EP0257257B1 - Dispositif d'insufflation pour une machine à tirer les noyaux - Google Patents

Dispositif d'insufflation pour une machine à tirer les noyaux Download PDF

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Publication number
EP0257257B1
EP0257257B1 EP87109855A EP87109855A EP0257257B1 EP 0257257 B1 EP0257257 B1 EP 0257257B1 EP 87109855 A EP87109855 A EP 87109855A EP 87109855 A EP87109855 A EP 87109855A EP 0257257 B1 EP0257257 B1 EP 0257257B1
Authority
EP
European Patent Office
Prior art keywords
shooting head
shooting
insert
blowing
plate
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
EP87109855A
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German (de)
English (en)
Other versions
EP0257257A3 (en
EP0257257A2 (fr
Inventor
Joachim Dipl.-Ing. Laempe
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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
Priority to AT87109855T priority Critical patent/ATE46842T1/de
Publication of EP0257257A2 publication Critical patent/EP0257257A2/fr
Publication of EP0257257A3 publication Critical patent/EP0257257A3/de
Application granted granted Critical
Publication of EP0257257B1 publication Critical patent/EP0257257B1/fr
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
    • B22C15/245—Blowing tubes

Definitions

  • the invention relates to a device for injecting core sand by means of compressed air into core boxes on a core shooting machine, with a shooting head, with a shooting plate which can be detachably fastened between the shooting head and the core box on the shooting head and with a shooting tube or the like leading to the shooting head or the like, with the shooting head on on its side facing the shooting plate has a fastening flange or the like, with which the corresponding edge region of the shooting plate can be connected in the use position.
  • the shooting plate is usually screwed tightly to the outer edge of the shooting head by means of screws.
  • the pre-assembled shooting head must in turn be screwed onto the core shooter.
  • the changeover times may take a. due to the time-consuming screwing of the shooting plates, depending on the size of the machine, between 10 and 40 minutes.
  • the unproductive work involved, which is necessary due to the screwing of the shooting plates, is correspondingly large. This unproductive workload can increase if the dirt, sand or similar particles that occur during operation impair the smooth movement of the screw connection.
  • the solution to this problem is that a releasable adhesive connection is provided for connecting the flange of the shooting head to the shooting plate.
  • a detachable adhesive connection has the advantage that to loosen the shooting head and shooting plate, there is no need to first loosen secondary fastening elements for local snagging, tensioning or the like, because the two parts are connected directly. With such direct liability, the problem of difficult solubility of locally acting, secondary connecting elements due to contamination or corrosion is solved by itself.
  • a simple and effective type of such an adhesive connection consists in that a vacuum clamping connection is provided as a releasable adhesive connection between an outer fastening flange surrounding the recess for the sand guide insert and the corresponding contact area of the firing plate.
  • Liability is achieved here solely by the air pressure difference between the vacuum area and the atmospheric pressure acting on the outside of the shooting plate.
  • the plates adhere directly to one another without secondary connecting elements.
  • the functional advantage is that the connection can be made and released in an extremely simple manner. It is sufficient to actuate a vacuum pump by means of a switch, on the one hand to create the vacuum and thus the adhesive connection and on the other hand to release the adhesive connection by restoring the normal pressure in the original vacuum area. Loosening and fixing the shooting plate on the shooting head is done by simple switch operation.
  • the replacement time for a firing plate with the device according to the invention is thus many times shorter than with the previously known systems.
  • Another advantage is the simplicity of the solution according to the invention. With basically the same structure of the known shooting head systems, essentially only the vacuum pump and the creation of a vacuum-compatible space between the shooting plate and shooting head occur as a new element.
  • At least one preferably flat groove or the like recess runs around the fastening flange of the shooting head, the edges of which are surrounded by seals which project in particular from the surface of the fastening flange, and that the (on the fastening flange) n) recess (s) has a connection to a vacuum source, in particular to a vacuum pump.
  • the sealed space created in this way lies outside the working surface of the firing plate and is advantageously closed in a ring, so that a connection to a vacuum source is sufficient to empty the space.
