EP3227068B1 - Unit for transforming a planar substrate, and methods for removing and mounting a rotary tool in a transformation unit - Google Patents

Unit for transforming a planar substrate, and methods for removing and mounting a rotary tool in a transformation unit Download PDF

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Publication number
EP3227068B1
EP3227068B1 EP15805399.1A EP15805399A EP3227068B1 EP 3227068 B1 EP3227068 B1 EP 3227068B1 EP 15805399 A EP15805399 A EP 15805399A EP 3227068 B1 EP3227068 B1 EP 3227068B1
Authority
EP
European Patent Office
Prior art keywords
bearings
tool
screw
rotary
holder column
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
EP15805399.1A
Other languages
German (de)
French (fr)
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EP3227068A1 (en
Inventor
Boris BÉGUIN
Philippe Clément
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
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Bobst Mex SA
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Filing date
Publication date
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Publication of EP3227068A1 publication Critical patent/EP3227068A1/en
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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
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D7/2628—Means for adjusting the position of the cutting member
    • B26D7/265—Journals, bearings or supports for positioning rollers or cylinders relatively to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • 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
    • B31B50/14—Cutting, e.g. perforating, punching, slitting or trimming
    • 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
    • B31B50/14—Cutting, e.g. perforating, punching, slitting or trimming
    • B31B50/16—Cutting webs
    • 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
    • B31B50/25—Surface scoring
    • 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
    • B31F1/08—Creasing
    • B31F1/10—Creasing by rotary tools
    • 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
    • B31B2100/00—Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs
    • B31B2100/002—Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs characterised by the shape of the blank from which they are formed
    • 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
    • B31B50/14—Cutting, e.g. perforating, punching, slitting or trimming
    • B31B50/146—Cutting, e.g. perforating, punching, slitting or trimming using tools mounted on a drum
    • 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
    • B31B50/25—Surface scoring
    • B31B50/256—Surface scoring using tools mounted on a drum
    • 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
    • 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
    • B31F2201/0771—Other aspects of the embossing operations
    • B31F2201/0776—Exchanging embossing tools

