EP3227042A1 - Rotary tool chuck, unit for modifying a flat material, and operating method - Google Patents

Rotary tool chuck, unit for modifying a flat material, and operating method

Info

Publication number
EP3227042A1
EP3227042A1 EP15801685.7A EP15801685A EP3227042A1 EP 3227042 A1 EP3227042 A1 EP 3227042A1 EP 15801685 A EP15801685 A EP 15801685A EP 3227042 A1 EP3227042 A1 EP 3227042A1
Authority
EP
European Patent Office
Prior art keywords
mandrel
circuit
sleeve
cooling
pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP15801685.7A
Other languages
German (de)
French (fr)
Other versions
EP3227042B1 (en
Inventor
Philippe Clément
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 EP3227042A1 publication Critical patent/EP3227042A1/en
Application granted granted Critical
Publication of EP3227042B1 publication Critical patent/EP3227042B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • B31B50/741—Moistening; Drying; Cooling; Heating; Sterilizing
    • 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
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/08—Creasing
    • B31F1/10—Creasing by rotary tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/22—Means for cooling or heating forme or impression cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2100/00—Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs
    • B31B2100/002—Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs characterised by the shape of the blank from which they are formed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • 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
    • B31F2201/0723—Characteristics of the rollers
    • B31F2201/073—Rollers having a multilayered structure

