EP3302843A1 - Outil de pliage pour presse plieuse - Google Patents

Outil de pliage pour presse plieuse

Info

Publication number
EP3302843A1
EP3302843A1 EP16735976.9A EP16735976A EP3302843A1 EP 3302843 A1 EP3302843 A1 EP 3302843A1 EP 16735976 A EP16735976 A EP 16735976A EP 3302843 A1 EP3302843 A1 EP 3302843A1
Authority
EP
European Patent Office
Prior art keywords
bending tool
drive
bending
tool
mold section
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
EP16735976.9A
Other languages
German (de)
English (en)
Other versions
EP3302843B1 (fr
Inventor
Burkhard Heller
Harald KNEIDINGER
Heinz Leumüller
Christian Gasser
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.)
Trumpf Maschinen Austria GmbH and Co KG
Original Assignee
Trumpf Maschinen Austria GmbH and Co KG
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 Trumpf Maschinen Austria GmbH and Co KG filed Critical Trumpf Maschinen Austria GmbH and Co KG
Publication of EP3302843A1 publication Critical patent/EP3302843A1/fr
Application granted granted Critical
Publication of EP3302843B1 publication Critical patent/EP3302843B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
    • B21D5/0209—Tools therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/02—Die constructions enabling assembly of the die parts in different ways
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
    • B21D5/0209—Tools therefor
    • B21D5/0227—Length adjustment of the die

