EP2080913A1 - Dispositif de production sous vide et son procédé de fonctionnement - Google Patents

Dispositif de production sous vide et son procédé de fonctionnement Download PDF

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Publication number
EP2080913A1
EP2080913A1 EP09000461A EP09000461A EP2080913A1 EP 2080913 A1 EP2080913 A1 EP 2080913A1 EP 09000461 A EP09000461 A EP 09000461A EP 09000461 A EP09000461 A EP 09000461A EP 2080913 A1 EP2080913 A1 EP 2080913A1
Authority
EP
European Patent Office
Prior art keywords
suction
control
valve
vacuum generator
generator device
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
EP09000461A
Other languages
German (de)
English (en)
Other versions
EP2080913A8 (fr
EP2080913B1 (fr
Inventor
Ralf Medow
Yvonne Krehl
Markus Bretzler
Volker Geywitz
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.)
Festo SE and Co KG
Original Assignee
Festo SE and Co KG
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 Festo SE and Co KG filed Critical Festo SE and Co KG
Publication of EP2080913A1 publication Critical patent/EP2080913A1/fr
Publication of EP2080913A8 publication Critical patent/EP2080913A8/fr
Application granted granted Critical
Publication of EP2080913B1 publication Critical patent/EP2080913B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
    • F04F5/48—Control
    • F04F5/52—Control of evacuating pumps

