EP1345716B2 - Speiser mit einem rohrähnlichen körper - Google Patents

Speiser mit einem rohrähnlichen körper Download PDF

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Publication number
EP1345716B2
EP1345716B2 EP01998419.4A EP01998419A EP1345716B2 EP 1345716 B2 EP1345716 B2 EP 1345716B2 EP 01998419 A EP01998419 A EP 01998419A EP 1345716 B2 EP1345716 B2 EP 1345716B2
Authority
EP
European Patent Office
Prior art keywords
feeder
casting
tubular body
feeder system
moulding material
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 - Lifetime
Application number
EP01998419.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1345716B1 (de
EP1345716A2 (de
Inventor
Udo Skerdi
Georg Scheerer
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.)
ASK CHEMICALS FEEDING SYSTEMS GmbH
Original Assignee
ASK CHEMICALS FEEDING SYSTEMS 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26007847&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1345716(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from DE2000159481 external-priority patent/DE10059481B4/de
Priority claimed from DE2001142357 external-priority patent/DE10142357B4/de
Application filed by ASK CHEMICALS FEEDING SYSTEMS GmbH filed Critical ASK CHEMICALS FEEDING SYSTEMS GmbH
Publication of EP1345716A2 publication Critical patent/EP1345716A2/de
Application granted granted Critical
Publication of EP1345716B1 publication Critical patent/EP1345716B1/de
Publication of EP1345716B2 publication Critical patent/EP1345716B2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
    • B22C9/084—Breaker cores

