DE102006017922A1 - Mold block for serial casting of workpieces - Google Patents

Mold block for serial casting of workpieces

Info

Publication number
DE102006017922A1
DE102006017922A1 DE200610017922 DE102006017922A DE102006017922A1 DE 102006017922 A1 DE102006017922 A1 DE 102006017922A1 DE 200610017922 DE200610017922 DE 200610017922 DE 102006017922 A DE102006017922 A DE 102006017922A DE 102006017922 A1 DE102006017922 A1 DE 102006017922A1
Authority
DE
Germany
Prior art keywords
mold
block
molding
parts
molding block
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.)
Withdrawn
Application number
DE200610017922
Other languages
German (de)
Inventor
Xaver Stemmer
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.)
Audi AG
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
Priority to DE200610017922 priority Critical patent/DE102006017922A1/en
Publication of DE102006017922A1 publication Critical patent/DE102006017922A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/10Cores; Manufacture or installation of cores
    • B22C9/103Multipart cores
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/02Sand moulds or like moulds for shaped castings

Abstract

The invention relates to a molding block of a mold series consisting of a plurality of serially arranged mold blocks for the series casting vn workpieces, in particular combustion engine components, wherein adjacent mold blocks complement each other to a lost shape with at least one of the formation of a workpiece mold cavity. It is provided that at least one of the mold blocks (1) consists of several, separate mold block parts (3, 4, 5, 6, 28, 43, 44, 54, 66) is composed.
Furthermore, the invention relates to a corresponding use and a corresponding manufacturing method of the molding block.

