CN208879622U - A kind of sand core positioning structure of improved vehicle box mold - Google Patents
A kind of sand core positioning structure of improved vehicle box mold Download PDFInfo
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- CN208879622U CN208879622U CN201821695174.4U CN201821695174U CN208879622U CN 208879622 U CN208879622 U CN 208879622U CN 201821695174 U CN201821695174 U CN 201821695174U CN 208879622 U CN208879622 U CN 208879622U
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Abstract
The utility model discloses a kind of sand core positioning structures of improved vehicle box mold, are related to aluminium alloy casting technology field, are difficult to ensure that in cavity filling process, each sand mold part does not generate shifting phenomena greatly to solve existing sand core combination installation positioning difficulty.It includes main sand core, water channel sand cores, draw sand core, cross sand core and positioning base and lug sand core, the material of positioning base is H13 mould steel, and positioning base is equipped with tap hole, main sand core is in hollow setting, it is intracavitary that molten aluminum through the fit clearance of cross sand core and tap hole enters type, draw sand core with main sand core location fit, be fixed on the lower end of water channel sand cores and positioning base, and the upper end of water channel sand cores and main sand core location fit.By implementing the technical program, it can effectively ensure that the mutual supporting & stablizing of each sand mold part, positioning reliably without generating displacement；And to fill type complete for cabinet, there is no bleb, owes the defects of casting or profile are unintelligible.
Description
Technical field
The utility model relates to aluminium alloy casting technology fields, more particularly to a kind of improved vehicle box mold
Sand core positioning structure.
Background technique
Emission control with countries in the world for vehicle exhaust is increasingly stringenter, existing commercial vehicle vent gas treatment cabinet casting
Upgrading is inevitable outcome.Since market vehicle engine engine efficiency and dynamic property are more demanding, company casts vehicle tail gas in research and development
Handle cabinet when, emphatically improve metal liquid in the intracavitary mobility of type, and constantly to fill profile material, metal die and sand core into
Row improves, and customizes automobile-used casting special equipment.
Through researching and developing, vehicle tail gas handles cabinet and uses half sand mold low-pressure casting process, and sand core is in Foundry Production for making
The material of moulding core is made of casting model powder, moulding sand binder etc.；Core sand is divided into clay core sand, water glass by binder difference used
Glass core sand, wick sand, conjunction rouge core sand, resin core sand etc..Existing vehicle tail gas processing cabinet uses the lower resin sand of gas forming amount, but
Structure is complicated for box mold, and three type chambers are relatively independent, cannot mutually seep water, and the disposable casting and forming difficulty of product is big.By
In vehicle tail gas processing cabinet, structure is complicated, is difficult to reach product design precision using integral type core design；If sand core is set
It is calculated as sectional type, is cracked after sand core can be facilitated to form.
In view of the above research, those skilled in the art encounter following technological difficulties in sectional type core design: on the one hand
Sand core need to be mutually located support assembled with main sand core by the different sand mold part such as draw sand core, water channel sand cores and form, and small water
Road sand core, water channel sand cores and main sand core are placed vertically and are set in vehicle tail gas processing box mold, after molding, water channel sand cores and
Draw sand core is easy displacement and generates the phenomenon that different shaped chamber mutually seeps water；On the other hand, box casting weight is about sand core
The 1/3 of weight, sand core chance aluminum water covering gas production is big, and each sand core is mutually indepedent, if the gas of generation cannot smooth discharge in time
And immerse in casting, will lead to that cast structure is loose and different parts there are different degrees of shrinkage cavities, form bleb, owe
The defects of casting or profile are unintelligible.
Utility model content
It is difficult to ensure that in cavity filling process, each sand mold part does not produce greatly to solve existing sand core combination installation positioning difficulty
The problem of raw shifting phenomena, the purpose of this utility model is to provide a kind of positioning of the sand core of improved vehicle box mold to tie
The mutual supporting & stablizing of each sand mold part, positioning is effectively ensured reliably without generating displacement in structure；And to fill type complete for cabinet, there is no castings
Part stomata owes the defects of casting or profile are unintelligible.
