EP3115122A1 - Dispositif et procede destines a enlever/ejecter une grille d'estampillage/piece de formage interieure et a ejecter une partie decoupee dans une presse pour decoupage fin - Google Patents

Dispositif et procede destines a enlever/ejecter une grille d'estampillage/piece de formage interieure et a ejecter une partie decoupee dans une presse pour decoupage fin Download PDF

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Publication number
EP3115122A1
EP3115122A1 EP15002020.4A EP15002020A EP3115122A1 EP 3115122 A1 EP3115122 A1 EP 3115122A1 EP 15002020 A EP15002020 A EP 15002020A EP 3115122 A1 EP3115122 A1 EP 3115122A1
Authority
EP
European Patent Office
Prior art keywords
piston
pressure
stripping
ejection
counter
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
EP15002020.4A
Other languages
German (de)
English (en)
Other versions
EP3115122B1 (fr
Inventor
Hans-Ruedi Honegger
Andreas Walther
Alex Wehrli
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.)
Feintool International Holding AG
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Feintool International Holding AG
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 Feintool International Holding AG filed Critical Feintool International Holding AG
Priority to ES15002020.4T priority Critical patent/ES2665767T3/es
Priority to EP15002020.4A priority patent/EP3115122B1/fr
Priority to JP2016133067A priority patent/JP6931271B2/ja
Priority to KR1020160084651A priority patent/KR102349809B1/ko
Priority to CN201610525205.0A priority patent/CN106334744B/zh
Priority to US15/203,517 priority patent/US10682782B2/en
Publication of EP3115122A1 publication Critical patent/EP3115122A1/fr
Application granted granted Critical
Publication of EP3115122B1 publication Critical patent/EP3115122B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/18—Means for removing cut-out material or waste
    • B26D7/1818—Means for removing cut-out material or waste by pushing out
    • 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
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • 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
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/14—Dies
    • 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
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/16—Shoulder or burr prevention, e.g. fine-blanking
    • 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
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/20—Applications of drives for reducing noise or wear
    • 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
    • B21D45/00—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
    • B21D45/003—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass in punching machines or punching tools
    • 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
    • B21D45/00—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
    • B21D45/02—Ejecting devices
    • 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
    • B21D45/00—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
    • B21D45/02—Ejecting devices
    • B21D45/04—Ejecting devices interrelated with motion of tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/32—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure
    • B30B1/36—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure having telescoping plungers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/16—Control arrangements for fluid-driven presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/16—Control arrangements for fluid-driven presses
    • B30B15/161—Control arrangements for fluid-driven presses controlling the ram speed and ram pressure, e.g. fast approach speed at low pressure, low pressing speed at high pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/32—Discharging presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/18—Means for removing cut-out material or waste
    • B26D2007/189—Mounting blanking, stripping and break-out tools

