WO2006000265A1 - Vorrichtung zum erzeugen eines unterdrucks - Google Patents
Vorrichtung zum erzeugen eines unterdrucks Download PDFInfo
- Publication number
- WO2006000265A1 WO2006000265A1 PCT/EP2005/003504 EP2005003504W WO2006000265A1 WO 2006000265 A1 WO2006000265 A1 WO 2006000265A1 EP 2005003504 W EP2005003504 W EP 2005003504W WO 2006000265 A1 WO2006000265 A1 WO 2006000265A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ejector
- control
- display
- ejectors
- valve
- Prior art date
Links
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
- F04F5/46—Arrangements of nozzles
-
- 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
- F04F5/46—Arrangements of nozzles
- F04F5/466—Arrangements of nozzles with a plurality of nozzles arranged in parallel
-
- 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 device for generating a negative pressure, with a plurality of ejectors.
- Ejectors are known in a variety of applications and typically serve to create negative pressure using compressed air. Ejectors offer the significant advantage that they can be connected to the generally existing compressed air network and therefore no vacuum lines are required. The ejectors are supplied with compressed air and generate according to the venturi principle, the negative pressure and are usually located directly in the area where the negative pressure is needed. There are therefore no long vacuum channels required, which would have to be evacuated constantly, so that in the case of the use of ejectors, the negative pressure can be provided immediately.
- a device for generating a negative pressure of the type mentioned with a plurality of ejectors and a receiving device for the ejectors in that the receiving device has at least one connection for a compressed air line and this connection opens into a Druck Kunststoffverteilsystem to which a compressed air channel of each Ejector is connected, and for each ejector, a vacuum channel is provided, which is connectable to the vacuum system of the ejector, wherein the receiving device forms a holding frame and a quick-change system for the ejectors and the receiving device is connected via control lines to the ejectors and connected to a machine control.
- the device according to the invention has a receiving device which is equipped with the ejectors.
- the receiving device has a compressed air distribution system, to which the compressed air channels of the individual ejectors are connected.
- the receiving device are provided with a holding frame can, in which the ejectors are used, be kept safe. It is no longer necessary to prepare the gripping device itself for receiving the ejectors, which may mean a great deal of effort, since the ejectors not only have to be fastened but also placed so that the compressed-air and vacuum hoses are guided without kinking.
- the receiving device is attached to the gripping device, for which conventional fastening means, for example screws or clamping devices can be used.
- the holding frame has the advantage that plug-in connections for the power supply and for data lines are present, via which the ejector is supplied with energy and via which data can be entered into data processing equipment in the ejector and data can be read out of the ejector. In this way, the ejector is quick and easy and also safely connected, for example, to a machine control.
- the receiving device also has a quick-change system for the ejectors, so that they can be used in particular without the use of a tool and the receiving device can be removed again.
- the ejector has a bistable valve for blocking the compressed air channel.
- This bistable valve can be used to switch the supply of compressed air into the ejector on or off. In this way, the vacuum generation is specifically switched on or off.
- the bistable valve can be controlled via a command of the machine control, which is the case, for example, when it is detected that no workpiece is sucked in, since the gripper is not occupied.
- the machine control is in the Usually known, which form the workpiece has and which grippers must be activated to suck the workpiece.
- the non-active grippers ie the grippers that are not on the workpiece, should not suck in air, so as not to cause unnecessary noise and to avoid unnecessary energy consumption.
- the bistable valve is controlled via a command of a sensor contained in the ejector, the sensor detects, for example, the amount of negative pressure and the negative pressure generation is switched off by closing the bistable valve when the desired negative pressure is reached. This is the case when the workpiece has been completely sucked by the respective gripper. In this way, compressed air can be saved.
- the valve is designed to be self-holding, so that it retains its instantaneous position in the event of a voltage drop. If no workpiece is sucked in, the valve remains in its closed position, whereas the valve remains in the open position in the case of a suction gripper which has sucked in a workpiece, or if the necessary negative pressure was reached and the valve has assumed its closed position, changes to the open position, to ensure that the workpiece does not fall or that the vacuum on the workpiece does not collapse.
- the valve is designed as a feed valve, which is controllable via a portion of the air flow required for an air control valve.
- the ejector has a first monitoring device with which the number of control processes can be detected.
