FR2793782A1 - Semi=rigid polyvinyl chloride sheets, etc are separated from top of stack using suction cup gripping top sheet off centre and inclined to stack prior to moving away from stack - Google Patents
Semi=rigid polyvinyl chloride sheets, etc are separated from top of stack using suction cup gripping top sheet off centre and inclined to stack prior to moving away from stack Download PDFInfo
- Publication number
- FR2793782A1 FR2793782A1 FR9906418A FR9906418A FR2793782A1 FR 2793782 A1 FR2793782 A1 FR 2793782A1 FR 9906418 A FR9906418 A FR 9906418A FR 9906418 A FR9906418 A FR 9906418A FR 2793782 A1 FR2793782 A1 FR 2793782A1
- Authority
- FR
- France
- Prior art keywords
- suction cup
- stack
- top sheet
- topsheet
- unstacking
- 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
Links
- 229920000915 polyvinyl chloride Polymers 0.000 title 1
- 239000004800 polyvinyl chloride Substances 0.000 title 1
- 238000000034 method Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000013459 approach Methods 0.000 abstract description 4
- 238000005452 bending Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
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
- B65H3/00—Separating articles from piles
- B65H3/08—Separating articles from piles using pneumatic force
- B65H3/0808—Suction grippers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H3/00—Separating articles from piles
- B65H3/42—Separating articles from piles by two or more separators mounted for movement with, or relative to, rotary or oscillating bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2403/00—Power transmission; Driving means
- B65H2403/50—Driving mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2406/00—Means using fluid
- B65H2406/30—Suction means
- B65H2406/34—Suction grippers
- B65H2406/345—Rotary suction grippers
- B65H2406/3454—Rotary suction grippers performing oscillating movement during rotation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2555/00—Actuating means
- B65H2555/20—Actuating means angular
- B65H2555/24—Servomotors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Abstract
Description
PROCÉDÉ<B>DE</B> DÉPILAGE<B>DE</B> FEUILLES EMPILÉES<B>DANS UN</B> CHARGEUR. METHOD OF <B> DEPILING <B> OF </ B> STACKED SHEETS IN A </ B> CHARGER.
La présente invention concerne le domaine du dépilage de feuilles empilées dans un chargeur, en particulier de feuilles semi-rigides en PVC empilées dans un chargeur. The present invention relates to the field of unstacking stacked sheets in a loader, in particular semi-rigid sheets of PVC stacked in a loader.
on connaît dans l'état de la technique des dépileurs comportant un mécanisme d'entraînement d'une ventouse qui est alternativement approchée, mise en contact puis écartée de la pile de feuilles. La ventouse est plaquée sur la feuille supérieure de la pile, et entraîne ensuite la feuille supérieure pour l'éloigner de la pile avant de la déposer sur une autre zone de travail, par exemple sur une découpe transportée par un convoyeur<B>à</B> dépression. in the prior art are known unstackers having a drive mechanism of a suction cup which is alternately approximated, brought into contact and then removed from the stack of sheets. The suction cup is pressed onto the upper sheet of the stack, and then drives the upper sheet away from the stack before depositing it on another work area, for example on a cut conveyed by a conveyor <B> to < / B> depression.
Le brevet américain US5254071 décrit un dépileur fonctionnant selon ce principe. US5254071 discloses a destacker operating according to this principle.