Definitions

  • the invention relates to a device for stripping a stamped grid, ejecting an inner molding and ejecting a cutting part in a fine blanking press, with a arranged in the top ring cylinder cylinder in which a pressure chamber with hydraulic fluid acted upon annular toothed piston for generating a force acting on a serrated annular tooth force is performed in the Base arranged master cylinder, in which via a pressure chamber with hydraulic fluid acted upon, a lifting movement in the direction Hubachse exporting and a table top carrying main piston / plunger is guided with a counter-pressure piston acting on counter-piston to generate a counterforce and a hydraulic system for Supplying the arranged in the top and bottom pressure chambers with the adjusted to a predetermined working pressure by a central control hydraulic fluid.
  • the invention further relates to a method for stripping a punched grid from the cutting punch, ejecting an inner mold and ejecting a cutting part from the cutting plate of a tool in a fine blanking press with a arranged in the foot upwardly moving main piston, in the first with a arranged in the head of the press ring-toothed piston over Ringtooth pin acting on a leading or serrated plate ring tooth force for pressing the ring teeth in the cutting material and with a counter-piston arranged in the foot generates a counter-holding counter-holding force, then cutting the hydraulic fluid from the pressure chambers of the Ringzacken- or counter-holding piston at an adjustable pressure displaced and after completion of cutting the pressure chamber of the annular toothed piston in the head piece and the pressure chamber of the counter-holding piston in the foot piece with a hydraulic fluid adjusted to a predetermined working pressure d acted upon by a hydraulic system and by a central control to a predetermined, the punched grid stripping and the inner mold part ejecting
  • the fineblanking tool comprises an upper part and a lower part.
  • the upper part includes at least one guide or ring plate plate, which is acted upon by pressure pins with a serrated piston of a fine cutting press Ringzackenkraft, guided in the guide or ring serrated cutting punch for cutting a cutting part of the cutting material and an ejector for ejecting an inner molding from the cutting punch.
  • the lower part contains a cutting plate or die, an ejector guided in the cutting punch, which is acted upon by pressure pins with a counterforce produced by a counter-holding piston of the fineblanking press and counteracting the cutting punch.
  • the cutting material is clamped between the guide plate and the cutting plate.
  • the ring-tooth force located in the leadership or ring serrated annular teeth in the cutting material is pressed by the ring-tooth force.
  • this force is displaced by the high-speed main piston, which strips the punched grid from the cutting punch after the end of the cutting and ejects the inner mold into the opened tool cavity.
  • the counterforce generated by the counter-holding piston presses against the cutting punch and is overcome by the cutting force.
  • this force throws the pressed into the insert cutting part in the tool room (" Forming and fineblanking, manual for procedures, materials, partial design ", P. 141-153, publishing house Hallwag AG, 1997 ).
  • the fineblanking process requires special triple-acting presses, which basically work from the bottom up and a controlled control of the cutting process with the Enable auxiliary functions for the ring point, counterholder and ejector.
  • the ring-tooth force and counter-holding force are generated hydraulically and the cutting force is generated mechanically or hydraulically.
  • piston assemblies that are used in presses for driving or pressurizing.
  • a triple-acting hydraulic press which has a working piston, an annular piston surrounding this, an opposed piston and located between the working piston and the ring piston, closable by means of a pressure regulating valve gap.
  • the DE 1 279 622 A1 is a fine blanking press with a cutting piston, a sheet metal workpiece pressing on the press table pressing piston and a part to be punched out of the workpiece supporting counter-pressure piston described, the cutting piston is resiliently guided in the plunger.
  • a press in particular for fine blanking, with two ram systems, to each of which a tool half is fastened.
  • At least one ram system consists of two independently operable piston systems, each of which can optionally be fixed individually to the press frame.
  • DE 2 218 476 A1 and DE 2 264 429 A1 it is a fine blanking press with two rigidly interconnected frame bodies, to which two serving for clamping two tool parts, mounted on a hydraulic path axially towards each other and away from each other movable table body.
  • a cylinder space is provided, in which two coaxial, with respect to each other movable pistons are arranged, of which the first is connected to a piston rod and the second surrounds this piston rod and forms part of the first frame body displaceably mounted on the first frame body.
  • the second piston has an internal thread and is screwed onto an externally threaded bush, so that the axial position of the second piston is adjustable.
  • the work stamp assembly includes a primary punch and a secondary punch that are substantially coaxially disposed and axially movable relative to each other, wherein the primary punch is slidable axially in an axial bore of the secondary punch.
