CN104117630A - Main oil gallery sand core mold of large engine body and core manufacturing method - Google Patents
Main oil gallery sand core mold of large engine body and core manufacturing method Download PDFInfo
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- CN104117630A CN104117630A CN201410307335.8A CN201410307335A CN104117630A CN 104117630 A CN104117630 A CN 104117630A CN 201410307335 A CN201410307335 A CN 201410307335A CN 104117630 A CN104117630 A CN 104117630A
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Abstract
The invention discloses a main oil gallery sand core mold of a large engine body. The main oil gallery sand core mold of the large engine body comprises an upper core box, a lower core box, an iron core, a funnel and locking devices, wherein the upper core box is provided with an upper semicircular groove, and the lower core box is provided with a lower semicircular groove, and the upper core box and the lower core box are buckled to form a main oil gallery sand core mold cavity which forms a main oil gallery sand core box cavity; the locking devices are respectively positioned on the upper core box and the lower core box so as to lock the upper core box and the lower core box; the iron core is positioned in the main oil gallery sand core box cavity; the funnel is detachably fixed on one end of the main oil gallery sand core mold cavity. The upper core box and the lower core box are buckled to form the main oil gallery sand core cylindrical cavity, and the manufactured sand core is smooth, is high in intensity, and is good in using performance.
Description
Technical field
The present invention relates to large-scale body casting field, especially relate to a kind of large-scale body main oil gallery core mold and core-making method.
Background technology
Medium and small-scale diesel engine body main oil gallery adopts processing method maybe the seamless steel pipe that fills up precoated sand to be cast in main oil gallery.
The main oil gallery of 12V260 body requires to form with core, and the length of main oil gallery is 4.8 meters, and the structure of main oil gallery core mold and the selection of core-making method are most important.The core that is less than 3 meters for main oil gallery length, the core-making method of employing is resin sand, and method for designing is that bottom is one-piece core box, and top is slide block, and shortcoming is that sand core strength is low, is difficult for tamping, the degree of packing is poor, core easy fracture.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the shortcoming of prior art, and a kind of large-scale body main oil gallery core mold and core-making method are provided, and its core of making is bright and clean, and intensity is high, and serviceability is good.
In order to solve above technical problem, the invention provides a kind of large-scale body main oil gallery core mold, comprise core box, lower core box, core iron, funnel and locking device; Described upper core box has first circular trough, lower core box has lower semi-circular groove, and upper core box and lower core box are interlocked and form main oil gallery core die cavity, and main oil gallery core die cavity forms main oil gallery core core box cavity, described locking device lays respectively on core box and lower core box, by upper core box and the locking of lower core box; Described core iron is positioned at main oil gallery core core box cavity, the dismountable one end of being fixed on main oil gallery core die cavity of funnel.
Being further defined to of technical solution of the present invention, described upper core box is first hollow cylinder cavity, border at described first hollow cylinder cavity is upwards extended with Jia Qiang Zhu vertically, described lower core box is second hollow cylinder cavity, is extended with vertically Jia Qiang Zhu downwards in the border of described second hollow cylinder cavity.
Being further defined to of technical solution of the present invention, adds on strong Zhu and is cast with circular hole in described both sides.
Being further defined to of technical solution of the present invention, also comprise core ejection mechanism, described core ejection mechanism comprises top board, push rod, bolt, nut and push rod, the end of bolt is fixing can be along bolt shaft to push rod in relative rotation, described top board is fixed on bolt, described bolt can move up and down along the nut being fixed on upper core box and lower core box, and one end of described push rod is fixed on top board, and the other end of push rod peaks on film covered sand core fuse through the inwall of main oil gallery core die cavity respectively.
Being further defined to of technical solution of the present invention, also comprise core iron positioner, described core iron positioner comprises positioning table and alignment pin, described positioning table is positioned at a side of main oil gallery core die cavity, alignment pin is fixed on funnel, and alignment pin can be fixed in the endoporus of core iron, on alignment pin, have groove and be connected with the endoporus of core iron.
Being further defined to of technical solution of the present invention is drilled with many exhausting holes on described core iron.
