EP1832358A1 - Verfahren und System zur Herstellung von Gussformen - Google Patents

Verfahren und System zur Herstellung von Gussformen Download PDF

Info

Publication number
EP1832358A1
EP1832358A1 EP07004056A EP07004056A EP1832358A1 EP 1832358 A1 EP1832358 A1 EP 1832358A1 EP 07004056 A EP07004056 A EP 07004056A EP 07004056 A EP07004056 A EP 07004056A EP 1832358 A1 EP1832358 A1 EP 1832358A1
Authority
EP
European Patent Office
Prior art keywords
casting sand
receiver
casting
stirring
solvent
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.)
Granted
Application number
EP07004056A
Other languages
English (en)
French (fr)
Other versions
EP1832358B1 (de
EP1832358B8 (de
Inventor
Yuji Hori
Shoichi Nishi
Naohiro Miura
Yuya Fukuta
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.)
Mazda Motor Corp
Original Assignee
Mazda Motor Corp
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 Mazda Motor Corp filed Critical Mazda Motor Corp
Publication of EP1832358A1 publication Critical patent/EP1832358A1/de
Publication of EP1832358B1 publication Critical patent/EP1832358B1/de
Application granted granted Critical
Publication of EP1832358B8 publication Critical patent/EP1832358B8/de
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
    • B22C5/04—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by grinding, blending, mixing, kneading, or stirring
    • B22C5/0409—Blending, mixing, kneading or stirring; Methods therefor
    • B22C5/044—Devices having a vertical stirrer shaft in a fixed receptacle
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
    • B22C5/04—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by grinding, blending, mixing, kneading, or stirring
    • B22C5/0409—Blending, mixing, kneading or stirring; Methods therefor
    • B22C5/044—Devices having a vertical stirrer shaft in a fixed receptacle
    • B22C5/0445—Devices having a vertical stirrer shaft in a fixed receptacle the material flowing continuously through the device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
    • B22C5/12—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose for filling flasks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/12—Treating moulds or cores, e.g. drying, hardening
    • B22C9/123—Gas-hardening

