EP2956256B1 - Insert de dispositif d'alimentation et procédé permettant d'agencer ledit insert dans un moule - Google Patents

Insert de dispositif d'alimentation et procédé permettant d'agencer ledit insert dans un moule Download PDF

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Publication number
EP2956256B1
EP2956256B1 EP14700282.8A EP14700282A EP2956256B1 EP 2956256 B1 EP2956256 B1 EP 2956256B1 EP 14700282 A EP14700282 A EP 14700282A EP 2956256 B1 EP2956256 B1 EP 2956256B1
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EP
European Patent Office
Prior art keywords
feeder
supply element
mold body
region
feeder insert
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.)
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Application number
EP14700282.8A
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German (de)
English (en)
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EP2956256A1 (fr
Inventor
Lars ZUMBUSCH
Guido BRIEGER
Michael BIEMEL
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.)
Chemex Foundry Solutions GmbH
Original Assignee
Chemex 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
Priority claimed from DE201320001933 external-priority patent/DE202013001933U1/de
Application filed by Chemex GmbH filed Critical Chemex GmbH
Priority to PL14700282T priority Critical patent/PL2956256T3/pl
Priority to SI201430755T priority patent/SI2956256T1/en
Publication of EP2956256A1 publication Critical patent/EP2956256A1/fr
Application granted granted Critical
Publication of EP2956256B1 publication Critical patent/EP2956256B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B22C9/088—Feeder heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C21/00—Flasks; Accessories therefor
    • B22C21/12—Accessories
    • B22C21/14—Accessories for reinforcing or securing moulding materials or cores, e.g. gaggers, chaplets, pins, bars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C23/00—Tools; Devices not mentioned before for moulding