Definitions

  • the present invention relates to a rotary tool mandrel for a group of transformation of a plane support.
  • the invention relates to a transformation unit comprising at least one rotary tool mandrel.
  • the invention also relates to a method of operating a transformation group of a plane support.
  • a support processing machine is intended for the manufacture of packaging.
  • an initial planar support such as a continuous strip of cardboard, is unwound and printed by a printing station comprising one or more printing units.
  • the planar support is then transferred to an introductory group and then to an embossing group, possibly followed by a push-up group.
  • the flat support is then cut in a cutting group. After ejection of the waste zones, the obtained poses are cut to obtain individualized boxes.
  • the rotary groups of transformation, embossing, crushing, cutting, ejection of waste, or printer comprise respectively an upper cylindrical tool for processing, and a lower cylindrical tool for transformation, between which the plane support circulates to be transformed.
  • the rotary transformation tools rotate at the same speed, but in opposite directions from each other.
  • the plane support passes into the gap between the rotary tools, which shape an embossed relief, shape a raised relief, cut the plane support into poses in a rotary cut, eject the waste, or print a pattern during the process. impression.
  • Cylinder change operations are long and tedious.
  • the operator mechanically disconnects the cylinder to remove it from its drive mechanism. Then the operator pulls the cylinder outside the processing machine, and puts the new cylinder back into the processing machine by reconnecting it to its drive.
  • the weight of a cylinder is important, of the order of 50 kg to 2 ⁇ 00 kg. To pull it out, the operator raises it with a hoist.
  • some processing groups provide for the use of rotary tools consisting of a mandrel and a removable sleeve carrying shape ensuring the transformation, insertable on the mandrel. Then simply 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 passage of the planar support in the successive transformation groups tends to heat the plane support, especially during its passage in the printer groups.
  • the plane support heated, and in turn heats the rotary tools, because the latter, usually metallic, are very good thermal conductors.
  • the dimensions of a sleeve are therefore generally provided to limit the clearance between the sleeve and the mandrel during processing operations. A difficulty that results is that at the end of the transformation group, the sleeve which has a higher thermal conductivity than that of the mandrel, cools faster than the latter. The sleeve is then difficult to remove from the mandrel.
  • An object of the present invention is to provide a mandrel, a rotary tool, a group of transformation of a plane support, and a method of operation which at least partially solve the disadvantages of the state of the art.
  • the present invention relates to a rotary tool mandrel for a group of transformation of a plane support, on which a sleeve is intended to be inserted.
  • the rotary tool chuck comprises:
  • peripheral wall which is able to assume a rest position and which is able to assume a locking position by exerting a radial pressure on the sleeve to lock the sleeve in position on the rotary tool mandrel, and
  • a fluidic pressure circuit which is formed between the peripheral wall and the cylindrical core, to exert the radial pressure on the sleeve.
  • the rotary tool mandrel is characterized in that it comprises a fluidic cooling circuit, to allow circulation of a fluid at the cylindrical core, and to cool the tool mandrel rotary.
  • the present invention also relates to a rotary tool mandrel for a group of transformation of a plane support, on which a sleeve is intended to be inserted.
  • the rotary tool chuck comprises:
  • a fluidic cooling circuit to allow a circulation of a fluid at the cylindrical core, and to cool the rotary tool mandrel.
  • the rotary tool mandrel is characterized in that it comprises:
  • peripheral wall which is able to assume a rest position and which is able to assume a locking position by exerting a radial pressure on the sleeve to lock the sleeve in position on the rotary tool mandrel, and
  • a fluidic pressure circuit which is formed between the peripheral wall and the cylindrical core, to exert the radial pressure on the sleeve.
  • the fluidic pressure circuit for the tool is used for securing the sleeve to the mandrel and thus to form the complete tool.
  • the fluidic cooling circuit is used to circulate and cool a fluid to cool the mandrel. This fluidic cooling circuit for the tool makes it possible to rapidly cool the mandrel and the sleeve while the transformation unit is being stopped, making it easier to extract the sleeve.
  • the fluidic cooling circuit makes it possible to standardize the temperature of the mandrel and sleeve assembly.
  • the pressure circuit and the cooling circuit are connected together, thus forming a single circuit with a single fluid.
  • a connection port of the cooling circuit is arranged at a front end of the mandrel and a connection port of the pressure circuit is arranged at a rear end of the mandrel.
  • the connection ports are for example aligned on an axis of rotation of the mandrel.
  • connection ports comprise a respective connecting element of the mandrel, intended to cooperate with a complementary coupling element of the transformation unit for connecting the fluidic pressure circuit to the fluidic cooling circuit.
  • the connecting elements and the complementary coupling elements are of the quick-connect type, taking a closed position when they are disconnected, and an opening position allowing the passage of a fluid when connected. This automatically closes the pressure circuit when the additional coupling elements are disconnected.
  • the pressure circuit has a tube-shaped portion, coaxial with the axis of rotation of the mandrel, around the cylindrical core.
  • the pressure circuit has at least one axial duct portion formed in each mandrel spigot, the axial duct portion connecting a connection port.
  • the pressure circuit comprises at least one duct portion connecting each axial duct portion to the tube-shaped portion.
  • the subject of the invention is also a group for transforming a flat support such as a crushing, embossing, rotary cutting, waste ejection or printing unit comprising at least one mandrel as described and claimed below.
  • the cooling circuit for connection to a cooling module configured to cool the fluid.
  • the cooling circuit is connected to the pressure circuit and forms, for example, a closed circuit.
  • the invention further relates to a method of operating a transformation group, as described and claimed below.
  • the method comprises the steps of:
  • the circulation of the fluid in the pressure circuit for cooling the mandrel is for example carried out in a closed circuit.
  • the connection port of the pressure circuit connected to the cooling circuit for securing the sleeve to the mandrel for example is the connection port arranged at the rear of the mandrel, opposite side conductor.
  • control of the joining of the sleeve to the mandrel or the control of the cooling of the mandrel can be easily controlled and automated by the controls for connecting or disconnecting the pressure circuit to the cooling circuit.
  • FIG. 1 is a general view of an exemplary transformation line of a plane support
  • FIG. 2 shows a perspective view of an upper rotary tool and a lower rotary tool
  • FIG. 3 shows a perspective view of a mandrel
  • FIG. 4 shows a view of a pressure circuit connected to a cooling circuit forming a closed circuit
  • FIG. 5 shows a partial vertical sectional view of a transformation unit in which are mounted two rotary tools respectively comprising a mandrel and a sleeve secured to the mandrel.
  • the longitudinal, vertical and transverse directions indicated in 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 relative to the transverse direction T, as being respectively the driver's side and the opposite driver's side.
  • a processing line of a flat support such as flat cardboard or roll-fed continuous strip paper, allows different operations to be performed and to obtain packaging such as folding boxes.
  • the transformation line comprises, disposed one after the other in the order of movement of the planar support, an unwinding station 1, several printing units 2, one or more series embossing groups followed by one or more series crushing units 3, followed by a rotating cutting unit 4 or platen cutter, and a receiving station 5 made objects.