Definitions

  • This invention relates to the technical field of a casting mold making method and system in which gas-curing casting sand is blown and packed into a cavity created by molding dies.
  • gas-curing casting sand containing a binder (a phenol resin and a polyisocyanate compound) and a solvent (such as toluene) is previously accommodated in a blow head, the casting sand is blown and packed through the blow nozzles into a cavity in molding dies by feeding pressurized gas into the blow head and a curing gas (such as triethylamine gas) is then introduced into the cavity to cure the casting sand packed in the cavity, thereby making a casting mold.
  • a binder a phenol resin and a polyisocyanate compound
  • a solvent such as toluene
  • casting sand in a blow head is suspended and fluidized by air, lumps of the casting sand are broken up by passing them through a cutter and the casting sand is then blown and packed into the cavity by pressurized air.
  • Gas-curing casting sand as described above has a sticky particle surface owing to the binder. Therefore, the bulk density of gas-curing casting sand in the blow head greatly varies. This makes it difficult to ensure a constantly good packability of casting sand into the cavity.
  • the solvent adhering to the surfaces of the sand particles together with the binder is blown off by the air to increase the concentration of the binder on the sand particle surface and thereby accelerate the curing reaction of the casting sand.
  • the casting sand is cured prior to its packing into the cavity of the molding dies, thereby degrading the quality of a casting mold to be formed.
  • the solvent coated on the sand particles is highly likely to be reduced.
  • the present invention has been made in view of the foregoing points and, therefore, its object is to blow and pack gas-curing casting sand into a cavity created by molding dies while ensuring good, constant packability without curing the casting sand prior to the packing into the cavity.
  • casting sand in a blow head is stirred with a stirrer prior to its blowing and packing into the cavity until the stirring resistance of the stirrer enters within a predetermined range.
  • a method for making a casting mold of the present invention comprises: a blowing and packing step of feeding pressurized gas into a receiver that is provided in a blow head and accommodates gas-curing casting sand, thereby blowing the casting sand in the receiver into a cavity in molding dies through a blow nozzle that is provided in the blow head and communicates with the receiver and packing the casting sand into the cavity; a curing step of, after the blowing and packing step, introducing curing gas into the cavity to cure the casting sand packed in the cavity; and a stirring step of, before the blowing and packing step, stirring the casting sand in the receiver with a stirrer until the stirring resistance of the stirrer enters within a predetermined range.
  • the casting sand in the receiver is stirred and unstiffened. If the bulk density of casting sand thus stirred is too high, the casting sand clogs the blow nozzle and thereby becomes difficult to get out of the blow nozzle. On the contrary, if the casting sand is excessively unstiffened to reach an excessively small bulk density, only the pressurized gas quickly blows out through the blow nozzle and, also in this case, the casting sand becomes difficult to get out of the blow nozzle. In other words, there exists an optimum bulk density range within which casting sand can efficiently blow out through the blow nozzle.
  • casting sand in the receiver is not stirred, its bulk density is generally higher than the optimum bulk density range.
  • the bulk density of casting sand becomes higher and higher owing to pressures applied from pressurized gas.
  • the stirring resistance of the stirrer is in correspondence with the bulk density of casting sand so that as the bulk density increases, the stirring resistance becomes higher.
  • the stirring step, the blowing and packing step and the curing step are sequentially repeated and the predetermined range is set in each stirring step. More preferably, the predetermined range is set based on the amount of casting sand in the receiver in each stirring step.
  • the predetermine range can be appropriately set based on the amount of casting sand in the receiver in each stirring step. Specifically, when the blowing and packing step is carried out once, the amount of casting sand in the receiver is reduced by the amount of casting sand packed into the cavity. If in this case no casting sand is supplementally fed into the receiver, the amount of casting sand in the receiver in the next stirring step differs from that in the previous stirring step. If the amount of casting sand changes thus, the relation between the bulk density of casting sand and the stirring resistance of the stirrer also changes. However, since in the present invention the range of stirring resistances corresponding to the optimum bulk density range can be set to the predetermined range, this provides good, constant packability in every stirring step.
