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EP2844462B1 - Method for adjusting the radial clearance between two tools, embossing device and folder-gluer equipped therewith - Google Patents

Method for adjusting the radial clearance between two tools, embossing device and folder-gluer equipped therewith Download PDF

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Publication number
EP2844462B1
EP2844462B1 EP13719385.0A EP13719385A EP2844462B1 EP 2844462 B1 EP2844462 B1 EP 2844462B1 EP 13719385 A EP13719385 A EP 13719385A EP 2844462 B1 EP2844462 B1 EP 2844462B1
Authority
EP
European Patent Office
Prior art keywords
tool
armature
embossing
hook
forms
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.)
Active
Application number
EP13719385.0A
Other languages
German (de)
French (fr)
Other versions
EP2844462A1 (en
Inventor
Christophe CARRON
Christophe STEINER
Roberto Valterio
Dieudonné NGOY-MUVUMBU
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.)
Bobst Mex SA
Original Assignee
Bobst Mex SA
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 Bobst Mex SA filed Critical Bobst Mex SA
Priority to EP13719385.0A priority Critical patent/EP2844462B1/en
Publication of EP2844462A1 publication Critical patent/EP2844462A1/en
Application granted granted Critical
Publication of EP2844462B1 publication Critical patent/EP2844462B1/en
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Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/07—Embossing, i.e. producing impressions formed by locally deep-drawing, e.g. using rolls provided with complementary profiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/60—Uniting opposed surfaces or edges; Taping
    • B31B50/62—Uniting opposed surfaces or edges; Taping by adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/32—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for printing in Braille or with keyboards specially adapted for use by blind or disabled persons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/38—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for embossing, e.g. for making matrices for stereotypes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74—Auxiliary operations
    • B31B50/88—Printing; Embossing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00—Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07—Embossing
    • B31F2201/0707—Embossing by tools working continuously
    • B31F2201/0715—The tools being rollers
    • B31F2201/0753—Roller supporting, positioning, driving means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49716—Converting

