CN106734940B - The chucking method and the sand core of a kind of system that is loaded of 3D printing sand core, sand core - Google Patents
The chucking method and the sand core of a kind of system that is loaded of 3D printing sand core, sand core Download PDFInfo
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- CN106734940B CN106734940B CN201710038582.6A CN201710038582A CN106734940B CN 106734940 B CN106734940 B CN 106734940B CN 201710038582 A CN201710038582 A CN 201710038582A CN 106734940 B CN106734940 B CN 106734940B
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- sand core
- core
- bottom plate
- loaded
- cross bar
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
- B22C9/108—Installation of cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
- B22C9/103—Multipart cores
Abstract
The present invention relates to a kind of systems that is loaded of 3D printing sand core in sand core manufacture technology field, the chucking method of sand core and the sand core, the wherein system that is loaded of 3D printing sand core of the invention, it include the group core bottom plate for sand core assembly, sliding is installed with several kelly mechanisms for the sand core that is loaded on described group of core bottom plate, on described group of core bottom plate several guide grooves are equipped with to the different radial directions of periphery with respect to center, the lower part of the kelly mechanism is equipped with the double bar structures clamped with guide groove sliding, the top of the kelly mechanism is equipped with the nut pressure plate structure for compressing sand core to be assembled.Sand core and group core bottom plate can be fixed as one by the system of being loaded of 3D printing sand core using the present invention by assembled good sand core from the different location of periphery, sand core entirety stiffness is set to greatly improve, the 3D printing sand core after assembly may be implemented to pour into a mould together with the whole transhipment for the system of being loaded and naked core, the process costs of sand core floor sand are eliminated, and reduce the risk that sand core rotation causes shift.
Description
Technical field
The present invention relates to sand core manufacture technology field, more particularly to a kind of system that is loaded of 3D printing sand core, chucking method
And the sand core.
Background technology
With the popularization and application of 3D printing technique, existed using the method that 3D printing sand core carries out Foundry Production at present
It is gradually applied in industry, casting flow includes sand core printing, flow coat drying, assembly of sand core and cast, finally obtains required casting
Part.This method does not have to make mold, without considering the molding of traditional handicraft and removing material problem, it can be achieved that various labyrinth sand cores
Disposable high-precision printing, be very suitable for the casting of testpieces or small lot casting.
Under normal circumstances, the 3D printing sand core being completed is put into steel sandbox when production, periphery landfill resin sand,
To obtain enough peripheral intensity.But it be easy to cause sand core in this way to occur dislocation in handling transfer process, rub sand
The problems such as, bring hidden danger to castings production.Meanwhile because sandbox is difficult to match, need to consume a large amount of resin in production process
Sand, production cost is high, cannot be satisfied the production needs of multi-assortment production.So the 3D printing sand core in small and medium-sized casting is given birth to
During production, the case that buries of sand core how is eliminated, while ensureing that sand core is integrated with enough rigidity and resists floating in molten iron cavity filling process
Power is to improve 3D printing sand core quality to prevent sand core from generating rise type and core floatation in casting process because of overall stiffness deficiency
Key.
Invention content
There are problems for the printings of 3D in the prior art sand core group core assembling process by the present invention, provide a kind of 3D printing sand
The system that is loaded of core is directly poured into a mould after realizing sand core assembly without burying case with improving the sand core overall stiffness after assembly.
The object of the present invention is achieved like this, a kind of system that is loaded of 3D printing sand core, includes assembled for sand core
Core bottom plate is organized, is slided on described group of core bottom plate and is installed with several kelly mechanisms for the sand cores that are loaded, phase on described group of core bottom plate
Several guide grooves are equipped with to the different radial directions in center outside week, the lower part of the kelly mechanism is equipped with slides card with guide groove
Double bar structures of dress, the top of the kelly mechanism are equipped with the nut pressure plate structure for compressing sand core to be assembled.
