EP0203980B1 - Dispositif pour transmettre aux systemes individuels d'arrosage des machines de coulee sous pression un liquide compose d'eau et d'additifs - Google Patents

Dispositif pour transmettre aux systemes individuels d'arrosage des machines de coulee sous pression un liquide compose d'eau et d'additifs Download PDF

Info

Publication number
EP0203980B1
EP0203980B1 EP86900103A EP86900103A EP0203980B1 EP 0203980 B1 EP0203980 B1 EP 0203980B1 EP 86900103 A EP86900103 A EP 86900103A EP 86900103 A EP86900103 A EP 86900103A EP 0203980 B1 EP0203980 B1 EP 0203980B1
Authority
EP
European Patent Office
Prior art keywords
die casting
additives
water
valve
liquid
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.)
Expired
Application number
EP86900103A
Other languages
German (de)
English (en)
Other versions
EP0203980A1 (fr
Inventor
Helmut Thurner
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.)
Bayrisches Druckguss-Werk Thurner & Co KG GmbH
Bayerisches Druckgusswerk Thurner KG
Original Assignee
Bayrisches Druckguss-Werk Thurner & Co KG GmbH
Bayerisches Druckgusswerk Thurner KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bayrisches Druckguss-Werk Thurner & Co KG GmbH, Bayerisches Druckgusswerk Thurner KG filed Critical Bayrisches Druckguss-Werk Thurner & Co KG GmbH
Priority to AT86900103T priority Critical patent/ATE43267T1/de
Publication of EP0203980A1 publication Critical patent/EP0203980A1/fr
Application granted granted Critical
Publication of EP0203980B1 publication Critical patent/EP0203980B1/fr
Expired legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/2007—Methods or apparatus for cleaning or lubricating moulds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/85978—With pump
    • Y10T137/86131—Plural