Definitions

  • the present invention relates to a transformation unit for a planar support.
  • the invention also relates to a method of dismantling and a method of mounting at least one rotary tool in a processing unit.
  • a support converting machine is intended for the manufacture of packaging.
  • an initial flat support such as a continuous strip of cardboard, is unwound and printed by a printing station comprising one or more printing units.
  • the flat support is then transferred to an introduction group, then to an embossing group, possibly followed by an upsetting group.
  • the flat support is then cut from a cutting group. After ejection of the waste zones, the poses obtained are sectioned to obtain individualized boxes.
  • the rotary transformation, embossing, upsetting, cutting, waste ejection or printing units respectively comprise an upper cylindrical transformation tool, and a lower cylindrical transformation tool, between which the flat support circulates in order to be transformed.
  • the rotary transforming tools rotate at the same speed, but in the opposite direction to each other.
  • the flat support passes through the gap between the rotary tools which form a relief by embossing, form a relief by upsetting, cut the flat support in poses in rotary die-cut, eject the waste, or which print a pattern during printing .
  • the operations of changing cylinders are long and tedious.
  • the operator mechanically disconnects the cylinder to remove it from its drive mechanism. Then the operator takes the cylinder out of the transformation machine, and puts the new cylinder back in the transformation machine by reconnecting it to its drive.
  • the weight of a cylinder is important, of the order of 50 kg to 2,000 kg. To remove it, the operator lifts it using a hoist.
  • An object of the present invention is to provide a tool holder upright for a transformation group of a planar support, a transformation group, a method for removing a rotary tool and an assembly method which at least partly solve the drawbacks. of the state of the art.
  • the vertical mobility of the two bearings makes it possible to adjust the spacing between the rotary tools, in particular to adjust the gap between the tools.
  • the gap between the upper tool and the lower tool can be adjusted during production.
  • this makes it possible to move the rotary tools by drives having a precision of movement adjustment and a high performance holding rigidity, which are important constraints to be observed for the good performance of the transformation operations.
  • the concordance of the cutting, embossing and upsetting zones can thus in particular be ensured.
  • Cutting, embossing or upsetting operations are also carried out with the same quality over the entire surface of the flat support.
  • the screw device comprises at least one screw extending in the vertical direction and comprising an upper helix cooperating with the bearing in which the upper bearing is formed and a lower helix cooperating with the bearing in which is formed the lower bearing, the direction of the upper propeller being reversed with respect to the direction of the lower propeller.
  • the screw device allows the simultaneous ascent and descent of the two bearings at the same speed.
  • the use of screw devices allows the displacement of high loads such as those of rotary tools while offering high-performance adjustment precision and with good holding rigidity.
  • Another advantage is that the screw devices are robust and can maintain the vertical positioning of the bearings without drift even under the effect of vibrations which may occur in the frame of the transformation group.
  • the screw device comprises at least one roller screw.
  • the large number of contact points allows the roller screws to withstand heavy loads while offering high-performance translational movement adjustment precision.
  • the diameter of the screw can therefore be large relative to the screw pitch which can be small, which makes it possible to withstand high loads while having excellent movement adjustment precision, and which makes it possible to guarantee irreversibility of the vertical movement of the bearings.
  • the screw device comprises a first and a second screw arranged parallel to one another, on each side of the upper and lower bearings.
  • the two screws ensure a balanced and reinforced hold of the bearings.
  • the screw device comprises a motorized device configured to drive the simultaneous rotation of the first and the second screw.
  • the motorized device comprises a first and a second toothed belt, for synchronous transmission without slipping.
  • the first toothed belt is driven in rotation by a motor axis of the motorized device and driving in rotation a first pulley of the screw device, mounted at the end of the first screw.
  • the second toothed belt is also driven in rotation by the motor axis and driving in rotation a second pulley of the screw device, mounted at the end of the second screw.
  • the bearings have substantially identical shapes, mounted opposite.
  • the bearings have for example respective general shapes elongated in the longitudinal direction of movement of the flat support.
  • the bearings and a body of the tool-holder upright comprise complementary means for guiding in vertical translation.
  • at least one bearing is movable outside a central passage allowing the extraction or insertion of at least one rotary tool.
  • the transformation group comprises a tool holder upright movable in translation in a direction parallel to the axis of the rotary tools, between an operational position in which the upper and lower bearings can cooperate with the ends of the tools.
  • rotary and a maintenance position in which the tool holder post is moved away from the operational position.
  • the mobility of the tool holder upright allows the ends of the rotating tools to be disengaged from their respective bearings, so that they can then be offset vertically from each other so as to clear a central passage allowing access to the bearings.
  • rotary tools It also makes it possible to offset the bearings from one another during the maintenance phase, once the bearings on the driver's side have been disengaged from the rotating tools, to free a central passage allowing access to the rotating tools.
  • the mobile tool-holder upright is for example the tool-holder upright arranged at the front, on the driver's side, which is not encumbered by the motorized means for driving the rotary tools.
  • the tool holder upright and a base of the transformation unit include complementary translational guiding means.
  • the transformation unit comprises a processing unit configured to control independently on the one hand, the vertical displacement of the bearings of a tool holder upright. of the transformation group arranged at the front and on the other hand, the vertical displacement of the bearings of a tool holder upright of the transformation group arranged at the rear.
  • the upper and lower bearings movable vertically in opposite directions, on either side of the longitudinal direction of movement of the plane support, thus allow the simple assembly / disassembly of the rotary tools while ensuring a rigid and precise holding of the rotary tools in functioning.
  • the longitudinal, vertical and transverse directions indicated on the Fig. 2 are defined by the trihedron L, V, T.
  • the transverse direction T is the direction perpendicular to the direction of longitudinal displacement L of the plane support.
  • the horizontal plane corresponds to the plane L, T.
  • the front and rear positions are defined with respect to the transverse direction T, as being respectively the driver's side and the opposite driver's side.
  • a line for converting a flat support such as cardboard or continuous strip paper wound into a reel, allows various operations to be carried out and to obtain packaging such as folding boxes.
  • the converting line comprises, arranged one after the other in the running order of the flat support, an unwinding station 1, several printing units 2, one or more embossing units in series followed by a or several groups of upsetting in series 3, followed by a rotary cutting unit 4 or plate cutting, and a receiving station 5 for the manufactured objects.
  • the processing group 7 comprises an upper rotary tool 10 and a lower rotary tool 11, which modify the flat support by printing, embossing, upsetting, cutting, ejecting waste, etc., in order to obtain a package.
  • the rotary tools 10 and 11 are mounted parallel to each other in the transformation group 7, one above the other, and extend in the transverse direction T, which is also the direction of the axes of rotation A1 and A2 of the rotary tools 10 and 11 (see Fig. 2 ).
  • the rear ends of the rotary tools 10 and 11, on the opposite driver's side, are driven in rotation by motorized drive means.
  • the rotary tools 10 and 11 rotate in opposite directions around each of the axes of rotation A1 and A2 (arrows Fs and Fi).
  • the flat support passes through the gap located between the rotary tools 10 and 11, to be embossed therein, and / or upset, and / or cut, and / or printed.
  • At least one of the two rotary tools, the upper rotary tool 10 or the lower rotary tool 11, comprises a mandrel 12 and a removable sleeve 13, insertable on the mandrel 12 in the transverse direction T ( Fig. 2 , Arrow G).
  • the sleeve 13 has a generally hollow and cylindrical shape.
  • the mandrel 12 comprises a cylindrical core, a front end, and a rear end, located on either side of the cylindrical core.
  • the transformation group 7 comprises a front upper bearing 14, intended to support the front end of the upper rotary tool 10, and a front lower bearing 15, intended to support the front end of the lower rotary tool 11.
  • the transformation group 7 comprises a rear upper bearing 16, intended to support the rear end of the upper rotary tool 10, and a rear lower bearing 17, intended to support the rear end of the lower rotary tool 11.
  • the bearings upper and lower 14, 15, 16 and 17 are aligned two by two vertically one above the other.
  • the rear ends of the rotary tools 10 and 11, on the side opposite the driver, are driven in rotation by a respective motorized means 18.
  • the transformation group 7 comprises a tool holder upright 19 arranged at the front of the frame and a tool holder upright 20 arranged at the rear of the frame.
  • the tool-holder uprights 19 and 20 extend vertically.
  • At least the body 9 of the tool holder upright 19 arranged at the front has the form of a frame with a central passage 35.
  • the tool-holder uprights 19 and 20 respectively comprise an upper front bearing 14 and rear 16 and a lower front bearing 15 and rear 17.
  • the bearings 14, 15, 16 and 17 are movable vertically in opposite directions, on both sides. another of the longitudinal direction L of displacement of the plane support.
  • the movements of stages 14, 15, 16 and 17 are represented by the double arrows Pa and Pr on the Fig. 3 .
  • the tool holder upright 19 and 20 can also be provided with a common drive of the bearings 14, 15, 16 and 17 allowing simultaneous displacement of the bearings 14, 15, 16 and 17 by the same distance in opposite directions.
  • the upper and lower bearings 14, 15, 16 and 17 can be moved vertically symmetrically, simultaneously and at the same speed.
  • the common drive comprises a screw device 25.
  • the bearings 14, 16 and 15, 17 are mounted one above the other two by two, on a screw device 25 of a respective tool holder post 19 and 20, so that the rotation of the screw device 25 causes the bearings 14, 16 and 15, 17 to move linearly in opposite vertical directions V.
  • the screw device 25 comprises at least one screw 26a, 26b extending in the vertical direction V and successively passing through the bearings 14, 16 and 15, 17 having an associated thread.
  • the screw 26a and 26b comprises an upper propeller cooperating with the upper bearing 14 or 16, and a lower propeller cooperating with the lower bearing 15 or 17.
  • the direction of the upper propeller is reversed with respect to the direction of the lower propeller, so that the rotation of the screw 26a and 26b drives the upper bearing 14 or 16 upwards and the lower bearing 15 or 17 downwards.
  • the screw devices 25 allow the displacement of high loads such as those of the rotary tools 10 and 11 while offering high-performance adjustment precision of the movement and with good holding rigidity. Another advantage is that the screw devices 25 are robust and can maintain the vertical positioning of the bearings 14, 15, 16 and 17 without drift even under the effect of vibrations which may occur in the frame of the transformation group 7.
  • the screw 26a and 26b has for example a diameter of between 40mm and 60mm, such as of the order of 50mm, and a thread of between 0.5mm and 2mm, such as that of the order of 1mm.
  • the screw has, for example, a screw thread, the manufacturing tolerance of which is less than ten microns.
  • the diameter of the screw 26a, 26b can therefore be large relative to the screw pitch which is small, which allows the support of high loads while having excellent precision in the adjustment of the movement.
  • the screw 26a and 26b is a roller screw, also called satellite roller screw or planetary roller screw.
  • the roller screws have nuts 27 which have rollers, arranged in a cylindrical ring of the respective bearing 14, 15, 16 and 17, around the screw 26a and 26b.
  • the rollers of the nuts 27 perform the rolling function (see Fig. 6 ).
  • the large number of contact points allows the roller screws to withstand high loads and guarantee high rigidity.
  • the screw device 25 comprises (visible on the exemplary embodiment of Figs. 5, 6 , 7 and 8 ) a first and a second screw 26a and 26b arranged parallel to each other, on each side of the upper and lower bearings 14, 15 or 16 and 17 passing through the bearings 14, 16 or 15, 17. Both screws 26a and 26b thus arranged ensure a balanced and reinforced hold of the respective bearings 14, 16, 15, 17.
  • the bearings 14, 16 or 15, 17 have substantially identical shapes, mounted opposite.
  • the bearings 14, 16 or 15, 17 have for example respective general shapes elongated in the longitudinal direction L of movement of the flat support.
  • the screw device 25 comprises a motorized device having a motor 29, the motor axis 31 of which is connected to the screws 26a and 26b so as to drive their simultaneous rotation.
  • the motorized device comprises for example a first and a second synchronous belt 30a and 30b.
  • the first belt 30a is driven by the motor shaft 31 and drives in rotation a first pulley 32a of the screw device 25, mounted at the end of the first screw 26a.
  • the first pulley 32a is integral in rotation with the first screw 26a.
  • the second belt 30b is also driven by the motor shaft 31, and drives in rotation a second pulley 32b of the screw device 25, mounted at the end of the second screw 26b.
  • the second pulley 32b is integral in rotation with the second screw 26b.
  • the rotation of the motor shaft 31 causes the simultaneous rotation of the first and second screw 26a and 26b of the screw device 25 and thus the ascent / descent at the same speed of the two bearings 14, 15, 16 and 17.
  • the device motorized ensures that screws 26a and 26b rotate at the same speed so that the respective bearing 14, 15, 16 and 17 does not go down / up askew.
  • the bearings 14, 15, 16 and 17 and the body 9 of the tool holder upright 19 and 20 may also include complementary means for guiding in vertical translation V. More precisely (see Fig. 6 ), at least one vertical guide rail 33 is for example arranged along the body 9 of the tool holder upright 19 or 20.
  • the bearings 14, 15, 16 and 17 comprise a complementary vertical guide jaw 34 in screw form -à-à-vis (or vice versa).
  • two vertical guide rails 34 can be arranged in parallel between the body 9 and the screw device 25, on each side of the upper and lower bearings 14, 15, 16 and 17.
  • one of the tool-holder uprights 19 and 20 can be movable in translation in a direction parallel to the axis of the rotary tools 10 and 11 (arrows C on the Fig. 3 ), that is to say mobile in transverse translation, between an operational position in which the upper and lower bearings 14, 15, 16 and 17 can cooperate with the ends of the upper 10 and lower 11 rotary tools, and a position of maintenance in which the tool holder post 19 is moved away from the operational position.
  • the mobile tool-holder upright is for example the tool-holder upright 19 arranged at the 'front of the frame of the transformation group 7, driver's side, because it is not encumbered by the motorized means 18 for driving the rotary tools 10 and 11.
  • the tool holder upright 20 arranged at the rear 36 of the frame is fixed.
  • the tool holder upright 19 and a base 36 of the transformation unit 7 may include complementary means for guiding in transverse translation T. More precisely, the tool holder upright 19 has for example at least one transverse slide 37 facing each other. screw of a complementary transverse guide rail 38 arranged in the upper part of the base 36 and extending in the transverse direction T (or vice versa). For example two transverse guide rails 38 can be arranged in parallel under the tool holder upright 19 arranged at the front.
  • At least one of the bearings 14, 15, 16 and 17 is movable outside the central passage 35 of the tool holder upright 19, allowing the extraction or insertion of at least one rotary tool 10 and 11.
  • the transverse mobility of the tool holder post 19 allows the ends of the rotary tools 10 and 11 to be disengaged from their respective bearings 14 and 15, so that they can then be shifted vertically from each other, so as to clear a central passage 35 allowing access to the rotary tools 10 and 11.
  • the upper or lower front bearings 14 and 15 can be movable between a close position (see Fig. 7 ) for example when the transformation group 7 is at rest and does not include rotary tools 10 and 11, or only chucks 12, and a maintenance position or during a change of work, in which the two upper bearings and lower front 14, 15 are spaced from each other, leaving a central passage 35 open allowing the extraction or insertion of rotary tools 10 and 11 complete, sleeves 13 or chucks 12 (see Fig. 8 ).
  • the transformation unit 7 comprises for example a processing unit configured to control independently on the one hand, the vertical displacement of the bearing support carriages 14 and 16 of the tool holder upright 19 arranged at the front and on the other hand, the vertical displacement of the bearings 15 and 17 of the tool holder upright 20 arranged at the rear.
  • the operator moves the bearings 14 and 16 of the tool holder upright 19 arranged at the front, vertically in opposite directions, with a large amplitude, so that they are positioned outside a central passage 35 allowing the '' extraction of the rotary tools 10 and 11 (arrows F3 in Fig. 11 ).
  • the operator can then access the rotary tools 10 and 11 and change a rotary tool 10 and 11, a sleeve 13 or a mandrel 12 (arrows F4 in Fig. 12 ).
  • the assembly and disassembly of the rotary tools 10 and 11 are thus facilitated.
  • the vertical mobility of the bearings 14, 15, 16 and 17 makes it possible to adjust the spacing between the rotary tools 10 and 11 in particular to adjust the radial interval between the tools 10 and 11, this in production or at standstill, while while maintaining rigidity. It also makes it possible to offset the bearings 14, 15, 16 and 17 from one another during the maintenance phase, once the bearings 14, 15, 16 and 17 have been disengaged from the rotary tools 10 and 11, to free a central passage. 35 allowing access to the rotary tools 10 and 11.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Milling Processes (AREA)
  • Machine Tool Units (AREA)
  • Details Of Cutting Devices (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Description

La présente invention concerne un groupe de transformation d'un support plan. L'invention concerne également un procédé de démontage et un procédé de montage d'au moins un outil rotatif dans un groupe de transformation.The present invention relates to a transformation unit for a planar support. The invention also relates to a method of dismantling and a method of mounting at least one rotary tool in a processing unit.