The sand core system of being loaded using the present invention can by assembled good sand core from the different location of periphery by sand core and group
Core bottom plate is fixed as one, and sand core entirety stiffness is made to greatly improve, and the 3D printing sand core after assembly may be implemented and be together with being loaded
The whole transhipment and naked core cast of system, eliminate the process costs of sand core floor sand, and reduce the wind that sand core rotation causes shift
Danger reduces sand core and occurs rise type and core floatation problem in casting process.
Whole fork dress and handling, the center of underside of described group of core bottom plate after being fixed for ease of sand core and the system assembles that are loaded
Equipped with support base one, the bottom side of the group core bottom plate of opposite center of underside periphery is equipped with several and one level support base of support base
Two, the neighboring of described group of core bottom plate is equipped with several lifting lugs convenient for hanging.In the structure of the present invention, support base one and support
A group core backplanes support is flat on group core platform by seat two, and the bottom of the group core bottom plate between support base one and support base two
Each neutral gear spacing stretches into fork dress transhipment group core platform for fork truck front fork.
For ease of the installation of kelly mechanism, each guide groove is angularly uniformly distributed with respect to center on described group of core bottom plate, institute
The groove depth for stating guide groove runs through the direction of plate thickness.The structure of the present invention, angularly equally distributed guide groove is for different sizes
It is selected when with the sand core assembly of structure, the versatility of raising group core bottom plate.
For ease of group core bottom plate together with sand core product handling assembled thereon, the lifting lug is inside from group core bottom plate periphery
Shear what partial recesses were formed in portion.
The hook of connector when for ease of handling holds fixation, and the lifting lug is clipped rear in " T " along the plane of group core bottom plate
Font.
It is flexibly connected with group core bottom plate for ease of kelly mechanism and fixing of the kelly mechanism to sand core, kelly mechanism packet
Montant is included, double cross bar mechanisms are arranged in the lower part of the montant, and double cross bar mechanisms include being vertically connected at montant lower end
The cross bar one in portion, the upside of the cross bar one are fixedly connected with the cross bar two parallel with cross bar one, the cross bar two and cross bar one it
Between spacing be used for through-thickness gap clamping group core bottom plate, the montant of the downside of the cross bar two and the outer diameter of cross bar one are small
It is equipped with external thread section in the top of the groove width of guide groove, the montant, cooperation is equipped with locking nut and use on the external thread section
It is equipped with hand rod in the medium position of the pressing plate of pressing sand core, the montant, the direction of the hand rod is perpendicular to montant and cross
Bar one.
Along guide groove balanced sequence, the cross bar one and cross bar two after being connect with group core backplane card load for ease of kelly mechanism
The center line symmetrical setting of opposite montant is in the bottom of montant.
For prevent kelly mechanism fix sand core after by outer force effect vibration, outside card of each kelly mechanism from sand core
Gu the position of sand core, the sand core outside corresponding kelly mechanism is respectively provided with the longitudinal fluting one of embedded montant, the sand
The position that the position of core and group core contacts baseplate corresponds to cross bar two is correspondingly provided with the groove two for embedding cross bar two.
For further realize the purpose of the present invention in order to assemble can naked core cast sand core, the present invention also provides one kind
The chucking method that 3D printing sand core assembly is carried out using the above-mentioned system that is loaded, is included the following steps：
1）When carrying out the structure design of 3D printing sand core, determine each kelly mechanism outside sand core according to the structure size of sand core
The position that is loaded of side, quantity, size and the size for organizing core bottom plate of kelly mechanism；And it is set in the position that is respectively loaded of 3D printing sand core
Set the groove one and groove two for corresponding embedded montant and cross bar two；
2）The assembled position of sand core is determined in a group core bottom lining out, and make to be used for installation card on sand core according to sand core size
Each groove one of linkage and the position of the guide groove on group core bottom plate correspond；
3）According to each composition position of scribing position assembly sand core on group core bottom plate, each of installation card linkage is being needed
It is oriented to groove location, the cross bar one of kelly mechanism is gone to parallel with guide groove and is downwardly into guide groove on the upside of group core bottom plate
It is stretched out again from group core bottom base plate, then kelly mechanism is rotated by 90 °, keeps hand rod vertically outside, and makes cross bar one and cross bar
Then kelly mechanism is pushed into close to sand core along guide groove until montant is embedded in sand by two mounting boards in the downside and upside of group core bottom plate
In the corresponding groove of core one, cross bar two is embedded in the corresponding groove of sand core two, then from the top clamping platen of montant and is passed through
Locking nut spinning pressing plate, with fixing card linkage, each corresponding position that whole kelly mechanisms is installed on to sand core successively is complete
At the assembly of sand core.
