FR2992249A1 - Turner for turning over small-sized sheet blanks prior to its introduction into e.g. press cutting, has support and blank swiveling around axis between horizontal and vertical positions by force of gravity exerted by support and blank - Google Patents

Turner for turning over small-sized sheet blanks prior to its introduction into e.g. press cutting, has support and blank swiveling around axis between horizontal and vertical positions by force of gravity exerted by support and blank Download PDF

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Publication number
FR2992249A1
FR2992249A1 FR1255865A FR1255865A FR2992249A1 FR 2992249 A1 FR2992249 A1 FR 2992249A1 FR 1255865 A FR1255865 A FR 1255865A FR 1255865 A FR1255865 A FR 1255865A FR 2992249 A1 FR2992249 A1 FR 2992249A1
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FR
France
Prior art keywords
blank
support
turner
horizontal
turner according
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.)
Withdrawn
Application number
FR1255865A
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French (fr)
Inventor
Adriano Taboas
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.)
PSA Automobiles SA
Original Assignee
Peugeot Citroen Automobiles SA
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Filing date
Publication date
Application filed by Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Priority to FR1255865A priority Critical patent/FR2992249A1/en
Publication of FR2992249A1 publication Critical patent/FR2992249A1/en
Withdrawn legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02Advancing work in relation to the stroke of the die or tool
    • B21D43/04Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/14Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by turning devices, e.g. turn-tables
    • B21D43/145Turnover devices, i.e. by turning about a substantially horizontal axis
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02Advancing work in relation to the stroke of the die or tool
    • B21D43/16Advancing work in relation to the stroke of the die or tool by gravity, e.g. chutes

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manipulator (AREA)

Abstract

The turner has a fixed frame (1) on which a support (2) is mounted in a swivelable manner according to a horizontal axis (X-X'). The support is intended to receive a blank (3). The support and the blank swivel around the horizontal axis between a horizontal position and a vertical position by force of gravity exerted by the support and the blank. Center of gravity of the support and the blank are shifted relative to the axis when the blank is in position on the support. A biasing unit biases swiveling of the support towards the horizontal position after removal of the blank from the support.

Description

RETOURNEUR DE FLANS EN TOLE DE PETITE TAILLE La présente invention concerne un retourneur de flan qui permet de retourner 5 un flan avant de le présenter dans une presse de découpe ou d'emboutissage. Un tel retournement des flans est effectué dans le cas de la réalisation de pièces symétriques telles que des ailes ou des portes droites et gauches d'un véhicule automobile, pour éviter d'avoir à découper des pièces gauches et droites avec deux outils spécifiques. 10 Ainsi on retourne la moitié des flans et on coupe tous les flans avec le même outil. Les retourneurs de flans utilisés actuellement ne permettent pas de retourner des flans de petite taille, en raison des contraintes de construction de ces retourneurs. 15 Le but de la présente invention est de remédier à cet inconvénient. Ce but est atteint, selon l'invention grâce à un retourneur de flans en tôle, caractérisé en ce qu'il comprend un bâti fixe sur lequel est monté pivotant suivant un axe horizontal, un support destiné à recevoir un flan, l'ensemble support et flan disposé sur ce dernier pouvant pivoter autour dudit axe horizontal entre une 20 première position sensiblement horizontale et une seconde position sensiblement verticale, grâce à la force de gravité exercée par ledit ensemble support et flan. Ainsi, ce retourneur de flans fonctionne par gravité. Lorsqu'un robot dépose un flan sur le support en position sensiblement horizontale, ce support pivote vers le bas du fait de la gravité, en retournant le flan 25 jusqu'à une position sensiblement verticale dans laquelle un robot enlève le flan du support pour le mettre sur une pile de flans destinés à être découpés. Dans une version préférée de l'invention, lorsque le flan est en position sur ledit support, le centre de gravité de l'ensemble support et flan est décalé par rapport audit axe horizontal. 30 Ce décalage permet au support de pivoter. De préférence, le retourneur de flans comprend des moyens de rappel pour rappeler le pivotement du support vers ladite première position, après enlèvement du flan dudit support.BACKGROUND OF THE INVENTION The present invention relates to a blank turner for returning a blank before presenting it in a cutting or stamping press. Such a reversal of blanks is performed in the case of the realization of symmetrical parts such as wings or right and left doors of a motor vehicle, to avoid having to cut left and right parts with two specific tools. Thus we return half of the blanks and cut all the blanks with the same tool. Currently used blank turners do not allow flanks of small size to be returned due to the construction constraints of these turners. The object of the present invention is to overcome this disadvantage. This object is achieved, according to the invention by means of a sheet blank turner, characterized in that it comprises a fixed frame on which is pivotally mounted along a horizontal axis, a support intended to receive a blank, the support assembly and a blank disposed thereon rotatable about said horizontal axis between a first substantially horizontal position and a second substantially vertical position, due to the force of gravity exerted by said support and blank assembly. Thus, this blank turner works by gravity. When a robot lays a blank on the support in a substantially horizontal position, this support pivots downwards due to gravity, by returning the blank 25 to a substantially vertical position in which a robot removes the blank from the support for the put on a stack of blanks to be cut. In a preferred version of the invention, when the blank is in position on said support, the center of gravity of the support and blank assembly is offset with respect to said horizontal axis. This offset allows the support to rotate. Preferably, the blank turner comprises return means for returning the pivoting of the support towards said first position, after removal of the blank of said support.