Un tel dispositif n'est pas totalement satisfaisant. La cinématique de la ventouse produit un décollage initial d'une zone centrale de la feuille supérieure, qui se bombe légèrement, avant le décollage complet. Ce bombage provient du phénomène de collage des feuilles superposées, résultant notamment des forces électrostatiques se formant entre deux feuilles de matériaux isolants tels que du PVC. Le dépilage ne s'effectue pas de façon correcte et peut provoquer des dysfonctionnements du dépileur. L'objet de la présente invention est d'améliorer le dépilage de feuilles semi-rigides, en particulier de feuilles de PVC, empilées dans un chargeur. En particulier, le but de l'invention est d'éviter l'inconvénient du collage de deux feuilles consécutives provoquant un prélèvement de deux feuilles simultanément, ou provoquant la position incorrecte de la feuille consécutive<B>à</B> la feuille supérieure qui vient d'être prélevée. Such a device is not totally satisfactory. The kinematics of the suction cup produce an initial takeoff of a central zone of the upper sheet, which bombs slightly, before the full take-off. This bending is due to the phenomenon of bonding the superimposed sheets, resulting in particular electrostatic forces formed between two sheets of insulating materials such as PVC. Unstacking is not carried out correctly and may cause malfunctions of the unstacker. The object of the present invention is to improve the unstacking of semi-rigid sheets, in particular PVC sheets, stacked in a magazine. In particular, the object of the invention is to avoid the inconvenience of sticking two consecutive sheets causing a removal of two sheets simultaneously, or causing the incorrect position of the consecutive sheet <B> to </ B> the upper sheet which has just been taken.
<B>A</B> cet effet, l'invention concerne, dans son acception la plus générale, un procédé pour le dépilage de feuilles empilées dans un chargeur, comportant une étape de rapprochement d'une ventouse de la surface de la feuille supérieure de la pile, une étape de mise en contact de la ventouse avec la surface de ladite feuille supérieure et une étape d'éloignement de la ventouse après préhension de la feuille supérieure, caractérisé en ce que la ventouse est appliquée en une zone décentrée de la feuille supérieure, et en ce que ladite ventouse est inclinée, au début de l'étape d'éloignement, de façon<B>à</B> provoquer une déformation de la feuille supérieure produisant un décollage latéral préalablement au décollage total de la feuille supérieure. <B> A </ B> With this effect, the invention relates, in its most general sense, to a process for unstacking sheets stacked in a magazine, comprising a step of bringing a suction cup closer to the surface of the sheet. upper stack, a step of contacting the suction cup with the surface of said upper sheet and a step of moving away from the suction cup after gripping the topsheet, characterized in that the suction cup is applied in an off-center zone of the top sheet, and in that said suction cup is inclined, at the beginning of the removal step, so as to cause a deformation of the topsheet producing a lateral take-off prior to the total take-off of the top sheet.
Avantageusement, la ventouse est inclinée par basculement par rapport<B>à</B> la zone latérale de la ventouse la plus proche du centre de la feuille supérieure. Advantageously, the suction cup is inclined by tilting relative to the lateral area of the suction cup closest to the center of the topsheet.
Selon un mode de mise en #uvre préféré, la ventouse est approchée de la feuille supérieure selon une première trajectoire courbe sensiblement tangentielle avec la normale<B>à</B> la feuille supérieure, et en ce que la ventouse est éloignée, après contact avec la feuille supérieure, selon une courbe sensiblement symétrique<B>à</B> la première courbe, par rapport<B>à</B> un plan perpendiculaire<B>à</B> la surface de la feuille supérieure. According to a preferred embodiment, the suction cup is approached from the upper sheet in a first substantially tangential curved path with the normal <B> to </ B> the upper sheet, and in that the sucker is removed, after contact with the upper sheet, in a substantially symmetrical curve <B> at </ B> the first curve, relative to <B> at </ B> a plane perpendicular <B> to </ B> the surface of the top sheet .
