EP0963801B1 - Presse zur Herstellung variabler Bearbeitungsmuster - Google Patents

Presse zur Herstellung variabler Bearbeitungsmuster Download PDF

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Publication number
EP0963801B1
EP0963801B1 EP99110928A EP99110928A EP0963801B1 EP 0963801 B1 EP0963801 B1 EP 0963801B1 EP 99110928 A EP99110928 A EP 99110928A EP 99110928 A EP99110928 A EP 99110928A EP 0963801 B1 EP0963801 B1 EP 0963801B1
Authority
EP
European Patent Office
Prior art keywords
tool
press according
press
punch
bearing surface
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.)
Expired - Lifetime
Application number
EP99110928A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0963801A2 (de
EP0963801A3 (de
Inventor
Klaus Blei
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.)
L Schuler GmbH
Original Assignee
L Schuler GmbH
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 L Schuler GmbH filed Critical L Schuler GmbH
Publication of EP0963801A2 publication Critical patent/EP0963801A2/de
Publication of EP0963801A3 publication Critical patent/EP0963801A3/de
Application granted granted Critical
Publication of EP0963801B1 publication Critical patent/EP0963801B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/246—Selection of punches

Definitions

  • the invention relates to a press, in particular a perforating press for shaping changeable patterns in preferably flat workpieces.
  • DE 4135787 A1 discloses a punch press with a Known tool, in its upper tool punch are arranged in two rows. The two rows are there straight and transverse to the direction of transport of a sheet to be punched. The one in the Upper tool punch held parallel to each other stand on gap, i.e. the punches of some Row are covered against the punch of the other row to the transport direction of the workpiece, for example offset by half a lateral distance.
  • the punches are parallel with their longitudinal direction aligned with the working direction of the upper tool and adjustable stored in it.
  • each one slidably mounted transversely to the punch Locking bolts are the punch in their advanced Lockable active position.
  • the latch will be on the side the punch are released and can when the top tool moves towards the workpiece, Place on the workpiece and from there into the upper tool can be pressed without a punching process takes place.
  • the latches are connected to fluid cylinders that serve as a drive device.
  • Each bar has one Contact surface on that of a corresponding counter contact surface corresponds to the punch. If the bolt is pushed forward comes the contact surface of the bolt with the Counter contact surface of the punch in contact and the Riegel acts as an abutment. If the bolt is withdrawn, the punch is released.
  • FR 2 407 765 A is a punching device for Generation of variable hole patterns known.
  • a Punching tool provided with a stamp group that is held at the top of a common pressure piece. This is a selection slide arranged on a press ram assigned that is movable transversely to the punching direction is stored. There are two rib-like ones on the selection slider Teeth formed, the corresponding groove-like Wells in the pressure piece are assigned. By moving the selection slider sideways the stamp group in question is activated or deactivated become.
  • DE-A-27 41 537 is a punching tool known that different punching operations, namely a contour cut and a hole punching process can execute.
  • a stamp vertically movably mounted in the tool provided that cuts out the outer contour of the workpiece.
  • a smaller stamp is axial in this stamp movably mounted for punching holes in the Workpiece serves.
  • Between the master cylinder and The two stamps are arranged with several slides activate and deactivate the individual stamps. one this slide has one with two teeth Contact surface.
  • the assigned stationary piece of equipment has two corresponding recesses. Do they stand Teeth tooth on tooth, the contour stamp is active during only the punch is active when the teeth of the slide with the gaps of the contact piece.
  • the top tool of the press points several tool parts, e.g. B. punch, other stamps, fingers or other tool parts on the workpiece, for example a sheet metal, at a Make press strokes when they are activated are.
  • the reshaping can consist in that Holes with any one corresponding to the punch Punched out shape, indentations or other Deformations are made.
  • the movably mounted Tool parts are in a working position by a locking member lockable.
  • the locking element can be a locking bolt, a locking cam or the like. His movement is correspondingly a linear movement, a rotary movement or another actuating movement. In any case, can the actuating movement is formed on the locking member Investment or restricted area with a counter abutment area in and transferred out of the plant.
  • the tool part is locked in the active position. Otherwise it is released.
  • the actuating movement of the locking member are significantly shortened, i.e. turn out short-stroke without the area of the Contact area or the counter contact area reduced overall and thus the surface pressure would be increased.