- the control operations of the ejector for example, the switching on and off of the bistable valve in the compressed air channel depending on the presence or the amount of negative pressure.
- it is recorded, for example, how often or how quickly or more often than normally the negative pressure is adjusted to the desired value.
- the monitoring device causes the control is switched off for safety's sake and permanent negative pressure is generated.
- a "reset" via the machine control or ejector or wireless is required, which must be done by a conscious machine operator.
- the parameters from which such errors are detected are adjustable or fixed.
- the ejector has a second monitoring device with which the evacuation time can be detected.
- a second monitoring device with which the evacuation time can be detected.
- an ejector typically requires 200 ms to build up the required vacuum. If this evacuation time is exceeded by a preset amount, an error message is issued. Exceeding the preset evacuation time is due, for example, to a leakage in the vacuum line or in the seal between the suction gripper and the workpiece, by clogging of the flow paths, in porous workpieces, in insufficient compressed air, etc.
- there may be other sensors to them To limit error message.
- a pressure sensor for the compressed air can determine whether it has the required pressure.
- a control device which controls the ejector when the suction process ends is provided, which switches the ejector from the suction state into the blow-off state. The duration of the blow-off is fixed.
- the blow-off time can also be adjustable or variable.
- the machine control has priority and determines when is switched to the blow-off after the suction, i. determines the pause or delay between the suction process and the blow-off process.
- the machine controller determines the blow-off time and / or the blow-off pressure.
- these values are given by the machine control, but the ejector takes precedence. For example, it can be set on the ejector how long the blow-off process lasts, this value being superimposed on the control command of the machine control. Which device has priority can be set on the ejector.
- the ejector has a counting device with which the number of sucked workpieces, the number of valve position changes, the number of control errors and / or the like can be counted. This information can be used, for example, to set the maintenance intervals. In addition, comparisons can be made as to whether the number of actual operations corresponds to the number of sucked and handled workpieces. These counting processes are not only valid for the suction process but also for the blow-off process. The number of control errors can also affect the quality of the workpieces Vacuum suction, the supply and discharge lines, the machine control itself and the ejector are evaluated.
- Data determined in the evaluation device are transmitted to the machine control, for example via a transmission device. This can be done at the same time, but in the ejector can also be provided a memory in which these data collected are stored. The data is then read at fixed times from this memory. According to the invention, the readout can also be wireless.
- the ejector has a self-diagnosis device.
- the quality state of the ejector can be determined and you can prevent malfunction in advance.
- trends can be determined and determined by the fact that, for example, the evacuation time permanently extended, that accumulate in one or more valves switching changes and the like.
- the self-diagnosis device is preferably provided with a valve closing the suction channel. If the suction channel is closed by the valve for a self-diagnosis then, for example, the evacuation time can be determined and compared with reference values. This also applies to the maximum achievable negative pressure.
- the ejector has an evaluation device for the signals detected by sensors of the ejector.
- This evaluation device is independent of the machine control or of the evaluation of the machine control, so that all detected by the sensors of the ejector signals are evaluated directly in the ejector, so that the ejector is independent of the machine control.
- a particularly preferred embodiment of an ejector provides that the ejector has a display that can be dimmed or switched off. Since the display is only needed for part operations or to read values, the display is dimmed or switched off the rest of the time. This can be done either manually or automatically, the display automatically reduces the luminosity or shuts off after expiration of a particular pre-entered period of time.
- the display can be either an analog display or a digital display, with analog displays not only the lighting but also the display itself returns to its rest position, if the display is not needed.
- the display can be switched on manually and / or by the machine control, or the display automatically switches on when an error message appears. Switched displays therefore signal a state deviating from the normal state, so that those ejectors with the display switched on can be found quickly.
- Another visual distinguishing feature is that the display is multicolored. For example, a value above a threshold may be displayed in red and all values within a desired range may be displayed in green. Red displays therefore simply indicate a fault condition. The value itself can be displayed in red or the display has an additional red light.
- Another visual feature may be a flashing code that flashes quickly or slowly, depending on what you are flashing Importance or urgency of the information to be transmitted.
- the display In order to be able to see or see the display from a wide or large viewing angle, it is arranged according to the invention along an edge of the ejector. In this case, the display according to the invention projects beyond the surface of the ejector. In this way a viewing angle of more than 270 ° is possible.
- the display consists for example of a provided in the edge and the surface of the ejector towering light emitting diode, which in particular turns from green to red.