  • the transformation unit 7 comprises an upper rotary tool 10 and a lower rotary tool 11, which modify the plane support by printing, embossing, crushing, cutting, ejection of waste, etc., in order to obtain a package.
  • the rotary tools 10 and 11, are mounted parallel to each other in the transformation group 7, one above the other, and extend in the transverse direction T, which is also the direction of the axes of rotation A1 and A2 of the rotary tools 10 and 11 (see Fig. 2).
  • the rear ends of the rotary tools 10 and 11, the opposite conductor side are rotated by motorized drive means. In operation, the rotary tools 10 and 11 rotate in opposite directions around each of the axes of rotation A1 and A2 (arrows Fs and Fi).
  • the plane support passes into the gap between the rotary tools 10 and 11, to be embossed, and / or discharged, and / or cut, and / or printed.
  • At least one of the two rotary tools, the upper rotary tool 10 or the lower rotary tool 11, comprises a mandrel 12 and a removable sleeve 13, insertable on the mandrel 12 in the transverse direction T (FIG 2, arrow G). .
  • a mandrel 12 and a removable sleeve 13, insertable on the mandrel 12 in the transverse direction T (FIG 2, arrow G).
  • 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 mandrel 12 in combination with several sleeves 13, rather than to provide the acquisition of several rotary tools 10 and 11 complete.
  • the sleeve 13 has a generally cylindrical shape. It is for example made of aluminum material.
  • the mandrel 12 comprises a cylindrical core 14, a front spigot 15, a rear spigot 16 on either side of the cylindrical core 14, forming a rotating shaft of the rotary tool, and a peripheral wall 17 surrounding the cylindrical core 14.
  • the front and rear trunnions 15 and 16 have a generally cylindrical shape. They are respectively held by front and rear bearings 18, 19 of the transformation unit 7.
  • the rear journals 16 of the rotary tools 10 and 11, opposite the conductive side are rotated by a motorized drive system 20.
  • the elements of the mandrel 12, that is to say the cylindrical core 14, the front and rear trunnions 15 and 16 and the peripheral envelope 17, are made of metallic material, such as steel.
  • the cylindrical peripheral wall 17 can take a rest position and a locking position in which the peripheral wall 17 exerts a radial pressure on the sleeve 13 to lock it in position on the mandrel 12, for example by radial deformation of the peripheral wall 17.
  • the mandrel 12 also comprises a fluid pressure circuit 21 formed in part between the peripheral wall 17 and the cylindrical core 14 (FIGS. 5), for controlling the exercise of the radial pressure by the peripheral wall 17.
  • the pressure circuit 21 is intended to receive a fluid for pressing the peripheral wall 17 against the inner envelope surface of the sleeve 13 to hold the sleeve 13 to the mandrel 12.
  • the sleeve 13 thus held firmly to the mandrel 12 can be rotated about the axis of rotation A1 and A2.
  • the fluid is for example oil.
  • the pressure circuit 21 comprises a connection port 22 to a cooling fluid circuit 24 of the transformation unit 7, to allow a circulation of a fluid in the pressure circuit 21 for cooling the mandrel 12.
  • a connection port 22 is arranged at a front end of the mandrel 12.
  • the pressure circuit 21 comprises another connection port 23 arranged at a rear end of the mandrel 12. The pressure circuit 21 can thus lead to the mandrel 12 by a port of the connection port 22 formed in the front trunnion 15 and by a port of the connection port 23 formed in the rear trunnion 16.
  • connection ports 22 and 23 are for example aligned on the axis of rotation A1 or A2 of the mandrel 12, arranged at the respective ends of the front and rear trunnions 15 and 16.
  • the pressure circuit 21 has an axial symmetry.
  • the pressure circuit 21 has a tube-shaped portion 21a, two axial duct portions 21b and two radial duct portions 21c ( Figure 5).
  • the axial and radial duct portions 21b, 21c are linear.
  • the tube-shaped portion 21a is coaxial with the axis of rotation A1 or A2 of the mandrel 12. It is formed around the cylindrical core 14.
  • the peripheral wall 17 is, for example, hooped and then welded to the cylindrical core 14 leaving an interstice a few millimeters forming the tube-shaped portion 21a of the pressure circuit 21.
  • the axial duct portions 21b are aligned on the axis of rotation A1 and A2 of the mandrel 12, and are formed in a respective pin 15 and 16. Each portion of axial duct 21b connects a connection port 22 and 23 to a radial duct portion 21c forming a right angle. Each radial duct portion 21c extends radially to connect an axial duct portion 21b in two diametrically opposite locations of one end of the tube-shaped portion 21a.
  • This embodiment of the pressure circuit 21 is simple to perform and keeps the sleeve 13 uniformly over its entire inner envelope surface.
  • the pressure circuit 21 is intended to be connected to the cooling circuit
  • Processing Group 7 also comprises a cooling module 25 configured to cool the fluid flowing in the cooling circuit 24.
  • the cooling module 25 comprises for example a pump for circulating the fluid in the cooling circuit 24 and a heat exchanger able to cool the fluid flowing in the cooling circuit 24.
  • connection ports 22 and 23 comprise a respective connecting element 26 of the mandrel 12 intended to cooperate with a complementary connecting element 27 of the transformation unit 7 to connect the pressure circuit 21 to the cooling circuit 24.
  • the connecting elements 26 are, for example, distinct elements mounted tightly in an orifice of the respective connection port 22 and 23 of the pressure circuit 21.
  • the connecting elements 26 and the complementary connecting elements 27 are for example of the type quick couplings.
  • the ends of the connecting elements 26 and 27 cooperating together are for example of the male-female type.
  • the quick couplings are further configured to assume a closed position when disconnected from each other and an open position permitting the passage of fluid when connected together. This automatically closes the pressure circuit 21 when disconnected, necessary for the exercise of the radial pressure by the peripheral wall 17 to secure the sleeve 13 to the mandrel 12.
  • one of the two connection ports 22 and 23 of the pressure circuit 21, such as the connection port 23 arranged at the rear of the mandrel 12 is only connected.
  • the connecting element 26 of the connection port 22 arranged at the front of the mandrel 12 is then in the closed position, closing the pressure circuit 21 (FIG 5).
  • a fluid is sent into the pressure circuit 21.
  • the cooling circuit 24 is isolated from the cooling module 25.
  • the pressure exerted by the fluid in the pressure circuit 21 then pushes the peripheral wall 17 radially, in the blocking position, pressing it against the inner envelope surface of the sleeve 13 , which fixes the sleeve 13 firmly to the mandrel 12.
  • At least one of the two connecting elements 26 of the mandrel 12 remains connected to the complementary connecting element 27 of the transformation unit 7.
  • the sleeve 13 thus firmly held to the mandrel 12 can be rotated by the mandrel 12 to produce the plane support transformation operations.
  • the pressure of the fluid is decreased to separate the sleeve 13 to the mandrel 12.
  • connection elements 26 then connected to the complementary coupling elements 27, allow the circulation of the fluid through the cooling circuit 24 , forming a closed circuit, to be cooled by the cooling module 25, and cool the mandrel 12.
  • the mandrel 12 and the sleeve 13 can then be cooled. When sufficiently cooled, and the peripheral wall 17 is in the rest position, the sleeve 13 can be easily removed.
  • the pressure circuit 21 used for the joining of the sleeve 13 to the mandrel 12 is thus also used for cooling the mandrel 12 to stop the transformation unit 7.
  • This second use of the pressure circuit 21 accelerates the cooling of the mandrel 12 to release more easily and quickly the sleeve 13.
  • the control of the connection of the sleeve 13 to the mandrel 12 or the cooling of the mandrel 12, can be easily controlled and automated by the controls of the connection or disconnection of the circuit pressure 21.
  • 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Drilling And Boring (AREA)
  • Auxiliary Devices For Machine Tools (AREA)