Description

  • The The invention relates to a molding block of one of a plurality of serially arranged mold blocks existing mold string for serial casting of workpieces, in particular combustion engine components, with adjacent ones Mold blocks too a lost form with at least one of the formation of a workpiece serving Complete the mold cavity.
  • One such mold block for use in a boxless molding line is known. In this molding plant, mold blocks are produced sequentially and arranged in series, with the particular horizontally extending Mold strand for the Serial casting yields. The mold blocks are designed so that each of the beginning of the mold string opposite rear side a mold block and the front of the adjoining mold block of the mold string to form a mold. The resulting Shapes are lost forms, with the mold blocks mostly made of a mineral Granules and a binder are made. Are the mold blocks for Example created at a fixed station, so each mold block attached after production to the end of the mold string and the Mold strand 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 by the casting process resulting temperature destroyed will and then disintegrate the shapes. Is not this or only partially the case, so are the mold blocks on a another, lying in the feed direction behind the casting station station mechanically destroyed and the casting taken. In a further processing process arise from the castings for example, by reworking, for example, excess material the workpieces are removed. Will with a stationary Form strand worked, the individual stations are accordingly postponed. The insertion of the blocks is done, for example, with an automatically operating insertion device and the series casting through a potting device, so that the production of castings on the boxless molding plant is very inexpensive. The construction of the forms made of two adjacent one-piece mold blocks The automation quite simple, limits the ability to create more complex castings however one.
  • at the mold blocks of the invention Mold strand is at least one of the mold blocks of several, separate Molded block parts assembled. Such a composite molding block allows to create more complex castings on a boxless molding line. The different shape block parts can depending on the required imaging accuracy a surface section the casting are made individually.
  • To a development of the invention is provided that at least two of the mold block parts of the same mold block horizontally next to each other are arranged transversely to the orientation of the mold string. The mold block parts can be arranged directly adjacent and, for example, the part completely form the mold cavity corresponding to the corresponding mold block assigned. The horizontally juxtaposed shape block parts can but also sidewalls form the mold block, between which further mold block parts or Parts of other mold block parts are arranged. The horizontal arranged side by side blocks form, for example the end portions of the mold cavity.
  • Further It may be advantageous if at least two of the mold block parts of the same mold block in succession along the orientation of the mold string are formed. Such a composition of the molding block from mold block parts can be advantageous in a workpiece shape, which can not be realized by a two-part form.
  • It may be advantageous if at least one of the mold block parts over at least another of the mold block parts of the same mold block arranged is.
  • To a development of the invention is provided that at least two of the mold block parts form fit are connected. A positive connection between the mold block parts increases the stability of the individual Mold blocks that work easier after assembly leaves. If the form fit results in a sufficiently inherently stable shape block, so this can be put together separately and then on attached the end of the mold string become. The positive connection can during the subsequent casting process a resulting casting pressure counteract and stability of the mold block during the casting process guarantee.
  • It is advantageous if at least two of the mold block parts of the same Form block in a transverse to the orientation of the mold string Direction positive are connected. In a form fit across the alignment of the mold string in particular, the component of the casting pressure arising during casting counteracted, not by the mass of the mold block surrounding mold blocks the mold string can be compensated.
  • To a development of the invention is provided that at least two of the mold block parts of the same mold block in a along the Orientation of the mold strand extending direction positively connected are. The positive engagement of the mold block parts along the orientation of the mold string stabilizes the molding block composed of molding block parts in this direction so that the mold blocks are assembled in a first step and subsequently can be added to the end of the mold string.
  • In addition is provided that the mold block parts of at least one mold block vertically by weight of the upper mold block part and / or a Additional weight non-positive are connected. With one above the other arranged mold block parts may additionally or alternatively to a positive connection in the vertical direction, a traction by weight the Holding the mold block together. Here, the weight of the upper Mold block part and / or an additional weight, for example, on the upper mold block part is placed, are used.