- Figure 1 is a perspective view of a receiving device with a total of 6 arranged therein ejectors
- Figure 2 is a perspective view of an ejector
- Figure 3 shows a perspective view of the back of an ejector showing a connection to the compressed air and a connection to the suction channel.
- the reference numeral 10 in total a Receiving device for a total of six ejectors 12 shown, wherein the receiving device has a connection 14 for the supply of compressed air and a total of six ports 16 for connection of suction lines.
- the connection 14 opens into a compressed air distribution system 15 to which the ejectors 12 are connected via distribution plates 17, which will be described in more detail below.
- channels for the suction air are also provided, which open into the terminals 16.
- the receiving device 10 has plug connections for the electrical contacting of the ejectors 12, wherein the plug-in connections are arranged in an electrical distribution system 18.
- control and regulating devices and monitoring devices, counting devices, evaluation and self-diagnostic devices are provided with which the individual ejectors 12 can be controlled or via which the control of the ejectors 12 takes place.
- Facilities may also be located within the ejectors 12.
- the receiving device 10 has a quick-change system, via which the ejectors 12 individually taken from the receiving device 10 and can be used in this again.
- FIG. 2 shows a single ejector 12, which has a silencer 22 for the compressed air leaving the ejector 12 on its rear side.
- the compressed air passes through a connection provided on the underside, which opens out through the distribution plate 17 into the ejector 12.
- a plug 24 can be seen, which can be plugged into the electrical distribution system 18.
- the top 26 of the ejector 12 has various buttons 28 and there are two displays 32, 30 and 34 are provided.
- the display 32 is a digital display and the display 30 is for example an LED and serves as a programming aid. These Display 32 is, as described above, dimmable and / or disabled.
- the display 34 is a colored display, in particular a multi-colored display, which projects beyond the surface of the upper side 26 and therefore can be seen from both sides and from the front and from above from a viewing angle ⁇ of more than 270 °. This display 34 may also be dimmable and / or disabled and alternates between the colors red and green.
- the ejector 12 also has on its front side 36 easily accessible adjusting means 38 in the form of adjusting screws with which limit values can be set. As a result, e.g. a throttle for adjusting the blow-off be adjusted. Limit values can also be set via the push-buttons 28, limit values for the number of switching numbers, etc. being adjustable as limit values, for example the blow-off pressure, the suction pressure, suction times, blow-off times, the pause between suction and blow-off.
- FIG. 3 shows the rear side 40 of the ejector 12 to which the silencer 22 is fastened.
- a further plug 42 can be seen, which also opens into the electrical distribution system 18 and via which data and / or electrical energy are transmitted.
- the slim shape of the ejector 12 allows a dense packing of a plurality of ejectors 12 in the receiving device 10, whereby a plurality of hose lines is saved.
- the housing 20 can also be provided with push buttons 28 and displays 32 and 34, via which the arranged in the receiving device 10 ejectors 12 are set together or via which data these ejectors 12 are displayed.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Jet Pumps And Other Pumps (AREA)