Definitions

  • the present invention relates to a feeder sleeve according to claim 1 for use in casting metals in molds, comprising a shaped body and a feed member defining the feeder cavity for receiving liquid metal, the feed member having a passageway for the liquid metal, and wherein the Shaped body in the feeder longitudinal direction is movable relative to at least a portion of the feed element. Furthermore, the invention also relates to a method for arranging such a feeder insert in a casting mold according to claim 12. Advantageous developments of the invention are specified in subclaims.
  • Previously known feeder inserts also referred to simply as feeders, are used in particular in the production process of casting metals into casting molds.
  • the feeder inserts usually form a space surrounded by a mold material of the mold.
  • the space provided for receiving the liquid metal in the casting mold has a passage to the feeder cavity, in which then during the casting process, a subset of the poured into the mold liquid metal rises.
  • the liquid metal thus obtained in the feeder should be able to flow back into the casting mold during the solidification process (which is associated with a contraction of the cast metal) and serve there for compensation or compensation for the volume loss.
  • the metal in the feeder lines is still liquid, while the metal inside the casting mold is already solidifying (to the casting).
  • at least part of the feeder insert consists of an insulating and / or exothermic material, wherein the exothermic material is ignited by introducing liquid metal, due to the prevailing temperatures.
  • the exothermic material is ignited by introducing liquid metal, due to the prevailing temperatures.
  • Within the feeder sleeve then runs independently exothermic reaction, supplied by the metal located in the feeder over a predetermined period of time thermal energy and thus the metal is kept in the feeder in the liquid state.
  • a feeder sleeve for use in casting metals in molds having a mold body and a feed member defining the feeder cavity for receiving liquid metal;
  • This feeder has proven to be excellent in practice.
  • the feeder element of the feeder has a passage opening for connection from the feeder cavity of the shaped body into the casting cavity so that liquid metal can rise from the casting cavity into the feeder cavity.
  • the shaped body is placed on the feed element so that the shaped body and the feed element are designed to be displaceable relative to one another in the longitudinal direction of the feed or parallel to the feed longitudinal axis.
  • the known feeder insert Due to the telescopic displaceability of the shaped body and of the feed element to one another, it is ensured that the pressure forces acting on the mold and the associated compression of the molding material can be absorbed, which also act on the feeder. In addition, it is possible by the displaceability of the shaped body in the direction of the feed, to ensure a compression of the molding material in the approach region of the feeder to, for example, a model plate, as by the displacement of the shaped body in the direction of the mold plate, the molding material is compacted around the feed element. In order to ensure the displaceability between the molding and the feeding element, the known feeder insert has a gap between the mutually movable parts.
  • a feeder insert for a casting with a feeder head and a tube-like body is known, wherein the tube-like body, the feeder or head directly or indirectly with the casting or the Form hollow body connects and tapers towards the casting end facing and forms a breaking edge.
  • GB 2 260 285 A discloses a riser sleeve having a breaker core, the riser sleeve having a V-shaped portion and an opening at the bottom thereof.
  • the breaker core has a central opening and is arranged on the underside of the riser sleeve.
  • the inner diameter of the central opening of the breaker core is substantially the same as the inner diameter of the opening in the bottom of the riser sleeve.
  • the outer diameter of the breaker core is substantially equal to or larger than the outer diameter of the underside of the riser sleeve.
  • a feeder element for use in metal casting, the feeder element having a first end for attachment to a mold model, an opposed second end for receiving a molded article, and a bore between the first and second ends formed by a stepped sidewall ,
  • the feeder element is compressible in use, thereby reducing the distance between the first end and the second end so that the step-shaped sidewall has a first sidewall portion that forms the second end of the feeder element and, in use, a mounting surface for the molded article.
  • the first side wall portion is inclined with respect to the axis of the bore at an angle of less than 90 °.
  • the stepped sidewall has a second sidewall portion adjacent to the first sidewall portion and parallel to the axis of the bore or oblique to the axis of the bore at a different angle to the first sidewall portion, thereby forming a shoulder in the sidewall.
  • WO 2005/095 020 A2 discloses an insert for insertion into a casting cavity mold having a casting cavity extending body along a body longitudinal axis extending, a body cavity having body, said body of at least a first molded body having a connection opening, through which the body cavity is connectable to the casting cavity, and a second shaped body is formed, which is placed on the feed element.
  • the first shaped body is designed as an energy absorption device.
  • a feeder insert for insertion into a mold used in the casting of metals, comprising a molded body comprising a feeder volume of an exothermic and / or insulating material, at the lower bottom surface facing the casting to be formed by the casting a metal foot attached.
  • the metal foot has a contour projecting from the bottom surface of the molded body to the mold surface and a feed opening provided for forming a predetermined breaking point for a feeder remainder forming in the feeder volume.
  • the feeder insert is attachable with its metal base during manufacture of the mold on a holding mandrel attached to the model forming the casting mold, wherein the metal base has a conically tapered shape from the bottom surface of the molded body to the mold surface as a whole such that when the mold is finished the feeder opening forming lower end portion of the metal base terminates on the mold surface.
  • the surrounding the retaining mandrel, conical lateral surface of the metal base has at least one predetermined bending point.
  • the invention is therefore an object of the invention to provide a feeder insert that withstands high compression pressures in the manufacture of the mold and the use of which, moreover, the risk of penetration of molding material or feeder material is reduced in the casting cavity.
  • the invention solves the underlying task in a feeder insert of the type mentioned in that the feed has a deformation region, which is adapted, in at least a first phase of a relative movement of the shaped body in feeder longitudinal and (at the same time) in the direction of the feed at least in sections.
  • the invention thus relates to a feeder insert for use in casting metals in molds, comprising a shaped body and a feed member defining the feeder cavity for receiving liquid metal, the feed member having a passageway for the liquid metal, and wherein the shaped body in feeder Longitudinal direction relative to at least a portion of the feed element is movable, wherein the feed element has a deformation region which is adapted, in at least a first phase of a relative movement of the shaped body in the feeder longitudinal and in the direction of the feed element (ie in a relative movement in the direction the feeding element and at the same time in the feeder longitudinal direction) at least partially constructivestülpen.
