CN107511457A - A kind of core mold, core and its production method - Google Patents
A kind of core mold, core and its production method Download PDFInfo
- Publication number
- CN107511457A CN107511457A CN201710838167.9A CN201710838167A CN107511457A CN 107511457 A CN107511457 A CN 107511457A CN 201710838167 A CN201710838167 A CN 201710838167A CN 107511457 A CN107511457 A CN 107511457A
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- Prior art keywords
- core
- forming cavity
- forming part
- sand
- air intake
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Casting Devices For Molds (AREA)
Abstract
The present invention relates to a kind of core mold, core and its production method, belong to engine art, core mold includes supporting part, plunger tip portion, lower forming cavity, upper forming cavity, penetrates sand portion, gas supply part and pressure core.The present invention improves the uniformity of different cylinder cap air intake duct cores, improves the uniformity of diesel engine properties of product, while improves the yield of core, reduces core deformation.
Description
Technical field
The present invention relates to a kind of mould, especially a kind of core mold, further relate to the core that is obtained by the core mold and
Its production method, belongs to engine art.
Background technology
The inlet and outlet road core of existing diesel engine cylinder cover develops to more cores, complex-shapedization, and such core is empty
Between changes of section it is larger, it is difficult to be molded, the uniformity of each core is difficult to control, and is manufactured using current production technology,
Core deformation is larger, and single inlet and outlet road core is independently molded, and the pairing uniformity in core uniformity and inlet and outlet road is difficult to
Control, the consistency of performance of diesel engine can be influenceed.Therefore, it is necessary to which a kind of new technical scheme is to solve the above problems.
The content of the invention
For the problems of above-mentioned prior art and deficiency, it is an object of the invention to provide a kind of deformation of core compared with
It is small, the easily controllable core mold of the pairing uniformity of core uniformity and inlet and outlet road core.Concrete scheme of the present invention is such as
Under：
A kind of core mold, for manufacturing engine cylinder cover inlet and outlet road core, including supporting part, plunger tip portion, lower forming cavity,
Upper forming cavity, penetrate sand portion, gas supply part and pressure core.On supporting part, lower forming cavity is fixed or movable located at supporting in plunger tip portion
In portion, the shaping of at least two sets of air intake duct cores and at least two sets exhaust duct cores is formed after lower forming cavity and upper forming cavity matched moulds
Portion, wherein, often cover forming part one end core print position connection of air intake duct core so that several one-time formed air intake duct cores
One end core print link together, penetrate sand portion and be located at upper forming cavity top, spray sand and binder combination to forming part, into
Type portion includes buffer part so that mixture flows from top to bottom under the promotion of air pressure along forming part, penetrates on the upside of sand portion and is additionally provided with
Gas supply part, for pressure core on the upside of gas supply part, plunger tip portion ejects the inlet and outlet road core of shaping.
Further, the gas in forming part by the gap between plunger tip portion and lower forming cavity and/or lower forming cavity and
Gap discharge between upper forming cavity.
Further, penetrating sand portion includes some nozzles, and upper forming cavity includes nozzle receiving portion, nozzle receiving portion and forming part
Connection, wherein, the circular core print position for often covering each air intake duct core of air intake duct core forming part is equipped with nozzle receiving portion,
Nozzle is equipped with forming part peak, the connecting portion for often covering air intake duct core；Often arrange each of exhaust duct core forming part
The round core head position of exhaust duct core is provided with nozzle receiving portion, in forming part peak.
Further, in addition to sand portion, gas supply part and the mobile device for pressing core are penetrated in carrying, and the mobile device, which drives, penetrates
Sand portion, gas supply part and pressure core up and down or horizontal movement.
Further, plunger tip portion includes the pars contractilis on supporting part, the top plate on pars contractilis, located at top plate two
The guide rod of side, some plunger tip bars corresponding with the forming part on top plate, lower forming cavity pass through including some plunger tip bars
Through hole, through hole connects with forming part.
Further, penetrating sand portion also includes loading plate, and loading plate is by above and below mobile device or horizontal movement, some nozzles
On loading plate, limited block is additionally provided with loading plate.
Further, gas supply part includes air blowing plate, and air blowing plate is by above and below mobile device or horizontal movement, some inflatable bars
It is corresponding with nozzle receiving portion, on air blowing plate.