Une machine de transformation de support est destinée à la fabrication d'emballages. Dans cette machine, un support plan initial, tel qu'une bande continue de carton, est déroulé et imprimé par une station d'impression comprenant un ou plusieurs groupes imprimeurs. Le support plan est ensuite transféré dans un groupe d'introduction, puis dans un groupe de gaufrage, éventuellement suivi par un groupe de refoulage. Le support plan est ensuite découpé dans un groupe de découpe. Après éjection des zones de déchets, les poses obtenues sont sectionnées pour obtenir des boîtes individualisées.A support converting machine is intended for the manufacture of packaging. In this machine, an initial flat support, such as a continuous strip of cardboard, is unwound and printed by a printing station comprising one or more printing units. The flat support is then transferred to an introduction group, then to an embossing group, possibly followed by an upsetting group. The flat support is then cut from a cutting group. After ejection of the waste zones, the poses obtained are sectioned to obtain individualized boxes.

Les groupes rotatifs de transformation, de gaufrage, refoulage, découpe, éjection de déchets, ou imprimeur, comportent respectivement un outil supérieur cylindrique de transformation, et un outil inférieur cylindrique de transformation, entre lesquels circule le support plan pour être transformé. En fonctionnement, les outils rotatifs de transformation tournent à la même vitesse, mais en sens inverse l'un de l'autre. Le support plan passe dans l'interstice situé entre les outils rotatifs qui façonnent un relief par gaufrage, façonnent un relief par refoulage, découpent le support plan en poses en découpe rotative, éjectent les déchets, ou qui impriment un motif lors de l'impression.The rotary transformation, embossing, upsetting, cutting, waste ejection or printing units respectively comprise an upper cylindrical transformation tool, and a lower cylindrical transformation tool, between which the flat support circulates in order to be transformed. In operation, the rotary transforming tools rotate at the same speed, but in the opposite direction to each other. The flat support passes through the gap between the rotary tools which form a relief by embossing, form a relief by upsetting, cut the flat support in poses in rotary die-cut, eject the waste, or which print a pattern during printing .

Les opérations de changement de cylindres s'avèrent longues et fastidieuses. L'opérateur déconnecte mécaniquement le cylindre pour l'enlever de son mécanisme d'entraînement. Puis l'opérateur sort le cylindre en dehors de la machine de transformation, et replace le nouveau cylindre dans la machine de transformation en le reconnectant à son entraînement. Le poids d'un cylindre est important, de l'ordre de 50 kg à 2'000 kg. Pour le sortir, l'opérateur le soulève à l'aide d'un palan.The operations of changing cylinders are long and tedious. The operator mechanically disconnects the cylinder to remove it from its drive mechanism. Then the operator takes the cylinder out of the transformation machine, and puts the new cylinder back in the transformation machine by reconnecting it to its drive. The weight of a cylinder is important, of the order of 50 kg to 2,000 kg. To remove it, the operator lifts it using a hoist.

En raison de son poids assez élevé, un changement de cylindre n'est pas très rapide à effectuer. En outre, de nombreux changements d'outils peuvent être nécessaires pour obtenir de très nombreuses boîtes différentes les unes des autres. Ces outils doivent être commandés longtemps à l'avance, ce qui devient incompatible avec les changements de productions demandes actuellement. De plus, des outils sont relativement coûteux à réaliser, et ils ne deviennent rentables qu'avec une production extrêmement importante.Due to its fairly heavy weight, a cylinder change is not very quick to perform. In addition, many tool changes may be necessary to obtain many, many different boxes. These tools must be ordered well in advance, which becomes incompatible with the changes of productions currently requested. In addition, tools are relatively expensive to produce, and they only become profitable with extremely high production.

Ainsi certains groupes de transformation prévoient l'utilisation d'outils rotatifs composés d'un mandrin et d'un manchon amovible porteur de forme assurant la transformation, insérable sur le mandrin. Il suffit alors de changer le manchon, plutôt que la totalité de l'outil rotatif. Ceci facilite le changement d'outil du fait du faible poids du manchon et diminue les coûts, car le manchon est moins onéreux.Thus certain processing groups provide for the use of rotary tools composed of a mandrel and a removable sleeve bearing shape ensuring the transformation, which can be inserted on the mandrel. It is then sufficient to change the sleeve, rather than the entire rotary tool. This facilitates the tool change due to the low weight of the sleeve and reduces costs, because the sleeve is less expensive.

Les utilisateurs souhaitent effectuer des changements plus rapides d'outils, afin de faire face aux demandes de plus en plus ponctuelles d'impression et de découpe en petites séries de leurs clients. En outre, les outils rotatifs doivent pouvoir être maintenus avec une bonne rigidité et avec précision pour la bonne réalisation des opérations de transformation.Users want to make faster tool changes, in order to meet the increasingly ad hoc requests for printing and cutting in small series of their customers. In addition, the rotary tools must be able to be held with good rigidity and with precision for the good performance of the transformation operations.

Document US 2 706 524 décrit un entraînement commun de paliers permettant un déplacement simultané des paliers supérieur et inférieur d'une même distance dans des directions opposées, l'entraînement commun comportant une vis et deux bras pivotants dans lesquels s'engagent les extrémités des outils une extrémité de chaque bras étant déplaçable verticalement par une vis commune.Document US 2,706,524 describes a common drive of bearings allowing simultaneous movement of the upper and lower bearings by the same distance in opposite directions, the common drive comprising a screw and two pivoting arms in which the ends of the tools engage at one end of each arm being movable vertically by a common screw.

Exposé de l'inventionDisclosure of the invention

Un but de la présente invention est de proposer un montant porte-outil pour groupe de transformation d'un support plan, un groupe de transformation, un procédé de démontage d'outil rotatif et un procédé de montage qui résolvent au moins en partie les inconvénients de l'état de la technique.An object of the present invention is to provide a tool holder upright for a transformation group of a planar support, a transformation group, a method for removing a rotary tool and an assembly method which at least partly solve the drawbacks. of the state of the art.

A cet effet, la présente invention a pour objet un groupe de transformation d'un support plan, comprenant:

  • deux paliers supérieurs, destinés chacun à supporter une extrémité d'un outil rotatif supérieur, et deux paliers inférieurs, destinés chacun à supporter une extrémité d'un outil rotatif inférieur, le support plan étant destiné à se déplacer longitudinalement entre l'outil rotatif supérieur et l'outil rotatif inférieur, les paliers supérieurs et inférieurs étant mobiles verticalement dans des directions opposées, de part et d'autre de la direction longitudinale de déplacement du support plan, et
  • un entraînement commun des paliers supérieurs et inférieurs permettant un déplacement simultané des paliers supérieurs et inférieurs d'une même distance dans des directions opposées, et comportant un dispositif à vis, les paliers supérieurs et inférieurs étant montés l'un au-dessus de l'autre sur le dispositif à vis, de sorte que la rotation du dispositif à vis entraîne en déplacement linéaire les paliers supérieurs et inférieurs dans des directions opposées.
To this end, the present invention relates to a group for transforming a flat support, comprising:
  • two upper bearings, each intended to support one end of an upper rotary tool, and two lower bearings, each intended to support one end of a lower rotary tool, the planar support being intended to move longitudinally between the upper rotary tool and the lower rotary tool, the upper and lower bearings being movable vertically in opposite directions, on either side of the longitudinal direction of movement of the plane support, and
  • a common drive of the upper and lower bearings allowing simultaneous movement of the upper and lower bearings by the same distance in opposite directions, and comprising a screw device, the upper and lower bearings being mounted one above the another on the screw device, so that the rotation of the screw device linearly drives the upper and lower bearings in opposite directions.

La mobilité verticale des deux paliers permet d'ajuster l'écartement entre les outils rotatifs notamment pour régler l'interstice entre les outils. Le gap entre l'outil supérieur et l'outil inférieur peu être ajusté pendant la production. En outre, cela permet de déplacer les outils rotatifs par des entraînements ayant une précision de réglage du mouvement et une rigidité de maintien performants, qui sont des contraintes importantes à respecter pour la bonne réalisation des opérations de transformation. La concordance des zones de découpe, de gaufrage et de refoulage peut être ainsi notamment assurée. Les opérations de découpe, gaufrage ou refoulage sont également réalisées avec la même qualité sur toute la surface du support plan.The vertical mobility of the two bearings makes it possible to adjust the spacing between the rotary tools, in particular to adjust the gap between the tools. The gap between the upper tool and the lower tool can be adjusted during production. In addition, this makes it possible to move the rotary tools by drives having a precision of movement adjustment and a high performance holding rigidity, which are important constraints to be observed for the good performance of the transformation operations. The concordance of the cutting, embossing and upsetting zones can thus in particular be ensured. Cutting, embossing or upsetting operations are also carried out with the same quality over the entire surface of the flat support.

Selon un exemple de réalisation, le dispositif à vis comporte au moins une vis s'étendant dans la direction verticale et comportant une hélice supérieure coopérant avec le palier dans lequel est ménagé le palier supérieur et une hélice inférieure coopérant avec le palier dans lequel est ménagé le palier inférieur, le sens de l'hélice supérieure étant inversé par rapport au sens de l'hélice inférieure.According to an exemplary embodiment, the screw device comprises at least one screw extending in the vertical direction and comprising an upper helix cooperating with the bearing in which the upper bearing is formed and a lower helix cooperating with the bearing in which is formed the lower bearing, the direction of the upper propeller being reversed with respect to the direction of the lower propeller.

Le dispositif à vis permet la montée et descente simultanée et à même vitesse des deux paliers. En outre, l'utilisation de dispositifs à vis permet le déplacement de fortes charges telles que celles des outils rotatifs tout en offrant une précision de réglage du mouvement performante et avec une bonne rigidité de maintien. Un autre avantage est que les dispositifs à vis sont robustes et peuvent maintenir le positionnement vertical des paliers sans dérive même sous l'effet de vibrations pouvant survenir dans le bâti du groupe de transformation.The screw device allows the simultaneous ascent and descent of the two bearings at the same speed. In addition, the use of screw devices allows the displacement of high loads such as those of rotary tools while offering high-performance adjustment precision and with good holding rigidity. Another advantage is that the screw devices are robust and can maintain the vertical positioning of the bearings without drift even under the effect of vibrations which may occur in the frame of the transformation group.

