CN101032735A - Casting mold making method and casting mold making system - Google Patents
Casting mold making method and casting mold making system Download PDFInfo
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- CN101032735A CN101032735A CNA2007100847018A CN200710084701A CN101032735A CN 101032735 A CN101032735 A CN 101032735A CN A2007100847018 A CNA2007100847018 A CN A2007100847018A CN 200710084701 A CN200710084701 A CN 200710084701A CN 101032735 A CN101032735 A CN 101032735A
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- foundry sand
- incorporating section
- mixing component
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- 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
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- 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
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- 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
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- 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
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Casting Devices For Molds (AREA)
Abstract
In blowing gas-curing casting sand 41, which is accommodated in a receiver 2 of a blow head 1, into a cavity 36 in molding dies 35 and thereby packing it into the cavity 36, prior to the blowing and packing of the casting sand 41 into the cavity 36, the casting sand 41 in the receiver 2 is stirred by a stirrer 21 until the stirring resistance of the stirrer 21 enters a predetermined range (a range corresponding to an optimum bulk density range of casting sand within which casting sand 41 can efficiently blow out through blow nozzles 9.
Description
Technical field
Thereby the invention belongs to a kind of and the moldings formed therefrom method technical field relevant that gas curing property foundry sand is blown in the chamber that is filled to loose tool with casting mold making system.
Background technology
Up to the present, for example Ri Ben spy opens in the flat 3-47647 communique the disclosed method that makes moldings formed therefrom for known to everybody, this method is such, gas curing property foundry sand that will contain earlier bonding agent (phenolic resin and polyisocyanate salt compound) and solvent (toluene etc.) in blow head is taken in, gas-pressurized is fed in this blow head then, thereby be blown into described foundry sand in the chamber that is filled to loose tool by blow gun, to solidify again with the foundry sand that will be filled in this chamber in the described chamber of gas (triethylamine etc.) importing and solidify, so promptly can be made into mold.
For example disclosed way is also known in the TOHKEMY 2001-225148 communique.Make the liquidation of swimming of foundry sand in the blow head (hopper) by air, by cutting knife sand lump is smashed to pieces simultaneously, afterwards, be filled in the chamber thereby utilize forced air that foundry sand is blown into again.
Above-mentioned such gas curing property foundry sand is because the sand surface is owing to bonding agent has cementability, so the apparent density instability of the foundry sand in the blow head.The result is just to be difficult to guarantee that the filling that foundry sand is filled in the chamber is good always.
Opening in the 2001-225148 communique disclosed way above-mentioned spy can expect, thus promptly foundry sand is blown into be filled in the chamber before, make the foundry sand liquidation of swimming by air, by cutting knife sand lump is smashed to pieces simultaneously.
But, if this method is applied to this gas curing property foundry sand, following problem will appear.In other words, if make foundry sand swim liquidation and air be blown into, then blown away by air attached to the lip-deep solvent of sand with bonding agent.So, the concentration of the bonding agent on sand surface can improve, and curing reaction can quicken.Therefore, in the chamber that foundry sand is filled to loose tool before, foundry sand just has cured, the quality of mold just descends.In addition, allowing under foundry sand passes through in order to the situation with the cutting knife of sand lump chopping, the possibility that the solvent on sand surface reduces also can improve.
Summary of the invention
The present invention develops for addressing the above problem just, its purpose is: as the above, thereby gas curing property foundry sand is blown under the situation in the chamber that is filled to loose tool, guarantee good and stable filling, and this foundry sand is solidified.
For reaching above-mentioned purpose, in the present invention, thereby the foundry sand in the blow head is blown into be filled in the chamber before, with mixing component this foundry sand is stirred, the stirring Resistance Value that directly is stirred to this mixing component enters in the prescribed limit.
Particularly, moldings formed therefrom method of the present invention comprises: be blown into filling procedure and curing process.In being blown into filling procedure, gas-pressurized being fed in this incorporating section of the blow head with the incorporating section of taking in gas curing property foundry sand, thereby the foundry sand in this incorporating section being blown in the chamber that is filled to loose tool by be communicated with the blow gun of establishing with the incorporating section.In curing process, described be blown into filling procedure after, import in the described chamber and the foundry sand that is filled in this chamber solidified solidifying with gas.Described be blown into filling procedure before, comprising: the stirring Resistance Value that the foundry sand in the described incorporating section is stirred to this mixing component with mixing component enters the agitating procedure in the prescribed limit.
