EP3565972B1 - Dispositif pour le refoulement de matériau visqueux - Google Patents

Dispositif pour le refoulement de matériau visqueux Download PDF

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Publication number
EP3565972B1
EP3565972B1 EP17817740.8A EP17817740A EP3565972B1 EP 3565972 B1 EP3565972 B1 EP 3565972B1 EP 17817740 A EP17817740 A EP 17817740A EP 3565972 B1 EP3565972 B1 EP 3565972B1
Authority
EP
European Patent Office
Prior art keywords
conveyor
piston
container
viscous material
conveying
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.)
Active
Application number
EP17817740.8A
Other languages
German (de)
English (en)
Other versions
EP3565972A1 (fr
Inventor
Gerrit ENDERLE
Thomas Hausner
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.)
Atlas Copco IAS GmbH
Original Assignee
Atlas Copco IAS 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 Atlas Copco IAS GmbH filed Critical Atlas Copco IAS GmbH
Publication of EP3565972A1 publication Critical patent/EP3565972A1/fr
Application granted granted Critical
Publication of EP3565972B1 publication Critical patent/EP3565972B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B13/00—Pumps specially modified to deliver fixed or variable measured quantities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
    • B67D7/06—Details or accessories
    • B67D7/58—Arrangements of pumps
    • B67D7/62—Arrangements of pumps power operated
    • B67D7/64—Arrangements of pumps power operated of piston type
    • B67D7/645—Barrel pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F04B49/065—Control using electricity and making use of computers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/10—Other safety measures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/06—Venting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2201/00—Pump parameters
    • F04B2201/02—Piston parameters
    • F04B2201/0202—Linear speed of the piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/14—Pistons, piston-rods or piston-rod connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00—Working fluid
    • F05B2210/10—Kind or type
    • F05B2210/11—Kind or type liquid, i.e. incompressible

