CN108326240A - A kind of balance sand core exhaust structure of hollow clump weight casting - Google Patents
A kind of balance sand core exhaust structure of hollow clump weight casting Download PDFInfo
- Publication number
- CN108326240A CN108326240A CN201810317668.7A CN201810317668A CN108326240A CN 108326240 A CN108326240 A CN 108326240A CN 201810317668 A CN201810317668 A CN 201810317668A CN 108326240 A CN108326240 A CN 108326240A
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- CN
- China
- Prior art keywords
- sand core
- exhaust
- core
- sand
- arbor
- 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
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- 238000005266 casting Methods 0.000 title claims abstract description 52
- 239000004677 Nylon Substances 0.000 claims abstract description 13
- 229920001778 nylon Polymers 0.000 claims abstract description 13
- 230000007704 transition Effects 0.000 claims abstract description 4
- 238000009826 distribution Methods 0.000 claims abstract description 3
- 239000004576 sand Substances 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 239000004033 plastic Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000003292 glue Substances 0.000 claims 1
- 238000004026 adhesive bonding Methods 0.000 abstract description 4
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 6
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 238000000465 moulding Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 244000035744 Hura crepitans Species 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention discloses a kind of balance sand core exhaust structures of hollow clump weight casting,It is formed by two hemihedrism sand core gluings,Including two annular sand cores,The straight core print of cylinder,Rectangular positioning core print and gas outlet,It further includes arbor,Nylon exhaust rope,It is vented item and multiple gas vents,Described two annular sand cores are symmetrical,And it is respectively used for forming the cavity of two clump weight casting,Two annular sand cores are connected as one by the straight core print of cylinder and rectangular positioning core print,And as transition connection and location structure,The gas outlet is arranged at rectangular positioning core print center,And it is connected with the exhaust passage of sand core both sides,The arbor is embedded in balance sand core,And nylon exhaust rope is applied on arbor,The exhaust item is embedded in balance sand core,And together with arbor horizontal connection,The multiple gas vent is along annular sand core vertical distribution.
Description
Technical field
The invention belongs to casting technology fields, and in particular to a kind of balance sand core exhaust structure of hollow clump weight casting.
Background technology
Clump weight is the important spare part in excavating machinery engine, it plays damping balanced action to engine, has sky
The design feature of the heart, uniform wall thickness, and the cavity of casting is larger, only there are one small cylindrical outlets, so if sand core slightly
Offset or sand core exhaust are not smooth, will result in casting section thickness deviation, and casting generates stomata, casting is made to scrap, therefore, sand
The accurate positionin and exhaust of core are unimpeded, are the key that casting techniques.
Traditional process program is one sand core of a casting, and since the cavity sand core of casting is larger, weight is larger, sand core
Unilateral positioning states are in inside cavity, the sand core for forming casting cavity part is in cantilever position, in order in lower core process
In can fix sand core, it is necessary that core print has enough length and weight that could match with the sand core for forming casting cavity part
Weight, can be only achieved weight balancing, and otherwise sand core can not be fixed, and so increases the manufacturing cost of sand core, also increases
The area occupied of single part casting mold can arrange two casting in one pair of sandbox originally, but since core print occupies casting mold face
It accumulates and can only arrange a casting, greatly reduce productivity；Simultaneously as sand core is in unilateral positioning states, make sand core
It cannot position well and cause rate of wasted casting product excessively high, increase the production cost of casting.Furthermore the casting of clump weight casting
Furan resin-sand molding and core making is generally used, if the exhaust of cavity sand core is not smooth, furane resins sand core generates a large amount of when cast
Gas be difficult to be discharged, casting be easy for generate gas hole defect, cause casting to be scrapped.
Invention content
A kind of balance sand core of hollow clump weight casting is provided the invention aims to overcome the deficiencies in the prior art
Exhaust structure.
In order to achieve the above objectives, the technical solution adopted in the present invention is：It is formed by two hemihedrism sand core gluings, including two
A annular sand core, the straight core print of cylinder, rectangular positioning core print and gas outlet, it further includes arbor, nylon exhaust rope, is vented item and more
A gas vent, it is characterised in that：Described two annular sand cores are symmetrical, and are respectively used for forming the sky of two clump weight casting
Two annular sand cores are connected as one by chamber, the straight core print of cylinder and rectangular positioning core print, and are connected and positioned as transition
Structure, the gas outlet is arranged at rectangular positioning core print center, and is connected with the exhaust passage of sand core internal both sides, the arbor
It is embedded in balance sand core, and nylon exhaust rope is applied on arbor, the exhaust item is embedded in balance sand core, and and core
Together, the multiple gas vent is along annular sand core vertical distribution for bone horizontal connection.