Definitions

  • the invention relates to a device for supplying sprayers for die casting machines, each with a liquid containing water and additives for cooling, cleaning and / or lubricating purposes, for application to the inner wall of open molds, according to the preamble of claim 1.
  • the opened mold is wetted on the inside with a liquid containing water and additives, dissolved, suspended or emulsified therein.
  • the liquid is used for separation, cooling and / or lubrication.
  • the composition of the liquid depends on the material and shape of the castings, in particular on their wall thickness, and on the conditions for quick and easy demolding.
  • the liquid is sprayed onto the walls of the mold. It is known to connect a spray device arranged on a die casting machine to a container from which the liquid is conveyed by means of compressed air to the nozzles of the spray device (practice of die casting production by E. Brunhuber, 1980, ausverlag Schiele and Schön GmbH, page 128).
  • Liquids with different compositions and different spraying devices adapted to the respective casting mold are often required for different casting molds. If the liquid supply in the container is not exhausted when the mold is changed, the container must be emptied and filled with a mixture which is matched to the other mold. In addition, the capacity of the container may not be sufficient for a larger series of the same mold. The die casting process must then be stopped in automatic mode when the liquid supply in the container is exhausted.
  • US-A-4,186,769 describes a process in which a concentrate is added to a dilute liquid as it is being pumped from a first container to a casting machine or into a second container in such a way that a liquid of the desired concentration is present which is fed to the casting machines in order to be conducted there in a closed circuit.
  • the invention has for its object to develop a suitable for automatic operation device for supplying one or more sprayers for die casting machines, each with a liquid containing water and additives for cooling, cleaning and / or lubricating purposes.
  • the object is achieved by the measures described in claim 1.
  • the device specified in claim 1 it is possible to set the desired mixing ratio with the mixing valve on the respective die casting machine. In this case, only the amount of liquid specially tailored to the respective casting mold is required for the individual spraying operation.
  • the setting can be made in a short time. The production process is therefore no longer affected by time-consuming refilling or decanting of the liquid for the spraying operation.
  • the die casting machines can be better exploited with the device described in claim 1, since there are fewer set-up times.
  • the principle of the invention is to store liquids with the highest necessary concentration and to carry out the required dilution with water for each casting process before spraying.
  • a number of central containers is provided corresponding to the type of casting materials to be processed in the die casting machines, in which in each case liquids from water and additives are stored in the highest concentration required for the respective casting material in a corresponding shape, the central containers are connected via switching valves to a pipeline system to which the mixing valves are closed.
  • the type of die casting material to be processed e.g.
  • the changeover to the suitable spray liquid takes place by opening the valve between the manifold and the central container provided for the respective material and by adapting the mixing valve setting to the material and the mold used.
  • the spray liquid a change can be carried out quickly and easily.
  • the central containers are preferably arranged higher than the die casting machines.
  • the liquids thus get from the containers to the mixing valves under the influence of gravity. This eliminates the need for complex and energy-consuming subsidies.
  • the delivery device is designed as a piston pump, the cylinder of which is either vertical or can assume any other position if it is ensured that gravity does the necessary work via the media.
  • no pump is required for the conveyance and mixing of the respective liquids until the interior of the cylinder is filled with the mixture. These processes take place under the influence of gravity. The device therefore works particularly economically.
  • the piston of the respective piston pump preferably has two disks which are arranged at a distance from one another, one of which faces the cylinder space intended for holding the liquid and the other faces the cylinder space which can be acted upon by a compressed gas and with which the space delimited by the two disks over a check valve can be connected when the excess pressure is removed.
  • liquid which penetrates into the intermediate space during the pumping out of the cylinder chamber filled with liquid can get into the cylinder chamber which is no longer under gas pressure and can escape therefrom after the pumping process.
