EP4159366A1 - Entladevorrichtung für eine stanzpresse - Google Patents

Entladevorrichtung für eine stanzpresse Download PDF

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Publication number
EP4159366A1
EP4159366A1 EP22198421.4A EP22198421A EP4159366A1 EP 4159366 A1 EP4159366 A1 EP 4159366A1 EP 22198421 A EP22198421 A EP 22198421A EP 4159366 A1 EP4159366 A1 EP 4159366A1
Authority
EP
European Patent Office
Prior art keywords
extraction
extraction group
collection tray
translation
piece
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.)
Pending
Application number
EP22198421.4A
Other languages
English (en)
French (fr)
Inventor
Diego LECCHI
Matteo BERTOLETTI
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.)
Diesse Presse Srl
Original Assignee
Diesse Presse 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 Diesse Presse Srl filed Critical Diesse Presse Srl
Publication of EP4159366A1 publication Critical patent/EP4159366A1/de
Pending legal-status Critical Current

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Classifications

    • 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
    • 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
    • B21D43/16—Advancing work in relation to the stroke of the die or tool by gravity, e.g. chutes
    • 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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching

Definitions

  • the present invention relates to an unloading apparatus for extracting a piece from a blanking press, a blanking system, and an extraction method.
  • a blank is generally obtained that has a number of portions that need to be removed, such as foundry or molding burrs or those portions consisting of the material that has occupied the gates and wells.
  • Blanking presses or blanking-burring presses, perform mechanical blanking operations on the blank, involving the separation of unwanted portions, thus obtaining a semi-processed or semi-finished piece on which further mechanical finishing operations may be performed.
  • the piece In the blanking press, having performed the blanking operations, the piece usually remains housed in the movable die, positioned above and at a certain distance from the fixed die. The piece must be separated from the movable die and extracted from the press, i.e., taken out of the press, to be sent on to further processing.
  • the separation from the die is generally accomplished by operating appropriate devices applied to the die, called "extractors".
  • the piece is manually extracted by an operator.
  • a solution requires a constant engagement of employees and, furthermore, requires the operators to work closely with the blanking press, for example at least inserting their arms between the dies. These operations are therefore extremely dangerous and involve a high risk of injury to the operator.
  • these devices involve a horizontally translating collection plate suitable for entering between the two dies of the blanking press to house the piece following the blanking operations.
  • the piece is slid onto unloading ramps and taken directly to the collection area without the involvement of operators.
  • the operator is therefore forced to reach that height, for example by means of ladders or hoists, and then return to working height to replace the piece.
  • unloading ramps are very inclined, possibly causing pieces to fall or roll in an unwanted manner, or not very inclined but very long, taking up too much work space.
  • an unloading apparatus for extracting a piece from a blanking press 9 has been referred to collectively as reference number 1.
  • the apparatus 1 comprises:
  • the extraction group 2 comprises:
  • said collection tray 20 when the extraction group 2 is in the raised position S, said collection tray 20 is operable in translation along a horizontal axis X-X, between an advanced extraction position E for collecting the piece, and a retracted receiving position R.
  • the tray 20 has at least one free side 250 which extends in a substantially parallel direction to said horizontal axis X-X.
  • said collection tray 20 when the extraction group 2 is in the lowered position A, said collection tray 20 is operable in rotation between a loading configuration C and an unloading configuration SC in which said tray is rotated with respect to the loading configuration, for unloading the piece from the free side 250 of the collection tray 20.
  • providing for the piece to be collected from the press at an extraction height H1 and for the same piece to be unloaded at an unloading height H2 that is lower than the extraction height H1 allows the collecting and unloading operations to be separated into two separate moments, simplifying the mechanisms involved in the two operations, and most importantly, allowing the piece to be handled for unloading only when a lower height is reached, which provides greater safety for the operators managing the process.
  • the primary frame 10 is substantially box-shaped, with four pillars, one at each corner of the primary frame 10.
  • the primary frame 10 is shaped in such a way as to contain the extraction group 2 while simultaneously allowing the translation of the collection tray 20 and the passage of the piece.
  • the apparatus 1 comprises:
  • the longitudinal sliding members 41 are stably constrained with the secondary frame 200 of the extraction group 2 so that the extraction group 2 is slidable in said longitudinal sliding guides 40.
  • the apparatus 1 comprises:
  • said transverse sliding members 31 are stably constrained with said collection tray 20, so that the collection tray 20 is slidable in said transverse sliding guides 30.
  • the transverse sliding members 31 are engaged with a carriage-carrier cross 300.
  • This carriage-carrier cross 300 is engaged with the collection tray 20, so that said carriage-carrier cross 300 is also slidable in the horizontal axis X-X.
