EP0722373A1 - Dispositif de remplissage de tetes de soufflage - Google Patents

Dispositif de remplissage de tetes de soufflage

Info

Publication number
EP0722373A1
EP0722373A1 EP94928751A EP94928751A EP0722373A1 EP 0722373 A1 EP0722373 A1 EP 0722373A1 EP 94928751 A EP94928751 A EP 94928751A EP 94928751 A EP94928751 A EP 94928751A EP 0722373 A1 EP0722373 A1 EP 0722373A1
Authority
EP
European Patent Office
Prior art keywords
filling
machine frame
filling device
weighing
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
EP94928751A
Other languages
German (de)
English (en)
Other versions
EP0722373B1 (fr
Inventor
Werner Landua
Werner Pichler
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.)
Adolf Hottinger Maschinenbau GmbH
Original Assignee
Adolf Hottinger Maschinenbau 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 Adolf Hottinger Maschinenbau GmbH filed Critical Adolf Hottinger Maschinenbau GmbH
Publication of EP0722373A1 publication Critical patent/EP0722373A1/fr
Application granted granted Critical
Publication of EP0722373B1 publication Critical patent/EP0722373B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C19/00—Components or accessories for moulding machines
    • B22C19/04—Controlling devices specially designed for moulding machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
    • B22C15/23—Compacting by gas pressure or vacuum
    • B22C15/24—Compacting by gas pressure or vacuum involving blowing devices in which the mould material is supplied in the form of loose particles

Definitions

  • the invention relates to a device for filling shot heads with molding materials, with a storage container for molding material, an outlet member for discharging the molding material into the shooting head and a closure device for closing the filling device comprising the outlet member, the filling device for immersing the Exhaust member is vertically movable in the shot head to be filled on a machine frame.
  • Core shooters have been known in foundry technology for many years. To cast molded parts, the casting cores or molds are usually produced in separate parts, brought together and connected to one another to form a casting mold. An essential part of the core shooters are the so-called shot heads with the shot plates carrying the shot nozzles.
  • Form sand, in particular core sand, i.e. Quartz sand which has already been mixed or coated with binder is poured into the shot heads in question and from there it is blown or shot into the respective molds at very high air pressure through the nozzles arranged in the shot plate.
  • a device for filling the shot heads with molding materials is already known from DE 41 28 952 C1, but this is extremely problematic with regard to monitoring the filling status of this device.
  • the filling state of the known device in particular in the area of the storage container, is namely determined by means of measuring probes projecting into the storage container from the outside or ending flush with the inner wall of the storage container, these measuring probes being provided in different positions for determining defined filling levels.
  • these level sensors have at least small steps or discontinuous transitions in the wall on the measurement side, ie towards the interior of the storage container, and thus form critical areas where the non-free-flowing or moist mold can stick or stick to the fabric.
  • the present invention is therefore based on the object of designing and developing a device for filling shot heads of the type in question in such a way that the filling state of the storage container can be determined with simple means or a filling of the filling device can be precisely specified and also reproduced .
  • the device according to the invention for filling shot heads achieves the above object through the features of patent claim 1.
  • the device according to the invention is designed in such a way that a weighing device for determining the weight of the entire filling device is arranged between the filling device and the machine frame.
  • the method of determining the fill level by means of measuring probes which has been proven for years, has been abandoned. Rather, it has been recognized that the filling state of the filling device or the storage container can be determined without adversely affecting the storage container in that the weight of the entire filling device is determined.
  • the filling state of the filling device or the storage container can be determined without adversely affecting the storage container in that the weight of the entire filling device is determined.
  • the weighing device is adjusted or zeroed to the net weight of the entire filling device, so that the weight of the molding material located in the filling device can be determined directly by means of the weighing device.
  • the zeroing to be carried out with respect to the filling device would have the great advantage that a corresponding display device only shows the weight corresponding to the filled molding material, with a direct correlation to the filling condition - on the basis of the bulk density of the molding material and the volume-dependent volume - after processing could also be displayed directly by a processor.
  • a filling of the filling device could be controlled via the data obtained in this way, the amount of molding material required for filling a shot head as well as the number of shot heads to be filled with the contents of the filling device - with one filling - also having to be taken into account here.
  • the weighing device could be articulated on the filling device and act between the filling device and the machine frame. Additional guides or further articulations between the filling device and the machine frame are advantageous for reasons of stability, it only being necessary to ensure that the weight of the filling device actually acts on the weighing device.
  • the weighing device could also be articulated on the machine frame and also act between the machine frame and the filling device. With regard to the articulation of the weighing device, it is only necessary to ensure that it is operatively connected on the one hand to the filling device or a holding part of the filling device and on the other hand to the machine frame or a corresponding holding part of the machine frame and there the mass of the filling device acts unhindered or without external influences on the weighing device.
  • the weighing device is assigned to a lifting device which is articulated on the machine frame or on the filling device and acts between the machine frame and the filling device.
  • This lifting device brings about the vertical mobility of the filling device for immersing the outlet member in the shooting head.
  • the lifting device could comprise a cylinder-piston arrangement serving as a drive, wherein a weighing cell serving as a transmitter of the weighing device could in turn be an integral part of the cylinder-piston arrangement.
  • the force absorption could take place via load cells, on which the mass of the filling device acts directly or indirectly, for example also via a hydraulic pressure medium.
  • an inventive device for filling shot heads with a weighing device for determining the weight of the filling device.
  • the single figure shows a schematic representation of a device for filling shot heads 1 with molding materials 2, with a storage container 3 for molding material 2, an outlet member 4 for discharging the molding material 2 into the shot head 1 and a closing device 5 for closing the outlet member 4 comprising the filling device 6, the filling device 6 for immersing the outlet member 4 in the shot head 1 to be filled on a machine frame 7 vertically is movably supported.
  • a weighing device 8 for determining the weight of the entire filling device 6 is arranged between the filling device 6 and the machine frame 7. It is important here that the weighing device 8 is set or zeroed to the net weight of the filling device 6, so that the weight of the molding material 2 located in the filling device 6 can be determined by means of the weighing device 8, which is only shown schematically here.
  • the single figure further shows that the weighing device 8 is articulated on the one hand on the filling device 6 or on a holder 9 provided there and on the other hand on a lifting device 10 acting between the machine frame 7 and the filling device 6 and thus between the filling device 6 and the machine frame 7 acts.
  • the weighing device 8 it is also possible to integrate the weighing device 8 into the lifting device 10, whereby the weight can be determined with the aid of a pressure which is increased in a cylinder-piston arrangement due to the mass of the filling device 6.
  • the teaching claimed here relates in principle to the determination of the filling state of a device for filling shot heads, namely on the basis of a weight determination of the filling device. Any other refinements of the teaching are conceivable without being restricted to the exemplary embodiment mentioned above merely by way of example.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Weight Measurement For Supplying Or Discharging Of Specified Amounts Of Material (AREA)

