EP3227101B1 - Tool-holder head, transport carriage and method for mounting and removing a tool for a unit for modifying a flat material - Google Patents

Tool-holder head, transport carriage and method for mounting and removing a tool for a unit for modifying a flat material Download PDF

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Publication number
EP3227101B1
EP3227101B1 EP15808109.1A EP15808109A EP3227101B1 EP 3227101 B1 EP3227101 B1 EP 3227101B1 EP 15808109 A EP15808109 A EP 15808109A EP 3227101 B1 EP3227101 B1 EP 3227101B1
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EP
European Patent Office
Prior art keywords
tool
holder head
turret
head
transformation unit
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
EP15808109.1A
Other languages
German (de)
French (fr)
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EP3227101A1 (en
Inventor
Pierre Robadey
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bobst Mex SA
Original Assignee
Bobst Mex SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bobst Mex SA filed Critical Bobst Mex SA
Publication of EP3227101A1 publication Critical patent/EP3227101A1/en
Application granted granted Critical
Publication of EP3227101B1 publication Critical patent/EP3227101B1/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
    • 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
    • B31B50/14—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
    • 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 tool-carrying head, intended for a trolley for transporting rotary tools, for a unit for converting a flat support.
  • the invention relates to a transport carriage, provided with a tool-holder head for a unit for transforming a flat support.
  • the invention also relates to a method for mounting a tool in a group for transforming a plane support, and a method for dismantling a tool in a group for transforming a plane support.
  • 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 planar support is then cut in a cutting group. After ejection of the waste zones, the poses obtained are sectioned to obtain individualized boxes.
  • the rotary units for transformation, embossing, upsetting, cutting, waste ejection, or printing respectively comprise an upper cylindrical transformation tool, and a lower cylindrical transformation tool, between which the flat support circulates to be transformed.
  • the rotary transformation tools rotate at the same speed, but in opposite directions to each other.
  • the planar support passes through the gap between the rotary tools, which shape a relief by embossing, shape a relief by upsetting, cut the planar support into rotary die cuts, eject waste, or imprint a pattern when impression.
  • Cylinder change operations 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 replaces the new cylinder in the transformation machine by reconnecting it to its drive.
  • the weight of a cylinder is significant, around 50 kg to 2,000 kg. To take it out, the operator lifts it using a hoist.
  • transformation groups see for example the mobile device described in the document EP1598275 , provide for the use of rotary tools consisting of a chuck and a shape-carrying removable sleeve ensuring the transformation, which can be inserted on the chuck. 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.
  • the mandrel can also be changed and is chosen according to its diameter.
  • An object of the present invention is to provide devices and methods which at least partially resolve the drawbacks of the state of the art.
  • the subject of the invention is a tool-holder head for a carriage for transporting rotary tools of a transformation unit of a plane support according to claim 1.
  • the tool-holder head comprises an upper port and a port inferior.
  • the upper port and the lower port are arranged one above the other, and are intended to respectively receive a front end of an upper rotary tool and a front end of a lower rotary tool.
  • the transport trolley is equipped with a mobile base.
  • the tool head comprises at least one port, intended to receive a front end of a rotary tool, and positioned cantilevered with respect to the mobile base, so as to be able to make the rotary tool penetrate inside the transformation group.
  • a tool is defined as being a chuck, a chuck and sleeve assembly, a one-piece tool, or others.
  • the converting group is defined as being an upsetting group, an embossing group, a rotary die-cutting group, a waste ejection group, a printing group, chosen alone or in combination, or still others.
  • the arrangement of the parallel tools according to a predetermined spacing in the transport carriage allows their transfer without additional handling of the rotary tools already pre-positioned at the level of the bearings of the transformation unit.
  • the tool holder head thus makes it possible to arrange the rotary tool(s) so that it can be easily mounted/dismounted in the transformation unit.
  • the positioning of the rotary tools is also facilitated in the axis of the bearings of the transformation unit. Furthermore, the number of operations is reduced and the handling of heavy rotating tools is facilitated.
  • the tool holder head comprises a holding interface, intended to cooperate with a turret of the transformation unit, to fix the tool holder head to the turret. Attaching the transport trolley to the processing unit allows the processing unit to reference the precise positioning of the rotating tools.
  • the holding interface is for example configured to suspend the tool holder head from the turret of the transformation unit.
  • the fixing of the tool holder head by suspension to the turret is ergonomic, in particular thanks to the use of a lifting device of the transport trolley, configured to raise or lower the tool holder head with respect to the mobile base of the trolley transport.
  • the holding interface comprises at least one first hooking member intended to cooperate with at least one first complementary hooking member of the turret.
  • the first attachment members allow the guiding and fixing of the tool holder head to the transformation unit, in particular by avoiding movements of the tool holder head in the transverse direction, in the axis of rotation of the rotary tools.
  • the first attachment members comprise for example at least a first hook, capable of cooperating with a first roller mounted free in rotation.
  • the rollers facilitate assembly and disassembly of the tool holder head on the turret, limiting the risk of jamming.
  • the holding interface comprises at least a first shoulder intended to cooperate with a support wedge of the turret to carry the tool holder head, so that when the tool holder head is carried by the support wedge, the first hooks are substantially arranged above the first rollers.
  • the support wedges thus make it possible to relieve the first rollers of the weight of the substantially more fragile rotary tools.
  • the holding interface comprises at least one guide light, intended to cooperate with a complementary guide pin carried by the turret, the guide light having an L-shape of thinner thickness than the openings of the first hooks .
  • the light and the guide pin make it possible to guide the docking of the tool holder head on the turret.
  • the guide pin which is more robust than the rollers, thus allows the tool holder head to be guided in the direction in the axis of rotation of the rotary tools then, vertically, following the L-shaped trajectory of the guide lights, avoiding possible collisions between the hook(s) of the tool holder and the rollers of the turret.
  • the tool holder head comprises a second front holding interface, intended to cooperate with a mobile base of the transport carriage, to fix the tool holder head to the mobile base.
  • the tool holder head is then removable, so that the mobile base can be common for different tool holder heads.
  • the second holding interface is configured to suspend the tool holder head from the mobile base.
  • the second holding interface comprises at least one second hooked member, intended to cooperate with at least one second hooked member complementary to the mobile base, the second hooked members comprising at least one second hook, capable to cooperate with a second roller mounted free in rotation.
  • the rollers facilitate assembly and disassembly of the tool holder head on the mobile base, limiting the risk of jamming.
  • the second holding interface comprises at least a second shoulder intended to cooperate with a support wedge of the mobile base to carry the tool holder head, so that when the tool holder head is carried by the support wedge , the second hooks are substantially arranged above the second rollers.
  • the tool holder head comprises a locking device configured to assume an unlocked position or a locking position, in which the locking device locks the holding of the front end of the tool in the upper ports and lower.
  • the locking device comprises an articulated system, an upper locking pin, a lower locking pin and an actuating lever connected to the upper and lower locking pins by the articulated system so that the actuation of the lever positions the locking pins in the unlocked or locked position.
  • the upper and lower ports comprise a respective elastic device, intended to bear against the front end of the tool and which can be pushed back by the latter towards the bottom of the housing of the upper or lower port. Collisions of the tools are thus avoided with the tool holder head in the unlocked position by manipulation of the tools at the rear ends by the gripper of the motorized drive means, on the side opposite the driver. The rear end of the tool is at the bottom of the clamp of the drive means.
  • the invention also relates to a transport trolley comprising a foot provided with rolling elements according to claim 12, characterized in that it comprises a tool holder head as described and claimed below, and a lifting device configured to raise or lower the tool holder head relative to the foot.
  • the lifting device thus makes it possible to lift and lower heavy loads such as the elements of rotary tools to suspend the tool holder head on the turret of the transformation unit but also makes it possible to make the handling of the transport trolley in the factory safer in lowering the center of gravity of the load. Indeed, the lowering of the loads during the conveying of the rotating tools in the factory makes it possible to prevent the transport trolley from being unbalanced by the rotating tools cantilevered.
  • 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 non-driver's side.
  • a line for transforming a flat support such as flat cardboard or paper in a continuous strip wound on a reel, makes it possible to carry out various operations 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 unwinder station 1, several printing units 2, one or more embossing units in series followed by a or several upsetting groups in series 3, followed by a rotary cutting group 4 or platen cutting, and a receiving station 5 for the finished articles.
  • the transformation group 7 comprises an upper rotary tool 10 and a lower rotary tool 11, which modify the flat support by printing, embossing, upsetting, cutting, waste ejection, etc., with a view to obtaining a packaging.
  • the rotary tools 10 and 11 are mounted parallel to each other in the transformation unit 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 10b and 11b of the rotary tools 10 and 11, on the side opposite the driver, are driven in rotation by motorized drive means (not shown).
  • the rotary tools 10 and 11 rotate in opposite directions around a respective axis of rotation A1 and A2 (Arrows Fs and Fi on the Fig. 2 ).
  • the flat support passes into the gap located between the rotary tools 10 and 11, to be embossed there, and/or upset, and/or cut out, and/or printed.
  • the rotary tools, the upper rotary tool 10 or the lower rotary tool 11, respectively comprise a mandrel 12 and a removable sleeve 13, which can be inserted on the mandrel 12 in the transverse direction T ( Fig. 2 , Arrow G).
  • T transverse direction
  • the sleeves 13 are inexpensive compared to the price of the rotary tool 10 and 11 complete. It is therefore advantageous to use the same chuck 12 in combination with several sleeves 13, rather than providing for the acquisition of several complete rotary tools 10 and 11.
  • the sleeve 13 has a generally cylindrical shape.
  • the mandrel 12 and the sleeve 13 are made of metallic material, the mandrel 12 is for example steel and the sleeve 13 aluminum.
  • the front and rear ends 10a, 11a, 10b, 11b of the mandrels 12 (or journals) form the ends of the rotary tools 10 and 11 intended to cooperate with the front and rear bearings of the transformation unit 7.
  • the front and rear bearings are respectively carried by a tool holder upright 16 arranged at the front of the frame, also called a turret, and a tool holder upright arranged at the rear of the frame.
  • the turret 16 extends vertically and has a frame shape with a central passage for the rotary tools 10 and 11.
  • the rotary tools 10 and 11 are parallel to each other.
  • the rotary tools 10 and 11 are one above the other, and extend along 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 ).
  • a 20 ( Figs. 3 to 5 ) is provided for the assembly, disassembly of the chuck 12 or the complete rotary tool 10 and 11, in or out of the processing unit 7, as well as for their transport.
  • the transport carriage 20 comprises a tool holder head 21 and a mobile base 22.
  • the mobile base 22 comprises a trunk 23 terminated by a foot 24 provided with rolling elements 25.
  • the foot 24 extends in the direction of advance of the transport carriage 20.
  • the rolling elements 25 are for example wheels, the rear wheels being for example mounted on a pivot.
  • the trunk 23 also includes a gripping means 28, arranged at the rear, to push, pull, manually guide the movement of the transport carriage 20 in the factory.
  • the tool holder head 21 is provided with an upper port 29 and a lower port 30 intended to receive a respective tool end 12.
  • the tool end is either that of a mandrel 12 alone, or that of a mandrel 12 provided with a sleeve 13, that is to say that of a complete rotary tool 10 and 11, or that from a one-piece tool.