Definitions

  • the invention relates to a bending tool for a bending press, comprising a preferably adjustable mold section for forming a workpiece
  • DE3235775A1 discloses a lower tool for a press brake for folding sheet metal.
  • a bending tool is used on a lower part of a tool holder.
  • the tool holder is designed as a tool holder split in the longitudinal direction of the handlebar. Both tool holder halves are adjustable transversely to the longitudinal direction Holml. In each tool holder half a replaceable Abkantwange can be used. The adjustment is made via an adjusting spindle.
  • EP0444169B1 discloses a tool for bending presses with a die, which have two semi-matrices arranged on both sides of the bending plane. By a displacement of the half-matrices perpendicular to the pressing direction, the matrix shape can be broadened or narrowed.
  • WO0176784A1 discloses a tool with two mutually displaceable jaws for adjusting the die size. The shift takes place as in the two preceding documents in a direction perpendicular to the pressing direction.
  • the object of the invention is to solve these problems and to simplify the adjustment, locking and / or the method of a bending tool.
  • manipulations of the bending tool or on the bending tool to be automated.
  • Adjustment, procedure and / or locking a bending tool should also be possible within a bending press, preferably even during a bending process.
  • the bending tool has at least one drive, wherein the drive is preferably arranged in the interior of the bending tool.
  • the drive is integrated in the bending tool or forms a unit with this.
  • the drive includes a power supply interface, e.g. an electrical connection.
  • the drive is in particular an active drive, i. can only be activated upon supply of particular electrical energy.
  • the drive can be controlled either directly via the power supply interface or via a separate control input.
  • the drive can - depending on its function in the bending tool - a positioning drive (for example in
  • the drive may be switchable or continuously operable between (e.g., two) discrete (end) positions. It can be designed in particular as a motor (rotary or linear motor), solenoid, cylinder drive, pump drive, locking actuator and / or valve actuation.
  • the bending tool can have at least two drives whose functionalities are different.
  • the drive is accommodated in a bore extending in the bending tool, in particular in a block of solid material.
  • the drive can be designed to save space, in particular as a miniature drive.
  • the bending tool and the bending press are designed in particular for bending flat workpieces, in particular sheets.
  • a preferred embodiment is characterized in that
  • the mold section is adjustable, -
  • the bending tool comprises a cooperating with the mold section, preferably hydraulic locking device which secures the mold section against adjustment in the locked state, and
  • a drive of the bending tool cooperates with the locking device, wherein the locking device can be converted by the drive in the locked state and / or in the released state.
  • the locking device ensures reliable locking of the molding section or its molding part / s in at least one, preferably two (opposite) adjustment direction (s); In particular, it can also prevent a return movement of the mold section.
  • the locking device can be transferred from a released to a locked state, and vice versa.
  • the locking device By driving the bending tool (in particular an actuator, an engine, a cylinder or the like.) Is the locking device in the locked state and / or in the dissolved state can be transferred.
  • the release and / or locking can therefore take place automatically by activation of the drive integrated in the bending tool, preferably by a controller.
  • the drive (as valve actuation) interacts with an actuatable (lockable or unlockable) valve of the blocking device.
  • the locking device is preferably arranged in the interior of the bending tool.
  • the integration of the locking device inside the bending tool allows the construction of compact and easy-to-handle tools. Inside the bending tool, the locking device is protected from external influences. In the immediate vicinity of the mold section, it can also be designed to save space.
  • a preferred embodiment is characterized in that the locking device has a pressure medium channel which is divided by the actuatable valve, preferably by an unlockable check valve, into a first pressure medium chamber and a second pressure medium region, the first pressure medium region is coupled to the at least one molding.
  • the pressure medium channel is filled with an incompressible pressure medium, preferably hydraulic oil.
  • the mold section When the valve is closed, the mold section remains locked in the first pressure medium region due to the incompressible pressure medium.
  • the valve When the valve is open, the pressure medium can flow from the first pressure medium area into the second pressure medium area, wherein now also the shape section is adjustable.
  • the said valve is operable by the above-mentioned drive of the bending tool.
  • the valve can be of any type to decouple the pressure medium ranges from one another in terms of pressure. Examples would be a check valve (spring loaded or unloaded), a ball valve, slide valve, and the like. The valve could also be externally operable.
  • pressure medium channel is understood to mean any device which can accommodate pressure medium (also under pressure) .
  • the pressure medium channel may in particular comprise a pressure medium line, a pressure medium tube and / or a cylinder in which eg an element with a piston surface can be displaced
