EP2923780A1 - Procédé et dispositif de production d'une pièce moulée métallique dotée d'un filetage intérieur et une telle pièce coulée - Google Patents

Procédé et dispositif de production d'une pièce moulée métallique dotée d'un filetage intérieur et une telle pièce coulée Download PDF

Info

Publication number
EP2923780A1
EP2923780A1 EP15401027.6A EP15401027A EP2923780A1 EP 2923780 A1 EP2923780 A1 EP 2923780A1 EP 15401027 A EP15401027 A EP 15401027A EP 2923780 A1 EP2923780 A1 EP 2923780A1
Authority
EP
European Patent Office
Prior art keywords
mold
casting
mold half
core
tool
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Withdrawn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
EP15401027.6A
Other languages
German (de)
English (en)
Inventor
Sebastian Gross
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP2923780A1 publication Critical patent/EP2923780A1/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
    • B22D17/2254—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies having screw-threaded die walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D25/00—Special casting characterised by the nature of the product
    • B22D25/02—Special casting characterised by the nature of the product by its peculiarity of shape; of works of art

Definitions

  • the invention relates to a method and a device for producing metallic threads having an internal thread, and to such castings.
  • the local device consists of two tool halves 102, 1066, which are formed by a threaded spindle 110 against each other movable.
  • a threaded core 103 is arranged, which is rotatable by rotation from a contact surface 105 of the tool half 102 in the normal direction of the contact surface 105 back and forth.
  • the second tool half 106 has a negative mold 108 into which the threaded core 103 can be received when this tool half 106 comes to lie with its contact surface 107 against the abutment surface 105 of the other tool half 102. In this position, as in FIG.
  • the negative mold 108 may be filled with flowable, heated zinc, so that by solidification of the heated zinc, the desired casting 101 is formed.
  • the second tool half 106 is moved away from the first tool half 102, while at the same time the thread core 103 is rotated out of the internal thread of the casting 101. After the thread core 103 has been completely unscrewed from the casting 101, this casting 101 falls out of the tool and can now be further processed.
  • the rotatable thread core requires a certain amount of play - air gap between the thread core and the tool half - in order to be able to move.
  • this game is sufficient that the heated zinc, if it is pressed under pressure into the negative mold penetrates into these columns, even if they are in the submillimeter range.
  • the flowable zinc is namely possible to penetrate even in columns of less than 0.01 mm.
  • the thread core is formed as a rotary core, wherein the gap also serves to guide the threaded core, the. The thread core can no longer or no longer be properly moved by penetrating and solidifying zinc in this gap.
  • a longitudinally divided threaded core is provided. This consists of several outer Segementen and an inner segment. If, after the casting of the metallic component, the inner segment is pulled out of the outer segments, they fall inwards, whereby the contour attached to the segments is removed in the form of the internal thread.
  • a significant impairment by contamination by flowable metal for example, between the contact surfaces of the individual segments, available. This makes it difficult to produce larger quantities of castings with acceptable tolerances, since solidified zinc between the contact surfaces of the individual segments change the dimensions.
  • knife edges are created on the segments. These are subject to high wear.
  • the separating seams in the contour can also have a negative effect on the function.
  • the folding cores, as the individual segments are also called, are also mechanically very expensive and therefore very expensive.
  • a technically or structurally simple design device is to be made available, which is characterized by low wear and high durability.
  • the method according to the invention should be able to be carried out in a simple manner, with as few moving parts as possible - especially in the two tool halves during the production of the castings - being intended for the device.
  • the casting is turned off from the thread core and not the thread core is unscrewed from the internal thread of the casting.
  • the casting produced is turned off in a simple manner by the arranged on one mold half threaded core.
  • the thread core is fixedly arranged on one mold half, without the need to take into account a game between the thread core and mold half, since the threaded core does not have to be unscrewed from the mold half.
