EP2272606A1 - Tête atomisante pour l'application d'un agent séparateur sur la surface d'un moule - Google Patents

Tête atomisante pour l'application d'un agent séparateur sur la surface d'un moule Download PDF

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Publication number
EP2272606A1
EP2272606A1 EP10176909A EP10176909A EP2272606A1 EP 2272606 A1 EP2272606 A1 EP 2272606A1 EP 10176909 A EP10176909 A EP 10176909A EP 10176909 A EP10176909 A EP 10176909A EP 2272606 A1 EP2272606 A1 EP 2272606A1
Authority
EP
European Patent Office
Prior art keywords
nozzle
release agent
nozzle module
piston
head
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Withdrawn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
EP10176909A
Other languages
German (de)
English (en)
Inventor
Christoph Böhmer
Swen Schröder
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.)
Dipl-Ing Swen Schroder Engineering GmbH
Erich F Baurmann Pneumatik Hydraulik Industrieausruestungen
Original Assignee
Dipl-Ing Swen Schroder Engineering GmbH
Erich F Baurmann Pneumatik Hydraulik Industrieausruestungen
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 Dipl-Ing Swen Schroder Engineering GmbH, Erich F Baurmann Pneumatik Hydraulik Industrieausruestungen filed Critical Dipl-Ing Swen Schroder Engineering GmbH
Publication of EP2272606A1 publication Critical patent/EP2272606A1/fr
Withdrawn legal-status Critical Current

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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
    • B22D17/2007—Methods or apparatus for cleaning or lubricating moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3033—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head
    • B05B1/304—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve
    • B05B1/3046—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice
    • B05B1/306—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice the actuating means being a fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/14—Arrangements for preventing or controlling structural damage to spraying apparatus or its outlets, e.g. for breaking at desired places; Arrangements for handling or replacing damaged parts
    • B05B15/18—Arrangements for preventing or controlling structural damage to spraying apparatus or its outlets, e.g. for breaking at desired places; Arrangements for handling or replacing damaged parts for improving resistance to wear, e.g. inserts or coatings; for indicating wear; for handling or replacing worn parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
    • B05B7/0807—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets
    • B05B7/0815—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets with at least one gas jet intersecting a jet constituted by a liquid or a mixture containing a liquid for controlling the shape of the latter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/12—Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages
    • B05B7/1254—Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages the controlling means being fluid actuated
    • B05B7/1263—Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages the controlling means being fluid actuated pneumatically actuated