The utility model specifically uses following technical scheme to achieve the goals above:
A kind of sand core positioning structure of improved vehicle box mold, including main sand core, water channel sand cores, draw sand core,
Cross sand core and positioning base and the lug sand core being fixed on positioning base, the material of the positioning base are H13 mold
Steel, and positioning base is equipped with tap hole, the main sand core is in hollow setting, and the main sand core is fixed on point by cross sand core
On discharge orifice, molten aluminum enters that type is intracavitary through the fit clearance of cross sand core and tap hole, the lower end of the draw sand core and main sand
The lower end of core location fit, the upper end of draw sand core and main sand core location fit, the water channel sand cores is inserted on positioning base
It is fixed, and the upper end of water channel sand cores is equipped with the positioning core print cooperated with main sand core.
The working principle of the utility model base case are as follows: the above-mentioned sand core positioning mechanism of application casts automobile-used vent gas treatment case
Body, it is intracavitary that fit clearance of the molten aluminum through cross sand core and tap hole is injected into type from lower to upper, and positioning base uses H13 mould steel
It is made, structural strength is high, can stablize and support other sand mold parts, and positioning base is optimized for metal mold H13 mould steel, relatively traditional
Sand mold pedestal is not susceptible to aluminum water long-time high temperature and washes away lead to the caducous situation of pedestal sand.
Enter positioning base using the edge down of water channel sand cores lower end and apply core binder again, to support water channel sand cores lower end with
Positioning base is positioned, and the positioning core print of water channel sand cores upper end is utilized to be inserted into main sand core, to support in water channel sand cores
End is positioned with main sand core；And become owner of sand core using the bending part of draw sand core lower end edge down and apply core binder again, it uses
To support draw sand core lower end to be positioned with main sand core, and draw sand core is utilized directly to cooperate with main sand core, to prop up
Support draw sand core upper end is positioned with main sand core, between accurately controlling between draw sand core, water channel sand cores and main sand core
Away from, guarantee that the mutual supporting & stablizing of each sand mold part, positioning are reliable, draw sand core, water channel sand cores and main sand core avoided to misplace,
There is the phenomenon that mutually infiltration between the water channel that water channel and main sand core, the draw sand core for causing water channel sand cores to be formed are formed, protects
The design accuracy of mould casting is demonstrate,proved, mould casting certified product rate is improved.
And the sand core part phase location fit of sectional type, effectively draw sand core, water channel sand cores and main sand core can be connected to, it will
The gas that draw sand core and water channel sand cores generate introduces in main sand core, and by the way that mold is discharged by the main sand core of hollow setting
Type chamber, good exhaust effect, it is complete that cabinet fills type, there is no bleb, owes the defects of casting or profile are unintelligible.
Preferred embodiment, the cross sand core are overlapped on tap hole upper end, are equipped with round boss in the upper end of cross sand core, main
The bottom of sand core is equipped with the groove cooperated with round boss, and cross sand core is inserted into the groove of main sand core by round boss and it
It is positioned.Fit clearance of the molten aluminum through cross sand core and tap hole can be effectively controlled in the careful design of cross sand core, guarantees aluminium
Liquid is intracavitary even into the type in each path.
Preferred embodiment, the upper end of the draw sand core is equipped with cone blind hole, and draw sand core with cone blind hole by cooperating
Bolt be located by connecting with mold shell.It is inserted into bolt after molding, can effectively be determined draw sand core and mould housing
Position.
Preferred embodiment, the draw sand core are equipped with core print boss, the core print boss in the side for being right against cone blind hole
Along its axially vertical main sand core of insertion, to be connected to draw sand core and main sand core.Cone blind hole can be effectively prevent to deviate to be expected
Position and cause bolt that can not normally import in cone blind hole, and then avoid draw sand core there is a phenomenon where be broken；At the same time,
The upper end of draw sand core is connect by core print boss with main sand core, connection draw sand core and main sand core, by draw sand core
The gas of generation introduces in main sand core, good exhaust effect.
Preferred embodiment, the upper end of the draw sand core extend out into arc structure along its length, and arc structure
Center of circle line is passed through along cone blind hole center, and with the axial line of core print boss on same straight line.Draw sand can be effectively improved
The reliability that core upper end is connect with main sand core and mould housing, avoid core print boss be inserted into main sand core offset with main sand core or
It is inserted into cone blind hole using bolt when offseting with draw sand core, the phenomenon that draw sand core deformation occurs or loses increases small
Water channel sand cores locating effect guarantees its structural rigidity intensity simultaneously.
