WO2007121875A1 - Bloc de moulage pour le coulage en sÉrie de pièces - Google Patents

Bloc de moulage pour le coulage en sÉrie de pièces Download PDF

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Publication number
WO2007121875A1
WO2007121875A1 PCT/EP2007/003282 EP2007003282W WO2007121875A1 WO 2007121875 A1 WO2007121875 A1 WO 2007121875A1 EP 2007003282 W EP2007003282 W EP 2007003282W WO 2007121875 A1 WO2007121875 A1 WO 2007121875A1
Authority
WO
WIPO (PCT)
Prior art keywords
mold
mold block
block
blocks
parts
Prior art date
Application number
PCT/EP2007/003282
Other languages
German (de)
English (en)
Inventor
Xaver Stemmer
Original Assignee
Audi 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 Audi Ag filed Critical Audi Ag
Publication of WO2007121875A1 publication Critical patent/WO2007121875A1/fr

Links

Classifications

    • 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
    • B22C9/103—Multipart cores
    • 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 molding block of a mold series consisting of a plurality of serially arranged mold blocks for the series casting of workpieces, in particular combustion engine components, wherein adjacent mold blocks complement each other to form a lost shape with at least one mold cavity serving to form a workpiece.
  • Such a mold block for use in a boxless molding line is known.
  • mold blocks are produced in succession and arranged serially, with the particular horizontally extending mold string results for the series casting.
  • the mold blocks are designed so that each complementary to the beginning of the mold string back of a mold block and the front of the subsequent mold block of the mold string to form a complementary.
  • the resulting molds are lost molds, the mold blocks are mostly made of a mineral granules and a binder.
  • each mold block is attached to the end of the mold string after manufacture and the mold string is advanced accordingly.
  • In the feed direction behind the station for the production of the mold blocks is a casting station for the serial casting of castings.
  • the binder is usually chosen so that it is destroyed by the temperature generated during the casting process and the molds then decay. If this is not or only partially the case, the mold blocks are mechanically destroyed at a further, lying in the feed direction behind the casting station station and removed the casting. In a further machining process arise from the castings, for example, by post-processing in which, for example, excess material is removed, the workpieces. If you work with a stationary mold string, the individual stations are moved accordingly. The insertion of the mold blocks is done for example with an automatic loading device and the series casting by a Vergnite immunity, so that the production of castings on the boxless molding plant is very inexpensive.
  • the construction of the molds from each two adjacent one-piece mold blocks makes the automation quite simple, but limits the ability to create more complex castings.
  • At least one of the mold blocks is composed of a plurality of separate mold block parts.
  • Such a thing Compound mold block makes it possible to create more complex castings on a boxless molding line.
  • the different shape block parts can be manufactured individually depending on the required imaging accuracy of a surface portion of the casting.
  • the mold block parts of the same mold block are arranged horizontally next to each other transversely to the orientation of the mold string.
  • the mold block parts can be arranged directly adjacent thereto and, for example, completely form the part of the mold cavity which is assigned to the corresponding mold block.
  • the horizontally juxtaposed mold block parts can also form side walls of the mold block, between which further mold block parts or parts of further mold block parts are arranged.
  • the horizontal juxtaposed blocks form, for example, the end portions of the mold cavity.
  • the mold block parts of the same mold block may be formed one behind the other along the orientation of the mold string.
