CN106903265A - Accelerate the mould of molding resin sand air-set - Google Patents
Accelerate the mould of molding resin sand air-set Download PDFInfo
- Publication number
- CN106903265A CN106903265A CN201710084046.XA CN201710084046A CN106903265A CN 106903265 A CN106903265 A CN 106903265A CN 201710084046 A CN201710084046 A CN 201710084046A CN 106903265 A CN106903265 A CN 106903265A
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- CN
- China
- Prior art keywords
- ventilative
- hole
- holes
- mould
- core
- 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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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
- B22C9/12—Treating moulds or cores, e.g. drying, hardening
- B22C9/123—Gas-hardening
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Devices For Molds (AREA)
Abstract
A kind of mould of acceleration molding resin sand air-set,Including body and some porous plugs,The body has the surface for forming core shape or sand mold cavity shape,Some ventilative through holes are opened up on the surface of the body,Some porous plugs fill in some ventilative through holes,Small ventilating holes or ventilative grid are opened up on the end face of porous plug,Instant invention overcomes mould inside molding sand in the prior art,Core sand setting rate is slower in outside resin sand setting rate than naked leakage,Type is caused,Play core time problem long,Propose a kind of mould of acceleration resin sand air-set speed,The mould by with sand mold,The mode of porous plug is set on the corresponding face of core working face,Realizing mould inside resin sand can contact with the external world,Accelerate the purpose of moisture loss,Shorten resin sand firm time,Not only increase operating efficiency,Also reduce because of core caused by under-ageing,Sand mold scrappage and repair rate.
Description
Technical field
The present invention relates to sand casting technical field, more particularly to a kind of mould of acceleration molding resin sand air-set.
Background technology
In resin sand casting technique, mixed into curing agent, resin by the resin sand for forming sand mold and sand mold, can
The resin sand that will be blended in use time insert in core box or sandbox apperance in, consolidation is hardened by the polymerisation of resin,
After after resin sand hardening, type, a core are played in elastic-plastic phase, complete the coremaking and moulding of resin sand.
Referring to Fig. 1, after resin sand coremaking, moulding, carry out moisture, the reaction water of resin polymerization reaction generation of auto-hardener,
In the open back-up sand face in air, moisture is easy to go in air, hardens quickly；And be located in the middle part of casting mold and by apperance
40th, the resin sand that template, core box are surrounded, resin being contacted because of the working face of core box and with the working face of apperance 40 or being close to
Because that can not be contacted with the air external world, water can not be run out of sand, and setting rate is slow so that play core, a type time and significantly extend, rise
The part of the outer surface of the core for going out and the inner surface of sand mold die cavity often has the situation that resin sand feels like jelly, comes off, deforming,
Resin sand can not quick, abundant drying and moulding, cause the local sand loss of strength for being close to mould very big, but near the type of mould
Sand directly to be contacted with high temperature liquid iron, it is necessary to highest intensity and quality, this is resulted in using these cores and sand casting shape
Into casting surface size error it is big, or cause the problem of cast-internal burning into sand, or even the serious core that causes is scrapped.
In order to solve these problems, can only be made up by repairing the surface of core and sand mold at present, this not only adds
The patch work amount of core, has elongated the production cycle, can't ensure the bulk strength of core or sand mold.
The content of the invention
It is necessary to propose a kind of mould of the dry acceleration molding resin sand air-set of acceleration resin sand.
A kind of mould of acceleration molding resin sand air-set, including body and some porous plugs, the body have shape
Into core shape or the surface of sand mold cavity shape, some ventilative through holes are opened up on the surface of the body, it is described ventilative logical
Through body to form the venting channels being in communication with the outside, some porous plugs fill in some ventilative through holes in hole, will be ventilative
Through hole is blocked, and the porous plug has the outer wall matched with the inwall of ventilative through hole, so that porous plug crosses win with ventilative through hole
Coordinate, small ventilating holes or ventilative grid are opened up on the end face of porous plug, the small ventilating holes or ventilative grid are ventilative with described
Channel connection.
Preferably, the end face of the porous plug with the surface of the body for opening up ventilative through hole in identical plane so that
The core shape or sand mold shape of formation have smooth outer surface.
Preferably, the body is core box, and the core box has the inner surface for forming core shape, in the inner surface of core box
On open up some ventilative through holes, the ventilative through hole is through core box forming the venting channels being in communication with the outside, some porous plugs
Fill in some ventilative through holes, by the closure of ventilative through hole, the porous plug has and matches with the inwall of ventilative through hole
Outer wall, so as to porous plug crosses win with ventilative through hole coordinate, opens up small ventilating holes or ventilative grid on the end face of porous plug, described
Small ventilating holes or ventilative grid are connected with the gas-permeable channels.
