WO2020156770A1 - EINTEILIGER SPEISERKÖRPER ZUR VERWENDUNG BEIM GIEßEN VON METALLEN - Google Patents
EINTEILIGER SPEISERKÖRPER ZUR VERWENDUNG BEIM GIEßEN VON METALLEN Download PDFInfo
- Publication number
- WO2020156770A1 WO2020156770A1 PCT/EP2020/050360 EP2020050360W WO2020156770A1 WO 2020156770 A1 WO2020156770 A1 WO 2020156770A1 EP 2020050360 W EP2020050360 W EP 2020050360W WO 2020156770 A1 WO2020156770 A1 WO 2020156770A1
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- WO
- WIPO (PCT)
- Prior art keywords
- feeder
- section
- feeder body
- guide part
- sliding
- Prior art date
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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
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/082—Sprues, pouring cups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/2015—Means for forcing the molten metal into the die
- B22D17/2023—Nozzles or shot sleeves
Definitions
- the invention relates to a one-piece feeder body for use as a component of a two-part or multi-part, telescopic feeder insert when casting metals, with a feeder wall that at least partially delimits a feeder cavity for receiving liquid metal, the feeder wall being a passage opening for the has liquid metal in the feeder cavity and an outer surface on which at least one outwardly projecting holding element and at least one guide part with a sliding section for a feeder element corresponding to the feeder body are arranged. Furthermore, the invention also relates to a two-part or multi-part feeder insert for use in casting metals in casting molds and a kit for producing feeder inserts.
- One-piece feeder bodies are used in a variety and variety in the casting of metals in molds. Such feeder bodies are often part of a feeder insert, also referred to as a feeder system.
- a feeder insert also referred to as a feeder system.
- Such a one-piece feeder body which forms a two-part or multi-part, telescopic feeder insert in the casting operation together with a feeder element, is surrounded on the outside at least in regions by a molding material, such as molding sand, used to produce a casting mold.
- a molding material such as molding sand
- Known one-piece feeder bodies have a feeder wall, by means of which a feeder cavity for receiving liquid metal is at least partially delimited.
- the feeder wall of the feeder body usually has an inner surface which at least partially defines the feeder cavity of the feeder insert.
- the wall of the feeder further comprises a passage opening for the liquid metal into the feeder cavity. During the casting process, a subset of the liquid metal used for casting enters it through the passage opening.
- the metal located in the feeder cavity of the feeder insert serves to make up the casting, which is kept in the liquid state for a certain period of time until the metal present in the casting mold has at least partially solidified.
- feeder inserts or feeder systems are used which can be changed in their total height when the molding material is pressed into a finished molded part.
- a feeder insert for use in the casting of metals which comprises two shaped elements which can be pushed into one another along its longitudinal axis, and which delimit the feeder cavity for receiving the liquid metal.
- a molded element is thus pushed into the other molded element or the other molded element is pushed over one molded element.
- holding elements are provided on one of the shaped elements, which are designed to carry the respective other shaped element. If the pressure when pressing the molding material exceeds a predetermined value, the holding elements on the one molded part are cut off or deformed in such a way that a relative movement between the two molded elements is possible.
- the guide part has a sliding section for a feeder element corresponding to the feeder body, along which, with compression of the molding material, in particular the inside of the feeder element slides.
- the guide part usually protrudes on the outer surface of the feeder wall, so that the inside of the feeder element is only partially supported by the feeder wall, namely via the guide part or parts.
- the guide part which extends over a section along the outer surface of the feeder body, was often at least partially broken off before the feeder body was used as intended. This has the result that the feeder element movably received in relation to the feeder body is then guided unevenly to the feeder body and there is therefore a risk of the feeder element tilting or tilting towards the feeder body.
- the invention has for its object to provide a one-piece feeder body and a feeder insert, by means of which an improved relative movement between the feeder body and the feeder element and thus an improved telescoping of the feeder insert is made possible, in particular while avoiding the disadvantages described above .
- the invention achieves the object on which it is based by a feeder body for use as a component of a two-part or multi-part, telescopic feeder insert when casting metals with the features according to claim 1.
