EP0212459A2 - Outil pour la production de noyaux ou moules de sable non-divisés pour pièces moulées présentant un filetage - Google Patents

Outil pour la production de noyaux ou moules de sable non-divisés pour pièces moulées présentant un filetage Download PDF

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Publication number
EP0212459A2
EP0212459A2 EP86110900A EP86110900A EP0212459A2 EP 0212459 A2 EP0212459 A2 EP 0212459A2 EP 86110900 A EP86110900 A EP 86110900A EP 86110900 A EP86110900 A EP 86110900A EP 0212459 A2 EP0212459 A2 EP 0212459A2
Authority
EP
European Patent Office
Prior art keywords
thread
model
core
box
undivided
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Withdrawn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
EP86110900A
Other languages
German (de)
English (en)
Other versions
EP0212459A3 (fr
Inventor
Manfred Techniker Meier
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.)
ThyssenKrupp Technologies AG
Original Assignee
Thyssen Industrie 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 Thyssen Industrie AG filed Critical Thyssen Industrie AG
Publication of EP0212459A2 publication Critical patent/EP0212459A2/fr
Publication of EP0212459A3 publication Critical patent/EP0212459A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/22—Moulds for peculiarly-shaped castings

Definitions

  • the invention relates to a tool for producing undivided cores or molds from sand for castings which have a thread, with a thread-giving model with an external thread which can be inserted into a core or mold box.
  • the object of the invention is to design a tool of the type described in the introduction so that the thread-giving, undivided model part can be unscrewed from the freshly shot molding material without the thread depicted being deformed by the screwing process, with predetermined narrow tolerances of the thread on Casting can be adhered to.
  • the model has a threaded bore which is arranged coaxially to the external thread and the internal thread of which has the same pitch as the external thread, and in that a threaded pin assigned to the threaded bore and supported on the core or mold box is provided.
  • the thread-giving model can be unscrewed after the completion of the core or the shape without adversely affecting the thread depicted in the core or the shape, because the axial forces that occur are absorbed by the threaded pin.
  • the threaded pin also ensures perfect guidance of the thread-giving model when unscrewing. Only forces in the direction of the thread pitch act between the thread-giving model and the thread depicted in the core or the shape. However, these forces have little or no effect on the dimensional stability of the thread shown.
  • both the external thread and the internal thread can be the thread-forming part on the thread-giving model, so that castings with such a tool can be produced not only with an external thread but also with an internal thread. If the internal thread of the thread-giving model is the imaging part, the external thread is held in a threaded nut corresponding to the threaded pin and supported on the core or molding box.
  • the axial length of the Internal thread correspond at least to the axial length of the external thread.
  • the threaded pin can be releasably attached to the associated box, but it can also be formed in one piece with it.
  • the thread-giving model can have a handle or projections or recesses on its free end face for attaching a handle.
  • the device can be designed in such a way that the demolding of the core or the shape takes place in a machine-like manner in the machine.
  • the box or an external model surrounding the model should have at least one securing lug protruding into the core or mold space, which prevents the finished core from being carried along by the thread-giving model when it rotates.
  • a base 1 with an essentially circular base area belongs to the core box shown.
  • a threaded pin 2 is fastened in the center on the bottom 1, on which a threaded model 3 with an external thread 4 is screwed.
  • the model 3 has a central bore 5 with an internal thread 6, which corresponds to the thread of the threaded pin 2.
  • the external thread 4 and the internal thread 6 of the model 3 have the same pitch.
  • the outer model 7 On the floor 1 there is also an outer model 7 surrounding the model 3, which together with the model 3 forms the core space 8 to be filled with the molding material.
  • the outer model 7 has safety lugs 9 protruding into the core space 8.
  • the core space 8 which is open at the top, is covered in a conventional manner with a cover 10 which is supported on the outer model 7 and has a radial flange 11 which centrally surrounds the upper end of the thread-giving model 3.
  • a cover 10 which is supported on the outer model 7 and has a radial flange 11 which centrally surrounds the upper end of the thread-giving model 3.
  • shooting openings 12 for the injection of the molding material, in particular core sand.
  • blind holes 14 for attaching a handle 15 with which the model 3 can be screwed out of the core box.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
EP86110900A 1985-08-09 1986-08-07 Outil pour la production de noyaux ou moules de sable non-divisés pour pièces moulées présentant un filetage Withdrawn EP0212459A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853528589 DE3528589A1 (de) 1985-08-09 1985-08-09 Werkzeug zur herstellung von ungeteilten kernen oder formen aus sand fuer gussstuecke, die ein gewinde aufweisen
DE3528589 1985-08-09

Publications (2)

Publication Number Publication Date
EP0212459A2 true EP0212459A2 (fr) 1987-03-04
EP0212459A3 EP0212459A3 (fr) 1987-08-26

Family

ID=6278103

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86110900A Withdrawn EP0212459A3 (fr) 1985-08-09 1986-08-07 Outil pour la production de noyaux ou moules de sable non-divisés pour pièces moulées présentant un filetage

Country Status (2)

Country Link
EP (1) EP0212459A3 (fr)
DE (1) DE3528589A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996003237A1 (fr) * 1994-07-27 1996-02-08 Bitzer Kühlmaschinenbau Gmbh & Co. Kg Procede et dispositif de moulage pour la fabrication de pieces a contour exterieur symetriquement helicoidal
US10737317B2 (en) 2015-12-09 2020-08-11 Kobe Steel, Ltd. Core molding method and core molding device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015000370B4 (de) 2015-01-20 2019-10-17 Viessmann Werke Gmbh & Co Kg Verfahren zur Herstellung eines mit einem Gewindegang versehenen Körpers

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126592A (en) * 1964-03-31 Machine foe making tedieaded molds
DE1508723B1 (de) * 1966-09-24 1969-09-04 Svenska Rotor Maskiner Ab Formvorrichtung fuer die Herstellung von Gussformen fuer schraubenfoermige Koerper
DE2325949C3 (de) * 1973-05-22 1975-12-18 Georg 7320 Goeppingen Kick Gewindekern für eine SpritzgieBvorr ich tu ng zum Herstellen eines mit einem Innen-Gewinde versehenen Formteils
DE2634152C3 (de) * 1976-07-29 1979-04-19 Johannes 8641 Neuses Wuendsch Gießform für Gußstücke mit einem auszuformenden Gewinde

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996003237A1 (fr) * 1994-07-27 1996-02-08 Bitzer Kühlmaschinenbau Gmbh & Co. Kg Procede et dispositif de moulage pour la fabrication de pieces a contour exterieur symetriquement helicoidal
US5743321A (en) * 1994-07-27 1998-04-28 Bitzer Kuehlmaschinenbau Gmbh & Co. Kg Process for the production of parts with a spirally symmetrical outer contour
CN1046442C (zh) * 1994-07-27 1999-11-17 毕彻致冷机有限公司及两合公司 生产带有对称螺旋外形零件的方法和铸造装置
US10737317B2 (en) 2015-12-09 2020-08-11 Kobe Steel, Ltd. Core molding method and core molding device

Also Published As

Publication number Publication date
EP0212459A3 (fr) 1987-08-26
DE3528589A1 (de) 1987-02-19

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Inventor name: MEIER, MANFRED, TECHNIKER