CN110121594B - Apparatus for delivering viscous material - Google Patents

Apparatus for delivering viscous material Download PDF

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Publication number
CN110121594B
CN110121594B CN201780080602.4A CN201780080602A CN110121594B CN 110121594 B CN110121594 B CN 110121594B CN 201780080602 A CN201780080602 A CN 201780080602A CN 110121594 B CN110121594 B CN 110121594B
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China
Prior art keywords
delivery
piston
viscous material
line
speed
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CN201780080602.4A
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Chinese (zh)
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CN110121594A (en
Inventor
G·恩德勒
T·豪斯纳
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Atlas Copco IAS GmbH
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Atlas Copco IAS GmbH
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Publication of CN110121594A publication Critical patent/CN110121594A/en
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    • 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
    • F04B49/10—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
    • 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
    • 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

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  • 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)

Abstract

The invention relates to a device for delivering viscous material from a container, comprising a delivery pump (16) having a delivery cylinder (20) and a delivery piston which is movable back and forth in the delivery cylinder (20), and a measuring device (24) for measuring the speed of the delivery piston. According to the invention, the measuring device (24) has a control unit (32) for controlling the delivery of the viscous material as a function of the measured speed of the delivery piston, and a waste line (36) branches off from a delivery line (18) for the viscous material, which is connected to the delivery pump (16), and the delivery line (18) can be blocked and the waste line (36) can be released by means of the control unit (32).