  • a device according to the invention has no life impairments, which can occur due to penetrating into such a game liquid metal.
  • the at least one negative mold is filled with free-flowing, heated metal via a line system.
  • a line system By means of such a conduit system, it is possible in a simple manner to carry out the filling of the negative mold automatically.
  • a main channel is advantageously provided, which is in operative connection with filling channels for individual negative molds, so that the filling channels and thus the negative molds can be filled with flowable heated metal over the main channel.
  • care is taken, for example by means of a corresponding temperature control, that the flowable metal does not solidify.
  • the filling is carried out by means of a die-casting process.
  • a pressure casting method it is possible to produce the castings with the greatest possible dimensional accuracy and the best surface finish, since such die casting methods have proven to be particularly suitable for meeting these qualitative requirements for dimensional accuracy and surface quality.
  • a separate tool is used to remove the at least one casting from the thread core. This is after or during the process of the first and second mold half against each other until the first contact surface of the first mold half is separated from the second contact surface of the second mold half, preferably automatically transferred to an engaged position. In this engaged position, the tool can rotate the at least one casting from the thread core.
  • This makes it possible in a simple manner to remove the casting from the thread core, without having to arrange moving parts within a mold half.
  • it can be used on existing screwdriving tools, such as pneumatic screwdrivers or the like, which need only be integrated into the device. However, it is not necessary to integrate this tool in a mold half. Rather, it can be moved separately to its place of use for turning off the casting in a simple manner.
  • the method according to the invention is for removing the at least one casting of the thread core of this by means of an ejection mechanism in the normal direction of the first plant surface of the first tool half process until the at least one casting is spaced from the first plant surface. This ensures that the castings have no contact with the contact surface of the first mold half before the final demoulding or twisting off of the threaded core and thus can be removed from the mold without problems.
  • the two mold halves can be separated from each other after casting the castings in a simple manner, it can be provided, before closing the two tool halves against each other, with their contact surfaces come to rest on at least one of the contact surfaces to apply a release agent. As a result, a simple release of the two tool halves or an opening of the device after the casting process is ensured.
  • the finished castings are collected in a collection container.
  • the first and second tool half are mutually feasible, so that the first contact surface of the first mold half can come to rest on the second contact surface of the second mold half, in which case a threaded core is accommodated in the at least one negative mold.
  • the device according to the invention is characterized in that for removing the at least one casting from the thread core a separate tool is provided, which is designed for moving into an engagement position, in which the at least one casting by means of the tool from the threaded core is turned off.
  • existing, automated, motor-driven screwdriving tools such as, for example, pneumatic screwdrivers, electric motor-driven screwdrivers or the like, can be used, which only have to be integrated into the device.
  • pneumatic screwdrivers pneumatic screwdrivers
  • electric motor-driven screwdrivers or the like
  • the device according to the invention it is now possible that the number the moving parts within the tool, in particular within the individual mold halves, is minimized. As a result, the service life is significantly increased because no contamination by solidified metal can penetrate into gaps between movably arranged parts. As a result of this measure, the device according to the invention and the method according to the invention can be operated economically very efficiently.
  • the tool is designed for automated processes. With this configuration, it is possible in a simple manner to provide a very efficient series production of castings with internal threads, since not only the casting of the castings can be done automatically, but also the demolding of the castings from the thread cores.
  • the first and / or the second tool half of the device according to the invention has a line system which is designed to fill the at least one negative mold with flowable, heated metal.