  • the protruding seals have the advantage of pressing more and more onto the counter surface of the firing plate with increasing negative pressure and the resulting contact pressure and thus sealing better as the pressure increases.
  • a magnetic connection can be provided as a releasable adhesive connection between the shooting head and the shooting plate.
  • This embodiment of the invention is particularly advantageous if it cannot be avoided during operation that the sealability of the seals in the vacuum region or the required flatness of the counter surface on the firing plate is impaired in such a way that the sealing connection fails.
  • Such a releasable, magnetic connection can be built into the core shooting device in that at least one electromagnet is embedded in the mounting flange of the shooting head and the shooting plate consists of ferromagnetic material.
  • the loosening or fastening of the shooting plate to the shooting head can be effected solely by changing the switch position for the magnetic current.
  • the shooting plate is attracted to the magnet of the shooting head because it is made of ferromagnetic material.
  • the magnet is switched off, the shooting plate is released immediately.
  • the shooting plate does not need to be modified further, except for the choice of material. It is also sufficient here if the contact surface of the firing plate opposite the mounting flange consists of ferromagnetic material.
  • the magnet is expediently let in on the mounting flange of the shooting head because it is the stationary element of both parts to be connected.
  • the speed of changing the firing plate is determined not only by the duration of the screwing and unscrewing of the firing plate on the shooting head, but also by the working time required to change the firing channel belonging to each firing plate.
  • the entire shooting head in order to replace the shooting channel, the entire shooting head must be detached from the shooting tube jacket.
  • the shooting head has a recess which is open towards the shooting plate and in which a sand guide insert fits particularly flush with the contact surfaces of the flanges of the shooting head on the shooting plate.
  • the sand guide insert mentioned here is designed so that it fits a shooting plate belonging to it.
  • the cylindrical recess of the shooting head preferably has a bottom or the like on the side facing away from the shooting plate as an annular contact surface for the sand guiding insert, which corresponds approximately to the edge region of a sand guiding opening through the sand guiding insert and against which an axially supported on the sand guiding insert, preferably as a fastening flange trained stop or the like.
  • the shooting tube can be pressed in the use position, so that this mounting flange is in the use position only between the sand guide insert and the bottom of the shooting head recess.
  • the shooting tube can be pulled out of the pipe jacket from its flange-side end through the recess of the shooting head after removal of the sand guide insert. This eliminates the need to unscrew the entire shooting head for cleaning the shooting tube in the known systems, which further drastically reduces the dead time of the shooting device due to conversion work.
  • the shooting head is usually mounted on a collar-like widened edge of the casing tube of the core shooting machine with the help of inclined pressure screws.
  • the contact surface of the sand guide. tion insert is formed in the shooting head by a preferably widened collar-like edge of a jacket tube of the core shooting machine.
  • the outer area of the collar-like widened edge of the casing tube can be mounted on the shooting head, while the inner area of the end face of the widened edge, exposed by the recess in the shooting head, serves as a contact surface for the sand guiding insert.
  • the inner contact surface for the sand guiding insert for preferably clamping the fastening flange of the shooting tube between the shooting head and insert is formed by a bottom region of the shooting head itself facing away from the shooting plate, on the outside of which a jacket tube of the core shooting machine is placed bar and can be fastened, this bottom or the like of the shooting head having a passage opening for the shooting tube.
  • the size of the recess in the shooting head for the sand guiding insert and the fact that the shooting tube can be removed in the direction of the shooting plate in a further embodiment of the invention makes it possible to screw the casing tube directly from the inside of the recess of the shooting head without impairing the shooting channels. Centering ring, widened edge of the casing tube and pressure screws can be omitted. It can now serve to connect the shooting head to the casing tube from the recess of the shooting head for the sand guiding insert, parallel to the axis of the shooting tube and positively engaging fasteners, preferably screws.
  • the centering of the casing tube on the shooting head requires no further adjustment in this way, since a defined fit of the casing tube on the shooting head is already achieved with two screws, so that further working time can also be saved.