Abstract

A rotary tool chuck for a unit for modifying a flat material, on which a sleeve (13) is intended to be fitted, comprises a cylindrical core (14), a peripheral wall (17), which is able to take up a rest position and a locking position exerting a radial pressure on the sleeve (13) so as to lock it in position on the chuck (12), a pressure fluid circuit (21), provided between the peripheral wall (17) and the cylindrical core (14), for exerting the radial pressure on the sleeve (13), and a cooling fluid circuit (24) for allowing circulation of a fluid at the cylindrical core (14) and for cooling the chuck (12).

Description

MANDRIN D'OUTIL ROTATIF. GROUPE DE TRANSFORMATION D'UN SUPPORT PLAN. ET PROCEDE DE FONCTIONNEMENT  ROTARY TOOL CHUCK. TRANSFORMATION GROUP OF A PLAN SUPPORT. AND METHOD OF OPERATION
La présente invention concerne un mandrin d'outil rotatif pour un groupe de transformation d'un support plan. L'invention se rapporte à un groupe de transformation comportant au moins un mandrin d'outil rotatif. L'invention concerne également un procédé de fonctionnement d'un groupe de transformation d'un support plan. The present invention relates to a rotary tool mandrel for a group of transformation of a plane support. The invention relates to a transformation unit comprising at least one rotary tool mandrel. The invention also relates to a method of operating a transformation group of 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 processing machine is intended for the manufacture of packaging. In this machine, an initial planar support, such as a continuous strip of cardboard, is unwound and printed by a printing station comprising one or more printing units. The planar support is then transferred to an introductory group and then to an embossing group, possibly followed by a push-up group. The flat support is then cut in a cutting group. After ejection of the waste zones, the obtained poses are cut 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 groups of transformation, embossing, crushing, cutting, ejection of waste, or printer comprise respectively an upper cylindrical tool for processing, and a lower cylindrical tool for transformation, between which the plane support circulates to be transformed. In operation, the rotary transformation tools rotate at the same speed, but in opposite directions from each other. The plane support passes into the gap between the rotary tools, which shape an embossed relief, shape a raised relief, cut the plane support into poses in a rotary cut, eject the waste, or print a pattern during the process. 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 2Ό00 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 pulls the cylinder outside the processing machine, and puts the new cylinder back into the processing machine by reconnecting it to its drive. The weight of a cylinder is important, of the order of 50 kg to 2Ό00 kg. To pull it out, the operator raises it with 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. Because of its rather high weight, a cylinder change is not very quick to perform. In addition, many tool changes may be required to obtain many different boxes from each other. These tools must be ordered well in advance, which becomes incompatible with the changes in production currently required. In addition, tools are relatively expensive to make, and they only become profitable with extremely high production.
Ainsi certains groupes de transformation prévoient l'utilisation d'outils rotatifs composés d'un mandrin et d'un manchon amovible porteur de forme assurant la transformation, insérable sur le mandrin. Il suffit alors de changer le manchon, plutôt que la totalité de l'outil rotatif. Ceci facilite le changement d'outil du fait du faible poids du manchon et diminue les coûts, car le manchon est moins onéreux.  Thus, some processing groups provide for the use of rotary tools consisting of a mandrel and a removable sleeve carrying shape ensuring the transformation, insertable on the mandrel. Then simply 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.
Le passage du support plan dans les groupes de transformation successifs tend à chauffer le support plan, notamment lors de son passage dans les groupes imprimeurs. Le support plan chauffé, et chauffe à son tour les outils rotatifs, car ces derniers, généralement métalliques sont de très bons conducteurs thermiques. Les dimensions d'un manchon sont donc généralement prévues pour limiter le jeu entre le manchon et le mandrin lors des opérations de transformation. Une difficulté qui en résulte est qu'à l'arrêt du groupe de transformation, le manchon qui présente une conductivité thermique plus importante que celle du mandrin, se refroidit plus vite que ce dernier. Le manchon est alors difficile à retirer du mandrin.  The passage of the planar support in the successive transformation groups tends to heat the plane support, especially during its passage in the printer groups. The plane support heated, and in turn heats the rotary tools, because the latter, usually metallic, are very good thermal conductors. The dimensions of a sleeve are therefore generally provided to limit the clearance between the sleeve and the mandrel during processing operations. A difficulty that results is that at the end of the transformation group, the sleeve which has a higher thermal conductivity than that of the mandrel, cools faster than the latter. The sleeve is then difficult to remove from the mandrel.
Exposé de l'invention Presentation of the invention
Un but de la présente invention est de proposer un mandrin, un outil rotatif, ι groupe de transformation d'un support plan, et un procédé de fonctionnement q résolvent au moins en partie les inconvénients de l'état de la technique.  An object of the present invention is to provide a mandrel, a rotary tool, a group of transformation of a plane support, and a method of operation which at least partially solve the disadvantages of the state of the art.
A cet effet, la présente invention a pour objet un mandrin d'outil rotatif pour un groupe de transformation d'un support plan, sur lequel un manchon est destiné à être inséré. Le mandrin d'outil rotatif comprend: For this purpose, the present invention relates to a rotary tool mandrel for a group of transformation of a plane support, on which a sleeve is intended to be inserted. The rotary tool chuck comprises:
- un noyau cylindrique,  a cylindrical core,
- une paroi périphérique, qui est apte à prendre une position de repos et qui est apte à prendre une position de blocage en exerçant une pression radiale sur le manchon pour bloquer le manchon en position sur le mandrin d'outil rotatif, et  a peripheral wall, which is able to assume a rest position and which is able to assume a locking position by exerting a radial pressure on the sleeve to lock the sleeve in position on the rotary tool mandrel, and
- un circuit fluidique de pression, qui est ménagé entre la paroi périphérique et le noyau cylindrique, pour exercer la pression radiale sur le manchon.  a fluidic pressure circuit, which is formed between the peripheral wall and the cylindrical core, to exert the radial pressure on the sleeve.
Selon un premier aspect de l'invention, le mandrin d'outil rotatif est caractérisé en ce qu'il comprend un circuit fluidique de refroidissement, pour permettre une circulation d'un fluide au niveau du noyau cylindrique, et refroidir le mandrin d'outil rotatif. La présente invention a également pour objet un mandrin d'outil rotatif pour un groupe de transformation d'un support plan, sur lequel un manchon est destiné à être inséré. Le mandrin d'outil rotatif comprend: According to a first aspect of the invention, the rotary tool mandrel is characterized in that it comprises a fluidic cooling circuit, to allow circulation of a fluid at the cylindrical core, and to cool the tool mandrel rotary. The present invention also relates to a rotary tool mandrel for a group of transformation of a plane support, on which a sleeve is intended to be inserted. The rotary tool chuck comprises:
- un noyau cylindrique, et  a cylindrical core, and
- un circuit fluidique de refroidissement, pour permettre une circulation d'un fluide au niveau du noyau cylindrique, et refroidir le mandrin d'outil rotatif.  a fluidic cooling circuit, to allow a circulation of a fluid at the cylindrical core, and to cool the rotary tool mandrel.
Selon un deuxième aspect de l'invention, le mandrin d'outil rotatif est caractérisé en ce qu'il comprend : According to a second aspect of the invention, the rotary tool mandrel is characterized in that it comprises:
- une paroi périphérique, qui est apte à prendre une position de repos et qui est apte à prendre une position de blocage en exerçant une pression radiale sur le manchon pour bloquer le manchon en position sur le mandrin d'outil rotatif, et  a peripheral wall, which is able to assume a rest position and which is able to assume a locking position by exerting a radial pressure on the sleeve to lock the sleeve in position on the rotary tool mandrel, and
- un circuit fluidique de pression, qui est ménagé entre la paroi périphérique et le noyau cylindrique, pour exercer la pression radiale sur le manchon.  a fluidic pressure circuit, which is formed between the peripheral wall and the cylindrical core, to exert the radial pressure on the sleeve.