Definitions

  • the invention relates to a feeder system for a casting with a feeder (head) and a tube-like body.
  • feeders i. open or closed spaces in or on the mold, used to compensate for the volume deficit in the solidification of the casting and to prevent voids in the casting.
  • the feeders are connected to the casting or to the vulnerable casting area and are usually arranged above or on the side of the mold cavity.
  • the DE 41 19 192 A1 describes a resilient mandrel for holding feeders.
  • the feeder inserts are attached to a mandrel connected to the mold and preferably formed in the upper box. Since the material of the feeder is very yielding and the sand pressure during molding in the molding plant can easily lead to damage of the feeder used, it is known to form the spring resiliently axially movable, so that the molded feeder the sand pressure in the direction of the model can dodge.
  • the DE 42 00 183 A1 relates to a two-part feeder having a feeder foot of an exothermic material adjacent to the casting and having a cavity having the cavity, the feeder foot having an elongate oval connection opening to the casting, and the oval connection opening for passage of the feeder on the casting model the forming operation fixing mandrel is set up.
  • the feeders are arranged approximately at the gate height and also equipped with a heat-insulating material or exothermic masses so that the melt located in the feeder solidifies later than the casting itself. After solidification, the feeder remains connected to the casting so that the remainder of the feeder must then be separated.
  • the clean and easy separation of the feeder from the casting is problematic in many cases.
  • the casting surface must still be deburred and smoothed. This is a complex and correspondingly expensive operation, which can also lead to damage to the surface of the casting at the junction with the feeder.
  • so-called refractive cores also called breaking edge, sanding strip or constrictor core
  • refractive cores also called breaking edge, sanding strip or constrictor core
  • the known feeders are either relatively expensive in their construction or handling in the production of the mold and / or ensure no easy and precise separation of the residual feed from the finished casting or require a relatively large top surface.
  • the aim of the present invention was thus to provide a feeder system which avoids the disadvantages of the prior art and in particular has a simple structure, can be easily attached to the casting mold or formed, only requires small attachment surfaces and still requires a precisely positioned breaking edge directly on the casting allows easy and safe separation of the residual feed from the finished casting.
  • feeder includes any known in the art or familiar to the expert form of feeders, feeder covers, feeder inserts and feeder caps and heating pads.
  • the present invention is in principle useful for all types of feeders in which the tube-like body can be arranged in the manner indicated below.
  • Mini-feeder which are conventionally formed with breaker core or by using a spring mandrel.
  • the feeder system consists of at least two parts.
  • a feeder or feeder head is provided on the side facing away from the casting, which provides a cavity for receiving the liquid metal during casting.
  • a tube-like body connects, which connects, directly or indirectly, the cavity formed by the feeder head with the cavity of the mold.
  • the tube-like body may have any length and wall thickness and diameter suitable in the individual case.
  • the wall thickness depending on the material used, is generally between 0.1 mm and 10 mm, in particular between 0.3 mm and 5 mm, particularly preferably 0.3 mm to 0.5 mm. The optimum dimensions can be determined on a case-by-case basis by means of routine tests or are known to the person skilled in the art on the basis of his experience.
  • the wall thicknesses also vary due to the material and can be for example for steel sheet and when using a spring mandrel mini-feeder at about 0.3 mm to 0.5 mm.
  • the tube-like body has a length of between about 15 and about 300 mm, in particular between about 35 and about 100 mm.
  • the length of the tube-like body is chosen in an embodiment according to the invention so that at least the distance between the feeder (before molding, possibly on the mandrel) and the casting is bridged.
  • the inner diameter of the tube-like body can in principle be chosen arbitrarily, wherein the opening should be large enough to ensure the flow of the melt into and out of the feeder during the casting and solidification process.
  • the diameter of the tube-like body usually orients itself, but not necessarily, to the inner diameter of the feeder because, according to one embodiment of the present invention, the tube-like body is fitted into the feeder (head). However, it is also a different attachment to or in the feeder (head) possible.
  • the tubular body may have any cross-sectional shape, in particular a round, oval or polygonal or polygonal geometry.
  • the tube-like body is a tube with a substantially uniform cross-section over its entire length.
  • the ratio of wall thickness to the overall diameter of the tube is between about 1: 2 and 1: 200, in particular 1: 5 to 1: 120, and particularly preferably 1:10 to 1: 100.
  • the ratio of length to overall diameter of the tube is preferably between about 1: 4 and 15: 1, in particular 1: 1 and 6: 1. In particular, the ratios depend on the shape of the feeder and the casting mold.
  • the feeder head may be formed of any insulating and / or exothermic material known in the art to ensure that the melt in the feeder solidifies later than the casting itself.
  • the feeder from the in the DE 199 25 167 the same applicant disclosed to be prepared exothermic feeder masses.
  • the tube-like body may be formed of any suitable material which has a corresponding strength and does not exert any disturbing reactions on the casting to be fed. These materials are known to those skilled in the art and include, for example, metal, plastic, cardboard, ceramics or similar materials.