  • the casting sand contains a binder and a solvent and the method further comprises a solvent feed step of, before or during the stirring step, supplementally feeding the solvent into the receiver.
  • the solvent coated on the sand particles can be prevented from being reduced.
  • pressurized air is fed into the receiver in order to blow and pack casting sand into the cavity, whereby the solvent on the sand particles is blown away and reduced to a certain extent by the pressurized gas.
  • the amount of solvent reduced can be supplementally fed, this prevents the quality of a produced casting mold from being degraded. Even if the solvent is supplementally fed thus, the binder, the solvent and sand can be stirred uniformly by stirring in the stirring step, which avoids that the solvent becomes locally excessive in the receiver.
  • a casting mold making system of the present invention includes a blow head having a receiver for accommodating gas-curing casting sand and a blow nozzle communicating with the receiver and a pressurized gas feed system for feeding pressurized gas into the receiver of the blow head and is configured to feed pressurized gas into the receiver through the pressurized gas feed system and thereby blow the casting sand in the receiver through the blow nozzle into the cavity and pack the casting sand into the cavity.
  • the casting mold making system further comprises: a stirrer for stirring the casting sand in the receiver; a stirrer drive unit for driving the stirrer; a stirring resistance detection device for detecting the stirring resistance of the stirrer; and an operation controller for controlling the operation of the stirrer drive unit, the operation controller being configured to, prior to the feeding of pressurized gas into the receiver through the pressurized gas feed system, operate the stirrer drive unit until the stirring resistance detected by the stirring resistance detection device enters within a predetermined range.
  • the above casting mold making system further comprises a casting sand amount detection device for detecting the amount of casting sand in the receiver, wherein the operation controller is configured to set the predetermined range based on the amount of casting sand detected by the casting sand amount detection device.
  • the casting sand contains a binder and a solvent
  • the casting mold making system further comprises a solvent spray device for supplementally feeding, under the control of the operation controller, the solvent into the receiver by spraying, and the operation controller is configured to, before or during the operation of the stirrer drive unit, operate the solvent spray device to supplementally feed the solvent into the receiver.
  • the above casting mold making method can be easily implemented and the same operations and effects as according to the above casting mold making method can be obtained.
  • FIG. 1 schematically shows a casting mold making system according to an embodiment of the present invention.
  • the casting mold making system is a cold box casting mold making system including a blow head 1 with a receiver 2 for accommodating gas-curing casting sand 41 .
  • the casting sand 41 contains a binder composed of a phenol resin and a polyisocyanate compound and a solvent so that the surfaces of sand particles are coated with the binder and the solvent.
  • the phenol resin in the binder include phenol resins having at least one benzyl ether group in its molecule, novolak resins and their derivative resins.
  • the polyisocyanate compound examples include diphenylmethane diisocyanate, hexamethylene diisocyanate and 4,4'-dicyclohexylmethane diisocyanate.
  • the solvent is an organic solvent including aliphatic hydrocarbons, alicyclic hydrocarbons, aromatic hydrocarbons, halogenated hydrocarbons, ketones, esters, ethers and alcohols, or their mixtures.
  • the casting sand 41 is fed from a kneading unit 3 disposed above the receiver 2 to the receiver 2 .
  • the binder, the solvent and sand are charged into the kneading unit 3 and uniformly kneaded by a kneader 4 driven into rotation in the kneading unit 3 , thereby providing casting sand 41 in which sand particles are coated with the binder and the solvent as described above.
  • a shutter 5 opened and closed by a shutter drive mechanism 6 , is disposed between the receiver 2 and the kneading unit 3 .
  • the operation of the shutter drive mechanism 6 is controlled by a controller 31 .
  • the shutter 5 is opened by the shutter drive mechanism 6
  • the casting sand 41 falls down from the kneading unit 3 by its own weight and is fed to the receiver 2 .
  • the bottom of the blow head 1 is provided with a plurality of blow nozzles 9 , communicated with the receiver 2 , for blowing out casting sand 41 in the receiver 2 therethrough.