  • the line system consists essentially of a main channel, which is in operative connection with filling channels for individual negative molds, so that via the main channel, the filling channels and thus the negative molds can be filled with flowable, heated metal.
  • care is taken, for example by means of a corresponding temperature control, that the flowable metal does not solidify.
  • the at least one thread core is stationary, in particular rotationally and non-displaceably, arranged on the first mold half.
  • the at least one thread core is arranged exchangeably on the first mold half. This makes it possible to produce castings, possibly in the same negative mold, with different internal threads with one and the same device.
  • the embodiment of the invention aims that the arranged on the second mold half negative mold is also interchangeable.
  • different negative forms for the production of different components can be provided with the same device. This makes it possible with the device according to the invention by replacing the negative mold to produce different castings.
  • an ejection mechanism is provided, by means of which the at least one thread core in the normal direction of the first contact surface of the first mold half is movable until the at least one casting is spaced from the first contact surface. This ensures that the castings have no contact with the contact surface of the first mold half before the final demoulding or twisting off of the threaded core and thus can be removed from the mold without problems.
  • castings with internal threads produced by the method described above or by means of the device described above should also be protected independently.
  • Such castings may be, for example, nuts, inserts, for example for encapsulation with plastic, or the like components.
  • the device consists essentially of a first mold half 2 and a second mold half 6.
  • first mold half 2 is in the present embodiment, a first threaded core 3 and a second threaded core 4 stationary, that is rotationally and non-displaceably arranged, wherein the respective thread core 3, 4 protrudes from a first contact surface 5 of the first mold half 2 in the normal direction.
  • second mold half 6 in contrast, negative molds 8, 9 for the production of various castings 1, 'arranged.
  • Both the thread cores 3, 4 and the negative molds 8, 9 in the individual mold halves 2, 3 are interchangeable, so different components different forms and different thread cores by different negative forms Internal thread for the components to be produced can be realized.
  • the device according to the invention is shown in a position in which the first contact surface 5 of the first mold half 2 rests against a second contact surface 7 of the second mold half 6. That is, the two tool halves 2, 6 are already moved against each other in such a way that the two bearing surfaces 5, 7 abut each other, wherein the threaded cores 3, 4 are received in the female molds 8, 9.
  • the negative molds 8 and 9 form, together with the threaded cores received therein, the negative molds for the components 1.1 'to be produced.
  • the two mold halves (2, 6) can be separated from one another after the casting of the castings (1, 1 ') in a simple manner, it can be provided before the two mold halves (2, 6) are closed against each other, with their Contact surfaces (5, 7) come to rest, on at least one of the contact surfaces (5, 7) to apply a release agent. As a result, a simple release of the two tool halves (2, 6) or an opening of the device after the casting process is ensured.
  • conduit system which consists of a main channel, not shown here, which is in operative connection with filling channels 10 for the individual negative molds 8, 9, with flowable, heated metal, in the present embodiment, zinc filled.
  • the result for the first mold half 2 is the arrangement as shown in FIG. 4 is shown.
  • the first contact surface 5 of the first mold half 2 is substantially free, with the finished components 1, 1 'being arranged on the threaded cores 3, 4.
  • a screwing tool is brought into engagement with the components 1, 1'.
  • the components 1, 1' can now be turned off from the threaded cores 3, 4 in a simple manner by means of the screwing tool.
  • the so turned off components 1, 1 ' can be subsequently collected in a collection container, not shown here for further processing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
EP15401027.6A 2014-03-24 2015-03-24 Procédé et dispositif de production d'une pièce moulée métallique dotée d'un filetage intérieur et une telle pièce coulée Withdrawn EP2923780A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014104025.2A DE102014104025A1 (de) 2014-03-24 2014-03-24 Verfahren und Vorrichtung zum Herstellen von ein Innengewinde aufweisenden metallischen Gussteilen sowie derartige Gussteile

