CN205270771U - Sand mould molding device - Google Patents
Sand mould molding device Download PDFInfo
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- CN205270771U CN205270771U CN201521051700.XU CN201521051700U CN205270771U CN 205270771 U CN205270771 U CN 205270771U CN 201521051700 U CN201521051700 U CN 201521051700U CN 205270771 U CN205270771 U CN 205270771U
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Abstract
The utility model relates to a sand mould molding device. This sand mould molding device includes mould, fixed die plate, movable mould board and depression bar mechanism, and the movably and shape cooperation ground of movable mould board is inserted from the below and is established in the second inner chamber of fixed die plate for exert ascending pressure to the die joint of sand mould, depression bar mechanism can set up in the mould top with reciprocating, is used for exerting the controllable pressure of decurrent size to the non - die joint of sand mould. Above -mentioned sand mould molding device makes the sand mould lower part degree of packing and the homogeneity is good, make sand mould upper portion gas permeability good simultaneously.
Description
Technical field
This utility model relates to casting field, particularly relates to a kind of sand mold styling apparatus.
Background technology
Permanent mold casting adopts horizontal parting, running gate system can be located at the centre of foundry goods so that molten metal flow process in die cavity is short, uniformity of temperature profile, and foundry goods total quality is stable. But owing to running and feeding system runs through upper half mould, it is common to use molding sand forms running and feeding system, it is simple to foundry goods removing from mould. The sand mold sculpting method of existing running and feeding system divides: hand moulding, machine moulding.
Wherein, what hand moulding adopted is integrated template, and sand mold is hand ramming several times, and during high-volume moulding, workman's working strength is big, inefficiency, and therefore hand moulding is unsuitable for large quantities of adhesion product; Die joint sand mold relatively consolidation, foundry goods burning into sand defect is less; Dead head place sand mold compactability is moderate, and exhaust performance is good.
Wherein, what machine moulding adopted is also integrated template, and during moulding, the die joint of mould down, is fitted with integrated template, carried out adding sand and mechanical ramming at overstepping one's bounds profile end, and work efficiency is high, and workman's working strength is low, it may be achieved automatic batch production. But, the direct pressurized of typeable facing sand type, excessively consolidation, exhaust performance is poor. And the not direct pressurized of die joint sand mold, the degree of packing is relatively low, is easily generated burning into sand defect.
CN101961769A discloses a kind of depression bar and pressing plate and pressurizes for twice formative method, wherein, integrated template is adopted to form die cavity with mould, after adding sand in die cavity, first use depression bar that the molding sand of die cavity low areas is carried out consolidation, re-use pressing plate and typeable facing sand type is carried out consolidation. The method is limited due to the depression bar zone of action, it is impossible to ensure the enough consolidations of die joint sand mold; And typeable facing sand type is carried out compacting by depression bar, the inadequate consolidation of die joint sand mold can be caused or cause poor air permeability because of typeable facing sand type excessively consolidation, it is impossible to ensureing the enough consolidations of die joint sand mold simultaneously and typeable face sand mold compacting is moderate, good permeability.
Utility model content
(1) to solve the technical problem that
The technical problems to be solved in the utility model is to provide and a kind of makes the sand mold bottom degree of packing and uniformity is good, make the sand mold styling apparatus of sand mold top good permeability simultaneously.
(2) technical scheme
In order to solve above-mentioned technical problem, this utility model provides a kind of sand mold styling apparatus on the one hand, including: mould stacked up and down and solid plate, mould has the first inner chamber, and solid plate has the second inner chamber with the first inner space; Moving platen, moving platen is plugged in the second inner chamber of solid plate movably and shape-ordinatedly from below, the inner cavity surface of the first inner chamber of mould, the inner cavity surface of the second inner chamber of solid plate and the end face of moving platen enclose the cavity forming only open-top jointly, and cavity is used for holding sand mold; And pressure lever mechanism, can be arranged on above mould up or down; Wherein, moving platen is for applying to upward pressure to the die joint of sand mold, and pressure lever mechanism is for applying, to the overstepping one's bounds profile of sand mold, the pressure that downward size is controlled.