  • To a development of the invention is provided that adjacent mold blocks in a direction transverse to the orientation of the mold string form-fitting are connected. The positive connection can for example by pins on the front of the mold block are guaranteed, the corresponding in Recesses of the adjacent mold block engage, so that the the mold forming blocks be aligned exactly and get a guide at the feed of Form strand results.
  • Further it may be advantageous if adjacent mold blocks, in particular in terms of their shape are different. A different one Design of adjacent blocks results, for example, if the series casting in alternation at least two different mold cavities be poured out. It can different workpieces be formed or the mold cavity periodically alternately aligned, for example, a workpiece to form with optimized space utilization.
  • To a development of the invention is provided that at least one of the mold block parts of the mold block at least one further mold block is at least partially assigned. A strict assignment of Form block parts to one of the Formblö bridge is not absolutely necessary, so individual mold block parts over several mold blocks can extend.
  • To a development of the invention is provided that in at least one of the mold blocks is at least one associated with him only mold cavity. Through a such another mold cavity, it is possible in a mold at least two in alignment of the mold string arranged one behind the other workpieces to pour.
  • Further For example, it may be advantageous if each of the mold block parts forms a cavity is. Especially for workpieces with complex structure, multiple mold cavity forming mold block parts needed making it cheap is to keep the total number of mold block parts low, that each of the mold block parts is cavity-forming.
  • Preferably consist of mold block parts in particular compacted sand and in particular temperaturunbeständigem Binder. This combination of materials is lost forms preferred because of these inexpensive materials stable Molds produced by the high temperature during the casting process destroyed become.
  • Especially is provided that adjacent mold blocks held together by adhesion become. In the direction of the strand of form, the mass of the strung together ensures mold blocks for one Traction arising in the direction of the mold string casting pressure counteracts.
  • In addition, each falls Use of a molding block according to the invention for the production of workpieces, in particular combustion engine components in the scope of the associated claims.
  • The The invention further relates to a method for producing a molding block one of several serially arranged mold blocks existing mold string for the serial casting of workpieces, in particular Combustion engine components, wherein adjacent mold blocks to a lost form with at least one of the formation of a workpiece serving Complete the mold cavity. It is provided that at least one of the mold blocks a plurality of separate mold block parts is assembled.
  • Finally is provided that the mold block parts are assembled so that they form a coherent by form and / or adhesion Form block result. For this purpose, the individual form block parts are successively so put together, that with the insertion of the last mold block part all mold block parts connected so that they withstand the casting pressure arising during casting can.
  • The invention is described below in a Embodiment explained in more detail with reference to the accompanying drawings. Show it:
  • 1 assembling a mold block subassembly forming a bottom of a mold block,
  • 2 a pre-assembly of sub-group elements of a formed as an intermediate core mold block part,
  • 3 a retraction of the formed as an intermediate core mold block part,
  • 4 a pivoting in of two formed as front side cores form block parts,
  • 5 a pre-assembly of sub-group elements of a mold block formed as a separating core,
  • 6 a retraction of the mold block part designed as a separating core,
  • 7 a pre-assembly of sub-group elements of a formed as a lid molding block part,
  • 8th a placement of the formed as a lid mold block part on the mold block and
  • 9 a completely assembled mold block for serial casting of two crankcases.
  • The 1 to 9 show the structure of a mold block 1 For a series casting of two crankcases for two-cylinder single-cylinder four-cylinder engines on a non-illustrated, boxless molding plant, in which a plurality of serially arranged mold blocks 1 form a mold string, not shown.
  • A single mold block 1 has a base in 1 shown ground 2 on, that of four mold block parts 3 . 4 . 5 . 6 is formed. The mold block parts 3 . 4 . 5 . 6 are aligned with their longitudinal axes in the direction of the mold string, not shown, and horizontally next to each other transversely to the orientation of the mold string (arrow 7 ) arranged one after the other. The mold block parts 3 . 4 . 5 . 6 each consist of one, the ground 2 of the mold block 1 forming floor area 8th . 9 . 10 . 11 and two in the direction of the mold string, not shown (arrow 7 ) spaced successively aligned molding portions 12 to 19 each having a cylindrical upper termination area 20 exhibit. The molding areas 12 . 13 . 14 . 15 together form a shape area 21 , the molding parts 16 . 17 . 18 . 19 together form a shape area 22 , wherein the molding areas 21 . 22 determine the shape of each crankcase of the two resulting during casting crankcase. In opposite side areas 23 . 24 of the soil 2 covering the floor areas 8th . 11 are assigned, there are depressions 25 and recesses 26 that in the figures only in the side area 24 are recognizable. Between the molding areas 21 . 22 is located at the composite molding block 1 immediately above the floor areas 8th . 9 . 10 . 