Being further defined to of technical solution of the present invention, described through hole for radially equally distributed many rounds footpath be Ф 10 ~ 20MM, axial spacing is the uniform hole of 200 ~ 400MM.
Being further defined to of technical solution of the present invention, is wound with in the periphery of core iron the rope of giving vent to anger, described in give vent to anger rope one end be fixed on through hole, the other end grows core iron.
Based on foregoing invention object, the present invention also proposes a kind of large-scale body main oil gallery core mold core-making method, upper core box and lower core box are interlocked and form main oil gallery core die cavity, core iron is placed in main oil gallery core die cavity, by dismountable funnel one end of being fixed on main oil gallery core die cavity; Use high-strength bolt by lower core box and the locking of lower core box, then core box is erected, fill up precoated sand; After ram-jolt, seal back-up sand mouth, then core box is set level, connect heating tube, make film covered sand core completely curing; Last air cooling, to room temperature, ejects core.
The invention has the beneficial effects as follows: in employing, core box, lower core box are interlocked and form main oil gallery sand-core cylinder shape cavity, and its core of making is bright and clean, and intensity is high, and serviceability is good.
Adopt reinforcement can effectively prevent that core box and lower core box from deforming.
On reinforcement, be cast with circular hole, can effectively prevent heating and cooling time, core box deforms because expanding with heat and contract with cold and causes core box crackle.
Adopt top board, be convenient to compress first hollow cylinder cavity and first circular cavity, adopt in addition the core ejection mechanism of overall top board to be convenient to core steadily to eject.
Core iron positioner can well be located core iron, ensures the concentricity of main oil gallery core and core iron, ensures the sand even thickness that core iron is inside and outside.
On core iron, be drilled with multiple through holes, after boring, make the inside and outside precoated sand of core iron couple together, be convenient to the gas of core to discharge by the rope of giving vent to anger.
Be wound with in the periphery of core iron the rope of giving vent to anger, be convenient to the gas of core to discharge by the rope of giving vent to anger.
Brief description of the drawings
Fig. 1 is schematic top plan view of the present invention;
Fig. 2 is P-P cross-sectional schematic of the present invention;
Fig. 3 is R-R cross-sectional schematic of the present invention;
Fig. 4 is that the present invention erects the P-P revolved section schematic diagram after back-up sand;
Fig. 5 is core iron bore position of the present invention and the schematic perspective view of emitting gas rope.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated.
As shown in Figure 1 to Figure 3, a kind of large-scale body main oil gallery core mold, comprises core box 1, lower core box 11, core iron 10, funnel 9 and locking device; Upper core box 1 and lower core box 11 symmetries, described upper core box 1 has first circular trough, lower core box 11 has lower semi-circular groove, upper core box 1 is interlocked and forms main oil gallery core die cavity with lower core box 11, main oil gallery core die cavity forms main oil gallery core core box cavity, described locking device lays respectively on core box 1 and lower core box 11, and upper core box 1 and lower core box 11 are locked; Described locking device comprises fastening ear 14 and high-strength bolt, and core box 1 and lower core box 11 both sides along continuous straight runs stretch out fastening ear 14 to outer on described, and described high-strength bolt is locked upper core box 1 and lower core box 11 through fastening ear 14.Described upper core box 1 is first hollow cylinder cavity, in the border of described first hollow cylinder cavity, vertical direction is upwards extended with Jia Qiang Zhu vertically, described lower core box 11 is second hollow cylinder cavity, in the border of described second hollow cylinder cavity, vertical direction downward-extension has and adds strong Zhu vertically, is cast with circular hole 15 in described adding on strong Zhu.Also comprise core ejection mechanism, described core ejection mechanism comprises upper plate 3, lower roof plate 7, push rod 5, bolt 4, nut and push rod 13, described upper plate 3 and lower roof plate 7 peak at respectively on the upper and lower semi-hollow circular cylindrical cavity of first hollow cylinder cavity of core box 1 and lower core box 11, the end of bolt 4 is fixing can be along bolt shaft to push rod 13 in relative rotation, described upper plate 3 and lower roof plate 7 are individually fixed on bolt 4, described bolt 4 can move up and down along the nut that is fixed on upper core box 1 and lower core