Preferred embodiment, the circular in cross-section shape of the core print boss, and the diameter of core print boss cross section are along its insertion
Gradually successively decrease main sand core side.To operate convenient for core under draw sand core head boss, it is high to be not only convenient for lower core positioning accuracy, and
There is no the structures of corner angle seamed edge, are not easy drop of colliding with, and practicability is good.
Preferred embodiment, the positioning core print is in boss structure, and water channel sand cores are inserted into main sand core by positioning core print and are carried out
Positioning, and at least two exhaust counterbores are equipped with the mating surface of the main sand core.
Preferred embodiment, the exhaust counterbore is two, and two exhaust counterbores are in along the bottom center of boss structure
Mirror symmetry setting.Gas in water channel sand cores can be introduced in main sand core by the setting of exhaust counterbore along gas sprawling direction,
Optimize water channel sand cores exhaust effect, structure design is simple ingenious.
Preferred embodiment, in the exhaust that the upper end of the water channel sand cores extends at least provided with two along mold cavity upper vertical
Core print, each exhaust core print are corresponding with the reserved position of tapping fabrication hole of the intracavitary box flange disk to be formed of type.Row
Gas is drawn mold cavity rapidly by type intracavity gas by gaseous core head, even if water channel sand cores are still generating gas, will not be led
It causes to there are problems that largely choking with resentment and influencing casting Forming Quality in mold cavity, may make the ring flange knot of molding top of the box
Structure is compact, and later period tapping thread silk tooth is full, effectively improves the certified product rate of mould casting.
Preferred embodiment, two exhaust core prints are cylindric, and the sizes of two exhaust core prints and box flange disk
The size of threaded hole is adapted.To directly be formed and box flange disk in the position that box flange disk reserves tapping fabrication hole
The compatible through-hole of screw thread pore size can effectively reduce box flange disk later period drilling operating, be convenient for tapping, improve cabinet processing
Cabinet processing efficiency can be effectively improved while quality.
As described above, the utility model having the beneficial effect that compared with the prior art:
1. each sand mold part of sectional type is mounted on metal mold positioning base by the utility model, positioning base structural strength
Height can be stablized and support other sand mold parts, and positioning base is optimized for metal pedestal, and it is long that relatively traditional sand mold pedestal is not susceptible to aluminum water
Time high temperature, which washes away, leads to the caducous situation of pedestal sand.
2. the utility model draw sand core upper end is positioned by core print boss and the cooperation of main sand core, on the one hand to support
Draw sand core upper end is positioned with main sand core, and the accurate spacing controlled between draw sand core core body and main sand core guarantees
The design accuracy of mould casting improves mould casting certified product rate；Another aspect core print boss is used in conjunction with logical draw sand core and master
Gas that draw sand core generates is introduced in main sand core and is discharged by sand core, good exhaust effect, can available gas nest in mold
Type is intracavitary and the problem of influencing casting Forming Quality.
3. the positioning core print of the utility model water channel sand cores upper end design, can effectively support water channel sand cores upper end and main sand core
Positioning, the accurate spacing controlled between water channel sand cores core body and main sand core, avoids water channel sand cores that dislocation occurs and leads to water channel sand
There is the phenomenon that mutually infiltration between the water channel of water channel and main sand core, the formation of draw sand core that core is formed, guarantees mould casting
Design accuracy, improve mould casting certified product rate；And the design for positioning core print exhaust counterbore can optimize water channel sand cores exhaust effect.
4. the utility model water channel sand cores upper end is equipped with exhaust core print, exhaust core print creeps up mixed gas along gas
Direction gas is drawn into mold cavity rapidly, even if water channel sand cores still generate gas, will not cause in mold cavity
There are problems that largely choking with resentment and influencing casting Forming Quality, it is complete to may make that cabinet fills type in conjunction with above-mentioned exhaust structure, does not deposit
In bleb, owe the defects of casting or profile are unintelligible.
