EP3523091A1 - Procédé et dispositif pour déterminer un état de fonctionnement d'une installation de traitement au jet abrasif - Google Patents

Procédé et dispositif pour déterminer un état de fonctionnement d'une installation de traitement au jet abrasif

Info

Publication number
EP3523091A1
EP3523091A1 EP17772684.1A EP17772684A EP3523091A1 EP 3523091 A1 EP3523091 A1 EP 3523091A1 EP 17772684 A EP17772684 A EP 17772684A EP 3523091 A1 EP3523091 A1 EP 3523091A1
Authority
EP
European Patent Office
Prior art keywords
blasting
measuring
bunker
blasting agent
weight
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
EP17772684.1A
Other languages
German (de)
English (en)
Other versions
EP3523091B1 (fr
Inventor
Timo Winkler
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.)
Eisenwerk Wuerth GmbH
Original Assignee
Eisenwerk Wuerth GmbH
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 Eisenwerk Wuerth GmbH filed Critical Eisenwerk Wuerth GmbH
Priority to EP20200330.7A priority Critical patent/EP3792002A1/fr
Priority to PL17772684T priority patent/PL3523091T3/pl
Publication of EP3523091A1 publication Critical patent/EP3523091A1/fr
Application granted granted Critical
Publication of EP3523091B1 publication Critical patent/EP3523091B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C5/00—Devices or accessories for generating abrasive blasts
    • B24C5/06—Impeller wheels; Rotor blades therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
    • B24C7/0092—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed by mechanical means, e.g. by screw conveyors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material