  • This carriage-carrier cross 300 is suitable for balancing the weight of the collection tray 20 when it is in the extraction position E and houses the piece, so as to avoid sudden movements or breakage of the apparatus 1.
  • the apparatus 1 comprises a second pneumatic piston 55 supported by the secondary frame 200 and engaged with the collection tray 20 in an engagement portion 25 of said collection tray 20, so that said collection tray 20 is operable in rotation by the translation of said second pneumatic piston 55.
  • the apparatus 1 also comprises a chute element 70 supported by the primary frame 1, and the collection tray 20, when it is in the unloading configuration SC, is aligned with said chute element 70 along said free side 250 to facilitate the unloading of the piece.
  • the apparatus 1 comprises:
  • the electric motor 6 is of the brushless type.
  • the electric motor 6 comprises an inverter.
  • the inverter allows the extraction and unloading cycle to be managed precisely and the operating speed to be optimized.
  • the transmission members 61 comprise a worm screw element 610 and a nut, or screw nut, 611 engaged with the extraction group 2.
  • the electric motor 6 engages and rotatably moves said worm screw element 610, causing the extraction group 2 to be translated along the vertical axis Z-Z.
  • the transmission members 61 also comprise a connection joint 620, suitable for connecting the electric motor 6 to the worm screw element 610.
  • the transmission members 61 also comprise a support element 630, such as a bearing, suitable for supporting said worm screw element 610 in such a way as to allow it to rotate and simultaneously support part of its weight.
  • a support element 630 such as a bearing
  • the apparatus 1 comprises a control unit 7, operatively connected with the extraction group 2 and with the electric motor 6, suitable for controlling the activation of the extraction group 2 and of the tray 20.
  • the primary frame 10 comprises ground support feet 80, suitable for supporting said apparatus 1 and for counteracting any misalignments and undesired movements due to evacuation operations.
  • These support feet 80 comprise adjustment means suitable for enabling a height adjustment of said support feet 80, so that said apparatus 1 may be leveled.
  • the apparatus 1 comprises connection elements 81 housed on the primary frame 10, suitable for engaging the apparatus 1 with a blanking press 9.
  • the apparatus 1 comprises auxiliary connection arms 82 housed on the primary frame 10, suitable for entering into contact with the blanking press 9 and suitable for counteracting any misalignments and/or undesired movements due to the extraction operations.
  • the apparatus 1 further comprises protective panels housed on said primary frame 10, suitable for isolating the apparatus 1 and preventing undesired contact with an operator.
  • control unit 7 is suitable for processing a signal coming from the blanking press 9, and is suitable for translating said signal into a maximum stroke Hmax of the extraction group 2 along the vertical axis Z-Z.
  • the apparatus 1 comprises movement sensors, e.g., absolute encoders, housed on the primary frame 10 or in the motor 6.
  • movement sensors e.g., absolute encoders
  • Said movement sensors are suitable for detecting the effective translation height Heff of the extraction group 2.
  • the control unit 7 enables the translation of the extraction group 2 in accordance with a detection of the movement sensors of an effective height Heff lower than said maximum stroke Hmax, and the control unit 7 blocks the translation of the extraction group 2 in accordance with a detection of the movement sensors of an effective height Heff equal to said maximum stroke Hmax.
  • control unit 7 is suitable for transposing said maximum stroke Hmax into a maximum number of motor revolutions, and suitable for forcing the electric motor 6 to perform said maximum number of engine revolutions, so as to adjust the translation of the extraction group 2 along the vertical axis Z-Z.
  • the present invention also relates to a blanking system comprising a blanking press 9 and an apparatus 1 according to the invention, applied to the blanking press.
  • the present invention also relates to a method of extracting a piece exiting a blanking press 9, said method comprising the steps of:
  • the unloading apparatus for extracting a piece from a blanking press, the blanking system, and the extraction method described above largely fulfill the object of the present invention by overcoming the typical problems of the prior art.
  • the unloading apparatus optimizes the processes of extracting and unloading pieces from a blanking press.
  • the unloading apparatus operates in total safety for the people using it, such as maintenance workers and/or toolmakers.
  • the unloading apparatus operates in total safety for those components that compose it (i.e. worm screw element, tray).
  • control unit activates the movements of the unloading apparatus according to what is happening inside the blanking press.
  • the unloading apparatus makes it possible to automate the extraction process without directly involving an operator, who is required only to remotely control the process via the control unit.
  • the extraction method according to the invention makes it possible to shorten the time required to carry out piece extraction and unloading operations.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Presses And Accessory Devices Thereof (AREA)
EP22198421.4A 2021-09-29 2022-09-28 Entladevorrichtung für eine stanzpresse Pending EP4159366A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102021000024950A IT202100024950A1 (it) 2021-09-29 2021-09-29 Apparato di scarico per una pressa di tranciatura