  • the piston consisting of two disks, the problem of sealing against the liquid and against the compressed gas can be easily solved.
  • the cylinder space to which pressurized gas can be applied can expediently be connected to the compressed air source provided for the sprayer via a changeover valve.
  • the same source of compressed air can therefore be used to actuate the pump and the sprayer.
  • a check valve is arranged at the outlet of the cylinder chamber to which liquid can be applied.
  • the pump can be installed at a suitable location below the sprayer.
  • the check valve prevents liquid from flowing back from the sprayer to the pump or that the sprayer releases drops.
  • a preferred embodiment of a mixing valve consists in that a cylindrical body rotatably arranged in a housing has a central cavity which is open on one side and a radial slot which can be rotated in relation to two inlet openings in a housing wall for the liquid and for water, with the inlet cross-sections changing in opposite directions is, with check valves upstream of the inlet openings.
  • the check valves prevent the liquid in the cylinder from flowing back when the cylinder is pumped out into the central container.
  • the cylindrical body can be provided with a lever, one end of which is designed as a display tip for a scale. This embodiment enables the mixing ratio to be set by hand.
  • the cylindrical body with a motor drive and to detect the angular position of the cylindrical body via a position indicator.
  • a potentiometer which gives an analog display, or a coding disk, with which the position can be recorded digitally, is suitable as the position reporting device.
  • a geared motor can be used as the motor drive.
  • the cylinder of the pumps is preferably composed of two disks and a cylindrical jacket arranged between the disks. This embodiment can be produced economically. It is sufficient if the cylindrical jacket is relatively thin-walled. Stops can be provided in the cylinder to limit the stroke of the piston. The suction volume of the cylinder and thus the amount of liquid to be sprayed can be specified by adjusting the stops.
  • the two halves of the molds 18, 20 are not identified in more detail.
  • the two die casting machines 10, 12 each have a machine bed and stands arranged thereon.
  • the fixed mold halves and hydraulic elements are attached to the stands.
  • a slide and the movable mold half attached to it are moved with the hydraulic elements during the production of the die castings.
  • the machine bed, the stand and the hydraulic elements are designated in more detail in FIG. 1.
  • the spray devices 14, 16 With the spray devices 14, 16, a liquid is sprayed onto the mold surfaces for cooling, cleaning and / or lubricating purposes.
  • the spray devices 14, 16, which are provided with directionally adjustable spray nozzles, are each fastened to supports 22, 24 so as to be horizontally and vertically displaceable and pivotable.
  • the carriers 22, 24 are each arranged on one of the machine stands.
  • the liquids to be sprayed consist of water with additives, which can be graphite, pigments or the like in connection with special active substances and carriers. In many cases, emulsifiable, pigment-free additives are also used.
  • Liquids with different compositions are often required for different forms 18, 20 and different casting materials.
  • the sprayers 14, 16 also often have to be replaced or readjusted to adapt to a different mold.
  • a device which has at least one central container 26 for the spray devices 14, 16.
  • the container 26 contains water with the additives in the highest required concentration. The concentration is set to the mold and the casting material that require the highest proportion of additives for the production of perfect castings.
  • the additives can e.g. B. be diluted 1:50 or 1:80 with water. If different additives are required for different casting materials, eg aluminum or zinc die casting, further central containers with liquids are to be provided in which the corresponding additives are dissolved in the highest necessary concentration. In Fig. 1 only a further central container 28 is shown. If necessary, several central containers can be provided.
  • the central containers 26, 28 are connected on the output side via pipes 30, 32 to a changeover valve 34, the outlet of which is connected to a central pipe system 36 which contains branches, not specified, which run to the die casting machines 10, 12 and further die casting machines, not shown .
  • Mixing valves 38, 40 are located on the die casting machines 10, 12 and the other die casting machines, each of which is connected to the pipeline system 36 with an inlet.
  • the mixing valves 38, 40 are each connected to a pipe system 42, which is fed by a central container 44, in which water is located, with a second input.
  • the central containers 26, 28, 44 are located at the same height above the die casting machines 10, 12.
  • the water from the container 44 and the liquid selected in each case via the changeover valve 34 come in under the influence of gravity and with the essentially the same pressure the mixing valves 38, 40 on the die casting machines 10, 12.
