EP0139797B1 - Automatische Reinigungseinrichtung für eine Formmaschine - Google Patents

Automatische Reinigungseinrichtung für eine Formmaschine Download PDF

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Publication number
EP0139797B1
EP0139797B1 EP19830306520 EP83306520A EP0139797B1 EP 0139797 B1 EP0139797 B1 EP 0139797B1 EP 19830306520 EP19830306520 EP 19830306520 EP 83306520 A EP83306520 A EP 83306520A EP 0139797 B1 EP0139797 B1 EP 0139797B1
Authority
EP
European Patent Office
Prior art keywords
blow
cleaning
plate
sand
nozzles
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
Application number
EP19830306520
Other languages
English (en)
French (fr)
Other versions
EP0139797A1 (de
Inventor
Seiji Katashima
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.)
NANIWA PRODUCTS CO Ltd
Original Assignee
NANIWA PRODUCTS CO Ltd
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 NANIWA PRODUCTS CO Ltd filed Critical NANIWA PRODUCTS CO Ltd
Priority to EP19830306520 priority Critical patent/EP0139797B1/de
Priority to DE8383306520T priority patent/DE3374764D1/de
Publication of EP0139797A1 publication Critical patent/EP0139797A1/de
Application granted granted Critical
Publication of EP0139797B1 publication Critical patent/EP0139797B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
    • B22C15/23—Compacting by gas pressure or vacuum
    • B22C15/24—Compacting by gas pressure or vacuum involving blowing devices in which the mould material is supplied in the form of loose particles