Definitions

  • the invention relates to a method for operating a vacuum generator device according to the preamble of claim 1 and to a vacuum generator device according to the preamble of claim 6.
  • At one of the US 4861232 known vacuum generator device of this type must be controlled separately as a blow-off solenoid valve for ventilation of the suction pad assembly and requires a separate control line.
  • An object of the present invention is thus to control the control valve for controlling the suction vacuum and the To control blow-off valve with the smallest possible number of control lines and a common control signal.
  • the blow-off valve does not need to be controlled separately externally, but it automatically opens with the end of the external control signal for the control valve, so that a total of only one control signal is required for both functions.
  • the internal control electronics variable functions can be derived from the control signal, in particular the sequential opening of the two valves.
  • the control valve remains open in the simplest case during the duration of the control signal, but it can also be controlled to reduce the air consumption, wherein the suction pressure in the suction pad assembly is then maintained by means connected to the Ejektor worn check valve. In this case, only leakage losses must be compensated by a renewed actuation of the control valve.
  • the opening time of the blow-off valve is expediently fixed or variable by means of a timer in the control electronics.
  • the supply of the control signal preferably takes place from an external control device to the internal control electronics of the vacuum generator device via a connection of a communication interface or via a bus interface, so that the smallest possible number of connection contacts is required.
  • a pressure detecting device is expediently connected to the section of the suction channel extending between the check valve and the suction pad arrangement or directly to the suction pad arrangement.
  • the control electronics in this case has a control device for controlling the Saugunter horrs to a predetermined target value by switching on and off the control valve.
  • the communication interface expediently has two power supply contacts, one control signal contact, and preferably one or two feedback or diagnostic contacts.
  • the communication interface can also be embodied as IO-Link interface and the control electronics are IO-Link-capable.
  • the communication interface can also be designed as an ASi bus interface, the control electronics then containing an ASi bus node.
  • the communication interface can be formed by the inventive reduction of control lines in an advantageous manner as 4- or 5-pin connector, in particular as a 5-pin M12 connector.
  • the vacuum generator device serves the purpose of holding objects 5 by means of negative pressure so that they can be repositioned between different locations. It is used, for example, in assembly technology or in the packaging industry.
  • FIG. 1 is exemplified as a subject 5 a plate-shaped product, here in the form of a thin plate.
  • the vacuum generator device includes a vacuum generator unit 2, to which at least one suction gripper 7 or a suction gripper arrangement comprising a plurality of suction grippers is connected.
  • the vacuum generator device 1 can also be equipped with a plurality of vacuum generator units 2, which can also be combined to form an assembly.
  • suction gripper 7 is connected via a suction line 4 to the vacuum generator unit 2. He can do this be arranged away from the vacuum generator unit 2. However, it is also possible to arrange the suction gripper 7 directly on the vacuum generator unit 2, so that a rigid assembly is present.
  • the suction gripper 7 is an example of a suction cup or suction cup. It limits a suction opening 12 having a working opening 8 and can be displaced in such a way that it comes into contact with its work opening 8 ahead of the object 5 to be handled. At the moment of investment the work opening 8 is covered by the article 5 and the suction chamber 12 thus closed to the atmosphere. This condition is indicated by dash-dotted lines in the drawing.
  • the displacement of the suction gripper 7 is done by shifting a device supporting it, which may be the vacuum generator unit 2 itself when it is attached thereto.
  • an air supply interface 17 which serves to feed compressed air, which is provided by an external compressed air source 18 is available.
  • an in FIG. 1 schematically indicated external electronic control device 23 are connected via a connecting cable 21.
  • the suction vacuum required for gripping an article 5 is generated directly in the vacuum generator unit 2.
  • This is for this purpose equipped with at least one ejector 27 and includes at least one operating according to the ejector principle suction nozzle 26, the inlet 29 is connected via an air supply duct 32 to the air supply interface 17.
  • the ejector device 27 also has an outlet 33 leading to the atmosphere, to which a silencer can be connected if required.
  • the ejector device 27 has a suction side or suction opening 34, which is connected via a suction channel 35 to the suction chamber 12 of the suction gripper 7.
  • a first channel section 35a of the suction channel 35 extends in the main housing 3 and ends at a suction line interface 6, in which the suction line 4 is connected in a preferably detachable manner, in which the suction channel 35 with a second channel section 35b up to the suction chamber 12 out continues.
  • an electrically actuated control valve 36 is connected, which conveniently has a 2/2-way functionality. It may selectively shut off or release the passage of air through the air supply passage 32 to thereby selectively shut off or turn on the air supply to the inlet 29 of the ejector means 27.
  • blow-out channel 38 Another air supply channel, which is designated as a blow-out channel 38 for better distinction, runs from the air supply interface 17 via a likewise designed as an electrically actuated control valve blow-off valve 37 to a connection point 28 with the suction channel 35th
  • the purge valve 37 may optionally occupy one of two positions in which it either shuts off or releases the passage of air through the exhaust passage 38.
  • In the exhaust passage 38 may also be connected to a non-illustrated adjustable or non-adjustable throttle element to adjust the intensity of a discharge pulse when opening the blow-off 37.
  • check valve 42 In the suction passage 35 connected to the suction port 34 of the ejector 27 check valve 42 is connected. It is oriented so that it allows an air flow from the suction pad 37 toward the ejector 27, but prevented in the opposite direction. In other words, it assumes a shut-off position when the pending on the side of the ejector 27 pressure is absolutely greater than the resulting on the side of the suction pad 7 pressure.
  • the check valve 42 is seated in that portion of the suction channel 35 which extends between the suction port 34 and the connection point 28.