  • a fine blanking press with hydraulically or mechanically driven ram with at least one each known a hydraulic Ringzacken- and counter-holding cylinder.
  • the ring gear cylinder and the counter-holding cylinder are arranged in a support cylinder, which is held in constant contact with pressure pins via connecting elements, wherein the support cylinder at the end of the working stroke pushes the ring-jaw piston in its lower starting position when lifting the work force, so that the pressure pin eject the punched grid.
  • the annular toothed cylinder is housed in a cylinder housing in a traverse, in which a ring-shaped piston is guided, which is held by a piston of the pressure-medium-loaded cylinder in a position which is in constant contact with the pressure pin.
  • the serrated piston acts as the stripping / ejecting element and the Containment piston as the ejection of the cutting part initiating element that perform the stripping / ejecting and ejecting the same effective area as when displacing the ring-jaw piston / counter-holding piston.
  • the displaced during the working stroke volume of the ring-jaw cylinder and counter-holding cylinder is fed to a pressure accumulator.
  • the volume displacement remains dependent on the serrated piston, so that one of the ring-tooth force or counter-holding force is independent Adaptation of the stripping / ejection force and ejector force to the real power requirement is not possible.
  • the force in the ring-jaw cylinder and counter-holding cylinder must always be equal to or greater than the ejection / Auswerferkraft, whereby the applications are limited.
  • the hydraulic circuit is complicated and expensive by the control within the ring-shaped piston.
  • the present invention seeks to provide an apparatus and a method for stripping / ejecting a stamped grid or inner molding and ejecting a cutting part from a tool in a fine blanking press, with which the stripping / ejection force and the ejection force independently from the ring-jaw force and counter-holding force with reduction of the piston mass of the serrated and counter-holding piston, the increase of the stripping / ejection and ejection speed while simultaneously simplifying the hydraulic circuit is adjustable.
  • the solution according to the invention is based on Recognition of performing the stripping of the punched grid, the ejection of the inner mold part and the ejection of the cutting part separately and independently of the function of the Ringzacken- and counter-holding piston.
  • This is achieved in that the annular toothed piston with a stripping / ejection piston and the counter-holding piston with an ejector each in the head and foot piece of a separate annular piston or counter-piston structural unit with independent pressure chambers for the stripping / ejection piston on the one hand and the ejector piston on the other form, wherein the pressure chambers of the stripping / ejection piston and Auswerferkolbens communicate with each other via a first controllable hydraulic circuit of the hydraulic system and the pressure chambers of the ring-toothed piston and counter-holding piston via a second controllable hydraulic circuit.
  • a further preferred embodiment of the device according to the invention provides that the stripping / ejection piston is arranged in a stripping / ejection cylinder separated from the serrated cylinder, which is fastened pressure-tightly and non-positively on the serrated cylinder in the direction of the stroke axis, a piston rod of the stripping - / ejection piston passes through the guided in the serrated cylinder ring-serrated piston center and is fixed to a ring-toothed piston foot-side associated ejection plate so that stripping / ejection piston and serrated piston independently can perform a lifting movement. This ensures that both pistons can be driven independently of each other and hydraulically controlled.
  • the serrated pins are arranged coaxially to the stroke axis in the ring-jaw cylinder and are supported on a serrated piston plate for moving the ring spike, wherein the serrated piston plate surrounds a support body having through holes in which the pressure bolts are arranged to move vertically movable.
  • the stripping / ejection piston can be designed to be double acting according to a further preferred embodiment of the device, which is associated with a first and second pressure chamber in the stripping / ejection cylinder.
  • the stripping / ejection cylinder is pressure-tightly closed by a cover connected to the hydraulic system hydraulic line for pressurizing the first pressure chamber with predetermined pressure from the first hydraulic circuit.
  • the stripping / ejection cylinder is provided in its wall region with a parallel and perpendicular to the stroke axis extending channel for applying the second pressure chamber with hydraulic fluid predetermined pressure from the first hydraulic circuit of the hydraulic system. This ensures that the cylinder space of the stripping / Ejecting cylinder and the serrated cylinder chamber each separately from each other with fluid can be acted upon correspondingly adapted pressure. All of these features also ensure that the scraper-discharge cylinder forms a compact unit with the ring-jaw cylinder or counter-holding cylinder and can be easily and simply connected to the hydraulic system.