Further, press core include can up and down or horizontal movement pressure core plate, located at pressure core plate both sides guide rod with
Pressure core bar located at pressure core plate lower end, pressure core bar are corresponding with nozzle receiving portion.
Further, core print one end of some air intake duct cores is connected by connecting portion, and groove, groove are included on connecting portion
Upper formation seal groove.
The production method of engine cylinder cover inlet and outlet road core of the present invention, comprises the following steps：
Step（1）：Plunger tip portion, lower forming cavity are moved to coremaking position, prepare coremaking；Upper forming cavity is moved to above lower forming cavity
And be bonded, formed after lower forming cavity and upper forming cavity matched moulds at least two sets of air intake duct cores and at least two sets of exhaust duct cores into
Type portion, wherein, often cover forming part one end core print position connection of air intake duct core so that be molded some air intake duct cores by one
End core print links together；
Step（2）：Penetrate sand portion and be moved to forming cavity top compression, the nozzle for penetrating sand portion penetrates sand and adhesive into forming part
Mixture, mixture flow under the promotion of air pressure with forming part shape, reach forming part minimum point, until mixture consolidation,
Without cavity, mixture flow direction is consistent with gas flow direction, the gas in forming part by plunger tip portion and lower forming cavity it
Between gap and/or lower forming cavity and upper forming cavity between gap discharge；
Step（3）：Sand portion to be penetrated to remove, gas supply part is moved to above forming cavity and compressed, and catalyzed gas is injected into forming part,
Under catalyzed gas catalysis, adhesive reaction solidifies sand, and after the completion of supply, gas supply part is removed；
Step（4）：Pressure core is moved to above forming cavity and compressed, and pressure core bar press-in forming part, will penetrate the pressing of sand position；
Step（5）：Pressure core is removed, and upper forming cavity is removed, and plunger tip portion ejects the core of shaping.
The present invention is compared with prior art：Inventive die structure is novel, compact, to inlet and outlet road in core mold into
Die cavity is improved so that the inlet and outlet road core of two pieces cylinder cap is produced once shaping；Air intake duct core is linked to be one by core print
Body, four air intake duct core always one-shot formings, fixed position arrange, and improve the uniformity of different cylinder cap air intake duct cores,
The uniformity of diesel engine properties of product is improved, while improves the yield of core, reduces core deformation；Core mold
The arrangement of interior inlet and outlet road die cavity is flowed using the profile-followed structure slowly declined from top to down beneficial to sand and air-flow in die cavity
And discharge, improve the compact rate of molding and surface quality of core.
Brief description of the drawings
Fig. 1 is the structural representation of the core mold of the present invention；
Fig. 2 is the sectional view of the core mold of the present invention；
Fig. 3 is the structural representation for the core that the core mold of the present invention obtains；
Fig. 4 is the structural representation of the upper forming cavity of the core mold of the present invention；
Fig. 5 is the structural representation of the lower forming cavity of the core mold of the present invention.
Embodiment
With reference to the accompanying drawings and detailed description, the present invention is furture elucidated, it should be understood that following embodiments are only
For illustrating the present invention rather than limitation the scope of the present invention, after the present invention has been read, those skilled in the art are to this
The modification of the various equivalent form of values of invention falls within the application appended claims limited range.
As Figure 1-5, the core mold of the present embodiment, for manufacturing engine cylinder cover inlet and outlet road core, this implementation
Example is diesel engine cylinder cover inlet and outlet road core, including supporting part 1, plunger tip portion 2, lower forming cavity 3, upper forming cavity 4, penetrates sand
Portion 5, gas supply part 6 and pressure core 7, on supporting part 1, lower forming cavity 3 discharges into air flue core shaping cavity of resorption including two in plunger tip portion 2
3.1st, two row's exhaust duct cores shaping cavity of resorption 3.2 and connecting portion 3.3, corresponding to lower forming cavity, upper forming cavity 4 discharges into gas including two
Road core shaping epicoele 4.2, two row's exhaust duct cores shaping epicoele 4.1 and connecting portion 4.3, lower forming cavity 3 and upper forming cavity 4 close
2 forming parts for discharging into air flue core and 2 row's exhaust duct cores are formed after mould, 2, which discharge into air flue core forming part, is located at middle part, exhaust
Road core forming part is located at both sides.Wherein, often discharging into air flue core forming part includes four air intake duct core forming units, each
One end core print position connection of air intake duct core forming unit so that some air intake duct core one end core prints of shaping mutually interconnect
Connect, exhaust duct core forming part includes four exhaust duct core forming units, can be independent shaping, the air intake duct core of shaping
8 and exhaust duct core 9 as shown in figure 3, air intake duct core includes core print 8.1, core print connecting portion 8.2 and on core print connecting portion
Seal groove 8.3, seal groove 8.3 located at core print connecting portion 8.2 groove on, corresponding to the interval between core print and core print.Under
Forming cavity 3 can also be fixed on supporting part 1 by connecting portion 3.3, can also by the connecting portion 3.3 of lower forming cavity 3 and on into
The connecting portion 4.3 of die cavity 4 is together located on existing elevating mechanism, forming cavity 3 and the lower matched moulds of forming cavity 4 in realization.
