EP2483012B1 - Moule de coulée sans châssis - Google Patents

Moule de coulée sans châssis Download PDF

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Publication number
EP2483012B1
EP2483012B1 EP10759644.7A EP10759644A EP2483012B1 EP 2483012 B1 EP2483012 B1 EP 2483012B1 EP 10759644 A EP10759644 A EP 10759644A EP 2483012 B1 EP2483012 B1 EP 2483012B1
Authority
EP
European Patent Office
Prior art keywords
mold
casting
bales
mould
openings
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.)
Not-in-force
Application number
EP10759644.7A
Other languages
German (de)
English (en)
Other versions
EP2483012A1 (fr
Inventor
Jörg MEINBERG
Johann Schmitt
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.)
KSB AG
Original Assignee
KSB AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by KSB AG filed Critical KSB AG
Publication of EP2483012A1 publication Critical patent/EP2483012A1/fr
Application granted granted Critical
Publication of EP2483012B1 publication Critical patent/EP2483012B1/fr
Not-in-force 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
    • B22C23/00—Tools; Devices not mentioned before for moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C11/00—Moulding machines characterised by the relative arrangement of the parts of same
    • B22C11/10—Moulding machines characterised by the relative arrangement of the parts of same with one or more flasks forming part of the machine, from which only the sand moulds made by compacting are removed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C21/00—Flasks; Accessories therefor
    • B22C21/10—Guiding equipment
    • 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
    • B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
    • B22C7/04—Pattern plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/02—Sand moulds or like moulds for shaped castings