Definitions

  • the invention relates to a method and a device for determining an operating state of a blasting system for treating a surface of a workpiece with a blasting medium.
  • DE 31 31 002 A1 describes an automatic pressure blast machine with accurate and reproducible dosage of the blasting agent.
  • the blast machine includes two main bunkers, each with a minimum and a maximum level switch, which, upon detection of a minimum level, cause automatic refilling from a refill bunker until the maximum level is reached.
  • DE 10 2015 000 632 A1 discloses a method for operating a particle beam system and a particle beam system. In this case, the throughput of the blasting agent during operation is measured by an inductive measuring device.
  • EP 0 456 502 A1 discloses a device for detecting a radiance or intensity during a blasting process. The measurement is based on the detection of sound waves.
  • DE 103 32 713 B3 relates to a beam intensity measuring device for surface treatment devices.
  • the beam intensity measuring device comprises a pulse sensor for measuring the pulse generated by the beam of blasting agent.
  • a blast accelerating device for example a turbine wheel or the like.
  • the blasting medium is returned to the main bunker and is thus ready for further treatment of the surface.
  • the fine fraction increases in the particle size distribution of the blasting medium.
  • the fine fraction is removed from the blasting agent by means of air classification.
  • the blasting agent is metered with new blasting agent.
  • the new blasting agent is usually supplied to falls below a minimum level in a main bunker from a Vorbunker the main bunker. Subsequently, the Vorbunker is usually filled manually again.
  • the blasting agent consumption is usually determined or estimated empirically depending on the surface to be treated. The efficiency of a blasting system is not determined according to the prior art.
  • the object of the invention is to eliminate the disadvantages of the prior art.
  • a method and a device are to be specified which make the determination of an operating state of a blasting system simple and simple enable fast.
  • a possibility should be provided with which the efficiency of the blasting system can be determined.
  • a method for determining an operating condition of a blasting machine for treating a surface of a workpiece with a blasting medium comprising the steps of: continuously measuring a level of blasting agent in a main bunker provided upstream of a blasting device, replenishing blasting media from one Vorbunker provided upstream of the main bunker in the main bunker, so that the level in the main bunker is kept within a predetermined level range,
  • blasting agent is understood to mean a material consisting of granules which has a predetermined particle size distribution in the delivery or initial state.
  • the grains may be formed of different materials such as metal, ceramic, glass or the like.
  • Blasting means accelerating means means a device with which the blasting agent, in particular in the direction of the surface to be treated, is accelerated. This may be, for example, a turbine wheel, an accelerated gas flow or the like.
  • actual blasting duration is understood to mean a time duration during which the blasting medium impinges on the surface to be treated with a predetermined minimum impulse.
  • the minimum impulse can be detected indirectly by the current consumption of the blasting medium accelerating device. Ie. the duration of the jet corresponds to the duration during which the blast accelerating device operates properly and is properly exposed to blasting agent. Abzuippon, however, is for example an idling operation, during which the blasting medium accelerating device is indeed driven, but not supplied with blasting agent.
  • the current consumption of the blast accelerating device can also be detected indirectly by measuring a total current consumption of the blasting system.
  • beam duration time interval is understood to mean a time interval from the measured actual beam duration.
  • the beam duration time interval can be free be determined. Usually, a duration of 24 hours is selected as the beam duration time interval.
  • a "specific point in time” is understood to mean a given selected point in time. For example, this can be the full hour.
  • a mean value is formed from the total weight of blasting agent added during the given blasting duration time interval up to the specific time.
  • the predetermined jet duration time interval is preferably in the range between 6 and 48 hours, in particular 12 to 36 hours, particularly preferably 24 hours. Ie. For example, for a particular point in time, "8 o'clock", a total weight of post-shot blasting agent is determined during a 24-hour jet duration time interval previously used.
  • the step "the determination of the average abrasive consumption” is then repeated for subsequent further specific times. Ie. For example, the average consumption of abrasive media is determined for the specific times "8 o'clock", “9 o'clock” and so on.
  • the mean blast media consumption is an objective measure of the blast machine's efficiency.
  • a blast machine can be optimized. The optimization can be carried out, for example, by selecting a blasting medium with a modified particle size distribution, a modified geometry of a blasting medium accelerating device and / or a modified blasting medium. th predetermined power for operating the Strahlstoffbeschreibungseinrich- tion can be achieved. Apart from that now the consumption of blasting agent can be detected exactly. This allows timely and adequate storage of blasting agents at any time.
  • n * 12 hours is advantageously selected, where n is a natural number. Ie. as beam duration time interval durations of, for example, 12, 24, 36, ... hours are selected.
  • the quotient of the total weight of blasting agent added in the predetermined blasting duration time interval and the duration of the predetermined blasting duration time interval is advantageously formed.
  • the continuous measurement of the fill level in the main bunker by means of an inductive fill level measuring device takes place with metallic blasting agents.
  • inductive measuring devices are well known in the art.
  • an outlet opening is automatically opened for replenishment at Vorbunker for a predetermined period of time.
  • a slide can be provided at the outlet opening, which can be opened and closed, for example, electrically or pneumatically.
  • the proposed interval replenishment is robust and not susceptible.
  • a difference between a first weight of the pre-bunker together with the blasting agent received therein before metering and a second weight of Vorbunkers together with the still remaining therein blasting agent after the post-metering is formed for measuring each post-dosed weights of blasting agent.
  • the measurement of the second weight is expediently carried out immediately after the closing of the outlet opening.
  • the second weight is compared with the previously measured first weight, which was determined before opening the outlet opening.
  • the proposed difference measurement between the first and the second weight is robust and not susceptible. It can be done for example by pressure cells on which the Vorbunker is at least partially supported.
  • the third weights can be summed over the beam duration time interval. From the sum of the third weights, the postdosed total weight of blasting agent can be determined during the blasting duration time interval.
  • the third weights are added to nachdos Arthurm blasting agent over time, the respective
  • a device for determining an operating state of a blasting machine for treating a surface of a workpiece with a blasting medium comprising a data processing device prepared for carrying out the method according to the invention.
  • the apparatus may further comprise a device for measuring a current consumption of the blast accelerating device and / or the blasting system, which is connected to the data processing device for signal transmission or connectable.
  • the measurement of the current consumption of the beam accelerating device and / or the blasting machine allow an energetic evaluation of the efficiency of the blasting machine. For example, it may be indicated what total amount of flow is required to treat a given surface, number of pieces or a given weight of workpieces.