  • the sand guiding insert which is arranged interchangeably between the firing plate and between the shooting head and is held in the position of use by the holding forces of the firing plate on the shooting head, is made of plastic.
  • Plastic offers the advantage of saving weight compared to other materials. If the sand guide insert is held in the recess solely by the shooting plate on the shooting head, the choice of this light material reduces the necessary holding forces which have to be applied by the vacuum ring or the magnetic holder.
  • the adhesive surface between the shooting head and the shooting plate and the associated vacuum pump or the associated magnet can be made correspondingly smaller.
  • plastic design of the sand guide insert Due to the plastic design of the sand guide insert, a simple and good sealing of the contact surfaces between the sand guide insert and the firing plate or shooting head can be achieved, since plastic adapts well to smaller unevenness and also has a certain elasticity in the axis of the sandblasting direction, which means that it adapts well to it in the case of the vacuum seal, the scope of the adhesive stock between the shooting plate and the shooting head flange is achieved.
  • the shooting device 1 is delimited at its sandblast outlet end by the shooting plate 6, which is attached to the shooting head 15. Since the firing plate 6 is designed differently depending on the type of core to be fired, the firing plates often have to be replaced.
  • a vacuum adhesive connection is provided in the exemplary embodiment shown (FIG. 1) for attaching and detaching the shooting plate to the shooting head 15.
  • annular groove 24 is embedded in the end face 12 of an annular fastening flange 21 of the shooting head 15 facing the shooting plate 6. 1 and 2, clearly marked by black dots, ring-shaped seals 23 can be seen, which are attached close to the inner and outer circumference of the ring groove. After the shooting plate 6 has been placed against the shooting head 15, these seals bear on the counter surface 13 of the shooting plate facing the shooting head and thus delimit an annular space which extends around the circumference of the flange 21 of the shooting head jacket 4.
  • connection 25 leading to the annular groove 24 is now connected to a vacuum pump and this is put into operation, a vacuum is formed in the rough sealed by the seals 23, which causes the shooting head plate 6 to be pressed against the shooting head jacket 4 or the sand guide insert 5 leads.
  • the firing plate can be released again by switching off the vacuum pump and admitting air through the connection 25.
  • the vacuum surface encompassed by the sealing elements 23 or the annular groove 24 is matched to the weight of the firing plate 6.
  • the shooting plate 6 is loosened and fixed on the shooting head jacket 4 according to what has been described above, that is to say by simply operating a switch.
  • the replacement time for a firing plate with the device according to the invention is thus many times shorter than with the previously known screw connections.
  • annular groove 24 can be constructed with other types of recesses, e.g. B. several independently circumferential grooves 24 which are sealed against one another by seals 23 and thus z. B. against leaks of individual seals 23 are less susceptible.
  • Recesses are also possible which do not run in a ring shape, but rather cover or partially cover the end face 12 of the flange 21 in sectors which are delimited from one another.
  • the groove can also be provided on the edge surface of the shooting plate 6 opposite the end face 12 of the fastening flange 21 of the shooting head casing 4, which would lead to a, albeit minimal, weight saving of the shooting plate 6.
  • a magnetic connection is shown in FIG. 3 as another type of adhesive connection between the shooting plate 6 and the shooting head jacket 4.
  • Electrical lines acting as electromagnet 26 are embedded in the mounting flange 21 on its end face 12 and generate a magnetic field when current flows through the connecting lines 27, by means of which the shooting plate 6, which is made of ferromagnetic material, is attracted. It is not necessary here for the entire shooting plate 6 to be made of ferromagnetic material, but it is sufficient if at least the edge area which comes into contact with the end face 12 of the shooting head casing 4 can be magnetized.
  • Such a magnetic connection is particularly advantageous if the seals 24 of a vacuum adhesive system can easily be damaged during the production process.
  • the shooting head has a recess which is open towards the shooting plate 6 and in which a sand guide insert 5 fits particularly flush with the contact surfaces 12 of the flange 21 of the shooting head 15.
  • the shooting head 15 thus breaks down constructively into a shooting head jacket 4 and the sand guiding insert 5. Unscrewing the entire shooting head 15 to adapt the sand guiding to the different shooting plates 6 is therefore unnecessary.
  • the sand guide insert can be easily removed from the shooting head jacket 4 after the firing plate 6 has been released.