Supporting part 1 can be the existing underframe in this area, and plunger tip portion 2 includes the pars contractilis 2.1 on supporting part 1, if
It is corresponding with forming part on top plate 2.2 in the top plate 2.2 on pars contractilis 2.1, the guide rod 2.3 located at the both sides of top plate 2.2
Some plunger tip bars 2.4, lower forming cavity include the through hole that some plunger tip bars 2.4 pass through, and through hole connects with forming part, lower forming cavity 3
After in place, minim gap B be present between the through hole of plunger tip bar 2.4 and lower forming cavity 3.Gas in forming part by plunger tip portion with
The minim gap between minim gap and/or lower forming cavity and upper forming cavity between lower forming cavity（Die joint）Discharge.
Sand portion 5 is penetrated on the upside of the upper forming cavity, the mixture of sand grain and adhesive is under the promotion of air pressure along forming part
Move, in the present embodiment, adhesive can be resin or other existing adhesives, and penetrating sand portion includes some nozzles
5.2, the upper top of forming cavity 4 also includes nozzle receiving portion, and nozzle receiving portion connects with forming part, nozzle 5.2 and nozzle receiving portion
Matching, do not change the core print shape of shaping, wherein, often discharge into the both ends core print of each air intake duct core of air flue core forming part
Position is equipped with nozzle receiving portion, that is, the corresponding two nozzle receiving portions of each air intake duct core forming unit, such as Fig. 2 institutes
Show, the core print position for often discharging into each air intake duct core of air flue core forming part is provided with nozzle receiving portion.Penetrating sand portion 5 also includes
Loading plate 5.3, loading plate 5.3 are connected by connecting portion 5.4 with mobile device, and some nozzles 5.2 are held on loading plate 5.3
Limited block 5.1 is additionally provided with support plate.Mixture flows under the promotion of air pressure with forming part shape, reaches forming part minimum point,
Until mixture consolidation, no cavity, mixture flow direction A are consistent with gas flow direction.
Penetrate the upside of sand portion 5 and be additionally provided with gas supply part 6, gas supply part 6 includes air blowing plate 6.1, and some on air blowing plate 6.1 blow
Gas bar 6.2, air blowing plate 6.1 are connected by connecting portion 6.3 with mobile device, and some inflatable bars are corresponding with nozzle receiving portion, shape
Matched with nozzle receiving portion, in the present embodiment, catalyzed gas can be triethylamine or other existing catalyzed gas.
Press core 7 include can up and down or horizontal movement pressure core plate 7.2, located at the He of guide rod 7.1 for pressing core plate 7.2 both sides
Pressure core bar 7.3 located at pressure core plate 7.2 lower end, pressure core bar 7.3 is corresponding with nozzle receiving portion, and pressure core plate 7.2 passes through connecting portion 7.4
It is connected with mobile device.
The present embodiment also includes carrying and penetrates sand portion 5, gas supply part 6 and the mobile device for pressing core 7, and mobile device is existing
Structure, do not elaborate herein, can drive sand portion of penetrating, gas supply part and pressure core up and down or horizontal movement, such as can be with
It is conveying device of circulation etc..