Description

Apparatus for delivering viscous material
Technical Field
The present invention relates to an apparatus for conveying viscous material and a method for conveying viscous material using such an apparatus.
Background
An apparatus for conveying, for example, adhesive, sealant or insulating material from containers to a processing station is known. Such a device is particularly applicable in the automotive industry for applying viscous materials to body parts. Typically such devices have a follower plate which rests on the surface of the material in the vessel and follows the surface as the level of the material falls. For this purpose, a lifting device for lowering and raising the follower plate is provided. The material is extracted from the vessel by means of a delivery pump connected to a material outlet in a follower plate which follows the material surface down. The follower plate can also be additionally pressed against the material surface, so that the material is pressed into the material outlet on the basis of the pressure, during which the follower plate bears sealingly against the surrounding container wall. But if the container contains air bubbles, this cannot be detected before the material is applied. However, if a material containing bubbles is transported and applied to a workpiece, this often results in the applied material not being able to fully exert its adhesive, sealing or insulating effect. The components thus coated are generally unsuitable for further processing and must be discarded as waste.
DE 19713938 a1 discloses a device of the type mentioned at the outset. The delivery apparatus for viscous material has a sensor that determines the speed of a piston rod of a pump that delivers viscous material. The sensor serves to keep the speed of the delivery piston connected to the piston rod constant by means of the control device. A similar device is known from DE 202013009164U 1. The device has a measured value sensor for controlling the delivery volume flow. Both devices are not suitable for identifying air bubbles in the conveyed material.
Disclosure of Invention
The object of the invention is therefore to further develop a device of the type mentioned at the outset in such a way that rejects can be better avoided.
The object is achieved according to the invention by a device for delivering viscous material from a container and a method for delivering viscous material from a container using the device.
The invention relates to a device for conveying viscous material from a container, comprising a conveying pump having a conveying cylinder and a conveying piston which is movable to and fro in the conveying cylinder, and a measuring apparatus for measuring the speed of the conveying piston, wherein the measuring apparatus has a control unit for controlling the conveying of the viscous material as a function of the measured speed of the conveying piston, and a waste line branches off from the conveying line for the viscous material, which is connected to the conveying pump, and the conveying line can be blocked and the waste line can be released by means of the control unit.
The invention relates to a method for delivering viscous material from a container using the above-mentioned device, wherein the viscous material is delivered into a delivery line when the measured speed of the delivery piston lies within a predetermined tolerance range around a predetermined nominal speed, and the viscous material is delivered into a waste line when the measured speed of the delivery piston lies outside the tolerance range around the predetermined nominal speed.
The present invention is based on the following recognition discovered by the applicant: the speed of the delivery piston may vary during the delivery process depending on the viscosity of the material. The applicant has found through experimentation that the speed of the delivery piston during the delivery stroke is constant at least within a tolerance range while the viscosity of the material remains constant. If the material to be delivered contains material bubbles, this results in a significant change in the speed of the delivery piston during the delivery stroke. Based on this knowledge, it is therefore proposed that the speed of the delivery piston is measured by means of a measuring device during the delivery stroke, so that a change in the viscosity of the material, in particular the presence of air bubbles, can be inferred when the measured speed changes, in order to take corresponding measures. For this purpose, the measuring device has a control unit for controlling the delivery of the viscous material in dependence on the measured speed of the delivery piston. The control unit evaluates the measured values of the measuring device and automatically takes action when the measured speed deviates from a predetermined nominal speed. Furthermore, it is provided that a waste line branches off from a supply line for the viscous material (via which the material is supplied to the processing station) which is connected to the supply pump, and that the supply line can be blocked and the waste line can be released by means of the control unit. Suitably, the waste line leads to a waste container into which material identified as non-processable can be discharged.
The measuring device expediently has a stroke measuring unit for measuring the stroke traveled by the delivery piston as a function of time. The travel measuring unit is preferably an absolute value sensor. The delivery piston is preferably also mechanically connected to the stroke measuring unit. This can be achieved by: the delivery pump has a piston rod which projects from the delivery cylinder and is fixedly connected to the delivery piston, which piston rod is rigidly connected to the movable element of the stroke measuring unit by means of a connecting means and on which the drive unit also acts, as appropriate. The movement of the delivery piston is thus transmitted directly to the movable element of the stroke measuring unit.
Provision can be made for the operator to intervene in the delivery process when there is a significant deviation of the speed of the delivery piston from a predetermined nominal speed. But preferably measures are taken automatically in this case to prevent the production of waste products.
If, in the further course of the conveying process, the speed of the conveying piston is subsequently measured again by the measuring device within the predetermined tolerance range of the predetermined setpoint speed, it can be assumed that the conveyed material no longer contains air bubbles, so that the control unit switches automatically, blocks the waste line and at the same time releases the conveying line. For this purpose, a valve, for example a 2-position 2-way valve, can be provided at the point where the waste line branches off from the delivery line. When the waste container is filled with material, the waste container can be emptied and reused or it can be transported away and replaced with a new empty waste container.
Drawings
The invention will be explained in more detail below with reference to an embodiment schematically shown in the drawings. Here:
fig. 1 shows a conveying apparatus in a perspective view;
fig. 2 shows the transport device according to fig. 1 in a front view.
Detailed Description
The apparatus 10 shown schematically in the drawings is used for delivering viscous materials, such as adhesives, sealants or insulating materials, from a barrel-shaped container, not shown in more detail. In the exemplary embodiment shown here, the conveying device 10 has a follower plate 12 for closing the containers open on the upper side thereof. Furthermore, the follower plate 12 bears circumferentially sealingly against the inner surface of the surrounding vessel wall extending to the upper side of the vessel during transport. The follower plate 12 also rests on the surface of the material in the container. The follower plate is fitted on a lifting device 14 by means of which it can be lowered following the falling material level in the vessel and raised and removed from the vessel after it has been emptied. A material outlet, not shown in greater detail in the drawing, is provided in the follower plate 12, to which a delivery pump 16, which is fixedly connected to the follower plate 12, is connected for delivering material from the container via the material outlet into a delivery line 18 leading to the processing station. The delivery pump 16 has a delivery cylinder 20, which is fixedly mounted on the follower plate 12, and a delivery piston, not shown in the figures, which is movable to and fro in the delivery cylinder 20, the linear movement of which in the delivery cylinder 20 draws material into the delivery cylinder 20 through a material outlet and presses the material out of the delivery cylinder 20 into the delivery line 18.
The conveying device 10 also has a measuring device 24, by means of which the speed of the conveying piston can be measured during the conveying stroke. The measuring device 24 has a travel measuring unit in the form of an absolute value sensor 26, the housing of which is fitted on the lifting device 14. A piston rod 28, which is fixedly connected to the delivery piston, projects upward from the delivery cylinder 20 and is rigidly connected to the movable element of the absolute value sensor 26 by means of a connecting rod 30. The stroke measuring device 24 also has a control unit 32 which controls the delivery of the viscous material in dependence on the measured speed of the delivery piston. The control unit 32 identifies when the measured speed of the delivery piston lies outside the tolerance range of the predetermined nominal speed, which indicates that the viscosity of the delivered material has changed such that the suitability of the delivered material is questioned. In this case, the control unit 32 switches the valves 34 such that the conveying material is not conveyed to the processing station, but rather into a waste line 36 branching off from the conveying line 18, which leads to a waste container 38. If the control unit 32 recognizes that the speed of the delivery piston is again within the tolerance range, the control unit switches the valve 34 again and the viscous material is delivered again to the processing station via the delivery line 18.
In summary, it should be noted that: the present invention relates to an apparatus 10 for delivering viscous material from a container, comprising a delivery pump 16 having a delivery cylinder 20 and a delivery piston reciprocable in the delivery cylinder 20. According to the invention, a measuring device 24 is provided for measuring the speed of the delivery piston.