Ces moyens de rappel peuvent comprendre un contrepoids qui maintient le support dans ladite première position, en l'absence dudit flan sur ledit support. Dans un mode de réalisation préféré de l'invention, le support comprend une barre rigide dont les deux extrémités opposés sont chacune montées pivotantes par rapport au bâti, ledit contrepoids étant suspendu à une tige solidaire de ladite barre. Le support peut comprendre deux fers plats fixés sur ladite barre pour supporter ledit flan. Selon une particularité avantageuse de l'invention, dans ladite première position, le support est situé dans un plan légèrement incliné par rapport à un plan horizontal et dans ladite seconde position, le support est situé dans un plan légèrement incliné par rapport à un plan vertical. Selon d'autres particularités avantageuses de l'invention : - le bord du support qui est situé le plus bas dans ladite première position comprend une butée pour empêcher le glissement du flan disposé sur le support ; - le bâti comprend des moyens pour limiter et amortir la fin de course de pivotement du support entre la première et la seconde positions et entre ces seconde et première positions ; - le bâti comprend en outre un détecteur pour détecter la première position du flan. D'autres particularités et avantages de l'invention apparaîtront encore tout au long de la description ci-après. Aux dessins annexés, donnés à titre d'exemples, non limitatifs : - la figure 1 est une vue schématique frontale d'un retourneur de flans selon l'invention, - la figure 2 est une vue latérale du retourneur, suivant la flèche A de la figure 1 Comme montré sur les figures 1 et 2, le retourneur de flans en tôle, selon l'invention, comprend un bâti fixe 1 sur lequel est monté pivotant suivant un axe horizontal X-X' un support 2 destiné à recevoir (voir figure 2) un flan 3. Comme indiqué sur la figure 2, l'ensemble support 2 et flan 3 disposé sur ce dernier peut pivoter autour de l'axe horizontal X-X' entre une première position sensiblement horizontale et une seconde position (représentée en pointillés) sensiblement verticale, grâce à la force de gravité exercée par l'ensemble flan 3 et support 2. Lorsque le flan 3 est en position sur le support 2, le centre de gravité de l'ensemble support 2 et flan 3 est décalé par rapport à l'axe horizontal X-X'. Le retourneur de flans, selon l'invention, comprend également des moyens de rappel pour rappeler le pivotement du support 2 vers la première position, après enlèvement du flan 3 du support 2. Dans l'exemple représenté, ces moyens de rappel comprennent un contrepoids 4 qui maintient le support 2 dans la première position, en l'absence du flan 3 sur le support 2. Comme montré notamment sur la figure 1, le support 2 comprend une barre rigide 5 dont les deux extrémités opposés sont chacune montées pivotantes par rapport au bâti 1.These return means may comprise a counterweight which holds the support in said first position, in the absence of said blank on said support. In a preferred embodiment of the invention, the support comprises a rigid bar whose two opposite ends are each pivotally mounted relative to the frame, said counterweight being suspended from a rod integral with said bar. The support may comprise two flat bars fixed on said bar to support said blank. According to an advantageous feature of the invention, in said first position, the support is situated in a plane slightly inclined with respect to a horizontal plane and in said second position, the support is situated in a plane slightly inclined with respect to a vertical plane. . According to other advantageous features of the invention: - the edge of the support which is located lowest in said first position comprises a stop to prevent slippage of the blank disposed on the support; the frame comprises means for limiting and damping the end of the pivoting stroke of the support between the first and the second positions and between these second and first positions; - The frame further comprises a detector for detecting the first position of the blank. Other features and advantages of the invention will become apparent throughout the description below. In the accompanying drawings, given by way of nonlimiting example: FIG. 1 is a front schematic view of a blank turner according to the invention; FIG. 2 is a side view of the turner, according to arrow A of FIG. FIG. 1 As shown in FIGS. 1 and 2, the sheet blank turner, according to the invention, comprises a fixed frame 1 on which is pivotally mounted along a horizontal axis XX 'a support 2 intended to receive (see FIG. ) As shown in Figure 2, the support assembly 2 and blank 3 disposed on the latter can pivot about the horizontal axis XX 'between a first substantially horizontal position and a second position (shown in dashed lines) substantially vertical, thanks to the force of gravity exerted by the blank assembly 3 and support 2. When the blank 3 is in position on the support 2, the center of gravity of the support assembly 2 and blank 3 is offset from the horizontal axis X-X '. The blank turner, according to the invention, also comprises biasing means to recall the pivoting of the support 2 to the first position, after removal of the blank 3 of the support 2. In the example shown, these return means comprise a counterweight 4 which holds the support 2 in the first position, in the absence of the blank 3 on the support 2. As shown in particular in Figure 1, the support 2 comprises a rigid bar 5 whose two opposite ends are each pivotally mounted relative on the frame 1.

