EP0560735A1 - Vorrichtung zum automatischen Positionieren von Strümpfen in einer Strumpfhosennähmaschine - Google Patents

Vorrichtung zum automatischen Positionieren von Strümpfen in einer Strumpfhosennähmaschine Download PDF

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Publication number
EP0560735A1
EP0560735A1 EP93830068A EP93830068A EP0560735A1 EP 0560735 A1 EP0560735 A1 EP 0560735A1 EP 93830068 A EP93830068 A EP 93830068A EP 93830068 A EP93830068 A EP 93830068A EP 0560735 A1 EP0560735 A1 EP 0560735A1
Authority
EP
European Patent Office
Prior art keywords
bow
rod
arms
stockings
arm
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.)
Granted
Application number
EP93830068A
Other languages
English (en)
French (fr)
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EP0560735B1 (de
Inventor
Vinicio Gazzarrini
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.)
Solis SRL
Original Assignee
Solis SRL
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 Solis SRL filed Critical Solis SRL
Publication of EP0560735A1 publication Critical patent/EP0560735A1/de
Application granted granted Critical
Publication of EP0560735B1 publication Critical patent/EP0560735B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 a device for the automatic positioning of the stockings in a machine for the formation of tights, with the automatic detection of the garter line.
  • the two stockings to be sewn together to form a pantyhose are first of all threaded on a pair of overlapping twin shapes, then they are aligned vertically and placed side by side so as to obtain the correspondence between the elastic edges and the garter lines of the two bottoms.
  • said longitudinal section leads to the determination of two edges of equal length and positioned identically with respect to the line of garter.
  • the juxtaposed edges of the two stockings are sewn together and form a pantyhose: the seam is executed over the entire length of the edges.
  • devices which are equipped with optical sensors sensitive to the difference in density between the fabric of the lower leg and that of the body tissue.
  • the two stockings, on which to work to form a pantyhose, are strung randomly on the two paired shapes.
  • the means for positioning the elastic edges grip the latter and introduce them fully onto the forms and until the garter line is threaded onto the forms and to allow thus their detection by the corresponding sensors.
  • the sensors for detecting the elastic edge of the stockings move towards and to a predetermined alignment position and the associated means for positioning said elastic edges make it possible to transfer them to said alignment position.
  • the bodies of the stockings are extended, that is to say without folds, over a predetermined length and with the elastic edges and the garter lines aligned vertically so as to allow the execution of the operation of successive cutting, correctly.
  • this known positioning device has certain drawbacks. The most important of these is the need to move the elastic edge and the leg of each stocking in two distinct phases and by means of different positioning members, which must work separately. And this implies a greater complexity of construction of the machine, to the detriment of the economy of production and exercise thereof. Furthermore, because of the construction complexity of said known device, the reliability of the machine which is equipped with it turns out to be greatly reduced, which leads to more frequent maintenance operations and longer downtimes.
  • Another disadvantage consists in the fact that the overall time necessary for the production of a pantyhose turns out to be strongly conditioned by the speed of execution of the abovementioned operations of positioning the stockings on the corresponding shapes, so that, if one wishes to increase maximum production speed of tights and taking into account that in the current state, it is not possible to further reduce the cutting and sewing times of the stockings, it is not possible to obtain extremely narrow margins of tolerance in the detection of garter lines, which leads to inaccuracies in the production of tights.
  • the object of the present invention is to eliminate the drawbacks mentioned without increasing the length of the shapes.
  • the advantages obtained thanks to the present invention essentially consist in the fact that it is possible to obtain the tightening of the body and of the upper zone of the legs of each stocking in a single phase and with the same means of movement; which the production time of a pantyhose turns out to be considerably reduced or otherwise that, for the same time used, the speed of movement of the stockings is greatly reduced, in favor of the precision in the detection of the garter lines and, consequently , to the benefit of the quality of the tights produced; that the proposed device is simple to make and therefore economical and reliable even after very long continuous use; that the machines for the production of tights currently available can be easily and quickly fitted with a device according to the invention.
  • FIG. 1 shows a plan view, partially in section, of a machine clamp for sewing tights, equipped with a device for positioning the stocking in accordance with the invention
  • Fig.2 shows the perspective view of the device of Fig. 1 with the tensioning bow in the retraction position
  • Fig. 3 shows the device of FIG. 1 with the tensioning bow in the extraction position
  • Fig. 4 shows the detailed axonometric view, partially in section, of the drive and guide means of the tensioning bow of the device of FIG.
  • Fig. 5 shows the plan view, in section, of an alternative embodiment of the actuation means of the tensioning bow
  • Figs. 6A and 6B show the plan view and, respectively, axonometric view of the actuation means of the tensioning arch according to another embodiment.
  • a device for positioning the stockings in a machine for sewing tights with an optical sensor (18) for the detection of the garter line and comprising two paired forms of support for the stockings, each of the forms having two horizontal articulated arms (10) whose points are extended and connected by means of a bow (7) produced with a nylon thread and which is coplanar with the arm (10) and has the convexity directed towards the machine, provides that said bow (7) has its legs (71) housed in a sliding manner inside the arms (10) of the corresponding shape in their longitudinal direction between two positions , one of maximum retraction and the other of maximum extraction, to allow the bottom to be stretched out and before the form, and that said optical sensor (18) is in a position such that its light beam them vertical intercepts the garter line (17) in the area stretched by said bow (7) and therefore outside and before the form.
  • the compressed air supplied by means of the connector (8) can advantageously be drawn from the same installation for the compression of the air with which each pantyhose sewing machine is equipped.
  • the rods (4) comprise a stop element (14) on the side opposite to that of the guide ring (3): said stop element (14) being intended to be pushed towards the inside of the arms (10) by a pusher (20), thereby causing the bow (7) to exit relative to the arms (10).
  • the operation is as follows.
  • said tensioning bow (7) is rigidly fixed to only one of the rods (4), to allow its actuation by acting on only one of its legs (71) and therefore making provision to equip only one of the arms (10) of the form (13) with said drive and guide means: the other arm of the form being simply pierced longitudinally to allow the sliding of the other leg of the bow (7) when the latter is extracted or retracted.
  • Attaching the arch (7) to one of the rods (4) has proven to be particularly advantageous for preventing the bow (7) from remaining in the extraction position by deforming into a rosette when the arms (10,30 ) of the form (13) are separated before sewing the tights.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
  • Socks And Pantyhose (AREA)
EP93830068A 1992-03-13 1993-02-24 Vorrichtung zum automatischen Positionieren von Strümpfen in einer Strumpfhosennähmaschine Expired - Lifetime EP0560735B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITFI920067A IT1259630B (it) 1992-03-13 1992-03-13 Dispositivo per il posizionamento automatico delle claze in macchina per cucire collants
ITFI920067 1992-03-13