Le circuit fluidique de pression pour l'outil est utilisé pour la solidarisation du manchon au mandrin et ainsi pour former l'outil complet. Le circuit fluidique de refroidissement est utilisé pour faire circuler et refroidir un fluide, afin de refroidir le mandrin. Ce circuit fluidique de refroidissement pour l'outil permet de refroidir rapidement le mandrin et le manchon à l'arrêt du groupe de transformation, facilitant l'extraction du manchon. Le circuit fluidique de refroidissement permet d'uniformiser la température de l'ensemble mandrin et manchon. The fluidic pressure circuit for the tool is used for securing the sleeve to the mandrel and thus to form the complete tool. The fluidic cooling circuit is used to circulate and cool a fluid to cool the mandrel. This fluidic cooling circuit for the tool makes it possible to rapidly cool the mandrel and the sleeve while the transformation unit is being stopped, making it easier to extract the sleeve. The fluidic cooling circuit makes it possible to standardize the temperature of the mandrel and sleeve assembly.
Selon un exemple de réalisation particulièrement favorable, le circuit de pression et le circuit de refroidissement sont raccordés entre eux, formant ainsi un seul et même circuit avec un seul fluide. Selon un exemple de réalisation, un port de connexion du circuit de refroidissement est agencé à une extrémité avant du mandrin et un port de connexion du circuit de pression est agencé à une extrémité arrière du mandrin. Les ports de connexion sont par exemple alignés sur un axe de rotation du mandrin.  According to a particularly favorable embodiment, the pressure circuit and the cooling circuit are connected together, thus forming a single circuit with a single fluid. According to an exemplary embodiment, a connection port of the cooling circuit is arranged at a front end of the mandrel and a connection port of the pressure circuit is arranged at a rear end of the mandrel. The connection ports are for example aligned on an axis of rotation of the mandrel.
Selon un exemple de réalisation, les ports de connexion comportent un élément de raccord respectif du mandrin, destiné à coopérer avec un élément de raccord complémentaire du groupe de transformation pour raccorder le circuit fluidique de pression au circuit fluidique de refroidissement.  According to an exemplary embodiment, the connection ports comprise a respective connecting element of the mandrel, intended to cooperate with a complementary coupling element of the transformation unit for connecting the fluidic pressure circuit to the fluidic cooling circuit.
Par exemple, les éléments de raccord et les éléments de raccord complémentaires sont de type raccords rapides, prenant une position d'obturation lorsqu'ils sont déconnectés, et une position d'ouverture autorisant le passage d'un fluide lorsqu'ils sont raccordés. Cela permet de fermer automatiquement le circuit de pression lorsque les éléments de raccord complémentaires sont déconnectés. For example, the connecting elements and the complementary coupling elements are of the quick-connect type, taking a closed position when they are disconnected, and an opening position allowing the passage of a fluid when connected. This automatically closes the pressure circuit when the additional coupling elements are disconnected.
Selon une forme de réalisation, le circuit de pression présente une portion en forme de tube, coaxiale à l'axe de rotation du mandrin, autour du noyau cylindrique. Le circuit de pression présente au moins une portion de conduit axiale ménagée dans chaque tourillon du mandrin, la portion de conduit axiale reliant un port de connexion. Le circuit de pression comporte au moins une portion de conduit reliant chaque portion de conduit axiale à la portion en forme de tube. Cette forme de réalisation du circuit de pression est simple à réaliser et permet de maintenir le manchon uniformément sur toute sa surface d'enveloppe intérieure. Cette forme de circuit permet également de faire circuler le fluide d'une extrémité à l'autre du mandrin.  According to one embodiment, the pressure circuit has a tube-shaped portion, coaxial with the axis of rotation of the mandrel, around the cylindrical core. The pressure circuit has at least one axial duct portion formed in each mandrel spigot, the axial duct portion connecting a connection port. The pressure circuit comprises at least one duct portion connecting each axial duct portion to the tube-shaped portion. This embodiment of the pressure circuit is simple to perform and keeps the sleeve uniformly over its entire inner envelope surface. This form of circuit also makes it possible to circulate the fluid from one end to the other of the mandrel.
L'invention a encore pour objet un groupe de transformation d'un support plan tel qu'un groupe de refoulage, de gaufrage, de découpe rotative, d'éjection des déchets, ou d'imprimerie, comportant au moins un mandrin tel que décrit et revendiqué ci- dessous. Le circuit de refroidissement destiné à être raccordé à un module de refroidissement configuré pour refroidir le fluide. Le circuit de refroidissement est raccordé au circuit de pression et forme par exemple un circuit fermé.  The subject of the invention is also a group for transforming a flat support such as a crushing, embossing, rotary cutting, waste ejection or printing unit comprising at least one mandrel as described and claimed below. The cooling circuit for connection to a cooling module configured to cool the fluid. The cooling circuit is connected to the pressure circuit and forms, for example, a closed circuit.
L'invention a encore pour objet un procédé de fonctionnement d'un groupe de transformation, tel que décrit et revendiqué ci-dessous. Le procédé comprend les étapes consistant à:  The invention further relates to a method of operating a transformation group, as described and claimed below. The method comprises the steps of:
- raccorder seulement un des deux ports de connexion du circuit de pression au circuit de refroidissement,  - connect only one of the two connection ports of the pressure circuit to the cooling circuit,
- envoyer un fluide dans le circuit de pression pour que la paroi périphérique exerce une pression radiale sur le manchon, pour bloquer le manchon en position sur le mandrin, et  sending a fluid into the pressure circuit so that the peripheral wall exerts a radial pressure on the sleeve, to lock the sleeve in position on the mandrel, and
- raccorder les deux ports de connexion du circuit de pression au circuit de refroidissement et faire circuler un fluide refroidi dans le circuit de pression, pour refroidir le mandrin.  - Connect the two connection ports of the pressure circuit to the cooling circuit and circulate a cooled fluid in the pressure circuit to cool the mandrel.
La circulation du fluide dans le circuit de pression pour le refroidissement du mandrin est par exemple réalisée en circuit fermé. Le port de connexion du circuit de pression raccordé au circuit de refroidissement pour solidariser le manchon au mandrin, est par exemple le port de connexion agencé à l'arrière du mandrin, côté opposé conducteur.  The circulation of the fluid in the pressure circuit for cooling the mandrel is for example carried out in a closed circuit. The connection port of the pressure circuit connected to the cooling circuit for securing the sleeve to the mandrel, for example is the connection port arranged at the rear of the mandrel, opposite side conductor.
Ainsi, la commande de la solidarisation du manchon au mandrin ou la commande du refroidissement du mandrin, peuvent être facilement pilotés et automatisés par les commandes de raccordement ou de déconnection du circuit de pression au circuit de refroidissement. Thus, the control of the joining of the sleeve to the mandrel or the control of the cooling of the mandrel, can be easily controlled and automated by the controls for connecting or disconnecting the pressure circuit to the cooling circuit.
Brève description des figures Brief description of the figures
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:  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 exemplary embodiment of the invention and in which:
- la Figure 1 est une vue générale d'un exemple de ligne de transformation d'un support plan;  FIG. 1 is a general view of an exemplary transformation line of a plane support;
- la Figure 2 représente une vue en perspective d'un outil rotatif supérieur et d'un outil rotatif inférieur;  - Figure 2 shows a perspective view of an upper rotary tool and a lower rotary tool;
- la Figure 3 représente une vue en perspective d'un mandrin;  - Figure 3 shows a perspective view of a mandrel;
- la Figure 4 représente une vue d'un circuit de pression raccordé à un circuit de refroidissement en formant un circuit fermé; et  - Figure 4 shows a view of a pressure circuit connected to a cooling circuit forming a closed circuit; and
- la Figure 5 représente une vue partielle en coupe verticale d'un groupe de transformation dans laquelle sont montés deux outils rotatifs comportant respectivement un mandrin et un manchon solidarisé au mandrin.  - Figure 5 shows a partial vertical sectional view of a transformation unit in which are mounted two rotary tools respectively comprising a mandrel and a sleeve secured to the mandrel.
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. Exposé détaillé de modes de réalisation préférés  The longitudinal, vertical and transverse directions indicated in 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 relative to the transverse direction T, as being respectively the driver's side and the opposite driver's side. Detailed description 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 processing line of a flat support, such as flat cardboard or roll-fed continuous strip paper, allows different operations to be performed and to obtain packaging such as folding boxes. As shown in FIG. 1, the transformation line comprises, disposed one after the other in the order of movement of the planar support, an unwinding station 1, several printing units 2, one or more series embossing groups followed by one or more series crushing units 3, followed by a rotating cutting unit 4 or platen cutter, and a receiving station 5 made objects.