- the guide part has a support section projecting outwards on the outer surface, which is, then extends to the sliding section of the guide part for guiding the feeder element in the direction of the passage opening.
- the invention thus relates to a one-piece feeder body which has a feeder wall which at least partially delimits a feeder cavity for holding liquid metal.
- the feeder wall comprises a passage opening for the liquid metal into the feeder cavity.
- an attachment area for attaching the feeder body to a molded model and / or a molded plate is preferably provided in the area of the passage opening of the feeder wall on the outer surface.
- the guide part also withstands the forces occurring during the telescoping of the feeder body and feeder element to one another.
- the support section preferably extends, in particular in the case of a vertical alignment of the feeder longitudinal axis of the feeder body, downward from the sliding section of the guide part and thus in the direction of the passage opening on the feeder wall.
- the support section like the guide part, protrudes on the outer surface of the feeder wall, so that the shoulder at the lower end of the sliding section of the guide part is at least reduced, preferably completely balanced.
- the sliding section has a sliding surface and the supporting section has an end surface, the sliding surface being inclined at an angle a1 to the center axis and the end surface being inclined at an angle a2 to the center axis of the passage opening, the angles in opposite directions are open.
- the sliding surface thus preferably widens in the direction of movement of the feeder element moved relative to the feeder body.
- the widening sliding surface of the guide part thus at least partially counteracts the sliding movement of the feeder element relative to the feeder body.
- the end face of the support section is inclined in the opposite direction, so that it is ensured that it does not come into contact with the inside of the feeder element.
- a plurality of guide parts are preferably arranged on the feeder body according to the invention at an angular distance from one another around the central axis of the passage opening, preferably at a uniform angular distance around the central axis of the passage opening.
- the provision of several guide parts on the wall of the feeder causes improved guidance of the feeder element movable relative to the feeder body.
- a frictional effect is distributed evenly along the circumference when the feeder body and feeder element are pushed into one another.
- the feeder body preferably has at least three, four, five or more such guide parts according to the invention on its outer surface.
- a preferred embodiment of the one-piece feeder body according to the invention provides that five guide parts are arranged on the outer surface with an angular offset of preferably approximately 72 degrees to one another.
- a preferably precise radial alignment of the longitudinal axis of the feeder element with the longitudinal axis of the feeder body is achieved.
- the feeder body according to the invention preferably has a first end defining the passage opening and a second end opposite the passage opening, the support section preferably having a step-free transition to the sliding section and / or running out in the direction of the second end of the feeder body without a step on the outer surface of the feeder wall.
- the feeder body is preferably positioned on a mold plate with its first end, at which the passage opening for the liquid metal is formed.
- the feeder body according to the invention is thus fixed during the production of the casting mold relative to the mold plate which determines at least part of the outer contour of the casting mold.
- the feeder body also has a second, preferably open end, to which the feeder element of a feeder insert, which can be moved relative to the feeder body, can be assigned.
- connection to the feeder element is preferably achieved via the open end, the feeder body and feeder element then jointly defining the feeder cavity.
- a step-free transition is formed between the support section projecting on the outside of the feeder wall and the sliding section of the guide part.
- a step-free transition between the sliding surface of the sliding section and the end surface of the supporting section on the guide part is also to be understood to mean the provision of an edge, provided that both preferably planar surfaces of the sliding section and End the support section in the transition at the same height to each other.
- the support section has a step-free transition from its end surface to the outer surface of the feeder wall adjacent at the end.
- a preferred development of the feeder body according to the invention provides that the guide part or parts has an attachment section that extends from the sliding section in the direction of the second end, preferably projecting on the outer surface.
- the attachment area is preferably formed near the second, open end of the feeder body.
- the attachment areas of the plurality of guide parts arranged distributed along the outer surface of the feeder wall preferably form an outer diameter which is smaller in its dimensions than the inner diameter on the inside of the feeder element.
- the inside diameter of the feeder element preferably has sufficient play with the outside diameter of the attachment areas of the guide parts on the feeder body according to the invention.
- the attachment section of the guide part preferably has an attachment surface which is inclined at an angle a3 to the central axis of the passage opening, which is different from the angle cd of the sliding surface of the sliding section, the angles of inclination of the attachment surface and sliding surface having the same opening direction.