Preferably, the body is apperance, and the apperance has the outer surface for forming sand mold cavity shape, in the outer of apperance
Some ventilative through holes are opened up on surface, the ventilative through hole passes through apperance to form the venting channels being in communication with the outside, if parching
Vent plug fills in some ventilative through holes, and by the closure of ventilative through hole, the porous plug has the inwall phase with ventilative through hole
The outer wall matched somebody with somebody, so as to porous plug crosses win with ventilative through hole coordinate, opens up small ventilating holes or ventilative grid on the end face of porous plug,
The small ventilating holes or ventilative grid are connected with the gas-permeable channels.
It is harder in outside resin sand than naked leakage instant invention overcomes mould inside molding sand in the prior art, core sand setting rate
Change the problem that speed is slow, has caused type, a core time long, it is proposed that a kind of mould of acceleration resin sand air-set speed, should
By way of setting porous plug on face corresponding with sand mold, core working face, realizing mould inside resin sand can for mould
Contacted with the external world, accelerate the purpose of moisture loss, shorten resin sand firm time, not only increase operating efficiency, also dropped
It is low because of core, sand mold scrappage and repair rate caused by under-ageing.
For core box, face corresponding with the working face of core is the inner surface of core box, that is, core box work
Face is inner surface, and for correspondence apperance, face corresponding with sand mold working face is the outer surface of apperance, that is, apperance work
Face is outer surface.
Brief description of the drawings
Fig. 1 is the structural representation of the apperance of core box in the prior art.
Fig. 2 is the structural representation of the mould of the acceleration molding resin sand air-set.
Fig. 3 is to remove the structural representation of the porous plug in Fig. 2.
Fig. 4 is the structural representation of the porous plug.
Fig. 5 is the structural representation of the another embodiment of the porous plug.
Fig. 6 is the structural representation of the core box in the present invention.
Fig. 7 is the structural representation of the apperance in the present invention.
In figure：Body 10, ventilative through hole 11, porous plug 20, small ventilating holes 21, ventilative grid 22, core box 30, inner surface
31st, apperance 40, outer surface 41.
Specific embodiment
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be attached to what is used needed for embodiment
Figure is briefly described, it should be apparent that, drawings in the following description are some embodiments of the present invention, common for this area
For technical staff, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Referring to Fig. 2 to Fig. 5, a kind of mould of acceleration molding resin sand air-set is the embodiment of the invention provides, including
Body 10 and some porous plugs 20, body 10 have the surface for forming core shape or sand mold cavity shape, in the table of body 10
Some ventilative through holes 11 are opened up on face, the venting channels that ventilative through hole 11 is in communication with the outside through body 10 with formation, if parching
Vent plug 20 fills in some ventilative through holes 11, and ventilative through hole 11 is blocked, and porous plug 20 has the inwall phase with ventilative through hole 11
The outer wall of matching, so as to porous plug 20 is crossed to win with ventilative through hole 11 coordinate, opens up small ventilating holes 21 on the end face of porous plug 20
Or ventilative grid 22, small ventilating holes 21 or ventilative grid 22 are connected with gas-permeable channels.
Outside air is constantly entered in the resin sand for forming core or sand mold by the porous plug 20, accelerates resin solidification
Agent polycondensation polymerisation, resin sand is constantly advanced centered on each porous plug 20 to around porous plug 20 and inside resin sand
Hardening, so as to shorten the firm time of mould inside resin sand, and significantly improves the intensity of resin sand.
Mould of the present invention, can cause that the molding firm time of the core sand in mould, molding sand shortens 20%-30%,
And the waste product caused by core, sand mold points hardness deficiency or deformation can be reduced within 1%.
Further, the end face of porous plug 20 with the surface of the body 10 for opening up ventilative through hole 11 in identical plane, with
Make the core shape to be formed or sand mold shape that there is smooth outer surface 41.
Referring to Fig. 6, body 10 is core box 30, and core box 30 has the inner surface 31 for forming core shape, in core box 30
Some ventilative through holes 11 are opened up on surface 31, the venting channels that ventilative through hole 11 is in communication with the outside through core box 30 with formation, if
Parch vent plug 20 and fill in some ventilative through holes 11, ventilative through hole 11 is blocked, porous plug 20 have with ventilative through hole 11 in
The outer wall that wall matches, so as to porous plug 20 is crossed to win with ventilative through hole 11 coordinate, opens up ventilative small on the end face of porous plug 20
Hole 21 or ventilative grid 22, small ventilating holes 21 or ventilative grid 22 are connected with gas-permeable channels.