So, thus foundry sand is blown into be filled in the chamber before, the foundry sand in the incorporating section is stirred and fluffs.If the apparent density of foundry sand is excessive, the foundry sand gambling is difficult to come out from this blow gun at blow gun.On the other hand, if foundry sand is loose excessively, apparent density is too small, then only is that gas-pressurized appears from blow gun, and at this moment foundry sand also is difficult to produce by boasting from blow gun.That is to say, exist the best apparent density scope that a foundry sand blows out efficiently from blow gun.On the other hand, if the foundry sand of incorporating section is not stirred, then the apparent density of foundry sand is bigger than best apparent density scope usually, and the number of times that is blown into filling procedure is many more, and the apparent density of foundry sand is because the pressurization of gas-pressurized and increasing.So, before being blown into filling procedure, the foundry sand in the incorporating section being stirred and the apparent density of foundry sand is entered in the described best apparent density scope with mixing component.In other words, because the stirring Resistance Value of mixing component is corresponding mutually with the apparent density of foundry sand, apparent density is big more, it is big more to stir Resistance Value, so if will be set at prescribed limit corresponding to the scope of the stirring Resistance Value of described best apparent density scope, foundry sand is stirred to enters in this prescribed limit, just can obtain best apparent density.So, in being blown into filling procedure, foundry sand is filled in the chamber always well.And, because in agitating procedure, only foundry sand is stirred,, can mix bonding agent, solvent and sand more even on the contrary so can not reduce at the solvent on agitating procedure medium sand surface.Therefore be very desirable.
Preferably, in described moldings formed therefrom method, described agitating procedure, be blown into filling procedure and curing process repeats, described prescribed limit is the scope that described each agitating procedure is set.Better is, described prescribed limit is the scope that the foundry sand amount in the described incorporating section is set out when carrying out described each agitating procedure.
After doing like this, just can suitably set prescribed limit according to the foundry sand amount in the incorporating section in each agitating procedure.That is to say, once be blown into filling procedure, the foundry sand amount in the incorporating section just tails off, and reduction is exactly the amount that is filled in the chamber.Add under the situation of incorporating section at this a part of foundry sand that will not reduce, in next agitating procedure, the foundry sand amount just with a last agitating procedure in different.After the such difference of foundry sand amount, the relation between the stirring Resistance Value of the apparent density of foundry sand and mixing component also can change.But, in the present invention, in each agitating procedure, can will be set at prescribed limit corresponding to the scope of the stirring Resistance Value of best apparent density according to the foundry sand amount, therefore,, can both obtain good and stable filling no matter be which agitating procedure.
Preferably, in described moldings formed therefrom method, described foundry sand contains bonding agent and solvent.Before carrying out described agitating procedure or carrying out in the process of agitating procedure, comprise the solvent make-up operation of described solvent make-up in the described incorporating section.
So, particularly repeating agitating procedure, be blown under the situation of filling procedure and curing process, the solvent that can suppress the sand surface reduces.In other words, in being blown into filling procedure, thereby for foundry sand being blown into be filled in the chamber gas-pressurized is fed in the incorporating section, the solvent on sand surface can have flying out and reduce to a certain degree owing to this gas-pressurized.But, in the present invention, can will come on that a part of solvent make-up that reduce, descend so can prevent the mold quality.And, even like this with coming on the solvent make-up, can utilize the stirring in the agitating procedure that bonding agent, solvent and sand are mixed equably, thereby solvent can not appear in the too much phenomenon of certain part yet in the incorporating section.
Casting mold making system of the present invention comprises: have incorporating section that gas curing property foundry sand is taken in and be communicated with this incorporating section and the blow head of the blow gun established and gas-pressurized is fed to pressurized gas supply device in the incorporating section of this blow head.This casting mold making system constitutes: utilize this pressurized gas supply device that gas-pressurized is fed in the described incorporating section, thereby the foundry sand in this incorporating section is blown in the chamber that is filled to loose tool by described blow gun.This casting mold making system comprises: the mixing component that the foundry sand in the described incorporating section is stirred, drive the mixing component drive unit of described mixing component, detect the stirring Resistance Value checkout gear of the stirring Resistance Value of described mixing component, control the duty control device of the duty of described mixing component drive unit.Described duty control device constitutes: before gas-pressurized being fed in the described incorporating section by described pressurized gas supply device, till allowing the work of described mixing component drive unit work to enter in the prescribed limit by the detected stirring Resistance Value of described stirring Resistance Value checkout gear always.