  • the blow nozzles 9 are presented to a cavity 36 created by a plurality of molding dies 35 set up below the casting mold making system. Casting sand 41 blown out through the blow nozzles 9 is packed into the cavity 36 to have a shape of a casting mold to be made by the casting mold making system.
  • Casting molds made by the casting mold making system include casting molds for cylinder blocks or cylinder heads and cores for water jackets of the cylinder heads.
  • An upper portion of any one of the side walls defining the receiver 2 in the blow head 1 is formed with an air feed port 1a through which pressurized air serving as pressurized gas is fed into the receiver 2.
  • the air feed port 1a is connected to an air tank 12 through a solenoid valve 11 whose actuation is controlled by the controller 31 .
  • the air tank 12 is supplied with air in the factory while the air to the air tank 12 is kept at a constant pressure (about 0.2 MPa to about 1 MPa) by a regulator (not shown). The air supplied is stored as the pressurized air in the air tank 12 .
  • the solenoid valve 11 When the solenoid valve 11 is actuated, the pressurized air in the air tank 12 is fed into the receiver 2 , whereby casting sand 41 in the receiver 2 is blown through the blow nozzles 9 into the cavity 36 in the molding dies 35 and packed into the cavity 36 .
  • the solenoid valve 11 , the air tank 12 and the controller 31 constitute pressurized gas feed system for feeding pressurized gas into the receiver 2 .
  • the pressurized air, blown into the cavity 36 together with the casting sand 41 is vented out of the cavity 36 through air vents 37 attached to the bottom of the molding die 35 .
  • An upper portion of any one of the side walls defining the receiver 2 is formed with a solvent feed port 1b through which the solvent is supplementally fed into the receiver 2.
  • the solvent feed port 1b is connected to a solvent spray device 15 for supplementally feeding the solvent into the receiver 2 by spraying it.
  • the operation of the solvent spray device 15 is controlled by the controller 31 and operates prior to the actuation of a drive motor 22a of the after-mentioned stirrer drive unit 22 to supplementally feed a given amount of solvent into the receiver 2 by spraying.
  • the solvent on the sand particles has been blown away and reduced to a certain extent by pressurized air. Therefore, the solvent is supplementally fed into the receiver 2 by substantially the same amount as the amount of solvent reduced.
  • a casting sand amount sensor 16 serving as a casting sand amount detection device for detecting the amount of casting sand 41 in the receiver 2 .
  • the casting sand amount sensor 16 is configured to emit infrared rays downward, receive infrared rays reflected from the top surface of the casting sand 41 and detect the amount of casting sand 41 in the receiver 2 based on the intensity of the reflected infrared rays.
  • any appropriate sensors having other configurations can also be employed. Data on the amount of casting sand 41 in the receiver 2 detected by the casting sand amount sensor 16 is input to the controller 31 .
  • a lower part of the interior of the receiver 2 of the blow head 1 is provided with a stirrer 21 for stirring casting sand 41 in the receiver 2 .
  • the stirrer 21 is an element for unstiffening casting sand 41 to bring it to an optimum bulk density as described later.
  • the stirrer 21 is composed of a rotary shaft 21a vertically extending and rotatably supported, a base plate 21b fixed to the lower end of the rotary shaft 21a and extending horizontally, and a plurality of stirring bars 21c disposed on the base plate 21b .
  • the upper end of the rotary shaft 21a is connected to the stirrer drive unit 22 .
  • the stirrer drive unit 22 includes a drive motor 22a , a connecting member made, for example, of flexible wire and connecting the rotary shaft of the drive motor 22a to the rotary shaft 21a , and a drive circuit for driving the drive motor 22a .
  • the drive circuit includes a current detecting element 22b for detecting the value of current flowing into the drive motor 22a .
  • the operation of the drive motor 22a of the stirrer drive unit 22 is controlled by the controller 31 .
  • the controller 31 constitutes an operation controller for controlling the operation of the drive motor 22a of the stirrer drive unit 22 .
  • data on the value of current detected by the current detecting element 22b is input to the controller 31 .
  • the controller 31 is configured to, prior to the blowing and packing of casting sand 41 in the receiver 2 into the cavity 36 , operate the drive motor 22a until the stirring resistance of the stirrer 21 enters within a predetermined range.
  • the stirring resistance of the stirrer 21 is detected by the current detecting element 22b .
  • the value of current of the drive motor 22a is in correspondence with the motor torque required to rotate the stirrer 21 , i.e., the stirring resistance of the stirrer 21 , so that as the stirring resistance of the stirrer 21 increases, the value of current of the drive motor 22a increases.