Definitions

  • the invention relates to a boxless, horizontally divided casting mold, with at least two molded bales formed from a molding compound which delimit a casting cavity, according to claim 1.
  • a mold that is filled with liquid casting metal and in which the casting can solidify.
  • the cavity of the mold is the negative image of the casting.
  • the supply of liquid metal into the cavity of the mold via a supply line The supply of liquid metal into the cavity of the mold via a supply line.
  • two variants of the feeding of the casting material are distinguished: In the first variant, the casting mold is cast in the rising mold, with the casting material passing through a funnel and a pouring channel into the mold to be poured out. In the second variant, the casting material is pressed into the casting mold via a riser from a crucible located below the casting mold.
  • lost molds In the production of castings, either lost molds or permanent molds can be used. Lost shapes are destroyed when the casting is removed. These forms are formed from a molding compound. They usually consist of quartz sand in combination with a binder. Permanent molds are commonly used when casting non-ferrous metals into larger ones Quantity must be produced. These molds are made of steel or cast iron or non-ferrous materials.
  • the invention relates to a lost mold.
  • Lost casting molds can be boxless or have a molding box, which consists of two mold box halves, as for example in the DE 530 510 C , of the DE 24 15 115 A1 and many others.
  • the invention is a boxless casting mold.
  • Castless casting molds are usually two-part molds. They are used without top and bottom boxes. Forming frames are used only for the production of the shaped bales and for the exact centering of the upper and lower mold bales, which are subsequently removed again before casting. For the casting, one then obtains a so-called molding block, which has the significant advantage that the very high investment costs for the molding box park are eliminated.
  • the DE 35 39 042 A1 shows such an arrangement.
  • the casting molds are generally cuboid or cube-shaped and have a molding surface or two opposing mold surfaces in which or in which the models are molded. Two molds together form a shape of the casting to be cast.
  • the closed box-casting molds are placed side by side on a casting line for the casting.
  • a pouring funnel and a pouring channel are formed in the shaped bales, so that casting can be started directly after the bales have been joined to form the casting molds.
  • the advantage of this caseless casting molds is that a molding box consisting of a lower and upper box is not required.
  • bales Before casting, the bales must be aligned with each other and permanently fixed. This alignment is very time consuming.
  • the object of the present invention is to provide a boxless casting mold, in which the orientation of the molded bale to each other can be made quickly and accurately.
  • this object is achieved in that two opposing mold bales have openings and the openings for horizontal alignment of the mold bales form a vertical guide line for a rod-like guide element.
  • the openings are preferably channels that run in the moldballs.
  • the channels may have different cross sections, with round cross sections prove to be particularly favorable.
  • the openings are integrated in areas of the molded bales where they have no connection to the casting cavity.
  • the shaped bales preferably have projections in which the openings are made. These projections are targeted material accumulations of molding material. In the material accumulations continuous openings can be introduced without causing injury to the casting cavity.
  • the projections are formed by a material accumulation of molding material on the side surfaces of the mold bales. With the mold closed, a recess is formed between the protrusions in some embodiments of the invention.
  • the rod-shaped guide member passes through the recess. Within the recess, the guide element is not surrounded by a channel. The guide is accomplished only by the openings in the upper and lower mold bales.
  • a continuous channel is introduced.
  • the channel in the Formballenuddle classroom can also protrude only in a part of the mold.
  • continuous channels are introduced in both mold bales.
  • the rod-like guide element is preferably a metal rod with a round cross section.
  • the diameter of the metal rod is matched to the diameter of the openings.
  • the diameter of the metal rod must be slightly less than the diameter of the openings: It proves to be particularly favorable if this results in a radial clearance of less than 1 mm, preferably less than 0.5 mm around the rod. Thereby, it is possible that the rod can be inserted and moved into the openings and yet a sufficiently precise guidance is achieved.
  • the openings form a guide line for the rod-shaped guide element. Thus, a linear guide of the guide element is achieved.
  • the rod-like guide element is reduced at its front end in its diameter.
  • the front end of the rod is formed as a conical tip. This facilitates the insertion of the rod into the openings.
  • at least one opening is formed funnel-shaped widened on the side facing the opposite mold bale, in order to facilitate the rod entry into the opening.
  • the openings form a vertical guide line for horizontal alignment of the molded bales.
  • the aim of the horizontal alignment is to position the mold bales so that the two casting chamber halves are joined together correctly and thereby form the complete casting cavity, without any horizontal displacement of the halves to each other.
  • the casting cavity must give the negative image of the casting to be cast. By means of the device according to the invention it is prevented that there is a lateral displacement of the casting cavity halves and thus an offset of the casting.
  • the use of the invention allows rapid horizontal alignment of the mold balls to each other.
  • a molded bale has a bead formed from molding compound.
  • the bead forms the positive counterpart to a hollow in the opposite ball of form.
  • the guide line formed by the openings serves a pre-alignment which causes the bead to fit into the cavity.
  • the bead is positioned horizontally displaced with respect to the cavity during assembly of the molded bales. This can damage the bead.
  • the bead formed from molding compound can be destroyed by the pressure applied to it during assembly.
  • the bead is a geometric shape having a hemispherical front and cylindrical sidewalls.
  • the hemispherical shape facilitates the sliding of the bead into the cavity. Through the cylindrical side walls a fine guidance of the bead is achieved in the cavity.
  • the cavity is designed as a negative counterpart to the bead.
  • the openings are formed so that they form a guide line for a connecting element.
  • the connecting element is preferably a metal rod which is provided with a thread.
  • the thread can either run along the entire bar or be applied only at the two ends of the rod.
  • the clamping of the two mold balls to each other preferably takes place by means of two clamping nuts which are screwed onto the two ends of the rod.
  • a plate-shaped surface presses on the molding material and presses the bales together.
  • either the clamping nut may be formed with a plate-shaped surface or it can be commercially available nuts with a plate-shaped washer are used.
  • a counterpart is integrated in one of the molded bales.
  • a clamping nut can be filled into a molded bale.
  • the plate-shaped surface of the clamping nut is enclosed by molding material.
  • the connecting element is screwed at one end into the clamping nut and protrudes with its other end from the opposite Mold bales out.