According to this utility model, pressure lever mechanism includes depression bar, and depression bar has the elastic pressure bar head for applying the controlled pressure of size.
According to this utility model, elastic pressure bar head includes: spaced top board and lower platen; It is arranged on the elastic component between top board and lower platen; And by elastic component pretension preload piece between.
According to this utility model, elastic component is spring, and preload piece includes screw bolt and nut; Wherein, top board and lower platen are linked together by screw bolt and nut, and spring housing is located on bolt.
According to this utility model, pressure lever mechanism includes depression bar and the adjustable hydraulic cylinder of maximum pressure value, and Driven by Hydraulic Cylinder depression bar moves up and down and controls depression bar and applies the pressure that size is controlled.
According to this utility model, moving platen is provided with leads sand bar; Depression bar is provided with for holding the hole leading sand bar.
According to this utility model, moving platen can be formed at the end face of the end face of the initial position and moving platen that form cavity and solid plate and move between the upper limit position on continuous print surface, inner cavity surface at the first inner chamber of upper limit position, the end face of moving platen and mould encloses formation die cavity jointly.
According to this utility model, also include: the keeper of the upper limit position of location moving platen; Keeper is connected to the lower end of moving platen, has the locating surface constituting the location to upper limit position with the bottom surface of solid plate when contacting.
According to this utility model, sand mold is the sand mold for cast grinding ball, the projection on die joint of the intersection of the ball-and-socket die cavity that the profile of the appearance profile of moving platen and the second inner chamber of solid plate is in die cavity and moving platen.
According to this utility model, sand mold is the sand mold for cast grinding ball.
(3) beneficial effect
Technique scheme of the present utility model has the advantage that
Sand mold styling apparatus of the present utility model, including mould stacked up and down and solid plate, mould has the first inner chamber, and solid plate has the second inner chamber with the first inner space; Moving platen, moving platen is plugged in the second inner chamber of solid plate movably and shape-ordinatedly from below, the inner cavity surface of the first inner chamber of mould, the inner cavity surface of the second inner chamber of solid plate and the end face of moving platen enclose the cavity forming only open-top jointly, and cavity is used for holding sand mold; And pressure lever mechanism, can be arranged on above mould up or down; Wherein, moving platen is for applying to upward pressure to the die joint of sand mold, and pressure lever mechanism is for applying, to the overstepping one's bounds profile of sand mold, the pressure that downward size is controlled. Thus, on the one hand, directly applying pressure to the bottom sand mold at die joint place, bottom sand mold compactability and uniformity are good; On the other hand, the top sand mold at overstepping one's bounds profile place is applied the pressure that size is controlled so that the degree of packing of top sand mold is controlled, it is ensured that the degree of packing of top sand mold is moderate, good permeability, is conducive to sand mold to parch, and the molding sand that not easily drops. Adopt the sand-mould quality that this sand mold styling apparatus manufactures high, use the casting qualified rate that this sand casting obtains high.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment one of sand mold styling apparatus of the present utility model;
Fig. 2 is the structural representation of the embodiment two of sand mold styling apparatus of the present utility model;
Fig. 3 is the structural representation of the embodiment three of sand mold styling apparatus of the present utility model;
Fig. 4 is the schematic top plan view of the solid plate in the sand mold styling apparatus shown in Fig. 1;
Fig. 5 is the sectional view intercepted of the section line A-A along Fig. 4;
Fig. 6 is the schematic top plan view of the moving platen in the sand mold styling apparatus shown in Fig. 1;
Fig. 7 is the sectional view of the moving platen in Fig. 6;
1: the first driving mechanism; 2: keeper; 3: moving platen; 4: solid plate; 5: mould; 6: sand mold; 7: frame; 8: the second driving mechanisms; 9: depression bar; 10: nut; 11: top board; 12: bolt; 13: spring; 14: lower platen; 15: lead sand bar; 16: the profile of the second inner chamber of solid plate; 17: the appearance profile of moving platen.
