CN102380585A - Core making die, core making apparatus and core making method - Google Patents
Core making die, core making apparatus and core making method Download PDFInfo
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- CN102380585A CN102380585A CN2011103036622A CN201110303662A CN102380585A CN 102380585 A CN102380585 A CN 102380585A CN 2011103036622 A CN2011103036622 A CN 2011103036622A CN 201110303662 A CN201110303662 A CN 201110303662A CN 102380585 A CN102380585 A CN 102380585A
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Abstract
The invention which discloses a core making die, a core making apparatus and a core making method belongs to the casting field. The die is characterized in that: the die comprises a lower model, a quantitative upper model, a compact pressure head, a pressure head connecting plate, a sand core ejection mechanism and guiding shafts; the pressure head connecting plate which is positioned on the top of the core making die is connected with the compact pressure head and is also connected with the guiding shafts, one end of each guiding shaft is connected with the pressure head connecting plate, is fixed on the pressure head connecting plate and penetrates through the pressure head connecting plate, the quantitative upper model and the lower model, and the other end of each guiding shaft is connected with the bottom end of the lower model; the quantitative upper model can up-down slide through the guiding shafts; and one end of the sand core ejection mechanism penetrates through the lower model. The core making die of the invention, which has the advantages of simple structure, simple operation, fast loading and unloading, low cost, simple, fast and continuous mechanical motion, convenient sand filling and easy metering, allows the labor intensity of workers to be reduced, the core making production efficiency to be improved, the sand core quality and the casting quality to be improved, and the production cost to be reduced.
Description
Technical field
The invention belongs to casting field, particularly a kind of die for making core, coremaking equipment and core-making method.
Background technology
In the cast iron pipe fittings casting technique, the formative technology of clay sand core is the important step of influence whole clay-bonded sand foundry technology process production efficiency, product quality and production cost always.The casting core method mainly contains at present: two big types of manual core making and machine coremaking.
The commonplace method of a kind of present use of manual core making formula.Use and the many variety production of small lot, only need die for making core just can produce, need not equipment.But the shortcoming of this core technology is: 1) labour intensity is big, inefficiency.One coremaker's every day maximum coremaking quantity be 100 moulds time.2) receive the physical restriction of operating personnel, hardness of sand mould surface can only reach about 75, and the degree of packing is low, has influenced the presentation quality of foundry goods.3) it is tight that two hemihedrism cores overlap the face joint portion, forms burr at the foundry goods inwall easily during foundry goods casting molten iron, strengthened the workload of back operation finishing polishing.4) cost of labor is high.
In the machine core-making method, coremaking is divided into ram-jolt formula and rockover ram-jolt formula, microseism compacting type, spiral squeezing type and core shooting formula again.Wherein, ram-jolt formula and rockover ram-jolt formula coremaking equipment are used comparatively general, but its vibrations noise is big, and production efficiency is low, and factory building foundation is required height, and equipment manufacturing cost is high, is only applicable to big core batch machining.Microseism compacting type coremaking production efficiency of equipment is higher, and applicable to the coremaking of clay sand core, resin sand core and oil core, comparatively complicated but shortcoming is a device structure, cost is high.Sweep coremaking is only applicable to circle and the constant core of section, and the scope of application is very little.
In traditional casting core method, die for making core is a nucleus equipment.Traditional die for making core is mainly monoblock type core box, fraction core box, knockout core, sweep coremaking.It is fairly simple and have the core on big plane to make that the monoblock type core box is mainly used in shape.Though can be used for machine coremaking, the scope of application has certain limitation.The fraction core box adopts the manual back-up sand consolidation of two halves core box mould, the two halves core box is overlapped process a complete core then.This core box can't be used for machine coremaking.Knockout core is mainly used in the complex-shaped little medium-and-large-sized core of mould gradient that opens.Since complex structure, and need the mould turnover off-type, be not suitable for machine coremaking.
In realizing process of the present invention, the inventor finds that there is following problem at least in prior art:
Manual core making is consuming time oversize, inefficiency, and labor intensive, existing mechanical coremaking complex structure, operation inconvenience, energy consumption is high, and coremaking is of poor quality, and the coremaking shape that is suitable for is less, and cost is higher.