  • the of the total area required for dimensioning is therefore on many sub-areas divided that a sufficiently short Hub is obtained.
  • a short-stroke actuating movement enables then a faster adjustment of the locking member from its locked position to the release position and vice versa.
  • the Contact surface on the locking member for example a locking bolt or a locking cam formed while the counter abutment surface on the adjustable tool part, i.e. For example, on a punch or on one with the punch connected intermediate piece (pressure member) is trained.
  • the counter surface of the locking bolt or other locking member forms the abutment for the contact surface of the adjustable tool part.
  • the contact surface to the To provide a locking member
  • the locking element For example. is this through formed a slide, which is facing away from the stamp Side is interrupted by recesses Has contact surface.
  • the one provided on the top tool Counter bearing surface is also through recesses interrupted. The axial movement can be adjusted by lateral adjustment the punch and the associated locking member can now be released or blocked.
  • each locking member be provided with its own drive device to to be able to adjust the locking member individually if necessary. Because of the adjustment movement required only in short stroke can use relatively underperforming drives Find. For example. can magnetic drives so small designed to be fully in the top tool or parts of it. This is especially true if the contact surface and the counter contact surface in more than two surface areas are divided.
  • a further relief of the positioning movement is also possible in that the punch or other tool parts at the time of the potential Switching the blocking elements from their blocking position in their locking position or vice versa in the active position are located, so that the path for the locking member is clear is.
  • the locking member can thus be used on any inclined surfaces or other means are waived that derived the tool part from a movement of the locking member would push into his active position. Thereby motion stroke and drive power are also saved.
  • the transfer of the tool parts to the active position can be caused by spring preloading of the tool parts their active position can be reached.
  • the buffer element can be a rubber buffer that if the punch in question is active from the punch is easily overcome, whereas it is his Compliancy is such that he is the weight and Inertial forces of the tool part or punch under Preventing workpiece contact can pick up when the relevant tool part is not active.
  • the concept according to the invention allows neighboring Punches or tool parts very close together to arrange.
  • a big one can be on the upper tool Number of independent drive devices and corresponding Barriers are provided what the Possibility creates punch punches at lateral intervals to be arranged from each other, which correspond to their diameter. This enables continuous rows of holes to be punched become. To keep these punches apart bring about from each other, they can advantageously be arranged in a zigzag row.
  • the punch stamp then interact with pressure members, each about as wide as a punch or if several Pressure elements should serve a larger stamp, are narrower than a punch.
  • the locking members interacting with the pressure members are related to the direction of adjustment of the punch For example, transversely to the direction of adjustment of the punch slidably mounted. In addition, they are in the Adjustment direction guided at least so that it can not tip sideways on its flat side.
  • Embodiment are the locking members and the adjustable Tool part in separable part tools arranged, for example, in cassettes.
  • stamps i.e. different punch diameters, Stamp forms, stamp numbers changed without the unit with the bolts and the drives switch.
  • a press 1 is cut and schematically illustrated.
  • the press is used to punch variable hole patterns in a workpiece 2, the For example, is formed by a sheet that is not one further illustrated transport device in the transport direction T gradually through a tool 3 the Press 1 is moved.
  • the tool 3 has an upper tool 4 and a lower tool 5. While the lower tool 5 is fixedly mounted on a press table 6, is the upper tool 4 on a not illustrated Press ram held by a drive device an indicated by an arrow 7 back and forth experienced working movement. As indicated by arrow 7 indicated, the working direction (arrow 7) of the Press ram and the upper tool 4 essentially perpendicular to the transport direction T of the workpiece 2.
  • the upper tool 4 has two rows of punches 11, 11 'with which the desired hole pattern in the Workpiece 2 can be punched. Because of the construction of the upper tool 4, reference is made to FIG. 2.