Detailed description of the invention
For making the purpose of this utility model embodiment, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in this utility model embodiment, technical scheme in this utility model embodiment is clearly and completely described, obviously, described embodiment is a part of embodiment of the present utility model, rather than whole embodiments. Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under the premise not making creative work, broadly fall into the scope of this utility model protection. Wherein, the term that relates in this utility model " on ", D score is all oriented with Fig. 1 to Fig. 3, Fig. 5, Fig. 7.
The embodiment one of sand mold styling apparatus
With reference to Fig. 1, the sand mold styling apparatus of the present embodiment, including mould 5, solid plate 4, moving platen 3 and pressure lever mechanism. Mould 5 and solid plate about 4 are stacked, and mould 5 is arranged on solid plate 4. Mould 5 has the first inner chamber, and solid plate 4 has the second inner chamber, the first inner chamber and the second inner space. Moving platen 3 is plugged in the second inner chamber of solid plate 4 movably and shape-ordinatedly from below, namely, moving platen 3 can slide in the second inner chamber, and in the process slided, the initial position of moving platen 3 is lower than the die joint certain altitude of solid plate 4 and mould 5, and the inner cavity surface of the sidewall of moving platen 3 and the second inner chamber contacts all the time, so that the end face of the inner cavity surface of the second inner chamber of the inner cavity surface of the first inner chamber of mould 5, solid plate 4 and moving platen 3 encloses the cavity forming only open-top jointly, this cavity is used for holding sand mold 6. The end face of sand mold 6 constitutes overstepping one's bounds profile, and the bottom surface of sand mold 6 constitutes die joint. Pressure lever mechanism can be arranged on above mould 5 up or down. Moving platen 3 is for applying to upward pressure to the die joint of sand mold 6, and pressure lever mechanism is for applying, to the overstepping one's bounds profile of sand mold 6, the pressure that downward size is controlled.
Thus, on the one hand, directly apply pressure, bottom sand mold 6 degree of packing and uniformity to the bottom sand mold 6 at die joint place good; On the other hand, the top sand mold 6 at overstepping one's bounds profile place is applied the pressure that size is controlled so that the degree of packing of top sand mold 6 is controlled, it is ensured that the degree of packing of top sand mold 6 is moderate, good permeability, be conducive to sand mold 6 to parch, and the molding sand that not easily drops. Adopt sand mold 6 mass that this sand mold styling apparatus manufactures high, use the casting qualified rate that the casting of this sand mold 6 obtains high.
In the present embodiment, sand mold 6 is the sand mold for casting metallic mould crashing ball. Solid plate 4 is arranged in frame 7, and mould 5 is arranged on solid plate 4.
Further, moving platen 3 can be formed at the end face of the end face of the initial position and moving platen 3 that form cavity and solid plate 4 and move between the upper limit position on continuous print surface. Namely, moving platen 3 is in the process of moving up, the upper limit position (namely stopping the position moving up) of moving platen 3 is the position making the end face of the end face of moving platen 3 and solid plate 4 form continuous print surface, namely guarantees sand mold 6 die joint and mould 5 die joint position at grade after moulding. Inner cavity surface at the first inner chamber of upper limit position, the end face of moving platen 3 and mould 5 encloses formation die cavity jointly. It is appreciated that, moving platen 3 is from initial position to the process that upper limit position moves, the volume of the cavity that the inner cavity surface of the first inner chamber of mould 5, the inner cavity surface of the second inner chamber of solid plate 4 and the end face of moving platen 3 enclose formation jointly constantly reduces, and is eventually reduced to above-mentioned die cavity.
In the present embodiment, keeper 2 plays the effect of the upper limit position of location moving platen 3, namely provides locator qualification by keeper 2 for moving platen 3. Keeper 2 is connected to the lower end of moving platen 3, and this keeper 2 has the locating surface constituting the location to upper limit position with the bottom surface of solid plate 4 when contacting, to limit the upper limit position of moving platen 3. In the process that moving platen 3 moves up, when locating surface is against the bottom surface of solid plate 4, moving platen 3 reaches its upper limit position, it is impossible to move up again. Specifically, in the present embodiment, shown in Fig. 1, keeper 2 is configured to step-like, and step surface constitutes locating surface, and keeper 2 constitutes rigidity location. Certainly, this utility model is not limited to this, and in other alternative-embodiments, keeper 2 can be one-body molded with moving platen 3, or keeper 2 can be the part-structure of moving platen 3 itself.