Preferably, in described casting mold making system, comprise the foundry sand amount detecting device that the foundry sand amount in the described incorporating section is detected.And described operation control device constitutes: according to setting described prescribed limit by the detected foundry sand amount of described foundry sand amount detecting device.
Preferably, in described casting mold making system, described foundry sand contains bonding agent and solvent.Casting mold making system comprises: by described duty control device control duty, described solvent is sprayed onto in the described incorporating section and with the solvent spray device on the described solvent make-up in the mode of spraying.Described duty control device constitutes: before the work of described mixing component drive unit or allow the work of described solvent spray device in the course of work, with described solvent make-up in described incorporating section.
According to the structure of described casting mold making system, be easy to carry out described moldings formed therefrom method, thereby can receive effect, the effect the same with described moldings formed therefrom method.
The simple declaration of accompanying drawing
Fig. 1 is a summary construction diagram, shows the related casting mold making system of embodiments of the invention.
Fig. 2 be one show the apparent density of the foundry sand in the incorporating section and the kinetic energy of the foundry sand that from blow gun, blows out between the curve map of relation.
Fig. 3 one shows the curve map of the relation between the stirring Resistance Value of the apparent density of the foundry sand in the incorporating section and mixing component.
Fig. 4 is the flow chart of the processing sequence of a display control unit.
The specific embodiment
Below, with reference to the accompanying drawings, embodiments of the invention are described.
Fig. 1 is shown schematically in the related casting mold making system of embodiments of the invention, and this casting mold making system is the ice chest casting mold making system, comprises the blow head 1 with incorporating section 2 that gas curing property foundry sand 41 is taken in.Described foundry sand 41 contains bonding agent and the solvent that is formed by phenolic resin and polyisocyanate salt compound, and the sand surface is covered by this bonding agent and solvent.Phenolic resin in the described bonding agent is the molecule phenol, the linear phenol-aldehyde resin that contain the dibenzyl ether or the resin of being derived out by them.These polyisocyanate salt compounds are for example diphenylmethane diisocyanate (diphenylmethane diisocyanate), the own diester of two isocyanic acids (hexamethylenediisocyanate), 4-4 ' dicyclohexyl alkane diisocyanate (4,4 '-dicyclohexylmethanediisocyanate) etc.Described solvent is organic solvent or their mixtures such as aliphatic hydrocarbon, alicyclic hydrocarbon type, arene, halogenated hydrocarbon, ketone, ester class, ethers, alcohol type.
Described foundry sand 41 is fed to incorporating section 2 from the kneading portion 3 that is arranged on described incorporating section 2 upsides.That is to say that dropped into described bonding agent, solvent and sand in the kneading portion 3, the kneader 4 that they are rotated by driving is mediated equably, become the foundry sand 41 that sand surface is as mentioned above covered by bonding agent and solvent.Be provided with the gate 5 of opening, closing under the effect of gate driving mechanism 6 between incorporating section 2 and kneading portion 3, this gate driving mechanism 6 is by control device 31 controls.If by gate driving mechanism 6 described gate 5 is opened, gas curing property foundry sand 41 just falls and is supplied to the incorporating section 2 from kneading portion 3 by deadweight.
Below described blow head 1, be provided with a plurality of blow guns 9 in order to the foundry sand 41 in the described incorporating section 2 is blown out, and this blow gun 9 and 2 connections of this incorporating section.This blow gun 9 is in the face of chamber 36, and this chamber 36 is formed by a plurality of loose tools 35 that are arranged on this casting mold making system downside.The foundry sand 41 that blows out from blow gun 9 is filled in the chamber 36, is the shape of the mold of being made by this casting mold making system.Mold as being made by this casting mold making system for example has: the mold of cylinder block, cylinder head, the water(-cooling) jacket of cylinder head are with interior ring etc.
The top of the side wall surface of the incorporating section 2 in constituting described blow head 1 is provided with in order to will feed to the air supply port 1a in the incorporating section 2 as the forced air of gas-pressurized.This air supply port 1a is via being connected on the watertight aircase 12 by the magnetic valve 11 of described control device 31 its working conditions of control, factory's air feed is conditioned the state that the device (not shown) is adjusted to certain pressure (about 0.2Mpa～1MPa), and be supplied in the watertight aircase 12, store as described forced air.Magnetic valve 11 is worked at the beginning, and the forced air in the watertight aircase 12 is just fed in the incorporating section 2.Thereby the foundry sand 41 in the incorporating section 2 just is blown in the chamber 36 that is filled to loose tool 35 via described blow gun 9.So, magnetic valve 11, watertight aircase 12 and control device 31 just constitute gas-pressurized are fed to pressurized gas supply device in the incorporating section 2.Remark additionally and gas-pressurizeds that foundry sand 41 is blown in the chamber 36 together drain to outside the chamber 36 by the air vent 37 that is installed in loose tool 35 bottoms.