Definitions

  • the present invention relates to a method for adjusting the radial gap existing between two rotary cylindrical tools belonging to an embossing device.
  • the invention also relates to an embossing device having two rotary cylindrical tools, whose radial gap is adjustable.
  • the invention relates to a folder-gluer equipped with an embossing device with two rotary cylindrical tools.
  • a folder-gluer comprises a series of modules and stations, each comprising functional arrangements. The number of modules varies according to the complexity of the manufacturing operations required by the type of box chosen.
  • the folder-gluer is equipped with a feeder feeding the machine cutting by cutting from a stack, an alignment module, a breaker precuring the non-longitudinal folds, folders with hooks which bend the front legs and the rear legs of the cutting, a sizing station, a folder for folding the longitudinal folds of the blank, a presser that compresses all the folds and deposits the boxes in sheet, and a receiving module that receives the boxes while maintaining them pressed to allow the glue to dry.
  • the conveying of cuts from one station to another in a substantially flat and horizontal trajectory is carried out using belt conveyors which, by friction, grip the cuts between a lower conveyor and an upper conveyor.
  • the lower conveyor is provided with lower belts and the upper conveyor is provided with either upper belts or upper support rollers.
  • Braille characters are embossed on one surface of the box to make appear points in relief or protuberances allowing a tactile reading of the messages.
  • the embossing of braille characters is done by means of a device mounted in an embossing module, the latter being installed in the folder-gluer.
  • the device comprises two rotary embossing tools, a male embossing tool cooperating with a female embossing tool, mounted on either side of the plane defined by the scrolling of the cuts along their path.
  • the ease and speed with which a visually impaired person reads the embossed message depends on the size, shape and regularity of Braille characters on the surface of the box. Braille characters should be embossed without burrs and have a certain height. The quality of the box thus obtained also depends on the quality of the embossing of Braille characters.
  • the document US 2012'053'034 discloses a module with a braille character embossing device in a folder-gluer comprising two structures.
  • a transverse upper structure carries cassettes with an upper embossing tool and a lower transverse structure carries cassettes with a lower embossing tool.
  • the lower structure is held at the front and back of the module.
  • the upper structure pivots relative to the lower structure through a transverse pivot axis located on the upstream side.
  • the height of the embossing is adjustable.
  • the distance between the two tools is first set by two front and rear cylinders.
  • the cylinders are secured to the lower structure and pull the upper structure by rotating it towards the lower structure.
  • a fine adjustment mechanism of the embossing height is also provided.
  • An upper abutment secured to the upper structure comes against a lower abutment integral with the lower structure.
  • the lower stop is fixed and the upper stop is adjustable over a desired distance.
  • the upper stop is supported on the lower stop and pushes the upper structure by pivoting it in the opposite direction of the lower structure.
  • the jacks come to pull on a front and rear edge of the upper structure, which causes deformations.
  • the fine adjustment mechanism is mounted on the upper structure which is pivotally movable.
  • the fine adjustment system acts in compression, upper stop against lower stop. All efforts are therefore taken up by the upper structure, resulting in mechanical stresses in the transverse pivot axis. Due to the traversing slenderness of the upper structure, the stacking of the various tolerance fields and the clearances in the fine adjustment control mechanism, it is not possible to obtain the same adjustment between the front and the back side of the upper structure. Finally, the adjustment obtained is very variable throughout the upper transverse structure between the front side and the rear side of the upper structure.
  • the document EP-1'932'657 presents a device for embossing braille characters in a folder-gluer.
  • the device comprises two rotary cylindrical embossing tools. The cuts run through the folder-gluer and are embossed passing between the two tools.
  • the device comprises an armature, a first structure, mounted movable in translation relative to the armature, and equipped with the first rotary cylindrical tool, and a second structure, fixedly mounted on the armature, and equipped with the second cylindrical tool.
  • pushing means are provided and come to exert a push on the mobile structure.
  • Fine adjustment means are provided and comprise two beveled wedges arranged horizontally and cooperating with each other by their respective inclined face. A thumbscrew drives one of the shims in translation along its axis. The inclined face of one of the wedges slides under the inclined face of the other wedge, causing the vertical movement of the latter.
  • a main object of the present invention is to implement a method for adjusting a radial gap between two rotary cylindrical embossing tools in an embossing device.
  • a second goal is to achieve a embossing device with two rotary cylindrical tools provided with means for adjusting the radial gap between the two tools.
  • a third objective is to adjust a radial gap between two rotary cylindrical tools to adapt it according to the thickness of the support to be embossed.
  • a fourth objective is to provide means for precisely adjusting the embossing depth in the support.
  • a fifth objective is to solve the technical problems mentioned for the document of the state of the art.
  • Yet another object is to provide a folder-gluer equipped with an embossing module in which is installed at least one embossing device, more particularly for embossing braille characters.
  • the invention relates to a method for adjusting a radial gap between two rotary cylindrical embossing tools, in an embossing device, of the type comprising an armature, a first structure, mounted movable in translation relative to the armature, and equipped with a first rotary cylindrical embossing tool, and a second structure, fixedly mounted on the frame, and equipped with a second rotary cylindrical embossing tool.
  • the first step is to put the first prestressing tool with the second tool, pushing the first structure, which is movable carrying the first tool, against the second structure, which is fixed, carrying the second tool.
  • This first adjustment step makes it possible to adjust the spacing, and more precisely the radial gap, between the two tools, mainly according to the thickness of the support in front of it. be embossed scrolling between the two tools.
  • the second step is to adjust finely and precisely the position of the first tool relative to the second tool, by pulling the first structure, which is movable, carrying the first tool, so as to move away from the second structure, which is fixed, carrying the second tool.
  • This traction is the opposite of the prestressing exerted in the first step.
  • This second adjustment step makes it possible to adjust the interval between the two tools, mainly according to the depth of the desired embossing on the support.
  • the device is characterized in that the adjustment means comprise a pull member, carried by the armature and adapted to effect traction on the first movably mounted structure to move it away from the second fixed mounted structure, so as to finely adjust the radial gap between the first rotary cylindrical embossing tool and the second rotary cylindrical embossing tool.
  • the adjustment means comprise a pull member, carried by the armature and adapted to effect traction on the first movably mounted structure to move it away from the second fixed mounted structure, so as to finely adjust the radial gap between the first rotary cylindrical embossing tool and the second rotary cylindrical embossing tool.
  • a folder-gluer is characterized in that it is equipped with at least one embossing device of the blanks, having one or more technical characteristics described below and claimed.
  • a folder-gluer 1 has a modular structure.
  • the front is defined with respect to the front of the machine, the side of the pilot podium of the machine, known as the "driver side”.
  • the rear is defined with respect to the rear face of the machine on the opposite side to the pilot podium of the machine, known as the "opposite driver side”.
  • the upstream and downstream positions are defined with respect to the longitudinal direction and the direction of travel of the cuts (arrow F in Figure 1 ) from the entrance of folder-gluer 1 to the exit of folder-gluer 1.
  • the folder-gluer 1 is successively equipped from upstream to downstream with a feeder 2, an alignment module 3, an in-line quality control device 4, a braille type embossing module 6, a precleaning module 7, a gluing module 8, a folding module 9, a transfer module 11 and a receiving module 12.
  • the embossing device 14 comprises in particular a first male upper rotary embossing tool 16 and a second female lower rotary embossing tool 17, the two tools 16 and 17 being mounted in rotation and cooperating with each other.
  • the male tool 16 is constituted by a cylinder 18 whose peripheral surface is a metal plate provided with pins and wound on the cylinder 18. During embossing, the pins penetrate in the thickness of the cardboard to form braille characters.
  • the female tool 17 is constituted by a cylinder whose peripheral surface is provided with recesses. The cuts pass between the two tools 16 and 17.
  • This embossing device 14 is held by the frame 13.
  • the tools 16 and 17 are cantilevered rearward (shown in the description below) .
  • the tools 16 and 17 are cantilevered forward.
  • the embossing device 14 comprises a frame with a substantially vertical plate 19, secured to a substantially horizontal base 21.
  • the device 14 can be moved transversely, so as to be remote or close to or carriers.
  • the device 14 is mechanically connected to holding means and transverse translation means (not shown), through the frame base 21.
  • the holding means are of the rail type, located on the frame 13.
  • the translation means are of the transverse shaft and drive motor type, located in the frame 13.
  • the embossing device 14 comprises a fixed lower structure in the form of a lower flank 22.
  • the lower flank 22 is fixed to the rear of the reinforcing plate 19, parallel to the latter, and perpendicular to the base of the reinforcement 21, while being held apart by wedges 23.
  • the device 14 comprises a mobile upper structure, comprising first an upper flank 24.
  • the upper flank 24 is held at the rear of the reinforcing plate 19, parallel to the latter, and in the extension of the lower flank 22 .
  • the upper tool 16 is mounted at the rear free end of an upper tool shaft 26.
  • the lower tool 17 is mounted at the rear free end of a lower tool shaft (not shown in the Figures). ).
  • the two lower and upper trees 26 are parallel to each other and mounted cantilever.
  • the movable structure comprises an upper support housing 27 which holds and protects the upper shaft 26.
  • the upper housing 27 is attached to the rear of the upper wall 24.
  • the fixed structure comprises a lower support housing 28 which holds and protects the shaft inferior.
  • the lower housing 28 is attached to the rear of the lower flank 22.
  • the two housings 27 and 28 each have a generally hollow truncated cone shape. To limit the bending of the shafts, the two casings 27 and 28 each receive a bearing to keep the shafts closer to their free end.
  • the upper shaft 26 is attached to the axis of rotation of an upper synchronous drive motor 29, the front side opposite the upper tool 16.
  • the upper motor 29 is attached to the front of the upper sidewall 24.
  • the upper tool 16, the upper shaft 26, the upper motor 29 are part of the movable structure.
  • the lower shaft is attached to the axis of rotation of a lower synchronous drive motor 31 opposite the lower tool 17.
  • the lower motor 31 is attached to the front of the lower sidewall 22.
  • the lower tool 17, the lower shaft, the lower motor 31 are part of the fixed structure.
  • the tools 16 and 17 are correctly positioned relative to each other on their respective trees.
  • axial stalling means are provided for axially displacing the lower tool 17 with its shaft and its motor 31.
  • Angular wedging means are also provided and they correct any drift of the angular position of the tools 16 and 17. production course.
  • the movable structure 16, 24, 26, 27 and 29 moves vertically from top to bottom and vice versa.
  • two vertical lateral slides 32 are provided at the rear and on each side, upstream and downstream, of the reinforcing plate 19.
  • the upper flank 24 comprises two lateral slides 33 which are provided to maintain the upper sidewall 24 , the upper tool 16, the upper shaft 26, the upper housing 27 and the upper motor 29.
  • the two lateral slides 33 are provided for sliding on the two slides 32.
  • the embossing device 14 comprises a thrust member 34, carried by the armature 19 and 21 to make a first adjustment of the radial gap between the upper tool 16 and the lower tool 17.
  • the thrust member 34 is able to push (Arrow T in Figure 3 vertically the movable structure 16, 24, 26, 27 and 29 in the direction of the fixed structure 17, 22, 28 and 31.
  • the pushing force T is exerted in a diametrical direction bringing the upper tool 16 closer to the lower tool 17.
  • the thrust member 34 is held by a bracket 36 that extends to the front of the armature plate 19.
  • the thrust member 34 is for example in the form of a pneumatic cylinder.
  • the base of the free end of the rod 37 of the jack 34 presses against a surface upper leg 38 of the upper flank 24 unfolding forward.
  • the movable structure with upper flank 24, upper tool 16, upper shaft 26, upper casing 27 and upper motor 29 is pushed down T towards the fixed structure with lower flank 22, lower tool 17, lower shaft, lower casing 28 and lower motor 31.
  • the embossing device 14 comprises an adjustable stop in the form of a bar 39 attached to the bracket 36 and to the lug 38 of the upper flank 24.
  • the stop 39 defines a maximum stroke of the thrust member 34 and a radial gap between the two tools 16 and 17.
  • the embossing device 14 comprises means for fine adjustment of the radial gap existing between the upper tool 16 and the lower tool 17.
  • a pulling member 40 is provided.
  • the draw member 40 comes to fire (Arrow P in Figure 3 vertically movable structure 16, 24, 26, 27 and 29 upwards to move it away from the fixed structure 17, 22, 28 and 31.
  • the pulling force P is exerted in a diametrical direction, causing the upper tool 16 of the lower tool 17.
  • the drawing member 40 comprises a threaded rod 41.
  • the rod 41 is held in translation, while being rotatable, by the armature 19 and 21. More precisely, the rod 41 is held in translation, while being able to rotating, by a bearing piece 42, secured to the rear of the armature plate 19.
  • the bearing piece 42 takes the forces of traction exerted on the rod 41.
  • the pulling member 40 comprises an electric drive motor 44.
  • An upper end of the rod 41 is fixed to the rotation shaft 43 oriented vertically downwardly of the electric drive motor 44.
  • the motor 44 drives the rod 41 in rotation, which makes it go up or down.
  • the motor 44 is itself fixed to the rear of the armature plate 19 on the bearing part 42 via a bracket 46.
  • the pulling member 40 advantageously comprises a first portion forming or similar to a hook, provided in this case at the end of the rod 41.
  • This first hook portion engages with a second complementary hook portion present on the movable structure 16, 24, 26, 27 and 29.
  • the second hook portion is a hoop 47, through which the rod 41, and secured to the first movable structure 16, 24, 26, 27 and 29.
  • the hoop 47 is secured to an upper face of the upper flank 24 , rear side by relative to the reinforcing plate 19.
  • the first hook portion is a bulge, for example a nut 48, attached and attached to the end of the pull member 40.
  • the nut 48 is screwed to the end of the rod 41.
  • the nut 48 is housed in a cavity 49 formed in the arch 47.
  • the first hook portion, ie the nut 48 has a male convex shape which is housed in and cooperate with the second hook portion, ie the hoop 47, having a complementary female concave shape.
  • the first hook portion i.e. the nut 48, advantageously has an adjustable position by screwing and unscrewing at the end of the pulling member, i.e. the rod 41.
  • the embossing device 14 can be used for embossing Braille characters on cardboard blanks in the folder-gluer 1.
  • a first task of the operator is to choose the tools 16 and 17 according to the message to be printed on the cuts scrolling in The folder-gluer 1. Then the tools 16 and 17 are mounted on their respective shaft, and positioned angularly and axially.
  • the device 14 allows the implementation of a method of adjusting the radial gap between the two rotary cylindrical embossing tools 16 and 17.
  • the operator will thus first of all take care of the adjustment of the two tools. 16 and 17 depending on the thickness of the cardboard blanks moving in the folder-gluer 1.
  • the first movable structure 16, 24, 26, 27 and 29 is pushed T based on the reinforcement 19 and 21, to be brought closer to the second fixed structure 17, 22, 28 and 31, so that the radial gap between the first upper tool 16 and the second lower tool 17 is adjusted.
  • the operator will adjust precisely the depth of penetration of the pins of the upper tool 16 in the cardboard blanks scrolling in the folder-gluer 1.
  • the first movable structure 16, 24, 26, 27 and 29 is pulled P based on the frame 19 and 21, to be spaced from the second fixed structure 17, 22, 28 and 31, so that the radial gap between the first upper tool 16 and the second lower tool 17 be finely tuned.
  • the electric drive motor 44 can be replaced by a fine adjustment wheel.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
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Description