Further, driving keeper 2 and moving platen 3 to move upward by the first driving mechanism 1, wherein, the first driving mechanism 1 is arranged on below keeper 2 and is connected with keeper 2. Preferably, the first driving mechanism 1 is hydraulic cylinder, and the external part of its cylinder rod is connected to the bottom surface of keeper 2.
Further, with reference to Fig. 1, Fig. 4 to Fig. 7, in the present embodiment, the profile 16 of the appearance profile 17 of moving platen and the second inner chamber of solid plate is the intersection of the ball-and-socket die cavity of the first inner chamber and mould 5 and adds the projection on die joint of the intersection of the first inner chamber and mould 5 die joint, the die joint making bottom sand mold 6 is fitted completely with moving platen 3, whole bottom sand mold 6 uniform force, the degree of packing is uniform. In the present embodiment, the first inner chamber of mould 5 is tapered. It is emphasized that in the present embodiment, " the first inner chamber is tapered " can be that the first inner chamber is expanded gradually along the direction near moving platen; Also can be only the port of the close moving platen of the first inner chamber more than away from the port of moving platen but inner cavity surface portions incline therebetween and straightened portion, present the trend expanded along the direction away from moving platen.
Further, in the present embodiment, pressure lever mechanism includes depression bar 9 and the second driving mechanism 8 driving depression bar 9 to move up and down, and depression bar 9 has the elastic pressure bar head for applying the controlled pressure of size, and the second driving mechanism 8 is connected to the top of depression bar 9. Preferably, the second driving mechanism 8 is hydraulic cylinder, and cylinder rod is connected to the top of depression bar 9.
Specifically, elastic pressure bar head includes top board 11, lower platen 14, elastic component and preload piece. Wherein, top board 11 and lower platen 14 interval are arranged, and elastic component is supported between top board 11 and lower platen 14, preload piece by elastic component pretension between top board 11 and lower platen 14. When depression bar 9 is just pressed downward against sand mold 6,9 resistances born of depression bar are less than the pretightning force of elastic component, and elastic component does not compress. When sand mold 6 reaches certain degree of packing, when 9 resistances born of depression bar are more than the pretightning force of elastic component, elastic component compresses, and cushions 9 pressure to sand mold 6 of depression bar, it is ensured that the degree of packing of sand mold 6 is moderate. Meanwhile, before adopting pressure lever mechanism pressure sand mold 6, can pass through to adjust the pretightning force of elastic component, adjust typeable facing sand type 6 degree of packing. It is understood that the adjustable pressure lever mechanism that namely achieves of the pretightning force of elastic component can apply the pressure that size is controlled. Further, under some conditions, can pass through to design and calculate, choose suitable elastic component and pretightning force, it is determined that the concrete numerical value of pressure; Under some conditions, only can substantially choose elastic component and/or pressure is determined a relatively large or relatively small scope by the rough pretightning force that adjusts.
More specifically, in the present embodiment, elastic component is spring 13, and preload piece includes bolt 12 and nut 10. Wherein, top board 11 and lower platen 14 are linked together by bolt 12 and nut 10, and spring 13 is set on bolt 12, and one end acts on top board 11, and on lower platen 14, spring 13 is carried out pretension by the nut 10 on bolt 12 in other end effect.
Certainly, this utility model is not limited to this, in other embodiments, elastic component can be adopted to replace spring 13.
It is understood that in the present embodiment, moving platen 3, keeper 2 and solid plate 4 constitute separate template.
This sand mold styling apparatus has the advantage that
(1) above-mentioned moving platen 3 carries out bottom sand mold 6 is uniformly pressed, make the whole enough consolidations of die joint sand mold 6, effectively reduce the burning into sand defect of abrading-ball foundry goods, adopt above-mentioned pressure lever mechanism that top sand mold 6 carries out the controlled pressurization of size (in the present embodiment for elasticity pressure), make whole top sand mold 6 degree of packing moderate, good permeability, it is effectively increased the quality of abrading-ball foundry goods, and the problem that medium casting is second-rate is produced in horizontal parting permanent mold casting in enormous quantities to adopt this device can solve the problem that.