  • Upper and lower ports 29 and 30 of tool head 21 are identical. They are arranged one above the other. Once mounted in the tool holder head 21, the chucks 12 or rotary tools 10 and 11 extend parallel and remain spaced apart by a predetermined spacing. They protrude from the tool head 21 in the direction of advance of the transport carriage 20.
  • the tool holder head 21 thus makes it possible to arrange the rotary tools 10 and 11 so that they can be easily mounted/dismounted in the processing unit 7.
  • Their parallel arrangement according to a predetermined spacing in the transport carriage 20 allows their transfer without additional handling of the rotary tools 10 and 11 already pre-positioned at the level of the bearings of the transformation group 7.
  • the risks of collision between the rotary tools 10 and 11 are thus reduced, but also between the rotary tools 10 and 11 and the transformation group 7.
  • the positioning of the rotary tools 10 and 11 is also facilitated in the axis of the bearings of the transformation group 7.
  • the number of operations is reduced and the handling of the rotary tools 10 and 11, heavy , is facilitated.
  • the tool holder head 21 may comprise a front holding interface, intended to cooperate with the turret 16 of the transformation unit 7, to fix the tool 21 to the turret 16.
  • the fixing of the transport carriage 20 to the transformation unit 7 allows it to be the transformation unit 7 which references the precise positioning of the chuck 12 or of the tool.
  • the front holding interface is configured to suspend the tool holder head 21 from the turret 16 of the transformation unit 7.
  • the attachment of the tool holder head 21 by suspension to the turret 16 is easy to perform and can moreover be made fully automatic, in particular through the use of a lifting device of the transport trolley 20, configured to mount ( Figs. 3 and 4 ) or down ( Fig. 5 ) the tool head 21 relative to the foot 24.
  • the lifting device comprises an actuator, such as a hydraulic cylinder 31 operable by a lever 32.
  • the lifting device may also comprise two guide rails 33, arranged vertically in the trunk 23 of the mobile base 22, on either side of the tool holder head 21, to guide the vertical movement of the tool holder head 21 along the trunk 23.
  • the lifting device thus makes it possible to lift and lower heavy loads such as the rotary tool elements 10 and 11 to suspend the tool holder head 21 on the turret 16 of the transformation unit 7 but also makes it possible to make the handling of the carriage 20 transport to the factory safer by lowering the center of gravity of the load. Indeed, the lowering of the loads during the conveying of the rotary tools 10 and 11 in the factory makes it possible to prevent the transport carriage 20 from being unbalanced by the rotary tools 10 and 11 cantilevered.
  • the front holding interface comprises, for example, at least one first hooking member intended to cooperate with at least one first complementary hooking member of the turret 16.
  • the first attachment members comprise for example at least a first hook 34 capable of cooperating with a first roller 35 mounted free in rotation of the turret 16.
  • the rollers 35 make it possible to facilitate the assembly and disassembly of the head -tool 21 on turret 16, limiting the risk of jamming.
  • the first hooks 34 are carried by the tool holder head 21 and the rollers 35 by the turret 16, or vice versa.
  • the tool holder head 21 comprises for example four first hooks 34.
  • the first hooks 34 are part of a rectangle formed around the upper and lower ports 29 and 30 of the tool holder head 21.
  • the rollers 35 protrude longitudinally.
  • the first attachment members allow the tool holder head 21 to be guided and fixed to the transformation unit 7, in particular by avoiding movements of the tool holder head 21 in the transverse direction, in the axis of rotation of the tools. wheels 10 and 11.
  • the front holding interface may also comprise at least a first shoulder 36, intended to cooperate with a support block 37 fixed to the turret 16 to carry the tool holder head 21 ( Figs. 6 and 7 ).
  • the front holding interface comprises for example two first shoulders 36.
  • the first shoulder 36 is for example formed in a recess.
  • Each first shoulder 36 is for example arranged between two first hooks 34.
  • Each first shoulder 36 and two first hooks 34 of the first attachment members are for example aligned vertically and can be made in the edge of the same plate of the door head -tool 21, for example by cutting.
  • the first hooks 34 are substantially arranged above the first rollers 35. This allows the tool holder head 21 not to rest on the first rollers 35 but that most of the weight of the rotary tools 10 and 11 is taken up by the support wedges 37 of the turret 16.
  • the support wedges 37 thus make it possible to relieve the first rollers 35 of the weight of the rotary tools 10 and 11 substantially more fragile.
  • the support wedges 37, fixed to the turret 16, form the vertical reference.
  • the front holding interface may comprise at least one guide slot 38 intended to cooperate with a complementary guide pin 39 carried by the turret 16.
  • Two guide slots 38 may for example be provided, aligned vertically with the first attachment members, between the latter, and on either side of the upper and lower ports 29 and 30.
  • the guide slot 38 has an L-shape of thinner thickness than the openings of the first hooks 34 of the first guide members and than the recesses of the first shoulders 36, so as to guide the docking of the tool holder head 21 on the turret 16.
  • the guide pin 39 which is more robust than the rollers 35 thus allows the guiding of the tool holder head 21 in the direction in the axis of rotation of the rotary tools 10 and 11 then, vertically, following the trajectory L-shaped guide slots 38, avoiding possible collisions between the hooks of the tool holder head and the rollers 35 of the turret 16.
  • the guide slot 38 is for example arranged between the first shoulder 36 and a first hook 34 of the first attachment members.
  • the guide slot 38, the first shoulder 36 and the first hooks 34 are for example aligned vertically and made in the edge of the same plate of the tool holder head 21.
  • the tool holder head 21 may further comprise a locking device configured to assume an unlocked position ( Fig. 9 ) or a locked position ( Fig. 8 ) in which the locking device locks the holding of the front ends of the chucks 12 or the tools 10 and 11 in the upper and lower ports 29 and 30.
  • the locking device comprises an articulated system 40, two locking pins 41 and an actuating lever 42.
  • the actuating lever 42 is connected to the upper and lower locking pins 41, by the articulated system 40 so that actuation of the lever 42 positions the locking pins 41 in the unlocked position in which the locking pins 41 are retracted into the upper and lower ports 29 and 30, away from the rotary tools 10 and 11 ( Fig. 9 ) or in the locking position in which the locking pins 41 pass through the upper and lower ports 29 and 30 and fit into corresponding cavities 43 formed in the front ends of the rotary tools 10 and 11 ( Fig. 10 ).
  • the articulated system 40 comprises for example two arms articulated at the end of the actuating lever 42, opposite to one end connected to an actuator 44, such as a pneumatic cylinder of the locking device ( Fig. 11 ).
  • Each arm is articulated so that, for example, when the lever 42 is in the low position ( Fig. 8 ), the locking pins 41 are inserted into the cavities 43 of the tools 10 and 11.
  • the pivoting of the actuating lever 42 upwards (Arrow F1) shifts the upper arm upwards (Arrow F2), removing the locking pin 41 from the cavity 43 of the upper rotary tool 10 and shifts the lower arm down (Arrow F3), removing the locking pin 41 from the cavity 43 of the lower rotary tool 11.
  • the locking device may also include end-of-travel sensors making it possible to automate the locking and unlocking of the holding of the end of the mandrel 12 or of the tool 10 and 11, and thus to better synchronize the succession of operations, reducing collision risks.
  • the upper and lower ports 29 and 30 may be provided with an elastic device, such as a respective thrust spring 45, intended to bear against the end of the chuck 12 or of the tool, for example via a washer 46 in abutment in the bottom of the bore of the ports 29 and 30.
  • the elastic device is arranged so as to be able to be pushed back by the mandrel 12 or the tool in the bottom of the housing of the upper or lower port 29 and 30 ( Fig. 10 ). Collisions of the chuck 12 or the tool 10 and 11 are thus avoided with the tool holder head 21 in the unlocked position by manipulation of the chuck 12 or the tool 10 and 11 at the rear end by the clamp of the means of drive, opposite driver side.
  • the tool-carrying head 21 can be provided to be removable, that is to say detachable from the mobile base 22 of the transport carriage 20.
  • the mobile base 22 can be common for different heads, such as sleeve-carrying heads and/or tool heads of different diameters.
  • the tool holder head 21 comprises for example a rear holding interface intended to cooperate with the mobile base 22 and comprising at least one second member for hanging intended to cooperate with at least one second complementary attachment member of the mobile base 22.
  • the second attachment members comprise at least a second hook 47 capable of cooperating with a second roller 48 mounted free in rotation of the mobile base 22.
  • the rollers 48 make it possible to facilitate the assembly and disassembly of the carrier head tool 21 on the mobile base 22, limiting the risk of jamming.
  • the second hooks 47 are carried by the tool holder head 21 and the rollers 48 by the mobile base 22, or vice versa.
  • the tool holder head 21 comprises for example four second hooks 47.
  • the four second hooks 47 are part of a rectangle formed around the upper and lower ports 29 and 30 of the tool holder head 21, for example at the rear of the first four hooks 34 of the first hanging devices.
  • the second rollers 48 protrude longitudinally.
  • the second attachment members allow the guiding and fixing of the tool holder head 21 to the mobile base 22.
  • the rear holding interface may also include at least one second shoulder 49, intended to cooperate with a support block 50 fixed to the mobile base 22 to carry the tool holder head 21 ( Figs. 4 and 6 ).
  • the rear holding interface comprises for example two second shoulders 49.
  • the second shoulder 49 is for example formed in a recess.
  • Each second shoulder 49 is for example arranged between two second hooks 47.
  • Each second shoulder 49 and two second hooks 47 of the second attachment members are for example aligned vertically and can be made in the edge of the same plate of the door head -tool 21, for example by cutting.
  • the second hooks 47 are substantially arranged above the second rollers 48. This allows the tool holder head 21 not to rest on the second rollers 48 but that most of the weight of the rotary tools 10 and 11 is taken up by the support wedges 50 of the mobile base 22.
  • the support wedges 50 thus make it possible to relieve the second rollers 48 of the weight of the rotary tools 10 and 11 noticeably more fragile.
  • the operator wishes to mount the rotary tools in a transformation unit 7.
  • the operator provided with a tool holder head 21 of chucks 12 or rotary tools 10 and 11, by inserting their front ends into the housings of the ports upper and lower 29 and 30. Then, the holding of the front ends of the chucks 12 or the tools is locked in the upper and lower ports 29 and 30 ( Fig. 8 ) and the tool holder head 21 fitted with chucks 12 or rotary tools 10 and 11 is suspended on the mobile base 22 of the transport carriage 20.
  • the transport trolley 20 transports the rotary tools 10 and 11 in the low position to the processing unit 7 ( Fig. 5 ) where he raises the tool head 21 and the rotary tools 10 and 11 to the high position by the lifting device ( Figs. 3 and 4 ).
  • the tool holder head 21 is then raised so that the guide pin 39 fits into the guide slot 38, the support wedges 37 fit under the first shoulders 36 and the first rollers 35 fit into the openings of the first hooks 34. Then, the operator substantially advances the transport carriage 20 until the guide pin 39 is at the bottom of the horizontal part of the guide slot 38.
  • the transport carriage 20 then lowers substantially the tool holder head 21, so that the tool holder head 21 is suspended on the holding wedges 50 of the turret 16, that the guide pin 39 is received at the bottom of the upper part of the guide slot 38 and that the first hooks 34 are arranged substantially above the first rollers 35.
  • the tool holder head 21 of the transport carriage 20, provided with mandrels 12 or tools 10 and 11 is then fixed to the turret 16 ( Figs. 6 and 7 ).
  • the clamps of the motorized drive means on the opposite driver side then cooperate with the rear ends of the chucks 12 or the tools 10 and 11, locking the holding of the rear ends of the chucks or tools by the transformation unit 7.
  • the holding of the front ends of the tools is then unlocked by the transport carriage 20.
  • the elastic device then allows the substantial movement of the mandrel 12 or of the tool by the clamp in the upper or lower ports 29 and 30, avoiding collisions ( Fig. 9 ).
  • the elastic device guarantees contact at the bottom of the pliers.
  • the operator To dismantle the tools of the transformation unit 7, the operator begins by fixing the tool holder head 21 of the transport carriage 20 without tools to the turret 16. Then the operator unlocks.
  • the front ends of the chucks 12 or of the tools 10 and 11 are engaged in the upper and lower ports 29 and 30 of the tool holder head 21 fixed to the turret 16. Then, the operator locks the holding of the front ends of the chucks 12 or tools 10 and 11 by the transport carriage 20 and the operator unlocks the holding of the rear ends of the chucks 12 or tools 10 and 11 by the transformation unit 7 ( Fig. 8 ).