  • a pressure detecting device 24 is connected to the suction channel 35, which allows detection of the pressure prevailing in the suction passage 35 and thus also the negative pressure prevailing therein.
  • the pressure detecting device 24 is a pressure sensor which converts the pneumatic pressure into electrical pressure signals and feeds them via a signal line 25, indicated by dashed lines, to an electronic control unit 14 in the vacuum generator unit 2.
  • the pressure detection device 24 may also, for example, in a manner not shown an analog and a digital Having output to supply corresponding signals via a multi-wire signal line 25 of the control electronics 14.
  • control valve 36 and the blow-off valve 37 are expediently solenoid valves, but training as piezo valves is also conceivable. Appropriately, they are of the type "normally closed", so that they occupy the shut-off the associated channel closed position in the electrically non-actuated state. However, the control valve 36 may also be of the "normally open” type. It is also conceivable to use a bistable control valve (impulse valve).
  • Their control signals receive the control valve 36 and the blow-off valve 37 via at least one electrical control line 47, 48, by which they are connected to the control electronics 14.
  • the control electronics 14 is connected via a signal transmission line 43, two power supply lines 44, 45 and a diagnostic or feedback line 46 to the communication interface 22.
  • a further diagnostic or feedback line can also be provided in order to be able to supply, for example, sensor signal feedback and diagnostic feedback separately to the external electronic control device.
  • the communication interface 22 is designed as a 4- or 5-pin connector, preferably as a 5-pin M12 connector. It consists of a plug 22a and a plug-in receptacle 22b.
  • the connection cable 21 is formed in this case as 4- or 5-pin cable.
  • the plug on the housing and designed as a coupling Plug receptacle be arranged on the connection cable 21.
  • connection cable 21 may also be formed as a bus line or contain bus lines.
  • bus lines can simultaneously serve as voltage supply lines, the control signals and feedback signals are then modulated.
  • the communication interface 22 can then be embodied, for example, as an IO-Link interface or ASi-bus interface, in which case the control electronics 14 must be designed to be capable of IO-Link or must contain an ASi bus node.
  • an M12 connector communication interface of the plug 22a may be provided for example with a bus adapter 20, wherein also a total of a bus interface can be used with conventional bus connectors.
  • the control electronics 14 has for manual adjustment or programming a display 55 and, for example, designed as a keyboard input means 56 to allow a variable input on site. Such inputs or programming can of course also be done by the external electronic control device.
  • a warning device designed as a tone generator 57 can be used for diagnostic and monitoring purposes.
  • a bus node 52 is included as a bus station for communication with the external electronic control device, provided that the connection is made via a bus. Furthermore, a control device 53 for controlling the pressure in the suction passage 35 by actuation of the control valve 36 and a timer 54 as a timing control means for Control of the opening time of the blow-off valve 37 is provided.
  • the bus node 52, the control device 53 and the timer 54 may be completely or partially integrated in a microcontroller.
  • control signal A which is supplied by the external control device 23 via the communication interface 22 of the control electronics 14 in the vacuum generator unit 2 for sequential control of both the same normal switching positions having valves 36, 37 or for simultaneous control of both opposing normal switching positions having valves 36th , 37.
  • the control signal is formed as a 0-signal, which interrupts a permanently applied 1-signal.
  • This control signal A is supplied to the control device 53 or a corresponding microcontroller in the control electronics 14 and triggers a corresponding sequence program.
  • a switch-on signal S1 for the control valve 36 is formed.
  • the control valve 36 opens and compressed air can flow through the ejector device 27.
  • an increasing negative pressure in the suction channel 35 and thus in the suction chamber 12 of the suction pad 7 is formed.
  • the increasing negative pressure -p is in the uppermost signal curve of FIG. 2 shown. As a result, the object 5 is sucked in by the suction gripper 7.
  • the negative pressure -p is maintained during the duration of the control signal A or the duration of the switching signal S1 for the control valve 36. This can be done by a continuous opening state of the control valve 36 or the detected by the pressure detecting means 24 suction pressure -p in the suction channel 35 is controlled by means of the control device 53 by opening and closing the control valve 36. Due to the non-return valve 42, when a sufficient suction pressure is reached, the valve 36 only has to be opened when the suction pressure has reached a switch-on limit value due to leakage.
  • the switching signal S1 for the control valve 36 is terminated so that it closes, and at the same time a switching signal S2 for the blow-out valve 37 is generated by the trailing edge of the control signal A.
  • This is done by controlling the timer 54, so that the blow-off valve 37 remains open for the fixed or adjustable time of the timer 54.
  • compressed air flows into the suction channel 35 and thus into the suction gripper 7, so that the object 5 is released from the suction gripper 7.
  • the switching signal S2 thus serves as a discharge signal for the object 5.
  • the time length of the switching signal S2 and thus the duration of the ejection pulse can be adjusted.
  • a desired suction vacuum can be adjusted.
  • a switch-on threshold S3 and a switch-off threshold S4 can also be specified. If the sensor signal of the pressure detection device 24 reaches the switch-on threshold S3, then a diagnostic signal D is generated, which at the end of the control signal A after a corresponding decrease in the suction vacuum -p is terminated when the switch-off threshold S4 is reached.
  • This diagnostic signal D can already be formed in the Drukker balanceds recruited 24 as a digital output signal or only in the control electronics 14.
  • This diagnostic signal D can be fed back via the diagnostic or feedback line 46 to the external control device 23.
  • the beginning, the duration and the end of this diagnostic signal D can be monitored by means of corresponding predefinable limit values whose exceeding result in an error message, for example via the display 55, the tone generator 57 or external devices of the external control device 23.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manipulator (AREA)
  • Jet Pumps And Other Pumps (AREA)
EP09000461.5A 2008-01-19 2009-01-15 Dispositif de production sous vide et son procédé de fonctionnement Active EP2080913B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200810005241 DE102008005241A1 (de) 2008-01-19 2008-01-19 Vakuumerzeugervorrichtung und Verfahren zum Betreiben derselben