The top that constitutes the side wall surface of described incorporating section 2 be provided with in order to described solvent make-up to the incorporating section solvent supply port 1b in 2.This solvent supply port 1b is with 2 interior solvent spray devices 15 are connected to the incorporating section with described solvent make-up by spraying.This solvent spray device 15 was started working before the drive motor 22a of mixing component drive unit 22 described later work by described control device 31 its duties of control, arrived in the incorporating section 2 by the solvent make-up of spraying with ormal weight.That is to say, thereby because last once foundry sand 41 is blown into be filled to chamber 36 in, the solvent on the sand surface part that how much flies out owing to forced air reduces, so the amount of the amount of the solvent that is replenished and the solvent that reduced equates substantially.
Besides, the top in the incorporating section 2 of described blow head 1 is provided with the foundry sand quantity detection sensor 16 of conduct in order to the foundry sand amount detecting device of the amount of the foundry sand 41 in the detection incorporating section 2.In this embodiment, this foundry sand quantity detection sensor 16 receives infrared ray is released to the foundry sand 41 reflections next infrared ray of below by topmost, utilizes ultrared intensity to detect the amount of the foundry sand 41 in the incorporating section 2, moreover, can also use the sensor of other structure.The information of the amount of the foundry sand 41 in the incorporating section of being detected by this foundry sand quantity detection sensor 16 2 is imported in the described control device 31.
And the bottom in the incorporating section 2 of described blow head 1 is provided with the mixing component 21 that the foundry sand in the incorporating section 2 41 is stirred.This mixing component 21 fluffs foundry sand 41, makes it become the apparent density of the such the best of aftermentioned.This mixing component 21 comprises: extend and supported the rotating shaft 21a that can rotate, be fixed on this rotating shaft 21a bottom and the substrate 21b that extends along horizontal direction and be arranged on a plurality of stirring rod 21c on this substrate 21b along above-below direction.The upper end of described rotating shaft 21a is connected with mixing component drive unit 22.Omission is to the explanation of the detailed structure of this mixing component drive unit 22, but this mixing component drive unit 22 comprises: drive motor 22a, the attaching parts that for example are made of lead-in wire that can free bend etc. that the rotating shaft of this drive motor 22a and described rotating shaft 21a are coupled together and in order to the drive circuit that drives drive motor 22a etc.Be provided with in this drive circuit and detect the current detecting part 22b that flows into the current value among the drive motor 22a.
The drive motor 22a of described mixing component drive unit 22 is by described control device 31 controls.That is to say that control device 31 constitutes the duty control device of the duty of the drive motor 22 of controlling mixing component drive unit 22.In the process of drive motor 22a work, the information of the current value that is detected by described current detecting part 22b is imported in the described control device 31.
Thereby the foundry sand in the incorporating section 2 41 is blown into be filled to chamber 36 before, till described control device 31 allows described drive motor 22a start working to work the stirring Resistance Value of mixing component 21 to enter in the prescribed limit always.In this embodiment, detect the stirring Resistance Value of mixing component 21 by described current detecting part 22b.That is to say, the current value of drive motor 22a with allow the needed motor torque of described mixing component 21 rotations, just the stirring Resistance Value of mixing component 21 is corresponding.The stirring Resistance Value of mixing component 21 is big more, and the current value of drive motor 22a just increases.Therefore, in advance the prescribed limit according to described stirring Resistance Value configures the rated current scope, till the current value that allows 22 work of mixing component drive unit always work to be detected by described current detecting part 22b enters in the rated current scope.So described current detecting part 22b constitutes the stirring Resistance Value checkout gear that the stirring Resistance Value to mixing component 21 detects.