5. the cooperation of the utility model cross sand core and positioning base and main sand core positions, molten aluminum can be effectively controlled through cross
Each fit clearance of sand core and tap hole is simultaneously and intracavitary even into the type in each path, avoids two tap holes of tradition
Design, molten aluminum enter in mold cavity along different paths and are easy in the intracavitary problem for forming turbulent flow of type, optimization system exhaust effect
Fruit.
Detailed description of the invention
Fig. 1 is a kind of showing for the sand core positioning structure of improved vehicle box mold shown according to an exemplary embodiment
It is intended to；
Fig. 2 is a kind of the quick-fried of the sand core positioning structure of improved vehicle box mold shown according to an exemplary embodiment
Fried schematic diagram；
Fig. 3 is fixed in a kind of sand core positioning structure of improved vehicle box mold shown according to an exemplary embodiment
The top view of position pedestal；
Fig. 4 is ten in a kind of sand core positioning structure of improved vehicle box mold shown according to an exemplary embodiment
The schematic diagram of word sand core；
Fig. 5 is small in a kind of sand core positioning structure of improved vehicle box mold shown according to an exemplary embodiment
The schematic diagram of water channel sand cores；
Fig. 6 is water in a kind of sand core positioning structure of improved vehicle box mold shown according to an exemplary embodiment
The schematic diagram of road sand core.
Specific embodiment
It is further described below by specific embodiment:
Appended drawing reference in Figure of description includes: the main sand core of 1-, 2- water channel sand cores, 3- draw sand core, 4- cross sand
Core, 5- lug sand core, 6- positioning base, 7- tap hole, 8- positioning core print, 9- round boss, 10- exhaust protrusion, 11- cone are blind
Hole, 12- core print boss, 13- exhaust counterbore, 14- are vented core print.
Embodiment 1
It please refers to shown in Fig. 1 and Fig. 2, the present embodiment provides a kind of sand core positioning structure of improved vehicle box mold,
Including main sand core 1, water channel sand cores 2, draw sand core 3, cross sand core 4 and positioning base 6 and it is fixed on positioning base 6
Lug sand core 5, specifically, incorporated by reference to shown in Fig. 3 and Fig. 4, positioning base 6 is equipped with tap hole 7, and main sand core 1 passes through cross sand
Core 4 is fixed on tap hole 7, molten aluminum through four fit clearances of cross sand core 4 and tap hole 7 enters type intracavitary, cross sand core 4
It is overlapped on 7 upper end of tap hole, is equipped with round boss 9 in the upper end of cross sand core 4, the bottom of main sand core 1 is equipped with and round boss 9
The groove of cooperation, cross sand core 4 are inserted into the groove of main sand core 1 by round boss 9 and are positioned with it；Cross sand core 4
Fit clearance of the molten aluminum through cross sand core 4 Yu tap hole 7 can be effectively controlled in careful design, guarantees molten aluminum even into each path
Type it is intracavitary.
The lower end of draw sand core 3 and main 1 location fit of sand core, upper end and the mold shell positioning of draw sand core 3 are matched
It closes, is fixed on the lower end insertion positioning base 6 of water channel sand cores 2, and the upper end of water channel sand cores 2 is equipped with and cooperates with main sand core 1
Positioning core print 8.Specifically, incorporated by reference to shown in Fig. 1 and Fig. 5, draw sand core 3 is including draw sand core core body and along small water
The bending end of road sand core core body lower end setting, draw sand core core as linear block structure, draw sand core core body with it is curved
It rolls over end and is equipped with 90 ° of arc-shaped corner structures, to be mounted on main 1 lower end of sand core, to support 3 lower end of draw sand core and main sand
Core 1 is positioned；And guarantee to be not easy to collide in position fixing process to rub to wipe the phenomenon that generating drop.
It is equipped with cone blind hole 11 far from the upper end of the bending end in draw sand core core body, to insert after molding by bolt
Enter to bore in blind hole 11,3 upper end of draw sand core easy to support is positioned with metal die；And it is equipped in the bottom of cone blind hole 11
Metal mold limited block avoids the phenomenon that generating friction drop with cone 11 bottom of blind hole in bolt insertion cone blind hole 11, is generated
Positioning, which loosens, influences product quality.