  • Such a feed element thus inverts when relative movement of the shaped body in the feeder longitudinal direction and in the direction of the feed element is carried out;
  • An insertion direction is not fixed in the context of the present invention, but usually and preferably, the feed element is designed so that it inverts in the direction of the feeder cavity during said relative movement.
  • the invention is based on the finding that it dispenses with an embodiment with a telescoping mold body which can be pushed telescopically over the feed element and that the object according to the invention can be achieved if a feed element is provided which has an insertable deformation region.
  • a deformation region designed according to the invention is preferably invaginated along a predetermined section, preferably in the direction of the feeder cavity, wherein the compression forces acting on the feeder insert due to the compression of the material can advantageously be compensated or absorbed by a compensating movement of the deformation zone. This reduces the risk of breakage or other damage to the feeder inserts even if handled improperly.
  • the deformation region is preferably set up in the direction of the interior of the molded body.
  • the invention also relates to a feeder insert for use in casting metals in molds, comprising a shaped body and a feed element, which delimit the feeder cavity for receiving liquid metal, wherein the feed element has a passage opening for the liquid metal, and wherein the shaped body in Suiter longitudinal direction relative to at least a portion of the feed element is movable, wherein the feed element has a deformation region which is adapted to at least partially stowed in at least a first phase of a relative movement of the shaped body in the feeder longitudinal and in the direction of the feed element, and optionally in the direction of the interior of the shaped body, whereby by moving the shaped body in the longitudinal direction of the feeder relative to at least one section of the feed element it is achieved that at least a portion of the deformation area of the feed element it protrudes at least over a predetermined distance in a corresponding to the feed element region of the shaped body for the liquid metal.
  • the deformation region of the feed element is vorzugswseise set up in the direction of the shaped body (at least substantially) suprastülpen free of dead space; this means that after being inverted, no parts of the (invaginated) supply element prevent liquid metal from flowing out of the feeder cavity in such a way that they form a dead space within the cavity.
  • no parts of the (invaginated) supply element prevent liquid metal from flowing out of the feeder cavity in such a way that they form a dead space within the cavity.
  • it is thus ensured that liquid metal entering the feeder cavity is not retained by parts or sections of the deformed or inverted deformation region in the feeder cavity during the solidification of the casting.
  • the sleeve-like deformation region of the feed element design such that it has a much smaller cross-section compared to the free cross-section of the feeder cavity.
  • the invaginated portions of material project or protrude freely into the feeder lumen (i.e., the invaginated portions of material do not contact the inner wall of the feeder lumen).
  • a feeder insert according to the invention is preferred in which the invaginated section of the deformation area is formed adjacent to a wall area of the shaped body.
  • the invention also relates to a feeder insert for use in casting metals in molds, comprising a shaped body and a feed member defining the feeder cavity for receiving liquid metal, wherein the feed member has a passageway for the liquid metal, and wherein the shaped body in Suiter longitudinal direction relative to at least a portion of the feed element is movable, wherein the feed element has a deformation region which is adapted to at least partially stowed in at least a first phase of a relative movement of the shaped body in the feeder longitudinal and in the direction of the feed element, wherein the invaginated portion of the deformation region is formed adjacent to a wall portion of the molded body.
  • Such a preferred feeder insert preferably comprises further features, which are referred to above or below as being preferred.
  • the deformation range of a feed element of a feeder insert according to the invention is designed so that after the invagination at least one wall part of the invaginated portion of the deformation region rests against a wall region of the shaped body. It is thereby achieved that via the passage opening of the feed element in the feeder insert rising liquid metal can not penetrate between the inner wall of the shaped body and the wall part of the invaginated portion supporting it. Thus, an additional sealing function is provided by the bulging in the direction of the interior of the molding deformation region.
  • the supporting of the portion of the feed element which is inverted into the feeder cavity of the shaped body has the advantage that during the relative movement of the molded body to the feed element is a guide of the deformation region, which ensures a preferably concentric alignment of the molded body and feeding.
  • a lateral or one-sided buckling of the feed element or an oblique running of the feed element during the compression movement (ie the said relative movement) of the feed insert according to the invention is accordingly avoided.
  • the invention accordingly also relates to a feeder sleeve for use in casting metals in molds, comprising a shaped body and a feed member defining the feeder cavity for receiving liquid metal, the feeder member having a liquid metal flow passage, and wherein the molded body is in Suiter longitudinal direction relative to at least a portion of the feed element is movable, wherein the feed element has a deformation region which is adapted to at least partially stowed in at least a first phase of a relative movement of the shaped body in the feeder longitudinal and in the direction of the feed element, wherein the Deformation of the feed element is preferably designed so that after the invagination at least a wall part of the invaginated portion of the deformation region abuts a wall portion of the shaped body.
  • the deformation region is adapted to buckling during a first phase following the second phase of the compression movement, ie, the relative movement between the molding and the feed preferably fully along a portion.
  • the deformation region is preferably designed such that the buckling of the section or the formation of the generated buckling region takes place in a section of the deformation region, which is closer to the passage opening of the feed element than the section (in the first phase of the relative movement).
  • the Einknickvorgang has with appropriate design of the deformation region and the Suiter-shaped body no effect on the portion of the deformation region, which has already created in the first phase of the relative movement between the molding and the feed element to the inner wall of the molding.
  • the invaginated portion and the bending region of the deformation region form after completion of relative movement preferably adjacent cone-shaped or cylindrical lateral surfaces.
  • the linguistic subdivision of the relative movement into a "first" and a "second" phase does not mean that the compression movement of the feeder insert is interrupted in practice. Rather, the compression movement runs in practice at least almost without a time interruption.
  • a feeder insert according to the invention.
  • the buckling of a portion of the deformation region in a second (compression) phase is optional:
  • Such a preferred feeder insert preferably comprises further features, which are referred to above or below as being preferred.