box 11, one end of described push rod 5 is individually fixed on upper plate 3 and lower roof plate 7, the other end of push rod 5 peaks on film covered sand core fuse through first hollow cylinder cavity and second hollow cylinder cavity respectively.In the time that bolt 4 moves up and down, upper plate 3 can move up and down with lower roof plate 7 together with bolt 4, thereby drives the movement of push rod 5.In upper plate 3 vertical direction vertically respectively relatively-movable be connected with multiple on guide post 6, relatively-movablely respectively in lower roof plate vertical direction be vertically connected with multiple lower guide posts 18, upper guide post 6 one end are fixed on core box, lower guide post 18 one end are fixed on lower core box, in the time that upper plate 3 and lower roof plate 7 move, upper guide post 6 and lower guide post 18 can guide respectively the moving direction of upper plate 3 and lower roof plate 7, thereby realize the accurate location of upper plate 3 and lower roof plate 7.Described core iron 10 is positioned at main oil gallery core core box cavity, the dismountable one end of being fixed on main oil gallery core die cavity of funnel 9.Also comprise core iron positioner, described core iron positioner comprises positioning table 2 and alignment pin, described positioning table 2 is positioned at a side of main oil gallery core die cavity, alignment pin is fixed on funnel 9, and alignment pin can be fixed in the endoporus of core iron 10, on alignment pin, have groove and be connected with the endoporus of core iron 10.As shown in Figure 5, on described core iron 10, be drilled with multiple through holes.Described through hole for radially equally distributed many rounds footpath be Ф 10 ~ 20MM, axial spacing is the uniform hole of 200 ~ 400MM.When boring, radially directly bore along core iron 10, form two rounds.Then by core iron 10 half-twists, with stagger the vertically distance of 100MM of two rounds that bored, bore another 2 rounds.Forming and boring 4 row Ф 10MM spacing is the uniform hole of 200MM, makes core iron 10 inside and outside precoated sands couple together after boring, is convenient to the gas of core to discharge by the rope of giving vent to anger.Be wound with in the periphery of core iron 10 rope of giving vent to anger, described in give vent to anger rope one end be fixed on through hole, the other end grows core iron 10.Outer surface at upper core box 1 and lower core box 11 is fixed with respectively hanging axis 12.
In the time of needs coremaking, upper core box 1 is steadily sling, and by clean core box internal cleaning, by push rod 13, bolt 4 is rotated, by upper guide post 6 and lower guide post 18, the lower roof plate of the upper plate of upper core box 13 and lower core box 11 7 is replied and put in place, guarantee that push rod 5 is equal with core box inner surface.At the outer winding of core iron 10 rope of giving vent to anger, one end is fixed from the hole of Ф 10MM, and the other end grows core box 300MM.Core iron 10 is put on the position of inner chamber positioning table 2 of lower core box 11 and locates.Upper core box 1 is sling, be put on lower core box 11 by alignment pin.As shown in Figure 4, back-up sand funnel 9 is put into positioning spigot 17 places of core box end face, by the alignment pin of back-up sand funnel 9, the other end of core iron 10 is lived to position surely simultaneously.Symmetrical by fastening the fastening ear 14 of upper and lower core box good, the hanging axis 12 that hangs core box erects core box entirety.By back-up sand funnel 9, core box inner chamber is filled up after precoated sand, be put into plain jolter and carry out microseism; After guaranteeing that the inside and outside sands of core iron 10 are filled out and put in place, with repairing furnace charge, back-up sand mouth place is sealed.Core box is set level again, by heater, heating tube 8 is switched on, in order to prevent core box heating and cooling, time distortion causes crackle to the circular hole 15 of core box, utilizes solidifying of temperature-time controller control precoated sand core.In the time that core box temperature is brought down below 50 °, the bolt at fastening ear 14 places is laid down.Rotate gently back-up sand funnel 9 and take off.The push rod 13 that simultaneously pushes hard core box rotates bolt 4, as shown in Figure 3, first by core box push rod 16 by first upper core box 1 jack-up 5MM-10MM, again upper core box 1 is slowly sling, the push rod 13 that simultaneously pushes hard lower core box 11 rotates bolt 4, drive push rod 5 by core jack-up 30MM left and right by lower roof plate 7, this core ejection mechanism push rod 5 is respectively fixed on upper plate 3 and lower roof plate 7, as a whole with upper plate 3 and lower roof plate 7, be convenient to simultaneously by steady core jack-up, axially uniform through core along core with 3 soft bands, manually core is put into smooth position.