  • the course of the pressure medium channel can be formed arbitrarily, in particular have straight and curved sections along its extent.
  • a mechanical locking device could also be used. This would represent a mechanical locking of the at least one molded part.
  • An integrated drive could transfer the latch to the locked (or locked) and de-stressed (or released) states.
  • a preferred embodiment is characterized in that the mold portion has at least two movable mold parts which cooperate with the same locking device, in particular by a common pressure medium channel are coupled together.
  • the adjustment and also provision of the moldings can be done synchronously. Also, only one locking device is required.
  • a preferred embodiment is characterized in that the bending tool has a rear part device, in particular a return spring, for returning the at least one molded part.
  • a preferred embodiment is characterized in that the rear part device comprises a force accumulator, in particular a spring, which can be acted upon by ei-ne adjusting movement of the at least one molded part.
  • a force accumulator in particular a spring
  • a preferred embodiment is characterized in that the reset means cooperates with the blocking device, preferably being coupled to the second pressure medium region of the pressure medium channel. To reset only the locking device must be operated.
  • a preferred embodiment is characterized in that a drive of the bending tool is an adjusting drive for adjusting the mold section, wherein the drive preferably cooperates with at least one movable relative to a holding portion of the bending tool molding of the mold section.
  • the adjustment of the molding e.g., an increase in die width
  • a big advantage is that the adjustment accuracy can be increased.
  • the adjustment can be carried out during the bending process on a workpiece.
  • a preferred embodiment is characterized in that a drive of the bending tool is a travel drive for moving the bending tool in a tool holder or in a tool holder.
  • the bending tool self-propelled.
  • An external moving device is therefore no longer absolutely necessary.
  • This measure allows an automatic and accurate positioning of the bending tool by a tool drive.
  • the bending tool at least one movable by the drive drive part, in particular a wheel, a chain, a bead or a circulating belt having, wherein preferably at least a portion of the drive member is located on an outer side of the bending tool.
  • the moving drive member cooperates with a stationary (travel) surface, eg the tool holder, whereby a movement of the bending tool is effected.
  • a preferred embodiment is characterized in that the bending tool has at least one locking device for locking the bending tool on or in a tool holder and that a drive of the bending tool cooperates with the locking device, wherein the locking device by the drive in the locked state and / or in the dissolved state is transferable.
  • the locking of the bending tool to the tool holder is automated.
  • the drive encompassed by the bending tool ensures reliable operation and facilitates and shortens work processes associated with the bending process.
  • a preferred embodiment is characterized in that the bending tool has an electrical, preferably rechargeable energy store (for example battery or rechargeable battery), which is connected to the drive.
  • the energy store is preferably arranged in the interior of the bending tool and enables activation of the drive even in situations in which there is no external power supply. This can e.g. be the case when the bending tool is inserted in the tool holder of a bending press. If the tool has been returned to the tool magazine after a bending process, the energy storage device can be recharged there for the next use.
  • a preferred embodiment is characterized in that the bending tool a
  • control device by which the drive is controlled. This enables targeted control in terms of time, direction and force.
  • a preferred embodiment is characterized in that the bending tool has a preferably wireless control interface, which is connected to the control device. As a result, the drive of the bending tool can be reliably and in particular also controlled by radio.
  • a preferred embodiment is characterized in that the drive is an electromagnetic drive, in particular a motor or an electromagnet, or a hydraulic drive, in particular a cylinder-piston unit or a pump drive.
  • the bending tool has an electrical and / or electromagnetic interface, which is connected to the drive and / or with an electrical energy store, wherein preferably the interface is arranged on the holding portion of the bending tool.
  • the drive is supplied with energy via the interface.
  • a (preferably rechargeable) electrical energy store in particular a battery or a rechargeable battery, can also be connected between the interface and the drive. During use of the tool, the drive can draw energy from the energy storage.
  • a preferred embodiment is characterized in that the bending tool has a holding portion for insertion of the bending tool in a tool holder of a bending press and that the mold portion comprises at least one movable relative to the holding portion molding.
  • This embodiment of a bending tool allows an adjustment of the mold section by a drive integrated in the bending tool and / or by an external drive, in particular by a press drive and / or drive drive of a bending press.
  • the mold section with the movable mold part (s) and the holding section can be formed on opposite sides of the bending tool, so that the adjustment process of the mold section is not impaired by the holding or fixing of the bending tool by a tool holder.