  • aelleshaltezylinderraum is formed for the counter-holding piston in which an axially displaceable in the stroke direction ejector piston is arranged, the piston rod penetrates the counter-holding piston in the middle and leads into the separate pressure chamber, by a in Main piston is perpendicular to the stroke axis lying channel with the first hydraulic circuit of the hydraulic system for applying hydraulic fluid predetermined pressure is connected, wherein ejector piston and counter-holding piston can independently perform a lifting movement.
  • the main piston is provided with a parallel and perpendicular to the Hubachse extending channel for acting on the pressure chamber of the counter-holding piston with hydraulic fluid predetermined pressure from the second hydraulic circuit of the hydraulic system.
  • channels for supplying hydraulic fluid predetermined pressure from the hydraulic system are introduced into the foot piece, so that each pressure chamber can be applied separately according to the required pressures, thereby ensuring is that the ejector piston and the counter-holding piston can be controlled independently of each other.
  • the first hydraulic circuit comprises a high-pressure accumulator for the pressure chambers, which is set by the hydraulic system by a cartridge valve to the working pressure of the stripping / ejection piston and the ejector piston, at least one 4/3-way valve assigned to each pressure chamber by the stripping / ejection piston and ejector piston.
  • Proportional valve for switching on and off of the pressure chambers, the proportional valve, a pressure transducer and the proportional valve, a pressure sensor for the control of the cartridge valve are assigned.
  • the second hydraulic circuit comprises at least one plug-in valve connecting the two pressure chambers of serrated and counter-holding pistons and adjusting the working pressure, at least one pressure sensor for actuating the cartridge valve and at least one hydraulic pump unit, the at least one cartridge valve for adjusting the delivery rate, at least one pressure sensor for controlling the cartridge valve and at least one pressure relief valve for pressure limiting and maintaining the delivery flow is assigned.
  • the second hydraulic circuit thus operates independently and independently of the first hydraulic circuit, the cartridge valves are controlled via the pressure transducer from the central control.
  • the object is further achieved by a method in that the stripping / ejection force and the ring-tooth force and the Auswerferkraft and counter-holding force are generated in separate pressure chambers with correspondingly adapted to the stripping / ejection and ejection active surfaces, the pressure chambers for the stripping / Ejection force and the pressure chambers for the serration and counter-holding force with hydraulic fluid preset pressure from the central control in separate hydraulic circuits of the hydraulic system are controlled so that ring-toothed piston and counter-retaining piston the scraper / ejection piston or Auswerfkolben when stripping or Aus finedem lag.
  • the active surfaces in the pressure chambers for stripping / ejection and ejection can be chosen to be the same or different sizes, so that the height of the stripping / ejection force and the ejector force can be set independently of the size of the serrated and counter-holding force.
  • the Fig. 1 shows the working principle of fine blanking in the manufacture of a cutting part 1 with an inner shape in a cutting tool 2, which is composed of an upper part 3 and lower part 4. Between insert 5 of the lower part 4 and the guide or annular serrated plate 6 of the upper part 3, the cutting material 7 is clamped. The annular serration force F R acting on the guide or annular serrated plate 6 via pressure bolts 8 has pressed into the cutting material 7 the annular serrations 9 located in the guide or annular serrated plate 6.
  • the cutting punch 10 which is guided by the guide or annular serrated plate 6, cuts in the position shown with the cutting force F S in the cutting material 7, wherein the cutting punch 10, a counter-holder 11 counteracts the counter force F G , the pressure pin 12 on the counter-holder 11 is applied.
  • the punch 13 is guided in the counter-holder 11 and cuts the inner mold against the cutting force F S of the cutting punch 10 in the cutting material 7 a.
  • the ejector 14 acts as a counter-holder of the punch 13th
  • the stripping / ejection process of the lead frame 15 and the cutting part 1 is shown schematically. Even before the start of cutting, the ring tooth 9 is pressed into the cutting material 7 outside the cutting line.
  • the force F R is displaced by the high-speed main piston / plunger of fineblanking press and stripped by the stripping force F RA after cutting end with open tool punched grid 15 from the cutting punch 10 and ejected the inner mold into the tool room.
  • the counterforce F G acts at the beginning of cutting immediately opposite the cutting punch 10 and is overcome by the cutting force F S.
  • the ejector force F GA ejects the cutting part 1 from the cutting opening of the cutting plate 5.
  • the pressure pin 8 for the lead or ring serrated plate. 6 and the pressure pins 12 for the anvil 11 are hydraulically actuated.
  • the Fig. 3 shows the head 16 of a hydraulic fine blanking press, not shown.
  • a receiving space 17 formed as a core body 18 ring-shaped cylinder 19 with a US underside of the head piece 16 facing hole bottom 20, one of the top OS of the head piece 16 facing tubular neck 21 and a hole bottom 20th associated flange 22 is arranged.