Selon une variante particulière, la ventouse est inclinée, pendant l'étape d'éloignement, selon une trajectoire initiale correspondant sensiblement<B>à</B> la fin de la première courbe. L'invention concerne également un équipement pour le dépilage de feuille empilées comportant un plateau rotatif entraînant au moins un support d'une ventouse, caractérisé en ce que le support de la ventouse est formé par une bielle articulée par rapport<B>à</B> un axe de pivotement s'étendant perpendiculairement<B>à</B> une zone périphérique du plateau rotatif, ladite bielle articulée étant guidée par un bielle de guidage dont l'une des extrémité est guidée par une noix de guidage solidaire de l'axe de rotation de plateau rotatif, et dont l'autre extrémité est reliée<B>à</B> la bielle articulée par un pivot, ladite bielle de guidage étant mobile transversalement par rapport<B>à</B> la noix de guidage. According to a particular variant, the suction cup is inclined during the removal step, according to an initial trajectory corresponding substantially <B> to </ B> the end of the first curve. The invention also relates to an equipment for unstacking stacked sheets having a turntable driving at least one support of a suction cup, characterized in that the support of the suction cup is formed by a rod articulated relative to <B> to </ B> a pivot axis extending perpendicularly <B> to </ B> a peripheral zone of the turntable, said link rod being guided by a guide rod whose one end is guided by a guide nut integral with the rotatable turntable axis, and the other end of which is connected to the pivoted rod by a pivot, said guide rod being movable transversely relative to the guide nut.
L'invention sera mieux comprise<B>à</B> la lecture de la description qui suit, se référant aux dessins annexés où<B>:</B> la figure<B>1</B> représente une vue schématique de la cinématique de la ventouse d'un équipement selon l'invention<B>;</B> la figure 2 représente une vue schématique d'un équipement selon l'invention<B>;</B> La figure<B>1</B> représente la trajectoire de la ventouse pendant les étapes d'approche et d'éloignement de la ventouse. L'approche de la ventouse s'effectue selon une trajectoire courbe<B>(1)</B> qui rejoint la feuille supérieure (2) de façon tangentielle avec la normale<B>(3) à</B> la surface de la feuille supérieure (2). Le contact entre la ventouse (4) et la feuille supérieure (2) s'effectue en une zone décalée par rapport au centre de la feuille supérieure (2). The invention will be better understood by reading the description which follows, with reference to the accompanying drawings in which: <B> 1 </ B> represents a schematic view of the kinematics of the suction cup of an equipment according to the invention <B>; </ B> FIG. 2 represents a schematic view of an equipment according to the invention <B>; </ B> FIG. <B> 1 </ B> represents the trajectory of the suction cup during the steps of approach and removal of the suction cup. The approach of the suction cup follows a curved path <B> (1) </ B> which joins the upper sheet (2) tangentially with the normal <B> (3) to </ B> the surface of the upper sheet (2). The contact between the suction cup (4) and the upper sheet (2) is effected in a region offset from the center of the topsheet (2).
L'éloignement s'effectue ensuite selon une deuxième trajectoire courbe<B>(5)</B> sensiblement symétrique par rapport<B>à</B> un'plan perpendiculaire<B>à</B> la surface de la feuille (2)<B>.</B> La ventouse reste inclinée de telle sorte que le plan de contact <B>(6)</B> avec la surface de la feuille forme un dièdre et que le bord<B>(7)</B> disposé du côté de la zone de contact entre la ventouse (4) et la feuille (2) se décolle en premier. Ce décollage latéral provoque l'introduction progressive d'air entre la feuille supérieure (2) et la feuille suivante. on évite ainsi le prélèvement de deux feuilles restant collées, ou le déplacement inopportun de la feuille inférieure. The distance is then carried out along a second curved path <B> (5) </ B> substantially symmetrical with respect to <B> at </ B> a perpendicular plane <B> at </ B> the surface of the sheet (2) <B>. </ B> The suction cup remains inclined so that the plane of contact <B> (6) </ B> with the surface of the sheet forms a dihedral and that the edge <B> (7) </ B> disposed on the side of the contact area between the suction cup (4) and the sheet (2) comes off first. This lateral takeoff causes the gradual introduction of air between the upper sheet (2) and the next sheet. this avoids the removal of two sheets remaining glued, or the undesirable displacement of the lower sheet.