Publications (3)

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EP2080913A1 true EP2080913A1 (fr) 2009-07-22
EP2080913A8 EP2080913A8 (fr) 2009-09-23
EP2080913B1 EP2080913B1 (fr) 2017-02-22

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EP (1) EP2080913B1 (fr)
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102431787A (zh) * 2011-11-28 2012-05-02 四川长虹电器股份有限公司 清除真空吸盘杂物的方法
WO2013068115A1 (fr) * 2011-11-10 2013-05-16 Festo Ag & Co. Kg Procédé pour faire fonctionner un dispositif de préhension à vide, dispositif de commande de vide et manipulateur
WO2013068114A1 (fr) * 2011-11-10 2013-05-16 Festo Ag & Co. Kg Procédé pour faire fonctionner un dispositif de préhension à vide, dispositif de commande de vide et manipulateur
WO2013079171A1 (fr) * 2011-11-30 2013-06-06 Festo Ag & Co. Kg Dispositif de préhension à vide et son procédé de fonctionnement
WO2013120801A1 (fr) * 2012-02-13 2013-08-22 J. Schmalz Gmbh Procédé de fonctionnement d'un générateur de dépression et dispositif générateur de dépression
CN105276247A (zh) * 2014-06-21 2016-01-27 费斯托股份有限两合公司 止回阀和装备有该止回阀的真空工作设备
CN106881724A (zh) * 2017-02-10 2017-06-23 北京京东尚科信息技术有限公司 机器人端拾器
EP3192756A1 (fr) * 2016-01-15 2017-07-19 Xerex AB Commande d'un système à vide comprenant un générateur de vide
KR20180030106A (ko) * 2015-07-13 2018-03-21 페스토 악티엔 게젤샤프트 운트 코. 카게 진공 그립핑 장치 및 진공 그립핑 장치를 작동하기 위한 방법
CN114173897A (zh) * 2020-06-19 2022-03-11 维泰克株式会社 真空系统用气阀单元

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013021716A1 (de) * 2013-12-20 2015-06-25 Gerresheimer Regensburg Gmbh Vorrichtung und Verfahren zum Aufnehmen von Werkstücken
DE102016204122B4 (de) * 2016-03-14 2018-01-18 Festo Ag & Co. Kg Saughaltevorrichtung und Verfahren zum Betreiben einer Saughaltevorrichtung
DE102023101130A1 (de) 2023-01-18 2024-07-18 J.Schmalz Gmbh Ventilvorrichtung und Unterdruckhandhabungsvorrichtung mit Ventilvorrichtung

Citations (5)

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Publication number Priority date Publication date Assignee Title
US4861232A (en) 1987-05-30 1989-08-29 Myotoku Ltd. Vacuum generating device
US5188411A (en) * 1991-01-24 1993-02-23 John A. Blatt Vacuum cup control apparatus
EP0610501A1 (fr) * 1991-09-10 1994-08-17 Smc Kabushiki Kaisha Machine fonctionnant avec la pression
US5617898A (en) * 1991-09-10 1997-04-08 Smc Kabushiki Kaisha Fluid pressure apparatus
DE20011839U1 (de) 2000-07-07 2000-12-14 Festo AG & Co, 73734 Esslingen Vakuumerzeugervorrichtung

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DE19817426B4 (de) * 1998-04-18 2004-06-09 J. Schmalz Gmbh Greifersystem, insbesondere Vakuumgreifersystem
DE10009167B4 (de) * 2000-02-26 2004-05-06 Festo Ag & Co. Luftspareinrichtung für eine Saugvorrichtung

Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
US4861232A (en) 1987-05-30 1989-08-29 Myotoku Ltd. Vacuum generating device
US5188411A (en) * 1991-01-24 1993-02-23 John A. Blatt Vacuum cup control apparatus
EP0610501A1 (fr) * 1991-09-10 1994-08-17 Smc Kabushiki Kaisha Machine fonctionnant avec la pression
US5617898A (en) * 1991-09-10 1997-04-08 Smc Kabushiki Kaisha Fluid pressure apparatus
DE20011839U1 (de) 2000-07-07 2000-12-14 Festo AG & Co, 73734 Esslingen Vakuumerzeugervorrichtung

