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EP0366108A2 - Dispositif pour avancer pas à pas une bande - Google Patents

Dispositif pour avancer pas à pas une bande Download PDF

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Publication number
EP0366108A2
EP0366108A2 EP89119812A EP89119812A EP0366108A2 EP 0366108 A2 EP0366108 A2 EP 0366108A2 EP 89119812 A EP89119812 A EP 89119812A EP 89119812 A EP89119812 A EP 89119812A EP 0366108 A2 EP0366108 A2 EP 0366108A2
Authority
EP
European Patent Office
Prior art keywords
rocker
feed
press roller
roller
axis
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
EP89119812A
Other languages
German (de)
English (en)
Other versions
EP0366108A3 (en
EP0366108B1 (fr
Inventor
Helmut Messner
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.)
Bruderer AG
Original Assignee
Bruderer 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 Bruderer AG filed Critical Bruderer AG
Publication of EP0366108A2 publication Critical patent/EP0366108A2/fr
Publication of EP0366108A3 publication Critical patent/EP0366108A3/de
Application granted granted Critical
Publication of EP0366108B1 publication Critical patent/EP0366108B1/fr
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
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/08—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by rollers
    • B21D43/09—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by rollers by one or more pairs of rollers for feeding sheet or strip material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/15—Intermittent grip type mechanical movement
    • Y10T74/1526—Oscillation or reciprocation to intermittent unidirectional motion
    • Y10T74/1532—Rack actuator
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/15—Intermittent grip type mechanical movement
    • Y10T74/1558—Grip units and features
    • Y10T74/1565—Gripper releasing devices
    • Y10T74/1576—Holding pawl lifter