11 one as intermediate core 27 trained mold block part 28 (please refer 3 ). The transverse to the longitudinal sides of the mold block parts 3 . 4 . 5 . 6 aligned intermediate cores 27 has a flat top 29 , two partially flat, partially formhohlraummitbildende end faces 30 . 31 and two, the molding areas 21 . 22 facing, also formhohlraummitbildende longitudinal side areas 32 . 33 on. On the mold area 21 facing longitudinal side area 32 are two subgroup elements 34 . 35 arranged (see 2 ). On the long side area 32 opposite longitudinal side area 33 of the intermediate core 27 There are two more subgroup elements 36 . 37 , At one of the top 29 opposite bottom 38 points the intermediate core 27 at the height of the side areas 31 . 32 one border area each 39 . 40 on. The 3 shows the installation position of the intermediate core 27 within the mold block 1 , The intermediate core 27 spans all form block parts 3 . 4 . 5 . 6 of the soil 2 and engages with the edge areas 39 . 40 its bottom 38 into the wells 25 the floor areas 8th . 11 , 4 shows the ground 2 and the intermediate core 27 together with two on the front sides 30 . 31 of the intermediate core 27 subsequent, as front side cores 41 . 42 trained mold block parts 43 . 44 , The frontal cores 41 . 42 exhibit on their undersides 45 . 46 undercuts 47 on, in which the recesses 26 the floor areas 8th . 11 grab and the frontal cores 41 . 42 with the ground 2 connect positively. The front ends 30 . 31 of the intermediate core 27 are inside pages 48 . 49 the frontal cores 41 . 42 facing, which are partially formmitbildend. At two of the bases 45 . 46 opposite tops 50 . 51 the frontal cores 41 . 42 There are several pins each 52 , In the direction of the mold string, not shown (arrow 7 ) behind the ground 2 and the side kernels 41 . 42 is immediately afterwards as a separation core 53 trained mold block part 54 , The transverse to the longitudinal sides of the mold block parts 3 . 4 . 5 . 6 aligned separating core 53 has a floor area 55 , two flat faces 56 . 57 and one, the molding area 22 facing, also formhohlraummitbildenden longitudinal side area 58 on which a subgroup element 59 is arranged (see 5 ). On one the long side area 58 opposite longitudinal side area 60 of the separating core 53 there is another subgroup element 61 , The long side area 60 and the subgroup element 61 form together with a not shown sequential form block the next mold cavity of the mold string. At one of the bottom area 55 opposite top 62 points the separating core 53 several cones 63 on. undercuts 64 in the ground area 55 and on the front sides 56 . 57 engage in corresponding structures of the front side cores 41 . 42 and the soil 2 and ensure a positive fit (see 6 ). The 7 shows the composition of one last, as a lid 65 trained form block part 66 with two subassembly elements 67 . 68 , where the in 7 illustrated lid 65 opposite its mounting position within the mold block 1 turned upside down by 180 °, so that its underside 69 with cylindrical shaped elements 70 to 77 of the lid 65 is recognizable. The subgroup element 67 surrounds the form elements 70 to 73 and the subgroup element 68 surrounds the form elements 74 to 77 , In the direction of the mold string, not shown (arrow 7 ) in front of the form elements 70 to 73 are located on the front of the lid 65 frustoconical cones 78 which are in recesses of the in alignment (arrow 7 ) arranged form block of the mold string, not shown, engage. Behind the form elements 74 to 77 on the bottom 69 there are recesses 79 and in the lateral edge areas 80 . 81 there are recesses 82 , Between the form elements 70 to 73 and the form elements 74 to 77 there is an elongated recess 83 , The 8th shows the position of the lid 65 trained form block part 66 within the mold block 1 , The cylindrical shape elements 70 to 77 rely on the cylindrical termination areas 20 the molding sections 12 to 19 the mold block parts 3 . 4 . 5 . 6 , The cones 52 the frontal cores 41 . 42 as well as the cones 63 of the separating core 53 engage positively in the recesses 79 . 82 as a lid 65 trained form block part 66 , The top 29 of the intermediate core 27 reaches into the recess 83 of the lid 65 and also forms a positive connection. 9 shows the completely assembled form block 1 who with his front 84 is brought to the back of another mold block, not shown, so that a shape is formed. The mold has in this embodiment two serving to form two crankcases, not shown, mold cavities, which in alignment of the mold string, not shown (arrow 7 ) lie one behind the other. The corresponding feeders of the form that are in the lid 65 of the mold block 1 are not shown in the figures.
  • This results in the following, five consecutive steps for mounting a mold block 1 for a series casting of two crankcases for in-line four-cylinder engines with only one mold: First (step 1 ) become the four shape block parts 3 . 4 . 5 . 6 transverse to the orientation of the mold string, not shown (arrow 7 ) pushed together (arrow 85 ), the bottom being 2 of the mold block 1 is formed (see 1 ). In a pre-assembly step, which is in 2 is shown, the subgroup elements 34 . 35 . 36 . 37 on the longitudinal side areas 32 . 33 of the intermediate core 27 positioned (arrow 86 ). Corresponding 3 (Step 2 ) becomes the pre-assembled intermediate core 27 between the two molding areas 21 . 22 to the bottom 2 retracted (arrow 87 ), with the border areas 39 . 40 of the intermediate core 27 in depressions 25 the floor areas 8th and 11 grab and ensure a form fit, the mold block parts 3 to 6 firmly connects. Subsequently, in a third assembly step, the front side cores 41 . 42 directly to the ground area 8th . 11 put on, with the rear handle 47 the frontal cores 41 . 