During coremaking, first produce with core cavity shape identical core box 30, the core box 30 can be metal
Core box 30, or wooden core box 30, then produces core using core box 30, and the inner surface 31 of core box 30 forms core
Outer surface, and the outer surface of core be in casting cycle formed core cavity surface texture, the outer surface of usual core
It is required that having highest hardness and intensity, so the surface texture in order to ensure core cavity, the outer surface of core requires have
Smooth, smooth, flawless surface, so during coremaking, the core to be formed is close to the inner surface 31 of core box 30
Outer surface want rapid shaping, rapid draing, with ensured during core core outer surface come off without scab, without feeling like jelly, without deformation, so
Some ventilative through holes 11 are being opened up on the inner surface 31 of core box 30, porous plug 20 is being filled in ventilative through hole 11.
Referring to Fig. 7, body 10 is apperance 40, and apperance 40 has the outer surface 41 for forming sand mold cavity shape, in apperance 40
Outer surface 41 on open up some ventilative through holes 11, ventilative through hole 11 is led to through apperance 40 with forming the ventilation being in communication with the outside
Road, some porous plugs 20 fill in some ventilative through holes 11, and ventilative through hole 11 is blocked, and porous plug 20 has and ventilative through hole 11
The outer wall that matches of inwall, so as to porous plug 20 and ventilative through hole 11 are crossed to win coordinate, opened up on the end face of porous plug 20
Gas aperture 21 or ventilative grid 22, small ventilating holes 21 or ventilative grid 22 are connected with gas-permeable channels.
For example during apperance 40 is designed and produced, be spaced 50-150mm on the working face of apperance 40, bore Φ 20mm~
Φ 30mm through holes form ventilative through hole 11, from than resin sand grit size be the small small ventilating holes 21 of 40-70 mesh or
The porous plug of ventilative grid 22, the external diameter of the porous plug is Φ 20mm~Φ 30mm, and the grit size is the tree of 40-70 mesh
Fat sand sand grains will not get out air-vent or ventilative grid, and the water that resin curing agent polycondensation polymerisation is generated, can be by saturating
Air-vent or ventilative grid on vent plug are lost in air, so as to accelerate the hardening of resin sand.
In sand mold moulding, apperance 40 is previously fabricated out according to the shape of casting, and apperance 40 is used to form sand mold
The shape of die cavity, that is, the outer surface of cast shape is formed, so the quality of the cast shape formed after the completion of casting depends on
In the quality of the shape of sand mold die cavity, the inner surface requirement of usual sand mold die cavity has highest hardness and intensity, when sand mold type
The shape in chamber is identical with the outer surface 41 of apperance 40, can just cast out and the identical casting of cast shape, and moulding
When, the inner surface of sand mold die cavity is to be close to what is formed with the outer surface 41 of apperance 40, so in order to avoid the interior table of sand mold die cavity
Face because setting rate it is slow caused by scab, the problem that comes off, deform, opened up some ventilative on the outer surface 41 of apperance 40
Through hole 11, porous plug 20 is filled in ventilative through hole 11.
Implementing mode of operation of the invention is：
Selection Φ 20mm~Φ 30mm porous plugs 20；
When mold design makes, when such as core box 30 and apperance 40 make, the distance of 50-150mm is spaced on the working face of mould,
The through hole of Φ 20mm~Φ 30mm is bored, ventilative through hole 11 is formed；
Interference fit porous plug 20 is installed in the ventilative through hole 11 of die-face；
The mould for being provided with porous plug is put into production carries out the work such as coremaking, moulding.
Module or unit in embodiment of the present invention device can according to actual needs be merged, divide and deleted.
Above disclosed is only present pre-ferred embodiments, can not limit the right model of the present invention with this certainly
Enclose, one of ordinary skill in the art will appreciate that all or part of flow of above-described embodiment is realized, and will according to right of the present invention
Made equivalent variations are sought, the covered scope of invention is still fallen within.
Claims (4)
1. it is a kind of accelerate molding resin sand air-set mould, it is characterised in that：Including body and some porous plugs, described
Body has the surface for forming core shape or sand mold cavity shape, and some ventilative through holes, institute are opened up on the surface of the body
Ventilative through hole is stated through body to form the venting channels being in communication with the outside, some porous plugs fill in some ventilative through holes,
Blocked with by ventilative through hole, the porous plug has the outer wall that matches with the inwall of ventilative through hole so that porous plug with it is ventilative
Through hole is crossed win and is coordinated, and opens up small ventilating holes or ventilative grid on the end face of porous plug, the small ventilating holes or ventilative grid with
The gas-permeable channels connection.