Summary of the invention
In order to solve the problem that exists in the prior art, the invention provides a kind of die for making core, coremaking equipment and core-making method.
Wherein, a kind of die for making core, said mould comprises: drag, quantitative patrix, consolidation pressure head, pressure head connecting plate, core ejecting mechanism and the axis of guide;
Wherein, Said pressure head connecting plate is positioned at the top of said die for making core; And link to each other with the said axis of guide with said consolidation pressure head; One end of the said axis of guide connects and also is fixed in said pressure head connecting plate, and through said pressure head connecting plate, saidly touch and said drag on quantitatively, the other end of the said axis of guide connects said drag bottom; Said quantitative patrix can slide up and down through the said axis of guide; One end of said core ejecting mechanism is through said drag.
Further, said core ejecting mechanism specifically comprises: push rod and ejecting mechanism release link;
One end of said push rod is used to eject the core of formation through said drag;
One end of said ejecting mechanism release link is used for said ejecting mechanism resetting-mechanism is resetted through said drag.
Further, the said axis of guide is two, two diagonal angle ends that connect and be fixed in said pressure head connecting plate respectively of said two axis of guides.
Further, the below of said pressure head connecting plate is connected with positioning boss, is used to weigh the up position of said consolidation pressure head.
Further, said die for making core also comprises: mold cavity;
Said mold cavity is made up of the part curved surface of the part curved surface of said consolidation pressure head, said quantitative patrix and the curved surface of said drag.
Based on a kind of coremaking equipment of above-mentioned die for making core, said coremaking equipment comprises:
Frame, consolidation cylinder, die for making core, lower bolster, hopper and open the mould cylinder;
Wherein, said die for making core is installed on the said lower bolster, and the said mould cylinder that opens is connected with quantitative patrix, the core ejecting mechanism of said die for making core, and said consolidation cylinder is connected with the pressure head connecting plate of said die for making core.
Based on a kind of core-making method of above-mentioned coremaking equipment, said method comprises:
When die for making core was in reset mode, said die for making core obtained the core sand that is filled into through hopper;
When said core sand is filled on the quantitative patrix plane, stop to fill out and put said core sand, start the consolidation cylinder, said consolidation cylinder drives the consolidation pressure head and goes upward to positioning boss, and plane contact on said consolidation pressure head and the said quantitative patrix makes said core sand compress shaping;
Starting said consolidation cylinder moves upward and mentions said consolidation pressure head;
Start the said mould cylinder that opens, the said mould cylinder that opens drives said quantitative patrix and moves upward and open mold cavity, drives said core ejecting mechanism simultaneously and ejects said core;
Take out said core.
Further, said core sand compresses shaping, specifically comprises:
Said core sand compresses shaping in said mold cavity.
Further, said quantitative patrix is for setting according to core volume that meets degree of packing requirement and the long-pending ratio of loose filled core sand body, and said ratio was specially 1: 1.96.
The beneficial effect of the technical scheme that the embodiment of the invention provides is: simple in structure, easy and simple to handle, loading and unloading are quick; Cheap, mechanical action is simple, quick and have continuity, and back-up sand is convenient; Be easy to metering, really can alleviate labor strength, improve coremaking production efficiency; Improve core quality and casting quality, reduce production costs.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention; To do to introduce simply to the accompanying drawing that uses among the embodiment below; Obviously, below listed accompanying drawing only be some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of die for making core of providing of the embodiment of the invention 1;
Fig. 2 is the structural representation of a kind of coremaking equipment of providing of the embodiment of the invention 2;
Fig. 3 be in a kind of core-making method of providing of the embodiment of the invention 3 when die for making core is in reset mode the sketch map of die for making core;
Fig. 4 be in a kind of core-making method of providing of the embodiment of the invention 3 when beginning through the hopper back-up sand sketch map of die for making core;
Fig. 5 is the sketch map that compresses die for making core when being shaped in a kind of core-making method of providing of the embodiment of the invention 3 when core sand;
Fig. 6 be in a kind of core-making method of providing of the embodiment of the invention 3 when driving the core ejecting mechanism and eject core the sketch map of die for making core;
Fig. 7 be in a kind of core-making method of providing of the embodiment of the invention 3 when taking out core the sketch map of die for making core;
Among the above-mentioned accompanying drawing 1-7, the component list of each label representative is following:
1 drag; 2 quantitative patrixes; 3 consolidation pressure heads; 4 pressure head connecting plates; 5 core ejecting mechanisms; 6 axis of guides; 7 push rods; 8 ejecting mechanism release links; 9 frames; 10 consolidation cylinders; 11 die for making core; 12 lower bolsters; 13 hoppers; 14 open the mould cylinder; 15 positioning boss; 16 quantitative back-up sands are to this plane; 17 back-up sands; 18 quantitatively highly; 19 shaping cores.