  • the concentration of the additives in the water required for the respective manufacturing process is generated by admixing water from the container 44.
  • the mixing valves 38, 40 are each followed by pumps 46, 48, which are arranged, for example, at the level of the machine bed of the respective die casting machine 10, 12. On the output side, pumps 46, 48 are each connected to sprayers 14, 16 via pipes 50, 52.
  • the pipes 30, 32, the changeover valve 34, the pipe system 36, the mixing valves 38, 40, the pipe system 42, the container 44 and the pumps 46, 48, as well as the containers 26, 28, belong to the device with which the die casting machines 10 , 12 are supplied centrally and automatically each with water and additives in a liquid containing a concentration that can be set on the mixing valves 38, 40.
  • the container 44 is provided with a device 54 for regulating the water level in the container 44. If the water level drops below a certain level, this is determined by a fill level sensor which belongs to the device 54.
  • the fill level sensor opens a tap in a feed line for the container 44 fed by the water supply system until the desired fill level is reached.
  • Fill level sensors 56 which control dosing devices 58, are also arranged in the containers 26 and 28.
  • the dosing devices 58 generate the liquids intended for the containers 26, 28 from the additives and the water fed in.
  • the pumps 46, 48 each have a cylindrical jacket 60, which is clamped between an upper disk 62 and a lower disk 64 using seals, not specified.
  • the disks 62, 64 are rectangular. At the four corners, the letters 62, 64 are connected to one another via stud bolts 66.
  • the pumps 46, 48 stand with their cylinders on the die casting machines 12, 10.
  • the mixing valve 38 or 40 is fastened to the upper disk 62.
  • the mixing valves 38, 40 are each provided with a connecting piece 68 for the liquid supplied by the containers 26 or 28 and with a connecting piece 70 for the water supplied by the container 44.
  • a bearing 74 is fixed in a cylindrical housing 72 of the mixing valves 38, 40, in which a cylindrical body 76 is rotatably arranged.
  • the cylindrical body 76 consists of two sections 78, 80 with different diameters.
  • the section 78 with the larger diameter has a cylindrical recess 82 which is open on the side of the mixing valve 38 or 40 facing the pump 46, 48.
  • In section 78 there is a slot 84 running over the entire half of the circular ring of the wall surrounding the recess 82.
  • the slot 84 there are cylindrical recesses 86, 88 for the liquid at diametrically opposite locations of the housing 72 and the bearing 74 - and water inlet.
  • the recesses 86, 88 are each connected to the cavities of the connecting pieces 68, 70, which are unspecified, and which are screwed into the housing 72.
  • the mixing ratio between the liquid arriving via the connecting piece 68 and the water arriving via the connecting piece 70 can be changed.
  • the end faces of the connecting pieces 68, 70 which are located in the interior of the housing 72 and are not designated in any more detail, are each designed as valve seats for valve plates 90, 92, which are pressed against the valve seats under spring preload.
  • the valve plates 90, 92, the valve seats and the unspecified springs, the ends of which are located on the valve plates 90, 92 and on the spring washers 94 in the Support recesses 86, 88 represent check valves.
  • the housing 72 is closed on its side facing away from the pump 46 or 48 with a plate-shaped cover 96 which has an opening (not specified in more detail) through which the section 80 of the body 76 projects outwards.
  • a lever 98 is inserted into an approximately radial bore in section 80 and then screwed on. The lever 98 protrudes from the section 80 on both sides.
  • the angular position of the slot 84 can be brought into accordance with a desired mixing ratio by means of the lever 98.
  • a motor 106 e.g. a geared motor to which section 80 is connected.
  • the motor 106 is shown in dash-dotted lines in FIG. 2 above the end face of the section 80.
  • the slot 84 can be remotely adjusted to the desired angular position.
  • a rotary position transmitter e.g. a potentiometer, not shown, can be used, which outputs an angle-dependent voltage at the tap, which voltage is detected at a central control point.
  • the mixing ratio can be automatically set to, for example, a value specified by a programmable control unit.
  • the housing 72 of the mixing valve 38 or 40 is fastened on the disk 62 of the pump 46 or 48 in such a way that the cutout 82 is aligned with an inlet 108 in the disk 62.
  • the inlet 108 opens into a cylinder space 110 within the cylinder 112 formed by the disks 62, 64 and the casing 60, in which a piston 114 is slidably arranged.
  • the piston 114 contains two piston disks 116, 118 which are arranged at a distance from one another and are connected to one another via a central pin 120. Below the disc 118 there is a cylinder space 122 which can be connected via a bore 124 to a compressed air source 126 which also feeds the sprayers 14, 16.