Definitions

  • the invention relates to a device for conveying viscous material according to the preamble of claim 1 and a method for conveying viscous material, in which such a device is used.
  • Devices which are used to convey, for example, adhesives, sealants or insulating materials from a container to a processing station. They are used in particular in the automotive industry when viscous materials have to be applied to body parts. Such devices usually have a follower plate which rests on the surface of the material in the container and follows this surface when the material level drops. For this purpose a lifting device is then provided, which is used to lower and raise the follower plate. The material is removed from the container by means of a feed pump connected to a material outlet in the follower plate, the follower plate tracking the material surface.
  • the follower plate also presses on the material surface, so that due to this pressure the material is pressed into the material outlet, while the follower plate rests sealingly against a circumferential container wall.
  • the follower plate rests sealingly against a circumferential container wall.
  • air bubbles in the container this cannot be seen before the material is applied.
  • material containing air bubbles is conveyed and applied to a workpiece, this usually means that the applied material cannot adequately develop its adhesive, sealing or insulating effect. Often the components are coated in this way then unsuitable for further processing and must be thrown away as scrap.
  • a device for conveying viscous material is from DE 197 13 938 A1 known.
  • This delivery device for viscous material has a sensor that detects the speed of the piston rod of the pump that is delivering the viscous material. The measuring sensor is used to keep the speed of the delivery piston connected to the piston rod constant by means of a control device.
  • a similar device is from the DE 20 2013 009 164 U1 known. This device has a measuring transducer to control the delivery volume flow. However, neither of the two devices is suitable for detecting air bubbles in the material being conveyed.
  • a device of the type mentioned is from the EP 0 482 579 A1 known, at which the speed of the delivery piston is measured in order to avoid pressure fluctuations by synchronizing two pumps.
  • the invention is based on the knowledge found by the applicant that the speed of the delivery piston during the delivery process can vary depending on the material consistency.
  • the applicant has found out through experiments that the speed of the delivery piston during the delivery stroke is constant at least within a tolerance range while the material consistency remains constant. If the conveyed material contains air bubbles, this leads to a significant change in the speed of the delivery piston during the delivery stroke.
  • it is therefore proposed to measure the speed of the delivery piston during the delivery stroke by means of a measuring device, so that in the event of a change in the measured speed, conclusions can be drawn about a change in the material consistency, in particular the presence of air bubbles, so that appropriate measures can be initiated.
  • the measuring device has a control unit for controlling the delivery of the viscous material as a function of the measured speed of the delivery piston.
  • the control unit evaluates the measured values of the measuring device and automatically takes measures if the measured speed deviates from a specified target speed.
  • a waste line branches off from a feed line connected to the feed pump for the viscous material, through which the material is fed to the processing station, and that the feed line can be blocked and the waste line released by means of the control unit.
  • the waste line expediently leads to a waste container into which the material recognized as not processable can be diverted.
  • the measuring device expediently has a distance measuring unit for time-dependent measurement of the distance covered by the delivery piston.
  • the distance measuring unit is preferably an absolute encoder.
  • the delivery piston is mechanically connected to the displacement measuring unit. This can be done in that the feed pump has a piston rod which protrudes from the feed cylinder and is firmly connected to the feed piston, which is rigidly connected to a movable element of the displacement measuring unit by means of connecting means, and which is expediently also engaged by a drive unit. The movement of the delivery piston is then transmitted directly to the movable element of the displacement measuring unit.
  • the control unit automatically switches over and locks the waste line with simultaneous release of the delivery line.
  • a valve for example a 2/2-way valve, can be provided at the point at which the waste line branches off from the delivery line.
  • the waste container when it is filled with material, can either be emptied and reused, or it is disposed of and replaced by a new, empty waste container.
  • the device 10 shown schematically in the drawing is used to convey viscous material such as adhesive, sealant or insulating material from a barrel-like container not shown in detail.
  • the conveying device 10 has a follower plate 12, which is intended to close the container that is open to a container top.
  • the follower plate 12 also lies sealingly all around against the inner surface of a circumferential container wall extending to the top of the container.
  • the follower plate 12 also rests on the material surface in the container. It is mounted on a lifting device 14 with which it can be lowered following the decreasing material level in the container and, after the container has been emptied, raised and removed from it.
  • a material outlet (not shown in detail in the drawing) is arranged in the follower plate 12, to which a feed pump 16, which is firmly connected to the follower plate 12 and which is used to convey material from the container via the material outlet into a feed line 18 leading to a processing station, is arranged .
  • the feed pump 16 has a delivery cylinder 20 fixedly mounted on the follower plate 12 and a delivery piston, not shown in the drawing, which can move back and forth in the delivery cylinder 20 and whose linear movement in the delivery cylinder 20 sucks material through the material outlet into the delivery cylinder 20 and the material out of the delivery cylinder 20 pushes into the delivery line 18.
  • the delivery device 10 also has a measuring device 24 with which the speed of the delivery piston can be measured during the delivery stroke.
  • the measuring device 24 has a displacement measuring unit in the form of an absolute value encoder 26, the housing of which is mounted on the lifting device 14.
  • a piston rod 28 fixedly connected to the delivery piston is led upward out of the delivery cylinder 20 and is rigidly connected to a movable element of the absolute encoder 26 by means of connecting rods 30.
  • the displacement measuring device 24 also has a control unit 32 which controls the delivery of the viscous material as a function of the measured speed of the delivery piston.
  • the control unit 32 detects when the measured speed of the delivery piston is outside a tolerance range around a predetermined target speed, which indicates that the consistency of the material being conveyed has changed to such an extent that its suitability is in question. In this case, the control unit 32 switches a valve 34 so that the conveyed material is not conveyed to the processing station, but into a waste line 36 branching off from the conveying line 18 and leading to a waste container 38. If the control unit 32 detects that the speed of the delivery piston is again within the tolerance range, it switches the valve 34 again and the viscous material is again delivered to the processing station via the delivery line 18.
  • the invention relates to a device 10 for conveying viscous material from a container, with a conveying pump 16 which has a conveying cylinder 20 and a conveying piston that can move back and forth in the conveying cylinder 20.
  • a measuring device 24 is provided for measuring the speed of the delivery piston.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Reciprocating Pumps (AREA)
  • Coating Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Claims (8)

  1. Dispositif dévolu au refoulement d'un matériau visqueux à partir d'un récipient, comprenant une pompe de refoulement (16) munie d'un cylindre de refoulement (20) et d'un piston refouleur mobile à va-et-vient dans ledit cylindre de refoulement (20), et un système mesureur (24) conçu pour mesurer la vitesse du piston refouleur, lequel système mesureur (24) comporte une unité de commande (32) destinée à commander le refoulement du matériau visqueux en fonction de la vitesse mesurée dudit piston refouleur, caractérisé par le fait qu'un conduit d'élimination (36) bifurque d'un conduit (18) de refoulement du matériau visqueux, raccordé à la pompe de refoulement (16), ledit conduit de refoulement (18) et ledit conduit d'élimination (36) pouvant être, respectivement, bloqué et libéré au moyen de l'unité de commande (32).
  2. Dispositif selon la revendication 1, caractérisé par le fait que le système mesureur (24) est doté d'une unité (26) de mesure de courses conçue pour mesurer, en fonction du temps, la course parcourue par le piston refouleur.
  3. Dispositif selon la revendication 2, caractérisé par le fait que le piston refouleur est relié mécaniquement à l'unité (26) de mesure de courses.
  4. Dispositif selon la revendication 3, caractérisé par le fait que la pompe de refoulement (16) est munie d'une tige (28) qui dépasse au-delà du cylindre de refoulement (20), est reliée au piston refouleur et est reliée rigidement, à l'aide de moyens de liaison (30), à un élément mobile de l'unité (26) de mesure de courses.
  5. Dispositif selon l'une des revendications 2 à 4, caractérisé par le fait que l'unité (26) de mesure de courses est un codeur absolu.
  6. Dispositif selon l'une des revendications précédentes, caractérisé par le fait que le conduit d'élimination (36) mène à un réceptacle de déchets (38).
  7. Dispositif selon l'une des revendications précédentes, caractérisé par une plaque suiveuse (12) dédiée à l'obturation du récipient au niveau d'une face supérieure ouverte dudit récipient, et pourvue d'une sortie de matériau à laquelle la pompe de refoulement (16) est raccordée.
  8. Procédé de refoulement d'un matériau visqueux à partir d'un récipient, avec utilisation d'un dispositif (10) conforme à l'une des revendications précédentes, sachant que le matériau visqueux est admis dans le conduit de refoulement (18) lorsque la vitesse mesurée du piston refouleur avoisine une vitesse de consigne préétablie, dans une plage de tolérances préétablie, et sachant que ledit matériau visqueux est admis dans le conduit d'élimination (36) lorsque ladite vitesse mesurée du piston refouleur se situe en dehors de ladite plage de tolérances.
EP17817740.8A 2017-01-05 2017-12-15 Dispositif pour le refoulement de matériau visqueux Active EP3565972B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017000047.6A DE102017000047A1 (de) 2017-01-05 2017-01-05 Vorrichtung zum Fördern von viskosem Material
PCT/EP2017/083034 WO2018127383A1 (fr) 2017-01-05 2017-12-15 Dispositif pour le refoulement de matériau visqueux