The prescribed limit of described stirring Resistance Value, rated current scope just is set in the scope that the foundry sands 41 in the incorporating section 2 blow out from blow gun 9 efficiently.Here, make the amount of the foundry sand 41 in the incorporating section 2 necessarily constant, change the apparent density of this foundry sand 41, studied the apparent density of foundry sand 41 and, the results are shown in Fig. 2 by the relation between the speed of the foundry sand 41 that blows out from blow gun 9 and the kinetic energy that quality is obtained.In other words, it is maximum or approach maximum apparent density scope to exist kinetic energy, just the best apparent density scope that blows out efficiently from blow gun 9 of foundry sand 41.Reason is as follows: if the apparent density of foundry sand 41 is excessive, then foundry sand 41 can gambling be difficult to come out from this blow gun 99 li of blow guns.On the other hand, too small if foundry sand 41 is crossed loose apparent density, then only there is forced air from blow gun 9, to spill, this moment, foundry sand 41 also was difficult to come out from blow gun 9.
Analysis result to the relation between the apparent density of foundry sand 41 and the stirring Resistance Value of mixing component 21 (motor torque of drive motor) is shown in Fig. 3.The stirring Resistance Value of mixing component 21 is corresponding with the apparent density of foundry sand 41, and apparent density is big more, and it is big more to stir Resistance Value.Therefore, will be set at described prescribed limit, will be set at described rated current scope corresponding to the current range of this prescribed limit corresponding to the scope of the stirring Resistance Value of described best apparent density scope.
Because described best apparent density scope changes along with the amount of the foundry sand 41 in the incorporating section 2, so decision detects the amount of foundry sand 41 with described foundry sand quantity detection sensor 16.That is to say what a table the ex ante analysis once amount and the relation between the best apparent density scope (just described rated current scope) of foundry sand 41 makees, and this table is stored in the described control device 31 again.Afterwards, control device 31 receives the information from the amount of the relevant foundry sand 41 of foundry sand quantity detection sensor 16, sets the rated current scope corresponding to the amount of this foundry sand 41 according to described table.
When lacking than ormal weight by the amount of described foundry sand quantity detection sensor 16 detected foundry sands 41, just the quantitative change of Sheng Xia foundry sand 41 is few, when the amount of remaining foundry sand 41 is less than the amount that need be filled to the foundry sand in the chamber 36, control device 31 allows gate driving mechanism 6 start working, and foundry sand 41 is fed to the incorporating section 2 from kneading portion 3.
Then, the limit is with reference to the flow chart among the figure 4, and the limit describes the processing sequence of described control device 31.
At first,, allow solvent spray device 15 start working, arrive in the incorporating section 2,, set out the rated current scope at next procedure S2 by the solvent make-up of spraying with ormal weight at initial step S1.That is to say, according to setting out the rated current scope by the amount and the described table of foundry sand quantity detection sensor 16 detected foundry sands 41.
Then,, allow the drive motor 22a of mixing component drive unit 22 start working, at next procedure S4, to whether in the rated current scope, judging by the detected current value of current detecting part 22b at next procedure S3.
If the judgement in described step S4 is a "No", then return step S3.On the other hand,, then enter step S5, allow drive motor 22a quit work if the judgement in step S4 is a "Yes".At next procedure S6, allow magnetic valve 11 start working, the forced air of watertight aircase 12 is fed in the incorporating section 2.
At next procedure S7, judge whether to lack than ormal weight by the amount of foundry sand quantity detection sensor 16 detected foundry sands 41, when the judgement in this step S7 is "No", then allow this processing release.On the other hand, when the judgement in this step S7 is "Yes", then enter step S8, allow gate driving mechanism 6 start working, allow this processing release afterwards.
Next, the method that makes moldings formed therefrom with described casting mold making system is described.
At first, loose tool 35 is installed in the described casting mold making system, console switch etc. allow casting mold making system start working.So incorporating section 2 is just replenished the solvent (solvent make-up operation) of having gone up ormal weight.Afterwards, the substrate 21b of mixing component 21 is around rotating shaft 21a rotation, and the foundry sand 41 in the incorporating section 2 is stirred and fluff (agitating procedure) by a plurality of stirring rod 21c that are arranged on this substrate 21b.At this moment, bonding agent, solvent (containing this part of replenishing up) and sand are mixed equably.When just beginning to drive mixing component 21, the apparent density of the foundry sand 41 in the incorporating section 2 is bigger than described best apparent density usually, diminishes gradually under the stirring of mixing component 21, promptly becomes best apparent density scope soon.So, enter in the rated current scope, promptly stop to drive mixing component 21 by the detected current value of current detecting part 22b.