The specific embodiment
For making the object of the invention, technical scheme and advantage clearer, will combine accompanying drawing that embodiment of the present invention is done to describe in detail further below.
Embodiment:
As shown in Figure 1, a kind of die for making core comprises drag 1, quantitative patrix 2, consolidation pressure head 3, pressure head connecting plate 4, core ejecting mechanism 5 and the axis of guide 6;
Wherein, Pressure head connecting plate 4 is positioned at the top of die for making core, and links to each other with the axis of guide 6 with consolidation pressure head 3, and the end connection of the axis of guide 6 also is fixed in pressure head connecting plate 4; And touch and drag 1 through pressure head connecting plate 4, on quantitatively, the other end of the axis of guide 6 connects drag 1 bottom; Quantitatively patrix 2 can slide up and down through the axis of guide 6; One end of core ejecting mechanism 5 is through drag 1.
In the die for making core, comprise that also is used to form a core mould die cavity, this mold cavity is made up of consolidation pressure head 3 part curved surfaces, quantitative patrix 2 part curved surfaces and drag 1 curved surface; , consolidation pressure head 3 just forms the core profile surface of a complete closure when going upward to plane contact on positioning boss 15 and the quantitative patrix 2.
In the die for making core, core ejecting mechanism 5 comprises ejecting mechanism release link 8 and push rod 7; Wherein, ejecting mechanism release link 8 is one, and push rod 7 is two.One end of push rod 7 is used to eject the core of formation through drag 1; One end of ejecting mechanism release link 8 is used for the ejecting mechanism resetting-mechanism is resetted through drag 1.
Pressure head connecting plate 4 is positioned at the top of die for making core, and links to each other with the axis of guide 6 with consolidation pressure head 3 simultaneously, and the axis of guide 6 is two, connects and be fixed in two diagonal angle ends of pressure head connecting plate 4 respectively, touches and drag 1 through pressure head connecting plate 4 with quantitatively; Quantitatively patrix 2 can slide up and down through two axis of guides 6; Push rod 7 in the core ejecting mechanism 5 is two, and an end is used to eject the core of formation simultaneously through drag 1 bottom; Ejecting mechanism release link 8 one ends in the core ejecting mechanism 5 can reset core ejecting mechanism 5 through ejecting mechanism release link 8 through drag 1; Pressure head connecting plate 4 belows also are connected with two positioning boss 15, are used to weigh the up position of consolidation pressure head 3.
The coremaking module that the embodiment of the invention provided has following advantage: simple in structure, easy and simple to handle, loading and unloading are quick; Cheap, mechanical action is simple, quick and have continuity, and back-up sand is convenient; Be easy to metering, really can alleviate labor strength, improve coremaking production efficiency; Improve core quality and casting quality, reduce production costs.
As shown in Figure 2, the embodiment of the invention provides a kind of coremaking equipment based on embodiment 1.
Coremaking equipment comprises:
Frame 9, consolidation cylinder, die for making core 11, lower bolster 12, hopper 13 and open mould cylinder 14;
Wherein, die for making core 11 is installed on the lower bolster 12, opens mould cylinder 14 and is connected with quantitative patrix 2, the core ejecting mechanism 5 of die for making core 11, and consolidation cylinder 10 is connected with the pressure head connecting plate 4 of die for making core 11.
Need to prove that die for making core 11 is the die for making core that is provided among the embodiment 1.