Publications (1)

Publication Number Publication Date
EP4159366A1 true EP4159366A1 (de) 2023-04-05

Family

ID=79019278

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22198421.4A Pending EP4159366A1 (de) 2021-09-29 2022-09-28 Entladevorrichtung für eine stanzpresse

Country Status (2)

Country Link
EP (1) EP4159366A1 (de)
IT (1) IT202100024950A1 (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62248523A (ja) * 1986-04-18 1987-10-29 Aida Eng Ltd プレス機械の製品取出装置
CN109277867A (zh) * 2018-08-01 2019-01-29 无锡庆源激光科技有限公司 一种切管机零尾料自动下料装置
CN109433934A (zh) * 2018-12-20 2019-03-08 江苏泽恩汽机车部品制造有限公司 一种带自动卸废料装置的冲压模具
CN111204076A (zh) * 2019-12-31 2020-05-29 太田机械江苏有限公司 一种液压机用快速上料机
CN210967189U (zh) * 2019-08-26 2020-07-10 惠州市泰铭五金有限公司 一种新型智能数控液压剪板机
CN112477254A (zh) * 2020-10-28 2021-03-12 苏州华怡炉料再生有限公司 一种可自动出料的废旧金属回收用压块装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62248523A (ja) * 1986-04-18 1987-10-29 Aida Eng Ltd プレス機械の製品取出装置
CN109277867A (zh) * 2018-08-01 2019-01-29 无锡庆源激光科技有限公司 一种切管机零尾料自动下料装置
CN109433934A (zh) * 2018-12-20 2019-03-08 江苏泽恩汽机车部品制造有限公司 一种带自动卸废料装置的冲压模具
CN210967189U (zh) * 2019-08-26 2020-07-10 惠州市泰铭五金有限公司 一种新型智能数控液压剪板机
CN111204076A (zh) * 2019-12-31 2020-05-29 太田机械江苏有限公司 一种液压机用快速上料机
CN112477254A (zh) * 2020-10-28 2021-03-12 苏州华怡炉料再生有限公司 一种可自动出料的废旧金属回收用压块装置

Also Published As

Publication number Publication date
IT202100024950A1 (it) 2023-03-29

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