  • Such a composition of the molding block of mold block parts may be advantageous in a workpiece shape which can not be realized by a two-part mold.
  • At least one of the mold block parts is arranged over at least one other of the mold block parts of the same mold block.
  • At least two of the mold block parts are positively connected.
  • a positive connection between the mold block parts increases the stability of the individual mold block, which can be handled easier after assembly. If the form fit results in a sufficiently inherently stable mold block, it can be assembled separately and then attached to the end of the mold string.
  • the positive connection can counteract the casting process during the subsequent casting process and ensure the stability of the molding block during the casting process.
  • At least two of the mold block parts of the same mold block are positively connected in a direction extending transversely to the orientation of the mold strand.
  • the component of the casting pressure arising during casting is counteracted. knitted, which can not be compensated by the mass of the molding blocks surrounding the mold block.
  • At least two of the mold block parts of the same mold block are positively connected in a direction running along the orientation of the mold strand.
  • the positive engagement of the mold block parts along the orientation of the mold string stabilizes the molded block composed of mold block parts in this direction, so that the mold blocks can be assembled in a first step and then attached to the end of the mold string.
  • the mold block parts of at least one mold block are connected by positive weight of the upper mold block part and / or an additional weight vertically.
  • superimposed mold block parts can additionally or alternatively to a positive connection in the vertical direction hold a force fit by gravity the mold block.
  • the weight of the upper mold block part and / or an additional weight, which is placed for example on the upper mold block part can be used.
  • adjacent mold blocks are positively connected in a direction transverse to the orientation of the mold strand direction.
  • the positive connection can be ensured, for example, by pins on the front of the mold block, which engage in corresponding recesses of the adjacent mold block, so that the mold blocks forming the shape are exactly aligned and results in a guide in the advance of the mold string.
  • adjacent shaped blocks in particular with regard to their shape, are designed differently.
  • a different configuration of adjacent mold blocks results, for example, when cast in alternation at least two different mold cavities.
  • different workpieces can be formed or the mold cavity periodically alternately aligned, for example, to form a workpiece with optimized space utilization.
  • At least one of the mold block parts of the mold block is at least partially associated with at least one further mold block.
  • each of the mold block parts is shaped cavity-forming.
  • a plurality of mold block parts forming the shape of a cavity are required, so that it is favorable to keep the total number of mold block parts low in that each of the mold block parts is shaped cavity-forming.
  • the mold block parts consist in particular of compacted sand and in particular temperaturunbe operatingm binder.
  • This combination of materials is preferred in lost forms, as can be made of these low-cost materials stable shapes that are destroyed by the high temperature during the casting process.
  • adjacent mold blocks are held against each other by adhesion.
  • the mass of the juxtaposed mold blocks ensures a frictional connection, which counteracts the resulting casting pressure in the direction of the mold string.
  • the invention further relates to a method for producing a molding block of a mold series consisting of a plurality of serially arranged mold blocks for the serial casting of workpieces, in particular combustion engine components, wherein adjacent mold blocks complement each other to form a lost shape with at least one mold cavity serving to form a workpiece.