La présente invention concerne un procédé de réglage de l'intervalle radial existant entre deux outils cylindriques rotatifs appartenant à un dispositif de gaufrage. L'invention se rapporte également à un dispositif de gaufrage possédant deux outils cylindriques rotatifs, dont l'intervalle radial est réglable. L'invention concerne une plieuse-colleuse équipée d'un dispositif de gaufrage à deux outils cylindriques rotatifs.The present invention relates to a method for adjusting the radial gap existing between two rotary cylindrical tools belonging to an embossing device. The invention also relates to an embossing device having two rotary cylindrical tools, whose radial gap is adjustable. The invention relates to a folder-gluer equipped with an embossing device with two rotary cylindrical tools.

Dans l'industrie de l'emballage, la fabrication des boîtes s'effectue en ligne, en pliant et en collant des découpes de carton au moyen de machines appelées plieuses-colleuses. Une plieuse-colleuse comprend une suite de modules et de stations, comprenant chacun des agencements fonctionnels. Le nombre de modules varie en fonction de la complexité des opérations de fabrication que nécessite le type de boîte choisi.In the packaging industry, boxes are produced online by folding and gluing cardboard blanks using machines called folder-gluers. A folder-gluer comprises a series of modules and stations, each comprising functional arrangements. The number of modules varies according to the complexity of the manufacturing operations required by the type of box chosen.

La plieuse-colleuse est équipée avec un margeur alimentant la machine découpe par découpe à partir d'une pile, un module d'alignement, un casseur précassant les plis non longitudinaux, des plieurs à crochets qui plient les pattes avants puis les pattes arrières de la découpe, une station d'encollage, un plieur pour le pliage des plis longitudinaux de la découpe, un presseur qui comprime l'ensemble des plis et dépose les boîtes en nappe, et un module de réception qui reçoit les boîtes tout en les maintenant pressées pour permettre à la colle de sécher.The folder-gluer is equipped with a feeder feeding the machine cutting by cutting from a stack, an alignment module, a breaker precuring the non-longitudinal folds, folders with hooks which bend the front legs and the rear legs of the cutting, a sizing station, a folder for folding the longitudinal folds of the blank, a presser that compresses all the folds and deposits the boxes in sheet, and a receiving module that receives the boxes while maintaining them pressed to allow the glue to dry.

Le convoyage des découpes d'une station à une autre selon une trajectoire sensiblement plane et horizontale se fait à l'aide de transporteurs à courroies qui, par friction, saisissent les découpes entre un transporteur inférieur et un transporteur supérieur. Le transporteur inférieur est muni de courroies inférieures et le transporteur supérieur est muni, soit de courroies supérieures, soit de galets d'appui supérieurs.The conveying of cuts from one station to another in a substantially flat and horizontal trajectory is carried out using belt conveyors which, by friction, grip the cuts between a lower conveyor and an upper conveyor. The lower conveyor is provided with lower belts and the upper conveyor is provided with either upper belts or upper support rollers.

Pour respecter certaines réglementations en matière d'information à destination des personnes malvoyantes ou aveugles, il est devenu nécessaire d'imprimer des messages en caractères braille sur certaines boîtes d'emballage, en particulier sur les boîtes de médicaments. Les caractères braille sont gaufrés sur une surface de la boîte pour faire apparaître des points en relief ou protubérances permettant une lecture tactile des messages.To comply with certain information regulations for the visually impaired or blind, it has become necessary to print messages in braille characters on some packaging boxes, especially on medicine boxes. Braille characters are embossed on one surface of the box to make appear points in relief or protuberances allowing a tactile reading of the messages.

Le gaufrage des caractères braille se fait grâce à un dispositif monté dans un module de gaufrage, ce dernier étant installé dans la plieuse-colleuse. Le dispositif comprend deux outils de gaufrage rotatifs, un outil de gaufrage mâle coopérant avec un outil de gaufrage femelle, montés de part et d'autre du plan défini par le défilement des découpes selon leur trajectoire.The embossing of braille characters is done by means of a device mounted in an embossing module, the latter being installed in the folder-gluer. The device comprises two rotary embossing tools, a male embossing tool cooperating with a female embossing tool, mounted on either side of the plane defined by the scrolling of the cuts along their path.

La facilité et la rapidité avec laquelle une personne malvoyante ou aveugle lit le message gaufré dépend de la taille, de la forme et de la régularité des caractères braille se trouvant à la surface de la boîte. Les caractères braille doivent être gaufrés sans bavures et posséder une hauteur déterminée. La qualité de la boîte obtenue ainsi dépend également de la qualité du gaufrage des caractères braille.The ease and speed with which a visually impaired person reads the embossed message depends on the size, shape and regularity of Braille characters on the surface of the box. Braille characters should be embossed without burrs and have a certain height. The quality of the box thus obtained also depends on the quality of the embossing of Braille characters.

Etat de la techniqueState of the art

Le document US-2012'053'034 décrit un module avec un dispositif de gaufrage de caractères braille dans une plieuse-colleuse comprenant deux structures. Une structure supérieure transversale porte des cassettes dotées d'un outil de gaufrage supérieur et une structure inférieure transversale porte des cassettes dotées d'un outil de gaufrage inférieur. La structure inférieure est maintenue au bâti avant et arrière du module. La structure supérieure pivote par rapport à la structure inférieure grâce à un axe de pivotement transversal situé du côté amont.The document US 2012'053'034 discloses a module with a braille character embossing device in a folder-gluer comprising two structures. A transverse upper structure carries cassettes with an upper embossing tool and a lower transverse structure carries cassettes with a lower embossing tool. The lower structure is held at the front and back of the module. The upper structure pivots relative to the lower structure through a transverse pivot axis located on the upstream side.

La hauteur du gaufrage est réglable. La distance entre les deux outils est tout d'abord réglée par deux vérins avant et arrière. Les vérins sont solidarisés à la structure inférieure et tirent la structure supérieure en la faisant pivoter en direction de la structure inférieure.The height of the embossing is adjustable. The distance between the two tools is first set by two front and rear cylinders. The cylinders are secured to the lower structure and pull the upper structure by rotating it towards the lower structure.

Un mécanisme de réglage fin de la hauteur du gaufrage sont également prévus. Une butée supérieure solidaire de la structure supérieure vient contre une butée inférieure solidaire de la structure inférieure. La butée inférieure est fixe et la butée supérieure est réglable sur une distance souhaitée. La butée supérieure s'appuie sur la butée inférieure et repousse la structure supérieure en la faisant pivoter en direction opposée de la structure inférieure.A fine adjustment mechanism of the embossing height is also provided. An upper abutment secured to the upper structure comes against a lower abutment integral with the lower structure. The lower stop is fixed and the upper stop is adjustable over a desired distance. The upper stop is supported on the lower stop and pushes the upper structure by pivoting it in the opposite direction of the lower structure.

Cependant, un tel réglage n'est pas précis. D'une part, les vérins viennent tirer sur un bord avant et arrière de la structure supérieure, ce qui engendre des déformations. D'autre part, le mécanisme de réglage fin est monté sur la structure supérieure qui est mobile en pivotement. Le système de réglage fin agit en compression, butée supérieure contre butée inférieure. Tous les efforts sont donc repris par la structure supérieure, ce qui entraîne des contraintes mécaniques dans l'axe de pivotement transversal. En raison de l'élancement traversant de la structure supérieure, de l'empilage des divers champs de tolérance et des jeux dans le mécanisme de commande du réglage fin, il n'est pas possible d'obtenir le même réglage entre le côté avant et le côté arrière de la structure supérieure. Enfin, le réglage obtenu est très variable tout au long de la structure supérieure transversale entre le côté avant et le côté arrière de la structure supérieure.However, such a setting is not precise. On the one hand, the jacks come to pull on a front and rear edge of the upper structure, which causes deformations. On the other hand, the fine adjustment mechanism is mounted on the upper structure which is pivotally movable. The fine adjustment system acts in compression, upper stop against lower stop. All efforts are therefore taken up by the upper structure, resulting in mechanical stresses in the transverse pivot axis. Due to the traversing slenderness of the upper structure, the stacking of the various tolerance fields and the clearances in the fine adjustment control mechanism, it is not possible to obtain the same adjustment between the front and the back side of the upper structure. Finally, the adjustment obtained is very variable throughout the upper transverse structure between the front side and the rear side of the upper structure.