  • the feed element is connected to the shaped body of a feeder insert according to the invention via a coupling region which ensures a stable bond between the feed element and the molded article during the insertion process.
  • a coupling region which ensures a stable bond between the feed element and the molded article during the insertion process.
  • a secure connection between the molded body and the feeding element is ensured, which advantageously prevents the feeding element from escaping during the relative movement and thus unintentionally interrupting or misdirecting the process of invagination of the deformation region in a section of the molded body.
  • the feeding element preferably has a supporting region engaging the shaped body for forming a coupling region between the feeding element and the shaped body.
  • the formation of a support region which is preferably brought into positive contact with the molded body, represents a structurally simple way to form a coupling region between the molded body and the feed element.
  • the supporting on the shaped body support portion of the feed forms an acting against the relative movement of the molding abutment, the at the compression movement of the feeder insert according to the invention in the direction of, for example, a mold plate of the mold is moved.
  • the support region is directly connected to the deformation region of the feed element, whereby an advantageous solid and secure connection between the two sections of the feed element is effected.
  • the feeder insert has a feeder longitudinal axis, wherein the support region of the feed element is a collar which is in contact with the underside of the shaped body and extends essentially radially to the feeder longitudinal axis.
  • the support region of the feed element is a collar which is in contact with the underside of the shaped body and extends essentially radially to the feeder longitudinal axis.
  • the collar resting against the underside of the molded body preferably has a corresponding lateral projection of at least 4 mm (preferably at least 11 mm, more preferably at least 15 mm) and preferably a material thickness in the range from 0.2 mm to 0.8 mm, preferably approx. 0.5 mm.
  • Such a preferred feeder insert preferably comprises further features, which are referred to above or below as being preferred.
  • the deformation region of the feed element of a feeder insert according to the invention preferably has a cylindrical sleeve or is formed from a cylindrical sleeve which (before the relative movement) has an outwardly projecting, bead-like depression in the transition to the support region.
  • the deformation region of the feed element according to the invention undergoes a desired forming movement during the upsetting, which is positioned during the insertion in, for example, a correspondingly stable section of the delivery element itself or along a section of the shaped article.
  • the bead-like depression at the upper end of the deformation region of the feed element preferably has a width in the range of 3 to 5 mm, preferably about 3 mm, and a depth in the range of 2 to 8 mm, preferably about 4 mm.
  • a rounded or curved transition having a radius between 1 and 2 mm is provided in the transition region between the cylindrical sleeve of the deformation region extending in the longitudinal direction of the feeder and a ring section extending radially at the upper end of the sleeve, which forms the base of the bead-like depression ,
  • the feed element has a tapered below the deformation region neck region, which has the advantage that the feeder insert according to the invention has a comparatively small footprint or approach surface on a model plate of a mold.
  • the feed element tapers to less than half of the sleeve cross-section of the deformation region, whereby an effective Dichtspeisung can be implemented even at relatively small castings.
  • a conically tapered neck region also has the advantage that the neck region has an optimum dimensional stability or rigidity with respect to the pressure load resulting from the compression and the associated relative movement of the molded body.
  • the cone-shaped neck region also advantageously the height of the deformation region of the feed is limited, whereby always a sufficient force on the neck region for a sealing contact with the mold is guaranteed.
  • Such a preferred feeder insert preferably comprises further features, which are referred to above or below as being preferred.
  • the attachment region is preferably equipped with a break edge, which is preferably part of a breaker core.
  • a break edge which is preferably part of a breaker core.
  • the attachment region of the delivery element extends in the direction of extent (from shoulder surface to cylindrical sleeve), so that the resistance or rigidity with respect to the pressure forces acting on the attachment region is advantageously increased. This minimizes the risk that the attachment area undergoes plastic deformation during the compression process of the mold material for the mold.
  • a plurality of beads are distributed uniformly over the circumference of the cone-shaped tapered neck region.
  • the attachment region preferably has at least four beads which preferably extend over its entire length (from the contact surface to the cylindrical sleeve).
  • Such a preferred feeder insert preferably comprises further features, which are referred to above or below as being preferred.
  • the shaped body and / or the feed element have guide surfaces for guiding a centering core;
  • the feeder insert according to the invention is designed as a self-centering feeder insert.
  • a centering core also referred to as a centering mandrel, is always advantageous if a targeted alignment of the feeder insert to the model plate of a casting mold is necessary.
  • the use of a centering core and the design of the feeder insert as a self-centering feeder simplifies its handling in an advantageous manner.
  • An inventive andszentrierend ausgestalteter feeder insert preferably has in its tapered shoulder portion parallel to the feeder longitudinal axis extending guide surfaces and the molding in an upper, horizontally extending wall portion coaxial with the feeder longitudinal axis arranged centering for an upper end portion of the centering, preferably a centering on ,
  • An advantageous embodiment of the feeder insert according to the invention provides that the material for the feed element is formed from a metallic material or comprises such a material.
  • the use of a preferably metallic material for the material used for the design of the feed element has due to the advantageous properties in terms of temperature resistance with respect to the liquid metal rising above it and its deformability of the deformation region Proven in terms of thus implementing Einstülpvorganges.
  • the feed element is set up such that the plastic deformation can be converted over the deformation area without structurally weakening material sections of the deformation area. This is advantageously prevented material fracture.
  • a cold-rolled forming steel is used as an exemplary option for forming the feed element.
  • the material for the shaped body is an exothermic and / or insulating properties exhibiting material or comprises such a material.
  • the material used which has both exothermic and insulating properties, is achieved in an advantageous manner that the ascending into the feeder cavity liquid metal is maintained for a sufficiently long period in the liquid state.
  • the design of the outer and inner contour of the molding and its wall thickness, is preferably adapted to the size of the casting and thus on the casting volume and the resulting retention times for the liquid to be held metal or adjusted.