Draw sand core core is equipped with core print boss 12 in the side for being right against cone blind hole 11, and core print boss 12 is along its axial direction
It is inserted perpendicularly into main sand core 1, to support 3 upper end of draw sand core to be positioned with main sand core 1, and to be connected to draw sand
Core core body and main 1 air flue of sand core.Specifically, to be operated convenient for the lower core of 3 core print boss 12 of draw sand core, by core print boss 12
Circular in cross-section shape, and the diameter of 12 cross section of core print boss is inserted into main 1 side of sand core along it and gradually successively decreases, and is not only convenient for down
Core positioning accuracy is high, and the structure of corner angle seamed edge is not present, and is not easy drop of colliding with, practicability is good.
The length direction for the upper end edge draw sand core core body that draw sand core core body is connect with core print boss 12 is extended out into
Arc structure, and the center of circle line of arc structure is passed through along cone 11 center of blind hole, and with the axial line of core print boss 12 in same
On straight line, the stress intensity of one end that draw sand core core body is connect with core print boss 12 can be effectively improved, core print boss is avoided
It offsets or is inserted into cone blind hole 11 using bolt when offseting with draw sand core core body with main sand core 1 in the 12 main sand cores of insertion 1
The phenomenon that sand core deformation occur or losing increases by 3 locating effect of draw sand core and guarantees its structural rigidity intensity simultaneously.
The positioning core print 8 that water channel sand cores 2 are held including 2 core body of water channel sand cores and with 2 core of water channel sand cores, water channel sand
The lower end of 2 core body of core is positioned by being inserted into positioning base 6, is held with 2 core of water channel sand cores and is inserted into main sand by positioning core print 8
It is positioned in core 1, the positioning core print 8 that 2 core body of water channel sand cores is inserted into main 1 one end of sand core is perpendicular curved along 2 core body of water channel sand cores
Folding, and the positioning core print 8 vertically bent is the boss structure that bottom surface is rectangle.2 core body of water channel sand cores and the cooperation of main sand core 1 connect
The upper end connect is set there are two core print 14 is vented, and two exhaust core prints 14 and the intracavitary box flange disk to be formed of type reserve tapping work
The position in skill hole is corresponding, and two exhaust core prints 14 may pass upwardly through type chamber and be connected with the exhaust passage of metal die.
Two exhaust core prints 14 are cylindric, and the ruler of the threaded hole of the sizes and box flange disk of two exhaust core prints 14
It is very little to be adapted.During box flange disc molding, the exhaust core print 14 of design directly can reserve tapping technique in box flange disk
The position in hole forms through-hole compatible with the screw thread pore size of box flange disk, reduces box flange disk later period drillman
Cabinet processing efficiency can be improved while improving cabinet processing quality in sequence.
Specific embodiment of the present utility model are as follows: above-mentioned sand core positioning structure is applied to vehicle tail gas and handles box body formwork
Tool, after the positioning base 6 of 1 lower end of main sand core 1 and main sand core is had good positioning, it is fixed to be entered using 2 core body lower end of water channel sand cores edge down
Position pedestal 6 applies core binder again, to support 2 lower end of water channel sand cores and positioning base 6 to be positioned, positions rear channel sand core
2 water channel sand cores, 2 core body lower end is 5m apart from main sand core 1；And the positioning core print 8 of the boss structure of 2 upper end of water channel sand cores is utilized to insert
It becomes owner of in sand core 1, to support 2 upper end of water channel sand cores to be positioned with main sand core 1, positions 2 water channel sand cores of rear channel sand core, 2 core
Being held with it apart from main sand core 1 is 5m, accurately controls the spacing between 2 water channel sand cores of water channel sand cores, 2 core body and main sand core 1.
