WO2007083330A1 - Dispositif automatique d'insertion de bas dans des machines a coudre-à tricoter - Google Patents

Dispositif automatique d'insertion de bas dans des machines a coudre-à tricoter Download PDF

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Publication number
WO2007083330A1
WO2007083330A1 PCT/IT2006/000030 IT2006000030W WO2007083330A1 WO 2007083330 A1 WO2007083330 A1 WO 2007083330A1 IT 2006000030 W IT2006000030 W IT 2006000030W WO 2007083330 A1 WO2007083330 A1 WO 2007083330A1
Authority
WO
WIPO (PCT)
Prior art keywords
conveying
stocking
seaming
conveying elements
loading
Prior art date
Application number
PCT/IT2006/000030
Other languages
English (en)
Inventor
Tiberio Lonati
Original Assignee
Santoni S.P.A.
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 Santoni S.P.A. filed Critical Santoni S.P.A.
Priority to PCT/IT2006/000030 priority Critical patent/WO2007083330A1/fr
Priority to IT000228A priority patent/ITBS20060228A1/it
Publication of WO2007083330A1 publication Critical patent/WO2007083330A1/fr

Links

Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B23/00—Sewing apparatus or machines not otherwise provided for
    • D05B23/007—Sewing units for assembling parts of knitted panties or closing the stocking toe part