(2) moving platen 3 relative movement in solid plate 4, the initial position of adjustable moving platen 3, it may be achieved molding sand loading is adjustable, it is ensured that use the molding sand of different dry and wet degree to be also attained by the rational degree of packing.
Adopt the sand mold formative method of the sand mold styling apparatus shown in Fig. 1
With reference to Fig. 1, in the present embodiment, adopt the sand mold formative method of the sand mold styling apparatus shown in Fig. 1, for metallic mould crashing ball sand mold moulding, including compacting step: drive moving platen 3 die joint to sand mold 6 that moves up to apply to upward pressure, simultaneously drive pressure lever mechanism and move down the overstepping one's bounds profile to sand mold 6 and apply the pressure that downward size is controlled.
Thus, on the one hand, directly apply pressure, bottom sand mold 6 degree of packing and uniformity to the bottom sand mold 6 at die joint place good; On the other hand, the top sand mold 6 at overstepping one's bounds profile place is applied the pressure that size is controlled so that the degree of packing of top sand mold 6 is controlled, it is ensured that the degree of packing of top sand mold 6 is moderate, good permeability, be conducive to sand mold 6 to parch, and the molding sand that not easily drops. Adopt sand mold 6 mass that this sand mold formative method manufactures high, use the casting qualified rate that the casting of this sand mold 6 obtains high.
Specifically, in the present embodiment, sand mold formative method includes following step successively:
S1, step of overall modelling:
S1.1, solid plate 4 is fixed in frame 7;
S1.2, mould 5 is installed on solid plate 4;
S1.3, moving platen 3 is arranged on keeper 2, drives moving platen 3 to insert in the second cavity of solid plate 4 and adjust the initial position of moving platen 3 according to the volume of molding sand to be added;
S1.4, the adjustment pretightning force to spring 13, to adjust the pressure lever mechanism size to the pressure that overstepping one's bounds profile applies;
So far, the inner cavity surface of mould 5, the inner cavity surface of solid plate 4 and the end face of moving platen 3 cavity of the only open-top formed jointly is enclosed.
S2, add sand step:
Molding sand is added in above-mentioned cavity;
So far, the end face of molding sand constitutes overstepping one's bounds profile, and the bottom surface of molding sand constitutes the die joint being reversed with overstepping one's bounds profile.
S3, compacting step:
First driving mechanism 1 drive moving platen 3 move up the die joint to sand mold 6 apply upward pressure, second driving mechanism 8 drives depression bar 9 to move down the pressure that the applying of the overstepping one's bounds profile to sand mold 6 is downward simultaneously, first driving mechanism 1 is until stopping driving when the locating surface of keeper 2 is against the bottom surface of solid plate 4, in the process, when depression bar 9 is just pressed downward against sand mold 6,9 resistances born of depression bar are less than the pretightning force of elastic component, and elastic component does not compress. When sand mold 6 reaches certain degree of packing, when 9 resistances born of depression bar are more than the pretightning force of elastic component, elastic component compresses, and cushions 9 pressure to sand mold 6 of depression bar, it is ensured that the degree of packing of sand mold 6 is moderate;
So far, squeeze mo(u)lding action completes, and the inner cavity surface of the end face of moving platen 3 and the first inner chamber of mould 5 surrounds die cavity jointly.
Afterwards, pressure lever mechanism returns to initial position, and moving platen 3 drops to initial position, solid plate 4 and mould 5 is separated, and namely completes sand mold moulding (being preferably, metal type dies 5 sand mold moulding).
The embodiment two of sand mold styling apparatus
With reference to Fig. 2, in the present embodiment, with the structure that embodiment one is different in that pressure lever mechanism.
Specifically, in the present embodiment, pressure lever mechanism includes depression bar 9 and hydraulic cylinder, and the maximum pressure value of hydraulic cylinder is adjustable, and Driven by Hydraulic Cylinder depression bar 9 moves up and down and controls depression bar 9 and applies the pressure that size is controlled.