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140102669A (ko) * 2011-11-10 2014-08-22 페스토 악티엔 게젤샤프트 운트 코. 카게 진공 그립핑 장치를 작동하기 위한 방법, 진공 제어 장치 및 매니퓰레이터
WO2013068115A1 (fr) * 2011-11-10 2013-05-16 Festo Ag & Co. Kg Procédé pour faire fonctionner un dispositif de préhension à vide, dispositif de commande de vide et manipulateur
WO2013068114A1 (fr) * 2011-11-10 2013-05-16 Festo Ag & Co. Kg Procédé pour faire fonctionner un dispositif de préhension à vide, dispositif de commande de vide et manipulateur
CN104024651B (zh) * 2011-11-10 2017-02-22 费斯托股份有限两合公司 用于运行真空抓取装置的方法、真空控制装置和操纵器
CN102431787A (zh) * 2011-11-28 2012-05-02 四川长虹电器股份有限公司 清除真空吸盘杂物的方法
CN104093992B (zh) * 2011-11-30 2016-12-21 费斯托股份有限两合公司 真空抓取装置和用于运行真空抓取装置的方法
WO2013079171A1 (fr) * 2011-11-30 2013-06-06 Festo Ag & Co. Kg Dispositif de préhension à vide et son procédé de fonctionnement
CN104093992A (zh) * 2011-11-30 2014-10-08 费斯托股份有限两合公司 真空抓取装置和用于运行真空抓取装置的方法
WO2013120801A1 (fr) * 2012-02-13 2013-08-22 J. Schmalz Gmbh Procédé de fonctionnement d'un générateur de dépression et dispositif générateur de dépression
CN104114878A (zh) * 2012-02-13 2014-10-22 J.施迈茨有限公司 用于运行负压操作系统的方法以及用于实施该方法的负压发生器
EP2815131B1 (fr) 2012-02-13 2016-07-20 J. Schmalz GmbH Procédé de fonctionnement d'un générateur de succion et dispositif de générateur de succion
CN104114877A (zh) * 2012-02-13 2014-10-22 J.施迈茨有限公司 用于运行负压发生器的方法以及负压发生装置
US9707686B2 (en) 2012-02-13 2017-07-18 J. Schmalz Gmbh Method for operating a vacuum generator and a vacuum generator for carrying out said method
WO2013120802A1 (fr) * 2012-02-13 2013-08-22 J. Schmalz Gmbh Procédé de fonctionnement d'un générateur de dépression et générateur de dépression pour la mise en œuvre de ce procédé
US9987757B2 (en) 2012-02-13 2018-06-05 J. Schmalz Gmbh Method for operating a vacuum generator and a vacuum generator
CN105276247A (zh) * 2014-06-21 2016-01-27 费斯托股份有限两合公司 止回阀和装备有该止回阀的真空工作设备
CN105276247B (zh) * 2014-06-21 2018-11-09 费斯托股份有限两合公司 止回阀和装备有该止回阀的真空工作设备
KR102252242B1 (ko) 2015-07-13 2021-05-13 페스토 에스이 운트 코. 카게 진공 그립핑 장치 및 진공 그립핑 장치를 작동하기 위한 방법
KR20180030106A (ko) * 2015-07-13 2018-03-21 페스토 악티엔 게젤샤프트 운트 코. 카게 진공 그립핑 장치 및 진공 그립핑 장치를 작동하기 위한 방법
EP3192756A1 (fr) * 2016-01-15 2017-07-19 Xerex AB Commande d'un système à vide comprenant un générateur de vide
US10059533B2 (en) 2016-01-15 2018-08-28 Piab Aktiebolag Controlling a vacuum system comprising a vacuum generator
CN106881724B (zh) * 2017-02-10 2020-07-31 北京京东乾石科技有限公司 机器人端拾器
CN106881724A (zh) * 2017-02-10 2017-06-23 北京京东尚科信息技术有限公司 机器人端拾器
CN114173897A (zh) * 2020-06-19 2022-03-11 维泰克株式会社 真空系统用气阀单元
US20220213980A1 (en) * 2020-06-19 2022-07-07 Vtec Co., Ltd. Air-valve unit for vacuum system
US11639758B2 (en) * 2020-06-19 2023-05-02 Vtec Co., Ltd. Air-valve unit for vacuum system

Also Published As

Publication number Publication date
DE102008005241A1 (de) 2009-07-30
EP2080913A8 (fr) 2009-09-23
EP2080913B1 (fr) 2017-02-22

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