Description

La présente invention concerne une tête porte-outil, destinée à un chariot de transport d'outils rotatifs, pour un groupe de transformation d'un support plan. L'invention concerne un chariot de transport, muni d'une tête porte-outil pour un groupe de transformation d'un support plan. L'invention se rapporte également à un procédé de montage d'outil dans un groupe de transformation d'un support plan, et un procédé de démontage d'outil dans un groupe de transformation d'un support plan.The present invention relates to a tool-carrying head, intended for a trolley for transporting rotary tools, for a unit for converting a flat support. The invention relates to a transport carriage, provided with a tool-holder head for a unit for transforming a flat support. The invention also relates to a method for mounting a tool in a group for transforming a plane support, and a method for dismantling a tool in a group for transforming a plane support.

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 planar support is then cut in 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 des 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 units for transformation, embossing, upsetting, cutting, waste ejection, or printing, respectively comprise an upper cylindrical transformation tool, and a lower cylindrical transformation tool, between which the flat support circulates to be transformed. In operation, the rotary transformation tools rotate at the same speed, but in opposite directions to each other. The planar support passes through the gap between the rotary tools, which shape a relief by embossing, shape a relief by upsetting, cut the planar support into rotary die cuts, eject waste, or imprint a pattern when impression.

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.Cylinder change operations 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 replaces the new cylinder in the transformation machine by reconnecting it to its drive. The weight of a cylinder is significant, around 50 kg to 2,000 kg. To take it out, 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 demandés actuellement. De plus, des outils sont relativement coûteux à réaliser, et ils ne deviennent rentables qu'avec une production extrêmement importante.Due to its rather high weight, a cylinder change is not very quick to perform. In addition, many tool changes can be necessary to obtain very many different boxes from each other. These tools must be ordered well in advance, which becomes incompatible with the production changes currently required. In addition, tools are relatively expensive to produce, and they only become profitable with an extremely large production.

Ainsi certains groupes de transformation , voir par exemple le dispositifmobile décrit dans le document EP1598275 , 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. Le mandrin peut également être aussi changé et est choisi en fonction de son diamètre.Thus some transformation groups, see for example the mobile device described in the document EP1598275 , provide for the use of rotary tools consisting of a chuck and a shape-carrying removable sleeve ensuring the transformation, which can be inserted on the chuck. 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. The mandrel can also be changed and is chosen according to its diameter.

Cependant, les opérations de chargement et d'échange des outils rotatifs dans les groupes de transformation, restent délicates pour les opérateurs, en raison notamment des précisions de montage exigées dans le groupe et du poids important de ces outils. Ainsi, les producteurs d'emballage cherchent aujourd'hui à faciliter la manipulation des outils rotatifs vers ou à l'écart des groupes de transformation, de manière que ceux-ci puissent être changés rapidement, de façon reproductible et de manière simple.However, the operations of loading and exchanging the rotary tools in the transformation units remain tricky for the operators, in particular because of the mounting precision required in the unit and the heavy weight of these tools. Thus, packaging producers today seek to facilitate the handling of rotating tools towards or away from the transformation units, so that these can be changed quickly, reproducibly and simply.

Exposé de l'inventionDisclosure of Invention

Un but de la présente invention est de proposer des dispositifs et procédés qui résolvent au moins en partie les inconvénients de l'état de la technique.An object of the present invention is to provide devices and methods which at least partially resolve the drawbacks of the state of the art.

A cet effet, l'invention a pour objet une tête porte-outil pour un chariot de transport d'outils rotatifs de groupe de transformation d'un support plan selon la revendication 1. La tête porte-outil comprend un port supérieur et un port inférieur. Le port supérieur et le port inférieur sont agencés l'un au-dessus de l'autre, et sont destinés à recevoir respectivement une extrémité avant d'un outil rotatif supérieur et une extrémité avant d'un outil rotatif inférieur.To this end, the subject of the invention is a tool-holder head for a carriage for transporting rotary tools of a transformation unit of a plane support according to claim 1. The tool-holder head comprises an upper port and a port inferior. The upper port and the lower port are arranged one above the other, and are intended to respectively receive a front end of an upper rotary tool and a front end of a lower rotary tool.

Le chariot de transport est équipé d'une base mobile. La tête porte-outil comprend au moins un port, destiné à recevoir une extrémité avant d'un outil rotatif, et positionné en porte-à faux par rapport à la base mobile, de façon à pouvoir faire pénétrer l'outil rotatif à l'intérieur du groupe de transformation.The transport trolley is equipped with a mobile base. The tool head comprises at least one port, intended to receive a front end of a rotary tool, and positioned cantilevered with respect to the mobile base, so as to be able to make the rotary tool penetrate inside the transformation group.

Un outil est défini comme étant un mandrin, un ensemble mandrin avec manchon, un outil d'un seul tenant, ou d'autres encore. Le groupe de transformation est défini comme étant un groupe de refoulage, un groupe de gaufrage, un groupe de découpe rotative, un groupe d'éjection des déchets, un groupe imprimeur, choisi seul ou en combinaison, ou d'autres encore.A tool is defined as being a chuck, a chuck and sleeve assembly, a one-piece tool, or others. The converting group is defined as being an upsetting group, an embossing group, a rotary die-cutting group, a waste ejection group, a printing group, chosen alone or in combination, or still others.

L'agencement des outils parallèles selon un écartement prédéterminé dans le chariot de transport permet leur transfert sans manipulations supplémentaires des outils rotatifs déjà pré-positionnés au niveau des paliers du groupe de transformation. La tête porte-outil permet ainsi d'agencer le ou les outils rotatifs, de façon à ce qu'il puisse être facilement monté/démonté dans le groupe de transformation. Ainsi les risques de collision entre les outils rotatifs mais aussi entre les outils rotatifs et le groupe de transformation sont diminués. Le positionnement des outils rotatifs est également facilité dans l'axe des paliers du groupe de transformation. Par ailleurs, le nombre d'opérations est réduit et la manutention des outils rotatifs, lourds, est facilitée.The arrangement of the parallel tools according to a predetermined spacing in the transport carriage allows their transfer without additional handling of the rotary tools already pre-positioned at the level of the bearings of the transformation unit. The tool holder head thus makes it possible to arrange the rotary tool(s) so that it can be easily mounted/dismounted in the transformation unit. Thus the risks of collision between the rotating tools but also between the rotating tools and the transformation unit are reduced. The positioning of the rotary tools is also facilitated in the axis of the bearings of the transformation unit. Furthermore, the number of operations is reduced and the handling of heavy rotating tools is facilitated.

Selon un exemple de réalisation, la tête porte-outil comporte une interface de maintien, destinée à coopérer avec une tourelle du groupe de transformation, pour fixer la tête porte-outil à la tourelle. La fixation du chariot de transport au groupe de transformation permet que ce soit le groupe de transformation qui référence le positionnement précis des outils rotatifs.According to an exemplary embodiment, the tool holder head comprises a holding interface, intended to cooperate with a turret of the transformation unit, to fix the tool holder head to the turret. Attaching the transport trolley to the processing unit allows the processing unit to reference the precise positioning of the rotating tools.

L'interface de maintien est par exemple configurée pour suspendre la tête porte-outil à la tourelle du groupe de transformation. La fixation de la tête porte-outil par suspension à la tourelle est ergonomique, notamment grâce à l'utilisation d'un dispositif élévateur du chariot de transport, configuré pour monter ou descendre la tête porte-outil par rapport à la base mobile du chariot de transport.The holding interface is for example configured to suspend the tool holder head from the turret of the transformation unit. The fixing of the tool holder head by suspension to the turret is ergonomic, in particular thanks to the use of a lifting device of the transport trolley, configured to raise or lower the tool holder head with respect to the mobile base of the trolley transport.

Par exemple, l'interface de maintien comporte au moins un premier organe d'accroché destiné à coopérer avec au moins un premier organe d'accroché complémentaire de la tourelle. Les premiers organes d'accroché permettent le guidage et la fixation de la tête porte-outil au groupe de transformation, notamment en évitant les mouvements de la tête porte-outil dans la direction transversale, dans l'axe de rotation des outils rotatifs.For example, the holding interface comprises at least one first hooking member intended to cooperate with at least one first complementary hooking member of the turret. The first attachment members allow the guiding and fixing of the tool holder head to the transformation unit, in particular by avoiding movements of the tool holder head in the transverse direction, in the axis of rotation of the rotary tools.

