EP3401037A1 - Moule destiné à la fabrication d'un noyau de coulé - Google Patents

Moule destiné à la fabrication d'un noyau de coulé Download PDF

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Publication number
EP3401037A1
EP3401037A1 EP18171173.0A EP18171173A EP3401037A1 EP 3401037 A1 EP3401037 A1 EP 3401037A1 EP 18171173 A EP18171173 A EP 18171173A EP 3401037 A1 EP3401037 A1 EP 3401037A1
Authority
EP
European Patent Office
Prior art keywords
shell
mold
guides
shell molds
mold according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP18171173.0A
Other languages
German (de)
English (en)
Other versions
EP3401037B1 (fr
Inventor
Olaf Stuhldreier
Pascal Decker
Heinrich Dr. Fuchs
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.)
Martinrea Honsel Germany GmbH
Original Assignee
Martinrea Honsel Germany GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Martinrea Honsel Germany GmbH filed Critical Martinrea Honsel Germany GmbH
Publication of EP3401037A1 publication Critical patent/EP3401037A1/fr
Application granted granted Critical
Publication of EP3401037B1 publication Critical patent/EP3401037B1/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
    • B22C17/00—Moulding machines characterised by the mechanism for separating the pattern from the mould or for turning over the flask or the pattern plate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C13/00—Moulding machines for making moulds or cores of particular shapes
    • B22C13/12—Moulding machines for making moulds or cores of particular shapes for cores
    • 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
    • B22C7/06—Core boxes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/10—Cores; Manufacture or installation of cores