  • at least one of the mold blocks is composed of a plurality of separate mold block parts.
  • the mold block parts are assembled so that they result in a coherent mold block by form and / or adhesion.
  • the individual mold block parts are successively joined together so that with the onset of the last mold block part all mold block parts are connected so that they can withstand the casting pressure arising during casting.
  • FIG. 1 shows a composition of a molding block subassembly which forms a bottom of a molding block subassembly
  • FIG. 2 shows a pre-assembly of sub-group elements of a molding block part designed as an intermediate core
  • FIG. 3 shows a retraction of the molding block part designed as an intermediate core
  • FIG. 4 shows a swiveling in of two mold block parts designed as front side cores
  • FIG. 5 shows a pre-assembly of sub-group elements of a mold block part designed as a separating core
  • FIG. 6 shows a retraction of the mold block part designed as a separating core
  • FIG. 7 shows a pre-assembly of sub-group elements of a shaped block part designed as a lid
  • Figure 8 is a placement of the formed as a lid mold block part on the mold block and
  • Figure 9 shows a completely assembled mold block for the series casting of two crankcases.
  • Figures 1 to 9 show the structure of a mold block 1 for a series casting of two crankcases for two-cylinder four-cylinder engines with a single casting on one not shown, boxless molding plant, in which form a plurality of serially arranged mold blocks 1 a mold string, not shown.
  • a single mold block 1 has as a base on a bottom 2 shown in Figure 1, which is formed by four mold block parts 3, 4, 5, 6.
  • the mold block parts 3, 4, 5, 6 are aligned with their longitudinal axes in the direction of the mold string, not shown, and arranged horizontally next to one another transversely to the alignment of the mold string (arrow 7) to each other.
  • the mold block parts 3, 4, 5, 6 each consist of one, the bottom 2 of the mold block 1 forming bottom portion 8, 9, 10, 11 and two in the direction of the mold strand, not shown (arrow 7) spaced from each other aligned molding portions 12 to 19, the each have a cylindrical upper end portion 20.
  • the molding portions 12, 13, 14, 15 together form a mold portion 21, the mold portions 16, 17, 18, 19 together form a mold portion 22, wherein the mold portions 21, 22 determine the shape of each crankcase of the two resulting during casting crankcase.
  • the mold portions 21, 22 determine the shape of each crankcase of the two resulting during casting crankcase.
  • opposite side regions 23, 24 of the bottom 2 which are assigned to the bottom regions 8, 11, there are recesses 25 and recesses 26, which can only be seen in the side region 24 in the figures.
  • the intermediate core 27 aligned transversely to the longitudinal sides of the mold block parts 3, 4, 5, 6 has a planar upper side 29, two partially planar, partially cavity-forming end faces 30, 31 and two longitudinal side regions 32, 33 which also face the mold regions 21, 22 , On the longitudinal side region 32 facing the molding region 21, two subgroup elements 34, 35 are arranged (see FIG. 2). On the longitudinal side region 33 opposite the longitudinal side region 33 of the intermediate core 27 there are two further subgroup elements 36, 37. On an underside 38 opposite the upper side 29, the intermediate core 27 has an edge region 39, 40 at the level of the side regions 31, 32. 3 shows the installation position of the intermediate core 27 within the molding block 1.
  • the intermediate core 27 spans all mold block parts 3, 4, 5, 6 of the bottom 2 and engages with the edge regions 39, 40 of its underside 38 in the recesses 25 of the bottom regions 8, 11th Figure 4 shows the bottom 2 and the intermediate core 27 together with two adjacent to the end faces 30, 31 of the intermediate core 27, formed as front side cores 41, 42 mold block parts 43, 44.
  • the front side cores 41, 42 have on their undersides 45, 46 rear handles 47, in which the recesses 26 of the bottom regions 8, 11 engage and connect the front side cores 41, 42 with the bottom 2 in a form-fitting manner.