Definitions

  • the present invention relates to a device for the step-by-step advancement of a band-shaped workpiece, with a press roller intended for the periodic application of pressure on the workpiece, which is rotatably mounted in a rocker at a point between the ends thereof, and an oscillating driven feed element which interacts with the press roller, which press roller and which feed element are intended to receive the band-shaped workpiece between them, and with a locking device which is intended to briefly press the band-shaped workpiece against a stationary member between respective advancing steps in order to lock it.
  • US Pat. No. 3,758,011 and US Pat. No. 3,784,075 disclose a device of the type mentioned at the outset which contains two counter-rotating, oscillating feed rollers which are intended to hold the workpiece between them and which alternate at a time the reversal of their direction of rotation against each other in a feed position and away from each other in an idle position, with a holding device for the workpiece is present, which can be switched synchronously with the movement of the feed rollers from their feed to the idle position and from their idle to the feed position is.
  • the This known device requires a special device by means of which the individual working parts are adjusted depending on the strip to be processed, which strip thickness adjustment obviously requires a downtime of the machine and additional parts of the device which are worn during operation.
  • the invention seeks to remedy this.
  • the invention as characterized in the claims, achieves the object of providing a device for the step-by-step advancement of a strip-shaped workpiece, in which no additional working parts for strip thickness adjustment are required, in that the rocker and the support arms are mounted in this way via springs, link members and pivot points are that it is possible to advance a workpiece regardless of its strip thickness.
  • the advantages achieved by the invention are essentially to be seen in the fact that the device can be built in a space-saving and maintenance-friendly manner. There are also no downtimes for the strip thickness adjustment and no associated device parts that wear out during operation.
  • the device shown in Figures 1 to 3 for gradually advancing band-shaped work pieces, for example sheet metal strips, has a housing 1.
  • An oscillating feed element 2 is mounted in this housing 1, which in the exemplary embodiment shown in FIGS. 1 and 2 is a lower feed roller.
  • a press roll 3 which is adjustably mounted and arranged adjacent to the oscillating feed member 2, ie the lower feed roll.
  • this press roller 3 is designed as a driven upper feed roller.
  • the upper feed roller 3 is rotatably supported at its two ends in a rocker 4, which is supported on the housing 1 on both sides of the upper feed roller 3 by a spring 5 and 6, respectively.
  • the rocker 4 is articulated via a linkage, a rod 7 via a shaft 8 to an arm 9 which carries a rotatably fastened roller 10 at its free end.
  • This roller 10 interacts with a cam member 12 formed on a drive shaft 11.
  • the drive of the drive shaft 11 is coupled to the drive of the feed rollers 2 and 3 and will be described in more detail later.
  • a pair of arms 13, 14 is articulated on the rocker 4 and is articulated on the housing 1 at the opposite end.
  • a pressure ruler 46 is inserted in the pair of arms 13, 14.
  • the rocker 4 At its end supported on the spring 6, the rocker 4 has a pin 15 which passes through an elongated hole 16 of a support member 17.
  • This support member 17 is articulated on a double arm 18, on which the piston rod 19 of a piston 20 acts.
  • a pin 21 is also attached to the piston 20 and cooperates with an adjusting nut 22 which is in screw engagement with the housing 1.
  • a rod 24 mounted in a longitudinally displaceable manner in a housing 23 is attached in a suitable manner, for example by a crank mechanism, reciprocates and drives a lever 26 pivotally connected to it via a pin 25.
  • This lever 26 is guided in a drum-shaped guide member 27 which is mounted in a bearing block 28 with an internal thread.
  • the bearing block 28 is secured against rotation in the housing 23 and penetrated by a screw spindle 29. When the spindle 29 is rotated, the bearing block 28 moves together with the guide member 27, as a result of which the pivot point of the lever 26 can be adjusted.
  • the lever 26 is designed as a hollow profile with internal sliding surfaces 30, in which a sliding block 31 is mounted.
  • This sliding block 31 is penetrated by the pin 32 of a crank 33.
  • This crank 33 is connected to the shaft 34 to be driven in an oscillating manner.
  • the lever 26 is rotated back and forth with the axis of the drum-shaped guide member 27 as the axis of rotation.
  • the pivoting movement of the end of the lever 26 is transmitted to the shaft 34 to be driven via the sliding block 31 and the pin 32 mounted therein via the crank 33, as a result of which this shaft 34 is driven to oscillate.
  • the axis of rotation of the lever 26 can be adjusted, whereby the size of the deflection of the end of the lever 26 carrying the sliding block 31 and thus the amplitude of the oscillating movement of the shaft 34 can be changed.
  • the drum-shaped guide member 27 is rotatably inserted in the bearing block 28 such that the geometric center of the drum-shaped guide member 27 lies on the central axis of the lever 26.
  • the drive shaft 11 carries at one end a gear 35 which meshes with a drive gear 36 driven by a main drive, not shown.
  • a gearwheel 37 is mounted eccentrically in the drive shaft 11. This gearwheel 37 rolls on a ring gear 38 with internal teeth embedded in the housing 1.
  • the gearwheel 37 is fixedly connected to a disk 39, which carries an eccentrically arranged pin 25, which pin is shown both in FIG. 1 and in FIGS. 4-6 and 8.
  • This pin 25 is connected to the lever 26, in which the sliding block 31 is arranged, which is penetrated by the pin 32 of the crank 33, via which the shaft 34 to be driven is driven in an oscillating manner.
  • the bearing block 28, in which the drum-shaped guide member 27 is mounted, is screwed up or down depending on the amplitude to be selected by means of the screw spindle 29.