  • FIG. 4 shows in the butt joint a stripping / ejection cylinder 25 placed coaxially to the lifting axis HU, which closes the formed in the core body 18 serrated cylinder chamber 26 pressure-tight by screwing.
  • the stripping / ejection cylinder 26 and the core body 18 are secured against rotation by means of groove pieces 27 on the head piece 16.
  • a cylinder space 28 is formed, which is closed by a pressure-tight screwed lid 29 and a double-acting stripping / ejection piston 30 receives.
  • the stripping / ejection piston 30 divides the cylinder chamber 28 into a first pressure chamber 31a associated with one side of the stripping / ejection piston 30 and a second pressure chamber 31b associated with the other side of the stripping / ejection piston 30.
  • the cover 29 has in the middle a supply opening 32 for the connection of a hydraulic line 33 of the hydraulic system 34 for acting on the first pressure chamber 31a with hydraulic fluid.
  • the second pressure chamber 31 b is parallel to and in the wall region 35 of the stripping / ejection cylinder 25 connected perpendicular to the lifting axis HU formed channel 36 and the hydraulic line 33a to the hydraulic system 34 for acting on hydraulic fluid predetermined pressure (see Fig. 4 ).
  • the stripping / ejection piston 30 is connected to a piston rod 37 which is guided on the lifting axis HU by a ring-toothed piston 38 guided in the serrated cylinder chamber 26 and carries an ejection plate 39 which rests on the perforated bottom 20 of the core body 18.
  • the serrated piston 38 in the serrated cylinder chamber 26 is associated with a pressure chamber 40 which is connected by a further in the wall portion 35 of the stripping / ejection cylinder 25 arranged channel 41 via the hydraulic line 33b with the hydraulic system 34 (see Fig. 5 ).
  • the annular serrated piston 38 associated annular toothed pin 43 and pressure pin 44 are guided in alignment with the lifting axis HU vertically displaceable.
  • the support body 47 has coaxial to the lifting axis HU through holes 48 for the pressure pin 44.
  • In the support plate 49 there are through holes 51, in which pressure pins 52a and 52b are guided, wherein the pressure pin 52a are assigned to the driven through the support body 47 pressure pin 44 and the pressure pin 52b the serration 43.
  • the pressure pins 52a and 52b, the piston plate 45, the pressure pins 44, the serration pins 93, the ejection plate 39, the piston rod 37, the stripping / ejection piston 30 and the serrated piston 38 move synchronously upwards, ie in the direction of the head piece 4.
  • the hydraulic fluid in the pressure chamber 40 of the serrated piston 38 and in the pressure chamber 31 a of the stripping / ejection piston 30 is displaced.
  • the stripping / ejection piston 30 is activated and the stripping process begins, ie the working space 31a is pressurized by hydraulic fluid.
  • the stripping / ejection piston 30 presses the ejection plate 39 and thus all the pressure pins 52a, 52b, serration pins 93 and 44 and the piston plate 45 synchronously downwards, ie in the direction of foot 53.
  • the said pressure pin press on the pressure pin not shown in the tool, the strip the punched grid from the cutting punch or eject the inner molding.
  • the serrated piston 38 is tracked by pressurizing the working chamber 40 with hydraulic fluid in parallel or with a time delay and at a lower speed the stripping / ejection piston 30.
  • the Fig. 6 shows the foot piece 53 in a sectional view.
  • a master cylinder space 54 is formed, whose axis HA lies on the lifting axis HU of the fineblanking press and accommodates the double-acting main piston 55.
  • the main piston 55 has a cylindrical shaft 56 which discusscale perpendicular from its axis HA projecting work surfaces 57 a and 57 b, which divide the master cylinder chamber 58 into two pressure chambers 59 a and 59 b with low lifting height, so that the foot 53 a low construction height has.
  • the pressure chambers 59a and 59b are each connected to the hydraulic system 34 through a port 60a and 60b via respective ports and hydraulic lines 61.
  • the master cylinder space 58 and thus the pressure chamber 59a is pressure-tightly sealed by a cover 62.
  • the main piston 55 performs a corresponding stroke movement between top dead center OT and bottom dead center UT.
  • a Jacobhaltezylinderraum 63 is formed, in which a counter-holding piston 64 and an ejector piston 65 is received, which is guided with its piston rod 66 centrally through the counter-holding piston 64 and ends with the ejection plate 39 in a pressure chamber 68 for the piston rod 66.
  • the counter-holding piston 64 divides a pressure chamber 69 in the cylinder chamber 63 of the main piston 55.
  • the pressure chamber 68 for the ejector piston 65 and the pressure chamber 69 for the counter-holding piston 64 are formed by in the shaft 56 perpendicular to the axis HA introduced separate channels 70a and 70b formed in the shaft 56 Verteil VogelsEnglishept 71 and channels 72a and 72b in the foot 53 with the hydraulic line 33 of the Hydraulic system 34 connected.
  • FIG. 7 is taken to the arrangement and attachment of the table top 73 on the main piston 55 reference.
  • the table top 73 rests with its underside on impact on the shaft 56 of the main piston 55 and has a projecting cylindrically shaped bottom portion 74 whose diameter is matched to the diameter of the shaft 56 of the main piston 55.
  • the bottom portion 74 of the table top 73 is coaxial with the Hubachse HU arranged holes 75 provided.