- the attachment or radial alignment of a feeder element to be attached to the feeder body is further simplified with the attachment surfaces of the attachment regions which run inclined to the center axis of the passage opening. This simplifies the assembly of a feeder insert, which is composed of a feeder body and a feeder element to be joined to the feeder body.
- the inclination angle a3 of a respective attachment surface of the attachment region is preferably greater than the inclination angle cd of the sliding surface of the sliding portion of the guide part immediately adjoining the attachment portion.
- the transition area between the attachment surface and the sliding surface on the guide part is preferably also designed to be free of steps for a simplified transfer of the feeder element.
- the holding element preferably protrudes outward directly on the guide part or is arranged so as to project outward adjacent to the guide part on the outer surface. According to a preferred embodiment, the holding element holding the feeder element in the initial position relative to the feeder body is preferably formed on the guide part projecting on the outer surface of the feeder body according to the invention.
- the holding element can also be arranged separately from the guide part on the outer surface of the feeder wall.
- the holding element is preferably arranged on the sliding section of the guide part, projecting approximately radially, and the supporting section extends from the holding element in the direction of the first end of the feeder body.
- the support section also has the function of supporting the holding element on the guide part in the direction of the passage opening. This further reduces the risk of the holding element on the guide part breaking off prematurely.
- breaking out of surface areas on the sliding surface of the guide part is avoided.
- the holding element is preferably arranged on the end region of the sliding section facing the support section.
- the holding element is arranged or formed at the lower end of the sliding section of the guide part.
- the sliding section has a sliding surface which runs approximately parallel to the outer surface of the feeder wall in the direction of extension of the guide part.
- at least a portion of the feeder wall forming the feeder body also has an outer cross section that widens along the longitudinal axis of the feeder body in the direction of the passage opening.
- the longitudinal axis of the feeder body runs in particular coaxially to the central axis of the passage opening.
- a uniform gap is preferably formed between the outer surface of the feeder wall of the feeder body according to the invention and an inside of the feeder element corresponding to the feeder body.
- the guide part or parts preferably have an extension direction running approximately parallel to the central axis, the attachment section and / or the sliding section preferably having a width transverse to the direction of extension of the guide part, which widens in the direction of the first end of the feeder body.
- the width at the attachment surfaces and / or the sliding surfaces increasing in the direction of the sliding movement, the safe sliding off during the relative movement of the feeder body and feeder element, during the molding material compression during the production of the casting mold, is further improved. Tilting or tilting of a feeder element on or to the feeder body according to the invention is avoided by the surfaces that preferably widen in the direction of movement.
- the holding element is preferably arranged uniformly spaced from the side edges of the sliding surface on the guide part.
- the holding element which is preferably arranged in the center of the sliding section, has a width which is in a range from approximately one third to approximately half in relation to the width of the sliding section.
- Surface areas of the sliding surface are preferably formed on both sides of the holding element.
- the support section has a width transverse to the direction of extension of the guide part, which width decreases in the direction of the first end of the feeder body.
- the feeder wall has a sleeve section with an outer cross section widening from the second end in the direction of the first end and an attachment region adjoining the sleeve section for attachment to a molded model or a molded plate with an toward the first end tapering cross-section.
- the feeder body is divided into two functional areas. The upper functional area associated with the second end of the feeder body with its sleeve section enables the relative movement between the feeder body and the feeder element to form a telescopic feeder insert according to the invention.
- the sleeve section preferably has a height in the direction of the longitudinal axis of the feeder body which is approximately half, preferably more than half, the total height of the feeder body according to the invention. speaks.
- an attachment area is provided on the feeder body according to the invention, which is set up for attachment to a molded model or a molded plate.
- the attachment area of the feeder body according to the invention also has an outer cross section which tapers in the direction of the first end of the feeder body, starting from the sleeve section.
- the guide part according to the invention with its attachment area, its sliding section, its support section and the holding element arranged on the sliding section extends along the sleeve section from the second end of the feeder body according to the invention in the direction of the transition between the sleeve section and the attachment area of the feeder body.