The naked core sand core that third object of the present invention is to provide a kind of can directly to pour into a mould without burying sand, which passes through upper
It states and buries case without back-up sand after chucking method assembly fixes, be directly transported through cast.
Description of the drawings
Fig. 1 is the system structure diagram that is loaded of the 3D printing sand core of invention.
Fig. 2 is the schematic diagram of the upper surface of group core bottom plate.
Fig. 3 is the schematic diagram of the bottom surface of group core bottom plate.
Fig. 4 is the structural schematic diagram of kelly mechanism.
Wherein, 1 group of core bottom plate；101 guide grooves；102 lifting lugs；103 support bases one；104 support bases two；2 sand cores；201 is recessed
Slot one；3 kelly mechanisms；301 montants；302 cross bars one；303 cross bars two；304 hand rods；305 pressing plates；306 locking nuts.
Specific implementation mode
Embodiment 1
Include the group core bottom for sand core assembly if Fig. 1-4 show the system that is loaded of the 3D printing sand core of the present invention
Plate 1, on this group of core bottom plate 1 sliding be installed with several kelly mechanisms 3 for the sand cores 2 that are loaded, on group core bottom plate 1 opposite center to
The different radial directions of periphery are equipped with several guide grooves 101, and the lower part of kelly mechanism 3 is equipped with and the sliding clamping of guide groove 101
Double bar structures, the top of kelly mechanism 3 are equipped with the nut pressure plate structure for compressing sand core 2 to be assembled.
Whole fork dress and handling after being fixed for ease of sand core and the system assembles that are loaded, the bottom of group core bottom plate 1 of the invention
Side center is equipped with support base 1, and the bottom side of the group core bottom plate 1 of opposite center of underside periphery is equipped with several and support base 1
Level support base 2 104.In the present embodiment, support base 1 is in the thick reinforcing plate structure of right-angled intersection, with a group core bottom plate 1
It is fixedly connected；Support base 2 104 is that plate thickness is processed and and is fixedly connected with a group core bottom plate 1.The neighboring of group core bottom plate 1 is set
There are several lifting lugs 102 convenient for hanging.To make group core bottom plate 1 that there is enough whole degree of support stiffness peace, the group of the present embodiment
1 plate of core bottom selects the steel plate that thickness is more than or equal to 20mm, the flatness of surface of steel plate that should meet the surface smoothness needed for group core,
The flatness of general steel plate must be less than 5mm.Using the present invention group of core floor structure, support base 1 and support base 2 104 will
1 support of group core bottom plate is flat on group core platform, and 1 bottom of group core bottom plate between support base 1 and support base 2 104
Each neutral gear spacing for fork truck front fork stretch into fork dress transhipment group core bottom plate；Suspender suspension hook lifting lug transhipment group core can also be passed through
Bottom plate and the sand core being fixed thereon.
For ease of the installation of kelly mechanism, each guide groove 101 angularly uniformly divides with respect to center on of the present invention group of core bottom plate 1
Cloth, the groove depth of guide groove 101 run through the direction of plate thickness.The structure of the present invention, angularly equally distributed guide groove 101 is not for
With size and structure sand core assembly when select, the versatility of raising group core bottom plate 1.
For ease of group core bottom plate together with the handling of sand core product assembled thereon, lifting lug is inside from group 1 periphery of core bottom plate
Shear T " the font lifting lugs that partial recesses are formed in portion.