Le groupe de transformation 7 comprend un outil rotatif supérieur 10 et un outil rotatif inférieur 11 , qui modifient le support plan par impression, gaufrage, refoulage, découpe, éjection des déchets, etc., en vue d'obtenir un emballage. Les outils rotatifs 10 et 11 , sont montés parallèlement l'un par rapport à l'autre dans le groupe de transformation 7, l'un au-dessus de l'autre, et s'étendent selon la direction transversale T, qui est aussi la direction des axes de rotation A1 et A2 des outils rotatifs 10 et 11 (voir Fig. 2). Les extrémités arrière des outils rotatifs 10 et 11 , côté opposé conducteur, sont entraînées en rotation par des moyens d'entraînement motorisés. En fonctionnement, les outils rotatifs 10 et 11 tournent dans des sens opposés autour de chacun des axes de rotation A1 et A2 (Flèches Fs et Fi). Le support plan passe dans l'interstice situé entre les outils rotatifs 10 et 11 , pour y être gaufré, et/ou refoulé, et/ou découpé, et/ou imprimé. The transformation unit 7 comprises an upper rotary tool 10 and a lower rotary tool 11, which modify the plane support by printing, embossing, crushing, cutting, ejection of waste, etc., in order to obtain a package. The rotary tools 10 and 11, are mounted parallel to each other in the transformation group 7, one above the other, and extend in the transverse direction T, which is also the direction of the axes of rotation A1 and A2 of the rotary tools 10 and 11 (see Fig. 2). The rear ends of the rotary tools 10 and 11, the opposite conductor side, are rotated by motorized drive means. In operation, the rotary tools 10 and 11 rotate in opposite directions around each of the axes of rotation A1 and A2 (arrows Fs and Fi). The plane support passes into the gap between the rotary tools 10 and 11, to be embossed, and / or discharged, and / or cut, and / or printed.
Au moins un des deux outils rotatifs, l'outil rotatif supérieur 10 ou l'outil rotatif inférieur 11 , comporte un mandrin 12 et un manchon amovible 13, insérable sur le mandrin 12 dans la direction transversale T (Fig. 2, Flèche G). Ainsi, lorsqu'un opérateur souhaite changer les outils rotatifs 10 et 11 , il suffit de changer les manchons 13 plutôt que la totalité de l'outil rotatif 10 et 11 . La manipulation du manchon 13 étant facilitée par son faible poids relativement à celui de l'outil rotatif 10 et 11 complet, le changement de travail peut être effectué rapidement. En outre, les manchons 13 sont peu coûteux comparés au prix de l'outil rotatif 10 et 11 complet. Il est donc avantageux d'utiliser un même mandrin 12 en combinaison avec plusieurs manchons 13, plutôt que de prévoir l'acquisition de plusieurs outils rotatifs 10 et 11 complets. Le manchon 13 présente une forme générale cylindrique. Il est par exemple en matériau aluminium.  At least one of the two rotary tools, the upper rotary tool 10 or the lower rotary tool 11, comprises a mandrel 12 and a removable sleeve 13, insertable on the mandrel 12 in the transverse direction T (FIG 2, arrow G). . 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 manipulation of the sleeve 13 being facilitated by its low weight relative to that of the rotary tool 10 and 11 complete, the change of work can be performed 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 mandrel 12 in combination with several sleeves 13, rather than to provide the acquisition of several rotary tools 10 and 11 complete. The sleeve 13 has a generally cylindrical shape. It is for example made of aluminum material.
Le mandrin 12 comporte un noyau cylindrique 14, un tourillon avant 15, un tourillon arrière 16 de part et d'autre du noyau cylindrique 14, formant un arbre de rotation de l'outil rotatif, et une paroi périphérique 17 entourant le noyau cylindrique 14 (Fig. 3). Les tourillons avant et arrière 15 et 16, présentent une forme générale cylindrique. Ils sont respectivement maintenus par des paliers avant et arrière 18, 19 du groupe de transformation 7. En fonctionnement, les tourillons arrière 16 des outils rotatifs 10 et 11 , côté opposé conducteur, sont entraînés en rotation par un système d'entraînement motorisé 20. Les éléments du mandrin 12, c'est-à-dire le noyau cylindrique 14, les tourillons avant et arrière 15 et 16 et l'enveloppe périphérique 17, sont en matériau métallique, tel qu'en acier.  The mandrel 12 comprises a cylindrical core 14, a front spigot 15, a rear spigot 16 on either side of the cylindrical core 14, forming a rotating shaft of the rotary tool, and a peripheral wall 17 surrounding the cylindrical core 14. (Fig. 3) The front and rear trunnions 15 and 16 have a generally cylindrical shape. They are respectively held by front and rear bearings 18, 19 of the transformation unit 7. In operation, the rear journals 16 of the rotary tools 10 and 11, opposite the conductive side, are rotated by a motorized drive system 20. The elements of the mandrel 12, that is to say the cylindrical core 14, the front and rear trunnions 15 and 16 and the peripheral envelope 17, are made of metallic material, such as steel.
La paroi périphérique 17, cylindrique, peut prendre une position de repos et une position de blocage dans laquelle la paroi périphérique 17 exerce une pression radiale sur le manchon 13 pour bloquer celui-ci en position sur le mandrin 12, par exemple par déformation radiale de la paroi périphérique 17.  The cylindrical peripheral wall 17 can take a rest position and a locking position in which the peripheral wall 17 exerts a radial pressure on the sleeve 13 to lock it in position on the mandrel 12, for example by radial deformation of the peripheral wall 17.
Le mandrin 12 comporte également un circuit fluidique de pression d'outil 21 ménagé en partie entre la paroi périphérique 17 et le noyau cylindrique 14 (Figs. 4 et 5), pour commander l'exercice de la pression radiale par la paroi périphérique 17. Le circuit de pression 21 est destiné à recevoir un fluide pour presser la paroi périphérique 17 contre la surface d'enveloppe intérieure du manchon 13 pour maintenir le manchon 13 au mandrin 12. Le manchon 13 ainsi maintenu fermement au mandrin 12 peut être entraîné en rotation autour de l'axe de rotation A1 et A2. Le fluide est par exemple de l'huile. The mandrel 12 also comprises a fluid pressure circuit 21 formed in part between the peripheral wall 17 and the cylindrical core 14 (FIGS. 5), for controlling the exercise of the radial pressure by the peripheral wall 17. The pressure circuit 21 is intended to receive a fluid for pressing the peripheral wall 17 against the inner envelope surface of the sleeve 13 to hold the sleeve 13 to the mandrel 12. The sleeve 13 thus held firmly to the mandrel 12 can be rotated about the axis of rotation A1 and A2. The fluid is for example oil.
Le circuit de pression 21 comprend un port de connexion 22 à un circuit fluidique de refroidissement 24 du groupe de transformation 7, pour permettre une circulation d'un fluide dans le circuit de pression 21 pour le refroidissement du mandrin 12. Selon un exemple de réalisation, un port de connexion 22 est agencé à une extrémité avant du mandrin 12. Le circuit de pression 21 comprend un autre port de connexion 23 agencé à une extrémité arrière du mandrin 12. Le circuit de pression 21 peut ainsi déboucher du mandrin 12 par un orifice du port de connexion 22 ménagé dans le tourillon avant 15 et par un orifice du port de connexion 23 ménagé dans le tourillon arrière 16. Les ports de connexion 22 et 23 sont par exemple alignés sur l'axe de rotation A1 ou A2 du mandrin 12, agencés aux extrémités respectives des tourillons avant et arrière 15 et 16. Selon une forme de réalisation, le circuit de pression 21 présente une symétrie axiale.  The pressure circuit 21 comprises a connection port 22 to a cooling fluid circuit 24 of the transformation unit 7, to allow a circulation of a fluid in the pressure circuit 21 for cooling the mandrel 12. According to an exemplary embodiment , a connection port 22 is arranged at a front end of the mandrel 12. The pressure circuit 21 comprises another connection port 23 arranged at a rear end of the mandrel 12. The pressure circuit 21 can thus lead to the mandrel 12 by a port of the connection port 22 formed in the front trunnion 15 and by a port of the connection port 23 formed in the rear trunnion 16. The connection ports 22 and 23 are for example aligned on the axis of rotation A1 or A2 of the mandrel 12, arranged at the respective ends of the front and rear trunnions 15 and 16. According to one embodiment, the pressure circuit 21 has an axial symmetry.
Par exemple, le circuit de pression 21 présente une portion en forme de tube 21 a, deux portions de conduit axiales 21 b et deux portions de conduit radiales 21 c (Fig. 5). Les portions de conduit axiales et radiales 21 b, 21 c sont linéaires. La portion en forme de tube 21 a est coaxiale à l'axe de rotation A1 ou A2 du mandrin 12. Elle est ménagée autour du noyau cylindrique 14. La paroi périphérique 17 est par exemple frettée puis soudée au noyau cylindrique 14 en laissant un interstice de quelques millimètres formant la portion en forme de tube 21 a du circuit de pression 21 .  For example, the pressure circuit 21 has a tube-shaped portion 21a, two axial duct portions 21b and two radial duct portions 21c (Figure 5). The axial and radial duct portions 21b, 21c are linear. The tube-shaped portion 21a is coaxial with the axis of rotation A1 or A2 of the mandrel 12. It is formed around the cylindrical core 14. The peripheral wall 17 is, for example, hooped and then welded to the cylindrical core 14 leaving an interstice a few millimeters forming the tube-shaped portion 21a of the pressure circuit 21.