Les premiers organes d'accroché comportent par exemple au moins un premier crochet, apte à coopérer avec un premier galet monté libre en rotation. Les galets permettent de faciliter le montage et le démontage de la tête porte-outil sur la tourelle, en limitant les risques de coincements.The first attachment members comprise for example at least a first hook, capable of cooperating with a first roller mounted free in rotation. The rollers facilitate assembly and disassembly of the tool holder head on the turret, limiting the risk of jamming.

Par exemple, l'interface de maintien comporte au moins un premier épaulement destiné à coopérer avec une cale de soutien de la tourelle pour porter la tête porte-outil, de manière que lorsque la tête porte-outil est portée par la cale de soutien, les premiers crochets soient sensiblement disposés au-dessus des premiers galets. Cela permet que la tête porte-outil ne repose pas sur les premiers galets mais que l'essentiel du poids des outils rotatifs soit repris par les cales de soutien de la tourelle. Les cales de soutien permettent ainsi de soulager les premiers galets du poids des outils rotatifs sensiblement plus fragiles. Les butées de soutien, fixées à la tourelle, forment la référence verticale.For example, the holding interface comprises at least a first shoulder intended to cooperate with a support wedge of the turret to carry the tool holder head, so that when the tool holder head is carried by the support wedge, the first hooks are substantially arranged above the first rollers. This means that the tool head does not rest on the first rollers but that most of the weight of the rotating tools is taken up by the turret support blocks. The support wedges thus make it possible to relieve the first rollers of the weight of the substantially more fragile rotary tools. The support stops, fixed to the turret, form the vertical reference.

Par exemple, l'interface de maintien comporte au moins une lumière de guidage, destinée à coopérer avec un pion de guidage complémentaire porté par la tourelle, la lumière de guidage présentant une forme en L d'épaisseur plus fine que les ouvertures des premiers crochets. La lumière et le pion de guidage permettent de guider l'accostage de la tête porte-outil sur la tourelle. Le pion de guidage plus robuste que les galets permet ainsi le guidage de la tête porte-outil dans la direction dans l'axe de rotation des outils rotatifs puis, verticalement, en suivant la trajectoire en forme de L des lumières de guidage, en évitant d'éventuelles collisions entre le ou les crochets du porte-outil et les galets de la tourelle.For example, the holding interface comprises at least one guide light, intended to cooperate with a complementary guide pin carried by the turret, the guide light having an L-shape of thinner thickness than the openings of the first hooks . The light and the guide pin make it possible to guide the docking of the tool holder head on the turret. The guide pin, which is more robust than the rollers, thus allows the tool holder head to be guided in the direction in the axis of rotation of the rotary tools then, vertically, following the L-shaped trajectory of the guide lights, avoiding possible collisions between the hook(s) of the tool holder and the rollers of the turret.

Selon un exemple de réalisation, la tête porte-outil comporte une deuxième interface avant de maintien, destinée à coopérer avec une base mobile du chariot de transport, pour fixer la tête porte-outil à la base mobile. La tête porte-outil est alors amovible, de sorte que la base mobile peut être commune pour différentes têtes porte-outil.According to an exemplary embodiment, the tool holder head comprises a second front holding interface, intended to cooperate with a mobile base of the transport carriage, to fix the tool holder head to the mobile base. The tool holder head is then removable, so that the mobile base can be common for different tool holder heads.

Par exemple, la deuxième interface de maintien est configurée pour suspendre la tête porte-outil à la base mobile.For example, the second holding interface is configured to suspend the tool holder head from the mobile base.

Par exemple, la deuxième interface de maintien comporte au moins un second organe d'accroché, destiné à coopérer avec au moins un second organe d'accroché complémentaire de la base mobile, les seconds organes d'accroché comportant au moins un second crochet, apte à coopérer avec un second galet monté libre en rotation. Les galets permettent de faciliter le montage et le démontage de la tête porte-outil sur la base mobile, en limitant les risques de coincements.For example, the second holding interface comprises at least one second hooked member, intended to cooperate with at least one second hooked member complementary to the mobile base, the second hooked members comprising at least one second hook, capable to cooperate with a second roller mounted free in rotation. The rollers facilitate assembly and disassembly of the tool holder head on the mobile base, limiting the risk of jamming.

Par exemple, la deuxième interface de maintien comporte au moins un deuxième épaulement destiné à coopérer avec une cale de soutien de la base mobile pour porter la tête porte-outil, de manière que lorsque la tête porte-outil est portée par la cale de soutien, les seconds crochets soient sensiblement disposés au-dessus des seconds galets.For example, the second holding interface comprises at least a second shoulder intended to cooperate with a support wedge of the mobile base to carry the tool holder head, so that when the tool holder head is carried by the support wedge , the second hooks are substantially arranged above the second rollers.

Selon un exemple de réalisation, la tête porte-outil comporte un dispositif de verrouillage configuré pour prendre une position déverrouillée ou une position de verrouillage, dans laquelle le dispositif de verrouillage verrouille le maintien de l'extrémité avant de l'outil dans les ports supérieur et inférieur.According to an exemplary embodiment, the tool holder head comprises a locking device configured to assume an unlocked position or a locking position, in which the locking device locks the holding of the front end of the tool in the upper ports and lower.

Selon un exemple de réalisation, le dispositif de verrouillage comporte un système articulé, un pion de verrouillage supérieur, un pion de verrouillage inférieur et un levier d'actionnement raccordé aux pions de verrouillage supérieur et inférieur par le système articulé de sorte que l'actionnement du levier positionne les pions de verrouillage en position déverrouillée ou de verrouillage.According to an exemplary embodiment, the locking device comprises an articulated system, an upper locking pin, a lower locking pin and an actuating lever connected to the upper and lower locking pins by the articulated system so that the actuation of the lever positions the locking pins in the unlocked or locked position.

Selon un exemple de réalisation, les ports supérieur et inférieur comportent un dispositif élastique respectif, destiné à venir en appui contre l'extrémité avant de l'outil et pouvant être repoussé par celui-ci vers le fond du logement du port supérieur ou inférieur. Les collisions des outils sont ainsi évitées avec la tête porte-outil en position déverrouillée par manipulation des outils aux extrémités arrière par la pince des moyens d'entraînement motorisés, côté opposé conducteur. L'extrémité arrière de l'outil est au fond de la pince des moyens d'entrainement.According to an exemplary embodiment, the upper and lower ports comprise a respective elastic device, intended to bear against the front end of the tool and which can be pushed back by the latter towards the bottom of the housing of the upper or lower port. Collisions of the tools are thus avoided with the tool holder head in the unlocked position by manipulation of the tools at the rear ends by the gripper of the motorized drive means, on the side opposite the driver. The rear end of the tool is at the bottom of the clamp of the drive means.

L'invention a aussi pour objet un chariot de transport comportant un pied muni d'éléments roulants selon la revendication 12, caractérisé en ce qu'il comporte une tête porte-outil telle que décrite et revendiquée ci-dessous, et un dispositif élévateur configuré pour monter ou descendre la tête porte-outil par rapport au pied. Le dispositif élévateur permet ainsi de lever et descendre des charges importantes telles que les éléments d'outils rotatifs pour suspendre la tête porte-outil sur la tourelle du groupe de transformation mais permet aussi de rendre la manutention du chariot de transport en usine plus sûre en abaissant le centre de gravité de la charge. En effet, l'abaissement des charges lors du convoyage des outils rotatifs dans l'usine permet d'éviter que le chariot de transport ne soit déséquilibré par les outils rotatifs en porte-à-faux.The invention also relates to a transport trolley comprising a foot provided with rolling elements according to claim 12, characterized in that it comprises a tool holder head as described and claimed below, and a lifting device configured to raise or lower the tool holder head relative to the foot. The lifting device thus makes it possible to lift and lower heavy loads such as the elements of rotary tools to suspend the tool holder head on the turret of the transformation unit but also makes it possible to make the handling of the transport trolley in the factory safer in lowering the center of gravity of the load. Indeed, the lowering of the loads during the conveying of the rotating tools in the factory makes it possible to prevent the transport trolley from being unbalanced by the rotating tools cantilevered.

L'invention a aussi pour objet un procédé de montage d'outil dans un groupe de transformation selon la revendication au moyen d'un chariot de transport tel que décrit et revendiqué ci-dessous. Le procédé de montage d'outil comprend les étapes suivantes consistant à:

  • faire entrer le chariot de transport dans le groupe de transformation,
  • fixer la tête porte-outil du chariot de transport, munie d'un outil à une tourelle du groupe de transformation,
  • verrouiller une extrémité arrière de l'outil,
  • déverrouiller une extrémité avant de l'outil du port de la tête porte-outil,
  • désaccoupler la tête porte-outil de la tourelle,
  • faire sortir le chariot de transport du groupe de transformation, et
  • engager les paliers avant sur les extrémités de l'outil.
The invention also relates to a method for mounting a tool in a processing unit according to claim by means of a transport carriage as described and claimed below. The tool mounting method includes the following steps:
  • bring the transport trolley into the processing unit,
  • attach the tool holder head of the transport carriage, fitted with a tool, to a turret of the transformation unit,
  • lock a rear end of the tool,
  • unlock a front end of the tool from the port of the tool holder head,
  • uncouple the tool head from the turret,
  • take the transport trolley out of the transformation unit, and
  • engage the front bearings on the ends of the tool.

L'invention a encore pour objet un procédé de démontage d'outil dans un groupe de transformation transformation selon la revendication 14, au moyen d'un chariot de transport tel que décrit et revendiqué ci-dessous. Le procédé de démontage d'outil comprend les étapes suivantes consistant à:

  • faire entrer le chariot de transport dans le groupe de transformation,
  • fixer la tête porte-outil du chariot de transport, démunie d'un outil à une tourelle du groupe de transformation,
  • verrouiller une extrémité avant de l'outil au port de la tête porte-outil,
  • déverrouiller une extrémité arrière de l'outil,
  • désaccoupler la tête porte-outil de la tourelle, et
  • faire sortir le chariot de transport muni de l'outil du groupe de transformation.
Another subject of the invention is a method for dismantling a tool in a transformation unit according to claim 14, by means of a transport carriage as described and claimed below. The tool dismantling process includes the following steps:
  • bring the transport trolley into the processing unit,
  • fix the tool holder head of the transport carriage, without a tool, to a turret of the transformation unit,
  • locking a front end of the tool to the port of the tool holder head,
  • unlock a rear end of the tool,
  • uncouple the toolhead from the turret, and
  • remove the transport carriage fitted with the tool from the transformation unit.