  • the current detecting element 22b constitutes a stirring resistance detection device for detecting the stirring resistance of the stirrer 21 .
  • the predetermined range of stirring resistances i.e., the predetermined range of current values, is set at a range within which casting sand 41 in the receiver 2 can efficiently blow out through the blow nozzles 9 .
  • the relation between the bulk density of casting sand 41 in the receiver 2 and the kinetic energy thereof blown out through the blow nozzles 9 was examined by changing the bulk density of casting sand 41 in the receiver 2 while keeping the amount thereof constant. The kinetic energy was determined from the mass of the casting sand 41 in the receiver 2 and the velocity of it blown out through the blow nozzles 9 . The examination results are shown in Figure 2 .
  • Figure 2 indicates that there exists a bulk density range within which the kinetic energy reaches the maximum value or near the maximum value, in other words, an optimum bulk density range within which casting sand 41 efficiently blows out through the blow nozzles 9 .
  • the reason for this is as follows. If the bulk density of casting sand 41 is excessively high, casting sand 41 clogs the blow nozzles 9 and thereby becomes difficult to get out of the blow nozzles 9 . On the other hand, if casting sand 41 is excessively unstiffened to reach an excessive low bulk density, only pressurized air quickly blows out through the blow nozzles 9 and, also in this case, casting sand 41 becomes difficult to get out of the blow nozzles 9 .
  • Figure 3 indicates that the stirring resistance of the stirrer 21 is in correspondence with the bulk density of casting sand 41 so that as the bulk density increases, the stirring resistance also increases. Therefore, the blowing of casting sand 41 into the cavity 36 will do well if a range of stirring resistances corresponding to the optimum bulk density range is set at the above-described predetermined range of stirring resistances.
  • a range of current values corresponding to the predetermined range of stirring resistance can be set at the above-described predetermined range of current values.
  • the optimum bulk density range varies depending upon the amount of casting sand 41 in the receiver 2 . Therefore, the amount of casting sand 41 in the receiver 2 is detected by the casting sand amount sensor 16 . Specifically, an examination is previously made of the relation between the amount of casting sand 41 and the optimum bulk density range (i.e., the predetermined range of current values), the examination results are mapped in a table and the table is stored in the controller 31 . When receiving data on the amount of casting sand 41 from the casting sand amount sensor 16 during operation of the casting mold making system, the controller 31 sets, based on the table, a predetermined range of current values corresponding to the detected amount of casting sand 41 .
  • the controller 31 actuates the shutter drive mechanism 6 to feed casting sand 41 from the kneading unit 3 into the receiver 2 .
  • the solvent spray device 15 is operated to supplementally feed the given amount of solvent into the receiver 2 by spraying it.
  • a predetermined range of current values is set. Specifically, the predetermined range of current values is set based on the amount of casting sand 41 in the receiver 2 detected by the casting sand amount sensor 16 and the table.
  • step S3 the drive motor 22a of the stirrer drive unit 22 is operated in step S3 and it is then determined in step S4 whether the value of current detected by the current detecting element 22b is within the predetermined range of current values.
  • step S4 If the determination in step S4 is NO, the procedure goes back to step S3. If the determination in step S4 is YES, the procedure goes to step S5 to stop the drive motor 22a and then goes to step S6 to actuate the solenoid valve 11 and thereby feed pressurized air in the air tank 12 into the receiver 2 .
  • step S7 it is determined whether the amount of casting sand 41 detected by the casting sand amount sensor 16 is smaller than the predetermined amount. In the determination in step S7 is NO, the procedure ends. If the determination in step S7 is YES, the procedure goes to step S8 to actuate the shutter drive mechanism 6 and then ends.
  • the molding dies 35 are set up in the casting mold making system and the casting mold making system is activated by switch operation or in other manners.
  • the given amount of solvent is supplementally fed into the receiver 2 (a solvent feed step).
  • the base plate 21b of the stirrer 21 rotates about the rotary shaft 21a , whereby the plurality of stirring bars 21c on the base plate 21b stir the casting sand 41 in the receiver 2 to unstiffen it (a stirring step).
  • the binder, the solvent (including supplementally fed solvent) and sand in the receiver 2 are uniformly mixed.