Selon un exemple de réalisation, le dispositif à vis comporte au moins une vis à rouleaux. Le grand nombre de points de contact permet aux vis à rouleaux de supporter de fortes charges tout en offrant une précision de réglage du mouvement en translation performante. Le diamètre de la vis peut donc être important relativement au pas de vis qui peut être faible, ce qui permet de supporter de fortes charges tout en ayant une excellente précision de réglage du mouvement, et ce qui permet de garantir une irréversibilité du mouvement vertical des paliers.According to an exemplary embodiment, the screw device comprises at least one roller screw. The large number of contact points allows the roller screws to withstand heavy loads while offering high-performance translational movement adjustment precision. The diameter of the screw can therefore be large relative to the screw pitch which can be small, which makes it possible to withstand high loads while having excellent movement adjustment precision, and which makes it possible to guarantee irreversibility of the vertical movement of the bearings.

Selon l'invention, le dispositif à vis comporte une première et une deuxième vis agencées parallèlement l'une par rapport à l'autre, de chaque côté des paliers supérieur et inférieur. Les deux vis assurent une tenue équilibrée et renforcée des paliers. Selon un exemple de réalisation, le dispositif à vis comporte un dispositif motorisé configuré pour entraîner la rotation simultanée de la première et de la deuxième vis.According to the invention, the screw device comprises a first and a second screw arranged parallel to one another, on each side of the upper and lower bearings. The two screws ensure a balanced and reinforced hold of the bearings. According to an exemplary embodiment, the screw device comprises a motorized device configured to drive the simultaneous rotation of the first and the second screw.

Selon un exemple de réalisation, le dispositif motorisé comporte une première et une deuxième courroie crantée, pour une transmission synchrone sans glissement. La première courroie crantée est entraînée en rotation par un axe moteur du dispositif motorisé et entrainant en rotation une première poulie du dispositif à vis, montée à l'extrémité de la première vis. La deuxième courroie crantée est également entraînée en rotation par l'axe moteur et entraînant en rotation une deuxième poulie du dispositif à vis, montée à l'extrémité de la deuxième vis.According to an exemplary embodiment, the motorized device comprises a first and a second toothed belt, for synchronous transmission without slipping. The first toothed belt is driven in rotation by a motor axis of the motorized device and driving in rotation a first pulley of the screw device, mounted at the end of the first screw. The second toothed belt is also driven in rotation by the motor axis and driving in rotation a second pulley of the screw device, mounted at the end of the second screw.

Selon un exemple de réalisation, les paliers présentent des formes sensiblement identiques, montées en regard. Les paliers présentent par exemple des formes générales respectives allongées dans la direction longitudinale de déplacement du support plan. Ces modes de réalisation des paliers permettent de concentrer les forces exercées sur le montant porte-outil au niveau des paliers, assurant une bonne rigidité de maintien des outils rotatifs.According to an exemplary embodiment, the bearings have substantially identical shapes, mounted opposite. The bearings have for example respective general shapes elongated in the longitudinal direction of movement of the flat support. These embodiments of the bearings make it possible to concentrate the forces exerted on the tool holder upright at the level of the bearings, ensuring good holding rigidity for the rotating tools.

Selon un exemple de réalisation, les paliers et un corps du montant porte-outil comportent des moyens complémentaires de guidage en translation verticale. Selon un exemple de réalisation, au moins un palier est mobile hors d'un passage central permettant l'extraction ou l'insertion d'au moins un outil rotatif.According to an exemplary embodiment, the bearings and a body of the tool-holder upright comprise complementary means for guiding in vertical translation. According to an exemplary embodiment, at least one bearing is movable outside a central passage allowing the extraction or insertion of at least one rotary tool.

Selon un exemple de réalisation, le groupe de transformation comporte un montant porte-outil mobile en translation dans une direction parallèle à l'axe des outils rotatifs, entre une position opérationnelle dans laquelle les paliers supérieur et inférieur peuvent coopérer avec les extrémités d'outils rotatifs et une position de maintenance dans laquelle le montant porte-outil est écarté de la position opérationnelle. La mobilité du montant porte-outil permet de désengager les extrémités des outils rotatifs de leurs paliers respectifs, de sorte que ceux-ci puissent être ensuite décalés verticalement l'un de l'autre de manière à dégager un passage central permettant l'accès aux outils rotatifs. Elle permet également de décaler les paliers l'un de l'autre en phase de maintenance, une fois les paliers côté conducteur désengagés des outils rotatifs, pour libérer un passage central permettant l'accès aux outils rotatifs.According to an exemplary embodiment, the transformation group comprises a tool holder upright movable in translation in a direction parallel to the axis of the rotary tools, between an operational position in which the upper and lower bearings can cooperate with the ends of the tools. rotary and a maintenance position in which the tool holder post is moved away from the operational position. The mobility of the tool holder upright allows the ends of the rotating tools to be disengaged from their respective bearings, so that they can then be offset vertically from each other so as to clear a central passage allowing access to the bearings. rotary tools. It also makes it possible to offset the bearings from one another during the maintenance phase, once the bearings on the driver's side have been disengaged from the rotating tools, to free a central passage allowing access to the rotating tools.

Le montant porte-outil mobile est par exemple le montant porte-outil agencé à l'avant, côté conducteur, qui n'est pas encombré par les moyens motorisés d'entrainement des outils rotatifs. Selon un exemple de réalisation, le montant porte-outil et un socle du groupe de transformation comportent des moyens complémentaires de guidage en translation. Selon un exemple de réalisation, le groupe de transformation comporte une unité de traitement configurée pour piloter de manière indépendante d'une part, le déplacement vertical des paliers d'un montant porte-outil du groupe de transformation agencé à l'avant et d'autre part, le déplacement vertical des paliers d'un montant porte-outil du groupe de transformation agencé à l'arrière.The mobile tool-holder upright is for example the tool-holder upright arranged at the front, on the driver's side, which is not encumbered by the motorized means for driving the rotary tools. According to an exemplary embodiment, the tool holder upright and a base of the transformation unit include complementary translational guiding means. According to an exemplary embodiment, the transformation unit comprises a processing unit configured to control independently on the one hand, the vertical displacement of the bearings of a tool holder upright. of the transformation group arranged at the front and on the other hand, the vertical displacement of the bearings of a tool holder upright of the transformation group arranged at the rear.

L'invention a encore pour objet un procédé de démontage d'au moins un outil rotatif dans un groupe de transformation tel que décrit et revendiqué ci-après, comprenant les étapes suivantes consistant:

  • à déplacer verticalement dans des directions opposées, les paliers supérieurs et inférieurs,
  • à décaler le montant porte-outil agencé à l'avant, de sorte que les paliers supérieur et inférieur soient désengagés des extrémités des outils rotatifs supérieur et inférieur, puis
  • à déplacer verticalement dans des directions opposées, les paliers supérieur et inférieur avant du montant porte-outil agencé à l'avant, de sorte que les paliers soient positionnés hors d'un passage central permettant l'extraction des outils rotatifs.
A further subject of the invention is a method for dismantling at least one rotary tool in a processing unit as described and claimed below, comprising the following steps consisting of:
  • to move vertically in opposite directions, the upper and lower bearings,
  • shifting the tool holder post arranged at the front, so that the upper and lower bearings are disengaged from the ends of the upper and lower rotary tools, then
  • vertically moving in opposite directions, the upper and lower front bearings of the tool holder post arranged at the front, so that the bearings are positioned outside a central passage allowing the extraction of the rotary tools.

L'invention a encore pour objet un procédé de montage d'au moins un outil rotatif dans un groupe de transformation telle que tel que décrit et revendiqué ci-après, comprenant les étapes suivantes consistant:

  • à déplacer verticalement l'un vers l'autre, les paliers avant du montant porte-outil agencé à l'avant, puis
  • à décaler le montant porte-outil agencé à l'avant de sorte que les extrémités des outils rotatifs s'engagent dans les paliers supérieur et inférieur.
A further subject of the invention is a method for mounting at least one rotary tool in a processing unit as described and claimed below, comprising the following steps consisting of:
  • to move vertically towards each other, the front bearings of the tool holder upright arranged at the front, then
  • shifting the tool holder upright arranged at the front so that the ends of the rotating tools engage in the upper and lower bearings.

Ainsi, lorsqu'un opérateur souhaite changer un outil rotatif, un manchon ou un mandrin, il commence par écarter légèrement les paliers supérieur et inférieur l'un de l'autre pour s'assurer que les outils rotatifs n'entreront pas en contact lors du changement d'outils. Puis, il désengage les extrémités des outils rotatifs de leurs paliers respectifs, en translatant le montant porte-outil agencé à l'avant, de sorte que ceux-ci puissent être ensuite largement décalés verticalement l'un de l'autre pour libérer un passage central permettant l'accès aux outils rotatifs.So when an operator wants to change a rotary tool, sleeve or chuck, they start by moving the upper and lower bearings slightly apart from each other to ensure that the rotary tools will not come into contact during the process. changing tools. Then, he disengages the ends of the rotary tools from their respective bearings, by translating the tool holder upright arranged at the front, so that they can then be largely vertically offset from each other to free a passage central allowing access to rotating tools.

Les paliers supérieur et inférieur mobiles verticalement dans des directions opposées, de part et d'autre de la direction longitudinale de déplacement du support plan, permettent ainsi le montage/démontage simple des outils rotatifs tout en assurant un maintien rigide et précis des outils rotatifs en fonctionnement.The upper and lower bearings movable vertically in opposite directions, on either side of the longitudinal direction of movement of the plane support, thus allow the simple assembly / disassembly of the rotary tools while ensuring a rigid and precise holding of the rotary tools in functioning.