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 une vue en perspective d'un chariot de transport portant deux outils rotatifs en position haute;
  • la Figure 4 représente le chariot de transport de la Figure 3 vue de l'arrière;
  • la Figure 5 représente le chariot de transport de la Figure 3 en position basse;
  • la Figure 6 représente une vue partielle du chariot de transport de la Figure 3 fixé à la tourelle d'un groupe de transformation;
  • la Figure 7 est une vue en coupe verticale du chariot de transport fixé à la tourelle illustrant des premier et deuxième organes d'accroché de la tête porte-outil;
  • la Figure 8 montre une vue de face de la tête porte-outil en position de verrouillage;
  • la Figure 9 montre une vue similaire à la Figure 8 en position déverrouillée;
  • la Figure 10 représente une vue en coupe d'éléments d'une tête de transport pourvue d'outils rotatifs; et
  • la Figure 11 représente une vue en perspective du chariot de transport de la
Other advantages and characteristics will appear on reading the description of the invention, as well as on the appended figures which represent a non-limiting embodiment of the invention and in which:
  • the Figure 1 is a general view of an example of a plane support transformation line;
  • the Figure 2 shows a perspective view of an upper rotary tool and a lower rotary tool;
  • the Figure 3 shows a perspective view of a transport carriage carrying two rotary tools in the high position;
  • the Figure 4 represents the transport trolley of the Figure 3 rear view;
  • the Figure 5 represents the transport trolley of the Figure 3 in the down position;
  • the Figure 6 represents a partial view of the transport trolley of the Figure 3 attached to the turret of a transformation group;
  • the Picture 7 is a vertical sectional view of the transport carriage fixed to the turret illustrating first and second attachment members of the tool holder head;
  • the Figure 8 shows a front view of the tool head in the locked position;
  • the Figure 9 shows a view similar to the Figure 8 in the unlocked position;
  • the Picture 10 shows a sectional view of elements of a transport head provided with rotary tools; and
  • the Picture 11 shows a perspective view of the transport trolley of the

Figure 3 fixé à la tourelle d'un groupe de transformation. Figure 3 attached to the turret of a transformation group.

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 non-driver's side.

Exposé détaillé des formes de réalisation préféréesDetailed Disclosure of 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 transforming a flat support, such as flat cardboard or paper in a continuous strip wound on a reel, makes it possible to carry out various operations and to obtain packaging such as folding boxes. As represented by Fig. 1 , the converting line comprises, arranged one after the other in the running order of the flat support, an unwinder station 1, several printing units 2, one or more embossing units in series followed by a or several upsetting groups in series 3, followed by a rotary cutting group 4 or platen cutting, and a receiving station 5 for the finished articles.

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 transformation group 7 comprises an upper rotary tool 10 and a lower rotary tool 11, which modify the flat support by printing, embossing, upsetting, cutting, waste ejection, etc., with a view to obtaining a packaging.

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 10b et 11b des outils rotatifs 10 et 11, côté opposé conducteur, sont entraînées en rotation par des moyens d'entraînement motorisés (non représentés).The rotary tools 10 and 11 are mounted parallel to each other in the transformation unit 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 10b and 11b of the rotary tools 10 and 11, on the side opposite the driver, are driven in rotation by motorized drive means (not shown).

En fonctionnement, les outils rotatifs 10 et 11 tournent dans des sens opposés autour d'un axe de rotation A1 et A2 respectif (Flèches Fs et Fi sur la Fig. 2). 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.In operation, the rotary tools 10 and 11 rotate in opposite directions around a respective axis of rotation A1 and A2 (Arrows Fs and Fi on the Fig. 2 ). The flat support passes into the gap located between the rotary tools 10 and 11, to be embossed there, and/or upset, and/or cut out, and/or printed.

Les outils rotatifs, l'outil rotatif supérieur 10 ou l'outil rotatif inférieur 11, comportent respectivement un mandrin 12 et un manchon amovible 13, insérable sur le mandrin 12 dans la direction transversale T (Fig. 2, Flèche G). 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 couteux 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.The rotary tools, the upper rotary tool 10 or the lower rotary tool 11, respectively comprise a mandrel 12 and a removable sleeve 13, which can be inserted on the mandrel 12 in the transverse direction T ( Fig. 2 , Arrow G). Thus, when an operator wishes to change the rotary tools 10 and 11, it suffices to change the sleeves 13 rather than the entire rotary tool 10 and 11. The handling of the sleeve 13 being facilitated by its low weight relative to that of the complete rotary tool 10 and 11, the change of work can be done quickly. In addition, the sleeves 13 are inexpensive compared to the price of the rotary tool 10 and 11 complete. It is therefore advantageous to use the same chuck 12 in combination with several sleeves 13, rather than providing for the acquisition of several complete rotary tools 10 and 11.

Le manchon 13 présente une forme générale cylindrique. Le mandrin 12 et le manchon 13 sont en matériau métallique, le mandrin 12 est par exemple en acier et le manchon 13 en aluminium. Les extrémités avant et arrière 10a, 11a, 10b, 11b des mandrins 12 (ou tourillons), forment les extrémités des outils rotatifs 10 et 11 destinés à coopérer avec des paliers avant et arrière du groupe de transformation 7.The sleeve 13 has a generally cylindrical shape. The mandrel 12 and the sleeve 13 are made of metallic material, the mandrel 12 is for example steel and the sleeve 13 aluminum. The front and rear ends 10a, 11a, 10b, 11b of the mandrels 12 (or journals) form the ends of the rotary tools 10 and 11 intended to cooperate with the front and rear bearings of the transformation unit 7.

Les paliers avant et arrière sont respectivement portés par un montant porte-outil 16 agencé à l'avant du bâti, également appelé tourelle et un montant porte-outil agencé à l'arrière du bâti. La tourelle 16 s'étend verticalement et présente une forme de cadre avec un passage central pour les outils rotatifs 10 et 11.The front and rear bearings are respectively carried by a tool holder upright 16 arranged at the front of the frame, also called a turret, and a tool holder upright arranged at the rear of the frame. The turret 16 extends vertically and has a frame shape with a central passage for the rotary tools 10 and 11.

Une fois montés dans le groupe de transformation 7, les outils rotatifs 10 et 11, sont parallèles l'un par rapport à l'autre. Les outils rotatifs 10 et 11 sont 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).Once mounted in the transformation unit 7, the rotary tools 10 and 11 are parallel to each other. The rotary tools 10 and 11 are one above the other, and extend along 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 ).

Un chariot de transport 20 (Figs. 3 à 5) est prévu pour le montage, le démontage du mandrin 12 ou de l'outil rotatif 10 et 11 complets, dans ou hors du groupe de transformation 7, ainsi que pour leur transport.A 20 ( Figs. 3 to 5 ) is provided for the assembly, disassembly of the chuck 12 or the complete rotary tool 10 and 11, in or out of the processing unit 7, as well as for their transport.

Le chariot de transport 20 comporte une tête porte-outil 21 et une base mobile 22. La base mobile 22 comporte un tronc 23 terminé par un pied 24 muni d'éléments roulants 25. Le pied 24 s'étend dans la direction d'avance du chariot de transport 20. Les éléments roulants 25 sont par exemple des roues, les roues arrière étant par exemple montées sur pivot. Le tronc 23 comporte également un moyen de préhension 28, agencé à l'arrière, pour pousser, tirer, guider manuellement le déplacement du chariot de transport 20 dans l'usine.The transport carriage 20 comprises a tool holder head 21 and a mobile base 22. The mobile base 22 comprises a trunk 23 terminated by a foot 24 provided with rolling elements 25. The foot 24 extends in the direction of advance of the transport carriage 20. The rolling elements 25 are for example wheels, the rear wheels being for example mounted on a pivot. The trunk 23 also includes a gripping means 28, arranged at the rear, to push, pull, manually guide the movement of the transport carriage 20 in the factory.

La tête porte-outil 21 est munie d'un port supérieur 29 et d'un port inférieur 30 destinés à recevoir une extrémité d'outil 12 respective. L'extrémité d'outil est soit celle d'un mandrin 12 seul, soit celle d'un mandrin 12 pourvu d'un manchon 13, c'est-à-dire celle d'un outil rotatif 10 et 11 complet, soit celle d'un outil d'un seul tenant.The tool holder head 21 is provided with an upper port 29 and a lower port 30 intended to receive a respective tool end 12. The tool end is either that of a mandrel 12 alone, or that of a mandrel 12 provided with a sleeve 13, that is to say that of a complete rotary tool 10 and 11, or that from a one-piece tool.

Les ports supérieur et inférieur 29 et 30 de la tête porte-outil 21 sont identiques. Ils sont agencés l'un au-dessus de l'autre. Une fois montés dans la tête porte-outil 21, les mandrins 12 ou outils rotatifs 10 et 11 s'étendent parallèlement et restant maintenus espacés d'un écartement prédéterminé. Ils font saillie de la tête porte-outil 21 dans la direction d'avance du chariot de transport 20.Upper and lower ports 29 and 30 of tool head 21 are identical. They are arranged one above the other. Once mounted in the tool holder head 21, the chucks 12 or rotary tools 10 and 11 extend parallel and remain spaced apart by a predetermined spacing. They protrude from the tool head 21 in the direction of advance of the transport carriage 20.

La tête porte-outil 21 permet ainsi d'agencer les outils rotatifs 10 et 11 de manière que ceux-ci puissent être facilement montés/démontés dans le groupe de transformation 7. Leur agencement parallèle selon un écartement prédéterminé dans le chariot de transport 20 permet leur transfert sans manipulations supplémentaires des outils rotatifs 10 et 11 déjà pré-positionnés au niveau des paliers du groupe de transformation 7. Les risques de collision entre les outils rotatifs 10 et 11 sont ainsi diminués, mais aussi entre les outils rotatifs 10 et 11 et le groupe de transformation 7. le positionnement des outils rotatifs 10 et 11 est également facilité dans l'axe des paliers du groupe de transformation 7. Par ailleurs, le nombre d'opérations est réduit et la manutention des outils rotatifs 10 et 11, lourds, est facilitée.The tool holder head 21 thus makes it possible to arrange the rotary tools 10 and 11 so that they can be easily mounted/dismounted in the processing unit 7. Their parallel arrangement according to a predetermined spacing in the transport carriage 20 allows their transfer without additional handling of the rotary tools 10 and 11 already pre-positioned at the level of the bearings of the transformation group 7. The risks of collision between the rotary tools 10 and 11 are thus reduced, but also between the rotary tools 10 and 11 and the transformation group 7. the positioning of the rotary tools 10 and 11 is also facilitated in the axis of the bearings of the transformation group 7. In addition, the number of operations is reduced and the handling of the rotary tools 10 and 11, heavy , is facilitated.

Pour l'accostage de la tête porte-outil 21 au groupe de transformation 7, la tête porte-outil 21 peut comporter une interface frontale de maintien, destinée à coopérer avec la tourelle 16 du groupe de transformation 7, pour fixer la tête porte-outil 21 à la tourelle 16. La fixation du chariot de transport 20 au groupe de transformation 7 permet que ce soit le groupe de transformation 7 qui référence le positionnement précis du mandrin 12 ou de l'outil.For the docking of the tool holder head 21 to the transformation unit 7, the tool holder head 21 may comprise a front holding interface, intended to cooperate with the turret 16 of the transformation unit 7, to fix the tool 21 to the turret 16. The fixing of the transport carriage 20 to the transformation unit 7 allows it to be the transformation unit 7 which references the precise positioning of the chuck 12 or of the tool.