Preferably, the shape of the arbor and material are both sides semicircle round steel, intermediate to pass through the axial activity of straight round steel
Connection.
Preferably, the exhaust strip adoption foamed plastics is vented item, is vaporized after cast and forms exhaust passage.
Preferably, the multiple gas vent is arranged is vented the upper of item in sand core both sides semicircle round steel arbor and foamed plastics
Side or lower section.
Preferably, the gas outlet is total exhaust passage mouth, and sand core both sides are vented the exhaust duct that item is formed and are arranged with nylon
The exhaust duct and multiple gas vents that gas rope is formed all are connected to gas outlet.
Compared with prior art, the beneficial effects of the invention are as follows：
Structure of the invention is relatively simple, easy to make, and sand core strength is high, and the exhaust passage of cavity sand core is unimpeded, effectively prevent casting
Part generates gas hole defect, and lower core accurate positioning, sand core can autobalance, effectively prevent casting to generate wall thickness deviation defect,
Core print length is shortened simultaneously, two casting can be arranged in a sandbox, improve productivity.
Description of the drawings
Attached drawing 1 is the balance sand core exhaust structure sectional view of the hollow clump weight casting of the present invention；
Attached drawing 2 is the overhead sectional view of Fig. 1.
Wherein, 1-sand core；11-upper half sand cores；12-lower half sand cores；13-annular sand cores；14-cylinder core prints；15—
Rectangular positioning core print；2-casting molds；21-mo(u)ld top halves；22-mo(u)ld bottom halves；3-cavitys；4-arbors；41-semicircle round steel；42—
Straight round steel；5-nylon exhaust rope；6-exhaust items；7-gas vents；8-gas outlets；9-ventholes；10-divide core face.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment belongs to protection scope of the present invention.
Referring to Fig.1, Fig. 2, a kind of balance sand core exhaust structure of hollow clump weight casting provided in an embodiment of the present invention, by
Upper half sand core 11 and 12 symmetrical gluing of lower half sand core form, including two annular sand cores 13, the straight core print 14 of cylinder, rectangular locating cores
First 15 and gas outlet 8, it further includes arbor 4, nylon exhaust rope 5, exhaust item 6 and multiple gas vents 7.
In the embodiment of the present invention, hollow clump weight casting molding and core making technique, a mould two pieces, using furane resins sand molding
Coremaking, casting mold 2 include mo(u)ld top half 21 and mo(u)ld bottom half 22, casting mold 2 be internally provided with a whole disjunctor cavity sand core 1 and one always goes out
Gas port 8 is set in mo(u)ld top half 21 there are one the venthole being connected to total gas outlet 8, and sand core 1 forms cavity 3 and casting with upper casting mold and lower casting mold
Wall thickness.
As shown in Figure 1 and Figure 2, two annular sand cores 13 are symmetrical, and are respectively used for forming the sky of two clump weight casting
Two annular sand cores 13 are connected as one by chamber 3, the straight core print 14 of cylinder and rectangular positioning core print 15, and are connected and determined as transition
Bit architecture, it is ensured that 1 accurate positioning of sand core and sand core 1 balance, and prevent casting section thickness deviation from causing waste product.
According to the smaller feature in the hollow outlet of the global shape structure and casting of sand core 1, the shape of arbor 4 and material are set
It is calculated as both sides semicircle round steel 41, it is intermediate to be flexibly connected by the way that straight round steel 42 is axial.1 intensity of sand core is improved in this way, is poured into a mould
It is convenient for taking out arbor 4 from casting cavity 3 afterwards, to reuse.
According to the design feature of casting annular sand core 13, in dividing on core face 10 through special annular socket mould for sand core 1
Tool makes annular groove and 12 vertical φ 8mm gas vents 7.
Nylon exhaust rope 5 is applied on arbor 4, and is embedded in together in annular groove and resin sand core 1 with arbor 4, is poured
Exhaust passage is formed after note.