  • the shaped body preferably ignites automatically after the inflow of the liquid metal into the feeder cavity.
  • a further aspect of the invention relates to a mold for which independent protection is requested, with a feeder insert, which according to the invention is designed according to one of claims 1 to 10.
  • Equipping a casting mold with at least one feeder insert designed in accordance with the invention enables a simplified compaction of the molding material which, among other things, also surrounds the feeder insert.
  • the feeder insert according to the invention ensures an advantageous compression movement during the compression of the molding material, so that even relatively high compression pressures are easily generated on the casting mold.
  • the risk of the penetration of molding material and / or abrasive material into the mold is advantageously reduced with the deformation region on the feed element according to the invention. This also has an advantageous effect on the reliability and productivity of the manufacturing process.
  • Another aspect of the invention relates to a method of disposing a feeder sleeve in a mold, comprising the following steps; Providing a feeder sleeve according to any one of claims 1 to 10, arranging the feeder sleeve in a molding machine so that the molded body and the feeder element are in an arrangement out of which the molded body is movable relative to at least a portion of the feeder element; Forming machine, so that the outer wall of the feeder insert is brought into contact with the molding material, and compacting the molding sand, so that the shaped body is displaced relative to the feed element and at least a portion of the deformation region of the feed element is inverted.
  • the forming machine used in connection with the method according to the invention preferably comprises a model plate (ie a pattern device for molding machines, usually consisting of a flat plate with cast-in or mechanically fastened models).
  • the feed element is preferably arranged so that it is in direct contact with the surface of the pattern plate before the compression process of the molding material. Direct contact with the model plate is particularly advantageous if in the feed element a breaking edge is integrated, which is preferably part of a refractive core.
  • the feeder sleeve is used in conjunction with a centering mandrel that simplifies alignment of the feeder sleeve with the model plate, but still maintains the feeding element in direct contact with the surface of the pattern plate.
  • a further alternative embodiment of the invention provides for the use of a centering core, which is designed so that only the centering core is preferably in direct contact with the model plate after inserting the feeder insert into the molding machine.
  • the feeder insert itself is then directly in contact with the centering core.
  • the centering core (centering mandrel) preferably includes a centering ring with which the approach region of the feed element is kept at a distance from the surface of the model plate, so that a gap is created between the attachment region of the feeder insert and the model plate.
  • the gap is preferably less than 1 mm, preferably less than 0.5 mm, particularly preferably less than 0.3 mm.
  • a preferred embodiment of the method according to the invention is characterized in that a portion of the deformation region of the feed element in the direction of the interior of the shaped body (ie in the direction of the feeder cavity) is invaginated, when the shaped body is moved in the feeder longitudinal direction to the feed element, preferably is pushed over the feed element.
  • the invagination of the deformation region into at least a portion of the feeder cavity has the advantage that the shaped body is moved almost completely over the feed element.
  • the molding may optionally be brought into direct contact with the mold plate of the casting mold.
  • a preferred feed element according to the invention is formed in one piece and comprises a tubular body which defines a passage region for the liquid metal.
  • the feed element has a first and a second end region, which are spaced apart, wherein the first end region of the feed element is placed with its approach region on a mold plate, also referred to as a mold model.
  • the second end portion facing the molded body expands outward compared with the first end portion of the feeding member.
  • a support region preferably designed as a collar
  • the support region supports the molded body in use, wherein the support region, which is preferably designed as a peripheral collar, runs perpendicular to the feeder longitudinal axis of the feeder insert in one embodiment.
  • the support region designed as a collar is inclined in such a way to the longitudinal axis of the feeder that the angle between the collar and the feeder longitudinal axis is not equal to 90 °.
  • a bead-like depression arranged on the second end region of a preferred feed element is preferably formed in that the tubular body initially widens radially outward and is then bent over again in the direction of the first end region.
  • the bead-like depression has a U-shape, whereby two approximately mutually parallel wall sections are formed on the bead-like depression.
  • a uniform (almost symmetrical) gentle compression of the feed element is effected during the relative movement of the feed element and the molded body relative to each other. Due to the preferably mutually parallel wall sections, the bead-like recess has an inner and an outer diameter.
  • the distance between the mutually parallel wall regions determines the width dimension of the bead-like depression, which preferably has a width of at least 3 to 10% of the maximum diameter of the feed element, based on the maximum diameter of the feed element.
  • the width of the bead-like depression is preferably less than 20, 15 or 10% of the maximum diameter of the delivery member compared to the maximum diameter of the delivery member.
  • the height of a bead-like depression arranged on a preferred feed element (measured in the direction of the longitudinal axis of the feeder) has a height in the range between 3 and 20% compared to the total height of the feed element, in particular before the compression of the feed element.
  • a compression of the feed element takes place, which has the consequence that the total height of the feed element is reduced and the height of the bead-like depression in the deformation region of the feed element increases significantly in at least a first phase of the relative movement between the molded article and the feed element.
  • the height of the bead-like depression has a ratio in the range between 0.5 and 0.9 compared to the total height of the delivery member after a first phase of the upset of the delivery member.
  • a force in the range of at least 2 to 4.5 kN is preferably on the support region of the feed element, a force in the range of at least 2 to 4.5 kN.
  • a preferred feed element according to the invention preferably has a material thickness at its tubular body between 0.1 and 1.5 mm, preferably between 0.3 and 0.9 mm and particularly preferably between 0.4 and 0.6 mm.
  • This embodiment of the invention can be combined with other aspects of the present invention in each case; with regard to preferred combinations, the statements made at the corresponding passages apply mutatis mutandis.
  • the initial crushing strength of a preferred feed element is at most 7000 N, 5000 N or 3000 N.
  • the initial crush strength of the feed element should be at least in a range between 250 N and 1000 N to prevent inadvertent compression of the feed element during its handling for assembly on the molded article or during storage and transportation.