Brève description des dessinsBrief description of the drawings

D'autres avantages et caractéristiques apparaîtront à la lecture de la description de l'invention, ainsi que sur les figures annexées qui représentent un exemple de réalisation non limitatif de l'invention et sur lesquelles:

  • la Figure 1 est une vue générale d'un exemple de ligne de transformation d'un support plan,
  • la Figure 2 représente une vue en perspective d'un outil rotatif supérieur et d'un outil rotatif inférieur,
  • la Figure 3 représente un exemple de réalisation d'un groupe de transformation vue en perspective et de côté,
  • la Figure 4 est une figure similaire à la Figure 3, après pivotement d'environ 90°,
  • la Figure 5 représente un exemple de réalisation d'un montant porte-outil,
  • la Figure 6 représente une vue partielle en coupe verticale du montant porte-outil de la Figure 5,
  • la Figure 7 est une vue analogue à la Figure 6, en perspective, avec les paliers supérieur et inférieur en position rapprochée,
  • la Figure 8 représente une vue analogue à la Figure 7 avec les paliers supérieur et inférieur écartés en position de maintenance,
  • la Figure 9 représente une vue schématique d'un groupe de transformation en position opérationnelle,
  • la Figure 10 représente une vue analogue à la Figure 9 en position de maintenance,
  • la Figure 11 représente une étape successive à l'étape de la Figure 10, et
  • la Figure 12 représente une étape successive à l'étape de la Figure 11.
Other advantages and characteristics will become apparent on reading the description of the invention, as well as on the appended figures which represent a non-limiting exemplary embodiment of the invention and in which:
  • the Figure 1 is a general view of an example of a transformation line of a plane support,
  • the Figure 2 shows a perspective view of an upper rotary tool and a lower rotary tool,
  • the Figure 3 represents an exemplary embodiment of a transformation group seen in perspective and from the side,
  • the Figure 4 is a figure similar to the Figure 3 , after pivoting by approximately 90 °,
  • the Figure 5 represents an exemplary embodiment of a tool holder upright,
  • the Figure 6 shows a partial vertical sectional view of the tool holder upright of the Figure 5 ,
  • the Figure 7 is a view analogous to Figure 6 , in perspective, with the upper and lower bearings in close position,
  • the Figure 8 represents a view similar to the Figure 7 with the upper and lower bearings spread apart in the maintenance position,
  • the Figure 9 represents a schematic view of a transformation unit in operational position,
  • the Figure 10 represents a view similar to the Figure 9 in maintenance position,
  • the Figure 11 represents a successive stage at the stage of Figure 10 , and
  • the Figure 12 represents a successive stage at the stage of Figure 11 .

Les directions longitudinale, verticale et transversale indiquées sur la Fig. 2 sont définies par le trièdre L, V, T. La direction transversale T est la direction perpendiculaire à la direction de déplacement longitudinale L du support plan. Le plan horizontal correspond au plan L, T. Les positions avant et arrière sont définies par rapport à la direction transversale T, comme étant respectivement le côté conducteur et le côté opposé conducteur.The longitudinal, vertical and transverse directions indicated on the Fig. 2 are defined by the trihedron L, V, T. The transverse direction T is the direction perpendicular to the direction of longitudinal displacement L of the plane support. The horizontal plane corresponds to the plane L, T. The front and rear positions are defined with respect to the transverse direction T, as being respectively the driver's side and the opposite driver's side.

Exposé détaillé des formes de réalisation préféréesDetailed description of the preferred embodiments

Une ligne de transformation d'un support plan, tel que du carton plat ou du papier en bande continue enroulé en bobine, permet de réaliser différentes opérations et d'obtenir des d'emballages comme des boîtes pliantes. Comme le représente la Fig. 1, la ligne de transformation comprend, disposée l'une à la suite de l'autre dans l'ordre de défilement du support plan, une station dérouleur 1, plusieurs groupes imprimeurs 2, un ou plusieurs groupes de gaufrage en série suivis d'un ou plusieurs groupes de refoulage en série 3, suivie d'un groupe de découpe rotative 4 ou de découpe à platine, et une station de réception 5 des objets confectionnés.A line for converting a flat support, such as cardboard or continuous strip paper wound into a reel, allows various operations to be carried out and to obtain packaging such as folding boxes. As represented by the Fig. 1 , the converting line comprises, arranged one after the other in the running order of the flat support, an unwinding station 1, several printing units 2, one or more embossing units in series followed by a or several groups of upsetting in series 3, followed by a rotary cutting unit 4 or plate cutting, and a receiving station 5 for the manufactured objects.

Le groupe de transformation 7 comprend un outil rotatif supérieur 10 et un outil rotatif inférieur 11, qui modifient le support plan par impression, gaufrage, refoulage, découpe, éjection des déchets, etc., en vue d'obtenir un emballage.The processing group 7 comprises an upper rotary tool 10 and a lower rotary tool 11, which modify the flat support by printing, embossing, upsetting, cutting, ejecting waste, etc., in order to obtain a package.

Les outils rotatifs 10 et 11, sont montés parallèlement l'un par rapport à l'autre dans le groupe de transformation 7, l'un au-dessus de l'autre, et s'étendent selon la direction transversale T, qui est aussi la direction des axes de rotation A1 et A2 des outils rotatifs 10 et 11 (voir Fig. 2). Les extrémités arrière des outils rotatifs 10 et 11, côté opposé conducteur, sont entraînées en rotation par des moyens d'entraînement motorisés. En fonctionnement, les outils rotatifs 10 et 11 tournent dans des sens opposés autour de chacun des axes de rotation A1 et A2 (Flèches Fs et Fi). Le support plan passe dans l'interstice situé entre les outils rotatifs 10 et 11, pour y être gaufré, et/ou refoulé, et/ou découpé, et/ou imprimé.The rotary tools 10 and 11 are mounted parallel to each other in the transformation group 7, one above the other, and extend in the transverse direction T, which is also the direction of the axes of rotation A1 and A2 of the rotary tools 10 and 11 (see Fig. 2 ). The rear ends of the rotary tools 10 and 11, on the opposite driver's side, are driven in rotation by motorized drive means. In operation, the rotary tools 10 and 11 rotate in opposite directions around each of the axes of rotation A1 and A2 (arrows Fs and Fi). The flat support passes through the gap located between the rotary tools 10 and 11, to be embossed therein, and / or upset, and / or cut, and / or printed.

Au moins un des deux outils rotatifs, l'outil rotatif supérieur 10 ou l'outil rotatif inférieur 11, comporte un mandrin 12 et un manchon amovible 13, insérable sur le mandrin 12 dans la direction transversale T (Fig. 2, Flèche G). Le manchon 13 présente une forme générale creuse et cylindrique. Le mandrin 12 comporte un noyau cylindrique, une extrémité avant, et une extrémité arrière, situées de part et d'autre du noyau cylindrique.At least one of the two rotary tools, the upper rotary tool 10 or the lower rotary tool 11, comprises a mandrel 12 and a removable sleeve 13, insertable on the mandrel 12 in the transverse direction T ( Fig. 2 , Arrow G). The sleeve 13 has a generally hollow and cylindrical shape. The mandrel 12 comprises a cylindrical core, a front end, and a rear end, located on either side of the cylindrical core.

Ainsi, lorsqu'un opérateur souhaite changer les outils rotatifs 10 et 11, il suffit de changer les manchons 13 plutôt que la totalité de l'outil rotatif 10 et 11. La manipulation du manchon 13 étant facilitée par son faible poids relativement à celui de l'outil rotatif 10 et 11 complet, le changement de travail peut être effectué rapidement. En outre, les manchons 13 sont peu coûteux comparés au prix de l'outil rotatif 10 et 11 complet. Il est donc avantageux d'utiliser un même mandrin 12 en combinaison avec plusieurs manchons 13, plutôt que de prévoir l'acquisition de plusieurs outils rotatifs 10 et 11 complets.Thus, when an operator wishes to change the rotary tools 10 and 11, it suffices to change the sleeves 13 rather than the whole of the rotary tool 10 and 11. The handling of the sleeve 13 is facilitated by its low weight relative to that of the rotary tool 10 and 11 complete, the job change can be done quickly. Further, the sleeves 13 are inexpensive compared to the price of the complete rotary tool 10 and 11. It is therefore advantageous to use the same mandrel 12 in combination with several sleeves 13, rather than providing for the acquisition of several complete rotary tools 10 and 11.

Le groupe de transformation 7 comporte un palier supérieur avant 14, destiné à supporter l'extrémité avant de l'outil rotatif supérieur 10, et un palier inférieur avant 15, destiné à supporter l'extrémité avant de l'outil rotatif inférieur 11. Le groupe de transformation 7 comporte un palier supérieur arrière 16, destiné à supporter l'extrémité arrière de l'outil rotatif supérieur 10, et un palier inférieur arrière 17, destiné à supporter l'extrémité arrière de l'outil rotatif inférieur 11. Les paliers supérieur et inférieurs 14, 15, 16 et 17 sont alignés deux à deux verticalement l'un au-dessus de l'autre.The transformation group 7 comprises a front upper bearing 14, intended to support the front end of the upper rotary tool 10, and a front lower bearing 15, intended to support the front end of the lower rotary tool 11. The transformation group 7 comprises a rear upper bearing 16, intended to support the rear end of the upper rotary tool 10, and a rear lower bearing 17, intended to support the rear end of the lower rotary tool 11. The bearings upper and lower 14, 15, 16 and 17 are aligned two by two vertically one above the other.

Les extrémités arrière des outils rotatifs 10 et 11, côté opposé conducteur, sont entraînées en rotation par un moyen motorisé 18 respectif.The rear ends of the rotary tools 10 and 11, on the side opposite the driver, are driven in rotation by a respective motorized means 18.