Definitions

  • the present invention relates to a nozzle head according to the preamble of claim 1 and a spray head with at least two nozzle heads according to the invention.
  • Nozzle heads of the above type are known and, for example, in the DE 32 49 545 C2 described.
  • the nozzle heads described in this document consist of a housing jacket, in which a processing space is formed, which communicates via a one-piece executed with the housing shell nozzle-like approach with a funnel-shaped opening.
  • a connection for the release agent to be sprayed is provided, which communicates with the processing space via an inlet opening.
  • a pneumatically actuable piston is provided, which protrudes with its side facing the funnel-shaped opening in a closed position in the approach, and closes the inlet opening for the release agent.
  • a disadvantage of this arrangement is that when promoting release agents, which may contain, for example, a combination of liquids and solids, due to the abrasive properties promoted by the solids rapid washing out of the formed in the housing shell, nozzle-shaped approach are favored can. By the abrasion and the increased tendency to corrosion of the material of the approach, the geometry of the nozzle is changed, which changes a change in the spray characteristics of the nozzle head and thus shortens the life of the component.
  • the approach for the promotion of liquids containing solids only limited suitability, since the approach can quickly clog with corresponding solids.
  • the approach In order to continue operating the nozzle head, the approach must first be cleaned, which greatly prolongs the cycle times for the production of series of die cast parts due to appropriate maintenance measures.
  • the release agent to be applied to the metallic permanent mold has the task of being able to more easily demould components and to protect the die from thermal or mechanical influences.
  • the release agents known in the art wet the surfaces of the die casting molds only in a range between about 150 ° C and about 250 ° C. During the removal of die-cast components, the die casting molds have a temperature of approx. 350 ° C. At these temperatures, there is a risk that the release agent evaporates. Therefore, the die casting molds must first be cooled to 150 ° C to 250 ° C. For cooling is known in the art, a mixture of release agent and water on the die to cool the temperature of the die to the appropriate value of 150 ° C to 250 ° C for wetting.
  • Another disadvantage of the necessary cooling is, on the one hand, that a relatively large temperature gradient arises on the walls of the die, which can lead to increased residual stresses in the material. In addition, it then becomes necessary to reheat the die to a processing temperature, which is associated with an increased energy requirement.
  • microspraying means that the total amount of release agent to be sprayed is reduced by a factor of up to 100 compared with the prior art, since the release agent can be sprayed undiluted or virtually undiluted onto the die casting mold.
  • a nozzle head the nozzle module is releasably secured in the housing shell.
  • the invention is based on the one hand on the basic idea that the nozzle module can be easily assembled or disassembled in the nozzle head, for example to replace it, if the nozzle module is washed out by the promotion of a release agent after some time and thereby the spray properties of the nozzle head have changed adversely.
  • An advantageous embodiment of the invention provides to control the delivery rate of the release agent by a suitable choice of the geometry of the nozzle module.
  • the pressure with which the release agent is introduced into the processing space can be used to control the flow rate per time. However, it is also possible to convey the release agent without pressure.
  • the promotion of the release agent can be done for example by the piston movement. If a larger delivery rate of the release agent of the funnel-shaped opening to be supplied, the diameter of the nozzle module or the injection volume enclosed by the nozzle module can be made larger. If a smaller flow rate per die casting cycle is subsequently to be fed to the funnel-shaped opening, the nozzle module can be replaced by another nozzle module, which surrounds a smaller injection volume or has a smaller exit diameter.
  • the diameter of the nozzle is advantageously between 0.1 and 5mm, more preferably between 0.5 and 3mm, and most preferably at 1.5mm.
  • the process pressure of the compressed air for conveying the release agent is between 0.1 and 25 bar, preferably 0.1 to 16 bar, more preferably 0.2 to 3 bar and in particular 0.5 bar.
  • the nozzle module is formed adaptable by selecting a suitable material to the release agent to be supplied.
  • the nozzle module can be easily replaced if a release agent is to be promoted, which contains a component which would favor, for example, the corrosion of the material of a nozzle body but has no effect on the material behavior of a nozzle head with a different material composition.
  • the material of the nozzle module is advantageously made of a wear-resistant material selected from a group comprising a ceramic, a stainless steel or a hardened steel, so that release agent can be used, which consists of a mixture of liquid and Foststoffen, by accelerating the Solids may cause abrasions if the materials are too soft. Because of the wear-resistant material, washing out by abrasion on the nozzle module is reduced or completely prevented by the acceleration of the solids.
