CN109128019A - A kind of core head structure for being not easy to be mixed into residual sand and positioning stablity - Google Patents
A kind of core head structure for being not easy to be mixed into residual sand and positioning stablity Download PDFInfo
- Publication number
- CN109128019A CN109128019A CN201710558564.0A CN201710558564A CN109128019A CN 109128019 A CN109128019 A CN 109128019A CN 201710558564 A CN201710558564 A CN 201710558564A CN 109128019 A CN109128019 A CN 109128019A
- Authority
- CN
- China
- Prior art keywords
- core
- positioning
- core print
- chill
- mixed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- 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
- B22C9/22—Moulds for peculiarly-shaped castings
- B22C9/24—Moulds for peculiarly-shaped castings for hollow articles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The present invention is a kind of core head structure for being not easy to be mixed into residual sand and positioning stablity, in the moulding of Worm gear pressurizing unit scroll, use volute flow passage core, it is positioned by core print in inlet flange mouth, since wall thickness differs larger, the chills equilibrium temperature such as air inlet flange, core print is arranged in chill hole, there is only gaps, and there are also floating phenomenons.Now core print feeding is changed small, core print and chill hole is made to generate 5mm or so gap, when moulding makes molding sand enter clearance cure positioning, not only without gap, also eliminates positioning floating phenomenon.
Description
Technical field
The core head structure that foundary industry sand core positions in shell mould.
Background technique
Our company accept the fertile company's Worm gear pressurizing unit scroll production task in Ningbo in process of production, because of volute casting
Wall thickness difference is larger, to keep casting cooling velocity close, therefore chill, but inlet flange hole is arranged at positions such as such as inlet flanges
It mouthful is also the position of runner core print positioning, since the aperture of chill and core print cannot be fitted close, there are more biggish gap,
Residual sand is mixed into when moulding in chill bore clearance, while core print also being made to be also easy to produce floating, influences runner core position in type chamber
Stability.
Summary of the invention
The present invention is a kind of core head structure for being not easy to be mixed into residual sand and positioning stablity, and each section of core print and chill is done and is changed
Change into, core print outer diameter small, reserves larger gap, shell mould molding sand can enter the gap of chill and core print in moulding, lean on shell mould type
Sand and core print, which are fitted close, to be supported, solve chill and core print there are intermittencies.
The technical scheme is that the core print outer diameter of runner core is less than chill bore portion, sub-fraction is only stayed in core print rear end
It is relatively large in diameter predetermined position when making lower core to use, gap is set in 5mm or so, and in this gap, shell mould molding sand enters when moulding, fills out
Gap whole has been filled, last positioning is completed.
Remarkable result of the invention is that shell mould and core print are fitted close, internal without residual sand without any gap, positioning stablity without
It floats, overlap batch seam will not be generated.
Detailed description of the invention
Fig. 1 runner core core print positions cross-sectional view with chill in shell mould
1, shell mould 2, runner core 3, chill 4, core print part 5, positioning head
Specific embodiment
4 outer diameter of core print of runner core 2 is less than 3 aperture of chill, does in the positioning head 5 that rear end only stays sub-fraction to be relatively large in diameter
Predetermined position is used when lower core, and 1 molding sand of shell mould enters 3 hole of chill when moulding and core print 4 is fitted close and completes last positioning.
Claims (1)
1. a kind of core head structure for being not easy to be mixed into residual sand and positioning stablity, it is characterized in that: the core print outer diameter of runner core is less than chill
Aperture, gap reach 5mm, and when the positioning head that rear end only stays sub-fraction to be relatively large in diameter makees lower core, predetermined position is used, shell mould when moulding
Molding sand enters in chill hole to be fitted close with core print, completes last positioning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710558564.0A CN109128019A (en) | 2017-06-16 | 2017-06-16 | A kind of core head structure for being not easy to be mixed into residual sand and positioning stablity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710558564.0A CN109128019A (en) | 2017-06-16 | 2017-06-16 | A kind of core head structure for being not easy to be mixed into residual sand and positioning stablity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109128019A true CN109128019A (en) | 2019-01-04 |
Family
ID=64803589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710558564.0A Pending CN109128019A (en) | 2017-06-16 | 2017-06-16 | A kind of core head structure for being not easy to be mixed into residual sand and positioning stablity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109128019A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113118388A (en) * | 2021-05-21 | 2021-07-16 | 无锡烨隆精密机械股份有限公司 | Hoisting type turbocharger turbine housing sand core structure |
| CN114918378A (en) * | 2022-06-07 | 2022-08-19 | 山东汇金股份有限公司 | Positioning process for core head of sand core |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57193266A (en) * | 1981-05-25 | 1982-11-27 | Toyota Central Res & Dev Lab Inc | Metallic mold for casting |
| CN103894550A (en) * | 2014-02-21 | 2014-07-02 | 杭州元鼎船舶设备有限公司 | Integrated copper alloy propeller hub casting equipment and special method thereof |
| CN104722718A (en) * | 2015-03-13 | 2015-06-24 | 宝鸡石油机械有限责任公司 | Casting method of mud pump air dome shell for bearing pressure |
| CN105382206A (en) * | 2015-12-11 | 2016-03-09 | 南车戚墅堰机车车辆工艺研究所有限公司 | Casting mold and forming method for box body of gearbox |
| CN105798239A (en) * | 2016-03-25 | 2016-07-27 | 湖州中联机械制造有限公司 | Fixing technology for casting oil cylinder modeling clay core |
| CN105945229A (en) * | 2016-07-06 | 2016-09-21 | 安徽莱恩电泵有限公司 | Novel casting steel pump body pouring mold structure |
| CN206824614U (en) * | 2017-06-16 | 2018-01-02 | 科华控股股份有限公司 | A kind of core head structure for being not easy to be mixed into residual sand and positioning stablity |
-
2017
- 2017-06-16 CN CN201710558564.0A patent/CN109128019A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57193266A (en) * | 1981-05-25 | 1982-11-27 | Toyota Central Res & Dev Lab Inc | Metallic mold for casting |
| CN103894550A (en) * | 2014-02-21 | 2014-07-02 | 杭州元鼎船舶设备有限公司 | Integrated copper alloy propeller hub casting equipment and special method thereof |
| CN104722718A (en) * | 2015-03-13 | 2015-06-24 | 宝鸡石油机械有限责任公司 | Casting method of mud pump air dome shell for bearing pressure |
| CN105382206A (en) * | 2015-12-11 | 2016-03-09 | 南车戚墅堰机车车辆工艺研究所有限公司 | Casting mold and forming method for box body of gearbox |
| CN105798239A (en) * | 2016-03-25 | 2016-07-27 | 湖州中联机械制造有限公司 | Fixing technology for casting oil cylinder modeling clay core |
| CN105945229A (en) * | 2016-07-06 | 2016-09-21 | 安徽莱恩电泵有限公司 | Novel casting steel pump body pouring mold structure |
| CN206824614U (en) * | 2017-06-16 | 2018-01-02 | 科华控股股份有限公司 | A kind of core head structure for being not easy to be mixed into residual sand and positioning stablity |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113118388A (en) * | 2021-05-21 | 2021-07-16 | 无锡烨隆精密机械股份有限公司 | Hoisting type turbocharger turbine housing sand core structure |
| CN114918378A (en) * | 2022-06-07 | 2022-08-19 | 山东汇金股份有限公司 | Positioning process for core head of sand core |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190104 |