  • the front pages 30, 31 of the intermediate core 27 are inner sides 48, 49 of the front side cores 41, 42 facing, which are partially formmitsentend.
  • Separating core 53 which is oriented transversely to the longitudinal sides of the mold block parts 3, 4, 5, 6, has a bottom region 55, two plane end faces 56, 57 and a longitudinal side region 58 which also faces the cavity 22 and also faces the mold region 22 a subgroup element 59 is arranged (see FIG. 5).
  • a further sub-group element 61 is located on a longitudinal side region 60 of the separating core 53 opposite the longitudinal side region 58.
  • FIG. 7 shows the composition of a last mold block part 66 designed as a cover 65 with two subassembly elements 67, 68, wherein the cover 65 shown in FIG.
  • FIG. 8 shows The cylindrical shaped elements 70 to 77 are based on the cylindrical end regions 20 of the mold sections 12 to 19 of the mold block parts 3, 4, 5, 6.
  • the pins 52 of the front side cores 41, 42 as well as the pins 63 of the separating core 53 engage positively in the recesses 79, 82 of the formed as a lid 65 mold block part 66.
  • the top 29 of the intermediate core 27 engages in the recess 83 of the lid 65 and also forms a positive connection.
  • FIG. 9 shows the completely assembled molding block 1, which with its front 84 is brought to the back of another, not shown mold block, so that a shape is formed.
  • the mold has in this embodiment two serving to form two crankcases, not shown, mold cavities lying in alignment of the mold string (arrow 7), not shown, one behind the other.
  • the corresponding feeders of the mold, which are located in the lid 65 of the mold block 1, are not shown in the figures.
  • step 1 the four mold block parts 3, 4, 5, 6 transversely to the orientation of the shown mold string (arrow 7) pushed together (arrow 85), wherein the bottom 2 of the mold block 1 is formed (see Figure 1).
  • step 2 the subgroup elements 34, 35, 36, 37 are positioned on the longitudinal side regions 32, 33 of the intermediate core 27 (arrow 86).
  • step 2 the preassembled intermediate core 27 between the two mold portions 21, 22 retracted to the bottom 2 (arrow 87), wherein the edge portions 39, 40 of the intermediate core 27 in recesses 25 of the bottom portions 8 and 11 engage and provide a positive connection that connects the mold block parts 3 to 6 firmly.
  • step 3 the front side cores 41, 42 placed directly on the bottom portion 8, 11, wherein the rear handle 47 of the end side cores 41, 42 engage in the recesses 26 of the bottom portions 8, 11 and then in the direction of the end faces 30, 31 of the intermediate core 27 pivoted in (arrow 88).
  • the subgroup elements 59, 61 are mounted on the longitudinal side regions 58, 60 (arrow 89).
  • a preassembled separating core 53 is moved up to the end of the forming region 22 (arrow 90), wherein the separating core 53 engages with undercut 64 in structures of the bottom 2 and the front side cores 41, 42 and separates the forming block 1 from a subsequent forming block, not shown .
  • the sub-group elements 67, 68 mounted on the bottom 69 of the lid 65 (arrow 91) that they surround the mold elements 70 to 77 of the lid 65.
  • the lid 65 as the last mold block part 66 of the mold block 1 is placed on the upper sides 50, 51 of the end face 41, 42 and the upper sides 29, 62 of the intermediate core 27 and the separating core 53 (arrow 92).
  • the pins 52 and 63 and the top 29 of the intermediate core 27 engage in the recesses 79, 82 and 83 of the lid 65.
  • the lid 65 ensures a positive connection of all other mold block parts 3, 4, 5, 6, 28, 43, 44, 54, where he himself horizontally also form-fitting and is vertically connected by its weight force frictionally connected to the rest of the mold block 1.
  • FIG. 9 shows the completely assembled molding block 1 for the series casting of two crankcases for in-line four-cylinder engines with only one mold on a boxless molding installation (not shown).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