Ce bâti comprend deux montants 6 fixés sur une base 7 qui est elle-même fixée sur une table non représentée. Par ailleurs, le contrepoids 4 est suspendu à une tige 8 solidaire de la barre 5. Les figures 1 et 2 montrent également que le support 2 comprend en outre deux fers plats 9 fixés par soudure sur la barre 5 pour supporter le flan 3. Comme indiqué sur la figure 2, dans la première position, le support 2 est situé dans un plan légèrement incliné vers la gauche par rapport à un plan horizontal et dans la seconde position (en pointillés), le support 2 est situé dans un plan légèrement incliné par rapport à un plan vertical.This frame comprises two uprights 6 fixed on a base 7 which is itself fixed on a table not shown. Furthermore, the counterweight 4 is suspended from a rod 8 integral with the bar 5. Figures 1 and 2 also show that the support 2 further comprises two flat irons 9 fixed by welding on the bar 5 to support the blank 3. As indicated in Figure 2, in the first position, the support 2 is located in a plane slightly inclined to the left relative to a horizontal plane and in the second position (in dashed lines), the support 2 is located in a slightly inclined plane relative to a vertical plane.

De plus, le bord du support 2 qui est situé le plus bas dans la première position comprend une butée 10 pour empêcher le glissement du flan 3 disposé sur le support 2. Cette butée 10 est constituée par un bord plié réalisé sur chacun des fers plats 9.In addition, the edge of the support 2 which is located lowest in the first position comprises a stop 10 to prevent the sliding of the blank 3 disposed on the support 2. This stop 10 is constituted by a folded edge formed on each of the flat irons 9.

Par ailleurs, le bâti 1 comprend des moyens 11, 12 pour limiter et amortir la fin de course de pivotement du support 2 entre la première et la seconde positions et entre ces seconde et première positions. Ces moyens peuvent être constitués par des blocs en matière élastique.Furthermore, the frame 1 comprises means 11, 12 for limiting and damping the end of the pivoting stroke of the support 2 between the first and the second positions and between these second and first positions. These means may be constituted by blocks of elastic material.

Le bâti 1 comprend en outre un détecteur 13 pour détecter la première position du flan 3 dont la fonction sera expliquée ci-après. Le retourneur de flans en tôle que l'on vient de décrire fonctionne comme suit.The frame 1 further comprises a detector 13 for detecting the first position of the blank 3 whose function will be explained below. The sheet blank turner which has just been described operates as follows.

Le détecteur 13 détecte la première position du support 2 telle que représentée en traits pleins sur la figure 2 et un signal est envoyé à un robot pour indiquer à celui-ci que le support 2 est prêt à recevoir un flan 3. Après dépôt d'un flan 3 sur le support 2, celui-ci pivote par gravité vers le bas, dans le sens de la flèche F, en tournant autour de l'axe X-X', jusqu'à la position indiquée en pointillés sur la figure 2. Dans cette position, le support 2 prend appui sur la butée de fin de course 12. Lors du pivotement du support 2, le contrepoids 4 pivote en même temps vers le haut, dans le sens de la flèche F1, montrée sur la figure 2.The detector 13 detects the first position of the support 2 as represented in solid lines in FIG. 2 and a signal is sent to a robot to indicate to it that the support 2 is ready to receive a blank 3. After filing a blank 3 on the support 2, it pivots by gravity downwards, in the direction of arrow F, by turning about the axis X-X ', to the position shown in dashed lines in FIG. 2 In this position, the support 2 is supported on the limit stop 12. During the pivoting of the support 2, the counterweight 4 pivots at the same time upwards, in the direction of the arrow F1, shown in FIG. .