  • the top tool 4 is vertical and transverse to the direction of transport T directed plane E is formed symmetrically. The following description of the left-hand side in FIG Area or section of the upper tool 4 therefore applies accordingly to the right-hand section. Its parts are only for distinction with otherwise the same reference numerals as the left part the upper tool 4 provided.
  • the stamp 11 is in a stamp holder plate 14 displaceable with little play with respect to its axial direction 15 stored.
  • the stamp holder plate 14 is in corresponding Sidewalls 16, 16 'of the upper tool 4 held. For this purpose, these have an approximately U-shaped cross section Recording groove 17, 17 'on, which is transverse to the direction of transport T and horizontally across the entire width of the extends each cheek.
  • the stamp holder plate 14 has corresponding ribs 18, 18 ', which in the grooves 17, 17 'grab and store the stamp holder plate 14.
  • stamp 11 in a corresponding receiving hole the stamp holder plate 14 sits instructs a head at its upper end facing away from the workpiece 2 21, whose diameter is slightly larger than that remaining punch 11.
  • the head 21 forms with a corresponding ring shoulder 22 of the receiving bore Slings. Is the head 21 on the ring shoulder 22 on, the punch 11 has its most advanced Position reached. This is his working or Active position.
  • the intermediate piece 24 has, as in FIG. 4 shows a rectangular cross-section in plan view on, its narrow sides (vertical) with guide rails 25, 26 are provided. This engages in corresponding Guide grooves 27, 28 in the cheek 16 and formed opposite in a guide part 29 are.
  • the individual intermediate pieces 24 of each punch 11 are identical to one another and, for example, by Get cut to length from a suitable profile material. They are in the guide grooves 27, 28 with little play led and have a distance of a few from each other tenths of a millimeter.
  • the punch 11 With her essentially plan bottom 31 are the pressure members 24 with the end faces of the heads 21 of the punch 11 in the middle of the plant.
  • the punch 11 is on an approximately straight one or, as can be seen from FIG. 4, zigzag-shaped row 32 arranged.
  • the diameter the heads 21 of the punch 11 correspond approximately to that Thickness of pressure members 24.
  • the pressure members 24 by spring means, such as two helical springs 34, 35 biased towards the punch 11. Press with it the coil springs 34, 35 the pressure members 24 after below that the punch 11 is resilient to its working position are biased towards.
  • spring means such as two helical springs 34, 35 biased towards the punch 11. Press with it the coil springs 34, 35 the pressure members 24 after below that the punch 11 is resilient to its working position are biased towards.
  • the pressure members 24 with a counter abutment surface 36 provided by several in the present example is interrupted by three transverse recesses 37.
  • the counter abutment surface 36 is thus by four surface areas 36a, 36b, 36c, 36d are formed, each essentially are plan and on a common level lie.
  • the gaps between the surface areas 36a, 36b, 36c, 36d are each transverse to the longitudinal direction 15 measured about the same size as the surface areas or slightly larger than this.
  • the depth of the gaps or recesses is at least as large as the stroke of the Punch 11 between its active position and its Passive position in which he stands, if that Upper tool 4 has reached its bottom dead center position and it does not deform the workpiece.
  • the contact surface areas 36a to 36d correspondingly at end faces Fingers trained. Are between your fingers Gaps formed that are at least as big as fingers.
  • a locking member 41 is assigned to the pressure member 24, which is essentially cuboid. On its top, that of the punch 11 and the Pressure member 24 rests, it lies flat on a corresponding one Sliding surface 42 of the upper tool 4. It is therefore immovable in the direction of 15. It also works with lateral ribs 43, 44 in the vertical grooves 27, 28 one and is so far led that it does not come from the disengage from the longitudinal axis 15 predetermined axis direction can.
  • the locking member 42 is on its underside a triple interrupted contact surface 45. Between the partial surfaces 45a to 45d thus formed Contact surface 45 spaces are formed so that the contact surface areas 45a to 45d on the front Ends of corresponding fingers as flat surfaces or slightly spherical or curved surfaces are formed.
  • the distances between the surface areas 45a to 45d are in turn dimensioned such that the end faces 36a to 36d fingers of the pressure member 24 in the gaps Drive in between the contact surface areas 45a to 45d can.
  • the depth is the adjustment path of the punch 11 sized accordingly.
  • the side ribs 43, 44 and the width of the Locking member 42 are dimensioned so that this in one Figure 2 by an arrow 47 adjustment direction can be pushed back and forth at least by a width are that of the extent measured in this direction each area corresponds to 45a to 45d.
  • the surface areas To this extent, 45a to 45d are among themselves chosen the same size.