- the guide part or parts preferably extend over the entire height of the sleeve section.
- the upper and lower ends of the guide section preferably each terminate with the outer circumference of the outer surface of the sleeve section. Accordingly, a step-free transition from the attachment area at the upper end to the sleeve section and from the support section at the lower end to the sleeve section is formed.
- the attachment surface on the attachment section, the sliding surface on the sliding section and the end surface on the support section have a flat configuration in the direction of extension of the guide part and transversely to the direction of extension.
- the sliding surface of the sliding section protrudes approximately 1.5 mm on the outer surface of the feeder wall forming the sleeve section.
- the attachment surface and the end surface are preferably each inclined to the sliding surface and end on the outer surface of the feeder wall.
- the holding element forms a semi-cylindrical structural part on the sliding surface, which has a radius of approximately 2 mm and a height of approximately 5 mm with a total height of the guide part of approximately 35 mm and a maximum width of the guide part at its widest point of approximately 10 mm .
- the dimensions of the guide part and the holding element are to be adapted in relation to the total height of the guide part in the direction of extension.
- the feeder body according to the invention is preferably designed to be rotationally symmetrical for use as the lower part of a feeder insert.
- a rotationally symmetrical feeder body can be arranged without any preferred direction within a mold cavity to form a casting mold.
- the feeder body according to the invention is asymmetrical.
- a feeder body of a side feeder for use is formed asymmetrically in vertically divisible molds, such a feeder body according to the invention preferably having a center of volume of the feeder cavity offset from the center axis of the passage opening.
- Such an asymmetrically designed feeder body also preferably has on its outer surface one or more guide parts according to the invention, described above, with their support sections.
- a one-piece feeder body according to the invention is preferred, the feeder body (i) being formed from exothermic feeder material or at least partially comprising exothermic feeder material and / or (ii) being formed from insulating feeder material or comprising partially isolating feeder material.
- the material in the feeder cavity is preferably kept in a liquid state for a comparatively long period of time.
- the entire one-piece feeder body is preferably formed from an exothermic feeder material.
- the feeder body according to the invention can also consist entirely or only partially of an insulating feeder material bound with binder, in particular quartz sand, with which the heat emission from the inside of the feeder body is reduced in a simple manner.
- the feeder insert comprises at least one feeder body according to the invention, which is preferably designed according to one of the preferred embodiments above, and one or more further feeder elements, the feeder body being connected to the one or the further feeder elements to form a telescopic feeder insert, and wherein the feeder body defines the feeder cavity together with the one further feeder element or together with at least one of the further feeder elements.
- the invention thus relates to a multi-part feeder insert, in which the feeder body according to the invention interacts with at least one further feeder element to form the feeder cavity, the feeder body and the at least one feeder element being designed to be telescopic relative to one another.
- the multi-part feeder insert is composed of the one-piece feeder body and the at least one feeder element.
- a two-part or multi-part feeder insert is to be understood in particular as a feeder insert composed of the one-piece feeder body according to the invention and at least one individual, further feeder element.
- the feeder body according to the invention and the at least one further feeder element can be reversibly separated from one another and joined together again as often as required before they are actually used in a casting mold.
- a multi-part feeder insert also referred to as a “telescopic feeder”
- part of the feeder insert e.g. the feeder body
- part of the feeder insert e.g. (E.g. the feeder body)
- the feed element is preferably pushed at least in sections over the feeder body, which preferably stands firmly on a mold plate or a mold model.
- a still further aspect of the present invention relates to a kit for producing feeder inserts, comprising one or more feeder bodies according to one of the preferred embodiments described above, and at least two further feeder elements which are connected to the feeder body or bodies according to the invention according to one of the preferred embodiments described above correspond in such a way that two or more different feeder inserts can be produced, the feeder cavities of which have different volumes.
- the invention is based on the additional idea of being able to assemble a single feeder body according to the invention with different feeder elements to form a feeder insert, which are designed differently.
- the one or more feeder bodies preferably each have a coupling section which is designed to be complementary or corresponding to a respective coupling region of a feeder element to be joined therewith.
- the coupling areas of the different feeder bodies or the coupling areas of the different feeder elements are preferably each designed identically.