Le document EP-1'932'657 présente un dispositif de gaufrage de caractères braille dans une plieuse-colleuse. Le dispositif comprend deux outils cylindriques rotatifs de gaufrage. Les découpes défilent dans la plieuse-colleuse et sont gaufrées en passant entre les deux outils. Le dispositif comprend une armature, une première structure, montée mobile en translation par rapport à l'armature, et équipée avec le premier outil cylindrique rotatif, et une deuxième structure, montée fixe sur l'armature, et équipée avec le deuxième outil cylindrique.The document EP-1'932'657 presents a device for embossing braille characters in a folder-gluer. The device comprises two rotary cylindrical embossing tools. The cuts run through the folder-gluer and are embossed passing between the two tools. The device comprises an armature, a first structure, mounted movable in translation relative to the armature, and equipped with the first rotary cylindrical tool, and a second structure, fixedly mounted on the armature, and equipped with the second cylindrical tool.

Pour régler la hauteur des caractères braille, des moyens de poussée sont prévus et viennent exercer une poussée sur la structure mobile. Des moyens de réglage fin sont prévus et comprennent deux cales biseautées disposées horizontalement et coopérant entre-elles par leur face inclinée respective. Une vis à mollette entraîne l'une des cales en translation le long de son axe. La face inclinée de l'une des cales glisse sous la face inclinée de l'autre des cales, provoquant le déplacement vertical de cette dernière.To adjust the height of braille characters, pushing means are provided and come to exert a push on the mobile structure. Fine adjustment means are provided and comprise two beveled wedges arranged horizontally and cooperating with each other by their respective inclined face. A thumbscrew drives one of the shims in translation along its axis. The inclined face of one of the wedges slides under the inclined face of the other wedge, causing the vertical movement of the latter.

Cependant, en raison de la position longitudinale des cales, de la vis et de la molette, il est difficile de perfectionner les moyens de réglage fin. En effet, le rajout de pièces va encombrer latéralement l'espace dans lequel défilent les découpes de carton. Le rajout de pièces ne permet plus le passage de découpes de grandes dimensions. Le rajout de pièces va limiter la position des caractères braille sur la découpe, ceux-ci ne pouvant alors plus être gaufrés au centre de la découpe.However, because of the longitudinal position of the wedges, the screw and the wheel, it is difficult to improve the fine adjustment means. Indeed, the addition of parts will encumber laterally the space in which the cardboard blanks pass. The addition of pieces no longer allows the passage of large cuts. The addition of pieces will limit the position of Braille characters on the cut, they can not then be embossed in the center of the cut.

Exposé de l'inventionPresentation of the invention

Un objectif principal de la présente invention consiste à mettre en oeuvre un procédé pour régler un intervalle radial entre deux outils cylindriques rotatifs de gaufrage dans un dispositif de gaufrage. Un deuxième objectif est de réaliser un dispositif de gaufrage avec deux outils cylindriques rotatifs muni de moyens de réglage de l'intervalle radial entre les deux outils. Un troisième objectif est de régler un intervalle radial entre deux outils cylindriques rotatifs pour l'adapter en fonction de l'épaisseur du support devant être gaufré. Un quatrième objectif est celui de prévoir des moyens pour régler de manière précise la profondeur de gaufrage dans le support. Un cinquième objectif est de résoudre les problèmes techniques mentionnés pour le document de l'état de la technique. Un autre objectif encore est celui de réaliser une plieuse-colleuse équipée avec un module de gaufrage dans lequel est installé au moins un dispositif de gaufrage, plus particulièrement destiné au gaufrage de caractères braille.A main object of the present invention is to implement a method for adjusting a radial gap between two rotary cylindrical embossing tools in an embossing device. A second goal is to achieve a embossing device with two rotary cylindrical tools provided with means for adjusting the radial gap between the two tools. A third objective is to adjust a radial gap between two rotary cylindrical tools to adapt it according to the thickness of the support to be embossed. A fourth objective is to provide means for precisely adjusting the embossing depth in the support. A fifth objective is to solve the technical problems mentioned for the document of the state of the art. Yet another object is to provide a folder-gluer equipped with an embossing module in which is installed at least one embossing device, more particularly for embossing braille characters.

L'invention se rapporte à un procédé pour régler un intervalle radial entre deux outils cylindriques rotatifs de gaufrage, dans un dispositif de gaufrage, du type comprenant une armature, une première structure, montée mobile en translation par rapport à l'armature, et équipée avec un premier outil cylindrique rotatif de gaufrage, et une deuxième structure, montée fixe sur l'armature, et équipée avec un deuxième outil cylindrique rotatif de gaufrage.The invention relates to a method for adjusting a radial gap between two rotary cylindrical embossing tools, in an embossing device, of the type comprising an armature, a first structure, mounted movable in translation relative to the armature, and equipped with a first rotary cylindrical embossing tool, and a second structure, fixedly mounted on the frame, and equipped with a second rotary cylindrical embossing tool.

Conformément à un premier aspect de la présente invention, le procédé comprend les étapes consistant à:

  • à pousser sur la première structure montée mobile pour la rapprocher de la deuxième structure montée fixe, en s'appuyant sur l'armature, de façon à ajuster un intervalle radial entre le premier outil cylindrique rotatif de gaufrage et le deuxième outil cylindrique rotatif de gaufrage, et
  • à tirer sur la première structure montée mobile pour l'écarter de la deuxième structure montée fixe, en s'appuyant sur l'armature, de façon à régler finement l'intervalle radial entre le premier outil cylindrique rotatif de gaufrage et le deuxième outil cylindrique rotatif de gaufrage.
According to a first aspect of the present invention, the method comprises the steps of:
  • pushing on the first movable mounted structure to bring it closer to the second fixed mounted structure, resting on the frame, so as to adjust a radial gap between the first rotary cylindrical embossing tool and the second rotary cylindrical embossing tool , and
  • pulling on the first movable mounted structure to move away from the second fixed mounted structure, relying on the frame, so as to finely adjust the radial gap between the first rotary cylindrical embossing tool and the second cylindrical tool rotary embossing.

Autrement dit, la première étape revient à mettre le premier outil en précontrainte avec le deuxième outil, en poussant la première structure, qui est mobile, portant le premier outil, contre la deuxième structure, qui est fixe, portant le deuxième outil. Cette première étape de réglage permet d'ajuster l'écartement, et plus précisément l'intervalle radial, entre les deux outils, principalement en fonction de l'épaisseur du support devant être gaufré défilant entre les deux outils.In other words, the first step is to put the first prestressing tool with the second tool, pushing the first structure, which is movable carrying the first tool, against the second structure, which is fixed, carrying the second tool. This first adjustment step makes it possible to adjust the spacing, and more precisely the radial gap, between the two tools, mainly according to the thickness of the support in front of it. be embossed scrolling between the two tools.

La deuxième étape revient à régler finement et précisément la position du premier outil par rapport au deuxième outil, en tirant la première structure, qui est mobile, portant le premier outil, de façon à l'éloigner de la deuxième structure, qui est fixe, portant le deuxième outil. Cette traction se fait à l'opposé de la précontrainte exercée dans la première étape. Cette deuxième étape de réglage permet d'ajuster l'intervalle entre les deux outils, principalement en fonction de la profondeur du gaufrage souhaité sur le support.The second step is to adjust finely and precisely the position of the first tool relative to the second tool, by pulling the first structure, which is movable, carrying the first tool, so as to move away from the second structure, which is fixed, carrying the second tool. This traction is the opposite of the prestressing exerted in the first step. This second adjustment step makes it possible to adjust the interval between the two tools, mainly according to the depth of the desired embossing on the support.