  • the mold section represents the workpiece-side section and the holding section represents the workpiece-facing section of the bending tool.
  • the extent of the bending tool in a direction extending from the workpiece-side region of the mold section to the holding section is preferably variable. Such a (height) change goes hand in hand with an adjustment of the mold section.
  • a preferred embodiment is characterized in that the mold section is adjustable by pressurizing the bending tool in a direction extending from the workpiece-side region of the mold section to the holding section. Such a pressurization can - as mentioned above - also be done by the press drive a bending press.
  • a preferred embodiment is characterized in that a pressing direction is predetermined by the forming section of the bending tool (ie the shape of the forming section defines a pressing direction) and that the extension of the bending tool in the pressing direction is greater in a first position of the forming section than in a second position of the bending section Form section.
  • the adjustment of the mold section is accompanied by a change in the height of the bending tool, i. the bending tool is compressible or fauxstauchbar.
  • a change in shape of the mold portion e.g., change in die width
  • the pressing direction is e.g. in the case of a die, is defined by a direction perpendicular to the plane in which the die opening of the die is located. In the case of a punch, the pressing direction is dictated by the direction in which the punch points.
  • a preferred embodiment is characterized in that the holding portion is formed on a block, wherein the at least one molded part is movably mounted in or on the block, preferably linearly guided.
  • the Formab-section with the movable molding (s) and the holding portion are preferably formed on opposite sides of the bending tool.
  • the mold section at the top of the bending tool and the Hai te-section can be formed on the underside of the bending tool.
  • a block extends, in which at least one integrated drive can be accommodated.
  • the (already mentioned) locking device can be integrated.
  • at least one bore is formed in the block (made of solid material).
  • the hole (s) can / can
  • the blocking device form at least a portion of the pressure medium channel (the blocking device), and / or form a guide for the at least one molded part or a transmission part interacting with the same,
  • a preferred embodiment is characterized in that the mold section of the bending tool forms a die whose die width is adjustable. This results in a variety of bending options with the same tool.
  • the die is preferably elongate and has a substantially constant cross-section along its longitudinal extent.
  • a preferred embodiment is characterized in that the mold portion of the bending tool comprises two linearly movable mold parts which form the die jaws of the die, wherein the directions of movement of the two mold parts are V-shaped.
  • the adjustment can be carried out by a drive integrated in the bending tool or - alternatively - by a press drive of the bending press. In the latter case, pressurization in the pressing direction or transversely to the plane in which the die opening is located causes an enlargement of the die width.
  • the distance between the workpiece-side end of the mold section and the holding section formed on the opposite side of the bending tool is thus variable.
  • a compression of the bending tool is accompanied here by an increase in the Gesenkweite.
  • a preferred embodiment is characterized in that the bending tool has a spacer, preferably in the form of a web, through which the die jaws spaced apart from each other. Such a spacer also forms a type of guide through which the jaws are guided in a defined path.
  • a preferred embodiment is characterized in that the at least one molded part is movable between two stop positions, one stop position corresponding to a fully extended position of the shaped part and the other stop position corresponding to a completely retracted position of the shaped part.
  • stop positions one stop position corresponding to a fully extended position of the shaped part and the other stop position corresponding to a completely retracted position of the shaped part.
  • stops can be provided, which also prevent a molded part from falling off the rest of the bending tool.
  • the aforementioned object is also achieved with a bending press with a tool holder and a bending tool according to the invention.
  • a preferred embodiment is characterized in that the tool holder for supplying energy to the drive of a bending tool has an electrical or electromagnetic interface, wherein preferably the tool holder is in the form of a rail and the interface in the form of at least one along and / or running in the rail Contact strip is formed.
  • the bending tool used in the tool holder can also be supplied with electrical energy during the bending process. In the case of a contact strip, such a supply can take place independently of the position of the bending tool in the rail.
  • the object mentioned at the outset is also achieved with a method for manipulating a bending tool, wherein the manipulation of the bending tool is effected by a drive of the bending tool (that is, by a bending tool-specific drive).
  • a preferred embodiment is characterized in that the manipulating the locking and / or releasing an adjustable mold portion of the bending tool, and / or adjusting a mold portion of a bending tool, and / or the method of a bending tool in a tool holder and / or within a tool holder, and / or the locking of the bending tool on or in a tool holder comprises.