- the coupling area on the feeder body has at least one guide part which has a support section which projects outwards on the outer surface and which, preferably adjoining the sliding section of the guide part for guiding the feeder element, extends in the direction of the passage opening
- the kit according to the invention preferably comprises a centering mandrel which corresponds to the passage opening in one feeder body or in at least one of the at least two feeder bodies according to one of the preferred embodiments described above.
- the feeder insert is preferably aligned vertically with the feeder body according to the invention and the feeder element to the mold plate or to the mold model.
- the centering mandrel preferably has a centering mandrel foot which has a shape adapted to the shape of the passage opening.
- the passage opening has a non-cylindrical cross section, but preferably has a cross section, preferably selected from the group consisting of oval, non-circular, flattened circle and polygonal, and the cross section of the centering mandrel foot is complementary to the cross section of the passage opening is at least one or more feeder bodies on the centering mandrel.
- An anti-rotation device is preferably generated between the centering mandrel and the feeder body or bodies, by means of which the feeder body can be brought into contact with one another in one or more preferred positions relative to the centering mandrel.
- the preferred embodiments or further developments described for the feeder body according to the invention are at the same time or analogously also preferred embodiments of the feeder insert according to the invention and of the kit for producing a feeder insert.
- Preferred embodiments or further developments of the feeder insert or of the kit for producing a feeder insert, which relate to the feeder body, are also preferred embodiments of the feeder body, etc.
- FIG. 1 is a perspective view of a feeder body according to the invention for use in casting metals; 2: a view of the feeder body according to the invention from FIG. 1 from below;
- 3a a sectional view or an enlarged sectional view of the feeder body according to the invention according to FIG. 1; 4: a view of a first embodiment of a feeder insert with a feeder body according to the invention;
- FIG. 5 shows a view of a further embodiment of a feeder insert with a feeder body according to FIG. 1; and FIGS. 6-9: Views which schematically illustrate the production of a casting mold from
- Fig. 1 shows a one-piece feeder body 1 according to the invention, which is used in the casting of metals in a mold, not shown.
- the feeder body 1 has a feeder wall 2 with an inner surface 4, which is set up to at least partially delimit a feeder cavity 42, 42 '(FIG. 4, FIG. 5) for holding liquid metal.
- the feeder wall 2 of the feeder body further comprises an outer surface 6, on which at least one guide part 8 is arranged for a feeder element 20, 20 '(FIG. 4, FIG. 5) corresponding to the feeder body.
- at least one holding element 10 projecting outwards is provided on the outer surface 6 and is designed to hold the feeder element 20, 20 ′ in an initial position relative to the feeder body 1.
- the feeder wall 2 has a passage opening 12 (FIG.
- the feeder body 1 has a sliding section 14 on the guide part 8 for the feeder element 20 corresponding to the feeder body, the guide part 8 also having a support section 16 projecting outward on the outer surface 6.
- the support section 16 then extends to the sliding section 14 of the guide part 8 in the direction of the passage opening 12.
- the guide part 8 has an attachment area 18 which also projects outwards on the outer surface 6 of the feeder wall 2.
- the feeder body 1 also has a first end 22 defining the passage opening 12 and a second end 24 opposite the passage opening.
- the attachment region 18 extends from the sliding section 14 of the guide part 8 in the direction of the second end 24 on the feeder body 1.
- the support section 16 and the attachment section 18 are arranged at opposite ends of the sliding section 14.
- a plurality of guide parts 8 are arranged at an angular distance from one another around the central axis 26 (FIG. 3) of the passage opening 12.
- five guide parts 8 are arranged on the outer surface 6 with an offset of preferably approximately 72 degrees to one another.
- the holding element 10 is directly on the guide part 8 from the outside. All holding elements 10 together form a receptacle for the feeder element 20 to be held in a starting position relative to the feeder body.