Dans un autre aspect de l'invention, un dispositif de gaufrage avec deux outils cylindriques rotatifs de gaufrage, comprend:

  • une armature,
  • une première structure, montée mobile en translation par rapport à l'armature, et équipée avec un premier outil cylindrique rotatif de gaufrage,
  • une deuxième structure, montée fixe sur l'armature, et équipée avec un deuxième outil cylindrique rotatif de gaufrage,
  • un organe de poussée, porté par l'armature et apte à pousser la première structure montée mobile en direction de la deuxième structure montée fixe, pour ajuster un intervalle radial entre le premier outil cylindrique rotatif de gaufrage et le deuxième outil cylindrique rotatif de gaufrage, et
  • des moyens de réglage de l'intervalle radial entre le premier outil cylindrique rotatif de gaufrage et le deuxième outil cylindrique rotatif de gaufrage.
In another aspect of the invention, an embossing device with two rotary cylindrical embossing tools comprises:
  • a frame,
  • a first structure, mounted movable in translation relative to the frame, and equipped with a first rotary cylindrical embossing tool,
  • a second structure, fixedly mounted on the frame, and equipped with a second rotary cylindrical embossing tool,
  • a thrust member, carried by the armature and adapted to push the first movably mounted structure towards the second fixed mounted structure, to adjust a radial gap between the first rotary cylindrical embossing tool and the second rotary cylindrical embossing tool, and
  • means for adjusting the radial gap between the first rotary cylindrical embossing tool and the second rotary cylindrical embossing tool.

Le dispositif est caractérisé en ce que les moyens de réglage comprennent un organe de tirage, porté par l'armature et apte à effectuer une traction sur la première structure montée mobile pour l'écarter de la deuxième structure montée fixe, de façon à régler finement l'intervalle radial entre le premier outil cylindrique rotatif de gaufrage et le deuxième outil cylindrique rotatif de gaufrage.The device is characterized in that the adjustment means comprise a pull member, carried by the armature and adapted to effect traction on the first movably mounted structure to move it away from the second fixed mounted structure, so as to finely adjust the radial gap between the first rotary cylindrical embossing tool and the second rotary cylindrical embossing tool.

Selon un autre aspect encore de l'invention, une plieuse-colleuse est caractérisée en ce qu'elle est équipée avec au moins un dispositif de gaufrage des découpes, présentant une ou plusieurs caractéristiques techniques décrites ci-dessous et revendiquées.According to yet another aspect of the invention, a folder-gluer is characterized in that it is equipped with at least one embossing device of the blanks, having one or more technical characteristics described below and claimed.

Brève description des dessinsBrief description of the drawings

L'invention sera bien comprise et ses divers avantages et différentes caractéristiques ressortiront mieux lors de la description suivante, de l'exemple non limitatif de réalisation, en référence aux dessins schématiques annexés, dans lesquels:

  • la Figure 1 représente une vue latérale synoptique d'une plieuse-colleuse, équipée avec un module de gaufrage et d'un dispositif de gaufrage;
  • la Figure 2 représente une vue en perspective arrière d'un dispositif de gaufrage de caractères braille selon l'invention; et
  • la Figure 3 représente une vue en coupe transversale partielle du dispositif de la Figure 2.
The invention will be well understood and its various advantages and different characteristics will become more apparent in the following description, of the nonlimiting example of embodiment, with reference to the appended schematic drawings, in which:
  • the Figure 1 represents a synoptic side view of a folder-gluer, equipped with an embossing module and an embossing device;
  • the Figure 2 is a rear perspective view of a braille character embossing device according to the invention; and
  • the Figure 3 represents a partial cross-sectional view of the device of the Figure 2 .

Exposé détaillé de modes de réalisation préférésDetailed description of preferred embodiments

Comme l'illustre la Figure 1, une plieuse-colleuse 1 est dotée d'une structure modulaire. L'avant est défini par rapport à la face avant de la machine, du côté du podium de pilotage de la machine, connu sous la dénomination de « côté conducteur ». L'arrière est défini par rapport à la face arrière de la machine du côté opposé au podium de pilotage de la machine, connu sous la dénomination de « côté opposé conducteur ». Les positions amont et aval sont définies par rapport à la direction longitudinale et au sens de défilement des découpes (Flèche F en Figure 1) de l'entrée de la plieuse-colleuse 1 jusqu'à la sortie de la plieuse-colleuse 1.As illustrated by Figure 1 a folder-gluer 1 has a modular structure. The front is defined with respect to the front of the machine, the side of the pilot podium of the machine, known as the "driver side". The rear is defined with respect to the rear face of the machine on the opposite side to the pilot podium of the machine, known as the "opposite driver side". The upstream and downstream positions are defined with respect to the longitudinal direction and the direction of travel of the cuts (arrow F in Figure 1 ) from the entrance of folder-gluer 1 to the exit of folder-gluer 1.

La plieuse-colleuse 1 est équipée successivement de l'amont vers l'aval avec un margeur 2, un module d'alignement 3, un dispositif de contrôle qualité en ligne 4, un module de gaufrage de caractères braille 6, un module de précassage 7, un module d'encollage 8, un module de pliage 9, un module de transfert 11 et un module de réception 12.The folder-gluer 1 is successively equipped from upstream to downstream with a feeder 2, an alignment module 3, an in-line quality control device 4, a braille type embossing module 6, a precleaning module 7, a gluing module 8, a folding module 9, a transfer module 11 and a receiving module 12.

Le module de gaufrage 6 comprend un bâti 13 et un dispositif de gaufrage de caractères braille 14 (voir le document EP-1'932'657 ). Le module de gaufrage 6 peut comporter deux dispositifs de gaufrage, disposés du côté avant et arrière du bâti 13 du module 6. Le module de gaufrage 6 comprend également deux transporteurs (non représentés).The embossing module 6 comprises a frame 13 and a braille character embossing device 14 (see the document EP-1'932'657 ). The embossing module 6 may comprise two embossing devices, arranged on the front and rear side of the frame 13 of the module 6. The embossing module 6 also comprises two conveyors (not shown).

Le dispositif de gaufrage 14 comprend notamment un premier outil de gaufrage rotatif supérieur mâle 16 et un deuxième outil de gaufrage rotatif inférieur femelle 17, les deux outils 16 et 17 étant montés en rotation et coopérant entre-eux. L'outil mâle 16 est constitué par un cylindre 18 dont la surface périphérique est une plaque métallique munie de picots et enroulée sur le cylindre 18. Lors du gaufrage, les picots pénètrent dans l'épaisseur du carton pour former les caractères braille. L'outil femelle 17 est constitué par un cylindre dont la surface périphérique est munie de creux. Les découpes défilent entre les deux outils 16 et 17.The embossing device 14 comprises in particular a first male upper rotary embossing tool 16 and a second female lower rotary embossing tool 17, the two tools 16 and 17 being mounted in rotation and cooperating with each other. The male tool 16 is constituted by a cylinder 18 whose peripheral surface is a metal plate provided with pins and wound on the cylinder 18. During embossing, the pins penetrate in the thickness of the cardboard to form braille characters. The female tool 17 is constituted by a cylinder whose peripheral surface is provided with recesses. The cuts pass between the two tools 16 and 17.

Ce dispositif de gaufrage 14 est maintenu par le bâti 13. Lorsque le dispositif de gaufrage 14 est situé du côté avant, les outils 16 et 17 sont orientés en porte-à-faux vers l'arrière (présenté dans la description ci-dessous). Lorsque le dispositif de gaufrage 14 est situé du côté arrière, les outils 16 et 17 sont orientés en porte-à-faux vers l'avant.This embossing device 14 is held by the frame 13. When the embossing device 14 is located on the front side, the tools 16 and 17 are cantilevered rearward (shown in the description below) . When the embossing device 14 is located on the back side, the tools 16 and 17 are cantilevered forward.

Le dispositif de gaufrage 14 comprend une armature avec une plaque sensiblement verticale 19, solidarisée à une base sensiblement horizontale 21. Le dispositif 14 peut être déplacé transversalement, de façon à pouvoir être éloigné ou rapproché du ou des transporteurs. Le dispositif 14 est mécaniquement connecté à des moyens de maintien et à des moyens de translation transversale (non représentés), par l'intermédiaire de la base d'armature 21. Les moyens de maintien sont de type rails, situés sur le bâti 13. Les moyens de translation sont de type arbre transversaux et moteur d'entraînement, situés dans le bâti 13.The embossing device 14 comprises a frame with a substantially vertical plate 19, secured to a substantially horizontal base 21. The device 14 can be moved transversely, so as to be remote or close to or carriers. The device 14 is mechanically connected to holding means and transverse translation means (not shown), through the frame base 21. The holding means are of the rail type, located on the frame 13. The translation means are of the transverse shaft and drive motor type, located in the frame 13.