Embodiment bis-: in addition, in order to ensure the precision of main oil gallery core die cavity, can make certain thickness first circular cavity and lower semi-circular cavity, upper core box and lower core box are interlocked and form main oil gallery core die cavity.Although this structure is consumptive material relatively, also can realize object of the present invention.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (9)
1. a large-scale body main oil gallery core mold, is characterized in that: comprise core box, lower core box, core iron, funnel and locking device; Described upper core box has first circular trough, lower core box has lower semi-circular groove, and upper core box and lower core box are interlocked and form main oil gallery core die cavity, and main oil gallery core die cavity forms main oil gallery core core box cavity, described locking device lays respectively on core box and lower core box, by upper core box and the locking of lower core box; Described core iron is positioned at main oil gallery core core box cavity, the dismountable one end of being fixed on main oil gallery core die cavity of funnel.
2. large-scale body main oil gallery core mold according to claim 1, it is characterized in that: described upper core box is first hollow cylinder cavity, border at described first hollow cylinder cavity is upwards extended with Jia Qiang Zhu vertically, described lower core box is second hollow cylinder cavity, is extended with vertically Jia Qiang Zhu downwards in the border of described second hollow cylinder cavity.
3. large-scale body main oil gallery core mold according to claim 2, is characterized in that: add on strong Zhu and be cast with circular hole in described both sides.
4. large-scale body main oil gallery core mold according to claim 1 and 2, it is characterized in that: also comprise core ejection mechanism, described core ejection mechanism comprises top board, push rod, bolt, nut and push rod, the end of bolt is fixing can be along bolt shaft to push rod in relative rotation, described top board is fixed on bolt, described bolt can move up and down along the nut being fixed on upper core box and lower core box, one end of described push rod is fixed on top board, and the other end of push rod peaks on film covered sand core fuse through the inwall of main oil gallery core die cavity respectively.
5. large-scale body main oil gallery core mold according to claim 1 and 2, it is characterized in that: also comprise core iron positioner, described core iron positioner comprises positioning table and alignment pin, described positioning table is positioned at a side of main oil gallery core die cavity, alignment pin is fixed on funnel, and alignment pin can be fixed in the endoporus of core iron, on alignment pin, have groove and be connected with the endoporus of core iron.
6. large-scale body main oil gallery core mold according to claim 1 and 2, is characterized in that: on described core iron, be drilled with many exhausting holes.
7. large-scale body main oil gallery core mold according to claim 6, is characterized in that: described through hole for radially equally distributed many rounds footpath be Ф 10 ~ 20MM, axial spacing is the uniform hole of 200 ~ 400MM.
8. large-scale body main oil gallery core mold according to claim 6, is characterized in that: be wound with in the periphery of core iron the rope of giving vent to anger, described in give vent to anger rope one end be fixed on through hole, the other end grows core iron.