- FIG. 3 shows a sectional illustration of the feeder body 1 according to the invention, which has a sleeve section 28 with an outer cross section widening from the second end 24 in the direction of the first end 22. Furthermore, the feeder body 1 comprises an attachment region 30 directly adjoining the sleeve section 28 for attachment to a mold model or a mold plate 50 (FIG. 4, FIG. 5). The attachment region 30 has an outer cross section tapering from the sleeve section 28 in the direction of the first end 22. As a result, the feeder body forms a reduced contact surface on the shaped plate 50 to be brought into contact with the feeder body. 3 further shows, the guide part 8 extends along the sleeve section 28.
- the guide parts 8 extend along the entire height of the sleeve section 28 from the second end 24 of the feeder body 1 to the transition 32 between the sleeve section 28 and the Attachment area 30.
- the sliding section 14 has a sliding surface 34 and the support section 16 has an end surface 36.
- the attachment area 18 has an attachment surface 38 for attaching the feeder element 20 to the second end 24 of the feeder body 1.
- the holding element 10 is arranged on the sliding section 14 of the guide part 8 approximately radially protruding, the holding element 10 being arranged at the lower end of the sliding section 14 of the guide part 8 when the feeder body according to the invention is arranged vertically.
- the guide parts 8 have an extension direction running approximately parallel to the central axis 26 of the passage opening, the attachment section 18 and the sliding section 14 having a width transverse to the direction of extension of the guide part 8, which widens from the second end 24 in the direction of the first end 22 on the feeder body 1 .
- the support section 16 has a width transverse to the direction of extension of the guide part, which width decreases in the direction of the first end 22 of the feeder body 1.
- the inner surface 4 of the feeder wall 2 is designed such that the feeder cavity (FIG. 4, FIG.
- the inner surface 4 has a cross section that tapers in the direction of the passage opening 12. In the embodiment shown, the inner surface 4 has a conical shape in sections.
- FIG 3a shows the guide part 8 arranged in the region of the sleeve part 28 on the outer surface 6 in an enlarged illustration.
- the guide part 8 is shown with a modified hatching in relation to the remaining wall of the feeder in order to clarify its specific configuration.
- the guide part 8 and the feeder wall 2 are preferably formed in one piece, and there is no structural separation between the individual parts of the feeder body 1, as could be assumed by the different hatching.
- the sliding surface 34 of the sliding section 14 is inclined at an angle a1 to the central axis 26 of the passage opening 12 and the end surface 36 of the supporting section 16 is inclined at an angle a2 to the central axis 26 of the passage opening 12, the angles a1 and a1 are opened in opposite directions.
- the central axis 26 is shifted into the feeder wall 2 for a simplified illustration.
- the sliding surfaces 34 and the end surfaces 36 of the guide parts 8 are thus inclined in opposite directions with respect to the central axis 26 of the passage opening 12.
- the attachment surface 38 is inclined at an angle a3 to the central axis 26 of the passage opening, the angle of inclination a1 of the sliding surface 34 and the angle of inclination a3 of the attachment surface 38 having the same opening direction, but being different in relation to the central axis 26 of the passage opening 12.
- the sliding surface 34 of the sliding section 14 extends in the direction of extension of the guide part 8 in the region of the sleeve part 28 approximately parallel to the outer surface 6 of the feeder wall 2.
- the outer diameter of the outer surface 6 of the feeder wall 2 as well as the circumference defined by the sliding surfaces 34 of the guide parts 8 widens in the region of the sleeve part 28 from the second end 24 in the direction of the first end 22 of the feeder body 1. As can further be seen from FIG.
- both the support section 16 and the attachment section 18 of the guide part 8 have a step-free transition to the sliding section 14.
- the support section 14 runs in the direction of the first end 22 of the feeder body 1 without a step on the outer surface 6 of the feeder wall 2.
- the attachment section 18 also runs in the direction of the second end 24 of the feeder body 1 without a step on the outer surface 6 of the feeder wall 2.
- FIG. 4 shows a first embodiment of a first feeder insert 40 according to the invention, which is formed from the feeder body 1 and a first feeder element 20.
- the feeder body 1 and the feeder element 20 together form a feeder cavity 42 for the liquid metal entering the feeder cavity via the passage opening 12.
- the feeder body 1 and the feeder element 20 are designed in such a way that the feeder element 20 can be displaced on the outside at least in sections over the feeder body 1.