  • a check valve 128 is located in the piston disc 118, via which the intermediate space 130 delimited by the piston discs 116, 118 can be connected to the cylinder space 122 if there is no overpressure in the cylinder space 122.
  • the cylinder space has an outlet opening 132 which is arranged in the disk 62 and into which a connecting piece 134 is screwed.
  • the outlet opening 132 has at its end facing the cylinder space 110 an annular projection 136 against which a cover 138 is pressed in a spring-loaded manner.
  • a spring 140 is supported on a shoulder in the connecting piece 134 and on the cover 138.
  • the lid 138 forms a check valve with a projection 136 and the spring 140.
  • the liquid provided with the additives in the highest required concentration passes from the containers 26 and 28 via the lines 30, 32 to the changeover valve 34, through which the container 26 or 28 is selected.
  • the setting of the changeover valve 34 defines the connection of the container 26 or 28 to the pipeline system 36, which is expediently provided with an outlet tap with which the liquid still present in the line system can be removed before switching to another container.
  • the liquid reaches the connecting pieces 68 of the mixing valves 38, 40 via the piping system 36.
  • Water enters from the container 44 via the piping system 42 into the connecting pieces 70 of the mixing valves 38, 40.
  • the valve plates 90, 92 are opened under the force of gravity of the liquid or water, so that the liquid and the water each reach the body 76 via the recesses 86 and 88.
  • the liquid and the water mix in the slot 84 and in the recess 82.
  • the mixture passes through the inlet 108 into the cylinder space 110, which fills with the liquid mixture, the mixing ratio of which depends on the angular position of the slot 84.
  • the angular positions of the slots 84 in the mixing valves 38, 40 differ.
  • Switching valves 142, 144 are located between the compressed air source 126 and the bores 124, which can be operated by hand or by a control.
  • the cylinder space 122 In the rest position of the piston 114, the cylinder space 122 is placed at atmospheric pressure via the changeover valves 142, 144.
  • the piston 114 bears against stops 146 designed as screws, which are screwed into the disk 64 and limit the stroke of the piston 114.
  • the maximum available volume of the cylinder space 110 for the liquid mixture and thus the amount of liquid intended for spraying are determined via the stroke path with the stops 146.
  • liquid which has entered the intermediate space 130 between the piston disk 116 and the jacket 60 can enter the cylinder space 122 via the check valve 128 and escape from there into the atmosphere.
  • the cylinder spaces 122 are each connected to the compressed air source 126 via the changeover valves 142, 144.
  • the piston 114 is moved upward when pressurized with compressed air. B. a working pressure of 0.7 MPa (7 bar) is generated.
  • the check valves in the mixing valves 38, 40 close under the pressure prevailing in the working space, so that no liquid is pumped back out of the cylinder space 110 into the containers 26, 28, 44.
  • the liquid leaves the cylinder space 110 via the outlet opening 132 and enters the pipes 50 and 52, which run to the sprayers 14, 16.
  • the cylinder chamber 122 is placed at atmospheric air pressure by the changeover valves 142, 144, which can be electromagnetically actuated control valves.
  • the check valve consisting of the elements 136, 138, 140 closes, as a result of which a return flow of liquid from the sprayers 14, 16 and the pipelines 50, 52 is prevented.
  • This check valve is set so that it closes when the pressure in the cylinder space 10 drops to 0.2 MPa (2 bar).
  • dripping on the spraying devices 14, 16 is advantageously prevented, so that there can be no undesirable influencing of the surface of the open mold 18, 20 by drops.
  • the pumps 46, 48 are arranged lower than the sprayers 14, 16.
  • the piston 114 which can be rotated in one piece, has a certain axial extent, so that a low pressure is sufficient to actuate the piston 114. If liquid gets into the intermediate space 130, this is removed via the check valve 128. This ensures that piston 114 operates smoothly and correctly. Since the cylinder 112 is operated at low pressure, the jacket 60 can be thin-walled.
  • the level control makes it possible to design the central containers 26, 28, 44 with a small volume.
  • a feed from the water supply network can also be carried out, with a pressure reducing valve being used to adapt the pressure to the pressure at the mixing valves 38, 40 which is dependent on the installation height of the containers 26, 28.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)
  • Accessories For Mixers (AREA)
  • Casting Devices For Molds (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Detergent Compositions (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Claims (15)