The production technology for being used for core in diesel engine cylinder cover inlet and outlet road of the present embodiment comprises the following steps：
Step（1）：Plunger tip portion, lower forming cavity are moved to coremaking position, prepare coremaking；Upper forming cavity is moved to above lower forming cavity
And be bonded, the forming part of 2 sets of air intake duct cores and 2 sets of exhaust duct cores is formed after lower forming cavity and upper forming cavity matched moulds, 2 pack into
The forming part of air flue core is located at middle part, and respectively there are the forming part of a set of exhaust duct core, air intake duct core and 2 sets of exhaust ducts in both sides
The forming part of core is symmetrical arranged, wherein, often discharge into forming part one end core print position connection of air flue core so that if shaping
Dry air intake duct core one end core print is connected with each other；
Step（2）：Penetrate sand portion and be moved to above forming cavity and compress, the nozzle for penetrating sand portion penetrates sand into forming part and resin mixes
Compound, as shown in Fig. 2 mixture flows with the shape under the promotion of air pressure, reach up to die cavity minimum point and by plunger tip bar and
The gas of gap discharge type intracavitary between mould, mixture flow direction is consistent with gas flow direction, with the shape and along again
Force direction is downwards to minimum point, until mixture consolidation, no cavity, gas in forming part by plunger tip portion and lower forming cavity it
Between gap and/or lower forming cavity and upper forming cavity between gap discharge；
Step（3）：Penetrate sand portion to remove, gas supply part is moved to above forming cavity and compressed, and triethylamine is injected into forming part, three
Under ethamine catalysis, resin reaction solidifies sand, and after the completion of supply, gas supply part is removed；
Step（4）：Pressure core is moved to above forming cavity and compressed, and pressure core bar press-in forming part, will penetrate the pressing of sand position；
Step（5）：Pressure core is removed, and upper forming cavity is removed, and plunger tip portion ejects the core of shaping.Inlet and outlet road core is one by one
Corresponding, uniformity is good, as shown in figure 3, four air intake duct cores on a cylinder cap are connected together by core print, uniformity, stably
Property it is good, further improve diesel product consistency of performance.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.
Claims (10)
- A kind of 1. core mold, for manufacturing engine cylinder cover inlet and outlet road core, it is characterised in that：Including supporting part, plunger tip Portion, lower forming cavity, upper forming cavity, penetrate sand portion, gas supply part and pressure core.Plunger tip portion on the supporting part, lower forming cavity fix or It is movably arranged on support, at least two sets of air intake duct cores and at least two sets exhausts is formed after lower forming cavity and upper forming cavity matched moulds The forming part of road core, wherein, often cover forming part one end core print position connection of air intake duct core so that one-time formed some One end core print of individual air intake duct core links together, and penetrates sand portion and is located at upper forming cavity top, sprays sand to forming part and glues Cocktail mix, forming part include buffer part so that mixture flows from top to bottom under the promotion of air pressure along forming part, penetrates sand Gas supply part is additionally provided with the upside of portion, for pressure core on the upside of gas supply part, plunger tip portion ejects the inlet and outlet road core of shaping.
- 2. core mold according to claim 1, it is characterised in that：Gas in forming part passes through plunger tip portion and lower shaping Gap discharge between gap and/or lower forming cavity and upper forming cavity between chamber.
- 3. core mold according to claim 1, it is characterised in that：Penetrating sand portion includes some nozzles, and upper forming cavity includes Nozzle receiving portion, nozzle receiving portion connect with forming part, wherein, often cover each air intake duct core of air intake duct core forming part Circular core print position is equipped with nozzle receiving portion, and in forming part peak, often the connecting portion of set air intake duct core, which is equipped with, penetrates Mouth；The round core head position for often arranging each exhaust duct core of exhaust duct core forming part is provided with nozzle receiving portion, in forming part Peak.
- 4. core mold according to claim 1, it is characterised in that：Also sand portion, gas supply part and pressure core are penetrated including carrying Mobile device, the mobile device drives sand portion of penetrating, gas supply part and pressure core up and down or horizontal movement.
- 5. according to the core mold described in one of claim 1-4, it is characterised in that：Plunger tip portion includes stretching on supporting part Contracting portion, the top plate on pars contractilis, the guide rod located at top plate both sides are corresponding with the forming part some on top plate Plunger tip bar, lower forming cavity include the through hole that some plunger tip bars pass through, and through hole connects with forming part.
- 6. according to the core mold described in one of claim 1-4, it is characterised in that：Penetrating sand portion also includes loading plate, loading plate By the way that above and below mobile device or horizontal movement, some nozzles are additionally provided with limited block on loading plate on loading plate.
- 7. according to the core mold described in one of claim 1-4, it is characterised in that：Gas supply part includes air blowing plate, and air blowing plate leads to Cross mobile device up and down or horizontal movement, some inflatable bars are corresponding with nozzle receiving portion, on air blowing plate.