Then, the forced air of watertight aircase 12 is fed in the incorporating section 2, so, thereby the foundry sands 41 in the incorporating section 2 just are blown in the chamber 36 that is filled to loose tool 35 (being blown into filling procedure) via blow gun 9.Before this was blown into filling procedure, the apparent density that has made foundry sand 41 was in the best apparent density scope that foundry sand 41 blows out from blow gun 9 efficiently, so be blown in the filling procedure at this, foundry sand 41 is filled in the chamber 36 well.
In this embodiment, described be blown into filling procedure after, described loose tool 35 is moved on to the curing do not shown with gas gatherer there, and is installed in this curings usefulness gas gatherer.To be will solidifying of being provided with in addition with the gas gatherer import the interior device in chamber 36 of this loose tool 35 with gas in this curing.Afterwards, will solidify with gas (for example triethylamine gas) with the gas gatherer by this curing and import in the chamber 36, and allow the foundry sands 41 that are filled in this chamber 36 solidify (curing process), finish the moulding of the second best in quality mold like this.
If make next new moldings formed therefrom come once more loose tool 35 to be installed in the casting mold making system, allow casting mold making system start working once more, then with described the same, carry out solvent make-up operation, agitating procedure successively and be blown into filling procedure.Though fly out to a certain extent, reduce owing to forced air at the last solvent that is blown into filling procedure medium sand surface once, in the solvent make-up operation at this moment, can be with on the solvent make-up that is reduced.
In agitating procedure next time, bonding agent, solvent (containing described that part of replenishing up) and sand are further mixed equably.Generally, compare with last agitating procedure, the amount of foundry sand 41 can reduce (but when kneading portion 3 is fed to incorporating section 2 with foundry sand 41, it is many that the amount of foundry sand 41 can become), be set corresponding to the best apparent density scope (rated current scope) of the amount of this foundry sand 41.Amount according to the foundry sand in the incorporating section 2 41 configures best apparent density scope (rated current scope) in each agitating procedure like this, then agitating procedure just at first, the apparent density of the foundry sand 41 in the incorporating section 2 is blown into the pressurization of the forced air in the filling procedure than this best apparent density scope height owing to last, when agitating procedure finishes, then become best apparent density scope corresponding to the amount of foundry sand 41.So, in being blown into filling procedure, foundry sand 41 just is filled in the chamber 36 well.After this is blown into filling procedure, with the above-mentioned the same operation that is cured.By repeating each operation like this, promptly can make a plurality of moldings formed therefroms.
Remark additionally, under the situation that each amount that is blown into foundry sand 41 after the filling procedure is lacked than ormal weight, allow gate driving mechanism 6 start working gate 5 is opened, foundry sand 41 is fed to the incorporating section 2 from kneading portion 3.
Therefore, in described embodiment, thereby foundry sand 41 is blown into be filled in the chamber 36 before, stir by 21 pairs of foundry sands 41 of mixing component, and the apparent density that makes foundry sand 41 is in the best apparent density that foundry sand 41 blows out efficiently from blow gun 9, so can well foundry sand 41 be filled in the chamber 36 always.
Because in agitating procedure, only foundry sand 41 is stirred, so can not reduce at the solvent on agitating procedure medium sand surface.On the other hand, be blown in the filling procedure,, can descend so can suppress the quality of mold by allowing solvent spray device 15 start working on that a part of solvent make-up that to be reduced though solvent more or less reduces described.
Remark additionally, in described embodiment, the current detecting part 22b that allows current value to the drive motor 22a that flows through mixing component drive unit 22 detect detects the stirring Resistance Value of mixing component 21, but be not limited to this, for example can also in mixing component 21, torque sensor be set, detect the stirring Resistance Value of mixing component 21 with this torque sensor.
In described embodiment, the amount by 16 pairs of foundry sands 41 of foundry sand quantity detection sensor in each agitating procedure detects, and moreover, also is to manage it without this foundry sand quantity detection sensor 16.In other words, under the situation that makes a plurality of identical moldings formed therefroms, because the amount at the foundry sand 41 that once is blown in the filling procedure to be reduced is roughly certain, so when carry out stipulated number be blown into filling procedure the time, if the foundry sand 41 of ormal weight (stipulated number * once be blown into the reduction in the filling procedure) is fed to incorporating section 2 from kneading portion 3, know the amount of the foundry sand 41 of each agitating procedure earlier with regard to what one is particularly good at, so as long as in advance the best apparent density scope (rated current scope) corresponding to the amount of foundry sand 41 in each agitating procedure is stored in the control device 31.