- the feeder body 1 can in particular be telescopically inserted into the feeder element 20.
- the feeder body 1 and the feeder element 20 are held in position relative to one another by means of a centering mandrel 44.
- a guide part 8 is arranged on the outer surface 6 of the feeder wall 2 of the feeder body 1, by means of which the tilting or tilting of the feeder element 20 to the feeder body 1 is avoided during the displacement movement of feeder body 1 and feeder element 20 relative to one another.
- a holding element 10 is arranged on the guide part 8, by means of which the feeder element 20 is held in an initial position before the feeder element is displaced relative to the feeder body 1.
- the feeder element 20 has at its upper end 46 a receptacle 48 for the tip of the centering mandrel 44.
- FIG. 5 shows a second embodiment of a feeder insert 40 ', which is composed of the feeder body 1 according to the invention and a further feeder element 20' corresponding to the feeder body 1.
- the feeder body 1 according to the invention can correspond to different feeder elements 20, 20 '.
- the feeder body 1 and the feeder element 20 ' act in almost identical form with one another, as described for FIG. 4.
- the feeder insert 40 ' has an enlarged feeder cavity 42' for receiving the liquid metal.
- FIG. 6 to 9 show an exemplary embodiment of a method for producing at least one shaped part of a casting mold (not shown in more detail), wherein a feeder body 1 designed according to the invention is pushed or placed with its passage opening 12 onto a centering mandrel 44.
- the centering mandrel 44 is fastened to a mold plate 50, which defines at least surface areas of the molded part not to be produced.
- the feeder body 1 comes into direct contact with the molding plate 50 via its attachment region 30.
- the lower end of the feeder element 20 is attached to the attachment section 18 of the guide part 8 and the receptacle 48 at the upper end 46 of the feeder element 20 is pushed over the tip of the centering mandrel 44 and thus the feeder element 20 with the feeder body 1 assembled into a feeder insert 42 according to the invention.
- the feeder element 20 is displaced into its starting position on the feeder body 1 until the feeder element 20 has been brought into contact with the holding elements 10 protruding radially outward on the guide parts 8.
- a molding material 52 is introduced into a mold, which is not shown in detail.
- the feeder insert 40 formed from the feeder body 1 and the feeder element 20 is completely surrounded on the outside by the molding material 52.
- the molding material 52 is pressed inside the mold, as a result of which the molding material 52 is compacted, as indicated, and a solid molding is formed.
- the feed element 20 is displaced parallel to the central axis 26 of the passage opening 12 in the direction of the mold plate 50.
- the holding elements 10 arranged on the guide parts 8 are separated from the guide part 8.
- the feeder cavity 42 of the feeder insert 40 is reduced.
- the feeder element 20 also runs on the circumference which widens in the direction of the first end 22 on the feeder body 1 and is formed by means of the sliding surfaces 34 of the sliding sections 14 of the guide part 8 (FIG. 3a).
- the one or more protruding on the outer surface 6 of the feeder wall 2 sliding portions 14 with their sliding surfaces 34 of the guide members 8 each form a kind of run-up slope for the feeder element 20 which can be pushed over the feeder body 1.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MX2021009192A MX2021009192A (es) | 2019-01-31 | 2020-01-09 | Cuerpo de bebedero de una pieza para el uso en la fundicion de metales. |
KR1020217023660A KR102680312B1 (ko) | 2019-01-31 | 2020-01-09 | 금속의 캐스팅에 사용하기 위한 일체형 피더 본체 |
JP2021543365A JP7431836B2 (ja) | 2019-01-31 | 2020-01-09 | 金属鋳造において使用するための一体型フィーダ本体 |