When depression bar 9 is just pressed downward against sand mold 6, the resistance that depression bar 9 bears is less than the maximum pressure value of hydraulic cylinder, and the pressure of hydraulic cylinder increases with resistance suffered by depression bar 9 and increases; When sand mold 6 reaches certain degree of packing, the resistance that depression bar 9 bears increases to hydraulic cylinder maximum pressure value, and the overflow valve of hydraulic cylinder oil circuit starts overflow so that depression bar 9 is pressed under stopping, it is ensured that the degree of packing of sand mold 6 is moderate. Meanwhile, before adopting pressure lever mechanism pressure sand mold 6, can pass through to adjust the maximum pressure value of hydraulic cylinder, adjust typeable facing sand type 6 degree of packing. It is understood that the adjustable pressure lever mechanism that namely achieves of the maximum pressure value of hydraulic cylinder can apply the pressure that size is controlled. Further, the maximum pressure value of hydraulic cylinder it is determined by, it is possible to determine the concrete numerical value of pressure lever mechanism pressure applied.
Adopt the sand mold formative method of the sand mold styling apparatus shown in Fig. 2
With reference to Fig. 2, in the present embodiment, adopt the sand mold formative method of the sand mold styling apparatus shown in Fig. 2, for metallic mould crashing ball sand mold moulding, including following step successively:
S1, step of overall modelling:
S1.1, solid plate 4 is fixed in frame 7;
S1.2, mould 5 is installed on solid plate 4;
S1.3, moving platen 3 is arranged on keeper 2, drives moving platen 3 to insert in the second cavity of solid plate 4 and adjust the initial position of moving platen 3 according to the volume of molding sand to be added;
S1.4, adjust hydraulic cylinder maximum pressure value, to adjust the pressure lever mechanism size to the pressure that overstepping one's bounds profile applies;
So far, the inner cavity surface of mould 5, the inner cavity surface of solid plate 4 and the end face of moving platen 3 cavity of the only open-top formed jointly is enclosed.
S2, add sand step:
Molding sand is added in above-mentioned cavity;
So far, the end face of molding sand constitutes overstepping one's bounds profile, and the bottom surface of molding sand constitutes the die joint being reversed with overstepping one's bounds profile.
S3, compacting step:
First driving mechanism 1 drive moving platen 3 move up the die joint to sand mold 6 apply upward pressure, second driving mechanism 8 drives depression bar 9 to move down the pressure that the applying of the overstepping one's bounds profile to sand mold 6 is downward simultaneously, first driving mechanism 1 is until stopping driving when the locating surface of keeper 2 is against the bottom surface of solid plate 4, in the process, when depression bar 9 is just pressed downward against sand mold 6, the resistance that depression bar 9 bears is less than the maximum pressure value of hydraulic cylinder, and the pressure of hydraulic cylinder increases with resistance suffered by depression bar 9 and increases; When sand mold 6 reaches certain degree of packing, the resistance that depression bar 9 bears increases to hydraulic cylinder maximum pressure value, and the overflow valve of hydraulic cylinder oil circuit starts overflow so that depression bar 9 is pressed under stopping, it is ensured that the degree of packing of sand mold 6 is moderate;
So far, squeeze mo(u)lding action completes, and the inner cavity surface of the end face of moving platen 3 and the first inner chamber of mould 5 surrounds die cavity jointly.
The embodiment three of sand mold styling apparatus
With reference to Fig. 3, in the present embodiment, being different in that with embodiment two, moving platen 3 is additionally provided with and leads sand bar 15, being provided with for holding the hole leading sand bar 15 in depression bar 9, match with leading sand bar 15 in this hole, it is achieved the compacting of sprue channel open sand mold 6.
It is understood that in the present embodiment, moving platen 3, keeper 2, lead sand bar 15 and solid plate 4 constitutes separate template
Adopt above-mentioned moving platen 3 to carry out bottom sand mold 6 is uniformly pressed, make the whole enough consolidations of die joint sand mold 6, effectively reduce the burning into sand defect of abrading-ball foundry goods; Adopt above-mentioned pressure lever mechanism that top sand mold 6 carries out the pressurization that size is controlled, and coordinated compacting with depression bar 9 with holes from leading sand bar 15, form sand mold 6 running channel, make whole top sand mold 6 degree of packing moderate, good permeability, it is effectively increased the quality of abrading-ball foundry goods.