  • the insertion resistance of the deformation region on a feed element according to the invention which counteracts the force necessary to irreversibly and completely fill in the deformation region after the initial crush strength of the feed element has been overcome, is preferably in a range between at most 4000 N and 9000 N. avoided that it comes to an unwanted break on a molding.
  • the insertion resistance of the deformation region is at least 750 N.
  • Such a preferred feeder insert preferably comprises further features, which are referred to above or below as being preferred
  • a preferred feed element is made of a variety of suitable materials, such as metallic materials such as steel, aluminum, aluminum alloys, brass, copper or the like, or non-metallic materials such as plastic. In particular, depending on the material used then derives the initial compression strength and the Eineurpfestmaschine of the feed element used in each case.
  • a molded article used in conjunction with a feed element to be used according to the invention preferably has a crush strength of at least 5 kN, 8 kN, 12 kN, 15 kN, 20 kN or 25 kN, depending on the initial crush strength and insertion resistance of the feed element.
  • its crushing strength is preferably less than 25 kN, 20 kN, 18 kN, 15 kN, 10 kN or 8 kN.
  • the strength of the shaped body is dependent, in particular, on the composition of the constituents used to produce the shaped body, the constituent binder and the production process for the shaped body.
  • the size and shape of the shaped body preferably also have an influence on its compression strength.
  • the above-described embodiments of the feed element and the shaped body can each be combined with the other sub-aspects of the present invention. With regard to preferred combinations, what has been said at the corresponding text passages applies correspondingly.
  • the tubular body of a preferred feed element wherein a portion of the tubular body is formed as a deformation region, has a circular cross-section.
  • the cross section of the tubular body is not necessarily circular, but could also z. B. oval, rounded or elliptical.
  • the tubular body narrows (tapers) toward the first end region. A narrow section adjacent to the casting is known as the neck of the feeder and allows for a better "chopping" of the feeder after casting.
  • the angle of the tapered neck with respect to the longitudinal axis of the feeder should be less than 45 °.
  • FIG. 1 an inventive feeder insert 2 is shown in its output arrangement.
  • the feeder insert 2 has a feed element 4 and a shaped body 6.
  • the feed element and the molded body 6 are formed as substantially rotationally symmetrical molded parts.
  • the axis of rotation extending in the feeder longitudinal direction of the feeder insert 2 (feeder longitudinal axis) is indicated by a dashed line 8.
  • the molded body 6 has an outer contour which widens conically upwards from the underside 12 of the molded body in a lower section. In a middle part 14, which extends over more than half the total height of the shaped body 6, the shaped body 6 has only a slightly conically widening outer contour.
  • the feeder cavity defining inner contour of the molded body 6 has a slightly tapered from the bottom 12 upwardly tapered inner wall 18 which in the upper Section of the shaped body 6 merges into a more funnel-shaped narrowing wall portion 19, which is a guide surface for a (in Fig. FIG. 1 not shown) centering or centering mandrel represents.
  • the upper end of the feeder cavity 10 is formed by a cylindrically shaped centering recess 20 for receiving the tip of a centering or centering mandrel.
  • FIG. 2 shows a detailed view of the feed element 4, which has a cylindrically shaped, sleeve-like deformation region 22 and a tapered at the deformation region in the direction of a model plate 30 shown approach area 24.
  • the neck region has a passage opening 26.
  • a circumferential bead-like depression 32 is provided at the upper end of the deformation region on which a support region 34 extending in the radial direction to the longitudinal axis of the feeder 8 is arranged laterally, which is designed, for example, as a collar in contact with the underside 12 of the molded body 6.
  • FIG. 3 the feeder insert 2 according to the invention is shown during a first phase of a relative movement between the feed element 4 and the molded body 6. Due to a preceding displacement of the shaped body 6, the upper region of the deformation region in the illustration according to FIG. 3 already partially in the direction of the Suiter cavity 10 invaginated. The invaginated portion (Einülpabites) 36 abuts against the inner wall 18 of the shaped body 6. FIG. 3 shows that the support member 34 by the forces acting on it rejects partially, which are caused by the movement of the molding 6; This prevents a material breakage.
  • FIG. 4 the feeding element designed according to the invention is shown after a complete compression movement, ie maximum relative movement between the shaped body 6 and the feeding element 4.
  • a kink region 38 has also formed. Waiving a kink area has in a non-illustrated alternative embodiment of the invention, the feeding after a complete compression movement only a Einstülpabêt, (depending on the dimensions of the feed and the dimensions of the cavity in the molding) directly to the inner wall of the molding. 6 applies or at a distance from the inner wall 18 (ie without direct contact with the inner wall) into the feeder cavity 10 extends.
  • FIG. 5 shows the feed element in a single view and illustrates its structural design.
  • the feed element 4 is rotationally symmetrical and preferably made in one piece from a metallic material, for example a soft steel, which is suitable for cold forming.
  • the feed element forms a lower part of the feeder insert 2 according to the invention, which has a material thickness of approximately 0.5 mm after its shaping, which preferably takes place by means of deep drawing.
  • the feed element 4 is formed from the conically extending projection region 24, the cylindrically shaped deformation region 22, the bead-like depression 32 and the support region 34.
  • the bead-like depression 32 which connects the deformation region 22 with the support region 34, forms the region at which the insertion process starts when the upsetting movement of the feeder insert 2 according to the invention occurs.
  • FIG. 6 an alternative trained feed element 4 'is shown, which in contrast to the in FIG. 2 shown embodiment on its conical or funnel-shaped extending surface 40 'in the extension direction of the neck region 24' a plurality of beads 42, 42 'has. Over the beads 42, 42 'is an increased strength or deformation stiffness of the neck portion 24' of the feed element 4 'causes.
  • FIG. 7 shows a partial view of the feeder insert 2 according to the invention, which is arranged and aligned by means of a specifically designed centering (centering) 44 on the model plate 30 to the centering 44 includes a (standing in contact with the model plate 30) centering ring 46, based on the Suiterlteilsachse 8, cone-shaped in the direction of the model plate 30.
  • the centering ring 46 forms, as FIG. 8 illustrates a foot for the réelleschiebenden approach area 24 of the feed element 4. Due to the cone shape of the centering ring 46 also an automatic centering of the feeder insert 2 is effected relative to the centering core 44.
  • the centering ring 46 with respect to its dimensions to the dimensions of the neck region 24, preferably the passage opening 26 (FIG. Fig. 2 ), such that the lug portion 24 of the feed element 4 is seated on the cone-shaped centering ring 46 and thereby kept at a distance from the surface of the model plate 30.
  • a gap 48 between the neck portion 24 of the feeder sleeve and the model plate is generated, see. again FIG. 8 , The gap is preferably less than 0.3 mm.
  • identical components are designated by the same reference numerals.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Claims (15)