Le dispositif de gaufrage 14 comprend une structure inférieure fixe sous la forme d'un flanc inférieur 22. Le flanc inférieur 22 est fixé à l'arrière de la plaque d'armature 19, parallèle à cette dernière, et perpendiculaire à la base d'armature 21, tout en étant maintenu écarté par des cales 23.The embossing device 14 comprises a fixed lower structure in the form of a lower flank 22. The lower flank 22 is fixed to the rear of the reinforcing plate 19, parallel to the latter, and perpendicular to the base of the reinforcement 21, while being held apart by wedges 23.

Le dispositif 14 comprend une structure supérieure mobile, comprenant tout d'abord un flanc supérieur 24. Le flanc supérieur 24 est maintenu à l'arrière de la plaque d'armature 19, parallèle à cette dernière, et dans le prolongement du flanc inférieur 22.The device 14 comprises a mobile upper structure, comprising first an upper flank 24. The upper flank 24 is held at the rear of the reinforcing plate 19, parallel to the latter, and in the extension of the lower flank 22 .

L'outil supérieur 16 est monté à l'extrémité libre arrière d'un arbre porte-outil supérieur 26. L'outil inférieur 17 est monté à l'extrémité libre arrière d'un arbre porte-outil inférieur (non visible dans les Figures). Les deux arbres inférieur et supérieur 26 sont parallèles entre eux et montés en porte-à-faux.The upper tool 16 is mounted at the rear free end of an upper tool shaft 26. The lower tool 17 is mounted at the rear free end of a lower tool shaft (not shown in the Figures). ). The two lower and upper trees 26 are parallel to each other and mounted cantilever.

La structure mobile comprend un carter support supérieur 27 qui maintient et protège l'arbre supérieur 26. Le carter supérieur 27 est fixé à l'arrière du flanc supérieur 24. La structure fixe comprend un carter support inférieur 28 qui maintient et protège l'arbre inférieur. Le carter inférieur 28 est fixé à l'arrière du flanc inférieur 22. Les deux carters 27 et 28 ont chacun une forme générale de cône tronqué creux. Pour limiter la flexion des arbres, les deux carters 27 et 28 reçoivent chacun un roulement pour maintenir les arbres au plus près de leur extrémité libre.The movable structure comprises an upper support housing 27 which holds and protects the upper shaft 26. The upper housing 27 is attached to the rear of the upper wall 24. The fixed structure comprises a lower support housing 28 which holds and protects the shaft inferior. The lower housing 28 is attached to the rear of the lower flank 22. The two housings 27 and 28 each have a generally hollow truncated cone shape. To limit the bending of the shafts, the two casings 27 and 28 each receive a bearing to keep the shafts closer to their free end.

L'arbre supérieur 26 est attaché à l'axe de rotation d'un moteur d'entraînement synchrone supérieur 29, côté avant à l'opposé de l'outil supérieur 16. Le moteur supérieur 29 est fixé à l'avant du flanc supérieur 24. Dans cet exemple de réalisation, l'outil supérieur 16, l'arbre supérieur 26, le moteur supérieur 29 font partie de la structure mobile.The upper shaft 26 is attached to the axis of rotation of an upper synchronous drive motor 29, the front side opposite the upper tool 16. The upper motor 29 is attached to the front of the upper sidewall 24. In this embodiment, the upper tool 16, the upper shaft 26, the upper motor 29 are part of the movable structure.

L'arbre inférieur est attaché à l'axe de rotation d'un moteur d'entraînement synchrone inférieur 31 à l'opposé de l'outil inférieur 17. Le moteur inférieur 31 est fixé à l'avant du flanc inférieur 22. L'outil inférieur 17, l'arbre inférieur, le moteur inférieur 31 font partie de la structure fixe.The lower shaft is attached to the axis of rotation of a lower synchronous drive motor 31 opposite the lower tool 17. The lower motor 31 is attached to the front of the lower sidewall 22. The lower tool 17, the lower shaft, the lower motor 31 are part of the fixed structure.

Pour lancer un travail de gaufrage de caractères braille, les outils 16 et 17 sont correctement positionnés l'un par rapport à l'autre, sur leur arbre respectif. A cet effet, des moyens de calage axial sont prévus pour déplacer axialement l'outil inférieur 17 avec son arbre et son moteur 31. Des moyens de calage angulaire sont également prévus et ils corrigent toute dérive de la position angulaire des outils 16 et 17 en cours de production.To start a Braille character embossing job, the tools 16 and 17 are correctly positioned relative to each other on their respective trees. For this purpose, axial stalling means are provided for axially displacing the lower tool 17 with its shaft and its motor 31. Angular wedging means are also provided and they correct any drift of the angular position of the tools 16 and 17. production course.

Pour assurer le réglage de l'écartement entre les deux outils 16 et 17, la structure mobile 16, 24, 26, 27 et 29 se déplace verticalement du haut vers le bas et réciproquement. Pour ce faire, deux coulisses latérales verticales 32 sont prévues à l'arrière et de chaque côté, amont et aval, de la plaque d'armature 19. Le flanc supérieur 24 comprend deux coulisseaux latéraux 33 qui sont prévus pour maintenir le flanc supérieur 24, l'outil supérieur 16, l'arbre supérieur 26, le carter supérieur 27 et le moteur supérieur 29. Et les deux coulisseaux latéraux 33 sont prévus pour coulisser sur les deux coulisses 32.To ensure the adjustment of the spacing between the two tools 16 and 17, the movable structure 16, 24, 26, 27 and 29 moves vertically from top to bottom and vice versa. To do this, two vertical lateral slides 32 are provided at the rear and on each side, upstream and downstream, of the reinforcing plate 19. The upper flank 24 comprises two lateral slides 33 which are provided to maintain the upper sidewall 24 , the upper tool 16, the upper shaft 26, the upper housing 27 and the upper motor 29. And the two lateral slides 33 are provided for sliding on the two slides 32.

Le dispositif de gaufrage 14 comprend un organe de poussée 34, porté par l'armature 19 et 21 pour effectuer un premier ajustement de l'intervalle radial entre l'outil supérieur 16 et l'outil inférieur 17. L'organe de poussée 34 est apte à pousser (Flèche T en Figure 3) verticalement la structure mobile 16, 24, 26, 27 et 29 en direction de la structure fixe 17, 22, 28 et 31. La force de poussée T s'exerce selon une direction diamétrale faisant rapprocher l'outil supérieur 16 de l'outil inférieur 17. L'organe de poussée 34 est maintenu par une console 36 se déployant à l'avant de la plaque d'armature 19.The embossing device 14 comprises a thrust member 34, carried by the armature 19 and 21 to make a first adjustment of the radial gap between the upper tool 16 and the lower tool 17. The thrust member 34 is able to push (Arrow T in Figure 3 vertically the movable structure 16, 24, 26, 27 and 29 in the direction of the fixed structure 17, 22, 28 and 31. The pushing force T is exerted in a diametrical direction bringing the upper tool 16 closer to the lower tool 17. The thrust member 34 is held by a bracket 36 that extends to the front of the armature plate 19.

L'organe de poussée 34 est par exemple sous la forme d'un vérin pneumatique. La base de l'extrémité libre de la tige 37 du vérin 34 vient appuyer contre une surface supérieure d'une patte 38 du flanc supérieur 24 se déployant vers l'avant. La structure mobile avec flanc supérieur 24, outil supérieur 16, arbre supérieur 26, carter supérieur 27 et moteur supérieur 29 est poussée vers le bas T en direction de la structure fixe avec flanc inférieur 22, outil inférieur 17, arbre inférieur, carter inférieur 28 et moteur inférieur 31.The thrust member 34 is for example in the form of a pneumatic cylinder. The base of the free end of the rod 37 of the jack 34 presses against a surface upper leg 38 of the upper flank 24 unfolding forward. The movable structure with upper flank 24, upper tool 16, upper shaft 26, upper casing 27 and upper motor 29 is pushed down T towards the fixed structure with lower flank 22, lower tool 17, lower shaft, lower casing 28 and lower motor 31.

Le dispositif de gaufrage 14 comprend une butée réglable sous la forme d'une barrette 39 attachée à la console 36 et à la patte 38 du flanc supérieur 24. La butée 39 délimite une course maximale de l'organe de poussée 34 et un intervalle radial minimal entre les deux outils 16 et 17.The embossing device 14 comprises an adjustable stop in the form of a bar 39 attached to the bracket 36 and to the lug 38 of the upper flank 24. The stop 39 defines a maximum stroke of the thrust member 34 and a radial gap between the two tools 16 and 17.