Definitions

  • the present invention relates to an automatic device for inserting stockings into knitted-seaming machines.
  • the process for manufacturing men's, women' s and children' s socks and stockings involves producing with dedicated circular machines a semifinished item made up of a tubular element which is open both on the elastic side (from which knitting begins) and on the toe side, the latter being closed through a suitable knitted-seaming step which is car- ' ried out - as was said - with a knitted-seaming machines.
  • the knitted-seaming step ends with the stocking being turned inside-out, since for aesthetic reasons seaming is carried out on the reverse in a pre-established position.
  • the present invention mainly relates to the step in which the stocking is inserted onto a knitted-seaming machine, thus upstream from the station in which the toe is seamed.
  • a first known type of knitted-seaming machines in- volves manual loading of the stockings onto said ma- chines.
  • stockings are conveyed from the knitting area to the knitted-seaming area for seaming the toe, for instance inside baskets, with handling means such as forklift trucks. Then one or more operators pick up the stocking manually and insert it into a slide in which conveyor chains travel which convey it towards the area in which the toe is seamed. It should be pointed out that the upper portion of the stocking is inserted into the slide, so that the portion to be seamed is easily accessible to the elements carrying out seaming.
  • the step of insertion into the slide between the conveyor chains is highly critical since the stocking should be positioned correctly so that seaming is ho- mogeneous, standardized for all stockings and the finished item thus has a good aesthetic appearance and a high quality.
  • automatic devices for loading stockings onto knitted- seaming machines were conceived.
  • the automatic loading onto knitted-seaming machines occurs as a rule through a pick-and-place station and a loader.
  • the pick-and-place station the stocking is picked up and conveyed by means of air jets into a pipe frame inside which it is oriented.
  • the stocking is then picked up by a loader which slips it onto a tubular mold on which a particular positioning is carried out, which is required for the automatic loading onto the knitted-seaming machine.
  • both stocking orientation and positioning are carried out by sensor -A-
  • the stocking is picked up from the tubular molds, which are generally located on a carousel, by automatic tongs for instance, which insert it onto the slide of. the knitted-seaming machine where it is hooked by the conveyor chains.
  • the step of positioning on the conveyor chains is very often controlled and managed by complex detection and control systems which significantly increase the cost of the machine and make its management more complicated.
  • the present invention aims at obviating the above drawbacks .
  • the present invention aims at proposing an automatic device for inserting stockings into knit- ' ted-seaming machines which enables and ensures a cor- rect loading of the stockings onto the- knitted-seaming machine, and which therefore allows to obtain high- quality, standardized finished items.
  • a further aim of the invention is to provide an automatic device for inserting stockings into knitted-seaming machines which requires a small number of operators.
  • Still another aim of the invention is to propose ' an automatic device for inserting stockings into knitted-seaming machines which does not make the knitted-seaming step critLcal within the global stocking manufacturing process.
  • a final aim of the invention is to propose an automatic device for inserting stockings into knitted- seaming machines which is easy to be carried out, cheap and easy to be managed and handled.
  • - Fig ⁇ re 1 shows a side view of an automatic device for inserting stockings into knitted-seaming machines _ according to the invention
  • FIG. 2 shows a view from above of the device of Figure 1 in which the conveying means are in a first operating position
  • FIG. 3 shows a view from above of the device of Figure 1 in which the conveying means are in a second operating position;
  • - Figure 4 shows a side view of the device of Figure 1 in which the stocking is in a first position;
  • - Figure 5 shows a view from above of the device of Figure 1 in which the stocking and the conveying means are in a first operating position
  • - Figure 6 shows a view from above of the device of Figure 1 in which the stocking and the conveying means are in a second operating position.
  • an automatic device 1 for inserting stockings 12 into knitted- seaming machines comprises means 2 for conveying a stocking 12 along a seaming path I 1 and loading means 10 designed to pick up the stocking 12 from a collecting station and joining a portion thereof to the conveying means 2 in a loading station 8.
  • the conveying means 2 can be joined to a portion of the stocking 12 so that its upper portion 12a is seamed in a seaming station located along the seaming path 7.
  • the device 1 is characterized in that at least one portion of the con- veying means 2 can be shifted in the loading station 8 so as to enable the coupling of the stocking 12 with the conveying means 2.
  • the device 1 according to the present invention is joined to a known knitted-seaming machine upstream from the seaming station and is designed to cooperate with a collecting station.
  • Said collecting station is generally represented by the outlet of a pick-and-place device 1 with loader where the stocking 12 is suitably positioned and oriented in an automatic manner and then inserted onto the knitted-seaming machine .
  • the conveying means 2 comprise at least one pair of conveying elements 3 between which a stocking 12 portion is inserted ( Figures 4, 5 and 6) .
  • a stocking 12 portion is inserted between the conveying means 2.
  • At least one portion 3a of at least one of the conveying elements 3 of the pair can be shifted between a first position in which said conveying elements 3 are near one another and have basically parallel longitudinal axes 4 in order to convey the stock- ing 12 along the seaming path 7 ( Figures 2 and 5) , and a second position in which the conveying elements 3 are away from one another so as to increase the space 5 between them, at least in said portion 3a, in order to make the insertion of the stocking 12 easier (Fi ' g- ures 3 and 6) .
  • At least one portion 3a of at least one conveying element 3 can be shifted between the first and second position in a basically perpendicular direction with respect to the conveying direction of the stocking 12 along the seaming path 7.
  • At least one portion 3a of at least one conveying elements 3 of the pair can be shifted between the first and second portion in an inclined direction with respect to the conveying direction of the stocking 12 along the seaming path 7.
  • the two conveying elements 3 of the pair in the second position form a sort of V- shape whose opening is on the loading means 10, pre- cisely so as to make the insertion of the stocking 12 between said conveying elements 3 easier and to ensure its correct positioning.
  • the conveying means 2 can comprise at least two pairs of conveying elements 3 arranged along the seaming path 7 and designed to cooperate so as to convey the stocking 12.
  • At least one of the conveying elements 3 of at least one of said pairs is designed to be shifted between the first and second position. s a. rule, therefore, in case of only one pair of con- veying elements 3 at least one portion 3a of either one conveying element 3 or of both elements 3 can be shifted between the first and second position. In case of more joined pairs of conveying elements 3, con- versely, at least one portion 3a of either one or of both the conveying elements 3 of the first pair, i.e. the one joined to the loading means 10 and cooperating with them, can be shifted between the two positions.
  • the protected inventive idea is not limited to said pattern but includes all types of shift of the various conveying elements 3 of the various pairs between the two positions in order to make the insertion of the stocking 12 and its correct positioning between said conveying means 2 easier and to ensure a good quality seaming.
  • the conveying elements 3 of each pair comprise conveyor chains 6.
  • they can comprise conveyor belts.
  • the device 1 further comprises means 11 for shifting the conveying means 2 between the first and second position. Said means 11 can be represented for instance by hydraulic devices.
  • the device 1 according to the present invention also comprises a slide 9 suitable to define -li ⁇
  • the loading means 10 pick up the stocking 12 from the collecting station, insert it into the slide 9 and then reach the loading station 8 where they cooperate with the conveying means 2 in order to insert the stocking 12 between the first pair of conveying elements 3.
  • the stocking 12 further remains preferably joined to said slide 9 for the whole seaming path 7 as far as the station getting out of the knitted-seaming machine where it generally gets into a device 1 which turns it inside-out.
  • the loading means 10 comprise tongs and can be shifted between the collecting station and the loading station 8. As -a rule, said means remain in the loading station 8 until the stocking 12 starts being shifted by means of the conveying elements 3 along the seaming path 7, thus ensuring its correct insertion and positioning.
  • the device 1 further comprises adjustment and control means acting at least upon the loading means 10, upon the conveying means 2 and upon the shifting means controlling their operation.
  • the conveying means 2 can further comprise at least one pair of secondary conveying elements 3 (not shown) designed to cooperate with the conveying elements 3 so as to convey the stocking ' 12 along at least one portion of the seaming path 7.
  • the secondary conveying elements 3 preferably comprise conveyor belts 6.
  • the inventive idea protected by the present invention includes a knitted-seaming machine characterized in that it comprises at least one automatic device 1 for inserting stockings 12 as previously described, positioned upstream from the seaming station. . r •
  • the invention thus conceived can be subject to several changes and variants, all which fall within the inventive idea. Practically, any material or size can be used depending on the various needs .
  • the invention has important advantages. First of all, a knitted-seaming machine having a device according to the invention requires only personnel with controlling tasks. As a consequence, there is a reduction as far as costs and manufacturing times are concerned and the item is no longer affected by the operator's sensibility.
  • the mobility of the conveying means further enables a stocking positioning which is always optimal and unchanged in time (at least until machine inputs are not changed in order to obtain different items) , and therefore a high quality of the finished item and a significant reduction of rejects.
  • a further advantage consists in that the device is not very expensive since it does not require complicated control systems or particular components.
  • a knitted-seaming machine equipped with an automatic device for inserting stockings according to the invention has an effective operating interconnec- tivity with upstream and downstream steps with respect to the knitted-seaming step, thus making the manufac- turing process of the stockings fluid eliminating critical spots and optimizing manufacturing lead time.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)