- 8. according to the core mold described in one of claim 1-4, it is characterised in that：Pressing core to include can up and down or horizontal movement Pressure core plate, the guide rod located at pressure core plate both sides and the pressure core bar located at pressure core plate lower end, pressure core bar and nozzle receiving portion pair Should.
- 9. utilize the core of the core mold manufacture described in claim 1-8, it is characterised in that：The core print of some air intake duct cores One end is connected by connecting portion, and groove is included on connecting portion, seal groove is formed on groove.
- A kind of 10. production method of engine cylinder cover inlet and outlet road core, it is characterised in that：Comprise the following steps：Step（1）：Plunger tip portion, lower forming cavity are moved to coremaking position, prepare coremaking；Upper forming cavity is moved to above lower forming cavity And be bonded, formed after lower forming cavity and upper forming cavity matched moulds at least two sets of air intake duct cores and at least two sets of exhaust duct cores into Type portion, wherein, often cover forming part one end core print position connection of air intake duct core so that be molded some air intake duct cores by one End core print links together；Step（2）：Penetrate sand portion and be moved to forming cavity top compression, the nozzle for penetrating sand portion penetrates sand and adhesive into forming part Mixture, mixture flow under the promotion of air pressure with forming part shape, reach forming part minimum point, until mixture consolidation, Without cavity, mixture flow direction is consistent with gas flow direction, the gas in forming part by plunger tip portion and lower forming cavity it Between gap and/or lower forming cavity and upper forming cavity between gap discharge；Step（3）：Sand portion to be penetrated to remove, gas supply part is moved to above forming cavity and compressed, and catalyzed gas is injected into forming part, Under catalyzed gas catalysis, adhesive reaction solidifies sand, and after the completion of supply, gas supply part is removed；Step（4）：Pressure core is moved to above forming cavity and compressed, and pressure core bar press-in forming part, will penetrate the pressing of sand position；Step（5）：Pressure core is removed, and upper forming cavity is removed, and plunger tip portion ejects the core of shaping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710838167.9A CN107511457B (en) | 2017-09-15 | 2017-09-15 | Sand core mold, sand core and production method of sand core mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710838167.9A CN107511457B (en) | 2017-09-15 | 2017-09-15 | Sand core mold, sand core and production method of sand core mold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107511457A true CN107511457A (en) | 2017-12-26 |
| CN107511457B CN107511457B (en) | 2020-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710838167.9A Active CN107511457B (en) | 2017-09-15 | 2017-09-15 | Sand core mold, sand core and production method of sand core mold |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111531162A (en) * | 2020-04-30 | 2020-08-14 | 浙江长兴前进机械有限公司 | Marine gearbox body casting production line and process thereof |
| CN111565868A (en) * | 2018-10-16 | 2020-08-21 | 苏州明志科技股份有限公司 | Air blowing cover, core making device and air blowing method |
| CN111774535A (en) * | 2020-06-24 | 2020-10-16 | 芜湖新兴新材料产业园有限公司 | Grouting sleeve core manufacturing mold and grouting sleeve core manufacturing method |
| CN113560500A (en) * | 2021-07-07 | 2021-10-29 | 上柴动力海安有限公司 | Diesel engine cylinder cover casting air inlet duct integral core and manufacturing process thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111565868A (en) * | 2018-10-16 | 2020-08-21 | 苏州明志科技股份有限公司 | Air blowing cover, core making device and air blowing method |
| CN111565868B (en) * | 2018-10-16 | 2021-12-21 | 苏州明志科技股份有限公司 | Air blowing cover, core making device and air blowing method |
| CN111531162A (en) * | 2020-04-30 | 2020-08-14 | 浙江长兴前进机械有限公司 | Marine gearbox body casting production line and process thereof |
| CN111774535A (en) * | 2020-06-24 | 2020-10-16 | 芜湖新兴新材料产业园有限公司 | Grouting sleeve core manufacturing mold and grouting sleeve core manufacturing method |
| CN113560500A (en) * | 2021-07-07 | 2021-10-29 | 上柴动力海安有限公司 | Diesel engine cylinder cover casting air inlet duct integral core and manufacturing process thereof |
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| Publication number | Publication date |
|---|---|
| CN107511457B (en) | 2020-01-14 |
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