Le groupe de transformation 7 comporte un montant porte-outil 19 agencé à l'avant du bâti et un montant porte-outil 20 agencé à l'arrière du bâti. Les montants porte-outils 19 et 20 s'étendent verticalement. Au moins le corps 9 du montant porte-outil 19 agencé à l'avant présente une forme de cadre avec un passage central 35.The transformation group 7 comprises a tool holder upright 19 arranged at the front of the frame and a tool holder upright 20 arranged at the rear of the frame. The tool-holder uprights 19 and 20 extend vertically. At least the body 9 of the tool holder upright 19 arranged at the front has the form of a frame with a central passage 35.

Les montants porte-outils 19 et 20 comportent respectivement un palier supérieur avant 14 et arrière 16 et un palier inférieur avant 15 et arrière 17. Les paliers 14, 15, 16 et 17 sont mobiles verticalement dans des directions opposées, de part et d'autre de la direction longitudinale L de déplacement du support plan. Les mouvements des paliers 14, 15, 16 et 17 sont représentés par les doubles flèches Pa et Pr sur la Fig. 3.The tool-holder uprights 19 and 20 respectively comprise an upper front bearing 14 and rear 16 and a lower front bearing 15 and rear 17. The bearings 14, 15, 16 and 17 are movable vertically in opposite directions, on both sides. another of the longitudinal direction L of displacement of the plane support. The movements of stages 14, 15, 16 and 17 are represented by the double arrows Pa and Pr on the Fig. 3 .

Le montant porte-outil 19 et 20 peut en outre être prévu avec un entraînement commun des paliers 14, 15, 16 et 17 permettant un déplacement simultané des paliers 14, 15, 16 et 17 d'une même distance dans des directions opposées. Autrement dit, les paliers supérieur et inférieur 14, 15, 16 et 17 peuvent être déplacés verticalement de manière symétrique, simultanément et à la même vitesse.The tool holder upright 19 and 20 can also be provided with a common drive of the bearings 14, 15, 16 and 17 allowing simultaneous displacement of the bearings 14, 15, 16 and 17 by the same distance in opposite directions. In other words, the upper and lower bearings 14, 15, 16 and 17 can be moved vertically symmetrically, simultaneously and at the same speed.

Selon un exemple de réalisation, l'entraînement commun comporte un dispositif à vis 25. Les paliers 14, 16 et 15, 17 sont montés l'un au-dessus de l'autre deux à deux, sur un dispositif à vis 25 d'un montant porte-outil 19 et 20 respectif, de sorte que la rotation du dispositif à vis 25 entraîne le déplacement linéaire des paliers 14, 16 et 15, 17 dans des directions verticales V opposées.According to an exemplary embodiment, the common drive comprises a screw device 25. The bearings 14, 16 and 15, 17 are mounted one above the other two by two, on a screw device 25 of a respective tool holder post 19 and 20, so that the rotation of the screw device 25 causes the bearings 14, 16 and 15, 17 to move linearly in opposite vertical directions V.

Le dispositif à vis 25 comporte au moins une vis 26a, 26b s'étendant dans la direction verticale V et traversant successivement les paliers 14, 16 et 15, 17 présentant un taraudage associé. La vis 26a et 26b comporte une hélice supérieure coopérant avec le palier supérieur 14 ou 16, et une hélice inférieure coopérant avec le palier inférieur 15 ou 17. Le sens de l'hélice supérieure est inversé par rapport au sens de l'hélice inférieure, de sorte que la rotation de la vis 26a et 26b entraîne le palier supérieur 14 ou 16 vers le haut et le palier inférieur 15 ou 17 vers le bas.The screw device 25 comprises at least one screw 26a, 26b extending in the vertical direction V and successively passing through the bearings 14, 16 and 15, 17 having an associated thread. The screw 26a and 26b comprises an upper propeller cooperating with the upper bearing 14 or 16, and a lower propeller cooperating with the lower bearing 15 or 17. The direction of the upper propeller is reversed with respect to the direction of the lower propeller, so that the rotation of the screw 26a and 26b drives the upper bearing 14 or 16 upwards and the lower bearing 15 or 17 downwards.

Les dispositifs à vis 25 permettent le déplacement de fortes charges telles que celles des outils rotatifs 10 et 11 tout en offrant une précision de réglage du mouvement performante et avec une bonne rigidité de maintien. Un autre avantage est que les dispositifs à vis 25 sont robustes et peuvent maintenir le positionnement vertical des paliers 14, 15, 16 et 17 sans dérive même sous l'effet des vibrations pouvant survenir dans le bâti du groupe de transformation 7.The screw devices 25 allow the displacement of high loads such as those of the rotary tools 10 and 11 while offering high-performance adjustment precision of the movement and with good holding rigidity. Another advantage is that the screw devices 25 are robust and can maintain the vertical positioning of the bearings 14, 15, 16 and 17 without drift even under the effect of vibrations which may occur in the frame of the transformation group 7.

La vis 26a et 26b présente par exemple un diamètre compris entre 40mm et 60mm, tel que de l'ordre de 50mm, et un pas de vis compris entre 0,5mm et 2mm, tel que de l'ordre de 1mm. La vis présente par exemple un pas de vis dont la tolérance de fabrication est inférieure à une dizaine de microns. Le diamètre de la vis 26a, 26b peut donc être important relativement au pas de vis qui est faible, ce qui permet le support de fortes charges tout en ayant une excellente précision de réglage du mouvement.The screw 26a and 26b has for example a diameter of between 40mm and 60mm, such as of the order of 50mm, and a thread of between 0.5mm and 2mm, such as that of the order of 1mm. The screw has, for example, a screw thread, the manufacturing tolerance of which is less than ten microns. The diameter of the screw 26a, 26b can therefore be large relative to the screw pitch which is small, which allows the support of high loads while having excellent precision in the adjustment of the movement.

Selon un exemple de réalisation, la vis 26a et 26b est une vis à rouleaux, également appelée vis à rouleaux satellites ou vis à rouleaux planétaires. Les vis à rouleaux ont des écrous 27 qui comportent des rouleaux, agencés dans un anneau cylindrique du palier respectif 14, 15, 16 et 17, autour de la vis 26a et 26b. Les rouleaux des écrous 27 assurent la fonction de roulement (voir Fig. 6). Le grand nombre de points de contact permet aux vis à rouleaux de supporter de fortes charges, et de garantir une grande rigidité.According to an exemplary embodiment, the screw 26a and 26b is a roller screw, also called satellite roller screw or planetary roller screw. The roller screws have nuts 27 which have rollers, arranged in a cylindrical ring of the respective bearing 14, 15, 16 and 17, around the screw 26a and 26b. The rollers of the nuts 27 perform the rolling function (see Fig. 6 ). The large number of contact points allows the roller screws to withstand high loads and guarantee high rigidity.

Le dispositif à vis 25 comporte (visible sur l'exemple de réalisation des Figs. 5, 6, 7 et 8) une première et une deuxième vis 26a et 26b agencées parallèlement l'une par rapport à l'autre, de chaque côté des paliers supérieur et inférieur 14, 15 ou 16 et 17 traversant les paliers 14, 16 ou 15, 17. Les deux vis 26a et 26b ainsi agencées assurent une tenue équilibrée et renforcée des paliers respectifs 14, 16, 15, 17.The screw device 25 comprises (visible on the exemplary embodiment of Figs. 5, 6 , 7 and 8 ) a first and a second screw 26a and 26b arranged parallel to each other, on each side of the upper and lower bearings 14, 15 or 16 and 17 passing through the bearings 14, 16 or 15, 17. Both screws 26a and 26b thus arranged ensure a balanced and reinforced hold of the respective bearings 14, 16, 15, 17.

Selon un exemple de réalisation, les paliers 14, 16 ou 15, 17 présentent des formes sensiblement identiques, montées en regard. Les paliers 14, 16 ou 15, 17 présentent par exemple des formes générales respectives allongées dans la direction longitudinale L de déplacement du support plan. Ces modes de réalisation des paliers 14, 16, 15, 17 permettent de concentrer les forces exercées par le montant porte-outil 19, 20 respectif au niveau des paliers 14, 15, 16 et 17, assurant une bonne rigidité de maintien des outils rotatifs 10 et 11.According to an exemplary embodiment, the bearings 14, 16 or 15, 17 have substantially identical shapes, mounted opposite. The bearings 14, 16 or 15, 17 have for example respective general shapes elongated in the longitudinal direction L of movement of the flat support. These embodiments of the bearings 14, 16, 15, 17 make it possible to concentrate the forces exerted by the respective tool holder upright 19, 20 at the level of the bearings 14, 15, 16 and 17, ensuring good holding rigidity for the rotating tools. 10 and 11.