  • the nozzle module be made entirely of the wear-resistant material. Rather, it is also possible to provide only the piston-facing surface of the nozzle module with a hardened surface or a coating. Further, it is possible to subject the material to various heat treatment known in the art in order to further increase its hardness.
  • the material from which the nozzle module is made, adversely affected can be prevented by the piston-facing surface of the nozzle module with a corresponding protective coating such as a TiN coating is provided.
  • the nozzle heads according to the invention in the spray head on a common manifold block can be mounted such that the nozzle heads via common ports each release agent or compressed air are supplied.
  • FIG. 1 shows a cross section through a nozzle head 1 according to the invention for use in a spray head 2 for applying and distributing release agent on pressure or injection molds.
  • the nozzle head 1 has a housing jacket 3, in which a processing space 4 is formed, which has a nozzle module 7 arranged between a funnel-shaped opening 5 and a piston 6.
  • the nozzle module 7 is provided at its end facing the piston 6, an external thread 8, with which it is screwed into the housing shell 3.
  • the piston 6 extends with its the funnel-shaped opening 5 side facing in a closed position into the nozzle module 7 and thereby closes a formed in the housing shell 3, not shown inlet, via which also not shown formed in the housing shell 3 connection with the processing space 4 communicates.
  • a guide bush 9 is arranged in the housing shell 3 in this embodiment.
  • a connection for compressed air in the housing shell 3 is formed, which via a compressed air inlet opening, not shown is connected to the compressed air space 10a.
  • the piston 6 is returned in this embodiment alone by the spring force of the spring 12 in the closed position by the compressed air supply to the compressed air space 10 a is interrupted.
  • a vent opening communicating with the compressed air space 10b is formed in the housing shell 3, so that the air present in the compressed air space 10b can escape during the return of the piston in accordance with the associated volume reduction.
  • the compressed air space 10a, 10b and the processing space 4 are sealed against each other via a sealing means 11, such as an O-ring, so that neither the compressed air for controlling the piston 6 can enter the processing space 4, nor release agent in the compressed air space 10a, 10b ,
  • a further compressed air connection in the housing shell 3 is formed, which communicates via a further inlet opening with the compressed air space 10b.
  • the piston 6 is moved in this embodiment in the desired position by compressed air is introduced into the compressed air space 10b, which either supports the spring force of the spring 12 to move the piston 6 faster in the closed position, or changed the position of the piston 6 as long until a pressure equilibrium is established between the compressed air spaces 10a, 10b in order to hold the piston 6 in an intermediate position and thus only partially open the inlet opening of the separating means.
  • the supply of the release agent to the funnel-shaped opening 5 via the nozzle module 7 can also be carried out continuously without return movement of the piston 6 by the release agent is introduced into the processing chamber 4 pressurized.
  • the piston 6 acts in this case not dosing, but only serves to control the beginning of the supply of the release agent and thus the spraying process and terminates the supply of the release agent at the end of a Sprühzyklusses by a correspondingly initiated return movement by controlling the compressed air supply into the compressed air space 10a, 10b ,
  • the nozzle module 7 Due to the interchangeability of the nozzle module 7 in the housing shell 3, it is possible to control the delivery rate of the release agent in continuous promotion, for example, on the diameter of the nozzle module 7 to be selected. Further, the nozzle module 7 may be made of a different, adapted to the composition of the release agent material than the remaining components of the nozzle head 1. For example, the nozzle head 1 due to the lower weight to be preferred and the easier handling due to lower inertial forces mainly consist of aluminum and the nozzle module 7, for example, made of a stainless steel, to reduce the tendency to abrasion by the release agent to be promoted on the nozzle module 7 or completely prevent what is necessary if the release agent, for example, solids or other abrasive or corrosive substances.
  • FIG. 2 shows a spray head 2 according to the invention with two mounted on a common manifold block 13 nozzle heads 1.
  • the nozzle heads 1 are mounted in flange, which allows a special compact design and arranging several nozzle heads 1 at close intervals, so that also die casting molds with more complicated geometries with sufficient release agent can be sprayed evenly and selectively.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Mold Materials And Core Materials (AREA)
  • Nozzles (AREA)
  • Lubricants (AREA)
EP10176909A 2006-06-02 2006-06-02 Tête atomisante pour l'application d'un agent séparateur sur la surface d'un moule Withdrawn EP2272606A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06011537.5A EP1862239B1 (fr) 2006-06-02 2006-06-02 Tête atomisante pour l application d un agent séparateur sur la surface d un moule