- Manipulator (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007516993A JP2008507649A (ja) | 2004-06-23 | 2005-04-04 | 負圧を生成する装置 |
EP05733309.8A EP1759119B1 (de) | 2004-06-23 | 2005-04-04 | Vorrichtung zum erzeugen eines unterdrucks |
US11/630,348 US20080291235A1 (en) | 2004-06-23 | 2005-04-04 | Device for Generating an Underpressure |
CN2005800207449A CN1989348B (zh) | 2004-06-23 | 2005-04-04 | 用于产生负压的装置 |
US12/834,027 US8628186B2 (en) | 2004-06-23 | 2010-07-12 | Method and device for monitoring negative pressure loss in a negative pressure generating device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004031924A DE102004031924B4 (de) | 2004-06-23 | 2004-06-23 | Vorrichtung zum Erzeugen eines Unterdrucks |
DE102004031924 | 2004-06-23 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/630,348 A-371-Of-International US20080291235A1 (en) | 2004-06-23 | 2005-04-04 | Device for Generating an Underpressure |
US12/834,027 Continuation US8628186B2 (en) | 2004-06-23 | 2010-07-12 | Method and device for monitoring negative pressure loss in a negative pressure generating device |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006000265A1 true WO2006000265A1 (de) | 2006-01-05 |
Family
ID=34965026
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2005/003504 WO2006000265A1 (de) | 2004-06-23 | 2005-04-04 | Vorrichtung zum erzeugen eines unterdrucks |
Country Status (7)
Country | Link |
---|---|
US (2) | US20080291235A1 (de) |
EP (1) | EP1759119B1 (de) |
JP (1) | JP2008507649A (de) |
KR (1) | KR20070027720A (de) |
CN (1) | CN1989348B (de) |
DE (2) | DE102004031924B4 (de) |
WO (1) | WO2006000265A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100303641A1 (en) * | 2007-12-04 | 2010-12-02 | Festo Ag & Co. Kg | Vacuum Generating Device and Method for the Operation Thereof |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007061820A1 (de) * | 2007-12-20 | 2009-06-25 | Festo Ag & Co. Kg | Vakuumerzeugervorrichtung und Verfahren zu ihrem Betreiben |
EP2300721B1 (de) * | 2008-11-21 | 2017-04-12 | FESTO AG & Co. KG | Vakuumsteuereinrichtung |
FR2945086B1 (fr) * | 2009-05-04 | 2016-10-21 | Sapelem | Pompe a air pneumatique et installation d'aspiration et de soufflage correspondante |
DE102009047083C5 (de) * | 2009-11-24 | 2013-09-12 | J. Schmalz Gmbh | Druckluftbetriebener Unterdruckerzeuger oder Unterdruckgreifer |
DE102011118168B4 (de) * | 2011-11-10 | 2015-12-31 | Festo Ag & Co. Kg | Verfahren zum Betreiben einer Vakuumgreifeinrichtung, Vakuumsteuereinrichtung und Manipulator |
DE102011118173B4 (de) * | 2011-11-10 | 2015-10-08 | Festo Ag & Co. Kg | Verfahren zum Betreiben einer Vakuumgreifeinrichtung, Vakuumsteuereinrichtung und Manipulator |
DE102011119785B3 (de) * | 2011-11-30 | 2012-12-13 | Festo Ag & Co. Kg | Vakuumgreifeinrichtung und Verfahren zum Betreiben einer Vakuumgreifeinrichtung |
US9987757B2 (en) | 2012-02-13 | 2018-06-05 | J. Schmalz Gmbh | Method for operating a vacuum generator and a vacuum generator |
JP2013226799A (ja) * | 2012-03-30 | 2013-11-07 | Seiko Epson Corp | 印刷装置の制御方法、印刷装置 |
JP6186157B2 (ja) * | 2013-04-03 | 2017-08-23 | 学校法人 関西大学 | 吸着機構 |
ES2845927T3 (es) * | 2014-06-26 | 2021-07-28 | Schmalz J Gmbh | Instalación para la manipulación de piezas de trabajo |
DE102015206717B3 (de) * | 2015-04-15 | 2016-08-18 | Festo Ag & Co. Kg | Vakuumerzeugervorrichtung |
JP6612060B2 (ja) * | 2015-06-03 | 2019-11-27 | ローランドディー.ジー.株式会社 | 人工歯作製システム |
KR101929359B1 (ko) * | 2016-12-08 | 2018-12-14 | 이순일 | 접지 흡인 장치 및 이를 포함한 정합 장치 |
DE102022110636A1 (de) | 2022-05-02 | 2023-11-02 | Festo Se & Co. Kg | Vakuumerzeugervorrichtung |