  • the method is performed during a bending process on a workpiece.
  • a preferred embodiment relates to a method for adjusting a molding section of a bending tool in a bending press, which has a press drive.
  • the adjustment of the molding section of the bending tool by the press drive and / or by a (integrated in the bending press) traversing drive in the bending press a relative movement between the bending tool with the mold section to be adjusted and an opposite bending tool in particular in a direction transverse to the pressing direction ( the bending press) causes.
  • the adjustment of the mold section by the press drive and / or a travel drive integrated in the press brake is based on the idea of effecting the adjustment movement on the mold section by a relative movement of two opposing tools or tool holders.
  • the press drive and / or the travel drive thus simultaneously act as adjustment drive for the form-section. Therefore, no separate drive is required for the adjustment.
  • the adjustment can be done automatically.
  • a major advantage is that the adjustment can be done during the bending process on a workpiece. As a result, complex bending operations on a workpiece can be realized without having to change tools.
  • the press drive is that drive that causes opposing tools to move toward each other and to bend a workpiece placed between them.
  • the direction of the juxtaposition of opposing tools corresponds to the pressing direction of the bending press.
  • the bending press can also have a travel drive in order to position the tools in particular transversely to the pressing direction.
  • this travel drive can be used to adjust the mold section of a (used in the tool holder) bending tool.
  • Corresponding the relative travel direction effected by the travel drive can (mechanically) act on a bending tool on the molding section of another bending tool and thereby move a movable molding.
  • a preferred embodiment is characterized in that the adjustment of the mold section takes place in that tool holders of the bending press, preferably an upper tool holder and a lower tool holder, are moved relative to one another, in particular towards one another, by the press drive and / or by the drive drive.
  • the bending tool is held with the mold section to be adjusted by one of the tool holders and is applied via the opposite tool holder with pressure.
  • the opposing tool holder or a bending tool or a workpiece inserted in the opposite tool holder abuts against the mold section to be adjusted.
  • the bending tool to be adjusted is used here in the tool holder, ie it is already in the position required for the bending operation.
  • the mold section of this bending tool can now be adjusted without having to be removed from the tool holder.
  • the adjustment takes place (directly or indirectly) by the relative movement of the opposite tool holder.
  • a preferred embodiment is characterized in that the adjustment of the mold section of the bending tool is performed during a bending operation on a workpiece, wherein the workpiece during the Verstel-lens of the mold section is arranged in the bending press, preferably between the bending tool with the to be adjusted Form section and an opposite bending tool is clamped.
  • this allows complex bending operations to be performed without the need to use (and change constantly) multiple tools with differently shaped mold sections.
  • a preferred embodiment is characterized in that the Formab section of the bending tool forms a die and the adjustment of the mold section comprises an adjustment of the die width of the die.
  • the shape of a workpiece, in particular on the bending edge, can be selectively influenced and varied.
  • the die forming the bending tool is inserted in the lower tool holder.
  • the Upper tool holder can now, preferably via an inserted upper tool, adjust the die.
  • a preferred embodiment is characterized in that the bending tool has a holding section for inserting the bending tool into a tool holder of the bending press and that the mold section of the bending tool comprises at least one movable relative to the holding section mold part, wherein when adjusting the mold section by the press drive at least one molded part is preferably moved linearly relative to the holding section.
  • the bending tool is fixed in the tool holder via the holding section. However, the molded part remains - regardless of the fixation of the Garab-section through the tool holder - adjustable.
  • the mold portion with the movable mold part (s) and the holding portion are preferably formed on opposite sides of the bending tool. Thus, the mold portion may be formed on the upper side of the bending tool and the holding portion on the underside of the bending tool.
  • a preferred embodiment is characterized in that the adjustment of the mold section comprises a displacement of the at least one molded part and / or a pivoting of the at least one molded part and / or an inclination of the at least one molded part relative to the pressing direction.
  • the adjustment of the mold section comprises a displacement of the at least one molded part and / or a pivoting of the at least one molded part and / or an inclination of the at least one molded part relative to the pressing direction.
  • the adjustment of the mold section can only be done with dissolved locking device. In the locked state ensures that the mold section does not change.
  • the integration of such a blocking device on or in the bending tool represents a particularly preferred embodiment, since no separate measures have to be taken to lock the molding section.