  • each locking member 42 is in each case connected to a drive device 51.
  • Magnetic coil 52 which is arranged in a fixed manner in the side cheek 16 is.
  • the magnet coil 52 is axially displaceable an anchor 53 connected to the locking member 42, which is drawn into the coil 42 when it is excited becomes. If the armature is polarized accordingly, it can be reverse excitation can be pushed out of the coil.
  • a spring means such as a Tension spring or a spring tongue can be provided between the upper tool 4 and the locking member 42 acts. If necessary, a fluid drive can also be used.
  • this is preferably with a bore 54 aligned with the armature 53, in which the armature 53 engages on the magnetic coil 52 side.
  • a guide pin 56 can be arranged on the opposite side be that slides in a bore of the guide member 29 or sits in this and can slide in the bore 54.
  • This enables the outer diameter of the individual drive devices 51a to 51c, which up to is three times the corresponding thickness of the Locking members 42. If there is a further lack of space, Drive devices not only triple, but also be staggered four or more times. It will possible that existing on the side of the locking members 42 Exploit volume so that the drive devices 51st can be completely accommodated in the upper tool 4. As a result, a sheet metal holder can be guided past the upper tool 4 become.
  • the punch 11, 11 'of the two rows 32, 32' are transverse to the direction of transport T against each other offset half a punch distance. With that leaves as will be seen later, not only a variable hole pattern, but if necessary also a achieve a continuous cut on the workpiece 2.
  • a single punch 11 is cut out illustrated.
  • the punch 11 is a essentially cylindrical or otherwise in cross section trained rod with its head 21 in the Stamp holder plate 14 is mounted. At its bottom The punch has a free end essentially aligned orthogonally to its longitudinal central axis 15 End surface 61, which is surrounded by a cutting edge 62 is.
  • the end surface 61 is approximately in the middle of a blind bore 63 interrupted, in which a rubber buffer 64 sits. This is made of a wear and abrasion resistant elastic Material formed from the blind bore 63rd preferably protrudes in a curvature.
  • the elasticity and the size of the rubber buffer 64 are such that the cutting edge 62 of the punch 11 the workpiece 2 not touched when the punch 11 is not in his Working position is locked. However, it is in this locked, the rubber buffer 64 can by the force of Punch 11 can be easily overcome, so that Cutting edge 62 penetrates the workpiece 2 unhindered.
  • the one from that Rubber buffer 64 is applied elastic force, however larger than that for braking the pressure member 24 and the Hole punch 11 needed to overcome the inertia Force plus that of the coil springs 34, 35 exerted force. So neither the cutting edge gets 62 another section or part of the punch 11 in engagement with the workpiece 2.
  • the punch 11 presses near the bottom dead center of the upper tool 4 the pressure member 24 briefly upwards, so that his fingers in the interstices of the locking member 42 drive.
  • the coil springs 34, 35 relax again and the pressure member 24 sets with its lower flat surface on the punch holder plate 14.
  • the head 21 of the relevant punch 24 is now on the ring shoulder 22 on and is thus taken up again.
  • the same applies to the active punch 11, 11 ' by placing the head 21 on the annular shoulder 22 the holes they punched are pulled out.
  • any hole patterns can be because of the overlap the punch in the transport direction T and at the corresponding Control of a feed with half steps also produce larger through openings, whose outer boundary is programmable.
  • the programming can, for example, by reading a template using a scanner and a corresponding control unit.
  • each tool part 11 each assigned a locking member 42
  • the Locking member 42 has a locking and a release position.
  • a contact surface 45 is provided on the locking member 42, which are divided into surface areas 45a to 45d is. Are between the surface areas 45a to 45d Recesses formed. The essentially flat and if necessary, slightly beveled contact surfaces at their edges 45a to 45d thus form the end faces of one Toothing.
  • a complementary toothing is on that Tool part 11 or one in connection with this standing pressure member 24 formed. The required Stroke of the locking element when it is transferred from Sperrin Release position and vice versa can thus on the Teeth width can be limited.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Presses And Accessory Devices Thereof (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Press Drives And Press Lines (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
EP99110928A 1998-06-10 1999-06-04 Presse zur Herstellung variabler Bearbeitungsmuster Expired - Lifetime EP0963801B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19825842A DE19825842A1 (de) 1998-06-10 1998-06-10 Presse zur Herstellung variabler Bearbeitungsmuster
DE19825842 1998-06-10