In turn, sand core 1 is become owner of using 3 bending end of draw sand core edge down and apply core binder again, to support draw
3 lower end of sand core is positioned with main sand core 1, and 3 draw sand core core body lower end of draw sand core is apart from main sand core 1 after positioning
5m；It is inserted into main sand core 1 using the core print boss 12 of 3 upper end of draw sand core, to support 3 upper end of draw sand core and main sand
Core 1 is positioned, and 12 height of core print boss is 19mm, and the distance being inserted into main sand core 1 is 14mm, draw sand core 3 after positioning
Being held with draw sand core core apart from main sand core 1 is 5m, and two position locations distance is 340mm or so, the block-like small water of linear
Road sand core core body along perpendicular main sand core 1 apart from identical, accurately control 3 draw sand core core body of draw sand core and master
Spacing between sand core 1 guarantees the design accuracy of mould casting；Guarantee that the mutual supporting & stablizing of each sand mold part, positioning are reliable, avoids
Draw sand core 3, water channel sand cores 2 and main sand core 1 misplace, the water channel and main sand core 1, little Shui for causing water channel sand cores 2 to be formed
There is the phenomenon that mutually infiltration between the water channel that road sand core 3 is formed, guarantee the design accuracy of mould casting, is improving mould casting just
Product rate.
After metal die molds, molten aluminum is injected into type chamber through the fit clearance of cross sand core 4 and tap hole 7 from lower to upper
Interior, positioning base 6 is made of metal, preferably H13 mould steel, and structural strength is high, can be stablized and be supported other sand mold parts, and is fixed
Position pedestal 6 is optimized for H13 mould steel, and relatively traditional sand mold pedestal is not susceptible to aluminum water long-time high temperature and washes away cause pedestal sand easy
The case where falling off；And the sand core part phase location fit of sectional type is used, it can be effectively by draw sand core 3, water channel sand cores 2 and main sand
Core 1 is connected to, and the gas that draw sand core 3 and water channel sand cores 2 are generated introduces in main sand core 1, and by passing through hollow setting
Main sand core 1 is discharged mold cavity, good exhaust effect, and it is complete that cabinet fills type, there is no bleb, owes casting or profile is unintelligible etc.
Defect.
Embodiment 2
Incorporated by reference to shown in Fig. 1 and 5, the present embodiment is further improved on the basis of embodiment 1, specifically, small
Be equipped with water channel sand cores core at least two along mold cavity vertically extending exhaust raised 10, can be by 3 institute of draw sand core
The gas part of hair introduces in mold cavity, and when mold cavity is not completely covered by aluminum water, mold cavity is discharged in gas, into
One step improves exhaust effect.
The present embodiment is by taking two exhaust protrusions 10 as an example, and two exhaust protrusions 10 are along draw sand core core body length direction etc.
Distance interval setting；And two center of circle lines for being vented protrusion 10 and the center line of draw sand core core body are mutually perpendicular to.Due to small
Water channel sand cores 3 are placed vertically in vehicle tail gas processing box mold, equidistant along draw sand core core body length direction
It can be when aluminum water liquid level covers 1/3 and 2/3 position of draw sand core core height degree, along gas every the exhaust protrusion 10 of setting
Better exhaust is played in body sprawling direction, and structure design is simple ingenious, and practicability is good.
Embodiment 3
Incorporated by reference to shown in Fig. 1 and Fig. 6, the present embodiment is further improved on the basis of embodiment 2, specifically, water
Road positions core print 8 and the mating surface of main sand core 1 is equipped at least two exhaust counterbores 13；The present embodiment is heavy to provide two exhausts
For hole 13, and two exhaust counterbores 13 are arranged along the bottom center of boss structure in mirror symmetry, since water channel sand cores 2 are in vehicle
It is set with being placed vertically in vent gas treatment box mold, the exhaust counterbore 13 of mirror symmetry setting can spread direction for gas along gas side by side
It introduces in main sand core 1, plays preferable exhaust effect, structure design is simple ingenious.
Two exhaust counterbores 13 are the circular counter bore that diameter is 11mm-13mm, and the present embodiment is to provide two circular rows
The diameter of gas counterbore 13 is 12mm, can effectively increase the leaving area of water channel sand cores 2.The present embodiment can be not only vented by two
Mixed gas is introduced on the outside of type chamber by core print 14, and can be drawn 2 gas of water channel sand cores by the air flue of two counterbore inner concaves
It becomes owner of in sand core 1, mold cavity is discharged rapidly by the main sand core 1 of hollow setting, it will row in the case where avoiding friction drop
Gas counterbore 13 is designed to that circular counter bore, leaving area are relatively large；So that the intracavitary molding cabinet of type at 2 top of water channel sand cores
Flange plate structure is compact, and later period tapping thread silk tooth is fuller.