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP06011537.5 Division 2006-06-02
EP06011537.5A Division-Into EP1862239B1 (fr) 2006-06-02 2006-06-02 Tête atomisante pour l application d un agent séparateur sur la surface d un moule

Publications (1)

Publication Number Publication Date
EP2272606A1 true EP2272606A1 (fr) 2011-01-12

Family

ID=36659962

Family Applications (2)

Application Number Title Priority Date Filing Date
EP06011537.5A Active EP1862239B1 (fr) 2006-06-02 2006-06-02 Tête atomisante pour l application d un agent séparateur sur la surface d un moule
EP10176909A Withdrawn EP2272606A1 (fr) 2006-06-02 2006-06-02 Tête atomisante pour l'application d'un agent séparateur sur la surface d'un moule

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP06011537.5A Active EP1862239B1 (fr) 2006-06-02 2006-06-02 Tête atomisante pour l application d un agent séparateur sur la surface d un moule

Country Status (3)

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EP (2) EP1862239B1 (fr)
DE (1) DE202006020839U1 (fr)
ES (1) ES2593037T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108722697A (zh) * 2018-06-25 2018-11-02 丰汉电子(上海)有限公司 一种离型剂喷嘴
CN109093071A (zh) * 2018-09-20 2018-12-28 天长市兴宇铸造有限公司 一种牵引座铸造及处理工艺
CN115533065B (zh) * 2022-10-10 2023-05-09 重庆力劲机械有限公司 一种冷室压铸型腔脱模剂喷涂系统及方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3249545C2 (fr) 1982-10-15 1989-03-02 Oskar Frech Gmbh + Co, 7060 Schorndorf, De
US4907741A (en) * 1987-04-09 1990-03-13 Acumeter Laboratories, Inc. Poppet-valve-controlled fluid nozzle applicator
DE10207197A1 (de) * 2002-02-21 2003-09-04 Alstom Switzerland Ltd Hochdruckeinspritzdüse, insbesondere für den Einsatz als Explosionszerstäuber
EP1410847A2 (fr) * 2002-10-16 2004-04-21 Nordson Corporation Une buse interchangeable pour un module de distribution

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CH583891A5 (fr) 1973-08-24 1977-01-14 Cryostar Ag
US3874862A (en) 1973-12-13 1975-04-01 Ball Brothers Res Corp Mold release composition for molten glass and method of application
DE2542240C3 (de) 1975-09-23 1981-07-30 Lechler Gmbh & Co Kg, 7012 Fellbach Hohlkegeldüse zum Zerstäuben von Flüssigkeit
DE3108793C2 (de) 1981-03-07 1985-01-17 Bima Maschinenfabrik Gmbh, 7450 Hechingen Klebstoff-Auftragevorrichtung, insbesondere für die Lederwaren- und Schuhindustrie
US4458831A (en) 1982-07-19 1984-07-10 W. R. Grace & Co. Variable flow dispensing device
DE3602921A1 (de) * 1986-01-31 1987-08-06 Rolf Daume Einspritzduese
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DE3644184A1 (de) 1986-12-23 1988-07-07 Frech Oskar Gmbh & Co Spruehkopf, insbesondere zum auftragen und verteilen von spruehmittel auf druckgiess- und gesenkschmiedeformen
DE9015533U1 (de) 1990-11-13 1991-01-31 Mattina, Antonio, 5030 Hürth Spritzpistole für das Auftragen von Farbmassen u.dgl.
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JP3130103B2 (ja) * 1991-12-26 2001-01-31 東レ・ダウコーニング・シリコーン株式会社 アルミニウムダイキヤスト用離型剤組成物
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Publication number Priority date Publication date Assignee Title
DE3249545C2 (fr) 1982-10-15 1989-03-02 Oskar Frech Gmbh + Co, 7060 Schorndorf, De
US4907741A (en) * 1987-04-09 1990-03-13 Acumeter Laboratories, Inc. Poppet-valve-controlled fluid nozzle applicator
DE10207197A1 (de) * 2002-02-21 2003-09-04 Alstom Switzerland Ltd Hochdruckeinspritzdüse, insbesondere für den Einsatz als Explosionszerstäuber
EP1410847A2 (fr) * 2002-10-16 2004-04-21 Nordson Corporation Une buse interchangeable pour un module de distribution

Also Published As

Publication number Publication date
EP1862239B1 (fr) 2016-06-29
EP1862239A1 (fr) 2007-12-05
ES2593037T3 (es) 2016-12-05
DE202006020839U1 (de) 2010-06-10

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