1. Dispositif pour l'alimentation d'appareils de pulvérisation (14, 16) pour des machines de coulée sous pression, avec un liquide contenant de l'eau et des additifs pour être épandu sur la paroi interne de moules de fonderie ouverts (18, 20), comportant au moins un réservoir central (26, 28), dans lequel est stockée de l'eau avec des additifs, un autre réservoir central (44), avec des réseaux de conduites (36, 42) reliant ces réservoirs (26, 28, 44) et comportant des installations de refoulement (46, 48), caractérisé en ce que la concentration de l'eau en additifs dans le réservoir (26, 28) est réglée sur une valeur maximale, nécessaire pour des matériaux à couler, des moules (18, 20) et des procédés de coulée sous pression déterminés, procédés appliqués sur les machines de coulée sous pression (10, 12), et en ce que les réservoirs (26, 28, 44) sont raccordés, par l'intermédiaire des réseaux de conduites (36, 42), avec des vannes de mélange (38, 40) prévues chacune pour les machines de coulée sous pression (10, 12), vannes de mélange à la suite desquelles sont raccordées les dispositifs de refoulement (46, 48), auxquels sont eux-même raccordés, par des conduites (50, 52), les appareils de pulvérisation (14,16).
2. Dispositif suivant la revendication 1, caractérisé en ce qu'il est prévu un nombre de réservoirs centraux (26, 28) correspondant au type des matériaux de coulée à traiter dans les machine de coulée sous pression (10, 12), réservoirs dans chacun desquels sont stockés des liquides constitues par de l'eau et des additifs à la concentration la plus élevée nécessaire pour chaque matériau à couler avec un moule (18, 20) correspondant adapté, et en ce que les réservoirs centraux (26, 28) sont reliés, par l'intermédiaire de robinets d'inversion (34), à un réseau de canalisations (36) auquel sont raccordés les soupapes de mélange (38,40).
3. Dispositif suivant l'une quelconque des revendications précédentes, caractérisé en ce que les réservoirs centraux (26, 28, 44) sont tous placés à la même hauteur.
4. Dispositif suivant l'une quelconque des revendications précédentes, caractérisé en ce que les dispositifs de refoulement (46, 48) sont réalisés sous la forme de pompes à piston dont les cylindres (112) sont debout ou couchés.
5. Dispositif suivant la revendication 4, caractérisé en ce que le piston (114) de chaque pompe à piston présente deux disques (116, 118) disposés à distance l'un de l'autre, disques dont l'un est situé du côté de la chambre du cylindre (110) destinée à recevoir le liquide et l'autre du côté de la chambre du cylindre (122) qui peut être alimentée en gaz sous pression, et qui peut être reliée, en cas d'augmentation de la surpression, avec l'espace intermédiaire (130) délimité par les deux disques (116, 118), par l'intermédiaire d'une soupape anti-retour (128).
6. Dispositif suivant la revendication 5, caractérisé en ce que la chambre du cylindre (122) pouvant être alimentée en gaz sous pression peut être reliée, par l'intermédiaire d'un robinet d'inversion (142, 144) avec la source d'air comprimé (126) prévue pour chaque appareil de pulvérisation (14, 16).
7. Dispositif suivant la revendication 6, caractérisé en ce qu'une soupape anti-retour (136, 138, 140) est placée à la sortie de la chambre du cylindre alimentée en liquide (110).
8. Dispositif suivant l'une quelconque des revendications précédentes, caractérisé en ce qu'un corps cylindrique (76) monté à rotation dans un carter (72) de la vanne de mélange (38, 40) présente un évidement centré (82), ouvert sur un côté, et une fente radiale (84) qui peut tourner en face de deux orifices d'admission dans une paroi du carter pour le liquide et pour l'eau, en faisant varier en sens opposé les sections d'admission, tandis que des soupapes anti-retour sont installées avant les orifices d'admission.
9. Dispositif suivant la revendication 8, caractérisé en ce que le corps cylindrique (76) présente une partie (80) dépassant en dehors du carter (72) et à laquelle est fixé un levier (98).
10. Dispositif suivant la revendication 9, caractérisé en ce qu'un moteur (106) est relié à la partie (80) dépassant du carter (72) du corps cylindrique (76) de la soupape de mélange (38,40).
11. Dispositif suivant la revendication 10, caractérisé en ce qu'un capteur de position angulaire est relié à la partie (80) dépassant du carter (72).
12. Dispositif suivant la revendication 11, caractérisé en ce que le cylindre (112) des dispositifs de refoulement (46, 48) est composé de deux flasques (62,64) et d'une virole cylindrique (60) disposée entre les flasques (62, 64).
13. Dispositif suivant la revendication 12, caractérisé en ce que dans le cylindre (112) sont prévues des butées (146), avec lesquelles on peut régler la grandeur de la course du piston (114).
14. Dispositif suivant l'une quelconque des revendications précédentes, caractérisé en ce que les réservoirs centraux (26, 28, 44) sont munis de régulateurs de niveau.
15. Dispositif suivant l'une quelconque des revendications précédentes, caractérisé en ce que la chambre du cylindre (112) alimentée en gaz sous pression peut être mise à la pression atmosphérique par le robinet d'inversion (142, 144).
EP86900103A 1984-12-04 1985-12-04 Dispositif pour transmettre aux systemes individuels d'arrosage des machines de coulee sous pression un liquide compose d'eau et d'additifs Expired EP0203980B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86900103T ATE43267T1 (de) 1984-12-04 1985-12-04 Vorrichtung zur versorgung von spruehgeraeten fuer druckgiessmaschinen je mit einer wasser und zusaetze enthaltenden fluessigkeit.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3444182 1984-12-04
DE19843444182 DE3444182A1 (de) 1984-12-04 1984-12-04 Vorrichtung zur versorgung von spruehgeraeten fuer druckgiessmaschinen je mit einer wasser und zusaetze enthaltenden fluessigkeit