  • the blasting medium consumption in relation to the weight or the surface of the treated workpieces can be specified.
  • the device may comprise a device for measuring the weight of the Vorbunkers, which is connected to the data processing device for signal transmission or connectable.
  • the device may also comprise a pre-bender provided with the means for measuring the weight.
  • the device may comprise a fill level measuring device for measuring the fill level of the main bunker. The fill level measuring device can be connected to the data processing device for signal transmission or connectable.
  • the data processing device can be connected via the Internet with at least one further data processing device for remote data transmission or be connectable.
  • the further data processing device may be a mobile telephone, a terminal at a blasting agent supplier or the like.
  • FIG. 1 is a schematic representation of a blasting machine
  • Fig. 4 shows the beam power over time.
  • the reference numeral 1 generally designates a blasting device in which a blast accelerating device 2, for example a blasting device, is disposed.
  • a blast accelerating device 2 for example a blasting device
  • a turbine for accelerating blasting agent 3 on a
  • Reference numeral 5 generally designates a main hopper, which is arranged upstream of the jet device 1 with respect to a conveying direction of the blasting means 3.
  • the reference numeral 7 designates a first slide which can be selectively opened and closed to provide blasting medium 3.
  • the reference numeral 8 designates a return device running from the jet device 1 to the main bunker 5, through which the blasting medium 3 is returned to the main bunker 5 after an air separation (not shown here in greater detail).
  • the return device 8 comprises a return line in which, for example, a screw conveyor (not shown here) and / or a cup conveyor (not shown here) are accommodated.
  • a pre-bunker generally designated by the reference numeral 9, which is provided with a second slider 10.
  • the second slide 10 can optionally be opened and closed, so that at intervals blasting agent 3 from the Vorbunker 9 the main bunker 5, in particular via the return device 8, can be supplied.
  • the intervalwise replenishment of the blasting agent 3 can be done automatically depending on a level in the main bunker 5.
  • the Vorbunker 9 is supported via pressure cells 1 1 against a substrate U.
  • the reference numeral 12 schematically indicates a data processing device.
  • the data processing device 12 is connected via a first signal line 13 to the blasting medium accelerating device 2, via a second signal line 14 to the fill level measuring device 6 and via a third signal line 15 to the pressure measuring cans 1 1.
  • the reference numeral 16 denotes a switch with which an opening or closing state of the lid 17 of the pre-bunker 9 is detected.
  • the switch 16 is connected to the data processing device 12 via a fourth signal line 18.
  • Reference numeral 19 denotes a fifth signal line through which signals or data can be transmitted from the controller 12 to the second slider 10 for closing and opening thereof.
  • the first signal line 13 signals or data are supplied, which correspond to the power consumption of the blasting medium acceleration device 2.
  • the second signal line 14 signals or data are transmitted, which correspond to the level of the blasting agent 3 in the main bunker 5.
  • the third signal line 15 signals or data are transmitted, which correspond to the weight of the Vorbunkers 9.
  • Via the fourth signal line 18 signals or data are transmitted, which indicate whether the lid 17 is opened or closed.
  • a further device (not shown here) for measuring the current consumption of the entire jet device 1 can be provided.
  • the total current consumption also includes the current required for transporting the blasting medium 3 by means of the return device.
  • the return device 8 comprises, for example, a bucket elevator.
  • Blasting agent 3 is thrown against the surface of a workpiece 4 with the blast accelerating device 2, as a result of which the surface is removed. As a result, a fine grain fraction, which is unsuitable for blasting the surface of the workpiece 4, is formed in the blasting medium 3.
  • the fine grain fraction is removed from the blasting medium 3 by means of a conventional air classification.
  • the correspondingly prepared blasting agent 3 is returned by the blasting device 1 through the return device 8 to the main bunker 5.
  • the level of blasting agent 3 is continuously measured by means of the fill level measuring device 6. The corresponding measured values are supplied to the data processing device 12 via the second signal line 14.
  • the second slide 10 is opened at Vorbunker 9 for a predetermined period of time.
  • 8 new blasting agent 3 is supplied to the main bunker 5 at intervals over the return device. This is done before opening of the second slider 10, a first weight of the pre-bunker 9, including blasting agent 3 received therein, is measured by means of the pressure measuring cans 11. The first weight is stored in the data processing device 12. After closing the second slide 10, a second weight of the pre-bunker 9 is measured together with the blasting agent 3 still remaining therein. From the difference between the first weight and the second weight results in a third weight, which corresponds to the amount of postdosed blasting agent 3.
  • the weight of postdosed blasting agent 3 or the resulting quantity is detected over time by the data processing device 12 (see FIG. 2). Furthermore, the power consumption of the blast accelerating device 2 over time is detected with the data processing device 12 by the first signal line 13 (see FIG. 3).
  • a limit value is expediently specified. If the power consumption is above the limit value, the blasting medium acceleration device 2 is properly loaded with blasting medium 3. Above the limit, the beam acceleration device 2 is in "beam operation". If the limit value for the current consumption is undershot, this indicates an improper operation of the blasting medium acceleration device 2 or its idling. Improper operation may be caused, for example, by worn turbine blades, bearing damage or the like. An idle can be caused for example by a delivery interruption in the return device 8.
  • an alarm signal is advantageously triggered by means of the data processing device 12.
  • the current consumption of the beam acceleration device 2 is recorded by means of the data processing device 12 over time. It will be advantageous to determine the actual beam duration exclusively those Time intervals added, in which the current consumption is above the limit.
  • Fig. 4 shows the average blasting agent consumption over time.
  • a value is advantageously plotted on the y-axis for the respective particular time points. For example, for the time 08:30 o'clock as follows:
  • yo8: 3o clock ⁇ (trailing third weights in the selected beam duration time interval) / (number of hours of the beam duration time interval)
  • the average blasting agent consumption for the specific time is 08:30 o'clock 20 kg / h.
  • 24 x 20 kg 480 kg of blasting agent were used up.
  • the average consumption of abrasive is 30 kg / h, d. H.
  • the particle size distribution of the blasting agent 3 a pulse transmitted by the blasting medium accelerating device 2 to the blasting means 3, etc., can be varied. Furthermore, depending on the workpiece 4 to be machined, previously determined optimum beam powers can be set from the outset. Because of the continuous detection of the weight removed from the pre-bunker 9 of blasting agent 3 (see FIG. 2), it is possible by means of the data processing device 12 via the Internet automatically via a supplier Subsequent delivery to blasting medium 3 trigger. This can be advantageously avoided unwanted delivery interruptions.
  • the switch 16 By means of the switch 16 is monitored whether the lid 17 is opened or closed sen.
  • the second slider 10 When the lid 17 is open, the second slider 10 is automatically locked, ie as long as the lid 17 is opened, there is no replenishment of blasting agent 3 from the Vorbunker 9 in the return device 8. This avoids that when refilling the Vorbunkers 9, the measurement of the weight postdosed blasting agent 3 is falsified.
  • the switch 16 is closed or the lid 17 is closed, automatic replenishment of blasting medium 3 is possible, as described above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)