It is flexibly connected with group core bottom plate for ease of kelly mechanism and fixing of the kelly mechanism to sand core, kelly machine of the invention
Structure 1 includes montant 101, the double cross bar mechanisms of lower part setting of montant 101.Wherein, double cross bar mechanisms include being vertically connected at montant
The cross bar 1 of 101 lower ends, one 302 upside of cross bar are fixedly connected with the cross bar two 303 parallel with cross bar 1, cross bar two
Spacing between 303 and cross bar 1 is slightly larger than group core 3-5mm of base plate thickness, in order between double cross bar mechanism through-thickness
Gap clamping group core bottom plate 1；For convenience of cross bar 1 from 101 upside of guide groove along the thickness direction insertion group core of guide groove 101
The downside of bottom plate 1, the montant 301 of 2 303 downside of cross bar and the outer diameter of cross bar 1 are respectively less than the groove width of guide groove 101, montant
301 top is equipped with external thread section, and cooperation is equipped with locking nut 306 and the pressing plate for pressing sand core 2 on the external thread section
305；For ease of manipulating kelly mechanism, the medium position of montant 301 is equipped with hand rod 304, the direction of the hand rod 304 perpendicular to
Montant 301 and cross bar 1.
Along 101 balanced sequence of guide groove, cross bar 1 and cross after being connected with 1 clamping of group core bottom plate for convenience of kelly mechanism 3
The center line symmetrical setting of the montant 301 relatively of bar 2 303 is in the bottom of montant 301, as shown in Figure 4.
For after preventing kelly mechanism 3 from fixing sand core 2 by outer force effect vibration, in the present embodiment, each kelly mechanism 3 is from sand
The outside of core 2 fixes sand core, and the longitudinal direction that the position of 2 outside corresponding kelly mechanism 3 of sand core is respectively provided with embedded montant 301 is recessed
Slot 1, the position that the position that sand core 2 is contacted with group core bottom plate 1 corresponds to cross bar 2 303 are correspondingly provided with for embedding cross bar two
303 groove two.After kelly mechanism clamps in place and is screwed by nut pressing plate, montant 301 is embedded in the corresponding groove of sand core
In one 201, while cross bar 2 303 is correspondingly embedded in groove two, and outer force effect causes kelly mechanism after can preventing sand core from fixing
Vibration.
The sand core system of being loaded using the present invention can be by assembled good sand core 2 on group core bottom plate 1 from the different positions of periphery
It sets and sand core 2 and group core bottom plate 1 is fixed as one, so that 2 core entirety stiffness of sand is greatly improved, the 3D printing after assembly may be implemented
Sand core is poured into a mould together with the whole transhipment for the system of being loaded and naked core, saves the process costs of sand core floor sand, and reduces sand core rotation
Cause the risk of shift.
Embodiment 2
The present embodiment is the dress that 3D printing sand core assembly is carried out using the system that is loaded of the 3D printing sand core of above-described embodiment 1
Chucking method specifically comprises the following steps：
1）When carrying out the structure design of 3D printing sand core, determine each kelly mechanism 3 in sand core according to the structure size of sand core 2
The position that is loaded in outside, the usage quantity of kelly mechanism 3, the size of size and group core bottom plate 1；And in each dress of 3D printing sand core
Groove one 201 and groove two of the card position setting for corresponding embedded montant 301 and cross bar 2 303；
2）After each sand core component flow coat drying of 3D printing qualification, before carrying out sand core assembly, according to sand core size in a group core
On bottom plate 1 cross determine sand core assembled position, and make on sand core 2 for installation card linkage montant each groove 1 with
The position of guide groove 101 on group core bottom plate 1 corresponds；
3）When sand core assembly, according to each composition position of scribing position assembly sand core on group core bottom plate 1, needing to install
101 position of each guide groove of kelly mechanism 3 goes to the cross bar 1 of each kelly mechanism parallel with guide groove 101 and from a group core
The upside of bottom plate 1 is downwardly into guide groove 101 and is stretched out again from group 1 bottom of core bottom plate, is then rotated by 90 ° kelly mechanism, makes hand
Handrail 304 is vertical outward, and makes cross bar 1 and the movable mounting board of cross bar 2 303 in the downside and upside of group core bottom plate 1, then
Kelly mechanism 3 is pushed on the outside of the sand core along guide groove 101 until montant 301 is embedded in the corresponding groove of sand core 1, it is horizontal
Bar 2 303 is embedded in the corresponding groove of sand core two, then from the top clamping platen 305 of montant 301 and passes through locking nut 305
Spinning pressing plate, with fixing card linkage；And whole kelly mechanisms is installed on each corresponding position of sand core by method successively according to this
Complete the assembly of sand core.