  • a preferred embodiment is characterized in that the locking device is released that by the press drive opposing tool holders of the bending press are moved towards each other, wherein the bending tool is acted upon by the mold section to be adjusted with pressure, and that the locking device after reaching the desired position the mold section is transferred to the locked state.
  • the actuation of the locking device is effected by a drive according to the invention encompassed by the bending tool.
  • Figure 1 is a bending press with a bending tool according to the invention, the mold section occupies a first position.
  • FIG. 2 shows the bending press from FIG. 2, the shaping section of the bending tool assuming a second position
  • FIG. 3 shows a locking device with pressure medium channel and rear part device
  • FIG. 5 shows an embodiment of a bending tool according to the invention in a schematic representation
  • FIG. 6 shows an embodiment of a (sub) tool holder with contact strips
  • Fig. 7 shows a variant of the valve actuation
  • FIG. 8 shows an embodiment of a bending press with press drive and travel drive; 9 shows a bending tool with integrated positioning drive;
  • FIG. 10 shows a bending tool with integrated drive for actuating a locking device
  • FIG. 11 shows a further embodiment of a bending tool
  • Fig. 13 is a bending tool with pivotable molding.
  • 1 and 2 show a bending press 10 with a lower tool holder 11 and an upper tool holder 12 and a press drive 13 for moving together the tool holders 11, 12 with the bending tools 1, 14 inserted therein. Between the tools 1, 14 is already a sheet-shaped workpiece positioned.
  • the bending tool 1 has a holding section 5 for inserting the bending tool 1 into the tool holder 11 of the bending press 10 and a mold section 2 for forming the workpiece 15.
  • the mold section 2 comprises two mold parts 3, 4 which are linearly movable relative to the holding section 5 and form the die jaws of a die.
  • the holding portion 5 is formed on the underside of a block 6, wherein the mold parts 3, 4 are movably mounted in or on the block 6 (here: linearly guided).
  • Fig. 1 and 2 shows that the die width of the die is adjustable by an adjustment of the mold parts 3, 4.
  • the degrees of freedom of movement of the two mold parts 3, 4 are V-shaped.
  • the bending tool 1 comprises a spacer 21, preferably in the form of a web, through which the die jaws are spaced apart or guided.
  • the mold parts 3, 4 are movable between two stop positions, wherein the one stop position of a fully extended position of the mold parts 3, 4 and the other stop position corresponds to a fully retracted position of the mold parts 3, 4.
  • the stop pin defining the stop positions is shown in FIGS. 1 and 2 (without reference number).
  • the mold section 2 is adjustable by pressurizing the bending tool 1 in a direction extending from the workpiece-side region of the mold section 2 to the holding section 5.
  • a pressing direction is defined (direction perpendicular to the plane in which the die opening is located).
  • the extent (height) of the bending tool 1 in the pressing direction is greater in a first position of the forming section 2 (FIG. 1) than in a second position of the forming section 2 (FIG. 2).
  • the adjustment of the mold section 2 can also be effected by a travel drive 26 of the bending press 10.
  • the travel drive 26 effects a relative movement between the bending tool 1 with the mold section 2 to be adjusted and an opposite bending tool 14 in a direction transverse to the pressing direction 25.
  • the adjustment of the mold section 2 can be effected in that by the press drive 13 and / or by the drive 26 opposing tool holders 11, 12 of the bending press 10, preferably an upper tool holder and a Unterwerk- zeughalterung, relative to each other, in particular towards each other.
  • the bending tool 1 is held with the mold section 2 to be adjusted by one of the tool holders 11 and pressurized via the opposite tool holder 12 with pressure.
  • the opposing tool holder 12 or a bending tool 14 (FIG. 8) inserted in the opposite tool holder 12 or a workpiece 15 (FIGS. 1 and 2) can abut against the mold section 2 to be adjusted.
  • the adjustment of the mold section 2 of the bending tool 1 can be performed during a bending operation on a workpiece 15.
  • the workpiece 15 is arranged during the displacement of the mold section 2 in the bending press 10, preferably clamped between the bending tools 1, 14.
  • the adjustment of the mold section 2 may include a displacement and / or a pivoting of the at least one molded part 3, 4 and / or an inclination of the at least one molded part 3, 4 relative to the pressing direction 25.
  • the molded parts 3, 4 each cooperate with transmission parts 23, 24, which have a piston surface on the side facing away from the respective molded part 3, 4 and are displaceable in a cylinder.
  • the cylinders merge into a common pressure medium channel 17.
  • the bending tool 1 comprises a locking device 7 which cooperates with the mold section 2 (here: hydraulic) and which in the locked state comprises the locking device 7
  • Form section 2 against an adjustment secures.
  • the locking device 7 is arranged in the interior of the bending tool 1.
  • the locking device 7 comprises a drive 8, in particular an actuator, a motor, a cylinder or the like, by means of which the locking device 7 can be transferred into the locked state and / or into the released state.
  • the locking device 7 When adjusting the mold section 2, the locking device 7 is first released. Then 13 opposing tool holders 11, 12 of the bending press 10 are moved towards each other by the press drive. In this case, the bending tool 1 is subjected to the mold section to be adjusted 2 with pressure. After reaching the desired position of the mold section 2, the locking device 7 is transferred to the locked state.