Les portions de conduit axiales 21 b sont alignées sur l'axe de rotation A1 et A2 du mandrin 12, et sont ménagées dans un tourillon 15 et 16 respectif. Chaque portion de conduit axiale 21 b relie un port de connexion 22 et 23 à une portion de conduit radiale 21 c en formant un angle droit. Chaque portion de conduit radiale 21 c s'étend radialement pour relier une portion de conduit axiale 21 b en deux endroits diamétralement opposés d'une extrémité de la portion en forme de tube 21 a. Cette forme de réalisation du circuit de pression 21 est simple à réaliser et permet de maintenir le manchon 13 de façon uniforme sur toute sa surface d'enveloppe intérieure.  The axial duct portions 21b are aligned on the axis of rotation A1 and A2 of the mandrel 12, and are formed in a respective pin 15 and 16. Each portion of axial duct 21b connects a connection port 22 and 23 to a radial duct portion 21c forming a right angle. Each radial duct portion 21c extends radially to connect an axial duct portion 21b in two diametrically opposite locations of one end of the tube-shaped portion 21a. This embodiment of the pressure circuit 21 is simple to perform and keeps the sleeve 13 uniformly over its entire inner envelope surface.
Le circuit de pression 21 est destiné à être raccordé au circuit de refroidissement The pressure circuit 21 is intended to be connected to the cooling circuit
24, par exemple en formant un circuit fermé (voir Fig. 4). Le groupe de transformation 7 comporte également un module de refroidissement 25 configuré pour refroidir le fluide circulant dans le circuit de refroidissement 24. Le module de refroidissement 25 comporte par exemple une pompe pour faire circuler le fluide dans le circuit de refroidissement 24 et un échangeur thermique apte à refroidir le fluide circulant dans le circuit de refroidissement 24. 24, for example by forming a closed circuit (see Fig. 4). Processing Group 7 also comprises a cooling module 25 configured to cool the fluid flowing in the cooling circuit 24. The cooling module 25 comprises for example a pump for circulating the fluid in the cooling circuit 24 and a heat exchanger able to cool the fluid flowing in the cooling circuit 24.
Selon un exemple de réalisation, les ports de connexion 22 et 23 comportent un élément de raccord 26 respectif du mandrin 12, destiné à coopérer avec un élément de raccord complémentaire 27 du groupe de transformation 7 pour raccorder le circuit de pression 21 au circuit de refroidissement 24.  According to an exemplary embodiment, the connection ports 22 and 23 comprise a respective connecting element 26 of the mandrel 12 intended to cooperate with a complementary connecting element 27 of the transformation unit 7 to connect the pressure circuit 21 to the cooling circuit 24.
Les éléments de raccord 26 sont par exemple des éléments distincts, montés serrés dans un orifice du port de connexion 22 et 23 respectif du circuit de pression 21 . Les éléments de raccord 26 et les éléments de raccord complémentaires 27 sont par exemple de type raccords rapides. Les extrémités des éléments de raccord 26 et 27 coopérant ensemble sont par exemple de type male-femelle.  The connecting elements 26 are, for example, distinct elements mounted tightly in an orifice of the respective connection port 22 and 23 of the pressure circuit 21. The connecting elements 26 and the complementary connecting elements 27 are for example of the type quick couplings. The ends of the connecting elements 26 and 27 cooperating together are for example of the male-female type.
Les raccords rapides sont en outre configurés pour prendre une position d'obturation lorsqu'ils sont déconnectés l'un de l'autre et une position d'ouverture autorisant le passage du fluide lorsqu'ils sont raccordés ensemble. Cela permet de fermer automatiquement le circuit de pression 21 lorsqu'ils sont déconnectés, nécessaire pour l'exercice de la pression radiale par la paroi périphérique 17 afin de solidariser le manchon 13 au mandrin 12.  The quick couplings are further configured to assume a closed position when disconnected from each other and an open position permitting the passage of fluid when connected together. This automatically closes the pressure circuit 21 when disconnected, necessary for the exercise of the radial pressure by the peripheral wall 17 to secure the sleeve 13 to the mandrel 12.
Dans un exemple de procédé de fonctionnement du groupe de transformation 7, pour bloquer le manchon 13 en position sur le mandrin 12, un des deux ports de connexion 22 et 23 du circuit de pression 21 , tel que le port de connexion 23 agencé à l'arrière du mandrin 12 est uniquement raccordé. L'élément de raccord 26 du port de connexion 22 agencé à l'avant du mandrin 12 est alors en position d'obturation, fermant le circuit de pression 21 (Fig. 5).  In an exemplary operating method of the transformation group 7, for locking the sleeve 13 in position on the mandrel 12, one of the two connection ports 22 and 23 of the pressure circuit 21, such as the connection port 23 arranged at the rear of the mandrel 12 is only connected. The connecting element 26 of the connection port 22 arranged at the front of the mandrel 12 is then in the closed position, closing the pressure circuit 21 (FIG 5).
Puis, un fluide est envoyé dans le circuit de pression 21 . Le circuit de refroidissement 24 est isolé du module de refroidissement 25. La pression exercée par le fluide dans le circuit de pression 21 pousse alors la paroi périphérique 17 radialement, en position de blocage, la pressant contre la surface d'enveloppe intérieure du manchon 13, ce qui fixe le manchon 13 fermement au mandrin 12.  Then, a fluid is sent into the pressure circuit 21. The cooling circuit 24 is isolated from the cooling module 25. The pressure exerted by the fluid in the pressure circuit 21 then pushes the peripheral wall 17 radially, in the blocking position, pressing it against the inner envelope surface of the sleeve 13 , which fixes the sleeve 13 firmly to the mandrel 12.
Au moins un des deux éléments de raccord 26 du mandrin 12 reste connecté de l'élément de raccord complémentaire 27 du groupe de transformation 7. Le manchon 13 ainsi fermement maintenu au mandrin 12 peut être entraîné en rotation par le mandrin 12 pour la réalisation des opérations de transformation du support plan. A la fin des opérations, une fois le groupe de transformation 7 à l'arrêt, c'est-à- dire lorsque les outils rotatifs ne tournent plus, la pression du fluide est diminuée pour désolidariser le manchon 13 au mandrin 12. At least one of the two connecting elements 26 of the mandrel 12 remains connected to the complementary connecting element 27 of the transformation unit 7. The sleeve 13 thus firmly held to the mandrel 12 can be rotated by the mandrel 12 to produce the plane support transformation operations. At the end of the operations, once the transformation group 7 has stopped, that is to say when the rotary tools no longer rotate, the pressure of the fluid is decreased to separate the sleeve 13 to the mandrel 12.
Puis, l'autre des deux ports de connexion 22 du circuit de pression 21 est raccordé au circuit de refroidissement 24. Les éléments de raccord 26 alors raccordés aux éléments de raccord complémentaire 27, autorisent la circulation du fluide à travers le circuit de refroidissement 24, en formant un circuit fermé, pour être refroidi par le module de refroidissement 25, et refroidir le mandrin 12. Le mandrin 12 et le manchon 13 peuvent alors être refroidis. Lorsqu'il est suffisamment refroidi, et que la paroi périphérique 17 est en position de repos, le manchon 13 peut être facilement retiré.  Then, the other of the two connection ports 22 of the pressure circuit 21 is connected to the cooling circuit 24. The connection elements 26 then connected to the complementary coupling elements 27, allow the circulation of the fluid through the cooling circuit 24 , forming a closed circuit, to be cooled by the cooling module 25, and cool the mandrel 12. The mandrel 12 and the sleeve 13 can then be cooled. When sufficiently cooled, and the peripheral wall 17 is in the rest position, the sleeve 13 can be easily removed.
Le circuit de pression 21 utilisé pour la solidarisation du manchon 13 au mandrin 12 est ainsi également utilisé pour le refroidissement du mandrin 12 à l'arrêt du groupe de transformation 7. Cette seconde utilisation du circuit de pression 21 permet d'accélérer le refroidissement du mandrin 12 pour libérer plus facilement et rapidement le manchon 13. De plus, la commande de la solidarisation du manchon 13 au mandrin 12 ou le refroidissement du mandrin 12, peuvent être facilement pilotés et automatisés par les commandes du raccordement ou de la déconnection du circuit de pression 21 . 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 pressure circuit 21 used for the joining of the sleeve 13 to the mandrel 12 is thus also used for cooling the mandrel 12 to stop the transformation unit 7. This second use of the pressure circuit 21 accelerates the cooling of the mandrel 12 to release more easily and quickly the sleeve 13. In addition, the control of the connection of the sleeve 13 to the mandrel 12 or the cooling of the mandrel 12, can be easily controlled and automated by the controls of the connection or disconnection of the circuit pressure 21. 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