Based on the foregoing description, present embodiment provides a kind of core-making method, and this method specifically comprises:
, die for making core 11 begins when being in reset mode (as shown in Figure 3) through hopper 13 back-up sands (as shown in Figure 4); When core sand is filled on the quantitative patrix 2 plane, wipe off, start consolidation cylinder 10 and drive consolidation pressure heads 3 and move downward plane contact to positioning boss 15 and the quantitative patrix 2, make core sand compress shaping (as shown in Figure 5) with scraper plate; Startup consolidation cylinder 10 moves upward and mentions consolidation pressure head 3; Open mould cylinder 14 and drive quantitative patrix 2 and move upward and open mould, drive core ejecting mechanism 5 simultaneously and eject core (as shown in Figure 6); The manual core (as shown in Figure 7) that takes out.
Its operation principle specifically comprises:
Die for making core 11 is the mould structures that adopt horizontal parting and vertical consolidation, and this structure is convenient to the even consolidation of core; Mold cavity is by consolidation pressure head 3 part curved surfaces, quantitatively patrix 2 part curved surfaces and drag 1 curved surface are formed, when consolidation pressure head 3 comes downwards to plane contact on positioning boss 15 and the quantitative patrix 2, just forms the core profile surface of a complete closure; The core volume that foundation meets degree of packing requirement designs quantitative patrix 2 with the long-pending ratio of loose filled core sand body, to adjust the mold cavity volume that quantitative patrix 2 forms when quantitatively the height (see figure 4)s are confirmed drag 1 and quantitative patrix 2 closures; When consolidation pressure head 3 comes downwards on positioning boss 15 and the quantitative patrix 2 plane contact, just can be pressed into and meet the core that the degree of packing requires.
In a kind of operation principle of die for making core 11, confirming of satisfactory core volume and loose filled core sand volume ratio specifically comprises: core volume and loose filled core sand volume ratio are the quantitatively critical datas of height (see figure 4) of the quantitative patrix 2 of decision.Through repetition test, according to existing manual core making core sand (water content 4-6%), when the core case hardness reaches 85-90, the core averag density is when 1.5 gram/dm3 are above, and core volume and loose filled core sand volume ratio are 1: 1.96.
In a kind of operation principle of die for making core 11; Surely the quantitative height of the amount of comprising patrix confirms; Specifically comprise: taking advantage of 1.96 according to shaping core volume, to calculate loose filled core sand body long-pending, calculates the quantitative patrix 2 quantitative height dimensions of required packing volume again according to consolidation pressure head 3 floor projection interfacial areas.
In a kind of operation principle of die for making core 11; Be pressed into and meet the core that the degree of packing requires; Specifically comprise: general hand moulding consolidation compacting specific pressure is 0.13-0.4Mpa, and core surface average hardness has only 70-80, and foundry goods is prone to produce shrinkage cavity, shrinkage porosite, buckle and scab defective; Embodiment of the invention medium sand wicking surface average hardness will reach 85-90, and the core averag density is more than 1.5 gram/dm3; Reach this requirement, consolidation compacting specific pressure must reach 0.4-0.7Mpa; Consolidation compacting specific pressure according to consolidation pressure head 3 floor projection sectional areas and designing requirement calculates required consolidation pressure; Go out required consolidation cylinder 10 bore size according to required consolidation pressure and source of the gas calculation of pressure.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a die for making core is characterized in that, said mould comprises: drag, quantitative patrix, consolidation pressure head, pressure head connecting plate, core ejecting mechanism and the axis of guide;
Wherein, Said pressure head connecting plate is positioned at the top of said die for making core; And link to each other with the said axis of guide with said consolidation pressure head; One end of the said axis of guide connects and also is fixed in said pressure head connecting plate, and through said pressure head connecting plate, saidly touch and said drag on quantitatively, the other end of the said axis of guide connects said drag bottom; Said quantitative patrix can slide up and down through the said axis of guide; One end of said core ejecting mechanism is through said drag.
2. die for making core according to claim 1 is characterized in that, said core ejecting mechanism specifically comprises: push rod and ejecting mechanism release link;
One end of said push rod is used to eject the core of formation through said drag;
One end of said ejecting mechanism release link is used for said ejecting mechanism resetting-mechanism is resetted through said drag.