  • the blocking device 7 comprises a pressure medium channel 17 which is divided by an actuatable valve 16, preferably by a pilot-operated check valve, into a first pressure medium region 18 and a second pressure medium region 19.
  • the first pressure medium region 18 is coupled to the molded parts 3, 4 via the transmission parts 23, 24.
  • the two mold parts 3, 4 thus interact with the same locking device 7 in the illustrated embodiment.
  • the blocking device 7 is coupled via the second pressure medium region 19 with a return device 20, which brings about a return of the molded parts 3, 4.
  • the rear part device 20 comprises a return spring and is designed as a force accumulator, which can be acted upon by an adjusting movement of the at least one molded part 3, 4.
  • Fig. 7 shows an embodiment of a locking mechanism 7, wherein the drive in the form of a (rotary) motor is formed. The rotational movement is converted into a linear movement of an actuating pin which opens the check valve 16.
  • the drive 8 must bring the locking mechanism 7 only in the released state. In the locked state, the locking device 7 passes by itself, namely by the check valve sixteenth
  • FIG. 4 and 5 show embodiments in which the locking device 7 are housed in the interior of the bending tool 1 and the block 6.
  • the pressure medium channel 17 may be formed by at least one bore.
  • Fig. 4 is a protruding from the side wall of the bending tool 1 actuating element 26 can be seen, with which the valve position is adjustable from outside (here by a rotation).
  • the valve 16 is integrally formed with the actuator 26.
  • the embodiment according to FIG. 5 shows a drive 8 which is arranged in the interior of the bending tool 1 or the block 6 and which is designed here as a valve drive. Also visible is an electrical interface 9, which is connected to the drive 8.
  • the interface 9 is arranged on the holding section 5 of the bending tool 1.
  • FIG. 6 shows a corresponding tool holder 11, which has an electrical interface 22 for supplying energy to the bending tool 1.
  • the tool holder 11, 12 has the shape of a rail.
  • the interface 22 is designed in the form of at least one contact strip extending along or in the rail.
  • Interfaces 9, 22 could also be used electromagnetic (ie inductive) interfaces.
  • the bending tool 1 has at least one drive 8, 28, 34, 38. This is preferably arranged in the interior of the bending tool 1.
  • the possibility of linking the locking device 7 with an integrated, ie bending tool-specific drive has already been described in detail.
  • FIGS. 12 and 13 Another possibility is to integrate an adjusting drive 28 for adjusting the mold section 2 in the bending tool 1.
  • a drive 28 cooperates with at least one movable relative to a holding portion 5 of the bending tool 1 molded part 3, 4 of the mold section 2.
  • FIGS. 12 and 13 the drive is designed as a drive 28 of a pump 27 (with two delivery directions).
  • the pump 27 conveys the pressure medium and pushes (or 'pulls') so that the transmission parts 23, 24, whereby an adjustment of at least one molded part 3 is effected.
  • FIG. 12 one pump connection to the valve 16 and the other pump connection to a pressure medium reservoir 29 are connected.
  • FIG. 13 also shows the possibility of application to a stamp-type bending tool 1.
  • the embodiment according to FIG. 9 shows a bending tool 1 with a traveling drive 38 for moving the bending tool 1 in a tool holder 11 or in a tool holder 11.
  • the bending tool 1 comprises at least one drive part 37, in particular a wheel, which can be moved by the drive 38 , a chain, a bead or a circulating band.
  • To cooperate with the tool holder 11 is at least a portion of the drive member 37 on an outer side of the bending tool 1.
  • the embodiment of FIG. 10 shows a bending tool with a locking device 35 for locking the bending tool 1 on or in a tool holder 11.
  • An integrated drive 34th of the bending tool 1 cooperates with the locking device 35 (here via a pressure medium line 36).
  • the locking device 35 can be transferred by the drive 34 in the locked state and / or in the released state.
  • the drive 8, 28, 34, 38 may be, for example, an electromagnetic drive, in particular a motor or an electromagnet, or a hydraulic drive, in particular a cylinder-piston unit or a pump drive.
  • FIG. 11 shows preferred aspects which, individually or together, can be used in all embodiments described so far.
  • the bending tool 1 may have an electrical, preferably rechargeable energy storage 32, which is connected to the drive 8, 28, 34, 38.
  • the bending tool 1 may have a control device 30, by means of which the drive 8, 28, 34, 38 can be actuated.
  • a preferably wireless control interface 31 connected to the controller 30 may be provided to communicate external control commands.
  • an electrical (or inductive) interface 9 which is connected to the drive 8 and to the electrical energy store 32.
  • Such a bending tool 1 can be used with a tool holder 11 according to FIG. 6 or FIG. 8 in order to supply the drive, in particular to energize it.
  • the manipulation of the bending tool by the drive 8, 28, 34, 38, the locking and / or loosening of an adjustable mold section 2 of the bending tool 1, and / or adjusting a mold section 2 of a bending tool 1, and / or the method of a bending tool. 1 in a tool holder 11 and / or within a tool holder 11, and / or the locking of the bending tool 1 on or in a tool holder 11 include.
  • Molded part 34 drive