2. the mould of molding resin sand air-set is accelerated as claimed in claim 1, it is characterised in that：The end of the porous plug
The surface of face and the body for opening up ventilative through hole in identical plane so that the core shape for being formed or sand mold shape have it is flat
Whole outer surface.
3. the mould of molding resin sand air-set is accelerated as claimed in claim 1, it is characterised in that：The body is core
Box, the core box has the inner surface for forming core shape, and some ventilative through holes are opened up on the inner surface of core box, described ventilative
Through core box to form the venting channels being in communication with the outside, some porous plugs fill in some ventilative through holes to through hole, will be saturating
Vent hole is blocked, and the porous plug has the outer wall matched with the inwall of ventilative through hole, so that porous plug and ventilative through hole mistake
Win and coordinate, open up small ventilating holes or ventilative grid on the end face of porous plug, the small ventilating holes or ventilative grid with it is described
Gas channel connection.
4. the mould of molding resin sand air-set is accelerated as claimed in claim 1, it is characterised in that：The body is mould
Sample, the apperance has the outer surface for forming sand mold cavity shape, and some ventilative through holes are opened up on the outer surface of apperance, described
Through apperance to form the venting channels being in communication with the outside, some porous plugs fill in some ventilative through holes to ventilative through hole, with
The closure of ventilative through hole, the porous plug had into the outer wall matched with the inwall of ventilative through hole, so that porous plug is logical with ventilative
Hole is crossed win and is coordinated, and small ventilating holes or ventilative grid, the small ventilating holes or ventilative grid and institute are opened up on the end face of porous plug
State gas-permeable channels connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710084046.XA CN106903265A (en) | 2017-02-16 | 2017-02-16 | Accelerate the mould of molding resin sand air-set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710084046.XA CN106903265A (en) | 2017-02-16 | 2017-02-16 | Accelerate the mould of molding resin sand air-set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106903265A true CN106903265A (en) | 2017-06-30 |
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ID=59208335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710084046.XA Pending CN106903265A (en) | 2017-02-16 | 2017-02-16 | Accelerate the mould of molding resin sand air-set |
Country Status (1)
| Country | Link |
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| CN (1) | CN106903265A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016163892A (en) * | 2015-03-06 | 2016-09-08 | リグナイト株式会社 | Method for manufacturing mold |
| CN108097886A (en) * | 2018-02-01 | 2018-06-01 | 成都桐林铸造实业有限公司 | Fill type resin sand mold and main core sand core |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5223051A (en) * | 1992-02-19 | 1993-06-29 | General Motors Corporation | Method of producing cast-to-size tools |
| CN102259165A (en) * | 2011-07-11 | 2011-11-30 | 潍坊凯力石油化工机械有限公司 | Vacuum sealing core making method |
| CN203610603U (en) * | 2013-11-04 | 2014-05-28 | 重庆新红旗缸盖制造有限公司 | Exhaust device of mandrel of cylinder cover gate core sand |
| CN204075072U (en) * | 2014-09-30 | 2015-01-07 | 成都市翻鑫家科技有限公司 | A kind of improvement valve body casting mould |
| CN204603220U (en) * | 2015-05-18 | 2015-09-02 | 贵州安吉航空精密铸造有限责任公司 | Combined type ventilation shell core |
| CN205629292U (en) * | 2016-05-21 | 2016-10-12 | 沈阳明腾科技有限公司 | Quick -hardening device of molding of resin sand or coremaking |
-
2017
- 2017-02-16 CN CN201710084046.XA patent/CN106903265A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5223051A (en) * | 1992-02-19 | 1993-06-29 | General Motors Corporation | Method of producing cast-to-size tools |
| CN102259165A (en) * | 2011-07-11 | 2011-11-30 | 潍坊凯力石油化工机械有限公司 | Vacuum sealing core making method |
| CN203610603U (en) * | 2013-11-04 | 2014-05-28 | 重庆新红旗缸盖制造有限公司 | Exhaust device of mandrel of cylinder cover gate core sand |
| CN204075072U (en) * | 2014-09-30 | 2015-01-07 | 成都市翻鑫家科技有限公司 | A kind of improvement valve body casting mould |
| CN204603220U (en) * | 2015-05-18 | 2015-09-02 | 贵州安吉航空精密铸造有限责任公司 | Combined type ventilation shell core |
| CN205629292U (en) * | 2016-05-21 | 2016-10-12 | 沈阳明腾科技有限公司 | Quick -hardening device of molding of resin sand or coremaking |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016163892A (en) * | 2015-03-06 | 2016-09-08 | リグナイト株式会社 | Method for manufacturing mold |
| CN108097886A (en) * | 2018-02-01 | 2018-06-01 | 成都桐林铸造实业有限公司 | Fill type resin sand mold and main core sand core |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20170630 |