  • the bulk density of casting sand 41 in the receiver 2 is usually higher than the optimum bulk density range.
  • the bulk density gradually decreases and then reaches the optimum bulk density range.
  • the value of current detected by the current detecting element 22b enters within the predetermined range of current values and the operation of the stirrer 21 is stopped.
  • the molding dies 35 are moved to an unshown curing gas introduction device disposed separately from the blow head 1 in order to introduce curing gas into the cavity 36 in the molding dies 35 , and placed in the curing gas introduction device. Then, curing gas (such as triethylamine gas) is introduced into the cavity 36 to cure the casting sand 41 packed in the cavity 36 (a curing step), thereby completing the making of a high-quality casting mold.
  • curing gas such as triethylamine gas
  • the molding dies 35 may be set up again in the casting mold making system in order to make another casting mold.
  • the solvent feed step, the stirring step and the blowing and packing step are similarly sequentially carried out.
  • the solvent on the sand particles however, has been blown away and reduced to a certain extent by pressurized air in the previous blowing and packing step. Therefore, in this solvent feed step, the solvent is supplementally fed by substantially the same amount as the amount of solvent reduced.
  • the binder, the solvent (including supplementally fed solvent) and sand in the receiver 2 are further uniformly mixed. Furthermore, the amount of casting sand 41 generally becomes smaller than that in the previous stirring step (but becomes larger when casting sand 41 is fed from the kneading unit 3 into the receiver 2 ). Therefore, in such cases, the optimum bulk density range (the predetermined range of current values) corresponding to the amount of casting sand 41 is set again. In this manner, in each stirring step, the optimum bulk density range (the predetermined range of current values) is set based on the amount of casting sand 41 in the receiver 2 .
  • the bulk density of casting sand 41 in the receiver 2 at the beginning of the stirring step is higher than the optimum bulk density range owing to the pressure applied from pressurized air in the previous blowing and packing step but the bulk density thereof at the end of the stirring step enters within the optimum bulk density range corresponding to the amount of casting sand 41 .
  • the casting sand 41 can be well packed into the cavity 36 .
  • the curing step is carried out. If the above steps are repeated in this manner, a large number of casting molds can be made.
  • the shutter drive mechanism 6 is actuated to put the shutter 5 to an open position, whereby casting sand 41 is fed from the kneading unit 3 into the receiver 2 .
  • casting sand 41 is stirred by the stirrer 21 prior to the blowing and packing of casting sand 41 into the cavity 36 , whereby the bulk density of casting sand 41 enters within the optimum bulk density range within which casting sand 41 can efficiently blow out through the blow nozzles 9 . Therefore, casting sand 41 can be constantly well packed into the cavity 36 .
  • the solvent on the sand particles is not reduced in the stirring step.
  • the solvent on the sand particles is reduced to a certain extent in the previous blowing and packing step, the amount of solvent thus reduced is supplementally fed by operating the solvent spray device 15 . This prevents the quality of a produced casting mold from being degraded.
  • the stirring resistance of the stirrer 21 is detected by the current detecting element 22b for detecting the value of current flowing into the drive motor 22a of the stirrer drive unit 22
  • the manner of detecting the stirring resistance of the stirrer 21 is not limited to this.
  • the stirrer 21 may be provided with a torque sensor and its stirring resistance may be detected by the torque sensor.
  • the casting sand amount sensor 16 may not be used, for example, in the case of making a large number of casting molds of the same configuration. Specifically, in this case, the amount of casting sand 41 reduced in a single blowing and packing step is substantially constant.
  • the solvent is supplementally fed into the receiver 2 prior to the stirring step
  • the solvent may be supplementally fed during the stirring step.
  • the solvent may not be fed or the amount of solvent fed may be small.
  • the solvent feed step antecedent to each stirring step may not be eliminated. This should not be a serious problem because the amount of solvent reduced in each blowing and packing step is very small.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Casting Devices For Molds (AREA)
EP07004056A 2006-03-08 2007-02-27 Verfahren und System zur Herstellung von Gussformen Expired - Fee Related EP1832358B8 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006063022A JP4706511B2 (ja) 2006-03-08 2006-03-08 鋳型造型方法及びその装置