  • On the protruding end of a second nut is screwed. By tightening the clamping nuts, the bales are braced against each other.
  • molding material is filled into molding boxes and / or molding frames, which are rigid, bending and twist-free parts for receiving and retaining the molding compound compressed therein.
  • the cured molding material is used in the form of endfesten molded bales for sand casting.
  • Such a sand mold consists of at least two molded parts. In horizontally split molds these are referred to as upper and lower bales.
  • bolts are positioned on the fastening elements, which introduce the openings into the mold bales during production of the molded bales.
  • the bolts are arranged so that they place the openings so that they form a vertical guide line for a rod-like guide element for horizontal alignment of the mold bales for two opposite mold bales.
  • the bolts can be screwed onto the fasteners.
  • Fig. 1 a are items of the mold according to the invention shown.
  • the mold consists of a lower mold bale 1 and an upper mold bale 2.
  • an opening 3 is introduced in the lower mold bale 1.
  • the upper mold bale 2 contains an opening 4.
  • the openings 3, 4 form a guide line for the guide element 5.
  • the guide element 5 is formed at its front end as a conical tip 6.
  • the guide element 5 has a round cross section in the exemplary embodiment.
  • the diameter of the guide element 5 is matched to the diameter of the openings 3, 4.
  • the conical tip 6 facilitates insertion of the guide element 5 into the opening 4 of the upper mold bale 2.
  • a pouring basin 7 is introduced in the upper mold bale 2 .
  • the liquid melt is filled.
  • the melt passes into a casting cavity 9, which is bounded by the lower mold bale 1 and the upper mold bale 2.
  • the lower mold bale 1 has a bead 10 on its side facing the upper mold bale 2.
  • the bead 10 formed of molding compound is the positive counterpart to the cavity 11 in the upper mold bale 2.
  • the lower mold bale 1 In the lower mold bale 1 is still a counterpart 12 for a connecting element 13 (in the Fig. 1 not shown) integrated.
  • the counterpart 12 in the exemplary embodiment is a clamping nut which is embedded in the mold material with a plate-shaped surface.
  • the opening 3 in the lower mold bale 1 expands to the side facing the upper mold bale 2.
  • the lower mold bale 1 has a projection 14 formed from a material accumulation.
  • the upper mold bale 2 has a projection 15 formed from a material accumulation. In the projections 14, 15 are the openings 3, 4th
  • Fig. 1b the guide element 5 was inserted through the opening 4 of the upper mold bale 2 and protrudes into the opening 3 of the lower mold bale 1.
  • the diameter of the internal thread of the counterpart 12 is greater than the outer diameter of the guide element 5, so that the guide element by the counterpart 12th can be guided and within the openings 3, 4 and within the counterpart 12 is freely movable.
  • the bales 1, 2 are aligned horizontally to each other. To close the mold, the bales 1, 2 must be moved only in the vertical direction to each other.
  • the bead 10 is formed on its side facing the upper mold bale 2 as a hemisphere, wherein any other shape is also possible, for example a conical shape.
  • the side walls of the bead 10 and cavity 11 are cylindrical in shape and serve as a fine guide during the assembly of the molded bales 1, 2.
  • Fig. 1c the mold is shown in the closed position.
  • the bead 10 fits seamlessly into the cavity 11.
  • a recess 16 forms between the upper and lower mold bales 2, 1 or between the projections 14, 15.
  • the guide element 5 is visible.
  • Fig. 2 shows a form of bale variant without protrusions.
  • the openings 3, 4 are here arranged directly in molded bales 1, 2, which were formed without projections. On the presentation of pouring basin, pouring channel and pouring cavity was omitted here for reasons of clarity.
  • a connecting element 13 By means of two counterparts 12, 16, the molded bales 1, 2 are clamped.
  • the connecting element 13 is in Embodiment to a metal rod with a round cross-section, which is provided at its ends with a thread.
  • the counterparts 12, 16 are designed as clamping nuts, which are screwed with their internal thread with the ends of the connecting element 13.
  • the counterparts 12, 16 exercise by means of plate-shaped discs a contact pressure on the mold bales 1, 2 and press in this way the two halves of the mold together.
  • the counterpart 12 is integrated into the opening 3 of the lower mold bale 1.
  • Fig. 3a, 3b are bolts 17, 18 shown for a lower mold bale.
  • the bolt 17 is used for a lower bale of height 220 mm.
  • the bolt 18 is used for a lower bale of height 330 mm.
  • the bolts 17, 18 are composed of a lower segment 19, a middle segment 20 and an upper segment 21.
  • the segments 19, 20, 21 are designed in the embodiment as a cylindrical metal body, which are firmly connected.
  • the middle segment 20 has a larger diameter than the other two segments 19, 21.
  • the lower segment 19 is provided with an external thread with which it is in an internal thread of a fastening screw 22 (shown in the Fig. 5a, Fig. 5b ) of a mold box or mold frame for the production of a mold bale is screwed.
  • the upper segment 21 generates the opening 3.
  • the diameter of the upper segment 21 is matched to the diameter of the guide element 5.
  • the diameter of the upper segment is slightly larger than the diameter of the guide element 5. In the exemplary embodiment, this difference in size is 1 mm, so that upon insertion of the guide member 5 in the opening 3, a radial clearance of 0.5 mm results.
  • the bolts 23, 24 are shown for the production of an upper mold bale.
  • the bolt 23 is used for an upper mold ball of height 220 mm.
  • the bolt 24 is used for an upper bale of height 330 mm.
  • the bolts 23, 24 are composed of a lower segment 25 and an upper segment 26.
  • the segments 25, 26 are executed in the embodiment as a cylindrical metal body, which are firmly connected.
  • the upper segment 26 has a larger size than the lower segment 25 Diameter.
  • the lower segment 25 is provided with an external thread with which it is screwed into an internal thread of a fastening screw 22 (shown in FIGS Fig. 5a, Fig. 5b ) of a mold frame or molding box for producing a mold bale is screwed.
  • the upper segment 26 generates the opening 4.
  • the diameter of the upper segment 26 is matched to the diameter of the guide element 5.
  • the diameter of the upper segment 26 is slightly larger than the diameter of the guide element 5. In the exemplary embodiment, this difference in size is 1 mm, so that upon insertion of the guide member 5 in the opening 4 results in a radial clearance of 0.5 mm.
  • a fastening screw 22 for the production of molded bales is shown in side view.
  • Fig. 5 a is the fastening screw as a side view
  • Fig. 5b shown as a plan view.
  • the head 27 of the fastening screw is composed of side walls and a top. The side walls form a hexagon. The upper part is bevelled.
  • a bore with internal thread 28 is introduced, in which the lower segments 19, 25 of the bolts 17, 18, 23, 24 are screwed.
  • the fastening screw 22 presses on the mold bales.
  • Under the disc-shaped segment 29, a cylindrical segment 30 is arranged.
  • the lower segment 31 of the fastening screw 22 is provided with an external thread onto which a sleeve 32 can be screwed.
  • the rod-like guide element 5 is shown.
  • the front end of the guide member 5 is formed as a conical tip 6.
  • the guide member 33 of the guide member 5 is formed in the embodiment as a cylindrical body to which a handle 34 connects.
  • the handle 34 is angled to the guide member 33.