Dans cette seconde position, le flan 3 et le support 2 sont presque verticaux et le contrepoids 4 est situé dans un plan qui est presque horizontal. Dans cette position, le robot peut enlever le flan 3 du support 2 et le mettre sur une pile en position retournée. Après enlèvement du flan 3, sous l'effet de la gravité exercée par le contrepoids 4, le support 2 pivote en sens inverse et reprend la première position indiquée en traits pleins sur la figure 2. Cette position est maintenue grâce à la butée 11 et est détectée par le détecteur 13 pour signaler au robot que le support 2 est prêt à recevoir un nouveau flan 3.In this second position, the blank 3 and the support 2 are almost vertical and the counterweight 4 is located in a plane which is almost horizontal. In this position, the robot can remove the blank 3 from the support 2 and put it on a stack in the inverted position. After removing the blank 3, under the effect of the gravity exerted by the counterweight 4, the support 2 pivots in the opposite direction and returns to the first position indicated in solid lines in FIG. 2. This position is maintained thanks to the stop 11 and is detected by the detector 13 to signal to the robot that the support 2 is ready to receive a new blank 3.

Claims (10)

REVENDICATIONS1. Retourneur de flans en tôle, caractérisé en ce qu'il comprend un bâti fixe (1) sur lequel est monté pivotant suivant un axe horizontal (X-X'), un support (2) destiné à recevoir un flan (3), l'ensemble support (2) et flan (3) disposé sur ce dernier pouvant pivoter autour dudit axe (X-X') horizontal entre une première position sensiblement horizontale et une seconde position sensiblement verticale, grâce à la force de gravité exercée par ledit ensemble support (2) et flan (3).REVENDICATIONS1. Sheet blank turner, characterized in that it comprises a fixed frame (1) on which is pivotally mounted along a horizontal axis (X-X '), a support (2) intended to receive a blank (3), l support assembly (2) and blank (3) disposed on the latter pivotable about said horizontal axis (X-X ') between a first substantially horizontal position and a second substantially vertical position, thanks to the force of gravity exerted by said assembly support (2) and blank (3). 2. Retourneur de flans selon la revendication 1, caractérisé en ce que, lorsque le flan (3) est en position sur ledit support (2), le centre de gravité de l'ensemble support (2) et flan (3) est décalé par rapport audit axe horizontal (X-X').2. Blank turner according to claim 1, characterized in that, when the blank (3) is in position on said support (2), the center of gravity of the support assembly (2) and blank (3) is shifted with respect to said horizontal axis (X-X '). 3. Retourneur de flans selon l'une des revendications 1 ou 2, caractérisé en ce qu'il comprend des moyens de rappel pour rappeler le pivotement du support (2) vers ladite première position, après enlèvement du flan (3) dudit support (2).3. blank turner according to one of claims 1 or 2, characterized in that it comprises biasing means for biasing the pivoting of the support (2) to said first position, after removal of the blank (3) of said support ( 2). 4. Retourneur de flans selon la revendication 3, caractérisé en ce que lesdits moyens de rappel comprennent un contrepoids (4) qui maintient le support (2) dans ladite première position, en l'absence dudit flan (3) sur ledit support (2).4. A blank turner according to claim 3, characterized in that said biasing means comprise a counterweight (4) which holds the support (2) in said first position, in the absence of said blank (3) on said support (2). ). 5. Retourneur de flans selon la revendication 4, caractérisé en ce que le support (2) comprend une barre rigide (5) dont les deux extrémités opposés sont chacune montées pivotantes par rapport au bâti (1), ledit contrepoids (4) étant suspendu à une tige (8) solidaire de ladite barre (5).5. Blank turner according to claim 4, characterized in that the support (2) comprises a rigid bar (5) whose two opposite ends are each pivotally mounted relative to the frame (1), said counterweight (4) being suspended a rod (8) integral with said bar (5). 6. Retourneur de flans selon la revendication 5, caractérisé en ce que le support (2) comprend en outre deux fers plats (9) fixés sur ladite barre (5) pour supporter ledit flan (3).6. Blank turner according to claim 5, characterized in that the support (2) further comprises two flat bars (9) fixed on said bar (5) for supporting said blank (3). 7. Retourneur de flans selon l'une des revendications 1 à 6, caractérisé en ce que dans ladite première position, le support (2) est situé dans un plan légèrement incliné par rapport à un plan horizontal et dans ladite seconde position, le support (2) est situé dans un plan légèrement incliné par rapport à un plan vertical.7. Blank turner according to one of claims 1 to 6, characterized in that in said first position, the support (2) is located in a plane slightly inclined relative to a horizontal plane and in said second position, the support (2) is located in a plane slightly inclined with respect to a vertical plane. 8. Retourneur de flans selon la revendication 7, caractérisé en ce que le bord du support (2) qui est situé le plus bas dans ladite première positioncomprend une butée (10) pour empêcher le glissement du flan (3) disposé sur le support (2).8. Blank turner according to claim 7, characterized in that the edge of the support (2) which is located lowest in said first positioncomprises an abutment (10) to prevent sliding of the blank (3) disposed on the support ( 2). 9. Retourneur de flans selon l'une des revendications 1 à 8, caractérisé en ce que le bâti (1) comprend des moyens (11, 12) pour limiter et amortir la fin de course de pivotement du support (2) entre la première et la seconde positions et entre ces seconde et première positions.9. Blank turner according to one of claims 1 to 8, characterized in that the frame (1) comprises means (11, 12) for limiting and damping the end of the pivoting stroke of the support (2) between the first and the second positions and between these second and first positions. 10. Retourneur de flans selon l'une des revendications 1 à 9, caractérisé en ce que le bâti (1) comprend en outre un détecteur (13) pour détecter la première position du flan (3).10. Blank turner according to one of claims 1 to 9, characterized in that the frame (1) further comprises a detector (13) for detecting the first position of the blank (3).
FR1255865A 2012-06-21 2012-06-21 Turner for turning over small-sized sheet blanks prior to its introduction into e.g. press cutting, has support and blank swiveling around axis between horizontal and vertical positions by force of gravity exerted by support and blank Withdrawn FR2992249A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1255865A FR2992249A1 (en) 2012-06-21 2012-06-21 Turner for turning over small-sized sheet blanks prior to its introduction into e.g. press cutting, has support and blank swiveling around axis between horizontal and vertical positions by force of gravity exerted by support and blank