  • Counterhold pins 76 are guided in the bores 75 and are supported on a piston plate 78 which is arranged in a recess 77 above the bottom region 74 and which encloses a centrally arranged, cylindrical disk-shaped support body 79.
  • the support body 79 has coaxial with the lifting axis HU through holes 80 for pressure pin 81, which are passed through the holes 80 of the support body 79.
  • a support plate 82 in a relation to the recess 77 stepwise outwardly offset recess 83, wherein the support plate 82 is arranged plane-parallel to the piston plate 78.
  • In the support plate 82 are through holes 84a and 84b, wherein in the through holes 84a thrust pins 85 are guided, which are assigned to the counter-holding pin 76 and the through-holes 84b passed through the support body 79 pressure pin 81.
  • the pressure pins 81 and 85, the piston plate 78, the counter-holding pins 76, the ejection plate 39, the piston rod 66, the ejector piston 65 and the counter-retaining piston 64 move synchronously down during the cutting process.
  • the hydraulic fluid in the pressure chamber 68 of the ejector piston 65 and in the pressure chamber 69 of the counter-holding piston 64 is displaced.
  • the ejector piston 65 is activated and the ejection process of the cutting part cut into the cutting plate begins, ie the pressure chamber 68 is pressurized with hydraulic fluid.
  • the Auswerfplatte 39 pushes all the pressure pins 76, 81 and 85 and the piston plate 78 synchronously upward.
  • the mentioned pressure pins 81 and 85 do not press on shown pressure pin in the tool that eject the cutting part from the cutting opening of the cutting plate in the tool room.
  • the counter-piston 64 is tracked by pressurization of the pressure chamber 69 with hydraulic fluid in parallel or with a time delay and at a lower speed.
  • the course of the method according to the invention is based on the Fig. 8 described that shows the circuit of the pressure chambers 31a and 31b of the stripping / ejection piston 30 with the pressure chamber 68 of the ejector piston 65 and the pressure chamber 40 of the ring-toothed piston 38 with the pressure chamber 69 of the counter-holding piston 64 in the first hydraulic circuit 92 and second hydraulic circuit 93 extracts.
  • the pressure chambers 31a and 31b of the stripping / ejection piston 30 and the pressure chamber 68 of the Auswerfkolbens 65 in the first hydraulic circuit 92 are supplied via a common high pressure accumulator 86 for hydraulic fluid, which is controlled by a central controller 87 logic cartridge valve 88, which with the hydraulic system 34th is connected via the hydraulic line 33 and is adjusted to a desired, to the stripping / ejection force F RA and the ejector force F GA adjusted pressure level.
  • each a pressure transducer 91a and 91b in the hydraulic line 33 for Control of the 4/3-way proportional valves 89 and 90 is assigned by the central controller 87.
  • the second hydraulic circuit 93 comprises at least one of the pressure chamber 40 of the ring-necked piston 38 and the pressure chamber 69 of the counter-holding piston 64 associated and the working pressure adjusting cartridge 94, at least one pressure transducer 95 for pressure detection in the second hydraulic circuit 93 and passing the pressure value to the central controller 87 for the control of the cartridge valve 94 and at least one hydraulic pump unit 96.
  • the hydraulic pump unit 96 is assigned at least one installation valve 97 for setting the delivery rate, at least one pressure limiting valve 98 for limiting the pressure of the delivery flow and at least one pressure sensor 95 for pressure detection and transfer of the pressure values to the central controller 87 for actuating the installation valve 94.
  • the pressure chambers 31a, 31b and 68 of the first hydraulic circuit 92 and the pressure chambers 40 and 69 of the second hydraulic circuit thus constitute separate control circuits which are separated as a function of the plunger position by the central control via the cartridge valve 88 and the 4/3-way proportional valves 89th and 90, on the one hand, and the cartridge valve 94 and the hydraulic pump unit 96, on the other hand.
  • the hydraulic circuit 92 can also feed the pressure chamber 90 from the reservoir 86 and the hydraulic circuit 93 from the pump the pressure chamber 31a.
EP15002020.4A 2015-07-06 2015-07-06 Dispositif et procede destines a enlever/ejecter une grille d'estampillage/piece de formage interieure et a ejecter une partie decoupee dans une presse pour decoupage fin Active EP3115122B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
ES15002020.4T ES2665767T3 (es) 2015-07-06 2015-07-06 Equipo y procedimiento para retirar/expulsar una retícula de estampado/pieza conformada interiormente y eyección de una pieza cortada en una prensa de corte de precisión
EP15002020.4A EP3115122B1 (fr) 2015-07-06 2015-07-06 Dispositif et procede destines a enlever/ejecter une grille d'estampillage/piece de formage interieure et a ejecter une partie decoupee dans une presse pour decoupage fin
JP2016133067A JP6931271B2 (ja) 2015-07-06 2016-07-05 精密打抜プレス内において打抜スクラップ／内側形状部分を離脱させ／取外し、切断部品をイジェクトするための装置及び方法
KR1020160084651A KR102349809B1 (ko) 2015-07-06 2016-07-05 정밀 블랭킹 프레스에서 펀칭된 그리드/내부적으로 형성된 부분의 스트리핑 푸싱 및 블랭킹된 부분의 방출 장치 및 방법
CN201610525205.0A CN106334744B (zh) 2015-07-06 2016-07-05 在精冲压机中刮削冲裁栅条、推顶内模件和顶出冲裁部件的装置和方法
US15/203,517 US10682782B2 (en) 2015-07-06 2016-07-06 Apparatus and method for stripping away/pushing out a punched grid/internally formed part and ejecting a blanked part in a precision blanking press

