EP0652062B1 - Boíte noyau pour la fabrication des noyaux pour la production des corps creux - Google Patents

Boíte noyau pour la fabrication des noyaux pour la production des corps creux Download PDF

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Publication number
EP0652062B1
EP0652062B1 EP94115356A EP94115356A EP0652062B1 EP 0652062 B1 EP0652062 B1 EP 0652062B1 EP 94115356 A EP94115356 A EP 94115356A EP 94115356 A EP94115356 A EP 94115356A EP 0652062 B1 EP0652062 B1 EP 0652062B1
Authority
EP
European Patent Office
Prior art keywords
core
core box
synthetic resin
lip
shell shape
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.)
Expired - Lifetime
Application number
EP94115356A
Other languages
German (de)
English (en)
Other versions
EP0652062A1 (fr
Inventor
Friedrich Seibertz
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.)
Modellbau Friedrich Seibertz GmbH
Original Assignee
Modellbau Friedrich Seibertz 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 Modellbau Friedrich Seibertz GmbH filed Critical Modellbau Friedrich Seibertz GmbH
Publication of EP0652062A1 publication Critical patent/EP0652062A1/fr
Application granted granted Critical
Publication of EP0652062B1 publication Critical patent/EP0652062B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B22C7/062—Sealing means

Definitions

  • the invention relates to a core box for production of cores for the production of hollow bodies according to the preamble of claim 1.
  • the two shell shapes of the core box described above thus form one of two halves, namely the Upper and lower box, existing shell shape, which, when the shell shapes have moved together, the cavity creates.
  • the shape of this cavity has that Contour of the core body to be produced later with the core box.
  • this cavity becomes then filled up with a mixture of sand and synthetic resin and by a preferably gaseous hardener for reaction brought. After a certain curing time arises then a solid core body, which after opening the two Shell shapes can be removed. This core body then serves for the production of castings with complicated interior and Outer contours.
  • deburred core bodies still have to be removed be immersed in an immersion bath, since the deburring destroyed surface in the ridge area restored must become.
  • additional operations with the corresponding disadvantages must be carried out.
  • the invention has for its object a core box for the production of cores for the production of hollow bodies to create, in which no elaborate postprocessing and Post-treatments of the cores produced in the core box or Core bodies are required more.
  • the elastic lip with the protrusion can both in the upper than also be provided in the lower box of the core box.
  • Each elastic lip preferably consists of a suitable one Synthetic resin.
  • each recess or lip has one dovetail section remote from the dividing edge, then the dovetail section of the lip with the correspondingly shaped dovetail section of the recess is engaged.
  • the Formation of burrs is prevented even if the core boxes have a longer service life. This eliminates the entry in connection with the core boxes according to the state of the art complex post-processing or post-processing, which leads to considerable cost savings.
  • DE-C-1 141 751 shows a core box with shell shapes, which are divided into two, namely a basic body and a a sealing lip attached to this base body.
  • shell shapes which are divided into two, namely a basic body and a a sealing lip attached to this base body.
  • the sealing lips provided there over those surfaces of the base body of the shell shapes, on which the sealing lips are arranged.
  • the shell shapes are moved together, they are related sections easily displaceable on the base bodies of the shell shapes the sealing lips in contact with each other; the corresponding Sections of the sealing lips are against each other pressed, none of these pressed against each other Sections immediately through the in the body of the Shell shapes for the recesses provided for the sealing lips would be led.
  • the desired one with the opposing pressure accompanying deformation of the sealing lips to design an inwardly projecting bead thus largely uncontrolled, which leads to irregularities of the core produced, which in turn leads to the The quality of the products made with the core is impaired becomes.
  • a core box according to the invention as shown in a sectional view shown in Figures 1 and 2 has two Shell shapes 1, 2, of which the lower in the figures Shell shape 1, the lower case and the upper shell shape 2 forms the top box.
  • the two are in FIG Shell shapes 1, 2 in a spaced apart position, while in Figure 2 in the division level 3 of the core box abut each other.
  • a cavity 4 In the position shown in Figure 2 form the two shell shapes 1, 2 of the core box a cavity 4, the contour of which is that of a core body corresponds to that used for the production of castings becomes.
  • the lower shell shape 1 has an outer base body 5, which is preferably made of aluminum.
  • the inner contour of the outer base body 5 is roughly on the outer contour of the adapted to the core box to be manufactured core body.
  • On the inner surface of the outer base body 5 is an abrasion-resistant Resin layer 6 is provided, the inner contour the outer contour of the core body to be produced with the core box corresponds.
  • Near the inner dividing edge 7 of the lower shell shape 1 is the abrasion-resistant synthetic resin layer 6 designed with a recess 8.
  • the recess 8 runs over the entire inner dividing edge 7 of the abrasion-resistant Resin layer 6 and has at its dividing edge distant or lower end a dovetail section 9.
  • the elastic is in the circumferential direction of the lower shell shape 1 Lip 10 with its dovetail end over the abrasion-resistant synthetic resin layer 6. That is, the elastic Lip 10 has an overhang 12.
  • the upper shell shape 2 also has an outer base body 13, which is preferably made of aluminum.
  • the Inner contour of the outer base body 13 corresponds roughly to that Outer contour of the core body to be produced in the core box.
  • On the inner surface of the outer body 13 is an abrasion-resistant Resin layer 14 applied, the inner contour the outer contour of the one to be produced in the core box Core body corresponds.
  • the recess 16 is on their upper or parting edge distant in Figures 1 and 2 End section a dovetail section 17, the shape of the dovetail section 18 a lip made of an elastic material 19 corresponds to the abrasion-resistant in the recess 16 Synthetic resin layer 14 of the upper shell shape 2 is arranged.
  • the free end face of the elastic lip 19 of the upper Shell shape 2 is aligned with the corresponding end face of the abrasion-resistant synthetic resin layer 14 of the upper shell shape 2, i.e., the elastic lip 19 of the upper shell shape 2 has no protrusion.
  • a core soul has the same contour like the core body to be manufactured in the core box, they but is made of a stronger material.
  • the core soul is placed in a pouring tray, the pouring tray corresponds to a section of the contour of the core soul, however consists of inferior materials.
  • a silicone strap with a profile similar to that of the recess 16 corresponds to the upper shell shape 2 to the core soul placed and using an adhesive on the pouring base attached.
  • the inside contour is rough the outer contour of the relevant section of the core soul adapted outer base body 13, which is preferably made of aluminum exists, placed on the prepared pouring base.
  • the wear-resistant is created Synthetic resin layer 14, the inner contour of which The outer contour of the core core and thus that in the core box core body to be manufactured is adapted.
  • the pouring base is removed, the core soul remains in the upper shell shape 2.
  • Another one Silicone tape is placed around the core soul and by means of a Glue attached to the newly created upper shell shape 2.
  • the outer base body 5 becomes the lower shell shape 1, whose inner contour roughly matches the outer contour of the core core is adapted to the upper shell shape 2 brought.
  • the wear-resistant Synthetic resin layer 6 of the lower shell shape 2 the inner contour is adapted to the outer contour of the core soul.
  • the lower shell shape becomes 1 removed from the upper shell shape 2. That in the lower one Shell mold 1 arranged silicone tape is removed so that the lower shell shape 2 or the abrasion-resistant synthetic resin layer 6 has the recess 8. After that, the bottom one Shell shape 1 and the upper shell shape 2 merged again, being between the lower 1 and the upper shell shape 2 a spacer is inserted, the dimension of which in the circumferential direction the core box of that of the supernatant 12 corresponds to the lip 10.
  • the core box can now be used to manufacture core bodies be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Claims (3)