42 in the recesses 26 the floor areas 8th . 11 grip and then in the direction of the end faces 30 . 31 of the intermediate core 27 pivoted in (arrow 88 ). At an in 5 Pre-assembly step shown are the sub-group elements 59 . 61 on the longitudinal side areas 58 . 60 mounted (arrow 89 ). Subsequently, in the fourth assembly step, a preassembled separating core 53 at the end of the molding area 22 moved up (arrow 90 ), wherein the separating core 53 with undercuts 64 in structures of the soil 2 and the frontal cores 41 . 42 grabs and the mold block 1 separated by a follow-up block not shown. For pre-assembly of the lid 65 become the subgroup elements 67 . 68 so on the bottom 69 of the lid 65 mounted (arrow 91 ) that these are the form elements 70 to 77 of the lid 65 embrace. Subsequently, in a fifth assembly step, the lid 65 as the last form block part 66 of the mold block 1 on the tops 50 . 51 the frontal cores 41 . 42 and the tops 29 . 62 of the intermediate core 27 and the separating core 53 put on (arrow 92 ). The pins engage 52 and 63 as well as the top 29 of the intermediate core 27 in the recesses 79 . 82 and 83 of the lid 65 , The lid 65 ensures a positive connection of all other form block parts 3 . 4 . 5 . 6 . 28 . 43 . 44 . 54 , wherein he himself horizontally also positively and vertically by its weight force fit with the rest of the mold block 1 connected is.
  • The 9 shows the completely assembled molding block 1 for the series casting of two crankcases for inline four-cylinder engines with only one mold on a boxless molding line, not shown. On the front of the mold strand, not shown facing 83 of the lid 65 there are frustoconical cones 78 , which engage in recesses of a previous mold block of the mold string, not shown, so that the two mold blocks 1 be precisely aligned and together a tailor-made shape 84 form.
  • 1
    mold block
    2
    ground
    3
    Mold block part
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    Mold block part
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    Mold block part
    6
    Mold block part
    7
    arrow
    8th
    floor area
    9
    floor area
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    floor area
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    floor area
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    Molding section
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    Molding section
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    Molding section
    15
    Molding section
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    Molding section
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    Molding section
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    Molding section
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    Molding section
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    termination region
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    shape area
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    shape area
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    page range
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    page range
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    deepening
    26
    recess
    27
    between the core
    28
    Mold block part
    29
    top
    30
    front
    31
    front
    32
    Longitudinal side region
    33
    Longitudinal side region
    34
    Subset element
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    Subset element
    36
    Subset element
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    Subset element
    38
    bottom
    39
    border area
    40
    border area
    41
    Front side core
    42
    Front side core
    43
    Mold block part
    44
    Mold block part
    45
    bottom
    46
    bottom
    47
    rear grip
    48
    inside
    49
    inside
    50
    top
    51
    top
    52
    spigot
    53
    separating core
    54
    Mold block part
    55
    floor area
    56
    front
    57
    front
    58
    Longitudinal side region
    59
    Subset element
    60
    Longitudinal side region
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    Subset element
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    top
    63
    spigot
    64
    rear grip
    65
    cover
    66
    Mold block part
    67
    Subset element
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    Subset element
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    bottom
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    forming element
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    forming element
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    forming element
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    forming element
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    forming element
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    forming element
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    forming element
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    forming element
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    spigot
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    recess
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    border area
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    border area
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    recess
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    recess
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    front
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    arrow
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Claims (18)