Selon un exemple de réalisation représenté sur les Figs. 3 à 11, l'interface frontale de maintien est configurée pour suspendre la tête porte-outil 21 à la tourelle 16 du groupe de transformation 7. La fixation de la tête porte-outil 21 par suspension à la tourelle 16 est facile à réaliser et peut en outre être entièrement rendue automatique, notamment grâce à l'utilisation d'un dispositif élévateur du chariot de transport 20, configuré pour monter (Figs. 3 et 4) ou descendre (Fig. 5) la tête porte-outil 21 par rapport au pied 24.According to an exemplary embodiment represented on the Figs. 3 to 11 , the front holding interface is configured to suspend the tool holder head 21 from the turret 16 of the transformation unit 7. The attachment of the tool holder head 21 by suspension to the turret 16 is easy to perform and can moreover be made fully automatic, in particular through the use of a lifting device of the transport trolley 20, configured to mount ( Figs. 3 and 4 ) or down ( Fig. 5 ) the tool head 21 relative to the foot 24.

Selon un exemple de réalisation, le dispositif élévateur comporte un actionneur, tel qu'un vérin hydraulique 31 actionnable par un levier 32. Le dispositif élévateur peut également comporter deux rails de guidage 33, agencés verticalement dans le tronc 23 de la base mobile 22, de part et d'autre de la tête porte-outil 21, pour guider le déplacement vertical de la tête porte-outil 21 le long du tronc 23.According to an exemplary embodiment, the lifting device comprises an actuator, such as a hydraulic cylinder 31 operable by a lever 32. The lifting device may also comprise two guide rails 33, arranged vertically in the trunk 23 of the mobile base 22, on either side of the tool holder head 21, to guide the vertical movement of the tool holder head 21 along the trunk 23.

Le dispositif élévateur permet ainsi de lever et descendre des charges importantes telles que les éléments d'outils rotatifs 10 et 11 pour suspendre la tête porte-outil 21 sur la tourelle 16 du groupe de transformation 7 mais permet aussi de rendre la manutention du chariot de transport 20 en usine plus sûre en abaissant le centre de gravité de la charge. En effet, l'abaissement des charges lors du convoyage des outils rotatifs 10 et 11 dans l'usine permet d'éviter que le chariot de transport 20 ne soit déséquilibré par les outils rotatifs 10 et 11 en porte-à-faux.The lifting device thus makes it possible to lift and lower heavy loads such as the rotary tool elements 10 and 11 to suspend the tool holder head 21 on the turret 16 of the transformation unit 7 but also makes it possible to make the handling of the carriage 20 transport to the factory safer by lowering the center of gravity of the load. Indeed, the lowering of the loads during the conveying of the rotary tools 10 and 11 in the factory makes it possible to prevent the transport carriage 20 from being unbalanced by the rotary tools 10 and 11 cantilevered.

Pour suspendre la tête porte-outil 21 sur la tourelle 16 du groupe de transformation 7, l'interface frontale de maintien comporte par exemple au moins un premier organe d'accroché destiné à coopérer avec au moins un premier organe d'accroché complémentaire de la tourelle 16.To suspend the tool holder head 21 on the turret 16 of the transformation unit 7, the front holding interface comprises, for example, at least one first hooking member intended to cooperate with at least one first complementary hooking member of the turret 16.

Plus précisément, les premiers organes d'accroché comportent par exemple au moins un premier crochet 34 apte à coopérer avec un premier galet 35 monté libre en rotation de la tourelle 16. Les galets 35 permettent de faciliter le montage et le démontage de la tête porte-outil 21 sur la tourelle 16, en limitant les risques de coincements.More specifically, the first attachment members comprise for example at least a first hook 34 capable of cooperating with a first roller 35 mounted free in rotation of the turret 16. The rollers 35 make it possible to facilitate the assembly and disassembly of the head -tool 21 on turret 16, limiting the risk of jamming.

Les premiers crochets 34 sont portés par la tête porte-outil 21 et les galets 35 par la tourelle 16, ou inversement. Comme mieux visible sur les Figs. 6 et 7, la tête porte-outil 21 comporte par exemple quatre premiers crochets 34. Les premiers crochets 34 s'inscrivent dans un rectangle formé autour des ports supérieur et inférieur 29 et 30 de la tête porte-outil 21. Les galets 35 font saillie longitudinalement.The first hooks 34 are carried by the tool holder head 21 and the rollers 35 by the turret 16, or vice versa. As best seen on Figs. 6 and 7 , the tool holder head 21 comprises for example four first hooks 34. The first hooks 34 are part of a rectangle formed around the upper and lower ports 29 and 30 of the tool holder head 21. The rollers 35 protrude longitudinally.

Les premiers organes d'accroché permettent le guidage et la fixation de la tête porte-outil 21 au groupe de transformation 7, notamment en évitant les mouvements de la tête porte-outil 21 dans la direction transversale, dans l'axe de rotation des outils rotatifs 10 et 11.The first attachment members allow the tool holder head 21 to be guided and fixed to the transformation unit 7, in particular by avoiding movements of the tool holder head 21 in the transverse direction, in the axis of rotation of the tools. wheels 10 and 11.

L'interface frontale de maintien peut également comporter au moins un premier épaulement 36, destinée à coopérer avec une cale de soutien 37 fixée à la tourelle 16 pour porter la tête porte-outil 21 (Figs. 6 et 7).The front holding interface may also comprise at least a first shoulder 36, intended to cooperate with a support block 37 fixed to the turret 16 to carry the tool holder head 21 ( Figs. 6 and 7 ).

L'interface frontale de maintien comporte par exemple deux premiers épaulements 36. Le premier épaulement 36 est par exemple formé dans un décrochement. Chaque premier épaulement 36 est par exemple agencé entre deux premiers crochets 34. Chaque premier épaulement 36 et deux premiers crochets 34 des premiers organes d'accroché sont par exemple alignés verticalement et peuvent être réalisés dans la tranche d'une même plaque de la tête porte-outil 21, par exemple par découpe.The front holding interface comprises for example two first shoulders 36. The first shoulder 36 is for example formed in a recess. Each first shoulder 36 is for example arranged between two first hooks 34. Each first shoulder 36 and two first hooks 34 of the first attachment members are for example aligned vertically and can be made in the edge of the same plate of the door head -tool 21, for example by cutting.

Lorsque la tête porte-outil 21 est portée par les cales de soutien 37 de la tourelle 16, les premiers crochets 34 sont sensiblement disposés au-dessus des premiers galets 35. Cela permet que la tête porte-outil 21 ne repose pas sur les premiers galets 35 mais que l'essentiel du poids des outils rotatifs 10 et 11 soit repris par les cales de soutien 37 de la tourelle 16. Les cales de soutien 37 permettent ainsi de soulager les premiers galets 35 du poids des outils rotatifs 10 et 11 sensiblement plus fragiles. Les cales de soutien 37, fixées à la tourelle 16, forment la référence verticale.When the tool holder head 21 is carried by the support wedges 37 of the turret 16, the first hooks 34 are substantially arranged above the first rollers 35. This allows the tool holder head 21 not to rest on the first rollers 35 but that most of the weight of the rotary tools 10 and 11 is taken up by the support wedges 37 of the turret 16. The support wedges 37 thus make it possible to relieve the first rollers 35 of the weight of the rotary tools 10 and 11 substantially more fragile. The support wedges 37, fixed to the turret 16, form the vertical reference.

En outre, l'interface frontale de maintien peut comporter au moins une lumière de guidage 38 destinée à coopérer avec un pion de guidage 39 complémentaire porté par la tourelle 16. Deux lumières de guidage 38 peuvent être par exemple prévues, alignés verticalement avec les premiers organes d'accroche, entre ces derniers, et de part et d'autre des ports supérieur et inférieur 29 et 30.In addition, the front holding interface may comprise at least one guide slot 38 intended to cooperate with a complementary guide pin 39 carried by the turret 16. Two guide slots 38 may for example be provided, aligned vertically with the first attachment members, between the latter, and on either side of the upper and lower ports 29 and 30.

La lumière de guidage 38 présente une forme en L d'épaisseur plus fine que les ouvertures des premiers crochets 34 des premiers organes de guidage et que les décrochements des premiers épaulements 36, de manière à guider l'accostage de la tête porte-outil 21 sur la tourelle 16. Le pion de guidage 39 plus robuste que les galets 35 permet ainsi le guidage de la tête porte-outil 21 dans la direction dans l'axe de rotation des outils rotatifs 10 et 11 puis, verticalement, en suivant la trajectoire en forme de L des lumières de guidage 38, en évitant d'éventuelles collisions entre les crochets de la tête porte-outil et les galets 35 de la tourelle 16.The guide slot 38 has an L-shape of thinner thickness than the openings of the first hooks 34 of the first guide members and than the recesses of the first shoulders 36, so as to guide the docking of the tool holder head 21 on the turret 16. The guide pin 39 which is more robust than the rollers 35 thus allows the guiding of the tool holder head 21 in the direction in the axis of rotation of the rotary tools 10 and 11 then, vertically, following the trajectory L-shaped guide slots 38, avoiding possible collisions between the hooks of the tool holder head and the rollers 35 of the turret 16.

La lumière de guidage 38 est par exemple agencée entre le premier épaulement 36 et un premier crochet 34 des premiers organes d'accroché. La lumière de guidage 38, le premier épaulement 36 et les premiers crochets 34 sont par exemple alignés verticalement et réalisés dans la tranche d'une même plaque de la tête porte-outil 21.The guide slot 38 is for example arranged between the first shoulder 36 and a first hook 34 of the first attachment members. The guide slot 38, the first shoulder 36 and the first hooks 34 are for example aligned vertically and made in the edge of the same plate of the tool holder head 21.

La tête porte-outil 21 peut comporter en outre un dispositif de verrouillage configuré pour prendre une position déverrouillée (Fig. 9) ou une position de verrouillage (Fig. 8) dans laquelle le dispositif de verrouillage verrouille le maintien des extrémités avant des mandrins 12 ou des outils 10 et 11 dans les ports supérieur et inférieur 29 et 30.The tool holder head 21 may further comprise a locking device configured to assume an unlocked position ( Fig. 9 ) or a locked position ( Fig. 8 ) in which the locking device locks the holding of the front ends of the chucks 12 or the tools 10 and 11 in the upper and lower ports 29 and 30.