Definitions

  • the invention relates to a mold for producing a casting core, which is a casting technique for imaging coolant channels as well as coolant inflows and outflows of a cooling jacket of an electric motor.
  • the production of the cooling jacket may be useful in a casting process.
  • this type of production requires a suitable casting core, which must be placed within the mold, in order to image the coolant channels and also the necessary coolant inflows and outflows.
  • the casting core required for this purpose is also relatively complex.
  • the aim is therefore to enable the molding of a casting core, which images the coolant channels and coolant inflows and outflows of the cooling jacket of an electric motor, and which can be demolded well and non-destructively after molding.
  • the core mold space filled with core material in manufacturing the casting core is primarily determined by an outer shape and an inner shape.
  • the outer mold forms the outer wall of the core mold cavity
  • the inner mold forms the inner wall of the core mold cavity.
  • the cylindrical inner shape is enclosed over its entire circumference by the cylindrical outer shape.
  • Components of the inner mold are two first mold shells and two second mold shells, wherein all four mold shells together form and define the inner wall of the core mold cavity, and wherein the second mold shells are each movably arranged between the first mold shells.
  • Part of the inner mold is a first demolding mechanism, which is arranged between the first shell molds and adapted to move them toward each other.
  • Part of the inner mold is also a second demolding mechanism, which is arranged between the second shell molds and adapted to move these second shell molds toward each other.
  • this comprises a longitudinally movably arranged in the direction of the central axis tray carrier with two guides arranged thereon, wherein on one guide the one, and on the other guide the other of the two first shell molds is slidably mounted, and wherein the longitudinal directions of these two guides converge towards each other. Converging means that the virtual axes of the two longitudinal directions meet at a point outside the shell carrier.
  • this comprises a longitudinally movably arranged in the direction of the central axis shell carrier with two guides arranged thereon, wherein on the one guide, the one and on the other guide, the other of the two second shell molds is slidably mounted, and wherein the longitudinal directions of these two guides converge towards each other. Converging means that the virtual axes of the two longitudinal directions meet at a point outside the shell carrier.
  • the two shell carrier are longitudinally movable in the direction of the central axis to each other, for. B. by the one shell carrier is slidably disposed in the other shell carrier.
  • the guides on the one shell carrier and the guides on the other shell carrier are each aligned so that they converge in the same direction or both diverge in the opposite direction.
  • stops are formed on the shell carriers, which limit the mutual longitudinal mobility of the shell carrier at least in the direction opposite the convergence of the guides.
  • one of the shell carrier including the guides arranged on it is integrally formed, however, the other shell carrier including the arranged on him two-piece two guides in the direction of formed central axis successively arranged support portions.
  • the division of the guide arranged on the other shell carrier is such that guide sections are provided on each of the carrier sections, the guide sections being aligned with one another.
  • the integrally formed shell carrier is divided by a longitudinal slot into two segments, and the segments are connected to each other only via webs.
  • one of the shell carriers has a frustoconical basic shape
  • the other shell carrier a basic shape of a cylinder and radially projecting from the cylinder arms.
  • the cylinder is longitudinally guided in the other, ie the frustoconical shell carrier. This contributes to a nested and thus compact construction of the two mechanisms that pull back the pair of shell molds during demolding.
  • the guides are of T-shaped cross section, and they engage in grooves provided with corresponding undercuts on the inner sides of the respective shell molds.
  • the facing inner sides of the first shell molds forming the first shell molds successively each have an end portion, a central portion and another end portion, and that the inner sides on the central portion in comparison to the two end portions to form a recess jump back.
  • a casting mold consisting of foundry core 1 is reproduced.
  • the casting core 1 serves to image coolant ducts 2, a coolant inflow 3 and a coolant outflow 4 of a cooling jacket of an electric motor by casting. Therefore, if the casting core 1 is placed inside a casting mold, it defines those regions where the coolant channels 2, the coolant inlet 3 and the coolant outlet 4 are located after completion of the casting.
  • Fig. 2 the form designed according to the invention is reproduced in its entirety. It consists of an outer mold 9 and an inner mold 10, which are both arranged around a central axis A around.
  • the core shape space whose shape is in Fig. 1 is reproduced on the basis of the generated object (casting core) is accordingly also designed substantially cylindrical.
  • the outer wall of the core mold space is formed by the outer mold 9, and the inner wall of the core mold space by the inner mold 10.
  • openings can be the core material, for.
  • As a casting sand fill in the core mold cavity in which the casting sand then solidified to the casting core.
  • the outer mold 9 is composed of a total of four segments, of which each segment extends approximately over a quarter circle. During demoulding, the four segments are moved radially outward, whereby then the produced casting core 1 is exposed on its outer side.
  • the demolding of the inner mold 10 is not feasible by a simple radial movement of individual segments, since they would collide with each other in their movement inwardly to the longitudinal axis A.
  • Fig. 4 also part of the inner mold 10 four segments, which complement each other to a cylinder and form on their outer sides of the inner wall of the core mold cavity.