Publications (1)

Publication Number Publication Date
EP2923780A1 true EP2923780A1 (fr) 2015-09-30

Family

ID=52991675

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15401027.6A Withdrawn EP2923780A1 (fr) 2014-03-24 2015-03-24 Procédé et dispositif de production d'une pièce moulée métallique dotée d'un filetage intérieur et une telle pièce coulée

Country Status (2)

Country Link
EP (1) EP2923780A1 (fr)
DE (1) DE102014104025A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3178626A1 (fr) * 2015-12-10 2017-06-14 Siemens Aktiengesellschaft Procédé de fabrication d'une pièce usinée dotée d'un trou fileté

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115366352B (zh) * 2022-08-11 2023-05-05 武汉联塑精密模具有限公司 一种内外螺纹自动脱模模具

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020164393A1 (en) * 2001-05-07 2002-11-07 Precise Technology, Inc. Mold unscrewing mechanism for making threaded articles
DE202004016970U1 (de) * 2004-11-01 2006-03-09 Konstruktionsbüro Hein GmbH Vorrichtung zur Herstellung eines Aufnahmeelementes sowie eine Formspindel und Aufnahmeelement
DE102011010442A1 (de) * 2011-02-04 2012-08-09 Thomas Meister Gewindekernausschraubvorrichtung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD84472A1 (de) * 1970-01-09 1971-09-12 Kurt Zenker Verfahren und Vorrichtung zum Entformen
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
DE29619774U1 (de) * 1996-11-14 1997-03-06 Cramer Thomas Dipl Ing Handhabungsvorrichtung
DE102009060997A1 (de) * 2008-10-28 2010-09-02 Ksm Castings Gmbh Vorrichtung zum Druckgießen, die Verwendung einer solchen Vorrichtung und ein Verfahren zum Druckgießen
DE202011004502U1 (de) * 2011-03-25 2011-06-09 Desoi GmbH, 36148 Antriebsvorrichtung für Gewindekerne von Spritzgießwerkzeugen, Druckgussformen und dergleichen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020164393A1 (en) * 2001-05-07 2002-11-07 Precise Technology, Inc. Mold unscrewing mechanism for making threaded articles
DE202004016970U1 (de) * 2004-11-01 2006-03-09 Konstruktionsbüro Hein GmbH Vorrichtung zur Herstellung eines Aufnahmeelementes sowie eine Formspindel und Aufnahmeelement
DE102011010442A1 (de) * 2011-02-04 2012-08-09 Thomas Meister Gewindekernausschraubvorrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3178626A1 (fr) * 2015-12-10 2017-06-14 Siemens Aktiengesellschaft Procédé de fabrication d'une pièce usinée dotée d'un trou fileté

Also Published As

Publication number Publication date
DE102014104025A1 (de) 2015-09-24

Similar Documents

Publication Publication Date Title
DE3639313C2 (fr)
CH712554A1 (de) Spritzgusswerkzeug mit justierbarer Kernzentrierungseinrichtung.
DE1677098C3 (de) Vorrichtung zur Herstellung von Schmiedestücken
DE102014001080A1 (de) System zum Spritzgießen und ein dazugehöriges Verfahren
EP1075919A2 (fr) Procédé et appareil pour ouvrir ou fermer les moules d'une machine de traitement de matière plastique
EP2923780A1 (fr) Procédé et dispositif de production d'une pièce moulée métallique dotée d'un filetage intérieur et une telle pièce coulée
DE102011083268B4 (de) Formeinsatzanordnung und Verfahren zum Gießen
DE3327258C2 (fr)
DE1552182C3 (de) Vorrichtung zum Radialpressen von Verzahnungen
EP0037485A1 (fr) Presse à filer les métaux avec un dispositif monté sur le conteneur pour séparer le culot et pour échanger les matrices
DE202008000645U1 (de) Vorrichtung zum Zahnradschleifen
DE3152045A1 (en) Indirect metal extruding process
DE102007026985B4 (de) Vorrichtung zum automatischen Ankuppeln eines Gießlöffels
WO2012131058A1 (fr) Dispositif d'accouplement conçu pour un moule négatif de rigole et dispositif pour produire des parties fond de puits
DE102006019168A1 (de) Verfahren und Vorrichtung zum Spritzgießen
EP0868954B1 (fr) Dispositif et méthode de fabrication d'une pièce coulée avec insert
EP1345715B1 (fr) Presse a forger dotee d'un dispositif de reglage situe cote matrice
DE2325949C3 (de) Gewindekern für eine SpritzgieBvorr ich tu ng zum Herstellen eines mit einem Innen-Gewinde versehenen Formteils
DE102013111719B4 (de) Werkzeug und Verfahren zur Trennung eines Überlaufbutzens
EP2694261B1 (fr) Dispositif pour relier deux parties d'un moule négatif pour produire des parties de fond de puits en béton
DE102006000949B4 (de) Spritzgussvorrichtung bzw. Spritzgussverfahren zum Herstellen eines Spritzguss-Formteils mit einem seitlich von einer Formteilwandung abstehenden Rohr
AT520585B1 (de) Form
WO2017148469A1 (fr) Moule de coulée et procédé de positionnement et de démoulage d'un noyau métallique à l'intérieur du moule de coulée.
DE3535594C2 (fr)
DE3735735A1 (de) Verfahren und vorrichtung zum druckgiessen von gussteilen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

17P Request for examination filed

Effective date: 20160330

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

17Q First examination report despatched

Effective date: 20171212

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20180424