Publications (3)

Publication Number Publication Date
EP0963801A2 EP0963801A2 (de) 1999-12-15
EP0963801A3 EP0963801A3 (de) 2001-04-18
EP0963801B1 true EP0963801B1 (de) 2004-02-25

Family

ID=7870463

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99110928A Expired - Lifetime EP0963801B1 (de) 1998-06-10 1999-06-04 Presse zur Herstellung variabler Bearbeitungsmuster

Country Status (4)

Country Link
EP (1) EP0963801B1 (cs)
AT (1) ATE260155T1 (cs)
CZ (1) CZ203099A3 (cs)
DE (2) DE19825842A1 (cs)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12121952B2 (en) 2019-02-01 2024-10-22 WISTA Werkzeugfertigungs-GmbH Punching/perforating machine

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10328776B3 (de) 2003-06-25 2005-01-27 Groz-Beckert Kg Stanzvorrichtung für flächige Gegenstände
US9186807B2 (en) * 2012-02-06 2015-11-17 Fiskars Brands, Inc. Device for forming a pattern in a sheet material
CN110027352B (zh) * 2019-05-22 2024-04-12 温州岑泰机械有限公司 一种成型盒压纹机的新型压纹机构
CN118045905B (zh) * 2024-03-11 2024-07-19 江苏蔚联精密科技有限公司 一种具有变形控制功能的散热片冲压装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2741537A1 (de) * 1977-09-15 1979-03-22 Cis Metalform Masch Verfahren zur herstellung von teilen
FR2407765A1 (fr) * 1977-11-08 1979-06-01 Thomson Brandt Procede et dispositif de fabrication de toles perforees notamment pour viroles de tambours de machines a laver
DE3935498C3 (de) * 1989-10-25 1997-05-07 Innovations Projekte Ag Schaltbare Presseinrichtung zum Bearbeiten von Werkstücken
JPH0813387B2 (ja) * 1990-11-08 1996-02-14 株式会社三協マニテック パンチング板打抜き加工装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12121952B2 (en) 2019-02-01 2024-10-22 WISTA Werkzeugfertigungs-GmbH Punching/perforating machine

Also Published As

Publication number Publication date
DE59908618D1 (de) 2004-04-01
EP0963801A2 (de) 1999-12-15
CZ203099A3 (cs) 1999-12-15
EP0963801A3 (de) 2001-04-18
DE19825842A1 (de) 1999-12-16
ATE260155T1 (de) 2004-03-15

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