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

La présente invention concerne un outil de pliage (1) destiné à une presse plieuse (10), comprenant une section de formage (2) de préférence réglable pour former une pièce (15), se caractérisant en ce que l'outil de pliage (1) présente au moins un entraînement (8, 28, 34, 38), l'entraînement (8, 28, 34, 38) étant de préférence disposé à l'intérieur de l'outil de pliage (1). L'invention concerne également une presse plieuse et un procédé pour manipuler un outil de pliage.
EP16735976.9A 2015-05-28 2016-05-25 Outil de pliage pour presse plieuse Active EP3302843B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50431/2015A AT517319B1 (de) 2015-05-28 2015-05-28 Biegewerkzeug für eine Biegepresse
PCT/AT2016/050162 WO2016187637A1 (fr) 2015-05-28 2016-05-25 Outil de pliage pour presse plieuse

Publications (2)

Publication Number Publication Date
EP3302843A1 true EP3302843A1 (fr) 2018-04-11
EP3302843B1 EP3302843B1 (fr) 2019-02-27

Family

ID=56368733

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16735976.9A Active EP3302843B1 (fr) 2015-05-28 2016-05-25 Outil de pliage pour presse plieuse

Country Status (3)

Country Link
EP (1) EP3302843B1 (fr)
AT (1) AT517319B1 (fr)
WO (1) WO2016187637A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112044992A (zh) * 2020-08-11 2020-12-08 广东职业技术学院 一种可调节的双面折弯机构
DE102021117367A1 (de) 2021-07-06 2023-01-12 Laukien GmbH & Co. Beteiligungen Kommanditgesellschaft Biegewerkzeug, Biegepresse, Biegeverfahren und Werkstück

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1588640A (en) * 1924-08-07 1926-06-15 Williamson Robert Apparatus for angular bending or curving of metal sheets and bars
ATE38788T1 (de) * 1983-10-10 1988-12-15 Cornelis Hendricus Liet Einrichtung zum biegen von blechen.
US5022248A (en) * 1990-10-12 1991-06-11 Caterpillar Inc. Press brake apparatus with powered adjustable female die jaws
DE9213532U1 (de) * 1992-10-07 1993-01-28 Haberstock, Rolf, 7897 Küssaberg Biegevorrichtung zum Biegen von Blechteilen
JP4643001B2 (ja) * 2000-08-11 2011-03-02 株式会社アマダ電子 曲げ加工装置
ITAN20010039A1 (it) * 2001-08-29 2003-03-01 Fabrizio Paoletti Matrice di piegatura regolabile, in particolare per presse di piegatura
US7454943B2 (en) * 2003-07-15 2008-11-25 Tooling Innovations, Inc. Articulated bending brake for sheet metal forming
AT507911B1 (de) * 2009-03-04 2010-11-15 Trumpf Maschinen Austria Gmbh Verfahren zum freibiegen

Also Published As

Publication number Publication date
AT517319A1 (de) 2016-12-15
AT517319B1 (de) 2017-06-15
EP3302843B1 (fr) 2019-02-27
WO2016187637A1 (fr) 2016-12-01

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