  • the crank 33 has a toothed segment 40 which meshes with a toothed segment of a disk or rocker 41. The oscillating movement of the disk or rocker 41 is transmitted to the upper feed roller 3 via a suitable clutch 42.
  • the drive shaft 11 has a in this embodiment with her integrally formed cam member 12.
  • the roller 10 executes an oscillating movement, which is transmitted via the arm 9, the shaft 8 lying on the side to the rod 7, which is oscillated accordingly.
  • the rod 7 is articulated on the rocker 4 via the pin 44.
  • the two feed rollers 2 and 3 which now rotate in the feed direction during this period, engage the metal strip 43 and push it forward (to the left according to FIG. 2). Now the rod 7 begins to move upwards.
  • the springs 5 and 6 now cause the rocker 4 to pivot about the axis of the feed roller 3, with the result that the contact ruler 46 is lowered again and the sheet metal strip 43 presses against a stop 45 and thus clamps. After clamping the sheet metal strip 43, the upper feed roller 3 is lifted off.
  • the two feed rollers 2 and 3 no longer act on the sheet metal strip 43 and perform a return movement opposite to the feed direction during the rotation of the drive shaft 11.
  • the feed length is changed by changing the ampli Tude of the oscillation movement of the feed rollers changed, ie as mentioned by moving the bearing block 28 along the screw spindle 29.
  • the rocker 4 is raised above the support member 17 by lowering the piston 20.
  • the pin 44 becomes the pivot point of the rocker 4, which lifts the feed roller 3. Since the pressure ruler 46 is obviously also raised because the arms 13, 14 pivot about their articulation point on the housing 1, a sheet metal strip 43 can be freely inserted.
  • the adjusting nut 22, which determines the basic position of the piston 20 via the pin 21, serves to adjust the height position of the support member 17, in particular the elongated hole 16. It has been said that when the rocker 4 is pivoted, the pin 15 moves in the elongated hole 16.
  • the roller 3 and then the pressure ruler 46 are lifted off the metal strip 43 for a short time, this is exposed for a short time, so that the known catch pins on the respective tool of a punch press can center the metal strip 43.
  • the time span for centering the sheet metal strip 43 can thus be controlled by means of the catch pins.
  • the linkage, ie the rod 7 is articulated on the rocker 4, a pivot axis 47 being present there.
  • the press roller ie here the upper feed roller 3
  • the arms 13, 14 are articulated on the rocker 4, so that there is a pivot axis 49 there.
  • the arms 13, 14 are articulated on the housing 1, thus forming a pivot axis 52 which, in the position of the rocker 4 shown, coincides with the axis of rotation 48 of the upper feed roller 3.
  • the pressure ruler 46 has a pressure surface 51 which is present in the lower tapering region and which defines a longitudinal center plane.
  • This longitudinal central plane 50 intersects the plane which is determined by the axis of rotation 48 of the upper feed roller 3 and the pivot axis 52 of the articulation point of the pivot arms 13, 14 on the rocker 4, along a section line 98 which is drawn in FIG.
  • the ratio (a) between the pivot axis 47 of the articulation point of the rod 7 and the axis of rotation 48 of the upper feed roller 3 to the distance (b) between the axis of rotation 48 of the upper feed roller 3 and the pivot axis 52 the articulation point of the swivel arms 13, 14 on the rocker 4 is equal to the ratio of the distance (d) between the axis of rotation 48 of the upper feed roller 3 and the cutting line 98 between the longitudinal center plane 50 of the contact surface 51 of the contact ruler 56 and that connecting the axis of rotation 48 to the swivel axis 52 Plane to and distance (c) between the pivot axis 52 on the rocker 4 and the pivot point of the pivot arms on the
  • the crank 33 is connected to the lower feed roller 2 via the shaft 34 to be driven.
  • the press roller 3 is not driven, but is freely rotatably mounted in the rocker 4.
  • the crank 33 which works as an oscillating pendulum member, has a tooth segment 65.
  • a longitudinally displaceable slide 66 is mounted in the device housing 1. Above this is a pliers member 70, which has at least one resilient section 67 and is fixedly connected to the carriage 66 at the point designated by the reference number 68, e.g. is screwed. Laterally, the slide 66 is connected to a toothed rack 69 which serves as a circular guide and which meshes with the toothed segment 65.
  • the upper press roller 3 is periodically pressed against the pliers member 70 by the rocking movement of the rocker 4, such that the sheet metal strip to be fed intermittently is clamped and advanced by the pliers formed by the pliers member 70 and the slide 66.
  • a longitudinally displaceable slide 66 is again available.
  • a pliers member 70 is screwed onto this again.
  • the press roll 3 is freely rotatably mounted in the rocker 4.
  • the carriage 66 has a rack 71 at the bottom.
  • the lower feed roller 2 has a toothed ring 72, that is to say it is designed as a toothed wheel which effects the oscillating back and forth movement of the slide 66.
  • FIG. 8 basically shows the same embodiment that is shown in FIG. 7, whereby it should first be pointed out that the pliers member 70 can not be flat on the bottom, but can be designed in such a way that it can interact with bands that have already been profiled.
  • the carriage 66 is mounted on rolling elements 73 in raceways 74 which are fixedly connected to the housing 1 and which raceways have a prismatic cross section.
  • the shaft 34 to be driven is rotatably connected to a plate 74, which plate 74 is articulated on the slide 66 via a link 75.
  • the other components are the same as those of the previously described designs.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Advancing Webs (AREA)
  • Press Drives And Press Lines (AREA)
EP89119812A 1988-10-26 1989-10-25 Dispositif pour avancer pas à pas une bande Expired - Lifetime EP0366108B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3984/88A CH677328A5 (fr) 1988-10-26 1988-10-26
CH3984/88 1988-10-26