  1. Insert de dispositif d'alimentation utilisé pour la coulée de métaux dans des moules, l'insert comportant un corps moulé (6) et un élément d'amenée (4) qui délimitent la cavité du dispositif d'alimentation (10) recevant le métal liquide, l'élément d'amenée (4) présentant une ouverture de passage (26) pour le métal liquide et le corps moulé (6) étant mobile dans le sens de la longueur du dispositif d'alimentation par rapport à au moins une pièce de l'élément d'amenée (4), caractérisé en ce que l'élément d'amenée (4) présente une zone de déformation (22) qui est conçue pour se retourner au moins par segments vers l'intérieur dans le sens de la longueur du dispositif d'alimentation et en direction de l'élément d'amenée (4) au cours d'au moins une première phase d'un mouvement relatif du corps moulé (6).
  2. Insert de dispositif d'alimentation suivant la revendication 1, caractérisé en ce que la zone de déformation (22) est conçue pour se retourner sans espace mort vers l'intérieur en direction de l'espace intérieur du corps moulé (6), de préférence en direction du corps moulé (6).
  3. Insert de dispositif d'alimentation suivant une des revendications 1 et 2, caractérisé en ce que le déplacement du corps moulé (6) dans le sens de la longueur du dispositif d'alimentation par rapport à au moins une pièce de l'élément d'amenée (4) permet d'obtenir qu'au moins un segment (36) de la zone de déformation (22) de l'élément d'amenée (4) fait saillie, d'au moins une longueur de trajet prédéterminée, dans une zone correspondant à l'élément d'amenée du corps moulé (6) pour le métal liquide, la zone de déformation (22) de l'élément d'amenée (4) étant, de préférence, conformée ou conçue de sorte à présenter, après au moins une première phase de mouvement relatif entre le corps moulé (6) et l'élément d'amenée (4), deux segments de paroi s'étendant à peu près parallèlement dans le sens de la longueur du dispositif d'alimentation.
  4. Insert de dispositif d'alimentation suivant une des revendications 1 à 3, caractérisé en ce que le segment retourné vers l'intérieur (36) de la zone de déformation (22) est conçu pour être en appui contre une zone de paroi du corps moulé (6), et/ou qu'une partie de paroi du segment retourné vers l'intérieur (36) de la zone de déformation (22) est conformée de sorte à s'appuyer sur une paroi interne du corps moulé (6).
  5. Insert de dispositif d'alimentation suivant une des revendications 1 à 4, caractérisé en ce que la zone de déformation (22) est conçue pour former un coude le long d'une portion au cours d'une seconde phase succédant à la première phase du mouvement relatif entre le corps moulé (6) et l'élément d'amenée (4).
  6. Insert de dispositif d'alimentation suivant une des revendications 1 à 5, caractérisé en ce que l'élément d'amenée (4) est relié au corps moulé (6) via une zone de couplage qui assure une liaison stable entre l'élément d'amenée (4) et le corps moulé (6) pendant le processus de retournement vers l'intérieur, l'élément d'amenée présentant, de préférence, une zone d'appui (34) disposée en contact du corps moulé (6) pour la formation d'une zone de couplage entre l'élément d'amenée (4) et le corps moulé (6).
  7. Insert de dispositif d'alimentation suivant la revendication 6, caractérisé en ce que l'insert de dispositif d'alimentation (2) présente un axe longitudinal du dispositif d'alimentation (8), la zone d'appui (34) étant un collier qui est en contact avec la face inférieure (12) du corps moulé (6) et s'étend radialement par rapport à l'axe longitudinal du dispositif d'alimentation, et/ou en ce que la zone de déformation (22) présente, un manchon cylindrique comportant, préalablement au mouvement relatif en transition vers la zone d'appui (34), une cavité (32) sous la forme d'un bourrelet retourné.
  8. Insert de dispositif d'alimentation suivant une des revendications 1 à 7, caractérisé en ce que l'élément d'amenée (4) présente, au-dessous de la zone de déformation (22), une zone d'épaulement (24) s'amincissant coniquement, la zone d'épaulement (24) étant, de préférence, équipée d'une ligne de rupture.
  9. Insert de dispositif d'alimentation suivant une des revendications précédentes 1 à 7, caractérisé en ce que la zone d'épaulement (24') de l'élément d'amenée (4') présente des bourrelets (42, 42') s'étendant dans la direction d'extension et/ou en ce que le corps moulé (6) et/ou l'élément d'amenée (4) présentent des surfaces de guidage pour le guidage d'un noyau de centrage (44).
  10. Insert de dispositif d'alimentation suivant une des revendications 1 à 9, caractérisé en ce que le matériau de l'élément d'amenée (4) est un matériau métallique ou comprend un matériau métallique et/ou en ce que le matériau du corps moulé (6) est un matériau présentant des propriétés exothermes et/ou isolantes.
  11. Moule avec un insert de dispositif d'alimentation (2) suivant une des revendications 1 à 10.
  12. Procédé de disposition d'un insert de dispositif d'alimentation (2) dans un moule, le procédé comportant les étapes suivantes :
    - Mise à disposition d'un insert de dispositif d'alimentation suivant une des revendications 1 à 10,
    - Disposition de l'insert de dispositif d'alimentation (2) dans une machine de moulage de sorte que le corps de moulage (6) et l'élément d'amenée (4) soient présents dans un agencement, à partir duquel le corps moulé (6) est mobile par rapport à au moins une pièce de l'élément d'amenée (4),
    - Remplissage de la machine de moulage d'une matière de moulage de sorte que la paroi externe de l'insert de dispositif d'alimentation (2) soit mise en contact avec la matière de moulage,
    - Compactage du sable de moulage de sorte que le corps de moulage (6) soit déplacé par rapport à l'élément d'amenée (4) et qu'un segment de la zone de déformation (22) de l'élément d'amenée (4) soit retourné vers l'intérieur.
  13. Procédé suivant une des revendications 12 et 13, dans lequel un segment de la zone de déformation (22) est retourné vers l'intérieur, en direction de l'espace intérieur du corps moulé (6), lorsque celui-ci est déplacé le long de l'axe longitudinal du dispositif d'alimentation en direction de l'élément d'amenée (4).
  14. Procédé suivant une des revendications 12, dans lequel un segment de la zone de déformation (22) est retourné vers l'intérieur dans au moins un segment de la cavité du dispositif d'alimentation du corps moulé (6), lorsque le corps moulé (6) est déplacé le long de l'axe longitudinal du dispositif d'alimentation en direction de l'élément d'amenée (4).
  15. Procédé suivant une des revendications 12 à 14, dans lequel la machine de moulage présente une plaque modèle (30) et l'élément d'amenée (4) est inséré dans la machine de moulage de sorte qu'il soit mis en contact immédiat avec la plaque modèle (30) et/ou avec un noyau de centrage (44).
EP14700282.8A 2013-02-15 2014-01-10 Insert de dispositif d'alimentation et procédé permettant d'agencer ledit insert dans un moule Active EP2956256B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL14700282T PL2956256T3 (pl) 2013-02-15 2014-01-10 Wkład zasilający i sposób jego usytuowania w formie odlewniczej
SI201430755T SI2956256T1 (en) 2013-02-15 2014-01-10 An adapter and a procedure for its distribution in the form