Par exemple, le dispositif de verrouillage comporte un système articulé 40, deux pions de verrouillage 41 et un levier d'actionnement 42. Le levier d'actionnement 42 est raccordé aux pions de verrouillage 41 supérieur et inférieur, par le système articulé 40 de sorte que l'actionnement du levier 42 positionne les pions de verrouillage 41 en position déverrouillée dans laquelle les pions de verrouillage 41 sont escamotés dans les ports supérieur et inférieur 29 et 30, à l'écart des outils rotatifs 10 et 11 (Fig. 9) ou en position de verrouillage dans laquelle les pions de verrouillage 41 traversent les ports supérieur et inférieur 29 et 30 et s'insèrent dans des cavités correspondantes 43 ménagées dans les extrémités avant des outils rotatifs 10 et 11 (Fig. 10).For example, the locking device comprises an articulated system 40, two locking pins 41 and an actuating lever 42. The actuating lever 42 is connected to the upper and lower locking pins 41, by the articulated system 40 so that actuation of the lever 42 positions the locking pins 41 in the unlocked position in which the locking pins 41 are retracted into the upper and lower ports 29 and 30, away from the rotary tools 10 and 11 ( Fig. 9 ) or in the locking position in which the locking pins 41 pass through the upper and lower ports 29 and 30 and fit into corresponding cavities 43 formed in the front ends of the rotary tools 10 and 11 ( Fig. 10 ).

Plus précisément, le système articulé 40 comporte par exemple deux bras articulés à l'extrémité du levier d'actionnement 42, opposée à une extrémité raccordée à un actionneur 44, tel qu'un vérin pneumatique du dispositif de verrouillage (Fig. 11). Chaque bras est articulé de sorte que par exemple, lorsque le levier 42 est en position basse (Fig. 8), les pions de verrouillage 41 sont insérés dans les cavités 43 des outils rotatifs 10 et 11. Le pivotement du levier d'actionnement 42 vers le haut (Flèche F1), décale le bras supérieur vers le haut (Flèche F2), retirant le pion de verrouillage 41 de la cavité 43 de l'outil rotatif supérieur 10 et décale le bras inférieur vers le bas (Flèche F3), retirant le pion de verrouillage 41 de la cavité 43 de l'outil rotatif inférieur 11.More specifically, the articulated system 40 comprises for example two arms articulated at the end of the actuating lever 42, opposite to one end connected to an actuator 44, such as a pneumatic cylinder of the locking device ( Fig. 11 ). Each arm is articulated so that, for example, when the lever 42 is in the low position ( Fig. 8 ), the locking pins 41 are inserted into the cavities 43 of the tools 10 and 11. The pivoting of the actuating lever 42 upwards (Arrow F1), shifts the upper arm upwards (Arrow F2), removing the locking pin 41 from the cavity 43 of the upper rotary tool 10 and shifts the lower arm down (Arrow F3), removing the locking pin 41 from the cavity 43 of the lower rotary tool 11.

Le dispositif de verrouillage peut également comporter des capteurs de fin de course permettant d'automatiser le verrouillage et déverrouillage du maintien de l'extrémité du mandrin 12 ou de l'outil 10 et 11, et ainsi de mieux synchroniser la succession des opérations, réduisant les risques de collision.The locking device may also include end-of-travel sensors making it possible to automate the locking and unlocking of the holding of the end of the mandrel 12 or of the tool 10 and 11, and thus to better synchronize the succession of operations, reducing collision risks.

Les ports supérieur et inférieur 29 et 30 peuvent être prévus avec un dispositif élastique, tel qu'un ressort de poussée 45, respectif, destiné à venir en appui contre l'extrémité du mandrin 12 ou de l'outil, par exemple via une rondelle 46 en butée en fond d'alésage des ports 29 et 30. Le dispositif élastique est agencé de manière à pouvoir être repoussé par le mandrin 12 ou de l'outil dans le fond du logement du port supérieur ou inférieur 29 et 30 (Fig. 10). Les collisions du mandrin 12 ou de l'outil 10 et 11 sont ainsi évitées avec la tête porte-outil 21 en position déverrouillée par manipulation du mandrin 12 ou de l'outil 10 et 11 à l'extrémité arrière par la pince des moyens d'entraînement motorisés, côté opposé conducteur.The upper and lower ports 29 and 30 may be provided with an elastic device, such as a respective thrust spring 45, intended to bear against the end of the chuck 12 or of the tool, for example via a washer 46 in abutment in the bottom of the bore of the ports 29 and 30. The elastic device is arranged so as to be able to be pushed back by the mandrel 12 or the tool in the bottom of the housing of the upper or lower port 29 and 30 ( Fig. 10 ). Collisions of the chuck 12 or the tool 10 and 11 are thus avoided with the tool holder head 21 in the unlocked position by manipulation of the chuck 12 or the tool 10 and 11 at the rear end by the clamp of the means of drive, opposite driver side.

La tête porte-outil 21 peut être prévue amovible, c'est-à-dire détachable de la base mobile 22 du chariot de transport 20. Ainsi, la base mobile 22 peut être commune pour différentes têtes, telles que des têtes porte-manchons et/ou des têtes porte-outil de différents diamètres.The tool-carrying head 21 can be provided to be removable, that is to say detachable from the mobile base 22 of the transport carriage 20. Thus, the mobile base 22 can be common for different heads, such as sleeve-carrying heads and/or tool heads of different diameters.

Pour suspendre la tête porte-outil 21 sur la base mobile 22 du chariot de transport 20, la tête porte-outil comporte par exemple une interface arrière de maintien destinée à coopérer avec la base mobile 22 et comprenant au moins un second organe d'accroché destiné à coopérer avec au moins un second organe d'accroché complémentaire de la base mobile 22.To suspend the tool holder head 21 on the mobile base 22 of the transport carriage 20, the tool holder head comprises for example a rear holding interface intended to cooperate with the mobile base 22 and comprising at least one second member for hanging intended to cooperate with at least one second complementary attachment member of the mobile base 22.

Plus précisément, les seconds organes d'accroché comportent au moins un second crochet 47 apte à coopérer avec un second galet 48 monté libre en rotation de la base mobile 22. Les galets 48 permettent de faciliter le montage et le démontage de la tête porte-outil 21 sur la base mobile 22, en limitant les risques de coincements.More specifically, the second attachment members comprise at least a second hook 47 capable of cooperating with a second roller 48 mounted free in rotation of the mobile base 22. The rollers 48 make it possible to facilitate the assembly and disassembly of the carrier head tool 21 on the mobile base 22, limiting the risk of jamming.

Les seconds crochets 47 sont portés par la tête porte-outil 21 et les galets 48 par la base mobile 22, ou inversement. Comme mieux visible sur les Figs. 4 et 6, la tête porte-outil 21 comporte par exemple quatre seconds crochets 47. Les quatre seconds crochets 47 s'inscrivent dans un rectangle formé autour des ports supérieur et inférieur 29 et 30 de la tête porte-outil 21, par exemple à l'arrière des quatre premiers crochets 34 des premiers organes d'accroché. Les seconds galets 48 font saillie longitudinalement. Les seconds organes d'accroché permettent le guidage et la fixation de la tête porte-outil 21 à la base mobile 22.The second hooks 47 are carried by the tool holder head 21 and the rollers 48 by the mobile base 22, or vice versa. As best seen on Figs. 4 and 6 , the tool holder head 21 comprises for example four second hooks 47. The four second hooks 47 are part of a rectangle formed around the upper and lower ports 29 and 30 of the tool holder head 21, for example at the rear of the first four hooks 34 of the first hanging devices. The second rollers 48 protrude longitudinally. The second attachment members allow the guiding and fixing of the tool holder head 21 to the mobile base 22.

L'interface arrière de maintien peut également comporter au moins un second épaulement 49, destinée à coopérer avec une cale de soutien 50 fixée à la base mobile 22 pour porter la tête porte-outil 21 (Figs. 4 et 6).The rear holding interface may also include at least one second shoulder 49, intended to cooperate with a support block 50 fixed to the mobile base 22 to carry the tool holder head 21 ( Figs. 4 and 6 ).

L'interface arrière de maintien comporte par exemple deux seconds épaulements 49. Le second épaulement 49 est par exemple formé dans un décrochement. Chaque second épaulement 49 est par exemple agencé entre deux seconds crochets 47. Chaque second épaulement 49 et deux seconds crochets 47 des seconds organes d'accroché sont par exemple alignés verticalement et peuvent être réalisés dans la tranche d'une même plaque de la tête porte-outil 21, par exemple par découpe.The rear holding interface comprises for example two second shoulders 49. The second shoulder 49 is for example formed in a recess. Each second shoulder 49 is for example arranged between two second hooks 47. Each second shoulder 49 and two second hooks 47 of the second attachment members are for example aligned vertically and can be made in the edge of the same plate of the door head -tool 21, for example by cutting.

Lorsque la tête porte-outil 21 est portée par les cales de soutien 50 de la base mobile 22, les seconds crochets 47 sont sensiblement disposés au-dessus des seconds galets 48. Cela permet que la tête porte-outil 21 ne repose pas sur les seconds galets 48 mais que l'essentiel du poids des outils rotatifs 10 et 11 soit repris par les cales de soutien 50 de la base mobile 22. Les cales de soutien 50 permettent ainsi de soulager les seconds galets 48 du poids des outils rotatifs 10 et 11 sensiblement plus fragiles.When the tool holder head 21 is carried by the support wedges 50 of the mobile base 22, the second hooks 47 are substantially arranged above the second rollers 48. This allows the tool holder head 21 not to rest on the second rollers 48 but that most of the weight of the rotary tools 10 and 11 is taken up by the support wedges 50 of the mobile base 22. The support wedges 50 thus make it possible to relieve the second rollers 48 of the weight of the rotary tools 10 and 11 noticeably more fragile.

L'opérateur souhaite monter les outils rotatifs dans un groupe de transformation 7. Pour cela, l'opérateur muni une tête porte-outil 21 de mandrins 12 ou d'outils rotatifs 10 et 11, en insérant leurs extrémités avant dans les logements des ports supérieur et inférieur 29 et 30. Puis, le maintien des extrémités avant des mandrins 12 ou des outils est verrouillé dans les ports supérieur et inférieur 29 et 30 (Fig. 8) et la tête porte-outil 21 munis de mandrins 12 ou d'outils rotatifs 10 et 11 est suspendue sur la base mobile 22 du chariot de transport 20.The operator wishes to mount the rotary tools in a transformation unit 7. For this, the operator provided with a tool holder head 21 of chucks 12 or rotary tools 10 and 11, by inserting their front ends into the housings of the ports upper and lower 29 and 30. Then, the holding of the front ends of the chucks 12 or the tools is locked in the upper and lower ports 29 and 30 ( Fig. 8 ) and the tool holder head 21 fitted with chucks 12 or rotary tools 10 and 11 is suspended on the mobile base 22 of the transport carriage 20.