The above, the only preferred embodiment of the utility model, are not intended to limit the utility model, the utility model
Scope of patent protection be subject to claims, it is equivalent made by all specifications and accompanying drawing content with the utility model
Structure change similarly should be included in the protection scope of the utility model.
Claims (10)
1. a kind of sand core positioning structure of improved vehicle box mold, it is characterised in that: including main sand core, water channel sand cores, small
Water channel sand cores, cross sand core and positioning base and the lug sand core being fixed on positioning base, the material of the positioning base
For H13 mould steel, and positioning base is equipped with tap hole, and the main sand core is in hollow setting, and the main sand core passes through cross sand
Core is fixed on tap hole, and molten aluminum enters that type is intracavitary through the fit clearance of cross sand core and tap hole, the draw sand core
The lower end of lower end and main sand core location fit, the upper end of draw sand core and main sand core location fit, the water channel sand cores is inserted into
It is fixed on positioning base, and the upper end of water channel sand cores is equipped with the positioning core print cooperated with main sand core.
2. a kind of sand core positioning structure of improved vehicle box mold according to claim 1, it is characterised in that: described
Cross sand core is overlapped on tap hole upper end, is equipped with round boss in the upper end of cross sand core, the bottom of main sand core is equipped with and circle
The groove of boss cooperation, cross sand core are inserted into the groove of main sand core by round boss and are positioned with it.
3. a kind of sand core positioning structure of improved vehicle box mold according to claim 1, it is characterised in that: described
The upper end of draw sand core is equipped with cone blind hole, and draw sand core is connected by the bolt cooperated with cone blind hole and mold shell positioning
It connects.
4. a kind of sand core positioning structure of improved vehicle box mold according to claim 3, it is characterised in that: described
Draw sand core is equipped with core print boss in the side for being right against cone blind hole, and the core print boss is along its axially vertical main sand core of insertion
It is interior, to be connected to draw sand core and main sand core.
5. a kind of sand core positioning structure of improved vehicle box mold according to claim 4, it is characterised in that: described
The upper end of draw sand core extends out into arc structure along its length, and the center of circle line of arc structure is worn along cone blind hole center
It crosses, and with the axial line of core print boss on same straight line.
6. a kind of sand core positioning structure of improved vehicle box mold according to claim 4, it is characterised in that: described
The circular in cross-section shape of core print boss, and the diameter of core print boss cross section is inserted into main sand core side along it and gradually successively decreases.
7. a kind of sand core positioning structure of improved vehicle box mold described in -6 any one according to claim 1, special
Sign is: the positioning core print is in boss structure, and water channel sand cores are positioned by the main sand core of positioning core print insertion, and with institute
The mating surface for stating main sand core is equipped at least two exhaust counterbores.
8. a kind of sand core positioning structure of improved vehicle box mold according to claim 7, it is characterised in that: described
Being vented counterbore is two, and two exhaust counterbores are arranged along the bottom center of boss structure in mirror symmetry.
9. a kind of sand core positioning structure of improved vehicle box mold according to claim 7, it is characterised in that: in institute
State the exhaust core print that the upper end of water channel sand cores extends at least provided with two along mold cavity upper vertical, each exhaust core print
It is corresponding that the position of tapping fabrication hole is reserved with the intracavitary box flange disk to be formed of type.
10. a kind of sand core positioning structure of improved vehicle box mold according to claim 9, it is characterised in that: two
A exhaust core print is cylindric, and the size of two exhaust core prints is adapted with the size of the threaded hole of box flange disk.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821695174.4U CN208879622U (en) | 2018-10-18 | 2018-10-18 | A kind of sand core positioning structure of improved vehicle box mold |
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| CN201821695174.4U CN208879622U (en) | 2018-10-18 | 2018-10-18 | A kind of sand core positioning structure of improved vehicle box mold |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112517857A (en) * | 2020-11-30 | 2021-03-19 | 太重集团榆次液压工业有限公司 | Casting method for eliminating top surface air holes of blind hole oil duct |
-
2018
- 2018-10-18 CN CN201821695174.4U patent/CN208879622U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112517857A (en) * | 2020-11-30 | 2021-03-19 | 太重集团榆次液压工业有限公司 | Casting method for eliminating top surface air holes of blind hole oil duct |
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