REVENDICATIONS
Mandrin d'outil rotatif pour un groupe de transformation d'un support plan, sur lequel un manchon (13) est destiné à être inséré, comprenant: Rotary tool chuck for a planar support processing unit, on which a sleeve (13) is to be inserted, comprising:
- un noyau cylindrique (14),  a cylindrical core (14),
- une paroi périphérique (17), apte à prendre une position de repos et une position de blocage en exerçant une pression radiale sur le manchon (13) pour le bloquer en position sur le mandrin (12), et  a peripheral wall (17) able to take a rest position and a locking position by exerting a radial pressure on the sleeve (13) to lock it in position on the mandrel (12), and
- un circuit fluidique de pression (21 ), ménagé entre la paroi périphérique (17) et le noyau cylindrique (14), pour exercer la pression radiale sur le manchon (13),  a fluidic pressure circuit (21) formed between the peripheral wall (17) and the cylindrical core (14) for exerting radial pressure on the sleeve (13),
caractérisé en ce qu'il comprend un circuit fluidique de refroidissement (24), pour permettre une circulation d'un fluide au niveau du noyau cylindrique (14), et refroidir le mandrin (12). characterized in that it comprises a fluidic cooling circuit (24), to allow circulation of a fluid at the cylindrical core (14), and cooling the mandrel (12).
Mandrin d'outil rotatif pour un groupe de transformation d'un support plan, sur lequel un manchon (13) est destiné à être inséré, comprenant: Rotary tool chuck for a planar support processing unit, on which a sleeve (13) is to be inserted, comprising:
- un noyau cylindrique (14), et  a cylindrical core (14), and
- un circuit fluidique de refroidissement (24), pour permettre une circulation d'un fluide au niveau du noyau cylindrique (14), et refroidir le mandrin (12), caractérisé en ce qu'il comprend  a fluidic cooling circuit (24) for allowing a fluid to circulate at the cylindrical core (14) and cooling the mandrel (12), characterized in that it comprises
- une paroi périphérique (17), apte à prendre une position de repos et une position de blocage en exerçant une pression radiale sur le manchon (13) pour le bloquer en position sur le mandrin (12), et  a peripheral wall (17) able to take a rest position and a locking position by exerting a radial pressure on the sleeve (13) to lock it in position on the mandrel (12), and
- un circuit fluidique de pression (21 ), ménagé entre la paroi périphérique (17) et le noyau cylindrique (14), pour exercer la pression radiale sur le manchon (13).  a fluidic pressure circuit (21) formed between the peripheral wall (17) and the cylindrical core (14) for exerting radial pressure on the sleeve (13).
Mandrin selon la revendication 1 ou 2, dans lequel le circuit de pression (21 ) et le circuit de refroidissement (24) sont raccordés entre eux. Chuck according to claim 1 or 2, wherein the pressure circuit (21) and the cooling circuit (24) are connected to each other.
Mandrin selon l'une des revendications précédentes, dans lequel un port de connexion (22) du circuit de refroidissement (24) est agencé à une extrémité avant du mandrin (12) et un port de connexion (23) du circuit de pression (21 ) est agencé à une extrémité arrière du mandrin (12). Chuck according to one of the preceding claims, in which a connection port (22) of the cooling circuit (24) is arranged at a front end of the mandrel (12) and a connection port (23) of the pressure circuit (21). ) is arranged at a rear end of the mandrel (12).
5. Mandrin selon la revendication 4, dans lequel les ports de connexion (22, 23) sont alignés sur un axe de rotation (A1 , A2) du mandrin (12). 5. Mandrel according to claim 4, wherein the connection ports (22, 23) are aligned on an axis of rotation (A1, A2) of the mandrel (12).
6. Mandrin selon la revendication 4 ou 5, dans lequel les ports de connexion (22, 23) comportent un élément de raccord (26) respectif du mandrin (12), destiné à coopérer avec un élément de raccord complémentaire (27) du groupe de transformation (7) pour raccorder le circuit de pression (21 ) au circuit de refroidissement (24). Mandrel according to Claim 4 or 5, in which the connection ports (22, 23) comprise a respective connecting element (26) of the mandrel (12) intended to cooperate with a complementary connecting element (27) of the group. transformer (7) for connecting the pressure circuit (21) to the cooling circuit (24).
7. Mandrin selon la revendication 6, dans lequel les éléments de raccord (26) et les éléments de raccord complémentaires (27) sont de type raccords rapides, prenant une position d'obturation lorsqu'ils sont déconnectés, et une position d'ouverture autorisant le passage d'un fluide lorsqu'ils sont raccordés. The chuck of claim 6, wherein the connecting members (26) and the complementary connecting members (27) are of the quick-connect type, assuming a closed position when disconnected, and an opening position. allowing the passage of a fluid when connected.
8. Mandrin selon l'une des revendications précédentes, dans lequel le circuit de pression (21 ) présente une portion en forme de tube (21 a), coaxiale à l'axe de rotation (A1 , A2) du mandrin (12), autour du noyau cylindrique (14). 9. Mandrin selon l'une des revendications précédentes, dans lequel le circuit de pression (21 ) présente au moins une portion de conduit axiale (21 b) ménagée dans chaque tourillon (15, 16) du mandrin (12), la portion de conduit axiale (21 b) reliant un port de connexion (22, 23). 10. Mandrin selon la revendication 9, dans lequel le circuit de pression (21 ) comporte au moins une portion de conduit (21 c) reliant chaque portion de conduit axiale (21 b) à la portion en forme de tube (21 a). 8. mandrel according to one of the preceding claims, wherein the pressure circuit (21) has a tube-shaped portion (21 a), coaxial with the axis of rotation (A1, A2) of the mandrel (12), around the cylindrical core (14). 9. mandrel according to one of the preceding claims, wherein the pressure circuit (21) has at least one axial duct portion (21 b) formed in each pin (15, 16) of the mandrel (12), the portion of axial duct (21b) connecting a connection port (22, 23). 10. Mandrel according to claim 9, wherein the pressure circuit (21) comprises at least one duct portion (21c) connecting each axial duct portion (21b) to the tube-shaped portion (21a).
11 . Groupe de transformation d'un support plan, comportant au moins un mandrin (12) selon l'une des revendications précédentes. 11. Transformation unit of a plane support, comprising at least one mandrel (12) according to one of the preceding claims.
12. Groupe selon la revendication 10, dans lequel le circuit de refroidissement (24) est raccordé à un module de refroidissement (25) pour refroidir le fluide. 13. Groupe selon la revendication précédente, dans lequel le circuit de pression (21 ) raccordé au circuit de refroidissement (24) forme un circuit fermé. Procédé de fonctionnement d'un groupe de transformation selon l'une des revendications 11 à 13, comprenant les étapes consistant à: 12. The group of claim 10, wherein the cooling circuit (24) is connected to a cooling module (25) for cooling the fluid. 13. Group according to the preceding claim, wherein the pressure circuit (21) connected to the cooling circuit (24) forms a closed circuit. A method of operating a transformation group according to one of claims 11 to 13, comprising the steps of:
- raccorder seulement un des deux ports de connexion (22, 23) du circuit de pression (21 ) au circuit de refroidissement (24),  - connect only one of the two connection ports (22, 23) of the pressure circuit (21) to the cooling circuit (24),
- envoyer un fluide dans le circuit de pression (21 ) pour que la paroi périphérique (17) exerce une pression radiale sur le manchon (13), pour bloquer le manchon (13) en position sur le mandrin (12), et  - sending a fluid into the pressure circuit (21) so that the peripheral wall (17) exerts a radial pressure on the sleeve (13), to lock the sleeve (13) in position on the mandrel (12), and
- raccorder les deux ports de connexion (22, 23) du circuit de pression (21 ) au circuit de refroidissement (24) et faire circuler un fluide refroidi dans le circuit de pression (21 ), pour refroidir le mandrin (12).  - Connect the two connection ports (22, 23) of the pressure circuit (21) to the cooling circuit (24) and circulate a cooled fluid in the pressure circuit (21) to cool the mandrel (12).
Procédé selon la revendication 14, dans lequel la circulation du fluide dans le circuit de pression (21 ) pour le refroidissement du mandrin (12) est réalisée en circuit fermé. Process according to claim 14, wherein the circulation of the fluid in the pressure circuit (21) for cooling the mandrel (12) is carried out in a closed circuit.
Procédé selon la revendication 14 ou 15, dans lequel le port de connexion (23) du circuit de pression (21 ) raccordé au circuit de refroidissement pour solidariser le manchon (13) au mandrin (12), est le port de connexion (23) agencé à l'arrière du mandrin (12), côté opposé conducteur. Method according to Claim 14 or 15, in which the connection port (23) of the pressure circuit (21) connected to the cooling circuit for securing the sleeve (13) to the mandrel (12) is the connection port (23) arranged at the rear of the mandrel (12), opposite conductor side.
EP15801685.7A 2014-12-04 2015-11-20 Tool chuck, unit for transforming a planar substrate, and operating method Active EP3227042B1 (en)

Applications Claiming Priority (2)

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EP14020104 2014-12-04
PCT/EP2015/025086 WO2016087047A1 (en) 2014-12-04 2015-11-20 Rotary tool chuck, unit for modifying a flat material, and operating method

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EP3227042B1 EP3227042B1 (en) 2021-12-08

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EP (1) EP3227042B1 (en)
JP (1) JP6445159B2 (en)
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US10464276B2 (en) 2019-11-05
CN107107518A (en) 2017-08-29
JP6445159B2 (en) 2018-12-26
KR20170086084A (en) 2017-07-25
EP3227042B1 (en) 2021-12-08
CN107107518B (en) 2020-11-06
ES2902695T3 (en) 2022-03-29
WO2016087047A1 (en) 2016-06-09
US20170305095A1 (en) 2017-10-26

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