L'invention concerne un bloc de moulage d'une ligne de moules constitué de plusieurs blocs de moulage disposés en série pour le coulage en série de pièces, en particulier de composants de moteur à combustion interne, des blocs de moulage adjacents se complétant en un moule perdu avec au moins un espace creux de moule servant à former une pièce. Il est prévu qu'au moins un des blocs de moulage (1) se compose de plusieurs éléments de blocs de moulage séparés (3, 4, 5, 6, 28, 43, 44, 54, 66). L'invention concerne en outre, une application correspondant et un procédé de fabrication correspondant du bloc de moulage.
PCT/EP2007/003282 2006-04-18 2007-04-13 Bloc de moulage pour le coulage en sÉrie de pièces WO2007121875A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200610017922 DE102006017922A1 (de) 2006-04-18 2006-04-18 Formblock für den Serienguss von Werkstücken
DE102006017922.6 2006-04-18

Publications (1)

Publication Number Publication Date
WO2007121875A1 true WO2007121875A1 (fr) 2007-11-01

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ID=38229321

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/003282 WO2007121875A1 (fr) 2006-04-18 2007-04-13 Bloc de moulage pour le coulage en sÉrie de pièces

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DE (1) DE102006017922A1 (fr)
WO (1) WO2007121875A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102632199A (zh) * 2012-03-09 2012-08-15 华东泰克西汽车铸造有限公司 高精度曲轴箱芯模组及其组装方法
CN101927338B (zh) * 2009-06-25 2012-11-07 广西玉柴机器股份有限公司 一种柴油机机体重力铸造方法
CN106040988A (zh) * 2016-08-03 2016-10-26 日月重工股份有限公司 船用柴油机机体砂芯的生产方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016201824A1 (de) 2016-02-08 2017-08-10 Volkswagen Aktiengesellschaft Formenstrang-Gießanlage mit 3D-Drucker und Verfahren zur Serienfertigung von Gussteilen

Citations (8)

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GB1210208A (en) * 1969-04-11 1970-10-28 James M Planten Improvements relating to shell moulds and the casting of metal therein
GB1462867A (en) * 1973-06-25 1977-01-26 Dansk Ind Syndikat System for making sand moulds with one or more cores
EP0047507A1 (fr) * 1980-09-06 1982-03-17 Michael Achinger Machine à mouler pour fabriquer des moules de fonderie sans châssis
WO1993011892A2 (fr) * 1991-12-07 1993-06-24 Baxi Partnership Limited Coulage d'alliages de metaux legers
WO2000076696A1 (fr) * 1999-06-09 2000-12-21 Georg Fischer Disa A/S Procede de coulee et moules multiples
US20020007931A1 (en) * 2000-07-17 2002-01-24 Crafton Scott P. Methods and apparatus for utilization of chills for casting
GB2372004A (en) * 2000-12-18 2002-08-14 Foseco Int A method of casting
US20020185250A1 (en) * 2001-06-11 2002-12-12 Shade Larry R. Casting of engine blocks

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DE3618703A1 (de) * 1986-06-04 1987-12-10 Bruehl Eisenwerk Verfahren zur herstellung von kernen fuer giessereizwecke und einrichtung zur durchfuehrung des verfahrens
ES2005911A6 (es) * 1987-10-22 1989-04-01 Erana Agustin Arana Mejoras introducidas en la conformacion de paquetes de machos para fundicion.
US5365997A (en) * 1992-11-06 1994-11-22 Ford Motor Company Method for preparing an engine block casting having cylinder bore liners
US5865241A (en) * 1997-04-09 1999-02-02 Exco Technologies Limited Die casting machine with precisely positionable obliquely moving die core pieces
DE19722599A1 (de) * 1997-05-29 1998-12-03 Hottinger Maschb Gmbh Vorrichtung und Verfahren zum Paketieren von Kernen
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Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1210208A (en) * 1969-04-11 1970-10-28 James M Planten Improvements relating to shell moulds and the casting of metal therein
GB1462867A (en) * 1973-06-25 1977-01-26 Dansk Ind Syndikat System for making sand moulds with one or more cores
EP0047507A1 (fr) * 1980-09-06 1982-03-17 Michael Achinger Machine à mouler pour fabriquer des moules de fonderie sans châssis
WO1993011892A2 (fr) * 1991-12-07 1993-06-24 Baxi Partnership Limited Coulage d'alliages de metaux legers
WO2000076696A1 (fr) * 1999-06-09 2000-12-21 Georg Fischer Disa A/S Procede de coulee et moules multiples
US20020007931A1 (en) * 2000-07-17 2002-01-24 Crafton Scott P. Methods and apparatus for utilization of chills for casting
GB2372004A (en) * 2000-12-18 2002-08-14 Foseco Int A method of casting
US20020185250A1 (en) * 2001-06-11 2002-12-12 Shade Larry R. Casting of engine blocks

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101927338B (zh) * 2009-06-25 2012-11-07 广西玉柴机器股份有限公司 一种柴油机机体重力铸造方法
CN102632199A (zh) * 2012-03-09 2012-08-15 华东泰克西汽车铸造有限公司 高精度曲轴箱芯模组及其组装方法
CN106040988A (zh) * 2016-08-03 2016-10-26 日月重工股份有限公司 船用柴油机机体砂芯的生产方法

Also Published As

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