Abstract

L'invention concerne un dispositif automatique (1) d'insertion de bas (12) dans des machines à coudre-à tricoter, comportant un moyen (2) pour transporter un bas le long d'une trajectoire de couture (7), pouvant être joint à une partie bas (12) de manière à ce que sa partie supérieure (12a) soit cousue dans un poste de couture se trouvant le long de la trajectoire de couture (7), et un moyen de chargement (10) conçu pour saisir le bas (12) d'un poste de collecte et pour joindre une partie de celui-ci à un moyen de transport (2) dans un poste de chargement (8), l'invention étant caractérisée en ce qu'au moins une partie du moyen de transport (2) peut être décalée dans le poste de chargement (8) afin de faciliter l'accouplement du bas (12) audit moyen de transport (2).
PCT/IT2006/000030 2006-01-19 2006-01-19 Dispositif automatique d'insertion de bas dans des machines a coudre-à tricoter WO2007083330A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/IT2006/000030 WO2007083330A1 (fr) 2006-01-19 2006-01-19 Dispositif automatique d'insertion de bas dans des machines a coudre-à tricoter
IT000228A ITBS20060228A1 (it) 2006-01-19 2006-12-22 Dispositivo automatico di introduzione di calze in macchine per il rimaglio

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2006/000030 WO2007083330A1 (fr) 2006-01-19 2006-01-19 Dispositif automatique d'insertion de bas dans des machines a coudre-à tricoter

Publications (1)

Publication Number Publication Date
WO2007083330A1 true WO2007083330A1 (fr) 2007-07-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2006/000030 WO2007083330A1 (fr) 2006-01-19 2006-01-19 Dispositif automatique d'insertion de bas dans des machines a coudre-à tricoter

Country Status (1)

Country Link
WO (1) WO2007083330A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4509666A (en) * 1983-04-11 1985-04-09 Rosso Industrie S.P.A. Stocking turning device
EP0204058A1 (fr) * 1985-05-24 1986-12-10 SOLIS S.r.l. Procédé et dispositif pour placer automatiquement les bas tubolaires d'un collant sur les deux tubes de l'appareil de retournement pneumatique d'une machine à coudre les pointes de collant
US5106075A (en) * 1989-04-04 1992-04-21 Levi Strauss & Co. Fabric turner
EP0508014A2 (fr) * 1991-03-26 1992-10-14 Sara Lee Corporation Système de manutention de matériaux
EP0737769A1 (fr) * 1995-04-11 1996-10-16 Detexomat Machinery Limited Procédé et dispositif pour manipuler une longueur de matériau flexible
US6155466A (en) * 1997-06-02 2000-12-05 Matec S.P.A. Apparatus for stretching apart one end of a tubular article
EP1088925A1 (fr) * 1999-09-29 2001-04-04 Conti Complett S.p.A. Appareil et procédé pour transférer automatiquement des articles tubulaires, en particulier des collants, à une machine à coudre adaptée à la fermeture de ces articles à une de leurs extrémités axiales

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4509666A (en) * 1983-04-11 1985-04-09 Rosso Industrie S.P.A. Stocking turning device
EP0204058A1 (fr) * 1985-05-24 1986-12-10 SOLIS S.r.l. Procédé et dispositif pour placer automatiquement les bas tubolaires d'un collant sur les deux tubes de l'appareil de retournement pneumatique d'une machine à coudre les pointes de collant
US5106075A (en) * 1989-04-04 1992-04-21 Levi Strauss & Co. Fabric turner
EP0508014A2 (fr) * 1991-03-26 1992-10-14 Sara Lee Corporation Système de manutention de matériaux
EP0737769A1 (fr) * 1995-04-11 1996-10-16 Detexomat Machinery Limited Procédé et dispositif pour manipuler une longueur de matériau flexible
US6155466A (en) * 1997-06-02 2000-12-05 Matec S.P.A. Apparatus for stretching apart one end of a tubular article
EP1088925A1 (fr) * 1999-09-29 2001-04-04 Conti Complett S.p.A. Appareil et procédé pour transférer automatiquement des articles tubulaires, en particulier des collants, à une machine à coudre adaptée à la fermeture de ces articles à une de leurs extrémités axiales

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