Claims (8)

1. Apparatus for delivering viscous material from a container, comprising a delivery pump (16) having a delivery cylinder (20) and a delivery piston which is movable to and fro in the delivery cylinder (20), and a measuring device (24) for measuring the speed of the delivery piston, characterized in that the measuring device (24) has a control unit (32) for controlling the delivery of the viscous material as a function of the measured speed of the delivery piston, and in that a waste line (36) branches off from a delivery line (18) for the viscous material, which is connected to the delivery pump (16), and in that the delivery line (18) can be blocked and the waste line (36) can be released by means of the control unit (32).
2. The device according to claim 1, characterized in that the measuring device (24) has a stroke measuring unit (26) for measuring the stroke traveled by the delivery piston in relation to time.
3. Device according to claim 2, characterized in that the delivery piston is mechanically connected with a stroke measuring unit (26).
4. Device according to claim 3, characterized in that the delivery pump (16) has a piston rod (28) which projects from the delivery cylinder (20) and is connected to the delivery piston, which piston rod is rigidly connected to the movable element of the stroke measuring unit (26) by means of a connecting means (30).
5. The device according to any one of claims 2 to 4, characterized in that the travel measuring unit (26) is an absolute value sensor.
6. The apparatus according to any of claims 1 to 4, characterized in that the waste line (36) leads to a waste container (38).
7. An apparatus according to any one of claims 1-4, characterized by a follower plate (12) for closing the vessel at the open vessel upper side, which follower plate has a material outlet to which the feed pump (16) is connected.
8. Method for delivering viscous material from a container using a device (10) according to one of claims 1 to 7, wherein the viscous material is delivered into a delivery line (18) when the measured speed of the delivery piston is within a predetermined tolerance range around a predetermined nominal speed, and the viscous material is delivered into a waste line (36) when the measured speed of the delivery piston is outside the tolerance range around the predetermined nominal speed.
CN201780080602.4A 2017-01-05 2017-12-15 Apparatus for delivering viscous material Active CN110121594B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102017000047.6 2017-01-05
DE102017000047.6A DE102017000047A1 (en) 2017-01-05 2017-01-05 Device for conveying viscous material
PCT/EP2017/083034 WO2018127383A1 (en) 2017-01-05 2017-12-15 Device for pumping viscous material

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CN110121594A CN110121594A (en) 2019-08-13
CN110121594B true CN110121594B (en) 2021-07-02

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US (1) US20200063726A1 (en)
EP (1) EP3565972B1 (en)
KR (1) KR20190101984A (en)
CN (1) CN110121594B (en)
DE (1) DE102017000047A1 (en)
WO (1) WO2018127383A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017100712A1 (en) * 2017-01-16 2018-07-19 Atlas Copco Ias Gmbh Apparatus and method for conveying viscous material
CN109641735B (en) 2016-09-05 2021-04-30 阿特拉斯柯普科工业技术(德国)有限公司 Barrel pump with adjustable seal ring following plate
DE102020127440A1 (en) 2020-08-06 2022-02-10 Atlas Copco Ias Gmbh Device for conveying viscous material

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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
US6082888A (en) * 1996-06-11 2000-07-04 Three Bond Co., Ltd. Constant rate discharge apparatus and constant rate discharge method

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DE29902514U1 (en) * 1999-02-15 1999-09-30 Nordson Corp Westlake Device for conveying fluids, in particular viscous adhesives or sealants
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DE202013009164U1 (en) * 2013-10-17 2013-11-15 Martin Wagner Conveying device with displacement sensor and mixing device comprising a conveyor with a displacement sensor
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Patent Citations (3)

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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
US6082888A (en) * 1996-06-11 2000-07-04 Three Bond Co., Ltd. Constant rate discharge apparatus and constant rate discharge method

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Publication number Publication date
EP3565972B1 (en) 2020-10-14
EP3565972A1 (en) 2019-11-13
US20200063726A1 (en) 2020-02-27
KR20190101984A (en) 2019-09-02
WO2018127383A1 (en) 2018-07-12
DE102017000047A1 (en) 2018-07-05
CN110121594A (en) 2019-08-13

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