Conformément à l'invention, le dispositif de gaufrage 14 comprend des moyens de réglage fin de l'intervalle radial existant entre l'outil supérieur 16 et l'outil inférieur 17. Pour ce faire, un organe de tirage 40 est prévu. L'organe de tirage 40 vient tirer (Flèche P en Figure 3) verticalement la structure mobile 16, 24, 26, 27 et 29 vers le haut pour l'écarter de la structure fixe 17, 22, 28 et 31. La force de tirage P s'exerce selon une direction diamétrale, faisant écarter l'outil supérieur 16 de l'outil inférieur 17.According to the invention, the embossing device 14 comprises means for fine adjustment of the radial gap existing between the upper tool 16 and the lower tool 17. To do this, a pulling member 40 is provided. The draw member 40 comes to fire (Arrow P in Figure 3 vertically movable structure 16, 24, 26, 27 and 29 upwards to move it away from the fixed structure 17, 22, 28 and 31. The pulling force P is exerted in a diametrical direction, causing the upper tool 16 of the lower tool 17.

Très préférentiellement, l'organe de tirage 40 comprend une tige filetée 41. La tige 41 est maintenue en translation, tout en pouvant tourner, par l'armature 19 et 21. Plus précisément, la tige 41 est maintenue en translation, tout en pouvant tourner, par une pièce formant palier 42, solidarisée à l'arrière de la plaque d'armature 19. La pièce formant palier 42 reprend les forces de tractions exercées sur la tige 41.Very preferably, the drawing member 40 comprises a threaded rod 41. The rod 41 is held in translation, while being rotatable, by the armature 19 and 21. More precisely, the rod 41 is held in translation, while being able to rotating, by a bearing piece 42, secured to the rear of the armature plate 19. The bearing piece 42 takes the forces of traction exerted on the rod 41.

L'organe de tirage 40 comprend un moteur électrique d'entrainement 44. Une extrémité supérieure de la tige 41 est fixée à l'arbre de rotation 43 orienté verticalement vers le bas du moteur électrique d'entrainement 44. Le moteur 44 entraîne la tige 41 en rotation, ce qui fait monter ou descendre cette-dernière. Le moteur 44 est fixé lui-même à l'arrière de la plaque d'armature 19 sur la pièce formant palier 42 via une patte de fixation 46.The pulling member 40 comprises an electric drive motor 44. An upper end of the rod 41 is fixed to the rotation shaft 43 oriented vertically downwardly of the electric drive motor 44. The motor 44 drives the rod 41 in rotation, which makes it go up or down. The motor 44 is itself fixed to the rear of the armature plate 19 on the bearing part 42 via a bracket 46.

Pour effectuer la traction P, l'organe de tirage 40 comprend favorablement une première partie formant, ou analogue à, un crochet, prévu dans ce cas à l'extrémité de la tige 41. Cette première partie formant crochet vient en prise avec une deuxième partie formant crochet complémentaire présente sur la structure mobile 16, 24, 26, 27 et 29.To effect the traction P, the pulling member 40 advantageously comprises a first portion forming or similar to a hook, provided in this case at the end of the rod 41. This first hook portion engages with a second complementary hook portion present on the movable structure 16, 24, 26, 27 and 29.

De manière préférentielle, la deuxième partie formant crochet est un arceau 47, traversé la tige 41, et solidarisé à la première structure mobile 16, 24, 26, 27 et 29. L'arceau 47 est solidarisé sur une face supérieure du flanc supérieur 24, côté arrière par rapport à la plaque d'armature 19.Preferably, the second hook portion is a hoop 47, through which the rod 41, and secured to the first movable structure 16, 24, 26, 27 and 29. The hoop 47 is secured to an upper face of the upper flank 24 , rear side by relative to the reinforcing plate 19.

De manière favorable, la première partie formant crochet est un renflement, par exemple un écrou 48, rapporté et fixé à l'extrémité de l'organe de tirage 40. L'écrou 48 est vissé à l'extrémité de la tige 41. L'écrou 48 vient se loger dans une cavité 49 ménagée dans l'arceau 47. La première partie formant crochet, i.e. l'écrou 48, présente une forme convexe mâle venant se loger dans et coopérer avec la deuxième partie formant crochet, i.e. l'arceau 47, présentant une forme concave femelle complémentaire. Par l'adaptation de l'écrou 48 venant en butée contre les parois de la cavité 49 de l'arceau 47, la structure mobile 16, 24, 26, 27 et 29 vient s'autocentrer par rapport à la structure fixe 17, 22, 28 et 31.Favorably, the first hook portion is a bulge, for example a nut 48, attached and attached to the end of the pull member 40. The nut 48 is screwed to the end of the rod 41. The nut 48 is housed in a cavity 49 formed in the arch 47. The first hook portion, ie the nut 48, has a male convex shape which is housed in and cooperate with the second hook portion, ie the hoop 47, having a complementary female concave shape. By adapting the nut 48 abutting against the walls of the cavity 49 of the arch 47, the mobile structure 16, 24, 26, 27 and 29 is self-centering with respect to the fixed structure 17, 22 , 28 and 31.

La première partie formant crochet, i.e. l'écrou 48, possède avantageusement une position réglable en se vissant et en se dévissant à l'extrémité de l'organe de tirage, i.e. la tige 41.The first hook portion, i.e. the nut 48, advantageously has an adjustable position by screwing and unscrewing at the end of the pulling member, i.e. the rod 41.

L'ensemble flanc supérieur 24, outil supérieur 16, arbre supérieur 26, carter supérieur 27 et moteur supérieur 29 est tiré vers le haut P en direction de l'ensemble flanc inférieur 22, outil inférieur 17, arbre inférieur, carter inférieur 28 et moteur inférieur 31.The upper flank assembly 24, upper tool 16, upper shaft 26, upper casing 27 and upper motor 29 is pulled up P towards the lower flank assembly 22, lower tool 17, lower shaft, lower casing 28 and motor. lower 31.

Le dispositif de gaufrage 14 est utilisable pour gaufrer des caractères braille sur des découpes de carton dans la plieuse-colleuse 1. Un premier travail de l'opérateur consiste à choisir les outils 16 et 17 en fonction du message à imprimer sur les découpes défilant dans la plieuse-colleuse 1. Ensuite les outils 16 et 17 sont montés sur leur arbre respectif, et positionnés angulairement et axialement.The embossing device 14 can be used for embossing Braille characters on cardboard blanks in the folder-gluer 1. A first task of the operator is to choose the tools 16 and 17 according to the message to be printed on the cuts scrolling in The folder-gluer 1. Then the tools 16 and 17 are mounted on their respective shaft, and positioned angularly and axially.

Le dispositif 14 permet la mise en oeuvre d'un procédé de réglage de l'intervalle radial entre les deux outils cylindriques rotatifs de gaufrage 16 et 17. L'opérateur va ainsi tout d'abord s'occuper de l'ajustement des deux outils 16 et 17 en fonction de l'épaisseur des découpes de carton défilant dans la plieuse-colleuse 1. Ainsi dans une première étape, la première structure mobile 16, 24, 26, 27 et 29 est poussée T en s'appuyant sur l'armature 19 et 21, pour être rapprochée de la deuxième structure fixe 17, 22, 28 et 31, de façon à ce que l'intervalle radial entre le premier outil supérieur 16 et le deuxième outil inférieur 17 soit ajusté.The device 14 allows the implementation of a method of adjusting the radial gap between the two rotary cylindrical embossing tools 16 and 17. The operator will thus first of all take care of the adjustment of the two tools. 16 and 17 depending on the thickness of the cardboard blanks moving in the folder-gluer 1. Thus in a first step, the first movable structure 16, 24, 26, 27 and 29 is pushed T based on the reinforcement 19 and 21, to be brought closer to the second fixed structure 17, 22, 28 and 31, so that the radial gap between the first upper tool 16 and the second lower tool 17 is adjusted.