Publications (2)

Publication Number Publication Date
EP0560735A1 true EP0560735A1 (de) 1993-09-15
EP0560735B1 EP0560735B1 (de) 1995-10-25

Family

ID=11350012

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93830068A Expired - Lifetime EP0560735B1 (de) 1992-03-13 1993-02-24 Vorrichtung zum automatischen Positionieren von Strümpfen in einer Strumpfhosennähmaschine

Country Status (7)

Country Link
US (1) US5309853A (de)
EP (1) EP0560735B1 (de)
JP (1) JP2542322B2 (de)
CA (1) CA2091532A1 (de)
DE (1) DE69300688T2 (de)
IT (1) IT1259630B (de)
MX (1) MX9301383A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0630999A1 (de) * 1993-06-25 1994-12-28 SOLIS S.r.l. Verfahren und Vorrichtung, um zwei schlauchförmige Produkte auf einer vorbestimmten Position auf einem entsprechenden Träger anzuordnen

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1262541B (it) * 1993-10-18 1996-07-02 Solis Srl Dispositivo per il posizionamento della porzione del piede di manufatti tubolari a maglia

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126134A (en) * 1964-03-24 Hose seam flattening device
US3197094A (en) * 1962-08-01 1965-07-27 Doctor E Fowler Power operated hosiery extension machine
US4192242A (en) * 1977-04-02 1980-03-11 Detexomat Machinery Limited Hosiery toe closers
US4374501A (en) * 1980-07-18 1983-02-22 Consolidated Foods Corporation Garment toe closing assembly

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03173597A (ja) * 1989-11-30 1991-07-26 Takatori Haitetsuku:Kk 股上縫製機におけるパンティストッキング生地の自動位置決装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126134A (en) * 1964-03-24 Hose seam flattening device
US3197094A (en) * 1962-08-01 1965-07-27 Doctor E Fowler Power operated hosiery extension machine
US4192242A (en) * 1977-04-02 1980-03-11 Detexomat Machinery Limited Hosiery toe closers
US4374501A (en) * 1980-07-18 1983-02-22 Consolidated Foods Corporation Garment toe closing assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0630999A1 (de) * 1993-06-25 1994-12-28 SOLIS S.r.l. Verfahren und Vorrichtung, um zwei schlauchförmige Produkte auf einer vorbestimmten Position auf einem entsprechenden Träger anzuordnen

Also Published As

Publication number Publication date
IT1259630B (it) 1996-03-25
ITFI920067A0 (it) 1992-03-13
JPH06205886A (ja) 1994-07-26
EP0560735B1 (de) 1995-10-25
JP2542322B2 (ja) 1996-10-09
ITFI920067A1 (it) 1993-09-13
DE69300688T2 (de) 1996-07-04
CA2091532A1 (en) 1993-09-14
DE69300688D1 (de) 1995-11-30
US5309853A (en) 1994-05-10
MX9301383A (es) 1994-08-31

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