Foamed plastics exhaust item 6 is embedded in annular groove and is connected with 41 arbor level of semicircle round steel, shape after cast
At exhaust passage.
Gas outlet 8 is arranged at rectangular 15 center of positioning core print, and is connected with the exhaust passage of 1 both sides of sand core, i.e. sand core 1
The gas that cast generates is formed by the exhaust passage that nylon exhaust rope 5 is formed on multiple vertical gas vents 7 and arbor 4, exhaust item 6
Exhaust passage be discharged by total gas outlet 8, then be discharged to outside cavity by the venthole 9 of casting mold mo(u)ld top half 21, effectively protected
Demonstrate,proved sand core 1 be vented it is unimpeded, prevent casting generate stomata.
The production method of the balance sand core exhaust structure includes the following steps：
（1）Make resin sand core mould, annular socket mold and arbor 4；
（2）Upper half sand core 11 and lower half sand core 12 are made, core mould is horizontally arranged, the tamping of filling furan resin-sand and edge point
Core face 10 strikes off；
（3）On 1 both sides annular sand core of sand core, 13 surface annular groove and 12 gas vents are extruded using annular socket mold；
（4）The arbor 4 that will pass through nylon exhaust rope 5 is put into annular groove；
（5）Foamed plastics exhaust item 6 is put into annular groove, and is connected with 41 arbor level of semicircle round steel；
（6）Arbor 4 and annular groove are filled and led up with resin sand；
（7）The making of half sand core is completed in molding, finishing after hardening, upper alcohol-base paint, baking；
（8）Divide on core face 10 in lower half sand core 12 and play binder, 11 pairing gluing of upper half sand core is pressed together, completes whole
The making of sand core 1.
Claims (5)
1. a kind of balance sand core exhaust structure of hollow clump weight casting, by upper half sand core（11）With lower half sand core（12）Symmetrical glue
It closes, including two annular sand cores（13）, the straight core print of cylinder（14）, rectangular positioning core print（15）And gas outlet（8）, it is also wrapped
Include arbor（4）, nylon exhaust rope（5）, exhaust item（6）And multiple gas vents（7）, it is characterised in that：Described two annular sand cores
（13）It is symmetrical, and it is respectively used for forming the cavity of two clump weight casting, the straight core print of cylinder（14）And rectangular positioning
Core print（15）By two annular sand cores（13）It is connected as one, and as transition connection and location structure, the gas outlet（8）If
It sets in rectangular positioning core print（15）Center, and and sand core（1）The exhaust passage of both sides is connected, the arbor（4）It is embedded in balance
Sand core（1）In, and nylon is vented and is restricted（5）It is applied in arbor（4）On, the exhaust item（6）It is embedded in sand core（1）In, and with
Arbor（4）Horizontal connection together, the multiple gas vent（7）Along annular sand core（13）Vertical distribution.
2. according to a kind of balance sand core exhaust structure of hollow clump weight casting described in claim 1, it is characterised in that：Institute
State arbor（4）Shape and material be both sides semicircle round steel（41）, centre passes through straight round steel（42）Axial flexible connection.
3. according to a kind of balance sand core exhaust structure of hollow clump weight casting described in claim 1, it is characterised in that：Institute
State exhaust item（6）Item is vented using foamed plastics（6）, vaporized after cast and form exhaust passage.
4. a kind of balance sand core exhaust structure of hollow clump weight casting according to claim 1,2, it is characterised in that：
The multiple gas vent（7）It is arranged in sand core both sides semicircle round steel（41）Arbor and foamed plastics are vented item（6）Top or
Lower section.