  • the cylindrical recess of the shooting head 15 in the exemplary embodiments, into which the equally cylindrical sand guiding insert 5 fits, has a bottom 19 on the side facing away from the shooting plate as an annular contact surface for the sand guiding insert 5, which corresponds to the edge region of the sand guiding opening through the sand guiding insert 5 in the exemplary embodiment .
  • a mounting flange 7 of the shooting tube 2, which is axially supported on the sand guide insert 5, can be pressed against the bottom 19 of the shooting head casing, which is designed as an annular contact surface, so that this mounting flange 7 is in the position of use exclusively between the sand guide insert 5 and the bottom 19 of the shooting head recess (FIG .2).
  • the sand guide insert 5 is now simultaneously pressed against the flange 7 by the pressure of the shooting plate 6.
  • the fastening flange of the shooting tube 2 can be dispensed with, which results in an even simpler construction.
  • the shooting tube 2 is simply inserted with the end face of its shooting head end into an annular groove 28 on the circumference of the sand guiding opening of the sand guiding insert 5.
  • the invention is applicable both to conventional shooting head mounting systems and to simplified mounting systems to be shown below.
  • 1 and 2 each show an exemplary embodiment with a conventional type of fastening of the shooting head 15 at the foot of the casing tube 3.
  • This is a pressure screw fastening mechanism in which pressure screws 17 directed towards an externally conically widened edge 16 of the foot of the casing tube 3 are the shooting head 15 connect with the casing tube 3.
  • the foot surface 3a of the conically widened tubular casing foot serves on its outer edge as a support surface for its attachment to the shooting head casing 4 and in its inner area as a contact surface for the sand guide insert 5 or the shooting tube flange 7 lying between the contact surface of the sand guide insert 5 and the foot surface 3a (Fig. 1).
  • FIG. 2 shows, in one exemplary embodiment, a simplified manner of fastening the shooting head casing 4 to the casing tube 3.
  • the inner contact surface for the sand guide insert or for the flange 7 of the shooting tube 2 is formed here by the bottom region 19 of the recess in the shooting head 15 itself and no longer, as shown in FIGS. 1 and 3, by the base surface 3a of the jacket tube 3.
  • the jacket tube 3 is placed on the outside of the shooting head shell in this exemplary embodiment, the shooting tube 2 being guided through its through-hole 20 through the shooting head jacket to its contact surface in the shooting head.
  • the shooting tube 2 can here as with the conventional type of attachment with the help of Pressure screws are either clamped with a flange between the sand guide insert 5 and the inner contact surface in the shooting head 15 or inserted into a groove 28 of the sand guide insert 5 as described above.
  • the pot-like shape of the shooting head jacket in this exemplary embodiment in contrast to the conventional fastening method for connecting the shooting head jacket 4 to the jacket tube 3, can be inserted from the recess of the shooting head jacket 4 for the sand guiding insert 5, runs parallel to the axis of the shooting tube 2 and engages in the jacket tube 3 in a form-fitting manner
  • Use screws 22 These screws, which are driven through the bottom 19 of the shooting head casing 4, solve both the problem of centering the tubular casing 3 on the shooting head casing 4 and the problem of contamination of these screw connections. Their inner layer protects them from dirt that could affect their ability to move.
  • the use of plastic as a material for the sand guide insert 5 has a favorable effect. Because firstly, the weight savings compared to other materials, the holding forces, which are required for the attachment of the shooting plate and the holding of the sand guide insert in the recess, are reduced, so that the adhesive connections can be dimensioned correspondingly smaller and less costly. On the other hand, plastic ensures a good seal on the contact surfaces and is inexpensive to manufacture.
  • the adhesive connection between the shooting plate 6 and the shooting head jacket 4 is not only a vacuum adhesive connection or a magnetic adhesive connection, as shown in the exemplary embodiments, but both types of adhesive connections can be combined with one another in a wide variety of ways.
  • the invention and its embodiments reduce the working time required to change the firing plate to less than 20 seconds.
  • the main advantage of the invention and its refinements is that only the quick adhesive connection has to be loosened and restored to replace or clean the inserts. A change of the entire shooting head system is therefore unnecessary.
  • the design effort, which the invention presupposes, is extremely low compared to these advantages.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Chutes (AREA)
  • Stored Programmes (AREA)
  • Casting Devices For Molds (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Catching Or Destruction (AREA)
  • Soil Working Implements (AREA)