  • the tube-like body consists of a casting program similar material, such as aluminum or iron sheet.
  • the tube-like body is in an advantageous embodiment of the present invention with the outer circumference closely to the feeder or feeder head and is preferably attached to the feeder (head) by means known to those skilled in the art, e.g. by means of an adhesive such as hot glue or water glass, by a wedge or by means of fit. He can also simply be plugged into the feeder (head).
  • the tube-like body is movable relative to the feeder or feeder head and / or the casting or the hollow body at least within certain limits.
  • the distance between the pipe-like body and the casting can be easily adjusted prior to molding so that after molding or densification of the molding material the tube-like body forms an optimally positioned crushing edge which is as close as possible to the finished casting.
  • the tube-like body tapers towards the casting-facing end or has a tapering section or a narrowing of the inner diameter.
  • the tube-like body tapers toward the casting and forms a breaking edge directly at the transition to the casting mold or in the immediate vicinity.
  • a certain portion preferably the portion facing the casting, may have a taper or a constriction of the (inner) diameter.
  • the tube-like body serves to provide a deformable neck of the feeder and, on the other hand, to provide a precise and firmly positioned breaking edge.
  • the breaking edge is preferably provided as a constriction of the opening or the inside diameter at or in the vicinity of the casting-facing end of the tube-like body.
  • the dimensioning of the tube-like body optimizes the position and shape of the crushing edge, for example by using a relatively narrow tube with a small diameter or a corresponding arrangement of the feeder or feeder head, so that this after molding or Compacting of the molding material is quite close (but not directly on the casting).
  • the feeder system according to the invention further comprises a mandrel, in particular a spring mandrel.
  • the feeder connected to the pipe is held up by the spring mandrel accordingly.
  • the tube stands on the form or on the beveled base of the spring mandrel.
  • the feeder is guided down the pipe to the corresponding end position by the spring mandrel.
  • the tube remains firmly in the original position. This ensures that a defined breaking edge is provided directly on the casting.
  • any core, mandrel or spring mandrel that appears suitable for the person skilled in the art can be used.
  • the tube-like body can either grip completely over the spring mandrel or stand up on its base. In both cases, a connection is made (directly or indirectly) between the mold cavity and the tube-like body.
  • the tubular body can be used as Federdorn- or guide mandrel replacement.
  • the feeder is guided over the tube-like body which rests on the mold. If necessary centering over a fixed mandrel, which can be of different lengths.
  • the fixed mandrel has a maximum length of the tube-like body. In many cases, however, it may be advantageous that the fixed mandrel is shorter than the tube-like body and the latter is at least partially pushed over the fixed mandrel.
  • the feeder then slides over the tube-like body.
  • the feeder is destroyed at the top by the tube-like body. The food particles are embedded in the molding sand.
  • the tube-like body must be adjusted for each casting so that the distance between feeder and casting still leads to a sufficient supply. Often this distance will be between 5 to 25 mm.
  • the tube-like body may be open or closed.
  • the tube-like body if it is open on the side facing away from the casting, can be supported by a relatively long mandrel, in which case preferably the tubular body is made of a solid material, such as steel sheet, e.g. with a material thickness of about 0.7 mm.
  • a solid material such as steel sheet, e.g. with a material thickness of about 0.7 mm.
  • other solid materials such as plastic, e.g. PE, or ceramic, advantageous.
  • the tube-like body is perforated in the upper region in order to ensure a good ignition of the feeder. For casting down holes or openings in the tube-like body should not be present, as far as this would lead to the penetration of molding sand during molding.
  • the tube-like body is not directly connected to the casting or the hollow body before the molding or the compression of the molding material or on the spring mandrel ( if available).
  • the feeder system can be designed so that the tube-like body moves during the molding or the compression of the molding material to the casting or hollow body.
  • the tubular body is relatively thin-walled, so that it can cut during the molding or the compression of the molding material through this to the casting. This can be further facilitated by the fact that the tube-like body is provided at the end facing the casting with a kind of cutting edge or whose wall thickness decreases there or is particularly low.
  • the feeder system is dimensioned in this case and arranged opposite the casting, so that a defined crushing edge is formed between the feeder and the casting with a coordinated spring deflection after molding or complete compression of the molding material on the pipe-like body.
  • the tube-like body in order to push or cut well during the compression of the molding material to the casting, on the one hand a relatively thin mold wall, which allows a penetration through the molding material to the casting or the hollow body.
  • a wall thickness of the tube-like body of about 0.05 to 1 mm, in particular 0.2 to 0.5 mm using a solid material such as steel, plastic or ceramic is used.