Definitions

  • This invention relates to an automatic cleaning device for a molding machine, embodying a blow plate and/or blow nozzle.
  • the remaining sand is cured if it is left for a long period of time, so that the sand remaining within the blow head and the blow nozzle after the molding operation must be immediately removed.
  • the remaining sand heaped up on the blow plate which is dismantled from the blow head is removed with a shovel, broom, air duster or the like for the cleaning of the machine, but the sand remaining within the blow nozzle cannot be removed unless an air duster is used.
  • this is troublesome and takes a longer time to carry out a cleaning operation with a duster gun for every blow nozzle, and results in a scattering of sand.
  • GB-A-2046152 on which the preamble of claim 1 is based, describes a clean-out device for a molding machine in which, after molding, the blow head is raised, and a hollow open-topped box is moved beneath an adapter through which molding material has flowed. Cleaning air is then blown through the blow head to clear excess molding material into the box which is connected by a conduit to a suitable receptacle.
  • the present invention has been designed to remove the various disadvantages of conventional systems, and provides an improved automatic cleaning device for use in molding machines.
  • an automatic cleaning device consisting of a compressed air injection mechanism, for a molding machine comprising a blow plate, characterised in that the blow plate is held by a turning frame which can be turned through 90° on a fulcrum provided at one end of a lifting frame which is provided with a lifting cylinder, and the compressed air injection mechanism consists of a vertical blow plate cleaning plate which is arranged opposite to the fulcrum side of the frame and carries two or more cleaning nozzles, and a cylinder for moving the cleaning plate horizontally.
  • the automatic cleaning device of the invention it is possible to collect sand remaining on the blow plate into a lower-positioned sand box in a shorter period of time without needing much labor, and by using a cleaning nozzle disposed opposite each blow nozzle of the blow plate, it is possible to remove the remaining sand completely in a single operation in which a plurality of nozzles are cleaned. This successfully shortens time for cleaning of remaining sand and improves the working environment and is labor saving.
  • FIGS 1 to 6 describe in order one operational mode of an automatic cleaning device of this invention.
  • a molding machine comprises a blow plate 1 which is detachably mounted on a blow head 24 in known manner.
  • a turning frame 2 is provided, as shown in the drawings, with a plurality of respective blow plate holding hooks 10 and cylinders 11 for operating the holding hooks.
  • a lifting frame 3 is supported by a plurality of lifting guide bars 6 inserted through a fixed frame 4, and by a lifting cylinder 9 provided in the frame 4, which lifting cylinder 9 raises and lowers the frame 3.
  • the turning frame 2 is pivotally mounted on a fulcrum 2a at one end of the frame, in such a manner that it is tilted by more than an angle at which the sand on the blow plate may fall.
  • the fulcrum 2a is provided at the compressed air injection mechanism side of the lifting frame 3 referred to below.
  • the frame 2 is turned through an angle of, for example 60° to 90°, and the turning operation is carried out by the actuation of turning cylinders 5.
  • the turning cylinders 5 are mounted on a plate 6a connecting the lifting bars 6, but the turning cylinders 5 can be optionally positioned without being limited to this position.
  • a vertical blow plate cleaning plate 12 is provided with a plurality of cleaning nozzles 18 which at least correspond with the number of blow nozzles 16 arranged in the blow plate 2, and a rubber end 15 is fitted on the end of each of the cleaning nozzles 18.
  • the blow plate cleaning plate 12 is fixed to one end of a cylinder rod of a push- out cylinder 13 of the blow plate cleaning plate, which cylinder 13 is mounted in a vertical position 4a of the fixed frame. By actuation of the cylinder 13, guide bars 14 slide to advance or retract the blow plate cleaning plate 12.
  • a sand discharging chute 7 is provided in the extension of the fixed frame, and is arranged directly under the turning position of said turning frame 2, and leads to a sand discharge box 8.
  • the lifting cylinder 9 When removing the remaining sand within the blow head 24, the lifting cylinder 9 is actuated to raise the lifting frame 3 and the turning frame 2 until the frame 2 comes to a close contact with the lower surface of the blow plate 1, in order that, as shown in Figure 1, the blow plate attached to the blow head 24 of the molding machine can be dismantled. Then the blow plate 1 is removed from the blow head 24 of the molding machine on to the turning frame 2, and the blow plate holding hook cylinder 11 is actuated so that the blow plate 1 is held at the turning frame 2 by the blow plate holding hooks 10.
  • the lifting cylinder 9 is then operated, see Figure 3, to lower the blow plate 1 from the position of Figure 1 to its cleaning position shown in Figure 2. That is, as shown in Figure 2, the remaining sand within the blow head 24 is taken out to the cleaning position on the upper surface of the blow plate 1.
  • the turning cylinders 5 When the turning cylinders 5 are operated the blow plate 1 held by the turning frame 2 is turned through 90° as shown in Figure 4 so that all the remaining sand on the blow plate 1 falls for collection down into the sand discharge box 8 provided beneath the sand discharging chute 7.
  • the operation of removing. remaining sand from the blow plate 1 may not remove sand remaining in the blow nozzles 16 provided in the blow plate 1.
  • the remaining sand in the blow nozzles 16 is completely removed by means of the compressed air injection mechanism which is disposed opposite to the turned blow plate 1 and is movable horizontally.
  • FIG. 7 is a fragmentary sectional view which shows another operational mode of the invention, in which instead of the cleaning nozzles, a cleaning jacket 21 and a flexible plate 20, such as rubber plate, are attached to the blow plate cleaning plate 12.
  • the cleaning jacket 21 communicates with an air intake pipe 17 and has an air hole 22 at the same position as a hole in the rubber plate 20.
  • the operational method in this embodiment is the same, but with this system, there is no requirement for positional adjustment of the air hole 22 even if the blow nozzles are differently positioned and even when the blow plate has a different arrangement of a plurality of blow nozzles 16 they can be cleaned in common.
  • the automatic cleaning device of the invention is capable of throroughly removing automatically and in a shorter period of time than hitherto, the sand remaining in both the blow head and blow nozzles.
  • the sand is not scattered, and therefore both in terms of working environment and labor saving there are distinctive advantages which cannot be obtained from conventional systems.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
  • Cleaning In General (AREA)

Claims (4)