5. according to a kind of balance sand core exhaust structure of hollow clump weight casting described in claim 1, it is characterised in that：Institute
State gas outlet（8）For total exhaust passage mouth, sand core both sides are vented item（6）The exhaust duct of formation is restricted with nylon exhaust（5）It is formed
Exhaust duct and multiple gas vents（7）All with gas outlet（8）Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810317668.7A CN108326240A (en) | 2018-04-10 | 2018-04-10 | A kind of balance sand core exhaust structure of hollow clump weight casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810317668.7A CN108326240A (en) | 2018-04-10 | 2018-04-10 | A kind of balance sand core exhaust structure of hollow clump weight casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108326240A true CN108326240A (en) | 2018-07-27 |
Family
ID=62933009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810317668.7A Pending CN108326240A (en) | 2018-04-10 | 2018-04-10 | A kind of balance sand core exhaust structure of hollow clump weight casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108326240A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110899627A (en) * | 2019-12-11 | 2020-03-24 | 黄波 | Exhaust structure of engine cylinder body oil duct core |
| CN118253707A (en) * | 2024-05-31 | 2024-06-28 | 阜新力达钢铁铸造有限公司 | Hidden core bar of machine tool casting |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1112253B (en) * | 1959-12-07 | 1961-08-03 | Atlas Werke Ag | Insert for foundry cores |
| FR2319445A1 (en) * | 1975-08-01 | 1977-02-25 | Codari Dubru | Round metal item casting process - uses cylindrical metal casing into which top and bottom cores are fitted |
| FR2662218A1 (en) * | 1989-12-28 | 1991-11-22 | Rapid Sa | Double stud for joining any elements whatsoever together so that they touch |
| JPH11333545A (en) * | 1998-05-22 | 1999-12-07 | Rippoo Chuzo Kk | Manufacture of casting, and core used therefor |
| DE202009011233U1 (en) * | 2009-08-18 | 2009-12-31 | Karl Schmidt Fabrik für Gießereibedarf GmbH & Co. | Sheet metal clasp with cut or eccentrically arranged web |
| CN201455187U (en) * | 2009-06-03 | 2010-05-12 | 郧西精诚汽配有限公司 | Sand core structure of double-airway exhaust pipe casting |
| CN101745603A (en) * | 2009-12-28 | 2010-06-23 | 临沂蒙凌铸钢有限公司 | Core making technology of Furan resin sand casting steel car axle casing |
| CN206509476U (en) * | 2017-01-16 | 2017-09-22 | 共享装备股份有限公司 | A kind of arbor air-out apparatus for preventing skew from deforming |
| CN208483182U (en) * | 2018-04-10 | 2019-02-12 | 溧阳市联华机械制造有限公司 | A kind of balance sand core exhaust structure of hollow clump weight casting |
-
2018
- 2018-04-10 CN CN201810317668.7A patent/CN108326240A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1112253B (en) * | 1959-12-07 | 1961-08-03 | Atlas Werke Ag | Insert for foundry cores |
| FR2319445A1 (en) * | 1975-08-01 | 1977-02-25 | Codari Dubru | Round metal item casting process - uses cylindrical metal casing into which top and bottom cores are fitted |
| FR2662218A1 (en) * | 1989-12-28 | 1991-11-22 | Rapid Sa | Double stud for joining any elements whatsoever together so that they touch |
| JPH11333545A (en) * | 1998-05-22 | 1999-12-07 | Rippoo Chuzo Kk | Manufacture of casting, and core used therefor |
| CN201455187U (en) * | 2009-06-03 | 2010-05-12 | 郧西精诚汽配有限公司 | Sand core structure of double-airway exhaust pipe casting |
| DE202009011233U1 (en) * | 2009-08-18 | 2009-12-31 | Karl Schmidt Fabrik für Gießereibedarf GmbH & Co. | Sheet metal clasp with cut or eccentrically arranged web |
| CN101745603A (en) * | 2009-12-28 | 2010-06-23 | 临沂蒙凌铸钢有限公司 | Core making technology of Furan resin sand casting steel car axle casing |
| CN206509476U (en) * | 2017-01-16 | 2017-09-22 | 共享装备股份有限公司 | A kind of arbor air-out apparatus for preventing skew from deforming |
| CN208483182U (en) * | 2018-04-10 | 2019-02-12 | 溧阳市联华机械制造有限公司 | A kind of balance sand core exhaust structure of hollow clump weight casting |
Non-Patent Citations (1)
| Title |
|---|
| 国家机械工业委员会, 北京理工大学出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110899627A (en) * | 2019-12-11 | 2020-03-24 | 黄波 | Exhaust structure of engine cylinder body oil duct core |
| CN110899627B (en) * | 2019-12-11 | 2021-05-07 | 黄波 | Exhaust structure of engine cylinder body oil duct core |
| CN118253707A (en) * | 2024-05-31 | 2024-06-28 | 阜新力达钢铁铸造有限公司 | Hidden core bar of machine tool casting |
| CN118253707B (en) * | 2024-05-31 | 2024-09-27 | 阜新力达钢铁铸造有限公司 | Hidden core bar of machine tool casting |
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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: 20180727 |