  1. 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 mold with at least one mold cavity forming a workpiece, characterized in that at least one of the mold blocks ( 1 ) of a plurality of separate mold block parts ( 3 . 4 . 5 . 6 . 28 . 43 . 44 . 54 . 66 ) is composed.
  2. Molding block according to claim 1, characterized in that at least two of the mold block parts ( 3 . 4 . 5 . 6 . 28 . 43 . 44 . 54 . 66 ) of the same shape block ( 1 ) are arranged horizontally next to each other transversely to the orientation of the mold string.
  3. Molding block according to one of the preceding claims, characterized in that at least two of the mold block parts ( 3 . 4 . 5 . 6 . 28 . 43 . 44 . 54 . 66 ) of the same shape block ( 1 ) are arranged one behind the other along the orientation of the mold string.
  4. Molding block according to one of the preceding claims, characterized in that at least one of the mold block parts ( 3 . 4 . 5 . 6 . 28 . 43 . 44 . 54 . 66 ) over at least one other of the mold block parts ( 3 . 4 . 5 . 6 . 28 . 43 . 44 . 54 . 66 ) of the same shape block ( 1 ) is arranged.
  5. Molding block according to one of the preceding claims, characterized in that at least two of the mold block parts ( 3 . 4 . 5 . 6 . 28 . 43 . 44 . 54 . 66 ) are positively connected.
  6. Molding block according to one of the preceding claims, characterized in that at least two of the mold block parts ( 3 . 4 . 5 . 6 . 28 . 43 . 44 . 54 . 66 ) of the same shape block ( 1 ) are positively connected in a direction transverse to the orientation of the mold strand.
  7. Molding block according to one of the preceding claims, characterized in that at least two of the mold block parts ( 3 . 4 . 5 . 6 . 28 . 43 . 44 . 54 . 66 ) of the same mold block ( 1 ) are positively connected in a direction along the orientation of the mold strand extending direction.
  8. Molding block according to one of the preceding claims, characterized in that the mold block parts ( 3 . 4 . 5 . 6 . 28 . 43 . 44 . 54 . 66 ) at least one molding block ( 1 ) vertically by weight of the upper mold block part ( 28 . 43 . 44 . 54 . 66 ) and / or an additional weight are positively connected.
  9. Molding block according to one of the preceding claims, characterized in that adjacent shaped blocks ( 1 ) are positively connected in a direction transverse to the orientation of the mold strand.
  10. Molding block according to one of the preceding claims, characterized in that adjacent shaped blocks ( 1 ) are formed differently in particular with respect to their shape.
  11. Molding block according to one of the preceding claims, characterized in that at least one of the mold block parts ( 3 . 4 . 5 . 6 . 28 . 43 . 44 . 54 . 66 ) of the molding block ( 1 ) at least one further molding block ( 1 ) is at least partially assigned.
  12. Molding block according to one of the preceding claims, characterized in that in at least one of the mold blocks ( 1 ) is at least one associated with him only mold cavity.
  13. Molding block according to one of the preceding claims, characterized in that each of the mold block parts ( 3 . 4 . 5 . 6 . 28 . 43 . 44 . 54 . 66 ) is cavity forming.
  14. Molding block according to one of the preceding claims, characterized in that the mold block parts ( 3 . 4 . 5 . 6 . 28 . 43 . 44 . 54 . 66 ) consist in particular compacted sand and in particular temperaturunbeständigem binder.
  15. Molding block according to one of the preceding claims, characterized in that adjacent shaped blocks ( 1 ) are held together by adhesion.
  16. Use of a mold block according to one of claims 1 to 15 for the production of workpieces, in particular internal combustion engine components, in series casting.
  17. Process for producing a molding block of a from several serially arranged mold blocks existing mold string for the Serial casting of workpieces, in particular combustion engine components, with adjacent ones mold blocks to a lost form with at least one of the formation of a workpiece complement the serving cavity, characterized in that at least one of the mold blocks a plurality of separate mold block parts is assembled.
  18. Process for the preparation of a molding block according to Claim 17, characterized in that the mold block parts so be composed that they by form and / or adhesion a coherent one Form block result.
DE200610017922 2006-04-18 2006-04-18 Mold block for serial casting of workpieces Withdrawn DE102006017922A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE200610017922 DE102006017922A1 (en) 2006-04-18 2006-04-18 Mold block for serial casting of workpieces

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200610017922 DE102006017922A1 (en) 2006-04-18 2006-04-18 Mold block for serial casting of workpieces
PCT/EP2007/003282 WO2007121875A1 (en) 2006-04-18 2007-04-13 Moulding block for series-casting of workpieces

Publications (1)

Publication Number Publication Date
DE102006017922A1 true DE102006017922A1 (en) 2007-10-25

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DE200610017922 Withdrawn DE102006017922A1 (en) 2006-04-18 2006-04-18 Mold block for serial casting of workpieces

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DE (1) DE102006017922A1 (en)
WO (1) WO2007121875A1 (en)

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