Embodiment 3
The present embodiment is to provide a kind of 3D printing sand that the chucking method of the 3D printing sand core using embodiment 2 is assembled
Core, the sand core form the naked core sand that can be directly poured into a mould without floor sand with being loaded after system assembly and fixing for 3D printing sand core
Core eliminates the process and process costs for burying sand.
Above-mentioned be loaded system and chucking method and the sand core structure made of being loaded of the present invention, particularly suitable small and medium-sized casting
3D printing sand core production process in, suitable for high-volume, the trial production process of small lot or single-piece sand core.
Claims (10)
1. a kind of system that is loaded of 3D printing sand core includes the group core bottom plate for sand core assembly, which is characterized in that described group of core
Sliding is installed with several for the kelly mechanisms of sand cores of being loaded on bottom plate, with respect to center to the difference of periphery on described group of core bottom plate
Radial direction is equipped with several guide grooves, and the lower part of the kelly mechanism is equipped with the double bar structures clamped with guide groove sliding, institute
The top of kelly mechanism is stated equipped with the nut pressure plate structure for compressing sand core to be assembled.
2. the system that is loaded of 3D printing sand core according to claim 1, which is characterized in that in the bottom side of described group of core bottom plate
The heart is equipped with support base one, and the bottom side of the group core bottom plate of opposite center of underside periphery is equipped with several and one level support of support base
The neighboring of seat two, described group of core bottom plate is equipped with several lifting lugs convenient for hanging.
3. the system that is loaded of 3D printing sand core according to claim 1, which is characterized in that be respectively oriented on described group of core bottom plate
Slot is angularly uniformly distributed with respect to center, and the groove depth of the guide groove runs through the direction of plate thickness.
4. the system that is loaded of 3D printing sand core according to claim 2, which is characterized in that the lifting lug is from a group core bottom plate
It internally shears partial recesses and is formed in periphery.
5. the system that is loaded of 3D printing sand core according to claim 4, which is characterized in that the lifting lug is along group core bottom plate
In T-shaped after plane is clipped.
6. according to the system that is loaded of claim 1-5 any one of them 3D printing sand core, which is characterized in that the kelly machine
Structure includes montant, and double cross bar mechanisms are arranged in the lower part of the montant, and double cross bar mechanisms include being vertically connected at montant
The cross bar one of lower end, one upside of the cross bar are fixedly connected with the cross bar two parallel with cross bar one, the cross bar two and cross bar
Spacing between one is used for through-thickness gap clamping group core bottom plate, the montant of two downside of the cross bar and the outer diameter of cross bar one
The top of the respectively less than groove width of guide groove, the montant is equipped with external thread section, and cooperation is equipped with locking nut on the external thread section
It is equipped with hand rod with the medium position of the pressing plate for pressing sand core, the montant, the direction of the hand rod is perpendicular to montant
With cross bar one.
7. the system that is loaded of 3D printing sand core according to claim 6, which is characterized in that the cross bar one and cross bar two-phase
To the center line symmetrical setting of montant in the bottom of montant.