  • the four segments are not of uniform size and shape. Instead, two segments are formed as first shell molds 11, and two further segments as second shell molds 13. All four shell molds 11, 13 together define the inner wall of the core mold cavity, with the second mold pan 13 each being disposed between the first mold pan 11. Since the second mold shells 13 are each arranged between the first mold shells 11, both second mold shells 13 can be moved inwards towards the central axis A of the inner mold 10, without abutting against the first two mold shells 11.
  • Fig. 4 and Fig. 4a is the consequence of this different design on the one hand, the shell molds 11 and the other hand, the shell molds reproduced 13:
  • the two second shell molds 13 are here moved radially inward, but are still between the first shell molds 11.
  • the recesses 17 in the first shell molds 11 are achieved in that the mutually facing inner sides of the two first shell molds 11 successively each have an end portion 18a, a central portion 19 and a further end portion 18b.
  • the inner sides of the first shell molds 11 jump back on the central portion 19 as compared to the two end portions 18 a, 18 b, forming the recess 17, respectively.
  • FIGS. 4 and 10 which reproduce the pairs of shell molds 11, 13 respectively in the operating position of maximum removal from the mold, recognize the different circumferential size on the one hand of the shell molds 11 and on the other hand of the shell molds 13.
  • the first shell molds 11 each extend over a larger circumferential angle than the second shell molds 13.
  • the first shell molds 11 each extend over a circumferential angle of 100 °
  • the second shell molds 13 each only over a circumferential angle of 80 °.
  • Components of the inner mold 10 are also two demolding mechanisms, through which the shell molds 11, 13 can be moved in the direction of the central axis A.
  • a first demolding mechanism is arranged between the first mold shells 11 and designed to move these first mold shells 11 towards each other.
  • a second demolding mechanism between the second shell molds 13 is arranged and adapted to move the second shell molds 13 toward each other.
  • Fig. 5 is the here two-piece constructed first shell carrier 20 again, and Fig. 6 the one-piece designed second tray carrier 30. Die Fig. 7 shows the two shell carrier 20, 30 in nereinercalledem state. This is at the same time the operating position during the molding process.
  • the first shell carrier 20 has a basic shape composed of a central cylinder 21 and four radially projecting arms 22.
  • the cylinder 21 is of such size that it can slide substantially free of play in a cylindrical opening 24, with which the second shell carrier 30 is provided.
  • the guides 25A, 25B are formed.
  • the guides 25A, 25B are each of T-shaped cross section and designed to be in undercut grooves 26 slide on the inner sides of the first shell mold 11 without play.
  • the two shell carrier 20, 30, as in Fig. 7 reproduced, are mounted in each other, the first shell carrier 20 is formed in two parts of two in the direction of the axis A successively arranged support portions 20A, 20B.
  • the support portion 20A includes the cylinder 21 and the two radially projecting arms, on which the two guide portions 25A are located.
  • the other, in comparison shorter trained support portion 20B comprises the two other arms 22, at the ends of the two guide portions 25B are formed.
  • the design of the first shell carrier 20 is such that the guide sections 25A and 25B arranged on the same side of the axis A are aligned with each other, and therefore together form a guide 25 interrupted in a central section.
  • the guide 25 composed on the one side of the axis A of the guide portions 25A and 25B, and the guide 25 composed of the guide portions 25A and 25B on the other side of the axis A each extend obliquely to the axis A and converge with each other in Fig. 5 which illustrates the direction of the guide 25, dashed line.
  • the in Fig. 6 reproduced second shell carrier 30 has a frustoconical basic shape. At its with respect to the central axis A opposite sides of each guide 35 of T-shaped cross-section are formed, which engage in grooves 36 on the second shell molds 13 slidably. For this purpose, the grooves 36 are provided on the second shell molds 13 with corresponding undercuts.
  • the frusto-conical shell carrier 30 has centrally the cylindrical opening 24, in which the cylinder 21 of the other shell carrier 20 is mounted longitudinally movable.
  • the shell support 30 is integrally formed and is divided by a the arms 22 space bidding longitudinal slot 38 into two substantially semi-conical segments, said segments are connected to each other only two webs 39.
  • a stop 37 At the end of each longitudinal slot 38 is a stop 37.
  • the corresponding counter-stop 27 is located at the two longer arms 22 of the first shell carrier 20.
  • the formed on the shell carrier 30 stops 37 limit together with the formed on the shell support 20 stops 27, the mutual longitudinal mobility of the Shell carrier 30, 20 in the converging of the guides 35, 25 opposite direction.
  • FIGS. 9a and 9b illustrate, in two different operating positions, the operation of the two demolding mechanisms: In the operating position according to Fig. 9a is moved by a longitudinal movement of the second shell carrier 30 in the direction of the central axis A, each of the two second shell molds 13 inward. The first two shell molds 11 do not perform any inward movement at this time.
  • the second shell carrier 30 is further moved along the axis A, wherein it has already come to a abutment of the stopper 37 against the stop 27.
  • the shell carrier 20 is taken along by the longitudinal movement of the shell carrier 30, so that henceforth both shell carriers 20, 30 move together in the direction of the central axis A.
  • the first shell carrier 20 moves in the longitudinal direction, it moves on its guides 25, the first shell molds 11 inwards, so that these peripheral areas are removed from the mold.
  • the demolding takes place in two stages (first, the second shell molds 13, then only the first shell molds 11), but by means of a single, preferably continuously performed drive movement.
  • This drive movement is achieved by a continuous longitudinal movement of the second shell carrier 30, which automatically entrains the first shell carrier 20 after a certain longitudinal travel.
  • Materials for the inner mold 10 may be plastic, metal or wood.
  • Suitable core material of the foundry core 1 are sand or free-flowing oxidic substances or substance mixtures which contain inorganic or organic binders, these substances or mixtures of substances curing either thermally and / or chemically.