La figure 2 représente une vue schématique d'un équipement selon l'invention. Il comporte un plateau rotatif <B>(10)</B> tournant<B>à</B> une vitesse constante. Ce plateau principal <B>(10)</B> supporte trois supports de ventouses, dont un seul est représenté sur la figure 2. Chaque support de ventouse est formé par une bielle<B>(11)</B> solidaire du plateau rotatif<B>(10)</B> par l'intermédiaire d'un pivot (12). Ce pivot (12) s'étend perpendiculairement au plateau<B>(10),</B> et est fixé<B>à</B> proximité du bord dudit plateau. La bielle<B>(11)</B> supporte la ventouse (4) <B>à</B> l'extrémité opposée au pivot (12). Un pignon satellite (13)entraîne la rotation de la bielle (12) par l'intermédiaire d'une couronne crantée (14). FIG. 2 represents a schematic view of an equipment according to the invention. It has a turntable <B> (10) </ B> rotating <B> at a constant speed. This main plate <B> (10) </ B> supports three suction cup holders, only one of which is shown in FIG. 2. Each suction cup support is formed by a connecting rod <B> (11) </ B> integral with the turntable <B> (10) </ B> via a pivot (12). This pivot (12) extends perpendicularly to the plate <B> (10), </ B> and is fixed <B> to </ B> near the edge of said plate. The connecting rod <B> (11) </ B> supports the suction cup (4) <B> at </ B> the opposite end to the pivot (12). A planet gear (13) drives the rotation of the connecting rod (12) via a notched crown (14).
Le basculement de la bielle (12) est guidé par une bielle<B>(15)</B> dont l'une des extrémité<B>(16)</B> est guidée en translation par une douille<B>à</B> bille<B>(17)</B> solidaire de l'axe <B>(18)</B> du plateau<B>(10) .</B> L'autre extrémité<B>(19)</B> de la bielle<B>(15)</B> est reliée<B>à</B> la bielle articulée (12) par l'intermédiaire d'un pivot (20).The tilting of the connecting rod (12) is guided by a connecting rod <B> (15) </ B> of which one end <B> (16) </ B> is guided in translation by a sleeve <B> to <B> <B> (17) </ B> secured to the <B> (18) </ B> axis of the <B> (10) board. </ B> The other end <B> (19) </ B> of the rod <B> (15) </ B> is connected <B> to </ B> the articulated rod (12) via a pivot (20).
Claims (1)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9906418A FR2793782B1 (en) | 1999-05-20 | 1999-05-20 | METHOD AND EQUIPMENT FOR UNPILING SHEETS STACKED IN A LOADER |
FR9909115A FR2793783A1 (en) | 1999-05-20 | 1999-07-13 | Semi=rigid polyvinyl chloride sheets, etc are separated from top of stack using suction cup gripping top sheet off centre and inclined to stack prior to moving away from stack |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9906418A FR2793782B1 (en) | 1999-05-20 | 1999-05-20 | METHOD AND EQUIPMENT FOR UNPILING SHEETS STACKED IN A LOADER |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2793782A1 true FR2793782A1 (en) | 2000-11-24 |
FR2793782B1 FR2793782B1 (en) | 2002-11-29 |
Family
ID=9545809
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9906418A Expired - Fee Related FR2793782B1 (en) | 1999-05-20 | 1999-05-20 | METHOD AND EQUIPMENT FOR UNPILING SHEETS STACKED IN A LOADER |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2793782B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109160323A (en) * | 2018-10-23 | 2019-01-08 | 东旭集团有限公司 | A kind of feeding spaced papers separation method |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2487310A1 (en) * | 1980-07-26 | 1982-01-29 | Weiersmueller Verpacksyst | Continuous pick=up mechanism for foils - has suction heads carried on rods rotated via levers, radial arms, and gears to move tangentially to foils |
EP0381382A2 (en) * | 1989-01-30 | 1990-08-08 | Brother Kogyo Kabushiki Kaisha | Sheet feeding mechanism having dust preventing means and method for cleaning the sheet feeding mechanism |