Claims (14)

1. Dispositif pour insuffler, au moyen d'air comprimé, du sable à noyaux dans des boîtes à noyaux, pour une machine à tirer les noyaux, avec une tête de tirage, avec une plaque de tirage qui peut être fixée de manière démontable sur la tête de tirage entre cette dernière et la boîte à noyau, et avec un tube de tirage ou autre dispositif similaire amenant le sable à la tête de tirage, la tête de tirage possédant, sur son côté tourné vers la plaque de tirage, une bride de fixation ou similaire, par laquelle la région de bord correspondante de la plaque de tirage peut être assemblée en position d'utilisation, caractérisé en ce qu'il est prévu, pour assembler la bride (21) de la tête de tirage (15) à la plaque de tirage (6), un assemblage par adhérence démontable.
2. Dispositif selon la revendication 1, caractérisé en ce qu'il est prévu comme assemblage par adhérence démontable un assemblage par serrage sous vide.
3. Dispositif selon la revendication 1 ou 2, caractérisé en ce qu'au moins une rainure annulaire de préférence plate (24), ou autre évidement similaire, fait le tour de la bride de fixation (21) de la tête de tirage (15), évidement dont les bords sont entourés par des joints d'étanchéité (23), notamment qui dépassent de la surface de la bride de fixation, et en ce que le ou les évidements (24) qui se trouvent sur la bride de fixation (21) présentent un raccordement (25) à une source de dépression, pompe à vide notamment.
4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce qu'il est prévu comme assemblage par adhérence démontable entre la tête de tirage et la plaque de tirage un assemblage magnétique.
5. Dispositif selon la revendication 4, caractérisé en ce qu'au moins un électro-aimant (26) est encastré sur la bride de fixation (21) de la tête de tirage (15), et en ce que la plaque de tirage (6) est réalisée, au moins dans la région en vis-à-vis de la bride de fixation (21), en matériau ferromagnétique.
6. Dispositif selon la revendication 4 ou 5, caractérisé en ce que le ou les électro-aimants (26) présentent des enroulements en matériau électriquement conducteur, qui tournent autour de la face d'application (12) de la tête de tirage, et sont de préférence au moins partiellement noyés dans cette face d'application (12).
7. Dispositif notamment selon l'une des revendications 1 à 6, caractérisé en ce que la tête de tirage (15) présente un évidement ouvert vers la plaque de tirage (6), dans lequel s'adapte l'élément rapporté d'amenée de sable (5), notamment en affleurement avec les faces d'application (12) contre la plaque de tirage (6).
8. Dispositif selon l'une des revendications 1 à 7, caractérisé en ce que l'assemblage sous vide est prévu entre une bride de fixation extérieure (21), qui s'étend autour de l'évidement pour l'élément rapporté d'amenée de sable (5), et la région d'application correspondante de la plaque de tirage (6).
9. Dispositif selon l'une des revendications 1 à 8, caractérisé en ce que l'évidement de préférence cylindrique de la tête de tirage (15) présente, sur le côté opposé à la plaque de tirage (6), un fond (19) ou similaire comme face d'application annulaire pour l'élément rapporté d'amenée de sable (5), qui correspond approximativement à la région de bord d'une ouverture d'amenée de sable traversant l'élément rapporté d'amenée de sable (5), et contre lequel peut être pressée, en position d'utilisation, une butée ou similaire du tube de tirage (2), de préférence conformée en bride de fixation (7), qui est appuyée axialement contre l'élément rapporté d'amenée de sable (5), de sorte que cette bride de fixation (7) se trouve, en position d'utilisation, exclusivement entre l'élément rapporté d'amenée de sable (5) et le fond (19) de l'évidement de la tête de tirage.
10. Dispositif selon l'une des revendications 1 à 9, caractérisé en ce que la face d'application de l'élément rapporté d'amenée de sable (5) est formée dans la tête de tirage (15) par un bord d'un tube d'enveloppe (3) de la machine à tirer les noyaux (1), bord qui est de préférence élargi à la manière d'un collet afin de fixer en position la tête de tirage (15).
11. Dispositif selon l'une des revendications 1 à 10, caractérisé en ce que la face d'application intérieure pour l'élément rapporté d'amenée de sable (5) est formée, en vue de préférence de serrer la bride de fixation (7) du tube de tirage (2) entre la tête de tirage (15) et l'élément rapporté (5), par une région de bord (19) de la tête de tirage (15) elle-même qui est opposée à la plaque de tirage (6), région sur le côté extérieur de laquelle un tube d'enveloppe (3) de la machine à tirer les noyaux (1) peut être mis en place et fixé, ce fond (19) ou similaire de la tête de tirage (15) possédant une ouverture de passage (20) pour le tube de tirage (2).
12. Dispositif selon l'une des revendications 1 à 11, caractérisé en ce que des éléments de fixation (22), de préférence des vis, qui peuvent être introduits par l'évidement de la tête de tirage (15) pour l'élément rapporté d'amenée de sable (5), qui s'étendent parallèlement à l'axe du tube de tirage (2), et qui s'engagent par complémentarité de forme dans le tube d'enveloppe (3), sont prévus pour l'assemblage de la tête de tirage (15) avec le tube d'enveloppe (3).
13. Dispositif selon l'une des revendications 1 à 12, caractérisé en ce que l'élément rapporté d'amenée de sable, disposé de manière interchangeable entre la plaque de tirage (6) et la tête de tirage (15), et maintenu en position d'utilisation par les forces d'adhérence de la plaque de tirage (6) contre la tête de tirage (15), est réalisé en matière plastique.
14. Dispositif selon l'une des revendications 1 à 13, caractérisé en ce que le tube de tirage (2), à son extrémité côté tête de tirage, est mis en place par la face frontale de sa paroi tubulaire sur l'élément rapporté d'amenée de sable (5), ou dans une rainure correspondante (28) de forme adaptée à l'extrémité du tube de tirage.
EP87109855A 1986-08-08 1987-07-08 Dispositif d'insufflation pour une machine à tirer les noyaux Expired EP0257257B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87109855T ATE46842T1 (de) 1986-08-08 1987-07-08 Einschiessvorrichtung an einer kernschiessmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3626994A DE3626994C1 (de) 1986-08-08 1986-08-08 Einschiessvorrichtung an einer Kernschiessmaschine
DE3626994 1986-08-08