DE102022121986A1 (de) | 2022-08-31 | 2024-02-29 | Festo Se & Co. Kg | Ventilanordnung |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4861232A (en) * | 1987-05-30 | 1989-08-29 | Myotoku Ltd. | Vacuum generating device |
EP0610501A1 (de) * | 1991-09-10 | 1994-08-17 | Smc Kabushiki Kaisha | Flüssigkeitsdruckmaschine |
US5617898A (en) * | 1991-09-10 | 1997-04-08 | Smc Kabushiki Kaisha | Fluid pressure apparatus |
US6182702B1 (en) * | 1996-07-22 | 2001-02-06 | Ab Rexroth Mecman | Device for generating an underpressure |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH0330640Y2 (de) * | 1986-06-30 | 1991-06-27 | ||
JP3439482B2 (ja) * | 1991-02-22 | 2003-08-25 | Smc株式会社 | 流体機器 |
JP3349517B2 (ja) * | 1991-09-09 | 2002-11-25 | エスエムシー株式会社 | 真空供給装置 |
JP3416160B2 (ja) * | 1991-09-10 | 2003-06-16 | Smc株式会社 | 流体圧機器 |
JP3318591B2 (ja) * | 1991-09-10 | 2002-08-26 | エスエムシー株式会社 | 流体ユニット |
JP2606315Y2 (ja) * | 1992-10-27 | 2000-10-23 | エスエムシー株式会社 | 真空圧発生器 |
JP3550879B2 (ja) * | 1996-05-30 | 2004-08-04 | ダイキン工業株式会社 | 真空排気装置 |
JP3678950B2 (ja) * | 1999-09-03 | 2005-08-03 | Smc株式会社 | 真空発生用ユニット |
JP3656820B2 (ja) * | 2000-05-23 | 2005-06-08 | 株式会社日立ハウステック | エアポンプ装置および該エアポンプ装置を備えた汚水浄化装置 |
DE20102400U1 (de) * | 2001-02-10 | 2001-04-26 | Man Roland Druckmaschinen Ag, 63069 Offenbach | Bogenführungszylinder mit einem pneumatisch steuerbaren Bogenhaltesystem |
KR100454082B1 (ko) * | 2001-10-15 | 2004-10-26 | 한국뉴매틱(주) | 진공 발생/파기 장치 |
KR100433284B1 (ko) * | 2001-11-01 | 2004-05-28 | 한국뉴매틱(주) | 진공이송 시스템용 부압 발생/해제 장치 |
DE20120609U1 (de) * | 2001-12-20 | 2002-03-21 | Beck IPC GmbH, 35578 Wetzlar | Diagnoseeinrichtung für eine fluidtechnische Einrichtung sowie damit ausgestattete fluidtechnische Einrichtung |
-
2004
- 2004-06-23 DE DE102004031924A patent/DE102004031924B4/de not_active Expired - Lifetime
-
2005
- 2005-04-04 JP JP2007516993A patent/JP2008507649A/ja active Pending
- 2005-04-04 CN CN2005800207449A patent/CN1989348B/zh active Active
- 2005-04-04 EP EP05733309.8A patent/EP1759119B1/de active Active
- 2005-04-04 WO PCT/EP2005/003504 patent/WO2006000265A1/de active Application Filing
- 2005-04-04 KR KR1020077001419A patent/KR20070027720A/ko active Search and Examination
- 2005-04-04 US US11/630,348 patent/US20080291235A1/en not_active Abandoned
- 2005-04-04 DE DE202005021945U patent/DE202005021945U1/de not_active Expired - Lifetime
-
2010
- 2010-07-12 US US12/834,027 patent/US8628186B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4861232A (en) * | 1987-05-30 | 1989-08-29 | Myotoku Ltd. | Vacuum generating device |
EP0610501A1 (de) * | 1991-09-10 | 1994-08-17 | Smc Kabushiki Kaisha | Flüssigkeitsdruckmaschine |
US5617898A (en) * | 1991-09-10 | 1997-04-08 | Smc Kabushiki Kaisha | Fluid pressure apparatus |
US6182702B1 (en) * | 1996-07-22 | 2001-02-06 | Ab Rexroth Mecman | Device for generating an underpressure |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100303641A1 (en) * | 2007-12-04 | 2010-12-02 | Festo Ag & Co. Kg | Vacuum Generating Device and Method for the Operation Thereof |
US8678776B2 (en) * | 2007-12-04 | 2014-03-25 | Festo Ag & Co. Kg | Vacuum generating device and method for the operation thereof |
Also Published As
Publication number | Publication date |
---|---|
DE202005021945U1 (de) | 2011-10-27 |
US8628186B2 (en) | 2014-01-14 |
US20080291235A1 (en) | 2008-11-27 |
JP2008507649A (ja) | 2008-03-13 |
DE102004031924A1 (de) | 2006-01-12 |
EP1759119A1 (de) | 2007-03-07 |
CN1989348A (zh) | 2007-06-27 |
US20100277331A1 (en) | 2010-11-04 |
CN1989348B (zh) | 2011-09-14 |
EP1759119B1 (de) | 2018-08-08 |
DE102004031924B4 (de) | 2006-05-04 |
KR20070027720A (ko) | 2007-03-09 |
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