In described embodiment, be before agitating procedure with solvent make-up in incorporating section 2, moreover, can also be in agitating procedure will come on the solvent make-up.Start working at gate driving mechanism 6, just with after foundry sand 41 is in kneading portion 3 is fed to incorporating section 2, supplementing solvent can not make the magnitude of recruitment of solvent few yet.Even the solvent make-up operation before each agitating procedure itself is deleted, also can be seldom because of the reduction of solvent in being blown into filling procedure, and any big problem can not appear.
Claims (7)
1. moldings formed therefrom method, comprise: be blown into filling procedure and curing process, be blown in the filling procedure described, gas-pressurized is fed in this incorporating section of the blow head with the incorporating section of taking in gas curing property foundry sand, thereby the foundry sand in this incorporating section is blown in the chamber that is filled to loose tool by be communicated with the blow gun of establishing with the incorporating section, in described curing process, described be blown into filling procedure after, import in the described chamber and the foundry sand that is filled in this chamber solidified solidifying, it is characterized in that with gas:
This moldings formed therefrom method comprises: described be blown into filling procedure before, the agitating procedure till the stirring Resistance Value that the foundry sand in the described incorporating section is stirred to this mixing component with mixing component enters in the prescribed limit.
2. moldings formed therefrom method according to claim 1 is characterized in that:
Repeat described agitating procedure, be blown into filling procedure and curing process;
Described prescribed limit is the scope that described each agitating procedure is set.
3. moldings formed therefrom method according to claim 2 is characterized in that:
Described prescribed limit is the scope that the foundry sand amount in the described incorporating section is set out when carrying out described each agitating procedure.
4. moldings formed therefrom method according to claim 1 is characterized in that:
Described foundry sand contains bonding agent and solvent;
This moldings formed therefrom method comprises: before carrying out described agitating procedure or carry out in the process of described agitating procedure, with the solvent make-up operation of described solvent make-up in the described incorporating section.
5. casting mold making system, comprise: have and take in that gas solidifies the incorporating section of property foundry sand and be communicated with this incorporating section and the blow head of the blow gun established and gas-pressurized is fed to pressurized gas supply device in the incorporating section of this blow head, this casting mold making system constitutes: by this pressurized gas supply device gas-pressurized is fed in the described incorporating section, by described blow gun thereby the foundry sand in this incorporating section is blown in the chamber that is filled to loose tool, it is characterized in that:
This casting mold making system comprises:
The mixing component that foundry sand in the described incorporating section is stirred,
Drive the mixing component drive unit of described mixing component,
Detect the stirring Resistance Value checkout gear of the stirring Resistance Value of described mixing component, and
Control the duty control device of the duty of described mixing component drive unit;
Described duty control device constitutes: before gas-pressurized being fed in the described incorporating section by described pressurized gas supply device, allow the work of described mixing component drive unit, work always enter in the prescribed limit by the detected stirring Resistance Value of described stirring Resistance Value checkout gear till.
6. casting mold making system according to claim 5 is characterized in that:
This casting mold making system comprises: the foundry sand amount detecting device that the foundry sand amount in the described incorporating section is detected;
Described duty control device constitutes: according to setting described prescribed limit by the detected foundry sand amount of described foundry sand amount detecting device.