Puis l'opérateur va régler avec précision la profondeur de pénétration des picots de l'outil supérieur 16 dans les découpes de carton défilant dans la plieuse-colleuse 1. Ainsi dans une deuxième étape, la première structure mobile 16, 24, 26, 27 et 29 est tirée P en s'appuyant sur l'armature 19 et 21, pour être écartée de la deuxième structure fixe 17, 22, 28 et 31, de façon à ce que l'intervalle radial entre le premier outil supérieur 16 et le deuxième outil inférieur 17 soit réglé finement.Then the operator will adjust precisely the depth of penetration of the pins of the upper tool 16 in the cardboard blanks scrolling in the folder-gluer 1. Thus in a second step, the first movable structure 16, 24, 26, 27 and 29 is pulled P based on the frame 19 and 21, to be spaced from the second fixed structure 17, 22, 28 and 31, so that the radial gap between the first upper tool 16 and the second lower tool 17 be finely tuned.

La présente invention n'est pas limitée aux modes de réalisation décrits et illustrés. De nombreuses modifications peuvent être réalisées, sans pour autant sortir du cadre défini par la portée du jeu de revendications.The present invention is not limited to the embodiments described and illustrated. Many modifications can be made, without departing from the scope defined by the scope of the set of claims.

Le moteur électrique d'entraînement 44 peut être remplacé par une mollette de réglage fin.The electric drive motor 44 can be replaced by a fine adjustment wheel.

Claims (13)

  1. Method for adjusting a radial spacing between two rotating cylindrical embossing tools (16, 17) in an embossing device (14) comprising:
    - an armature (19, 21),
    - a first structure (16, 24, 26, 27, 29) which is movably mounted in translation relative to the armature (19, 21) and which is provided with a first rotating cylindrical tool (16), and
    - a second structure (17, 22, 28, 31) which is mounted in a fixed manner on the armature (19, 21) and which is provided with a second rotating cylindrical tool (17),
    comprising the steps involving:
    - pushing (T) on the first structure (16, 24, 26, 27, 29) in order to move it closer to the second structure (17, 22, 28, 31) by leaning on the armature (19, 21) in order to adjust a radial spacing between the first and second tool (16, 17), and
    - pulling (P) on the first structure (16, 24, 26, 27, 29) in order to move it away from the second structure (17, 22, 28, 31) by leaning on the armature (19, 21) in order to finely adjust the radial spacing between the first and the second tool (16, 17).
  2. Embossing device having two rotating cylindrical tools comprising:
    - an armature (19, 21),
    - a first structure (16, 24, 26, 27, 29) which is movably mounted in translation relative to the armature (19, 21) and which is provided with a first rotating cylindrical tool (16),
    - a second structure (17, 22, 28, 31) which is fixedly mounted on the armature (19, 21) and which is provided with a second rotating cylindrical tool (17),
    - a pushing member (34) which is carried by the armature (19, 21) and which is capable of pushing (T) the first structure (16, 24, 26, 27, 29) in the direction of the second structure (17, 22, 28, 31) in order to adjust a radial spacing between the first and second tool (16, 17), and
    - means for adjusting the radial spacing between the first and second tool (16, 17), characterized in that the adjustment means comprise a pulling member (40) which is carried by the armature (19, 21) and which is capable of applying a traction to the first structure (16, 24, 26, 27, 29) in order to move it away from the second structure (17, 22, 28, 31) in order to finely adjust the radial spacing between the first and the second tool (16, 17).
  3. Device according to Claim 2, characterized in that the pulling member (40) comprises a first portion which forms a hook (48) and which moves into engagement with a second portion which forms a complementary hook (47) which is present on the first structure (16, 24, 26, 27, 29).
  4. Device according to Claim 3, characterized in that the first portion which forms a hook (48) is accommodated in a cavity (49) which is provided in the second portion which forms a complementary hook (47).
  5. Device according to Claim 3 or 4, characterized in that the first portion which forms a hook (48) has a male convex shape which is accommodated in and which cooperates with the second portion which forms a hook (47) which has a complementary female concave shape.
  6. Device according to any one of Claims 3 to 5, characterized in that the first portion which forms a hook (48) is a protuberance which is fixed to the end of the pulling member (40).
  7. Device according to any one of Claims 3 to 6, characterized in that the first portion which forms a hook (48) has a position which can be adjusted at the end of the pulling member (40).
  8. Device according to any one of Claims 3 to 7, characterized in that the second portion which forms a hook is a curved member (47) through which the pulling member (40, 41) extends and which is fixedly joined to the first structure (16, 24, 26, 27, 29).
  9. Device according to any one of Claims 2 to 8, characterized in that the pulling member (40) comprises a threaded rod (41) which is fixed in rotation by the armature (19, 21), the first portion which forms a hook being fixed to an end of the rod (41).
  10. Device according to Claim 9, characterized in that the rod (41) is rotatably driven by a motor (44).
  11. Device according to any one of Claims 2 to 8, characterized in that it comprises an adjustable stop (39) which delimits a maximum travel path of the pushing member (34) and a minimum radial spacing.
  12. Folder-gluer, characterized in that it comprises at least one device (14) according to any one of Claims 2 to 11.
  13. Folder-gluer according to Claim 12, characterized in that the device (14) is installed in an embossing module (6), the device (14) being a device for embossing Braille characters.
EP13719385.0A 2012-05-02 2013-04-17 Method for adjusting the radial clearance between two tools, embossing device and folder-gluer equipped therewith Active EP2844462B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13719385.0A EP2844462B1 (en) 2012-05-02 2013-04-17 Method for adjusting the radial clearance between two tools, embossing device and folder-gluer equipped therewith

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP12003134 2012-05-02
PCT/EP2013/001130 WO2013164066A1 (en) 2012-05-02 2013-04-17 Method for adjusting the radial gap between two tools, embossing device and folder-gluer thus equipped
EP13719385.0A EP2844462B1 (en) 2012-05-02 2013-04-17 Method for adjusting the radial clearance between two tools, embossing device and folder-gluer equipped therewith

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EP2844462A1 EP2844462A1 (en) 2015-03-11
EP2844462B1 true EP2844462B1 (en) 2016-06-01

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EP (1) EP2844462B1 (en)
JP (1) JP6124092B2 (en)
KR (1) KR101724815B1 (en)
CN (1) CN104411481B (en)
BR (1) BR112014027056B1 (en)
ES (1) ES2579381T3 (en)
WO (1) WO2013164066A1 (en)

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WO2023152325A1 (en) 2022-02-14 2023-08-17 Bobst Mex Sa Inspection system for braille characters

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CN105522752B (en) * 2015-12-29 2018-08-21 南京卓能机械设备有限公司 Size applicator
CN109733002B (en) * 2019-01-22 2020-11-13 苏州市启华机电设备有限公司 High-precision marking press for corrugated paper production
WO2025003064A1 (en) 2023-06-26 2025-01-02 Bobst Mex Sa System for repetitive formation of objects from sheet material
WO2025003059A1 (en) 2023-06-26 2025-01-02 Bobst Mex Sa System for repetitive formation of objects from sheet material

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CN2111829U (en) * 1991-09-10 1992-08-05 张干 Folding roller clearance regulater of dinner towel coining mill
DE9400196U1 (en) * 1994-01-07 1994-02-24 Karl Marbach GmbH + Co, 74080 Heilbronn Embossing and fitting system
CH691116A5 (en) * 1995-09-22 2001-04-30 Bobst Sa Method for adjusting the radial gap between two rotating tools and processing station for carrying out the method.
DE102006048480B4 (en) * 2006-10-11 2009-12-31 WINKLER+DüNNEBIER AG Cutting and embossing station
TWI340083B (en) * 2006-12-14 2011-04-11 Bobst Sa Braille printing device
ES2347887T3 (en) 2006-12-14 2010-11-22 Bobst Sa DEVICE FOR PRINTING IN BRAILLE.
ES2462591T3 (en) 2010-08-31 2014-05-26 Heidelberger Druckmaschinen Ag Portable device
EP2422969B1 (en) * 2010-08-31 2013-09-11 Heidelberger Druckmaschinen AG Folding box gluing machine

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Publication number Priority date Publication date Assignee Title
WO2023152325A1 (en) 2022-02-14 2023-08-17 Bobst Mex Sa Inspection system for braille characters

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BR112014027056A2 (en) 2017-06-27
CN104411481A (en) 2015-03-11
BR112014027056B1 (en) 2021-07-20
WO2013164066A1 (en) 2013-11-07
KR101724815B1 (en) 2017-04-07
CN104411481B (en) 2019-04-23
US20150126350A1 (en) 2015-05-07
US9840057B2 (en) 2017-12-12
JP2015525142A (en) 2015-09-03
JP6124092B2 (en) 2017-05-10
KR20150013646A (en) 2015-02-05
ES2579381T3 (en) 2016-08-10
EP2844462A1 (en) 2015-03-11

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