  • the tube wall must have sufficient stability, so that it is not destroyed during the compression of the molding material so that no Vietnamesespeisbare connection between hollow body and feeder more. Therefore, the particular preferred wall thickness of the tube-like body depends on the material used. Suitable wall thicknesses will be apparent to those skilled in the art, depending on the material chosen, or may be optimized through routine experimentation.
  • the cutting operation is assisted in that the tube-like body finds a stop or a support in the feeder and is thus pressed together with the feeder or the feeder head to the casting.
  • stop should be understood here to be a special shape on a wall, in particular an inner wall of the feeder or feeder head, which contacts the end of the tube-like body facing away from the casting punctiform or flat at least during the molding or compression of the molding material.
  • the support of the tube-like body relative to the feeder or feeder head also by a corresponding bonding, wedging or fit between the tube-like body and feeder or feeder head done, as already for example in the DE 100 59 481.6 is described, or by a support point or a support surface, which supports the tube-like body relative to the feeder or feeder head at least after molding or compression of the molding material.
  • the tube-like body preferably does not sit on the foot of the spring mandrel before the molding or compression of the molding material, but pushes during the compression of the molding material to the foot of the spring mandrel before. According to the invention it is also possible that the tube-like body cuts or pushes independently in the absence of a spring mandrel to the casting or hollow body.
  • the feeder system according to the invention can be very simply and universally attached to the molds and molded, and ensures a reproducible and optimally positioned crushing edge, even when using a mandrel or spring mandrel. After forming and possibly removing the core or (spring) mandrel, the tube-like body remains in the mold.
  • the assembly of the feeder system can be done either at the factory or only at the customer on the mold.
  • the feeder system makes other methods such as the use of a commercially available breaker core, e.g. a croning refractive core to produce a suitable breaking edge superfluous.
  • a commercially available breaker core e.g. a croning refractive core to produce a suitable breaking edge superfluous.
  • another aspect of the present invention also relates to a casting assembly comprising the feeder system defined above and the casting / the hollow body (and a molding material) or a method for preparing a casting mold using the feeder system according to the invention.
  • the invention relates to the use of a tube-like body for forming a deformable feeder neck with breaking edge in feeders for castings according to claim 18.
  • Fig. 1 is a conventional feeder 1 from an exothermic and / or insulating mass via a spring mandrel 2 placed on the casting 4. For separating or knocking off the feeder remainder no optimal breaking edge is formed.
  • Fig. 2 an inventive feeder system is shown, wherein over the spring pin 2, a tube-like body 3 is guided, which tapers towards the casting 4. As a result, a breaking edge 5 is formed.
  • the tube-like body tapers towards the casting and sits on the foot or base 6 of the spring mandrel.
  • a feeder (head) 1 is placed, wherein a hot glue seam 7 is provided for sealing between the feeder and pipe circumference.
  • the feeder assumes the position indicated by coarse hatching, wherein the relative movement between the tube-like body and feeder takes place and the positioning of the breaking edge on the tube-like body with respect to the casting remains unchanged.
  • an optimal positioning of the crushing edge is guaranteed regardless of the final position of the feeder after molding.
  • Fig. 3 an inventive feeder system is shown, wherein on the inner wall of the feeder (head) 1 there is a projection or a stop 8 for the tube-like body 3 is provided.
  • the tube-like body 3 tapers towards the casting or hollow body 4 and can cut through the molding material during the molding or the compression of the molding material or advance toward the casting.
  • the spring travel in the compression of the molding material can be adjusted so that the breaking edge forms at the foot of the mandrel 2 near the casting. It is also possible that the tube-like body has no taper and is formed substantially cylindrical.
  • Fig. 3a the feeder system is shown before the compression of the molding material, wherein the casting-facing end of the tube-like body is not seated on the foot 9 of the spring mandrel or is directly connected to the casting or the hollow body.
  • Fig. 3b the feeder system is shown after the compression of the molding material, wherein the tubular body is directly connected to the hollow body or seated on the foot 9 of the spring mandrel 2, if present, or the casting.
  • Figs. 4a and 4b a further embodiment of the invention is shown, wherein the tube-like body 3 has holes or openings 10 in the part facing away from the casting.
  • the tube-like body is already on the casting 4 prior to molding or compression of the molding material.
  • the feeder head 1 has been deliberately destroyed in the upper region 1 ', wherein a relative movement between the tube-like body 3 and the feeder head 1 is carried out.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Continuous Casting (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Surgical Instruments (AREA)
  • Massaging Devices (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Hydroponics (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
EP01998419.4A 2000-11-30 2001-11-02 Speiser mit einem rohrähnlichen körper Expired - Lifetime EP1345716B2 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE10059481 2000-11-30
DE2000159481 DE10059481B4 (de) 2000-11-30 2000-11-30 Speiser mit einem rohrähnlichen Körper
DE10142357 2001-08-30
DE2001142357 DE10142357B4 (de) 2001-08-30 2001-08-30 Speiser mit einem rohrähnlichen Körper
PCT/EP2001/012730 WO2002043899A2 (de) 2000-11-30 2001-11-02 Speiser mit einem rohrähnlichen körper