Publications (3)

Publication Number Publication Date
EP0257257A2 EP0257257A2 (fr) 1988-03-02
EP0257257A3 EP0257257A3 (en) 1988-06-08
EP0257257B1 true EP0257257B1 (fr) 1989-10-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP87109855A Expired EP0257257B1 (fr) 1986-08-08 1987-07-08 Dispositif d'insufflation pour une machine à tirer les noyaux

Country Status (5)

Country Link
US (1) US4815517A (fr)
EP (1) EP0257257B1 (fr)
AT (1) ATE46842T1 (fr)
DE (2) DE3626994C1 (fr)
ES (1) ES2011637B3 (fr)

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DE3736967C1 (en) * 1987-10-31 1989-03-30 Harry Post Lining plate for the mould space of boxless moulding machines
DE4109382A1 (de) * 1991-03-21 1992-09-24 Gisag Ag Giesserei Masch Einschiesseinrichtung fuer formmaschinen, insbesondere kernschiessmaschinen
ES1045359Y (es) * 2000-02-15 2001-02-16 Loramendi Sa Cabezal de soplado para maquinas sopladoras de machos
WO2009074838A1 (fr) * 2007-12-10 2009-06-18 Disa Industries A/S Disposition de chambre de moulage pour installation à moules multiples
CN102764857A (zh) * 2012-07-11 2012-11-07 浙江省机电设计研究院有限公司 快换铁型覆砂射砂板的装置
CN105945229B (zh) * 2016-07-06 2017-09-29 安徽莱恩电泵有限公司 一种新型铸钢泵体浇注模具结构
CN106424597B (zh) * 2016-11-15 2018-09-25 盐城市汉铜智能铸造设备有限公司 上下射砂全自动砂型铸造造型机喷砂板
CN109773136B (zh) * 2019-03-14 2020-07-17 安徽应流集团霍山铸造有限公司 一种防止泵体类铸件细小流道砂芯开裂的方法

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Also Published As

Publication number Publication date
US4815517A (en) 1989-03-28
EP0257257A3 (en) 1988-06-08
ATE46842T1 (de) 1989-10-15
DE3760653D1 (en) 1989-11-09
EP0257257A2 (fr) 1988-03-02
ES2011637B3 (es) 1990-02-01
DE3626994C1 (de) 1987-12-10

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