  1. Boíte à noyaux pour la production de noyaux pour la fabrication de corps creux, comprenant deux parties de moule (1, 2) qui présentent chacune un corps de base (5, 13) extérieur sur la surface intérieure duquel est appliquée une couche de résine synthétique résistante à l'usure (6, 14) et qui peuvent être appliquées l'une contre l'autre dans un plan de joint (3) de la boíte à noyaux en définissant une cavité (4) qui correspond au corps de noyau, caractérisée par le fait que les couches de résine synthétique (6, 14) des deux parties de moule (1, 2), dans la région de leurs arêtes de séparation (7, 15) présentent chacune un évidement (8, 16) dans lequel est disposée une lèvre (10, 19) élastique, la lèvre élastique (10) de l'une des parties de moule (1) étant en saillie par rapport à la couche de résine synthétique résistante à l'usure (6) de ladite partie de moule (1) et la surface d'extrémité libre de la lèvre élastique (19) de l'autre partie de moule (2) affleurant avec la surface d'extrémité correspondante de la couche de résine synthétique résistante à l'usure (6) de l'autre partie de moule (2).
  2. Boíte à noyaux selon la revendication 1, dans laquelle chaque lèvre élastique (10, 19) est réalisée en une résine synthétique appropriée.
  3. Boíte à noyaux selon la revendication 1 ou 2, dans laquelle chaque évidement (8, 16) et chaque lèvre (10, 19) comporte une partie en queue d'aronde (9, 17 et 11, 18) éloignée des arêtes de séparation.
EP94115356A 1993-10-13 1994-09-29 Boíte noyau pour la fabrication des noyaux pour la production des corps creux Expired - Lifetime EP0652062B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9315456U 1993-10-13
DE9315456U DE9315456U1 (de) 1993-10-13 1993-10-13 Kernkasten zur Erzeugung von Kernen für die Herstellung von Hohlkörpern

Publications (2)

Publication Number Publication Date
EP0652062A1 EP0652062A1 (fr) 1995-05-10
EP0652062B1 true EP0652062B1 (fr) 1999-04-28

Family

ID=6899249

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94115356A Expired - Lifetime EP0652062B1 (fr) 1993-10-13 1994-09-29 Boíte noyau pour la fabrication des noyaux pour la production des corps creux

Country Status (2)

Country Link
EP (1) EP0652062B1 (fr)
DE (2) DE9315456U1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5660948A (en) * 1995-09-26 1997-08-26 Valence Technology, Inc. Lithium ion electrochemical cell
CN106825403A (zh) * 2017-01-16 2017-06-13 共享装备股份有限公司 一种铸造用树脂木质一体芯盒及其制作方法
CN110039010B (zh) * 2019-05-30 2021-04-20 大连金河铸造有限公司 复杂薄壁芯造芯方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1141751B (de) * 1957-02-16 1962-12-27 J D Wehrenbold & Sohn G M B H Blaskernkasten oder Schiesskernkasten
NL7810752A (nl) * 1977-11-04 1979-05-08 Dansk Ind Syndikat Kernbak.
DE3028207C2 (de) * 1980-07-25 1983-11-10 Daimler-Benz Ag, 7000 Stuttgart Verfahren zum Herstellen einer Kernkastenabdichtung

Also Published As

Publication number Publication date
DE9315456U1 (de) 1995-02-09
DE59408166D1 (de) 1999-06-02
EP0652062A1 (fr) 1995-05-10

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