Publications (2)

Publication Number Publication Date
EP0203980A1 EP0203980A1 (fr) 1986-12-10
EP0203980B1 true EP0203980B1 (fr) 1989-05-24

Family

ID=6251865

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86900103A Expired EP0203980B1 (fr) 1984-12-04 1985-12-04 Dispositif pour transmettre aux systemes individuels d'arrosage des machines de coulee sous pression un liquide compose d'eau et d'additifs

Country Status (8)

Country Link
US (1) US4721150A (fr)
EP (1) EP0203980B1 (fr)
JP (1) JP2608057B2 (fr)
KR (1) KR870700031A (fr)
AT (1) ATE43267T1 (fr)
AU (1) AU5230386A (fr)
DE (2) DE3444182A1 (fr)
WO (1) WO1986003438A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5435390A (en) * 1993-05-27 1995-07-25 Baker Hughes Incorporated Remote control for a plug-dropping head
DE19528337C1 (de) * 1995-08-02 1996-11-28 Braas Gmbh Verfahren und Vorrichtung zur Versorgung einer Sprüheinrichtung an einer Formgußmaschine mit einem flüssigen Fertigungshilfsmittel
DE19810032A1 (de) * 1998-03-09 1999-09-16 Acheson Ind Inc Verfahren und Vorrichtung zum Vorbereiten der Formwandungen einer Form zur Urformung bzw. Umformung auf den nächstfolgenden Formungszyklus, Sprühelement mit Zentrifugalzerstäubung und Luftführung und Verwendung eines derartigen Sprühelements zum Versprühen im wesentlichen lösungsmittelfreien Formwandbehandlungsmittels
US6830200B1 (en) 2001-07-31 2004-12-14 Honda Motor Co., Ltd. Mold spraying system
US6616848B2 (en) 2001-10-11 2003-09-09 Honda Giken Kogyo Kabushiki Kaisha Die lube recovery system and method
DE102009010361B3 (de) * 2009-02-25 2010-10-28 Ks Aluminium-Technologie Gmbh Verfahren und Sprühvorrichtung zum Aufbringen eines Oberflächenbehandlungsmittels auf eine Formwand einer Gussform
JP6086895B2 (ja) * 2014-12-12 2017-03-01 ジヤトコ株式会社 金型の冷却装置
CN106042261B (zh) * 2016-07-22 2018-05-22 成都盛达强科技开发有限公司 一种列排式反应注射成型机组
IT201800006906A1 (it) * 2018-07-04 2020-01-04 Procedimento ed impianto di dosaggio di un diluito
US20210121906A1 (en) * 2019-10-25 2021-04-29 Lincoln Global, Inc. Programmable networked variable atomizer (pnva) system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4186769A (en) * 1978-01-25 1980-02-05 Chem-Trend, Inc. Liquid mixing and delivering aparatus

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2587722A (en) * 1950-11-29 1952-03-04 Louis D Garratt Treatment of mold surfaces
DE1296743B (de) * 1964-04-04 1969-06-04 Bayerische Manufaktur Fuer Klu Vorrichtung zur Einbringung von Trenn- oder Schmiermitteln auf die Formhaelften einer Druckgiessmaschine
DE1284250B (de) * 1965-10-30 1968-11-28 Kaercher Fa Alfred Spruehgeraet zum Verspruehen eines Fluessigkeits-Gemisches
DE2549059C2 (de) * 1975-11-03 1977-10-06 Georg Palzer KG Druckguß Seligenstadt, 6453 Seligenstadt Sprüheinrichtung fur Druckgußformen
US4196769A (en) * 1978-03-20 1980-04-08 Remet Corporation Ceramic shell mold

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4186769A (en) * 1978-01-25 1980-02-05 Chem-Trend, Inc. Liquid mixing and delivering aparatus