Selon un exemple de réalisation, le dispositif à vis 25 comporte un dispositif motorisé ayant un moteur 29 dont l'axe moteur 31 est relié aux vis 26a et 26b de manière à entraîner leur rotation simultanée. Le dispositif motorisé comporte par exemple une première et une deuxième courroie synchrone 30a et 30b. La première courroie 30a est entraînée par l'axe moteur 31 et entraine en rotation une première poulie 32a du dispositif à vis 25, montée à l'extrémité de la première vis 26a. La première poulie 32a est solidaire en rotation de la première vis 26a. La deuxième courroie 30b est également entraînée par l'axe moteur 31, et entraîne en rotation une deuxième poulie 32b du dispositif à vis 25, montée à l'extrémité de la deuxième vis 26b. La deuxième poulie 32b est solidaire en rotation de la deuxième vis 26b. Ainsi, la rotation de l'axe moteur 31 entraîne la rotation simultanée de la première et deuxième vis 26a et 26b du dispositif à vis 25 et ainsi la montée/descente à même vitesse des deux paliers 14, 15, 16 et 17. Le dispositif motorisé permet d'assurer que les vis 26a et 26b tournent à la même vitesse de sorte que le palier 14, 15, 16 et 17 respectif ne descende/monte de travers.According to an exemplary embodiment, the screw device 25 comprises a motorized device having a motor 29, the motor axis 31 of which is connected to the screws 26a and 26b so as to drive their simultaneous rotation. The motorized device comprises for example a first and a second synchronous belt 30a and 30b. The first belt 30a is driven by the motor shaft 31 and drives in rotation a first pulley 32a of the screw device 25, mounted at the end of the first screw 26a. The first pulley 32a is integral in rotation with the first screw 26a. The second belt 30b is also driven by the motor shaft 31, and drives in rotation a second pulley 32b of the screw device 25, mounted at the end of the second screw 26b. The second pulley 32b is integral in rotation with the second screw 26b. Thus, the rotation of the motor shaft 31 causes the simultaneous rotation of the first and second screw 26a and 26b of the screw device 25 and thus the ascent / descent at the same speed of the two bearings 14, 15, 16 and 17. The device motorized ensures that screws 26a and 26b rotate at the same speed so that the respective bearing 14, 15, 16 and 17 does not go down / up askew.

Les paliers 14, 15, 16 et 17 et le corps 9 du montant porte-outil 19 et 20 peuvent également comporter des moyens complémentaires de guidage en translation verticale V. Plus précisément (voir Fig. 6), au moins un rail de guidage vertical 33 est par exemple agencé le long du corps 9 du montant porte-outil 19 ou 20. En correspondance, les paliers 14, 15, 16 et 17 comportent une mâchoire de guidage vertical 34 complémentaire en vis-à-vis (ou inversement). Par exemple deux rails de guidage verticaux 34 peuvent être agencés en parallèles entre le corps 9 et le dispositif à vis 25, de chaque côté des paliers supérieur et inférieur 14, 15, 16 et 17.The bearings 14, 15, 16 and 17 and the body 9 of the tool holder upright 19 and 20 may also include complementary means for guiding in vertical translation V. More precisely (see Fig. 6 ), at least one vertical guide rail 33 is for example arranged along the body 9 of the tool holder upright 19 or 20. In correspondence, the bearings 14, 15, 16 and 17 comprise a complementary vertical guide jaw 34 in screw form -à-à-vis (or vice versa). For example two vertical guide rails 34 can be arranged in parallel between the body 9 and the screw device 25, on each side of the upper and lower bearings 14, 15, 16 and 17.

En outre, un des montants porte-outils 19 et 20 peut être mobile en translation dans une direction parallèle à l'axe des outils rotatifs 10 et 11 (Flèches C sur la Fig. 3), c'est-à-dire mobile en translation transversale, entre une position opérationnelle dans laquelle les paliers supérieur et inférieur 14, 15, 16 et 17 peuvent coopérer avec les extrémités des outils rotatifs supérieur 10 et inférieur 11, et une position de maintenance dans laquelle le montant porte-outil 19 est écarté de la position opérationnelle.In addition, one of the tool-holder uprights 19 and 20 can be movable in translation in a direction parallel to the axis of the rotary tools 10 and 11 (arrows C on the Fig. 3 ), that is to say mobile in transverse translation, between an operational position in which the upper and lower bearings 14, 15, 16 and 17 can cooperate with the ends of the upper 10 and lower 11 rotary tools, and a position of maintenance in which the tool holder post 19 is moved away from the operational position.

En position de maintenance, les paliers supérieurs et inférieur 14, 15, 16 et 17 sont positionnés à l'écart des extrémités des outils rotatifs 10 et 11. Le montant porte-outil mobile est par exemple le montant porte-outil 19 agencé à l'avant du bâti du groupe de transformation 7, côté conducteur, car il n'est pas encombré par les moyens motorisés 18 d'entrainement des outils rotatifs 10 et 11. Le montant porte-outil 20 agencé à l'arrière 36 du bâti est fixe.In the maintenance position, the upper and lower bearings 14, 15, 16 and 17 are positioned away from the ends of the rotary tools 10 and 11. The mobile tool-holder upright is for example the tool-holder upright 19 arranged at the 'front of the frame of the transformation group 7, driver's side, because it is not encumbered by the motorized means 18 for driving the rotary tools 10 and 11. The tool holder upright 20 arranged at the rear 36 of the frame is fixed.

Le montant porte-outil 19 et un socle 36 du groupe de transformation 7 peuvent comporter des moyens complémentaires de guidage en translation transversale T. Plus précisément, le montant porte-outil 19 présente par exemple au moins un coulisseau transversal 37 en vis-à-vis d'un rail de guidage transversal 38 complémentaire agencé en partie supérieure du socle 36 et s'étendant dans la direction transversale T (ou inversement). Par exemple deux rails de guidage transversaux 38 peuvent être agencés en parallèles sous le montant porte-outil 19 agencé à l'avant.The tool holder upright 19 and a base 36 of the transformation unit 7 may include complementary means for guiding in transverse translation T. More precisely, the tool holder upright 19 has for example at least one transverse slide 37 facing each other. screw of a complementary transverse guide rail 38 arranged in the upper part of the base 36 and extending in the transverse direction T (or vice versa). For example two transverse guide rails 38 can be arranged in parallel under the tool holder upright 19 arranged at the front.

Au moins un des paliers 14, 15, 16 et 17 est mobile hors du passage central 35 du montant porte-outil 19, permettant l'extraction ou l'insertion d'au moins un outil rotatif 10 et 11.At least one of the bearings 14, 15, 16 and 17 is movable outside the central passage 35 of the tool holder upright 19, allowing the extraction or insertion of at least one rotary tool 10 and 11.

La mobilité transversale du montant porte-outil 19 permet de désengager les extrémités des outils rotatifs 10 et 11 de leurs paliers respectifs 14 et 15, de sorte que ceux-ci puissent être ensuite décalés verticalement l'un de l'autre, de manière à dégager un passage central 35 permettant l'accès aux outils rotatifs 10 et 11. Ainsi, les paliers supérieur ou inférieur avant 14 et 15 peuvent être mobiles entre une position rapprochée (voir Fig. 7) par exemple lorsque le groupe de transformation 7 est au repos et ne comporte pas d'outils rotatifs 10 et 11, ou seulement des mandrins 12, et une position de maintenance ou lors d'un changement de travail, dans laquelle les deux paliers supérieur et inférieur avant 14, 15 sont écartés l'un de l'autre, laissant un passage central 35 dégagé permettant l'extraction ou l'insertion d'outils rotatifs 10 et 11 complets, de manchons 13 ou de mandrins 12 (voir Fig. 8).The transverse mobility of the tool holder post 19 allows the ends of the rotary tools 10 and 11 to be disengaged from their respective bearings 14 and 15, so that they can then be shifted vertically from each other, so as to clear a central passage 35 allowing access to the rotary tools 10 and 11. Thus, the upper or lower front bearings 14 and 15 can be movable between a close position (see Fig. 7 ) for example when the transformation group 7 is at rest and does not include rotary tools 10 and 11, or only chucks 12, and a maintenance position or during a change of work, in which the two upper bearings and lower front 14, 15 are spaced from each other, leaving a central passage 35 open allowing the extraction or insertion of rotary tools 10 and 11 complete, sleeves 13 or chucks 12 (see Fig. 8 ).

Le groupe de transformation 7 comporte par exemple une unité de traitement configurée pour piloter de manière indépendante d'une part, le déplacement vertical des chariots de support de palier 14 et 16 du montant porte-outil 19 agencé à l'avant et d'autre part, le déplacement vertical des paliers 15 et 17 du montant porte-outil 20 agencé à l'arrière.The transformation unit 7 comprises for example a processing unit configured to control independently on the one hand, the vertical displacement of the bearing support carriages 14 and 16 of the tool holder upright 19 arranged at the front and on the other hand, the vertical displacement of the bearings 15 and 17 of the tool holder upright 20 arranged at the rear.

Dans la position opérationnelle initiale du groupe de transformation 7 (Fig. 9), les paliers supérieur et inférieur 14, 15, 16 et 17 coopèrent avec les extrémités d'outils rotatifs supérieur et inférieur 10 et 11.In the initial operational position of transformation group 7 ( Fig. 9 ), the upper and lower bearings 14, 15, 16 and 17 cooperate with the upper and lower rotary tool ends 10 and 11.

Lorsqu'un opérateur souhaite changer un outil rotatif 10 et 11, un manchon 13 ou un mandrin 12, il commence par écarter un peu les paliers 14, 15, 16 et 17 verticalement dans des directions opposées. L'opérateur s'assure ainsi que les outils rotatifs 10 et 11 ne seront pas en contact lors du changement d'outils (flèches F1 en Fig. 9).When an operator wishes to change a rotary tool 10 and 11, a sleeve 13 or a mandrel 12, he begins by moving the bearings 14, 15, 16 and 17 slightly apart vertically in opposite directions. The operator thus ensures that the rotary tools 10 and 11 will not be in contact when changing tools (arrows F1 in Fig. 9 ).

Puis, l'opérateur décale transversalement le montant porte-outil 19 agencé à l'avant dans une position de maintenance (flèche F2 en Fig. 10). Dans cette position écartée de la position opérationnelle, les paliers supérieur et inférieur 14 et 15 sont désengagés des extrémités des outils rotatifs 10 et 11.Then, the operator shifts transversely the tool holder upright 19 arranged at the front in a maintenance position (arrow F2 in Fig. 10 ). In this position away from the operational position, the upper and lower bearings 14 and 15 are disengaged from the ends of the rotary tools 10 and 11.