Abstract

L'invention concerne un procédé permettant de déterminer un état de fonctionnement d'une installation de traitement au jet abrasif pour traiter une surface d'une pièce (4) avec un matériau abrasif (3), ledit procédé comprenant les étapes suivantes : mesurer en continu un niveau de remplissage d'un matériau abrasif (3) dans un réservoir principal (5) disposé en amont d'un dispositif de traitement au jet abrasif (1), effectuer un remplissage d'appoint en matériau abrasif (3), à partir d'un réservoir préliminaire (9) situé en amont du réservoir principal (5) jusque dans le réservoir principal (5), de sorte que le niveau de remplissage du réservoir principal (5) demeure dans une plage de niveaux de remplissage prédéfinie, mesurer les poids redosés du réservoir préliminaire (9) au réservoir principal (5) et détecter les poids mesurés dans le temps, mesurer une consommation de courant d'un dispositif d'accélération du matériau abrasif (2) et mesurer une durée de traitement abrasif effective, déterminer un intervalle temps de durée de traitement au jet abrasif pour un instant déterminé, sur la base du poids total de matériau abrasif (3) redosé pendant l'intervalle temps de la durée de traitement au jet abrasif jusqu'à l'instant déterminé, répéter l'étape de la détermination de la consommation de matériau abrasif pour d'autres instants déterminés suivants et afficher chaque consommation de matériau abrasif moyenne pendant chacun des instants déterminés.
EP17772684.1A 2016-10-04 2017-09-21 Procédé et dispositif pour déterminer un état de fonctionnement d'une installation de traitement au jet abrasif Active EP3523091B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20200330.7A EP3792002A1 (fr) 2016-10-04 2017-09-21 Dispositif pour déterminer un état de fonctionnement d'une installation de traitement au jet abrasif
PL17772684T PL3523091T3 (pl) 2016-10-04 2017-09-21 Sposób i przyrząd do wyznaczania stanu eksploatacyjnego układu strumieniowego