Applications Claiming Priority (1)

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FR1255865A FR2992249A1 (en) 2012-06-21 2012-06-21 Turner for turning over small-sized sheet blanks prior to its introduction into e.g. press cutting, has support and blank swiveling around axis between horizontal and vertical positions by force of gravity exerted by support and blank

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FR1255865A Withdrawn FR2992249A1 (en) 2012-06-21 2012-06-21 Turner for turning over small-sized sheet blanks prior to its introduction into e.g. press cutting, has support and blank swiveling around axis between horizontal and vertical positions by force of gravity exerted by support and blank

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107570621A (en) * 2017-10-30 2018-01-12 成都航空职业技术学院 A kind of swing type turning device for automobile body symmetrical member
FR3102689A1 (en) 2019-10-30 2021-05-07 Psa Automobiles Sa STORAGE PALLET FOR A BLANK RETURNING DEVICE, INCLUDING CROSSERS WITH PLASTIC PROFILES

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63212022A (en) * 1987-02-26 1988-09-05 Honda Motor Co Ltd Transfer device for thin steel plate stock
JPH06269876A (en) * 1993-03-19 1994-09-27 Honda Motor Co Ltd Device for reversing press left material

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63212022A (en) * 1987-02-26 1988-09-05 Honda Motor Co Ltd Transfer device for thin steel plate stock
JPH06269876A (en) * 1993-03-19 1994-09-27 Honda Motor Co Ltd Device for reversing press left material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107570621A (en) * 2017-10-30 2018-01-12 成都航空职业技术学院 A kind of swing type turning device for automobile body symmetrical member
CN107570621B (en) * 2017-10-30 2023-11-24 成都航空职业技术学院 Swing type turnover device for symmetrical parts of automobile body
FR3102689A1 (en) 2019-10-30 2021-05-07 Psa Automobiles Sa STORAGE PALLET FOR A BLANK RETURNING DEVICE, INCLUDING CROSSERS WITH PLASTIC PROFILES

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