US17/413,805 US20220008985A1 (en) | 2019-01-31 | 2020-01-09 | Single-piece feeder body for use in metal casting |
EP20700563.8A EP3917698B1 (de) | 2019-01-31 | 2020-01-09 | Einteiliger speiserkörper zur verwendung beim giessen von metallen |
EA202191397A EA202191397A1 (ru) | 2019-01-31 | 2020-01-09 | Неразъемный корпус питателя для применения при литье металлов |
ES20700563T ES2969248T3 (es) | 2019-01-31 | 2020-01-09 | Cuerpo de mazarota de una pieza para uso en fundición de metales |
BR112021012754-2A BR112021012754A2 (pt) | 2019-01-31 | 2020-01-09 | Corpo alimentador de peça única, inserto alimentador e kit para produzir insertos alimentadores |
CN202080012011.5A CN113382813B (zh) | 2019-01-31 | 2020-01-09 | 用于在金属铸造时使用的一件式的冒口主体 |
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DE102019102449.8 | 2019-01-31 | ||
DE102019102449.8A DE102019102449A1 (de) | 2019-01-31 | 2019-01-31 | Einteiliger Speiserkörper zur Verwendung beim Gießen von Metallen |
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WO2020156770A1 true WO2020156770A1 (de) | 2020-08-06 |
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PCT/EP2020/050360 WO2020156770A1 (de) | 2019-01-31 | 2020-01-09 | EINTEILIGER SPEISERKÖRPER ZUR VERWENDUNG BEIM GIEßEN VON METALLEN |
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US (1) | US20220008985A1 (de) |
EP (1) | EP3917698B1 (de) |
JP (1) | JP7431836B2 (de) |
KR (1) | KR102680312B1 (de) |
CN (1) | CN113382813B (de) |
BR (1) | BR112021012754A2 (de) |
DE (1) | DE102019102449A1 (de) |
EA (1) | EA202191397A1 (de) |
ES (1) | ES2969248T3 (de) |
MX (1) | MX2021009192A (de) |
WO (1) | WO2020156770A1 (de) |
Cited By (1)
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WO2022117242A1 (de) * | 2020-12-04 | 2022-06-09 | Chemex Foundry Solutions Gmbh | SPEISEREINSATZ ZUR VERWENDUNG BEIM GIEßEN VON METALLEN IN GIEßFORMEN |
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DE102013102381A1 (de) | 2012-03-12 | 2013-09-12 | Actech Gmbh | Verfahren zur Positionierung und Fixierung von Formteilen in Gießformen |
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2019
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2020
- 2020-01-09 EA EA202191397A patent/EA202191397A1/ru unknown
- 2020-01-09 CN CN202080012011.5A patent/CN113382813B/zh active Active
- 2020-01-09 MX MX2021009192A patent/MX2021009192A/es unknown
- 2020-01-09 EP EP20700563.8A patent/EP3917698B1/de active Active
- 2020-01-09 WO PCT/EP2020/050360 patent/WO2020156770A1/de unknown
- 2020-01-09 JP JP2021543365A patent/JP7431836B2/ja active Active
- 2020-01-09 KR KR1020217023660A patent/KR102680312B1/ko active IP Right Grant
- 2020-01-09 US US17/413,805 patent/US20220008985A1/en active Pending
- 2020-01-09 BR BR112021012754-2A patent/BR112021012754A2/pt unknown
- 2020-01-09 ES ES20700563T patent/ES2969248T3/es active Active
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US20090014482A1 (en) | 2006-06-09 | 2009-01-15 | Trevor Leonard Tackaberry | Feeder Element for Metal Casting |
DE102006055988A1 (de) | 2006-11-24 | 2008-05-29 | Chemex Gmbh | Speisereinsatz und Speiserelement |
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Also Published As
Publication number | Publication date |
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US20220008985A1 (en) | 2022-01-13 |
JP7431836B2 (ja) | 2024-02-15 |
EP3917698B1 (de) | 2023-10-18 |
CN113382813A (zh) | 2021-09-10 |
CN113382813B (zh) | 2024-03-01 |
MX2021009192A (es) | 2021-09-08 |
EA202191397A1 (ru) | 2021-12-31 |
ES2969248T3 (es) | 2024-05-17 |
EP3917698C0 (de) | 2023-10-18 |
DE102019102449A1 (de) | 2020-08-06 |
BR112021012754A2 (pt) | 2021-09-08 |
JP2022518559A (ja) | 2022-03-15 |
KR20210122781A (ko) | 2021-10-12 |
KR102680312B1 (ko) | 2024-07-01 |
EP3917698A1 (de) | 2021-12-08 |
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