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102016219215 2016-10-04
DE102016223190.1A DE102016223190B3 (de) 2016-10-04 2016-11-23 Verfahren und Vorrichtung zur Ermittlung eines Betriebszustands einer Strahlanlage
PCT/EP2017/073843 WO2018065220A1 (fr) 2016-10-04 2017-09-21 Procédé et dispositif pour déterminer un état de fonctionnement d'une installation de traitement au jet abrasif

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP20200330.7A Division EP3792002A1 (fr) 2016-10-04 2017-09-21 Dispositif pour déterminer un état de fonctionnement d'une installation de traitement au jet abrasif
EP20200330.7A Division-Into EP3792002A1 (fr) 2016-10-04 2017-09-21 Dispositif pour déterminer un état de fonctionnement d'une installation de traitement au jet abrasif

Publications (2)

Publication Number Publication Date
EP3523091A1 true EP3523091A1 (fr) 2019-08-14
EP3523091B1 EP3523091B1 (fr) 2022-02-23

Family

ID=59980817

Family Applications (2)

Application Number Title Priority Date Filing Date
EP20200330.7A Withdrawn EP3792002A1 (fr) 2016-10-04 2017-09-21 Dispositif pour déterminer un état de fonctionnement d'une installation de traitement au jet abrasif
EP17772684.1A Active EP3523091B1 (fr) 2016-10-04 2017-09-21 Procédé et dispositif pour déterminer un état de fonctionnement d'une installation de traitement au jet abrasif

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP20200330.7A Withdrawn EP3792002A1 (fr) 2016-10-04 2017-09-21 Dispositif pour déterminer un état de fonctionnement d'une installation de traitement au jet abrasif

Country Status (6)

Country Link
EP (2) EP3792002A1 (fr)
DE (2) DE102016223190B3 (fr)
DK (1) DK3523091T3 (fr)
ES (1) ES2913060T3 (fr)
PL (1) PL3523091T3 (fr)
WO (1) WO2018065220A1 (fr)

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Publication number Priority date Publication date Assignee Title
DE102021101036A1 (de) 2021-01-19 2022-07-21 Eisenwerk Würth GmbH Vorrichtung zum Behandeln einer Oberfläche eines Werkstücks mit einem Strahlmittel
DE102021115034A1 (de) * 2021-06-10 2022-12-15 Rösler Holding Gmbh Verfahren zum Betrieb einer Strahlanlage
DE102021132554A1 (de) 2021-12-09 2023-06-15 Rösler Holding Gmbh System und Verfahren zur Ermittlung eines Verschleißzustandes eines Schleuderrads
JP2024095867A (ja) * 2022-12-29 2024-07-11 新東工業株式会社 ショットブラスト装置、制御方法、制御プログラム
CN119328678A (zh) * 2024-11-25 2025-01-21 西安理工大学 包含加工过程监测的喷丸加工装置及方法

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CH674096A5 (fr) * 1988-01-19 1990-04-30 Lonza Ag
IT1238882B (it) * 1990-02-28 1993-09-04 Giorgini Maggi Srl Procedimento per il lavaggio ed il controllo della composizione di torbide abrasive usate nel taglio di graniti e pietre similari e relativa apparecchiatura.
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JPH06143147A (ja) * 1992-11-04 1994-05-24 Inax Corp ショットブラスト装置の制御方法
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Also Published As

Publication number Publication date
DE102016223190B3 (de) 2017-10-19
ES2913060T3 (es) 2022-05-31
WO2018065220A1 (fr) 2018-04-12
EP3792002A1 (fr) 2021-03-17
PL3523091T3 (pl) 2022-06-20
DK3523091T3 (da) 2022-04-19
EP3523091B1 (fr) 2022-02-23
DE202017105608U1 (de) 2017-11-15

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