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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)
EP18171173.0A 2017-05-09 2018-05-08 Moule destiné à la fabrication d'un noyau de coulé Active EP3401037B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017109921.2A DE102017109921A1 (de) 2017-05-09 2017-05-09 Form zum Herstellen eines Gießkerns

Publications (2)

Publication Number Publication Date
EP3401037A1 true EP3401037A1 (fr) 2018-11-14
EP3401037B1 EP3401037B1 (fr) 2020-01-22

Family

ID=62142971

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18171173.0A Active EP3401037B1 (fr) 2017-05-09 2018-05-08 Moule destiné à la fabrication d'un noyau de coulé

Country Status (4)

Country Link
US (1) US10384261B2 (fr)
EP (1) EP3401037B1 (fr)
CN (1) CN108856651A (fr)
DE (1) DE102017109921A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110328348A (zh) * 2019-06-27 2019-10-15 广东银迪压铸有限公司 一种新能源汽车电机铝壳体的生产方式

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017105478A1 (de) * 2017-03-15 2018-09-20 Nemak, S.A.B. De C.V. Vorrichtung zum Schießen eines Gießkerns
DE102019110580A1 (de) * 2019-04-24 2020-10-29 Nemak, S.A.B. De C.V. Vorrichtung und Verfahren zur Entnahme mindestens eines Kühlelementes aus einem wenigstens teilweise entformten Gussteil, Verfahren zur Einbringung mindestens eines Kühlelementes in einen Formkern einer Gussteilform, Kühlelement sowie Gussteil
CN110548856B (zh) * 2019-10-10 2021-09-07 北京航星机器制造有限公司 一种铝合金壳体铸件的复合铸型及其成型方法
CN114454308A (zh) * 2022-03-01 2022-05-10 北京利尔高温材料股份有限公司 一种稳流器滑动式内芯组合模具

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07266000A (ja) * 1994-03-28 1995-10-17 Koyama:Kk 中子の成形型および中子
US20080274289A1 (en) * 2004-06-21 2008-11-06 Akira Sakurai Mold Device and Method of Manufacturing Cylinder Block
JP2015044217A (ja) * 2013-08-28 2015-03-12 本田金属技術株式会社 中子成形装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT328177B (de) 1973-11-23 1976-03-10 Osterreichische Symalen Ges M Vorrichtung zur formung von muffen
GB0514751D0 (en) * 2005-07-19 2005-08-24 Holset Engineering Co Method and apparatus for manufacturing turbine or compressor wheels
CN201132201Y (zh) * 2007-11-30 2008-10-15 李春奎 金属型内芯组合式浇铸模具
AT511230A1 (de) 2011-04-15 2012-10-15 Ifw Manfred Otte Gmbh Formkern für formwerkzeug
DE102014207333A1 (de) * 2014-04-16 2015-10-22 Mahle International Gmbh Vorrichtung zum Herstellen eines Kolbens

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07266000A (ja) * 1994-03-28 1995-10-17 Koyama:Kk 中子の成形型および中子
US20080274289A1 (en) * 2004-06-21 2008-11-06 Akira Sakurai Mold Device and Method of Manufacturing Cylinder Block
JP2015044217A (ja) * 2013-08-28 2015-03-12 本田金属技術株式会社 中子成形装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110328348A (zh) * 2019-06-27 2019-10-15 广东银迪压铸有限公司 一种新能源汽车电机铝壳体的生产方式

Also Published As

Publication number Publication date
DE102017109921A1 (de) 2018-11-15
EP3401037B1 (fr) 2020-01-22
US10384261B2 (en) 2019-08-20
US20180326474A1 (en) 2018-11-15
CN108856651A (zh) 2018-11-23

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