Publications (3)

Publication Number Publication Date
EP0366108A2 true EP0366108A2 (fr) 1990-05-02
EP0366108A3 EP0366108A3 (en) 1990-10-17
EP0366108B1 EP0366108B1 (fr) 1993-03-24

Family

ID=4267632

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89119812A Expired - Lifetime EP0366108B1 (fr) 1988-10-26 1989-10-25 Dispositif pour avancer pas à pas une bande

Country Status (5)

Country Link
US (1) US5102026A (fr)
EP (1) EP0366108B1 (fr)
JP (1) JP2763159B2 (fr)
CH (1) CH677328A5 (fr)
DE (1) DE58903879D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0395972A1 (fr) * 1989-05-03 1990-11-07 Bruderer Ag Dispositif pour l'avance intermittente de feuillard
EP1657008A1 (fr) * 2004-11-05 2006-05-17 Bruderer Ag Dispositif pour l'alimentation d'un matériau en bande vers une presse

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2684042B1 (fr) * 1991-11-26 1996-06-07 Heidelberg Harris Sa Dispositif d'engagement de bande pour presse a imprimer a bobine.
US6651476B2 (en) 2001-10-10 2003-11-25 Mechanical Tool & Engineering Co. Combined coil-stock straightening and feed apparatus
DE50114475D1 (de) * 2001-10-18 2008-12-18 Bruderer Ag Vorrichtung zum schrittweisen Vorschieben eines bandförmigen Werkstückes
ATE381396T1 (de) * 2002-08-22 2008-01-15 Bruderer Ag Vorschubvorrichtung zum intermittierenden zuführen eines bandförmigen rohlings zu einer presse und verfahren zum betrieb derselben

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR917975A (fr) * 1945-11-24 1947-01-27 Dispositif d'aménage automatique pour presses
US2946586A (en) * 1953-09-17 1960-07-26 Albert F Pityo Web feeding mechanism
GB1405774A (en) * 1971-10-01 1975-09-10 Bruderer Ag Apparatus for the stepwise feed of workpieces
FR2290972A1 (fr) * 1974-11-16 1976-06-11 Grau Erich Mecanisme d'avance pour l'alimentation intermittente en materiau sur les estampeuses ou presses
DE3330051A1 (de) * 1983-02-22 1984-08-23 Sankyo Manufacturing Co., Ltd., Tokyo Walzenvorschubeinrichtung
DE3526846A1 (de) * 1984-06-04 1986-02-06 Sankyo Manufacturing Co., Ltd., Tokio/Tokyo Walzenzufuehrungseinrichtung
EP0253205A2 (fr) * 1986-07-12 1988-01-20 L. SCHULER GmbH Dispositif pour l'avance intermittente de feuillard avec deux cylindres d'avance actionnés en sens opposé

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB228770A (en) * 1924-03-22 1925-02-12 Muller J C & Co Improvements in and connected with means for driving the shafts of cigarette machines
US3022680A (en) * 1960-07-18 1962-02-27 Ingersoll Milling Machine Co Incremental feed mechanism
US3493159A (en) * 1967-12-15 1970-02-03 Bliss Co Strip roll feeder
US3638846A (en) * 1970-08-10 1972-02-01 Littell Machine Co F J Feeding apparatus using rack and pinion mechanism having dwell periods
CH544243A (de) * 1971-10-01 1973-11-15 Bruderer Ag Vorrichtung zum oszillierenden Antreiben von Wellen und Verwendung der Vorrichtung
DE3330001A1 (de) * 1983-08-04 1985-02-21 Bodo Dr.-Ing. 5810 Witten Eickmann Lebensrettungsgeraet vor der gefahr des ertrinkens fuer viele personen gleichzeitig

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR917975A (fr) * 1945-11-24 1947-01-27 Dispositif d'aménage automatique pour presses
US2946586A (en) * 1953-09-17 1960-07-26 Albert F Pityo Web feeding mechanism
GB1405774A (en) * 1971-10-01 1975-09-10 Bruderer Ag Apparatus for the stepwise feed of workpieces
FR2290972A1 (fr) * 1974-11-16 1976-06-11 Grau Erich Mecanisme d'avance pour l'alimentation intermittente en materiau sur les estampeuses ou presses
DE3330051A1 (de) * 1983-02-22 1984-08-23 Sankyo Manufacturing Co., Ltd., Tokyo Walzenvorschubeinrichtung
DE3347786A1 (de) * 1983-02-22 1985-05-15 Sankyo Manufacturing Co., Ltd., Tokio/Tokyo Walzenvorschubeinrichtung
DE3526846A1 (de) * 1984-06-04 1986-02-06 Sankyo Manufacturing Co., Ltd., Tokio/Tokyo Walzenzufuehrungseinrichtung
EP0253205A2 (fr) * 1986-07-12 1988-01-20 L. SCHULER GmbH Dispositif pour l'avance intermittente de feuillard avec deux cylindres d'avance actionnés en sens opposé

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0395972A1 (fr) * 1989-05-03 1990-11-07 Bruderer Ag Dispositif pour l'avance intermittente de feuillard
EP1657008A1 (fr) * 2004-11-05 2006-05-17 Bruderer Ag Dispositif pour l'alimentation d'un matériau en bande vers une presse
US7374073B2 (en) 2004-11-05 2008-05-20 Bruderer Ag Apparatus for feeding a band-type material to a press

Also Published As

Publication number Publication date
JPH02225249A (ja) 1990-09-07
CH677328A5 (fr) 1991-05-15
DE58903879D1 (de) 1993-04-29
JP2763159B2 (ja) 1998-06-11
EP0366108A3 (en) 1990-10-17
EP0366108B1 (fr) 1993-03-24
US5102026A (en) 1992-04-07

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