US5254071A (en) * | 1990-07-20 | 1993-10-19 | Societe Anonyme Etudes Services Automatismes Techniques Esatec | Rotary feeder for the accurate placing of sheet elements on flat supports |
DE19522741A1 (en) * | 1995-06-22 | 1997-01-02 | Kodak Ag | Method of removing sheets from stack and feeding them via conveying rollers |
-
1999
- 1999-05-20 FR FR9906418A patent/FR2793782B1/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2487310A1 (en) * | 1980-07-26 | 1982-01-29 | Weiersmueller Verpacksyst | Continuous pick=up mechanism for foils - has suction heads carried on rods rotated via levers, radial arms, and gears to move tangentially to foils |
EP0381382A2 (en) * | 1989-01-30 | 1990-08-08 | Brother Kogyo Kabushiki Kaisha | Sheet feeding mechanism having dust preventing means and method for cleaning the sheet feeding mechanism |
US5254071A (en) * | 1990-07-20 | 1993-10-19 | Societe Anonyme Etudes Services Automatismes Techniques Esatec | Rotary feeder for the accurate placing of sheet elements on flat supports |
DE19522741A1 (en) * | 1995-06-22 | 1997-01-02 | Kodak Ag | Method of removing sheets from stack and feeding them via conveying rollers |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109160323A (en) * | 2018-10-23 | 2019-01-08 | 东旭集团有限公司 | A kind of feeding spaced papers separation method |
Also Published As
Publication number | Publication date |
---|---|
FR2793782B1 (en) | 2002-11-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0467817B1 (en) | Rotative sheet feeder for the accurate positioning of sheet-like elements on flat supports | |
JP3202312B2 (en) | Device for attaching sheet-like members | |
FR2524446A1 (en) | DEVICE FOR REMOVING A SHEET FROM A BATTERY | |
FR2793782A1 (en) | Semi=rigid polyvinyl chloride sheets, etc are separated from top of stack using suction cup gripping top sheet off centre and inclined to stack prior to moving away from stack | |
CA2342741C (en) | Method for unstacking sheets stacked in a feeder | |
EP1182138B1 (en) | Device for assembling products like compact disc cases | |
FR2793783A1 (en) | Semi=rigid polyvinyl chloride sheets, etc are separated from top of stack using suction cup gripping top sheet off centre and inclined to stack prior to moving away from stack | |
JPH1135150A (en) | Plate glass insertion device | |
EP0069017A1 (en) | Rotary die cutting machine | |
EP3820265A1 (en) | Method and device for cutting a radial electronic component | |
CA1320226C (en) | Flat object pile handling device | |
FR2595624A1 (en) | TRANSMITTER DRUM FOR SHEET TRANSFER IN PRINTING MACHINE | |
EP0647927A1 (en) | Automatic object dispenser | |
EP0445029B1 (en) | Paper sheet feeding device with pressing member | |
CN220281778U (en) | Packing carton buckle closure anchor clamps | |
EP0019981B1 (en) | Valve inserting machine for tubeless-tyre rims | |
JP2587045B2 (en) | Method and apparatus for automatically separating and supplying thin plates | |
JP2691164B2 (en) | Log bark stripping device | |
CN217047491U (en) | Film sticking jig | |
CA2061863C (en) | Apparatus for cutting adhesive tape roll stocks | |
EP0668226B1 (en) | Instacking device for a pile of cards | |
BE1002889A4 (en) | Improvements to devices feeding individual sheets from a pile | |
JPH07266383A (en) | Separating method of loss synthetic resin from lead frame for electronic part, and separation device using the method | |
JPS6341806B2 (en) | ||
EP0267844A2 (en) | Apparatus for the continuous stripping of plastic films on a board, especially a printed circuit one |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |
Effective date: 20110131 |