8. the system that is loaded of 3D printing sand core according to claim 7, which is characterized in that each kelly mechanism is from sand core
Outside fix sand core, the position of corresponding kelly mechanism is respectively provided with the longitudinal fluting of embedded montant on the outside of the sand core
One, the position of the sand core and group core contacts baseplate is correspondingly provided with the groove for embedding cross bar two corresponding to the position of cross bar two
Two.
9. a kind of system that is loaded using described in claim 7 or 8 carries out the chucking method of 3D printing sand core assembly, feature exists
In including the following steps：
1）When carrying out the structure design of 3D printing sand core, determine each kelly mechanism on the outside of sand core according to the structure size of sand core
Be loaded position, quantity, size and the size for organizing core bottom plate of kelly mechanism；And it is used in the position setting that is respectively loaded of 3D printing sand core
In the groove one and groove two of corresponding embedded montant and cross bar two；
2）The assembled position of sand core is determined in a group core bottom lining out, and make on sand core for installing kelly machine according to sand core size
Each groove one of structure and the position of the guide groove on group core bottom plate correspond；
3）According to each composition position of scribing position assembly sand core on group core bottom plate, in each guiding for needing installation card linkage
Groove location, by the cross bar one of kelly mechanism go to it is parallel with guide groove and be downwardly on the upside of group core bottom plate guide groove again from
Group core bottom base plate is stretched out, and is then rotated by 90 ° kelly mechanism, is kept hand rod vertically outside, and cross bar one and cross bar two is made to press from both sides
It is stuck in the downside and upside of group core bottom plate, is then pushed into kelly mechanism close to sand core until montant is embedded in sand core pair along guide groove
In the groove one answered, cross bar two is embedded in the corresponding groove of sand core two, then from the top clamping platen of montant and passes through locking
Nut spinning pressing plate, with fixing card linkage, each corresponding position that whole kelly mechanisms is installed on to sand core successively completes sand
The assembly of core.
10. the sand core that a kind of chucking method using the 3D printing sand core assembly described in claim 9 is loaded, which is characterized in that
The sand core is loaded by the system assembly that is loaded and securely buries case without back-up sand afterwards, and cast is directly transported through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710038582.6A CN106734940B (en) | 2017-01-19 | 2017-01-19 | The chucking method and the sand core of a kind of system that is loaded of 3D printing sand core, sand core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710038582.6A CN106734940B (en) | 2017-01-19 | 2017-01-19 | The chucking method and the sand core of a kind of system that is loaded of 3D printing sand core, sand core |
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| Publication Number | Publication Date |
|---|---|
| CN106734940A CN106734940A (en) | 2017-05-31 |
| CN106734940B true CN106734940B (en) | 2018-08-24 |
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| CN107598096B (en) * | 2017-09-26 | 2020-02-11 | 常州中车汽车零部件有限公司 | Fastening sand mould frock and turbine shell casting system |
| CN107825055A (en) * | 2017-12-14 | 2018-03-23 | 江苏联峰工业设备安装工程有限公司 | It is matched in the spherical valve core clamping tooling of built-up welder |
| CN109290521A (en) * | 2018-09-19 | 2019-02-01 | 共享装备股份有限公司 | A kind of type core gripping mechanism |
| CN109365755B (en) * | 2018-09-19 | 2020-10-16 | 共享装备股份有限公司 | Core clamping device |
| CN109175307B (en) * | 2018-11-07 | 2021-06-08 | 西安西工大超晶科技发展有限责任公司 | 3D printing sand mold antigravity casting forming method |
| CN109940137A (en) * | 2019-04-29 | 2019-06-28 | 共享智能铸造产业创新中心有限公司 | A kind of taper tooling |
| CN112247074A (en) * | 2020-09-23 | 2021-01-22 | 共享智能铸造产业创新中心有限公司 | Core clamping and pressing method and clamping and pressing device thereof |
| CN114273611A (en) * | 2021-12-10 | 2022-04-05 | 苏州明志科技股份有限公司 | Method for forming sand core lock core |
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