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15002020.4A EP3115122B1 (fr) 2015-07-06 2015-07-06 Dispositif et procede destines a enlever/ejecter une grille d'estampillage/piece de formage interieure et a ejecter une partie decoupee dans une presse pour decoupage fin

Publications (2)

Publication Number Publication Date
EP3115122A1 true EP3115122A1 (fr) 2017-01-11
EP3115122B1 EP3115122B1 (fr) 2018-01-17

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EP15002020.4A Active EP3115122B1 (fr) 2015-07-06 2015-07-06 Dispositif et procede destines a enlever/ejecter une grille d'estampillage/piece de formage interieure et a ejecter une partie decoupee dans une presse pour decoupage fin

Country Status (6)

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US (1) US10682782B2 (fr)
EP (1) EP3115122B1 (fr)
JP (1) JP6931271B2 (fr)
KR (1) KR102349809B1 (fr)
CN (1) CN106334744B (fr)
ES (1) ES2665767T3 (fr)

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CN114472671A (zh) * 2021-12-29 2022-05-13 宁波敏实汽车零部件技术研发有限公司 一种可移动式冲切吞吐料机构

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JP6936128B2 (ja) * 2017-12-08 2021-09-15 トヨタ自動車株式会社 裁断装置およびシート材の製造方法
DK3725502T3 (da) * 2019-04-18 2023-05-22 Lapmaster Wolters Gmbh Fremgangsmåde til drift af et finstansesystem
CN110695184B (zh) * 2019-10-25 2020-07-03 徐州瑞益晟机械有限公司 一种可减少工件形变冲裁模具设备
CN110788910B (zh) * 2019-11-06 2021-08-27 无锡品知信息科技有限公司 一种切片机用刀片收纳装置
IT202100023789A1 (it) * 2021-09-15 2023-03-15 Util Ind S P A Pressa multifunzione per la realizzazione di particolari metallici

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CN107598006B (zh) * 2017-10-24 2023-08-04 山西新环粉末冶金有限公司 一种具备成品收集功能的活塞阀线压型机
CN114472671A (zh) * 2021-12-29 2022-05-13 宁波敏实汽车零部件技术研发有限公司 一种可移动式冲切吞吐料机构
CN114472671B (zh) * 2021-12-29 2024-02-23 宁波敏实汽车零部件技术研发有限公司 一种可移动式冲切吞吐料机构

Also Published As

Publication number Publication date
CN106334744A (zh) 2017-01-18
ES2665767T3 (es) 2018-04-27
US10682782B2 (en) 2020-06-16
KR20170005769A (ko) 2017-01-16
JP6931271B2 (ja) 2021-09-01
CN106334744B (zh) 2019-10-01
EP3115122B1 (fr) 2018-01-17
KR102349809B1 (ko) 2022-01-11
US20170008186A1 (en) 2017-01-12
JP2017013134A (ja) 2017-01-19

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