Publications (3)

Publication Number Publication Date
EP1345716A2 EP1345716A2 (de) 2003-09-24
EP1345716B1 EP1345716B1 (de) 2007-01-03
EP1345716B2 true EP1345716B2 (de) 2013-07-24

Family

ID=26007847

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01998419.4A Expired - Lifetime EP1345716B2 (de) 2000-11-30 2001-11-02 Speiser mit einem rohrähnlichen körper

Country Status (8)

Country Link
US (2) US6904952B2 (ja)
EP (1) EP1345716B2 (ja)
JP (2) JP4379856B2 (ja)
AT (1) ATE350181T1 (ja)
AU (1) AU2002223665A1 (ja)
DE (2) DE20115140U1 (ja)
ES (1) ES2280436T5 (ja)
WO (1) WO2002043899A2 (ja)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20115140U1 (de) * 2000-11-30 2002-01-31 Luengen Gmbh & Co Kg As Speiser mit einem rohrähnlichen Körper
GB0325134D0 (en) 2003-10-28 2003-12-03 Foseco Int Improved feeder element for metal casting
DE502005007619D1 (de) * 2004-03-31 2009-08-13 Luengen Gmbh As Speiser mit verformbarer tülle
DE102004017062A1 (de) * 2004-04-02 2005-10-20 Luengen Gmbh & Co Kg As Schirm- oder Dübelspeiser
DE102005008324A1 (de) * 2005-02-23 2006-08-24 AS Lüngen GmbH & Co. KG Speiser mit beweglicher Tülle
DE102005011644A1 (de) * 2005-03-14 2006-09-21 AS Lüngen GmbH & Co. KG Exotherme und isolierende Speisereinsätze mit hoher Gasdurchlässigkeit
DE102005025701B4 (de) * 2005-06-04 2007-03-08 GTP Schäfer Gießtechnische Produkte GmbH Speiser mit nachgiebigem Speiserunterteil
DE102006025441A1 (de) * 2006-05-31 2007-12-06 Süd-Chemie AG Prüfvorrichtung für Rohrbündelreaktoren
JP5031700B2 (ja) * 2008-09-09 2012-09-19 有限会社フオセコ・ジャパン・リミテッド 砂鋳型の製造方法及び治具
PT2489450E (pt) * 2011-02-17 2014-10-24 Foseco Int Elemento alimentador
SI2956256T1 (en) 2013-02-15 2018-08-31 Chemex Gmbh An adapter and a procedure for its distribution in the form
DE102013209775B3 (de) * 2013-05-27 2014-10-23 Chemex Gmbh Speisereinsatz
EP2815819B1 (en) * 2013-06-21 2017-07-05 LMA Motif Al. Döküm San. Müm. Ltd. Sti. Exothermic feeder
DE202013104863U1 (de) 2013-10-30 2013-11-15 GTP Schäfer Gießtechnische Produkte GmbH Speisereinsatz mit einem in seinem Deckelbereich angeordneten Stopfen
GB201415516D0 (en) 2014-09-02 2014-10-15 Foseco Int Feeder system
CN105522115B (zh) * 2014-09-30 2017-12-19 济南圣泉倍进陶瓷过滤器有限公司 补缩装置和系统及高压造型方法
JP6669858B2 (ja) * 2015-09-02 2020-03-18 フォセコ インターナショナル リミテッドＦｏｓｅｃｏ Ｉｎｔｅｒｎａｔｉｏｎａｌ Ｌｉｍｉｔｅｄ 押湯システム
TR201510862B (tr) 2015-09-02 2018-08-27 Foseco Int Besleme elemani
WO2016166497A1 (en) 2015-09-02 2016-10-20 Foseco International Limited Feeder system
DE102015120866A1 (de) * 2015-12-01 2017-06-01 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Verfahren zur Herstellung von feuerfesten Kompositpartikeln und von Speiserelementen für die Gießereiindustrie, entsprechende Speiserelemente und Verwendungen
DE102017131280A1 (de) * 2017-12-22 2019-06-27 Chemex Foundry Solutions Gmbh Verfahren zum Herstellen eines Formteils sowie Speisereinsatz zur Verwendung in einem solchen Verfahren
CN110744030B (zh) * 2019-11-05 2021-10-19 杭州杭富锅炉成套设备有限公司 一种锅炉管道小半径的制作方法
EP3819042A1 (de) 2019-11-06 2021-05-12 GTP Schäfer Gießtechnische Produkte GmbH Speisereinsatz mit federndem metallfuss
DE202019005681U1 (de) 2019-11-06 2021-06-16 GTP Schäfer Gießtechnische Produkte GmbH Speisereinsatz mit federndem Metallfuß
DE202022105722U1 (de) 2022-10-11 2022-11-04 Ask Chemicals Gmbh Speiser mit beweglicher Tülle

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DE4119192A1 (de) † 1991-06-11 1992-12-17 Hoesch Ag Federnder dorn zum halten von speisern
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DE20115140U1 (de) * 2000-11-30 2002-01-31 Luengen Gmbh & Co Kg As Speiser mit einem rohrähnlichen Körper
DE20112425U1 (de) * 2001-07-27 2001-10-18 Gtp Schaefer Giestechnische Pr Speisereinsatz mit metallischem Speiserfuß

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DE4119192A1 (de) † 1991-06-11 1992-12-17 Hoesch Ag Federnder dorn zum halten von speisern
DE19642838A1 (de) † 1996-10-17 1997-07-31 Daimler Benz Ag Speiser für ein metallisches Gußwerkstück

Also Published As

Publication number Publication date
ATE350181T1 (de) 2007-01-15
WO2002043899A3 (de) 2002-09-26
AU2002223665A1 (en) 2002-06-11
JP2009006401A (ja) 2009-01-15
US6904952B2 (en) 2005-06-14
US20040050526A1 (en) 2004-03-18
DE20115140U1 (de) 2002-01-31
ES2280436T5 (es) 2013-12-13
JP4379856B2 (ja) 2009-12-09
EP1345716B1 (de) 2007-01-03
WO2002043899A2 (de) 2002-06-06
DE50111827D1 (de) 2007-02-15
EP1345716A2 (de) 2003-09-24
ES2280436T3 (es) 2007-09-16
JP2004532737A (ja) 2004-10-28
US20060000574A1 (en) 2006-01-05
US7320355B2 (en) 2008-01-22

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