Publications (2)

Publication Number Publication Date
EP3565972A1 EP3565972A1 (fr) 2019-11-13
EP3565972B1 true EP3565972B1 (fr) 2020-10-14

Family

ID=60765629

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17817740.8A Active EP3565972B1 (fr) 2017-01-05 2017-12-15 Dispositif pour le refoulement de matériau visqueux

Country Status (6)

Country Link
US (1) US20200063726A1 (fr)
EP (1) EP3565972B1 (fr)
KR (1) KR20190101984A (fr)
CN (1) CN110121594B (fr)
DE (1) DE102017000047A1 (fr)
WO (1) WO2018127383A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017100712A1 (de) * 2017-01-16 2018-07-19 Atlas Copco Ias Gmbh Vorrichtung und Verfahren zum Fördern von viskosem Material
US11034575B2 (en) 2016-09-05 2021-06-15 Atlas Copco Ias Gmbh Barrel pump having a follower plate with an adjustable sealing ring
DE102020127440A1 (de) 2020-08-06 2022-02-10 Atlas Copco Ias Gmbh Vorrichtung zum Fördern von viskosem Material

Family Cites Families (12)

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Publication number Priority date Publication date Assignee Title
US4255088A (en) * 1979-06-14 1981-03-10 Valleylab, Inc. Liquid pumping system having means for detecting gas in the pump
US4679989A (en) * 1986-07-16 1987-07-14 Graco Inc. Pump shovel bulk unloader
DE9014625U1 (de) * 1990-10-22 1991-03-28 Reinhardt-Technik Gmbh & Co, 5883 Kierspe Vorrichtung zum Dosieren eines insbesondere hochviskosen Ein- und Mehrkomponentengemisches
US5252037A (en) * 1992-07-30 1993-10-12 Aseptic Technology Engineering Co. Piston valved vertical pump for particulate materials
DE4332125A1 (de) * 1993-09-22 1995-03-23 Wagner Wilhelm Wiwa Verfahren zum Mischen von Werkstoffkomponenten und Vorrichtung zur Durchführung des Verfahrens
JP3371687B2 (ja) * 1996-06-11 2003-01-27 株式会社スリーボンド 定量吐出方法
DE29902514U1 (de) * 1999-02-15 1999-09-30 Nordson Corporation, Westlake, Ohio Vorrichtung zum Fördern von Fluiden, insbesondere viskosen Kleb- oder Dichtstoffen
JP4322282B2 (ja) * 2007-01-25 2009-08-26 中外炉工業株式会社 液体供給装置
CN103423139B (zh) * 2012-05-23 2016-04-27 中联重科股份有限公司 泵送机构及其控制方法以及混凝土泵送设备
DE202013009164U1 (de) * 2013-10-17 2013-11-15 Martin Wagner Fördereinrichtung mit Wegsensor sowie Mischeinrichtung umfassend eine Fördereinrichtung mit einem Wegsensor
US20160215927A1 (en) * 2013-11-18 2016-07-28 Richard Nelson Dual pump oil level system and method
US20160038957A1 (en) * 2014-08-06 2016-02-11 Illinois Tool Works Inc. Remote bulk feed system for a dispensing system and method of supplying viscous material to a dispensing system

Non-Patent Citations (1)

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Title
None *

Also Published As

Publication number Publication date
CN110121594B (zh) 2021-07-02
EP3565972A1 (fr) 2019-11-13
DE102017000047A1 (de) 2018-07-05
KR20190101984A (ko) 2019-09-02
CN110121594A (zh) 2019-08-13
WO2018127383A1 (fr) 2018-07-12
US20200063726A1 (en) 2020-02-27

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