7. casting mold making system according to claim 5 is characterized in that:
Described foundry sand contains bonding agent and solvent;
This casting mold making system comprises: by described duty control device control duty, described solvent is sprayed onto in the described incorporating section and with the solvent spray device on the described solvent make-up in the mode of spraying;
Described duty control device constitutes: allow the work of described solvent spray device before the work of described mixing component drive unit or in the process of working, with described solvent make-up in described incorporating section.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006063022A JP4706511B2 (en) | 2006-03-08 | 2006-03-08 | Mold making method and apparatus |
| JP2006-063022 | 2006-03-08 | ||
| JP2006063022 | 2006-03-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101032735A true CN101032735A (en) | 2007-09-12 |
| CN101032735B CN101032735B (en) | 2011-07-20 |
Family
ID=38225841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100847018A Expired - Fee Related CN101032735B (en) | 2006-03-08 | 2007-02-26 | Casting mold making method and casting mold making system |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20070209772A1 (en) |
| EP (1) | EP1832358B8 (en) |
| JP (1) | JP4706511B2 (en) |
| CN (1) | CN101032735B (en) |
| DE (1) | DE602007013830D1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103551519A (en) * | 2013-11-14 | 2014-02-05 | 邵宏 | Manufacturing method of non-drop-sand mud core and spraying device |
| CN107921525A (en) * | 2016-05-19 | 2018-04-17 | 新东工业株式会社 | To the molding sand supply method and molding sand feedway of sand hopper supply molding sand |
| CN108348988A (en) * | 2015-11-06 | 2018-07-31 | 丰田自动车株式会社 | Fill method and filling device for mulling |
| CN108339948A (en) * | 2017-01-24 | 2018-07-31 | 新东工业株式会社 | Casting mold device |
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|---|---|---|---|---|
| GB1431193A (en) * | 1973-04-24 | 1976-04-07 | Fordath Ltd | 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 |
| US4121646A (en) * | 1976-10-13 | 1978-10-24 | National Engineering Company | Method and apparatus for making molds |
| US4196768A (en) * | 1977-08-04 | 1980-04-08 | Yamato Manufacturing Co., Ltd. | Casting mold manufacturing process and apparatus therefor |
| JPS601101B2 (en) * | 1978-06-09 | 1985-01-11 | 新東工業株式会社 | blowhead device |
| JPS601099B2 (en) * | 1978-06-22 | 1985-01-11 | 新東工業株式会社 | mold making machine |
| JPS601100B2 (en) * | 1978-09-18 | 1985-01-11 | 新東工業株式会社 | mold making machine |
| US4570694A (en) * | 1982-01-25 | 1986-02-18 | Lund Robert S | Mold-blowing apparatus |
| JPS58196145A (en) * | 1982-05-08 | 1983-11-15 | Sintokogio Ltd | Mold forming method |
| DE4208647C2 (en) * | 1992-03-18 | 1995-06-29 | Hottinger Adolf Masch | Device for shooting foundry cores or molds with molding materials |
| JPH07232233A (en) * | 1994-02-23 | 1995-09-05 | Nagakawara Kinzoku:Kk | Method reconditioning molding sand |
| JPH08257679A (en) * | 1995-03-24 | 1996-10-08 | Sintokogio Ltd | Device for continuously kneading molding sand |
| JP3341626B2 (en) * | 1997-04-17 | 2002-11-05 | 三菱自動車工業株式会社 | Cold box molding method |
| CN1214881C (en) * | 2000-02-17 | 2005-08-17 | 新东工业株式会社 | Method and device for filling casting sand |
| US20040031580A1 (en) * | 2002-08-15 | 2004-02-19 | Smith Douglas W. | Contour mold casting method |
-
2006
- 2006-03-08 JP JP2006063022A patent/JP4706511B2/en active Active
-
2007
- 2007-02-26 CN CN2007100847018A patent/CN101032735B/en not_active Expired - Fee Related
- 2007-02-27 EP EP07004056A patent/EP1832358B8/en not_active Expired - Fee Related
- 2007-02-27 DE DE602007013830T patent/DE602007013830D1/en active Active
- 2007-03-06 US US11/682,591 patent/US20070209772A1/en not_active Abandoned
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103551519A (en) * | 2013-11-14 | 2014-02-05 | 邵宏 | Manufacturing method of non-drop-sand mud core and spraying device |
| CN108348988A (en) * | 2015-11-06 | 2018-07-31 | 丰田自动车株式会社 | Fill method and filling device for mulling |
| CN108348988B (en) * | 2015-11-06 | 2020-08-11 | 丰田自动车株式会社 | Filling method and filling device for sand mulling |
| CN107921525A (en) * | 2016-05-19 | 2018-04-17 | 新东工业株式会社 | To the molding sand supply method and molding sand feedway of sand hopper supply molding sand |
| CN108339948A (en) * | 2017-01-24 | 2018-07-31 | 新东工业株式会社 | Casting mold device |
| CN108339948B (en) * | 2017-01-24 | 2020-12-29 | 新东工业株式会社 | Mold forming device |
Also Published As
| Publication number | Publication date |
|---|---|
| DE602007013830D1 (en) | 2011-05-26 |
| JP2007237234A (en) | 2007-09-20 |
| US20070209772A1 (en) | 2007-09-13 |
| EP1832358B1 (en) | 2011-04-13 |
| JP4706511B2 (en) | 2011-06-22 |
| CN101032735B (en) | 2011-07-20 |
| EP1832358A1 (en) | 2007-09-12 |
| EP1832358B8 (en) | 2011-09-21 |
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