Also Published As

Publication number Publication date
JP2608057B2 (ja) 1997-05-07
DE3444182C2 (fr) 1987-10-22
WO1986003438A1 (fr) 1986-06-19
JPS62501276A (ja) 1987-05-21
EP0203980A1 (fr) 1986-12-10
KR870700031A (ko) 1987-02-28
DE3444182A1 (de) 1986-06-12
DE3570380D1 (en) 1989-06-29
AU5230386A (en) 1986-07-01
US4721150A (en) 1988-01-26
ATE43267T1 (de) 1989-06-15

Similar Documents

Publication Publication Date Title
EP0203980B1 (fr) Dispositif pour transmettre aux systemes individuels d'arrosage des machines de coulee sous pression un liquide compose d'eau et d'additifs
EP0120419A1 (fr) Installation pour produire des objets à partir de deux ou de plusieurs composantes réactionnelles de matières plastiques pouvant être fluidifiées
DE2730375A1 (de) Anlage zum mischen und ausgeben mindestens zweier fluider medien
DE2711101A1 (de) Verdraenger-einspritzpumpe
EP0810917B1 (fr) Dispositif pour distribuer des materiaux coulants composes d'au moins deux constituants mutuellement reactifs, notamment des resines de coulees
DE3005231A1 (de) Mischkopf mit einem staubkoerper
EP0028808A2 (fr) Dispositif de transport et de dosage de matières abrasives
DE3015215A1 (de) Vorrichtung zur dosierten abgabe eines komprimierten gasfoermigen mediums
EP0283832B1 (fr) Dispositif pour le prélèvement et le dosage précis de milieux fluides
AT401693B (de) Zumischeinrichtung zum zumischen von zusatzmitteln zu einer flüssigkeit
DE2330382A1 (de) Anordnung zum entfernen von gas aus einer vorrichtung mit einem zylinder und einem darin bewegbaren kolben
DE1473100A1 (de) Ausgleichspumpe
DE3504107C2 (fr)
DE2744776A1 (de) Vorrichtung zum wechseln von schmieroel in maschinen
EP0301016B1 (fr) Dispositif de dosage et de melange de systemes a composants fluides multiples
DE904498C (de) Anlage zum Pumpen von Fluessigkeiten, insbesondere solcher, die feste Teilchen enthalten
DE3117027C2 (fr)
DE869605C (de) Ausliterschrank mit selbstgesteuerter Fluessigkeitsmess- und -zapfeinrichtung
DE2821141A1 (de) Spruehgeraet zum verspruehen dickfluessiger medien und druckluft
DE2654049A1 (de) Verteiler in fluessigkeitsleitenden systemen
DE215234C (fr)
DE1550065B1 (de) Einrichtung zur Steuerung der Be- und Entladung von entfernt von der Kueste an einer Boje od.dgl. anlegenden Tankschiffen
DE1138657B (de) Vorrichtung zum Ausschenken von Fluessigkeiten
DE1573009A1 (de) Messeinrichtung zur Abmessung von Fluessigkeiten
DE1236339B (de) Vorrichtung zum Dosieren von Fluessigkeiten

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19861212

17Q First examination report despatched

Effective date: 19870820

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI NL SE

REF Corresponds to:

Ref document number: 43267

Country of ref document: AT

Date of ref document: 19890615

Kind code of ref document: T

ITF It: translation for a ep patent filed

Owner name: JACOBACCI & PERANI S.P.A.

REF Corresponds to:

Ref document number: 3570380

Country of ref document: DE

Date of ref document: 19890629

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19921216

Year of fee payment: 8

Ref country code: FR

Payment date: 19921216

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19921222

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19921229

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19921231

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19930108

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19930118

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19931204

Ref country code: AT

Effective date: 19931204

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19931205

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19931231

Ref country code: CH

Effective date: 19931231

Ref country code: BE

Effective date: 19931231

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19940509

Year of fee payment: 9

BERE Be: lapsed

Owner name: BAYRISCHES DRUCKGUSSWERK THURNER G.M.B.H. & CO. K

Effective date: 19931231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19940701

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19931204

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19940831

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

EUG Se: european patent has lapsed

Ref document number: 86900103.2

Effective date: 19940710

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19950901