EP0570961A1 - Arbeitstisch für eine Stanze - Google Patents

Arbeitstisch für eine Stanze Download PDF

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Publication number
EP0570961A1
EP0570961A1 EP93108210A EP93108210A EP0570961A1 EP 0570961 A1 EP0570961 A1 EP 0570961A1 EP 93108210 A EP93108210 A EP 93108210A EP 93108210 A EP93108210 A EP 93108210A EP 0570961 A1 EP0570961 A1 EP 0570961A1
Authority
EP
European Patent Office
Prior art keywords
work table
fact
feed
sheet
shaft
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.)
Withdrawn
Application number
EP93108210A
Other languages
English (en)
French (fr)
Inventor
Stefano Raimondi
Antonio Sarti
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.)
Rainer SRL
Original Assignee
Rainer SRL
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 Rainer SRL filed Critical Rainer SRL
Publication of EP0570961A1 publication Critical patent/EP0570961A1/de
Withdrawn legal-status Critical Current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
    • 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
    • B21D43/10—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by grippers

Definitions

  • the present invention relates to a work table for a punching machine.
  • the work table On punching machines, the work table is positioned horizontally between the punching station and work feed carriage, and should provide for sliding the metal sheet to and from the punching station with as little friction as possible.
  • the work table presents semispherical metal bosses on which the sheet rests, and, on some machines, also presents a hatch closed by a horizontal laterally-hinged plate rotatable downwards.
  • the plate In the downward-sloping position, the plate defines a sloping surface along which, in use, large-sized sheet metal parts slide by force of gravity on to an endless belt located beneath the work table and which provides for removing the parts off the machine.
  • the plate is also provided with semispherical bosses for reducing friction between itself and the part.
  • a work table for a punching machine comprising a punching station for a metal sheet, and a carriage for feeding the sheet along a horizontal upper supporting surface defined by said work table; said work table comprising a hatch type device in turn comprising a flat structure movable in relation to the work table and between a first operating position wherein said structure is substantially coplanar with said work table, and a second operating position wherein said structure is tilted in relation to said work table, so as to enable the sheet metal part to be fed along the supporting surface in an inclined direction in relation to the supporting surface itself; characterized by the fact that said device also comprises a transfer unit for feeding said part in said direction.
  • Number 1 in Fig.1 indicates a punching machine comprising a punching station 2 for a metal sheet 3; a horizontal work table 4 for supporting sheet 3 on an upper supporting surface; and a carriage 5 with grips 6 for moving sheet 3 on work table 4 along two horizontal perpendicular axes X and Y, and for loading and unloading sheet 3 on and off table 4.
  • Table 4 is substantially rectangular, and comprises two lateral portions 7 and 8 and a central portion 9, all rectangular in shape, coplanar with one another, and of the same length along the X axis.
  • Portion 9 is divided parallel to the Y axis into a first portion 10a supported by and integral with portions 7 and 8; and a second portion 10b close to station 2 and mounted so as to move in relation to table 4.
  • portion 10b is defined by a hatch device 11 comprising a frame structure 12 consisting of a number of side members 13 parallel to the X axis and connected by a number of cross members 14 parallel to the Y axis.
  • structure 12 is hinged so as to rotate about said short side between a first and second operating position and by virtue of a known actuator 15.
  • the respective ends of side members 13 are fitted with a hinge pin 16, the axial ends of which are supported on portions 7 and 8 of table 4.
  • structure 12 in the first operating position, presents its upper surface substantially coplanar with the upper surfaces of portions 7 and 8, so as to support part 17 of sheet 3 coming off station 2; and, in the second operating position, structure 12 is inclined downwards, so as to enable part 17 to be fed beneath the supporting surface in direction 20 and on to a powered endless belt type device 18 located parallel to and beneath portion 10a, and which provides for removing part 17 from machine 1.
  • Device 11 also comprises a transfer unit 21 for feeding part 17 to device 18 and in turn comprising a number of roller type feed units 22.
  • Each unit 22 comprises a shaft 23 and annular elements 24 supporting shaft 23 and equal in number to side members 13.
  • Each shaft 23 extends perpendicular to side members 13 by which it is supported via annular elements 24.
  • each annular element 24 presents, along its outer periphery, an annular groove housed in a respective semicircular recess 25 on top of each side member 13.
  • Each unit 22 also presents a number of rollers 27 fitted through coaxially with respective shaft 23 and connected integral with the same by means of pins 28.
  • Shafts 23 of units 22 are arranged parallel to one another and distributed evenly along the X axis.
  • each roller 27 presents a number of bristle assembles 29 extending radially outwards and, as shown in Fig.3, arranged over the outer surface of roller 27 in neat, slightly helical, longitudinal rows.
  • Structure 12 presents two central side members 13 arranged close together and between which each shaft 23 is fitted with a toothed pulley 30.
  • transfer unit 21 comprises a drive unit 31 for powering feed units 22.
  • Drive unit 31 comprises a toothed drive belt 32 meshing with all the pulleys 30 of units 22; and a motor 33 mounted (in a manner not shown) integral with a fixed part (not shown).
  • Belt 32 also meshes with a toothed pulley 34 located beneath structure 12 and fitted to a hub 35.
  • Unit 31 also comprises a clutch 36 located between the output shaft of motor 33 and hub 35, and which provides for transmitting motion from the shaft of motor 33 to hub 35 when structure 12 is set to said second operating position.
  • Portions 7 and 8 and portion 10a of portion 9 are each defined by a plate (not shown) and by a number of side members 37 supported on the plate (not shown), similar to side members 13 and arranged parallel to the Y axis.
  • Each portion 7, 8 and portion 10a of portion 9 present a number of sheet feed units 38, each comprising a shaft 39 and annular elements 40 supporting shaft 39 and equal in number to side members 37.
  • Each shaft 39 extends perpendicular to side members 37 by which it is supported in idle manner via annular elements 40.
  • each annular element 40 presents, along its outer periphery, an annular groove housed in a respective semicircular recess 41 on top of each side member 37.
  • Each unit 38 also presents a number of rollers 42 fitted through coaxially with respective shaft 39. Shafts 39 of units 38 are arranged parallel to one another and distributed evenly along the X axis. Like rollers 27, each roller 42 presents, externally, a number of bristle assemblies extending radially outwards and, like assemblies 29, arranged on the outer surface of roller 42 in neat, slightly helical, longitudinal rows.
  • machine 1 presents an electronic control system 44 for controlling the punching process and operation of carriage 5, grips 6, actuator 15, motor 33 and powered device 18, which presents a sensor 45 for detecting the passage of part 17.
  • sheet 3 for punching is first gripped by grips 6 and transferred on to table 4 by carriage 5, which then feeds sheet 3 along axes X and Y so as to feed successive portions of sheet 3 on to structure 12 and into station 2.
  • part 17 must be transferred off machine 1 by structure 12 to enable the other portions to be punched.
  • actuator 15 is operated to set structure 12 to said second operating position wherein the shaft of motor 33 and hub 35 are connected to each other by clutch 36; and motor 33 is activated to rotate shafts 23 and, consequently, rollers 27, which transfer part 17 to powered device 18.
  • Device 18 is then activated to remove part 17 off machine 1, and, once part 17 is removed, sensor 45 supplies a consent signal to control system 44 so as to activate actuator 15 and restore structure 12 to the first operating position.
  • structure 12 presents one feed unit, defined by a bristle belt looped about two transmission rollers; and a drive unit for powering said belt and transferring large-sized parts to the powered device.
EP93108210A 1992-05-20 1993-05-19 Arbeitstisch für eine Stanze Withdrawn EP0570961A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBO920185 1992-05-20
ITBO920185A IT1257795B (it) 1992-05-20 1992-05-20 Piano di lavoro per una macchina punzonatrice