Adopt the sand mold formative method of the sand mold styling apparatus shown in Fig. 3
With reference to Fig. 3, in the present embodiment, adopt the sand mold formative method of the sand mold styling apparatus shown in Fig. 3, for metallic mould crashing ball sand mold moulding, including following step successively:
S1, step of overall modelling:
S1.1, solid plate 4 is fixed in frame 7;
S1.2, mould 5 is installed on solid plate 4;
S1.3, moving platen 3 is arranged on keeper 2, drives moving platen 3 to insert in the second cavity of solid plate 4 and adjust the initial position of moving platen 3 according to the volume of molding sand to be added;
S1.4, sand bar 15 will be led it will be arranged on moving platen 3;
S1.5, adjust hydraulic cylinder maximum pressure value, to adjust the pressure lever mechanism size to the pressure that overstepping one's bounds profile applies;
So far, the inner cavity surface of mould 5, the inner cavity surface of solid plate 4 and the end face of moving platen 3 cavity of the only open-top formed jointly is enclosed.
S2, add sand step:
Molding sand is added in above-mentioned cavity;
So far, the end face of molding sand constitutes overstepping one's bounds profile, and the bottom surface of molding sand constitutes the die joint being reversed with overstepping one's bounds profile.
S3, compacting step:
First driving mechanism 1 drive moving platen 3 move up the die joint to sand mold 6 apply upward pressure, second driving mechanism 8 drives depression bar 9 to move down the pressure that the applying of the overstepping one's bounds profile to sand mold 6 is downward simultaneously, first driving mechanism 1 is until stopping driving when the locating surface of keeper 2 is against the bottom surface of solid plate 4, in the process, lead sand bar 15 and be gradually inserted the aerial of depression bar 9, when depression bar 9 is just pressed downward against sand mold 6, the resistance that depression bar 9 bears is less than the maximum pressure value of hydraulic cylinder, and the pressure of hydraulic cylinder increases with resistance suffered by depression bar 9 and increases; When sand mold 6 reaches certain degree of packing, the resistance that depression bar 9 bears increases to hydraulic cylinder maximum pressure value, and the overflow valve of hydraulic cylinder oil circuit starts overflow so that depression bar 9 is pressed under stopping, it is ensured that the degree of packing of sand mold 6 is moderate;
So far, squeeze mo(u)lding action completes, and the inner cavity surface of the end face of moving platen 3 and the first inner chamber of mould 5 surrounds die cavity jointly.
Adopt the sand mold formative method of the sand mold styling apparatus shown in above-mentioned Fig. 1 to Fig. 3
In the present embodiment, adopt the sand mold styling apparatus shown in above-mentioned Fig. 1 to Fig. 3, all can realize following sand mold formative method, for metallic mould crashing ball sand mold moulding, wherein, including compacting step:
The overstepping one's bounds profile of sand mold 6 is applied the pressure that size is controlled, the die joint being reversed with overstepping one's bounds profile of sand mold 6 is applied pressure simultaneously.
Thus, on the one hand, directly apply pressure, bottom sand mold 6 degree of packing and uniformity to the bottom sand mold 6 at die joint place good; On the other hand, the top sand mold 6 at overstepping one's bounds profile place is applied the pressure that size is controlled so that the degree of packing of top sand mold 6 is controlled, it is ensured that the degree of packing of top sand mold 6 is moderate, good permeability, be conducive to sand mold 6 to parch, and the molding sand that not easily drops. Adopt sand mold 6 mass that this sand mold formative method manufactures high, use the casting qualified rate that the casting of this sand mold 6 obtains high.
Last it is noted that above example is only in order to illustrate the technical solution of the utility model, it is not intended to limit; Although this utility model being described in detail with reference to previous embodiment, it will be understood by those within the art that: the technical scheme described in foregoing embodiments still can be modified by it, or wherein portion of techniques feature is carried out equivalent replacement; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of each embodiment technical scheme of this utility model.