Abstract

Un dispositif de remplissage de têtes de soufflage (1) avec des matières à mouler (2) comprend un réservoir (3) de matières à mouler (2), un organe (4) de décharge des matières à mouler (2) dans la tête de soufflage (1) et un organe de remplissage (6) qui comprend un organe de fermeture (5) de l'organe de décharge (4). L'organe de remplissage (6) est monté mobile en hauteur sur un bâti (7) de la machine, ce qui permet d'introduire l'organe de décharge (4) dans la tête de soufflage (1) à remplir. Afin d'assurer un remplissage prédéterminable et reproductible avec précision de l'organe de remplissage (6) avec des matières à mouler et d'autre part une détermination précise du niveau de remplissage de l'organe de remplissage (6), un dispositif de pesage (8) qui sert à déterminer le poids de l'organe de remplissage (6) est monté entre l'organe de remplissage (6) et le bâti (7) de la machine.
EP94928751A 1993-10-07 1994-10-06 Dispositif de remplissage de tetes de soufflage Expired - Lifetime EP0722373B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4334118A DE4334118C2 (de) 1993-10-07 1993-10-07 Vorrichtung zum Füllen von Schußköpfen
DE4334118 1993-10-07
PCT/DE1994/001169 WO1995010375A2 (fr) 1993-10-07 1994-10-06 Dispositif de remplissage de tetes de soufflage

Publications (2)

Publication Number Publication Date
EP0722373A1 true EP0722373A1 (fr) 1996-07-24
EP0722373B1 EP0722373B1 (fr) 1997-06-11

Family

ID=6499567

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94928751A Expired - Lifetime EP0722373B1 (fr) 1993-10-07 1994-10-06 Dispositif de remplissage de tetes de soufflage

Country Status (7)

Country Link
US (1) US5671798A (fr)
EP (1) EP0722373B1 (fr)
JP (1) JP2977093B2 (fr)
CA (1) CA2173491A1 (fr)
DE (2) DE4334118C2 (fr)
ES (1) ES2104422T3 (fr)
WO (1) WO1995010375A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101362191B (zh) * 2008-09-11 2010-06-09 冯新林 射芯机多功能下压气包
CN101352752B (zh) * 2008-09-11 2010-06-02 冯新林 冷芯盒射芯机

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1025108B (de) * 1956-05-03 1958-02-27 Badische Maschinenfabrik Ag Se Vorrichtung zum gewichtsmaessigen Abmessen und Zuteilen einer vorbestimmten Formsandmenge fuer Formkasten
DE2304564A1 (de) * 1973-01-31 1974-08-08 Cobomat Apparatebau Gmbh Vorrichtung zur automatischen herstellung von formen und kernen fuer giessereizwecke
JPS55126344A (en) * 1979-03-19 1980-09-30 Sintokogio Ltd Mold molding apparatus
SU1507509A1 (ru) * 1985-08-15 1989-09-15 Всесоюзный научно-исследовательский институт литейного машиностроения, литейной технологии и автоматизации литейного производства Способ определени параметров отработанной формовочной смеси
CH671895A5 (fr) * 1986-12-22 1989-10-13 Foundry Design Corp Europ
JP2627805B2 (ja) * 1989-07-10 1997-07-09 新東工業株式会社 鋳物砂の鋳枠への投入装置
US5078201A (en) * 1989-11-27 1992-01-07 Osaka Shell Industry Co., Ltd. Casting core fabricating apparatus
JP2912722B2 (ja) * 1991-02-21 1999-06-28 日産自動車株式会社 造型機用型砂供給量制御装置
DE4128952C1 (fr) * 1991-08-30 1992-07-09 Adolf Hottinger Maschinenbau Gmbh, 6800 Mannheim, De

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9510375A2 *

Also Published As

Publication number Publication date
EP0722373B1 (fr) 1997-06-11
DE4334118C2 (de) 1997-01-30
JP2977093B2 (ja) 1999-11-10
US5671798A (en) 1997-09-30
WO1995010375A2 (fr) 1995-04-20
CA2173491A1 (fr) 1995-04-20
DE59403134D1 (de) 1997-07-17
WO1995010375A3 (fr) 1995-08-03
DE4334118A1 (de) 1995-04-13
ES2104422T3 (es) 1997-10-01
JPH08510964A (ja) 1996-11-19

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