Publications (1)

Publication Number Publication Date
EP0570961A1 true EP0570961A1 (de) 1993-11-24

Family

ID=11338265

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93108210A Withdrawn EP0570961A1 (de) 1992-05-20 1993-05-19 Arbeitstisch für eine Stanze

Country Status (2)

Country Link
EP (1) EP0570961A1 (de)
IT (1) IT1257795B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108906951A (zh) * 2018-05-24 2018-11-30 国网山东省电力公司济南市章丘区供电公司 一种导线压接件弯折机
CN110918810A (zh) * 2019-12-12 2020-03-27 奇瑞汽车股份有限公司 一种柔性辅助工装

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2603338A (en) * 1952-07-15 Sheet metal transfer device
DE1602602B2 (de) * 1966-05-31 1976-08-12 The Warner & Swasey Co., Cleveland, Ohio (V.St.A.) Zufuehrtisch zur laengs- und querbewegung plattenfoermiger werkstuecke an einer stanzpresse
FR2643347A1 (fr) * 1989-02-23 1990-08-24 Peugeot Dispositif d'acheminement de pieces avec ou sans retournement en vue de leur empilage dans au moins un recipient

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2603338A (en) * 1952-07-15 Sheet metal transfer device
DE1602602B2 (de) * 1966-05-31 1976-08-12 The Warner & Swasey Co., Cleveland, Ohio (V.St.A.) Zufuehrtisch zur laengs- und querbewegung plattenfoermiger werkstuecke an einer stanzpresse
FR2643347A1 (fr) * 1989-02-23 1990-08-24 Peugeot Dispositif d'acheminement de pieces avec ou sans retournement en vue de leur empilage dans au moins un recipient

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108906951A (zh) * 2018-05-24 2018-11-30 国网山东省电力公司济南市章丘区供电公司 一种导线压接件弯折机
CN108906951B (zh) * 2018-05-24 2019-10-11 国网山东省电力公司济南市章丘区供电公司 一种导线压接件弯折机
CN110918810A (zh) * 2019-12-12 2020-03-27 奇瑞汽车股份有限公司 一种柔性辅助工装

Also Published As

Publication number Publication date
ITBO920185A0 (it) 1992-05-20
ITBO920185A1 (it) 1993-11-20
IT1257795B (it) 1996-02-13

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