EP0560735B1 - Dispositif pour le positionnement automatique des bas dans une machine pour coudre les collants - Google Patents

Dispositif pour le positionnement automatique des bas dans une machine pour coudre les collants Download PDF

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Publication number
EP0560735B1
EP0560735B1 EP93830068A EP93830068A EP0560735B1 EP 0560735 B1 EP0560735 B1 EP 0560735B1 EP 93830068 A EP93830068 A EP 93830068A EP 93830068 A EP93830068 A EP 93830068A EP 0560735 B1 EP0560735 B1 EP 0560735B1
Authority
EP
European Patent Office
Prior art keywords
bow
shaft
arms
arm
tightening
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
EP93830068A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0560735A1 (fr
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/fr
Application granted granted Critical
Publication of EP0560735B1 publication Critical patent/EP0560735B1/fr
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.
  • two stockings are cut out in an appropriate manner longitudinally from the open end, that is to say from the elastic edge of the body of the stocking, up to a predetermined distance from the garter line, which separates the body from the leg, and, successively, the juxtaposed edges of the two stockings thus cut are sewn together.
  • 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. It follows that, to carry out said seam with the necessary precision, it is necessary that the line of garter is clearly detected.
  • 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 bottoms in order for the garter line to be clearly detected by said sensors, it is necessary for the bottoms to be arranged in correspondence with the aforementioned sensors in the extended position, that is to say without having any folds.
  • 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 reduce the cutting and sewing times of the stockings subsequently, 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.
  • document US-A-3,197,094 describes a machine for stretching the stockings in order to improve the finish of the joint placed at the level of the toes and to allow inspection, comprising a shape having a passage in which a rod slides.
  • 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 that it is possible to obtain the tensioning 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; that the time to produce 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, to the benefit of the precision in the detection of the garter lines and, consequently , for 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 represent 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 a optical sensor (18) for detecting 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 ) made with a nylon thread and which is coplanar with the arms (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 shape, and that said optical sensor (18) is in a position such that its vertical light beam intercepts the garter line (17) in the area stretched by said bow (7) and therefore outside and before the form.
  • 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. After the bottom (16) has been threaded around the arms (10) and compressed air is sent inside the tubes (2) to the tension bow (7) of a shape (13) (See Fig. 1) through the fittings (8), and the pressure exerted by compressed air on the bases (5) of the drilled rods (4) causes them to move forward, overcoming the resistance of the springs (6). As a result, the tensioning bow (7) is forced out of the arms (10) of the form (13) and the bottom area which is astride the garter line (17) is widened, this is that is, stretched, eliminating the folds in order to allow the optical sensor (18) to clearly detect the line of the garter (17).
  • 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 in 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 Dispositif pour le positionnement automatique des bas dans une machine pour coudre les collants Expired - Lifetime EP0560735B1 (fr)

Applications Claiming Priority (2)

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

Publications (2)

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

Family

ID=11350012

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93830068A Expired - Lifetime EP0560735B1 (fr) 1992-03-13 1993-02-24 Dispositif pour le positionnement automatique des bas dans une machine pour coudre les collants

Country Status (7)

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

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1265876B1 (it) * 1993-06-25 1996-12-12 Solis Srl Metodo e dispositivo per disporre due manufatti tubolari in una posizione prestabilita su di un corrispondente supporto
IT1262541B (it) * 1993-10-18 1996-07-02 Solis Srl Dispositivo per il posizionamento della porzione del piede di manufatti tubolari a maglia

Family Cites Families (5)

* 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
GB1577758A (en) * 1977-04-02 1980-10-29 Detexomat Machinery Ltd Garment manufacture
US4374501A (en) * 1980-07-18 1983-02-22 Consolidated Foods Corporation Garment toe closing assembly
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

Also Published As

Publication number Publication date
JP2542322B2 (ja) 1996-10-09
DE69300688T2 (de) 1996-07-04
JPH06205886A (ja) 1994-07-26
MX9301383A (es) 1994-08-31
IT1259630B (it) 1996-03-25
ITFI920067A1 (it) 1993-09-13
ITFI920067A0 (it) 1992-03-13
EP0560735A1 (fr) 1993-09-15
CA2091532A1 (en) 1993-09-14
US5309853A (en) 1994-05-10
DE69300688D1 (de) 1995-11-30

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