture, transfert et découpe de gaine thermoplastique en manchons pour pose autour de récipients
CH312142A (fr) Procédé pour l'assemblage par couture, après découpage, de pièces de tissus constitués au moins en partie par des fibres en résine synthétique thermoplastique, et appareil pour la mise en oeuvre de ce procédé.
FR91784E (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR2594453A1 (fr) Dispositif de protection pour une machine electrique a couper les tissus
FR2519537A1 (fr) Machine a cafe menagere du type " expresso " a faible resistance de chauffage et a pompe electromagnetique
BE488326A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR2743576A1 (fr) Dispositif d'alimentation notamment de produits detergents
CH633660A5 (fr) Pompe a conduction pour metal liquide.
BE570666A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

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

17P Request for examination filed

Effective date: 19810527

AK Designated contracting states

Designated state(s): AT BE CH DE GB IT LU NL SE

ITCL It: translation for ep claims filed

Representative=s name: BARZANO' E ZANARDO ROMA S.P.A.

TCAT At: translation of patent claims filed
TCNL Nl: translation of patent claims filed
DET De: translation of patent claims
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 19840107

RIN1 Information on inventor provided before grant (corrected)

Inventor name: GUILLE, ROBERT