Publications (3)

Publication Number Publication Date
EP1832358A1 true EP1832358A1 (de) 2007-09-12
EP1832358B1 EP1832358B1 (de) 2011-04-13
EP1832358B8 EP1832358B8 (de) 2011-09-21

Family

ID=38225841

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07004056A Expired - Fee Related EP1832358B8 (de) 2006-03-08 2007-02-27 Verfahren und System zur Herstellung von Gussformen

Country Status (5)

Country Link
US (1) US20070209772A1 (de)
EP (1) EP1832358B8 (de)
JP (1) JP4706511B2 (de)
CN (1) CN101032735B (de)
DE (1) DE602007013830D1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017077373A1 (en) * 2015-11-06 2017-05-11 Toyota Jidosha Kabushiki Kaisha Filling method and filling device for kneaded sand

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103551519A (zh) * 2013-11-14 2014-02-05 邵宏 无掉砂坭芯的制作方法与喷涂装置
TW201741047A (zh) * 2016-05-19 2017-12-01 Sintokogio Ltd 向砂漏斗供給鑄砂之鑄砂供給方法及裝置
JP6733564B2 (ja) * 2017-01-24 2020-08-05 新東工業株式会社 鋳型造型装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3934858A (en) * 1973-04-24 1976-01-27 Fordath, Limited Method and apparatus for mixing foundry materials
US3994332A (en) * 1975-04-21 1976-11-30 The Quaker Oats Company Apparatus and method for manufacturing cores and molds with means for independently releasing catalyst and resin mixes
JPS551961A (en) * 1978-06-22 1980-01-09 Sintokogio Ltd Casting-mold molding machine
US4196768A (en) * 1977-08-04 1980-04-08 Yamato Manufacturing Co., Ltd. Casting mold manufacturing process and apparatus therefor
JPS58196145A (ja) * 1982-05-08 1983-11-15 Sintokogio Ltd 鋳型造型方法
US4570694A (en) * 1982-01-25 1986-02-18 Lund Robert S Mold-blowing apparatus
US20040031580A1 (en) * 2002-08-15 2004-02-19 Smith Douglas W. Contour mold casting method

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4121646A (en) * 1976-10-13 1978-10-24 National Engineering Company Method and apparatus for making molds
JPS601101B2 (ja) * 1978-06-09 1985-01-11 新東工業株式会社 ブロ−ヘツド装置
JPS601100B2 (ja) * 1978-09-18 1985-01-11 新東工業株式会社 鋳型造型機
DE4208647C2 (de) * 1992-03-18 1995-06-29 Hottinger Adolf Masch Vorrichtung zum Schießen von Gießereikernen oder -formen mit Formstoffen
JPH07232233A (ja) * 1994-02-23 1995-09-05 Nagakawara Kinzoku:Kk 鋳物砂の再生方法
JPH08257679A (ja) * 1995-03-24 1996-10-08 Sintokogio Ltd 鋳物砂連続混練装置
JP3341626B2 (ja) * 1997-04-17 2002-11-05 三菱自動車工業株式会社 コールドボックス造型方法
CN1214881C (zh) * 2000-02-17 2005-08-17 新东工业株式会社 充填铸造型砂的装置和方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3934858A (en) * 1973-04-24 1976-01-27 Fordath, Limited Method and apparatus for mixing foundry materials
US3994332A (en) * 1975-04-21 1976-11-30 The Quaker Oats Company Apparatus and method for manufacturing cores and molds with means for independently releasing catalyst and resin mixes
US4196768A (en) * 1977-08-04 1980-04-08 Yamato Manufacturing Co., Ltd. Casting mold manufacturing process and apparatus therefor
JPS551961A (en) * 1978-06-22 1980-01-09 Sintokogio Ltd Casting-mold molding machine
US4570694A (en) * 1982-01-25 1986-02-18 Lund Robert S Mold-blowing apparatus
JPS58196145A (ja) * 1982-05-08 1983-11-15 Sintokogio Ltd 鋳型造型方法
US20040031580A1 (en) * 2002-08-15 2004-02-19 Smith Douglas W. Contour mold casting method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"MIXING WITH THE EXPERTS", FOUNDRY TRADE JOURNAL, INSTITUTE OF CAST METALS ENGINEERS, WEST BROMWICH, GB, vol. 175, no. 3578, May 2001 (2001-05-01), pages 28 - 29, XP001102817, ISSN: 0015-9042 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017077373A1 (en) * 2015-11-06 2017-05-11 Toyota Jidosha Kabushiki Kaisha Filling method and filling device for kneaded sand
RU2690376C1 (ru) * 2015-11-06 2019-06-03 Тойота Дзидося Кабусики Кайся Способ заполнения и устройство заполнения для смешанного песка