Claims (10)
1. a sand mold styling apparatus, it is characterised in that including:
Mould (5) stacked up and down and solid plate (4), described mould (5) has the first inner chamber, and described solid plate (4) has and the second inner chamber of described first inner space;
Moving platen (3), described moving platen (3) is plugged in described second inner chamber of described solid plate (4) movably and shape-ordinatedly from below, the inner cavity surface of described first inner chamber of described mould (5), the inner cavity surface of described second inner chamber of described solid plate (4) and the end face of described moving platen (3) enclose the cavity forming only open-top jointly, and described cavity is used for holding sand mold (6); And
Pressure lever mechanism, can be arranged on described mould (5) top up or down;
Wherein, described moving platen (3) is for applying to upward pressure to the die joint of described sand mold (6), and described pressure lever mechanism is for applying, to the overstepping one's bounds profile of described sand mold (6), the pressure that downward size is controlled.
2. sand mold styling apparatus according to claim 1, it is characterised in that
Described pressure lever mechanism includes depression bar (9), and described depression bar (9) has the elastic pressure bar head for applying the controlled pressure of described size.
3. sand mold styling apparatus according to claim 2, it is characterised in that
Described elastic pressure bar head includes:
Spaced top board (11) and lower platen (14);
It is arranged on the elastic component between described top board (11) and described lower platen (14); And
By described elastic component pretension preload piece between.
4. sand mold styling apparatus according to claim 3, it is characterised in that
Described elastic component is spring (13), and described preload piece includes bolt (12) and nut (10);
Wherein, described top board (11) and lower platen (14) are linked together by described bolt (12) and described nut (10), and described spring (13) is set on described bolt (12).
5. sand mold styling apparatus according to claim 1, it is characterised in that
Described pressure lever mechanism includes depression bar (9) and the adjustable hydraulic cylinder of maximum pressure value, and depression bar (9) described in described Driven by Hydraulic Cylinder moves up and down and controls described depression bar (9) and applies the pressure that described size is controlled.
6. sand mold styling apparatus according to claim 5, it is characterised in that
Described moving platen (3) is provided with leads sand bar (15);
Described depression bar (9) is provided with the hole for leading sand bar (15) described in holding.
7. sand mold styling apparatus according to claim 1, it is characterised in that
Described moving platen (3) can be formed at the end face of the end face of the initial position and described moving platen (3) that form described cavity and described solid plate (4) and move between the upper limit position on continuous print surface, inner cavity surface at the first inner chamber of described upper limit position, the end face of described moving platen (3) and described mould (5) encloses formation die cavity jointly.
8. sand mold styling apparatus according to claim 7, it is characterised in that also include:
Position the keeper (2) of the upper limit position of described moving platen (3);
Described keeper (2) is connected to the lower end of described moving platen (3), has the locating surface constituting the location to described upper limit position with the bottom surface of described solid plate (4) when contacting.
9. sand mold styling apparatus according to claim 7, it is characterised in that
Described sand mold (6) is the sand mold for cast grinding ball, and the profile (16) of the appearance profile (17) of described moving platen and the second inner chamber of solid plate is the intersection of the ball-and-socket die cavity of described first inner chamber and mould (5) and adds the projection on die joint of the intersection of described first inner chamber and mold parting surface.
10. the sand mold styling apparatus according to any one of claim 1-8, it is characterised in that
Described sand mold (6) is the sand mold for cast grinding ball.
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| CN201521051700.XU CN205270771U (en) | 2015-12-15 | 2015-12-15 | Sand mould molding device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201521051700.XU CN205270771U (en) | 2015-12-15 | 2015-12-15 | Sand mould molding device |
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| CN205270771U true CN205270771U (en) | 2016-06-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105436425A (en) * | 2015-12-15 | 2016-03-30 | 湖南红宇耐磨新材料股份有限公司 | Sand mold molding device and sand mold molding methods |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105436425A (en) * | 2015-12-15 | 2016-03-30 | 湖南红宇耐磨新材料股份有限公司 | Sand mold molding device and sand mold molding methods |
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Granted publication date: 20160601 Termination date: 20201215 |