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE202013001418 2013-02-15
DE201320001933 DE202013001933U1 (de) 2013-02-15 2013-03-01 Speisereinsatz
DE202013001932 2013-03-01
PCT/EP2014/050346 WO2014124766A1 (fr) 2013-02-15 2014-01-10 Insert de dispositif d'alimentation et procédé permettant d'agencer ledit insert dans un moule

Publications (2)

Publication Number Publication Date
EP2956256A1 EP2956256A1 (fr) 2015-12-23
EP2956256B1 true EP2956256B1 (fr) 2018-03-14

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Application Number Title Priority Date Filing Date
EP14700282.8A Active EP2956256B1 (fr) 2013-02-15 2014-01-10 Insert de dispositif d'alimentation et procédé permettant d'agencer ledit insert dans un moule

Country Status (9)

Country Link
US (1) US9987676B2 (fr)
EP (1) EP2956256B1 (fr)
CN (1) CN104994973B (fr)
ES (1) ES2669183T3 (fr)
HU (1) HUE036345T2 (fr)
PL (1) PL2956256T3 (fr)
SI (1) SI2956256T1 (fr)
TR (1) TR201806342T4 (fr)
WO (1) WO2014124766A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD872781S1 (en) * 2018-04-13 2020-01-14 Foseco International Limited Breaker core
DE102019102449A1 (de) * 2019-01-31 2020-08-06 Chemex Foundry Solutions Gmbh Einteiliger Speiserkörper zur Verwendung beim Gießen von Metallen
TR201902350A2 (tr) * 2019-02-15 2020-09-21 Ges Doekuem Ueruenleri Metalurji Imalat Insaat Sanayi Ve Ticaret Ltd Sti Teleskop besleyi̇ci̇ üreti̇m yöntemi̇ ve teleskop besleyi̇ci̇

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU654047B2 (en) 1991-10-03 1994-10-20 Masamitsu Miki Riser sleeve with neck-down core
DE10039519B4 (de) 2000-08-08 2007-05-31 Chemex Gmbh Speisereinsatz
DE20115140U1 (de) 2000-11-30 2002-01-31 Luengen Gmbh & Co Kg As Speiser mit einem rohrähnlichen Körper
DE10059481B4 (de) 2000-11-30 2012-02-23 AS Lüngen GmbH Speiser mit einem rohrähnlichen Körper
EP1732719B1 (fr) 2004-03-31 2009-07-01 AS Lüngen GmbH Masselotte a manchon deformable
DE202004009367U1 (de) 2004-06-15 2004-08-19 GTP Schäfer Gießtechnische Produkte GmbH Speiser mit verformbaren Metallfuß
GB0611430D0 (en) 2006-06-09 2006-07-19 Foseco Int Improved feeder element for metal casting
ES2509945T3 (es) * 2011-02-17 2014-10-20 Foseco International Limited Elemento alimentador
EP2792432A1 (fr) * 2013-04-16 2014-10-22 Foseco International Limited Élément d'alimentation

Also Published As

Publication number Publication date
CN104994973A (zh) 2015-10-21
CN104994973B (zh) 2017-05-03
US20160030999A1 (en) 2016-02-04
TR201806342T4 (tr) 2018-06-21
SI2956256T1 (en) 2018-08-31
HUE036345T2 (hu) 2018-07-30
US9987676B2 (en) 2018-06-05
PL2956256T3 (pl) 2018-08-31
EP2956256A1 (fr) 2015-12-23
WO2014124766A1 (fr) 2014-08-21
ES2669183T3 (es) 2018-05-24

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