3. die for making core according to claim 1 is characterized in that, the said axis of guide is two, two diagonal angle ends that connect and be fixed in said pressure head connecting plate respectively of said two axis of guides.
4. die for making core according to claim 1 is characterized in that the below of said pressure head connecting plate is connected with positioning boss, is used to weigh the up position of said consolidation pressure head.
5. die for making core according to claim 1 is characterized in that said die for making core also comprises: mold cavity;
Said mold cavity is made up of the part curved surface of the part curved surface of said consolidation pressure head, said quantitative patrix and the curved surface of said drag.
6. based on the described die for making core of claim 1-5, a kind of coremaking equipment is characterized in that, said coremaking equipment comprises:
Frame, consolidation cylinder, die for making core, lower bolster, hopper and open the mould cylinder;
Wherein, said die for making core is installed on the said lower bolster, and the said mould cylinder that opens is connected with quantitative patrix, the core ejecting mechanism of said die for making core, and said consolidation cylinder is connected with the pressure head connecting plate of said die for making core.
7. based on a kind of core-making method of claim 6, it is characterized in that said method comprises:
When die for making core was in reset mode, said die for making core obtained the core sand that is filled into through hopper;
When said core sand is filled on the quantitative patrix plane, stop to fill out and put said core sand, start the consolidation cylinder, said consolidation cylinder drives the consolidation pressure head and goes upward to positioning boss, and plane contact on said consolidation pressure head and the said quantitative patrix makes said core sand compress shaping;
Starting said consolidation cylinder moves upward and mentions said consolidation pressure head;
Start the said mould cylinder that opens, the said mould cylinder that opens drives said quantitative patrix and moves upward and open mold cavity, drives said core ejecting mechanism simultaneously and ejects said core;
Take out said core.
8. method according to claim 7 is characterized in that, said core sand compresses shaping, specifically comprises:
Said core sand compresses shaping in said mold cavity.
9. method according to claim 7 is characterized in that, said quantitative patrix is for setting according to core volume that meets degree of packing requirement and the long-pending ratio of loose filled core sand body, and said ratio was specially 1: 1.96.
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| CN2011103036622A CN102380585A (en) | 2011-10-10 | 2011-10-10 | Core making die, core making apparatus and core making method |
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| CN2011103036622A CN102380585A (en) | 2011-10-10 | 2011-10-10 | Core making die, core making apparatus and core making method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102626772A (en) * | 2012-03-26 | 2012-08-08 | 苏州明志科技有限公司 | On-line core making technology and device |
| CN103192029A (en) * | 2013-03-26 | 2013-07-10 | 山东宏马工程机械有限公司 | Annular core for brake drum casting technology, core manufacturing equipment and core manufacturing technology |
| CN105478676A (en) * | 2016-01-25 | 2016-04-13 | 宁波钰烯阴极保护材料有限责任公司 | Sand core equipment for silicon iron anode tubes |
| CN106270413A (en) * | 2016-08-31 | 2017-01-04 | 西安鑫龙机械铸造有限公司 | A kind of device for making film covered sand core and using method thereof |
| CN110523930A (en) * | 2019-09-26 | 2019-12-03 | 玉林市伟铭机械有限公司 | It is a kind of that sand device and operating method are automatically penetrated based on UG parametrization |
| 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 |
| CN111922297A (en) * | 2020-08-24 | 2020-11-13 | 济南柳玉鑫机械设备有限公司 | Die opening method of core shooting machine |
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| CN106270413A (en) * | 2016-08-31 | 2017-01-04 | 西安鑫龙机械铸造有限公司 | A kind of device for making film covered sand core and using method thereof |
| CN110523930A (en) * | 2019-09-26 | 2019-12-03 | 玉林市伟铭机械有限公司 | It is a kind of that sand device and operating method are automatically penetrated based on UG parametrization |
| 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 |
| CN111922297A (en) * | 2020-08-24 | 2020-11-13 | 济南柳玉鑫机械设备有限公司 | Die opening method of core shooting machine |
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Application publication date: 20120321 |