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

Claims (6)

  1. Moule de coulée sans châssis, divisé horizontalement, comprenant au moins deux parties de moule (1, 2) formées à partir d'une masse de moulage, lesquelles délimitent une cavité de coulée (9), deux parties de moule opposées (1, 2) présentant des ouvertures (3, 4) et les ouvertures (3, 4) pour l'alignement horizontal des parties de moule (1, 2) formant une ligne de guidage verticale pour un élément de guidage en forme de barre (5), caractérisé en ce que les ouvertures (3, 4) pour le serrage des parties de moule (1, 2) forment une ligne de guidage verticale pour un élément de connexion (13), les parties de moule (1, 2) pouvant être serrées par le biais de l'élément de connexion (13) au moyen de deux pièces conjuguées (12, 16) et au moins une pièce conjuguée (12) étant intégrée à l'intérieur de l'ouverture (3) d'une partie de moule (1).
  2. Moule de coulée selon la revendication 1, caractérisé en ce qu'une partie de moule (1) présente un bourrelet (10) formé d'une masse de moulage, qui forme la pièce positive conjuguée à un creux (11) dans la partie de moule opposée (2).
  3. Moule de coulée selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que les parties de moule (1, 2) présentent des saillies (14, 15) formées à partir d'une accumulation de matériau de masse de moulage, dans lesquelles sont intégrées les ouvertures (3, 4).
  4. Moule de coulée selon la revendication 3, caractérisé en ce qu'un évidement (16) est formé entre les saillies (14, 15) lorsque le moule de coulée est fermé.
  5. Moule de coulée selon l'une quelconque des revendications 1 à 4, caractérisé en ce que l'élément de guidage en forme de barre (5) est réalisé au niveau de son extrémité avant sous forme de pointe tronconique (6).
  6. Moule de coulée selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'au moins une ouverture (3) est réalisée de manière élargie en forme d'entonnoir au niveau du côté tourné vers la partie de moule opposée (2).
EP10759644.7A 2009-09-30 2010-09-29 Moule de coulée sans châssis Not-in-force EP2483012B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009043555A DE102009043555B4 (de) 2009-09-30 2009-09-30 Kastenlose Gießform
PCT/EP2010/064411 WO2011039220A1 (fr) 2009-09-30 2010-09-29 Moule de coulée sans châssis et son procédé de production

Publications (2)

Publication Number Publication Date
EP2483012A1 EP2483012A1 (fr) 2012-08-08
EP2483012B1 true EP2483012B1 (fr) 2016-07-13

Family

ID=43569865

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10759644.7A Not-in-force EP2483012B1 (fr) 2009-09-30 2010-09-29 Moule de coulée sans châssis

Country Status (8)

Country Link
US (1) US20120217677A1 (fr)
EP (1) EP2483012B1 (fr)
JP (1) JP5659233B2 (fr)
CN (1) CN102686332B (fr)
BR (1) BR112012006424A2 (fr)
DE (1) DE102009043555B4 (fr)
RU (1) RU2552814C2 (fr)
WO (1) WO2011039220A1 (fr)

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Also Published As

Publication number Publication date
RU2012114484A (ru) 2013-11-10
US20120217677A1 (en) 2012-08-30
JP2013506557A (ja) 2013-02-28
DE102009043555A1 (de) 2011-04-07
RU2552814C2 (ru) 2015-06-10
EP2483012A1 (fr) 2012-08-08
DE102009043555B4 (de) 2013-09-12
JP5659233B2 (ja) 2015-01-28
BR112012006424A2 (pt) 2016-04-19
CN102686332A (zh) 2012-09-19
WO2011039220A1 (fr) 2011-04-07
CN102686332B (zh) 2016-05-18

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