9. a large-scale body main oil gallery core mold core-making method, is characterized in that: upper core box and lower core box are interlocked and form main oil gallery core die cavity, core iron is placed in main oil gallery core die cavity, by dismountable funnel one end of being fixed on main oil gallery core die cavity; Use high-strength bolt by lower core box and the locking of lower core box, then core box is erected, fill up precoated sand; After ram-jolt, seal back-up sand mouth, then core box is set level, connect heating tube, make film covered sand core completely curing; Last air cooling, to room temperature, ejects core.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410307335.8A CN104117630B (en) | 2014-06-30 | 2014-06-30 | Main oil gallery sand core mold of large engine body and core manufacturing method |
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| CN201410307335.8A CN104117630B (en) | 2014-06-30 | 2014-06-30 | Main oil gallery sand core mold of large engine body and core manufacturing method |
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| CN104117630A true CN104117630A (en) | 2014-10-29 |
| CN104117630B CN104117630B (en) | 2017-01-18 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104353791A (en) * | 2014-11-13 | 2015-02-18 | 四川南车共享铸造有限公司 | Sand core structure for oil pipe casting and manufacturing method and application thereof |
| CN106424592A (en) * | 2016-11-01 | 2017-02-22 | 华东泰克西汽车铸造有限公司 | Horizontal parting fine oil duct core manufacturing device |
| CN106541083A (en) * | 2016-12-08 | 2017-03-29 | 广西玉柴机器股份有限公司 | The core-making method of large-sized diesel engine cylinder water channel core |
| CN107052237A (en) * | 2017-06-09 | 2017-08-18 | 安徽全柴天和机械有限公司 | A kind of core box structure for preparing diesel engine integral sand core |
| CN111390120A (en) * | 2020-05-09 | 2020-07-10 | 大连华锐重工铸业有限公司 | Core making method of middle hole sand core of large injection molding machine template casting |
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| CN202427893U (en) * | 2012-01-06 | 2012-09-12 | 广西玉柴机器股份有限公司 | Mould of main oil duct sand core of large diesel engine |
| CN103736919A (en) * | 2014-01-29 | 2014-04-23 | 广西玉柴机器股份有限公司 | Mould of air cooler sand core in large diesel engine |
| CN203900386U (en) * | 2014-06-30 | 2014-10-29 | 济柴聊城机械有限公司 | Sand core die of main oil gallery of large machine body |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104353791A (en) * | 2014-11-13 | 2015-02-18 | 四川南车共享铸造有限公司 | Sand core structure for oil pipe casting and manufacturing method and application thereof |
| CN104353791B (en) * | 2014-11-13 | 2016-09-21 | 四川南车共享铸造有限公司 | A kind of oil pipe foundry sand cored structure and preparation method thereof, application |
| CN106424592A (en) * | 2016-11-01 | 2017-02-22 | 华东泰克西汽车铸造有限公司 | Horizontal parting fine oil duct core manufacturing device |
| CN106424592B (en) * | 2016-11-01 | 2018-08-24 | 华东泰克西汽车铸造有限公司 | A kind of thin oil duct core core making device of horizontal parting |
| CN106541083A (en) * | 2016-12-08 | 2017-03-29 | 广西玉柴机器股份有限公司 | The core-making method of large-sized diesel engine cylinder water channel core |
| CN107052237A (en) * | 2017-06-09 | 2017-08-18 | 安徽全柴天和机械有限公司 | A kind of core box structure for preparing diesel engine integral sand core |
| CN111390120A (en) * | 2020-05-09 | 2020-07-10 | 大连华锐重工铸业有限公司 | Core making method of middle hole sand core of large injection molding machine template casting |
| CN111390120B (en) * | 2020-05-09 | 2021-04-23 | 大连华锐重工铸业有限公司 | Core making method of middle hole sand core of large injection molding machine template casting |
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| CN104117630B (en) | 2017-01-18 |
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Address after: 252000 No. 169, Liaohe Road, Liaocheng Economic Development Zone, Liaocheng, Shandong Applicant after: Liaocheng Xin Luo Machinery Co., Ltd. Address before: 252000 No. 169, Liaohe Road, Liaocheng Economic Development Zone, Liaocheng, Shandong Applicant before: JICHAI LIAOCHENG MACHINERY CO., LTD. |
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Denomination of invention: Main oil gallery sand core mold of large engine body and core manufacturing method Effective date of registration: 20181221 Granted publication date: 20170118 Pledgee: Huaxia Bank Limited by Share Ltd Liaocheng Dongchang Branch Pledgor: Liaocheng Xin Luo Machinery Co., Ltd. Registration number: 2018370000227 |