Also Published As

Publication number Publication date
DE602007013830D1 (de) 2011-05-26
JP2007237234A (ja) 2007-09-20
US20070209772A1 (en) 2007-09-13
EP1832358B1 (de) 2011-04-13
JP4706511B2 (ja) 2011-06-22
CN101032735A (zh) 2007-09-12
CN101032735B (zh) 2011-07-20
EP1832358B8 (de) 2011-09-21

Similar Documents

Publication Publication Date Title
EP1832360B1 (de) System zur Herstellung von Gussformen
EP1832358A1 (de) Verfahren und System zur Herstellung von Gussformen
US6188936B1 (en) Gravimetric blender with operatively coupled bar code reader
EP3037235B1 (de) Vorrichtung und Verfahren für geschmolzene Kunststoffmaterialzufuhr zu einem Formhohlraum
US10953579B2 (en) Small format reaction injection molding machines and components for use therein
US10639842B2 (en) Three-dimensional printing control
KR102630012B1 (ko) 3차원 인쇄 제어
WO2008116006A1 (en) System and method for distributing building materials in a controlled manner
EP1007198A1 (de) Vorrichtung zum auftragen von multikomponentenzusammensetzungen
EP3990259A1 (de) Druckkopfsystem eines 3d-druckers mit aushärtungsmodul auf einer rotationsplattform
CN214977525U (zh) 一种砂型3d打印机的在线自动混砂装置
CN113512482A (zh) 培养基制作系统
CN103252458A (zh) 一种全自动无模砂型制造系统
EP1359117A1 (de) Abfüllvorrichtung und verfahren
JP2002205339A (ja) 粉末材料除去装置
CN114630742A (zh) 自清洁重量和体积定量给料设备
JPH08133474A (ja) 圧送加圧タンクと粉体定量圧送装置及び方法
JP2701001B2 (ja) 造型室内に粒状材料を吹込むことにより鋳型または鋳型部分を製造する方法および装置
CN107027647A (zh) 一种养猪饲喂装置及其控制方法
CN108622675B (zh) 一种风送式矢量称重给料系统及控制方法
CN215877682U (zh) 一种涂料生产用自动计量系统
RU2800275C1 (ru) Вакуумная литьевая машина
JP2002225031A (ja) 粉粒体の供給装置および粉粒体の供給方法
CN111919773A (zh) 投料设备、投料方法以及动物实验舱
JP2008068273A (ja) 鋳型造型方法及びその装置

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): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

17P Request for examination filed

Effective date: 20080306

17Q First examination report despatched

Effective date: 20080402

AKX Designation fees paid

Designated state(s): DE

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE

REF Corresponds to:

Ref document number: 602007013830

Country of ref document: DE

Date of ref document: 20110526

Kind code of ref document: P

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602007013830

Country of ref document: DE

Effective date: 20110526

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: MAZDA MOTOR CORPORATION

REG Reference to a national code

Ref country code: DE

Ref legal event code: R084

Ref document number: 602007013830

Country of ref document: DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R084

Ref document number: 602007013830

Country of ref document: DE

Effective date: 20110831

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20120116

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602007013830

Country of ref document: DE

Effective date: 20120116

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20200211

Year of fee payment: 14

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602007013830

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210901