1. Automatische Reinigungsvorrichtung, bestehend aus einer Druckluft-Einblaseinrichtung (12, 18, 21), für eine Formpreßmaschine, die eine Einblasplatte (1) aufweist, dadurch gekennzeichnet, daß die Einblasplatte (1) von einem Drehrahmen (2) gehalten ist, der um 90° auf einem Hebeldrehpunkt (2a) drehbar ist, welcher an einem Ende eines Hubrahmens (3) vorgesehen ist, der mit einem Hubzylinder (9) versehen ist, und daß die Druckluft-Einblaseinrichtung aus einer vertikalen Einblasplatten-Reinigungsplatte (12), die gegenüber der Hebeldrehpunkt-Seite des Rahmens (2) angeordnet ist und zwei oder mehrere Reiningungsdüsen (18, 22) trägt, sowie aus einem Arbeitszylinder (13) zur horizontalen Verschiebung der Reinigungsplatte (12) besteht.
2. Vorrichtung nach Anspruch 1, worin die Reinigungsdüsen (18) Gummienden (15) aufweisen.
3. Vorrichtung nach Anspruch 1 oder Anspruch 2, dadurch gekennzeichnet, daß die Luftzuleitung zu den Reinigungsdüsen (18) in mehrere Luftzuleitungskreise unterteilt ist.
4. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Reinigungsdüsen Lufteinblaslöcher (22) in einer biegsamen Platte (20) sind, die von einer Reinigungshülse (21) getragen ist.
EP19830306520 1983-10-26 1983-10-26 Automatische Reinigungseinrichtung für eine Formmaschine Expired EP0139797B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19830306520 EP0139797B1 (de) 1983-10-26 1983-10-26 Automatische Reinigungseinrichtung für eine Formmaschine
DE8383306520T DE3374764D1 (en) 1983-10-26 1983-10-26 An automatic cleaning device for a molding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19830306520 EP0139797B1 (de) 1983-10-26 1983-10-26 Automatische Reinigungseinrichtung für eine Formmaschine

Publications (2)

Publication Number Publication Date
EP0139797A1 EP0139797A1 (de) 1985-05-08
EP0139797B1 true EP0139797B1 (de) 1987-12-02

Family

ID=8191329

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830306520 Expired EP0139797B1 (de) 1983-10-26 1983-10-26 Automatische Reinigungseinrichtung für eine Formmaschine

Country Status (2)

Country Link
EP (1) EP0139797B1 (de)
DE (1) DE3374764D1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19737716C1 (de) * 1997-08-29 1999-03-04 Joachim Laempe Verfahren zum Reinigen eines Schießkopfes

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3711336C1 (de) * 1987-04-03 1988-11-24 Adolf Hottinger Maschb Gmbh Vorrichtung zum Wechseln der Schusshaube und/oder der Duesenplatte an Kern- und Maskenschiessmaschinen
DE4323107C1 (de) * 1993-07-05 1994-05-26 Hottinger Adolf Masch Vorrichtung und Verfahren zur Werkzeugreinigung bei der Herstellung gießfertiger Masken bzw. Kernpakete
DE4322986C1 (de) * 1993-07-09 1994-07-07 Hottinger Adolf Masch Vorrichtung und Verfahren zur Schußhaubenreinigung bei der Herstellung gießfertiger Masken bzw. Kernpakete
DE4327041C1 (de) * 1993-08-12 1994-06-30 Hottinger Adolf Masch Vorrichtung zum Reinigen von Werkzeugen in Gießereimaschinen
CN107716878A (zh) * 2017-11-14 2018-02-23 六安市鸿圣铸造有限责任公司 一种带清洁功能的造型机

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3899019A (en) * 1972-06-09 1975-08-12 Acme Cleveland Corp Three-position molding machine
US3966174A (en) * 1973-02-02 1976-06-29 Combustion Engineering, Inc. Premix nozzle for kold box process
US4135569A (en) * 1977-07-13 1979-01-23 Acme-Cleveland Corporation Molding machine clean out
DE3010694A1 (de) * 1979-03-26 1980-10-02 Acme Cleveland Corp Formmaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19737716C1 (de) * 1997-08-29 1999-03-04 Joachim Laempe Verfahren zum Reinigen eines Schießkopfes

Also Published As

Publication number Publication date
EP0139797A1 (de) 1985-05-08
DE3374764D1 (en) 1988-01-14

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