Le chariot de transport 20 transporte les outils rotatifs 10 et 11 en position basse vers le groupe de transformation 7 (Fig. 5) où il lève la tête porte-outil 21 et les outils rotatifs 10 et 11 en position haute par le dispositif élévateur (Figs. 3 et 4).The transport trolley 20 transports the rotary tools 10 and 11 in the low position to the processing unit 7 ( Fig. 5 ) where he raises the tool head 21 and the rotary tools 10 and 11 to the high position by the lifting device ( Figs. 3 and 4 ).

La tête porte-outil 21 est alors surélevée de sorte que le pion de guidage 39 s'insère dans la lumière de guidage 38, les cales de soutien 37 s'insèrent sous les premiers épaulements 36 et les premiers galets 35 s'insèrent dans les ouvertures des premiers crochets 34. Puis, l'opérateur avance sensiblement le chariot de transport 20 jusqu'à ce que le pion de guidage 39 soit au fond de la partie horizontale de la lumière de guidage 38. Le chariot de transport 20 abaisse alors sensiblement la tête porte-outil 21, de sorte que la tête porte-outil 21 soit suspendue sur les cales de maintien 50 de la tourelle 16, que le pion de guidage 39 soit reçu au fond de la partie haute de la lumière de guidage 38 et que les premiers crochets 34 soient agencés sensiblement au-dessus des premiers galets 35. La tête porte-outil 21 du chariot de transport 20, munie de mandrins 12 ou d'outils 10 et 11 est alors fixée à la tourelle 16 (Figs. 6 et 7).The tool holder head 21 is then raised so that the guide pin 39 fits into the guide slot 38, the support wedges 37 fit under the first shoulders 36 and the first rollers 35 fit into the openings of the first hooks 34. Then, the operator substantially advances the transport carriage 20 until the guide pin 39 is at the bottom of the horizontal part of the guide slot 38. The transport carriage 20 then lowers substantially the tool holder head 21, so that the tool holder head 21 is suspended on the holding wedges 50 of the turret 16, that the guide pin 39 is received at the bottom of the upper part of the guide slot 38 and that the first hooks 34 are arranged substantially above the first rollers 35. The tool holder head 21 of the transport carriage 20, provided with mandrels 12 or tools 10 and 11 is then fixed to the turret 16 ( Figs. 6 and 7 ).

Les pinces des moyens d'entrainement motorisés côté opposé conducteur, coopèrent alors avec les extrémités arrière des mandrins 12 ou des outils 10 et 11, verrouillant le maintien des extrémités arrière des mandrins ou des outils par le groupe de transformation 7.The clamps of the motorized drive means on the opposite driver side then cooperate with the rear ends of the chucks 12 or the tools 10 and 11, locking the holding of the rear ends of the chucks or tools by the transformation unit 7.

Le maintien des extrémités avant des outils est alors déverrouillé par le chariot de transport 20. Le dispositif élastique autorise alors le déplacement sensible du mandrin 12 ou de l'outil par la pince dans les ports supérieur ou inférieur 29 et 30 en évitant les collisions (Fig. 9). Le dispositif élastique garanti le contact au fond de la pince.The holding of the front ends of the tools is then unlocked by the transport carriage 20. The elastic device then allows the substantial movement of the mandrel 12 or of the tool by the clamp in the upper or lower ports 29 and 30, avoiding collisions ( Fig. 9 ). The elastic device guarantees contact at the bottom of the pliers.

Pour démonter les outils du groupe de transformation 7, l'opérateur commence par fixer la tête porte-outil 21 du chariot de transport 20 démunie d'outil à la tourelle 16. Puis l'opérateur déverrouille.To dismantle the tools of the transformation unit 7, the operator begins by fixing the tool holder head 21 of the transport carriage 20 without tools to the turret 16. Then the operator unlocks.

Puis, les extrémités avant des mandrins 12 ou des outils 10 et 11 sont engagées dans les ports supérieur et inférieur 29 et 30 de la tête porte-outil 21 fixée à la tourelle 16. Puis, l'opérateur verrouille le maintien des extrémités avant des mandrins 12 ou de outils 10 et 11 par le chariot de transport 20 et l'opérateur déverrouille le maintien des extrémités arrière des mandrins 12 ou des outils 10 et 11 par le groupe de transformation 7 (Fig. 8).Then, the front ends of the chucks 12 or of the tools 10 and 11 are engaged in the upper and lower ports 29 and 30 of the tool holder head 21 fixed to the turret 16. Then, the operator locks the holding of the front ends of the chucks 12 or tools 10 and 11 by the transport carriage 20 and the operator unlocks the holding of the rear ends of the chucks 12 or tools 10 and 11 by the transformation unit 7 ( Fig. 8 ).

La manipulation des outils rotatifs 10 et 11 vers ou à l'écart des groupes de transformation 7 est facilitée, ceux-ci pouvant être changés rapidement, de façon reproductible et de manière simple.The manipulation of the rotary tools 10 and 11 towards or away from the transformation units 7 is facilitated, these being able to be changed quickly, in a reproducible manner and in a simple manner.

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

Claims (14)

  1. A tool-holder head for a rotary tool transport carriage for a transformation unit (7) for a flat substrate, said carriage comprising a movable base, said tool-holder head comprising an upper port (29) and a lower port (30), arranged on top of one another, and intended to receive respectively a front end of an upper rotary tool (10) and a front end of a lower rotary tool (11), these ports (29, 30) enable the rotary tools (10, 11) to extend parallel and to remain spaced apart by a predetermined gap,
    characterised in that it comprises a front holding interface intended to engage with a turret (16) of the transformation unit (7), the front holding interface comprises at least one first fastening member intended to engage with at least one first complementary fastening member of the turret (16) to suspend the tool-holder head (21) on the turret (16) of the transformation unit (7), and to fix the tool-holder head (21) to the turret (16),
    the tool-holder head further comprising a rear holding interface intended to engage with the movable base (22) of the transport carriage (20), to fix the tool-holder head (21) to the movable base (22).
  2. Tool-holder head according to claim 1, wherein the ports (29, 30) are positioned cantilevered with respect to the movable base (22), so as to be able to make the rotary tool (10, 11) penetrate inside the transformation unit (7).
  3. Head according to claim 1, wherein the first fastening members comprising at least one first hook (34) capable of engaging with a first roller (35) mounted free in rotation.
  4. Head according to the claims, wherein the front holding interface comprises at least one first shoulder (36) intended to engage with a chock for supporting (37) the turret (16) to carry the tool-holder head (21), such that when the tool-holder head (21) is carried by the support chock (37), the first hooks (34) are substantially arranged above the first rollers (35).
  5. Head according to claim 3 or 4, wherein the front holding interface comprises at least one guiding space (38) intended to engage with a complementary guiding pin (39) carried by the turret (16), the guiding space (38) having an L-shape of thickness thinner than the openings of the first hooks (34).
  6. Head according to claim 1, wherein the rear holding interface is configured to suspend the tool-holder head (21) to the movable base (22).
  7. Head according to claim 1, wherein the rear holding interface comprises at least one second fastening member intended to engage with at least one second complementary fastening member of the turret (16), the second fastening members comprising at least one second hook (47) capable of engaging with a second roller (48) mounted free in rotation.
  8. Head according to claim 7, wherein the rear holding interface comprises at least one second shoulder (49) intended to engage with a support chock (50) of the movable base (22) to carry the tool-holder head (21), such that when the tool-holder head (21) is carried by the support chock (50), the second hooks (47) are substantially arranged above the second rollers (48).
  9. Head according to one of the preceding claims, comprising a locking device configured to take an unlocked position or a locking position wherein the locking device locks the holding of an end of the tool in the port (29, 30).
  10. Head according to claim 9, wherein the locking device comprises an articulated system (40), an upper locking pin (41), a lower locking pin (41) and an actuating lever (42) connected to the upper and lower locking pins (41) by the articulated system (40), such that the actuation of the lever (42) positions the locking pins (41) in the unlocked or locking position.
  11. Head according to one of the preceding claims, wherein the port (29, 30) comprises a respective elastic device, intended to bear against the end of the tool and which could be repelled by it to the bottom of the housing of the port (29, 30).
  12. Transport carriage comprising a foot equipped with rolling elements, comprising a tool-holder head (21) according to one of the preceding claims, and a lifting device configured to mount or descent the tool-holder head (21) with respect to the foot (24).
  13. Method for mounting a tool in a transformation unit (7), by means of a transport carriage according to claim 12, comprising the following steps consisting of:
    - making the transport carriage (20) enter in the transformation unit (7),
    - fixing the tool-holder head (21) of the transport carriage (20), equipped with a tool (10, 11) to a turret (16) of the transformation unit (7),
    - locking a rear end of the tool (10, 11),
    - unlocking a front end of the tool (10, 11) from the port (29, 30) of the tool-holder head (21),
    - uncoupling the tool-holder head (21) from the turret (16),
    - making the transport carriage (20) exit from the transformation unit (7), and
    - engaging the front bearings on the ends of the tool (10, 11).
  14. Method for removing a tool in a transformation unit (7), by means of a transport carriage according to claim 13, comprising the following steps consisting of:
    - making the transport carriage (20) enter in the transformation unit (7),
    - fixing the tool-holder head (21) of the transport carriage (20), de-equipped of a tool to a turret (16) of the transformation unit (7),
    - locking a front end of the tool (10, 11) to the port (29, 30) of the tool-holder head (21),
    - unlocking a rear end of the tool (10, 11),
    - uncoupling the tool-holder head (21) from the turret (16), and
    - making the transport carriage (20) equipped with the tool (10, 11) exit from the transformation unit (7).
EP15808109.1A 2014-12-04 2015-11-26 Tool-holder head, transport carriage and method for mounting and removing a tool for a unit for modifying a flat material Active EP3227101B1 (en)

Applications Claiming Priority (2)

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EP14020102 2014-12-04
PCT/EP2015/025090 WO2016087050A1 (en) 2014-12-04 2015-11-26 Tool-holder head, transport carriage and method for mounting and removing a tool for a unit for modifying a flat material

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EP3227101B1 true EP3227101B1 (en) 2022-09-21

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US (1) US10696003B2 (en)
EP (1) EP3227101B1 (en)
JP (1) JP6421244B2 (en)
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KR102551427B1 (en) 2023-07-04
CN107107524B (en) 2019-05-28
ES2928976T3 (en) 2022-11-23
US20180290417A1 (en) 2018-10-11
EP3227101A1 (en) 2017-10-11
JP6421244B2 (en) 2018-11-07
US10696003B2 (en) 2020-06-30
KR20170086085A (en) 2017-07-25
CN107107524A (en) 2017-08-29
WO2016087050A1 (en) 2016-06-09

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