Puis, l'opérateur écarte les paliers 14 et 16 du montant porte-outil 19 agencé à l'avant, verticalement dans des directions opposées, avec une grande amplitude, de sorte qu'ils soient positionnés hors d'un passage central 35 permettant l'extraction des outils rotatifs 10 et 11 (flèches F3 en Fig. 11).Then, the operator moves the bearings 14 and 16 of the tool holder upright 19 arranged at the front, vertically in opposite directions, with a large amplitude, so that they are positioned outside a central passage 35 allowing the '' extraction of the rotary tools 10 and 11 (arrows F3 in Fig. 11 ).

L'opérateur peut alors accéder aux outils rotatifs 10 et 11 et changer un outil rotatif 10 et 11, un manchon 13 ou un mandrin 12 (flèches F4 en Fig. 12).The operator can then access the rotary tools 10 and 11 and change a rotary tool 10 and 11, a sleeve 13 or a mandrel 12 (arrows F4 in Fig. 12 ).

Ensuite, l'opérateur déplace verticalement les paliers 14 et 16 du montant porte-outil 19 agencé à l'avant, l'un vers l'autre.Then, the operator vertically moves the bearings 14 and 16 of the tool holder upright 19 arranged at the front, one towards the other.

Il décale ensuite transversalement le montant porte-outil 19 agencé à l'avant de sorte que les extrémités des outils rotatifs 10 et 11 s'engagent dans les paliers supérieur et inférieur 14 et 15.It then transversely shifts the tool holder upright 19 arranged at the front so that the ends of the rotary tools 10 and 11 engage in the upper and lower bearings 14 and 15.

Le montage et démontage des outils rotatifs 10 et 11 sont ainsi facilités. La mobilité verticale des paliers 14, 15, 16 et 17 permet d'ajuster l'écartement entre les outils rotatifs 10 et 11 notamment pour régler l'intervalle radial entre les outils 10 et 11, ceci en production ou à l'arrêt, tout en conservant la rigidité. Elle permet également de décaler les paliers 14, 15, 16 et 17 l'un de l'autre en phase de maintenance, une fois les paliers 14, 15, 16 et 17 désengagés des outils rotatifs 10 et 11, pour libérer un passage central 35 permettant l'accès aux outils rotatifs 10 et 11.The assembly and disassembly of the rotary tools 10 and 11 are thus facilitated. The vertical mobility of the bearings 14, 15, 16 and 17 makes it possible to adjust the spacing between the rotary tools 10 and 11 in particular to adjust the radial interval between the tools 10 and 11, this in production or at standstill, while while maintaining rigidity. It also makes it possible to offset the bearings 14, 15, 16 and 17 from one another during the maintenance phase, once the bearings 14, 15, 16 and 17 have been disengaged from the rotary tools 10 and 11, to free a central passage. 35 allowing access to the rotary tools 10 and 11.

En outre, cela permet de déplacer les outils rotatifs 10 et 11 par des entraînements ayant une précision de réglage du mouvement et une rigidité de maintien performants, qui sont des contraintes importantes à respecter pour la bonne réalisation des opérations de transformation.In addition, this makes it possible to move the rotary tools 10 and 11 by drives having high-performance movement adjustment precision and holding rigidity, which are important constraints to be observed for the proper performance of the transformation operations.

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. Numerous modifications can be made without departing from the framework defined by the scope of the set of claims.

Claims (13)

  1. Converting unit (7) for a flat substrate, comprising:
    - two upper bearings (14, 16) each intended to support an end of an upper rotary tool (10), and
    - two lower bearings (15, 17) each intended to support an end of a lower rotary tool (11), the flat substrate being intended to be moved longitudinally between the upper rotary tool (10) and the lower rotary tool (11), the upper bearings (14, 16) and the lower bearings (15, 17) being movable vertically in opposite directions, on either side of the longitudinal movement direction (L) of the flat substrate,
    - at least one tool-holder column (19, 20) of the converting unit (7) comprising a common drive of an upper bearing (14, 16) and of a lower bearing (15, 17) allowing a simultaneous movement of the upper (14, 16) and lower (15, 17) bearings by a same distance in opposite directions, the at least one common drive comprising a screw device (25), the upper (14, 16) and lower (15, 17) bearings being mounted on top of one another on the screw device (25), such that the rotation of the screw device (25) linearly moves the upper (14, 16) and lower (15, 17) bearings in opposite directions,
    - characterised in that the screw device (25) comprises a first and a second screw (26a, 26b) arranged parallel against one another, on each side of the upper (14, 16) and lower (15, 17) bearings and passing through the upper (14, 16) and lower (15, 17) bearings.
  2. Unit according to claim 1, wherein the at least one screw (26a, 26b) of the screw device (25) extends in a vertical direction (V) and comprises an upper blade engaging with the bearing (14, 15) wherein is arranged the upper bearing (14, 16) and a lower blade engaging with the bearing (16, 17) wherein is arranged the lower bearing (15, 17), the direction of the upper blade being inverted with respect to the direction of the lower blade.
  3. Unit according to one of claims 1 or 2, wherein the screw device (25) comprises at least one roller screw.
  4. Unit according to one of the preceding claims, wherein the screw device (25) comprises a motorised device configured to simultaneously rotate the first and the second screw (26a, 26b).
  5. Unit according to claim 4, wherein the motorised device comprises a first and a second belt (30a, 30b), the first belt (30a) being rotated by a motor axis (31) of the motorised device and rotating a first pulley (32a) of the screw device (25), mounted at the end of the first screw (26a), the second belt (30b) also being rotated by said motor axis (31) and rotating a second pulley (32b) of the screw device (25), mounted at the end of the second screw (26b).
  6. Unit according to one of the preceding claims, wherein the bearings (14, 15, 16, 17) and a body (9) of the tool-holder column (19) comprise complementary means for guiding in vertical translation (33, 34).
  7. Unit according to one of the preceding claims, wherein at least one bearing (14, 15, 16, 17) is movable outside of a central passage (35) allowing the extraction or the insertion of at least one rotary tool (10, 11).
  8. Unit according to one of the preceding claims, wherein the tool-holder column (19) is movable in translation in a direction parallel to the axis of the rotary tools (10, 11), between an operational position wherein the upper and lower bearings (14, 15) can engage with rotary tool (10, 11) ends and a maintenance position wherein said tool-holder column (19) is deviated from the operational position.
  9. Unit according to claim 8, wherein the tool-holder column (19) and a base (36) of the converting unit (7) comprise complementary means for guiding in translation (37, 38).
  10. Unit according to claim 8 or 9, wherein the tool-holder column (19) is arranged at the front, on the conductor side.
  11. Unit according to one of claims 8 to 10, comprising a processing unit configured to independently control on the one hand, the vertical movement of the bearings (14, 16) of a tool-holder column (19) of the converting unit (7) arranged at the front and on the other hand, the vertical movement of the bearings (15, 17) of a tool-holder column (20) of the converting unit (7) arranged at the rear.
  12. Method for removing at least one rotary tool (10, 11) in a converting unit (7) according to one of claims 1 to 11, comprising the following steps consisting of:
    - vertically moving the bearings (14, 15, 16, 17) in opposite directions,
    - deviating the tool-holder column (19) arranged at the front such that the upper and lower bearings (14, 15) are disengaged from the ends of the rotary tools (10, 11), then
    - vertically moving the bearings (14, 16) of the tool-holder column (19) arranged at the front in opposite directions, such that the bearings (14, 16) are positioned outside of a central passage (35) allowing the extraction of the rotary tools (10, 11).
  13. Method for mounting at least one rotary tool (10, 11) in a converting unit (7) according to one of claims 1 to 11, comprising the following steps consisting of:
    - vertically moving the bearings (14, 15) of the tool-holder column (19) arranged at the front towards one another, then
    - deviating the tool-holder column (19) arranged at the front, such that the ends of the rotary tools (10, 11) are engaged in the upper and lower bearings (14, 15).
EP15805399.1A 2014-12-04 2015-11-20 Unit for transforming a planar substrate, and methods for removing and mounting a rotary tool in a transformation unit Active EP3227068B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP14020100 2014-12-04
PCT/EP2015/025087 WO2016087048A1 (en) 2014-12-04 2015-11-20 Tool-holder column, unit for converting a flat substrate, and methods for removing and mounting a rotary tool in relation to a converting unit

Publications (2)

Publication Number Publication Date
EP3227068A1 EP3227068A1 (en) 2017-10-11
EP3227068B1 true EP3227068B1 (en) 2021-07-28

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EP15805399.1A Active EP3227068B1 (en) 2014-12-04 2015-11-20 Unit for transforming a planar substrate, and methods for removing and mounting a rotary tool in a transformation unit

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US (1) US11052562B2 (en)
EP (1) EP3227068B1 (en)
JP (1) JP6427671B2 (en)
KR (1) KR20170086086A (en)
CN (1) CN107107517B (en)
ES (1) ES2883418T3 (en)
WO (1) WO2016087048A1 (en)

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CN108724280B (en) * 2018-05-30 2020-10-16 晋江特锐模具有限公司 Roll cutting device
KR102125936B1 (en) * 2018-11-19 2020-06-23 이준호 Roll Holder
CN110696430A (en) * 2019-10-28 2020-01-17 平湖市盒成利包装有限公司 Production process of top and bottom cover packaging box
CN111152511B (en) * 2020-02-27 2021-12-07 南通世和新型医用材料有限公司 Paper-plastic composite bag cutting machine and manufacturing and cutting method

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Also Published As

Publication number Publication date
EP3227068A1 (en) 2017-10-11
US11052562B2 (en) 2021-07-06
JP6427671B2 (en) 2018-11-21
CN107107517B (en) 2019-06-21
CN107107517A (en) 2017-08-29
WO2016087048A1 (en) 2016-06-09
KR20170086086A (en) 2017-07-25
ES2883418T3 (en) 2021-12-07
JP2018501123A (en) 2018-01-18
US20170266833A1 (en) 2017-09-21

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