CN100479945C - Bolster and side frame integral core producing method - Google Patents
Bolster and side frame integral core producing method Download PDFInfo
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- CN100479945C CN100479945C CNB2007101073283A CN200710107328A CN100479945C CN 100479945 C CN100479945 C CN 100479945C CN B2007101073283 A CNB2007101073283 A CN B2007101073283A CN 200710107328 A CN200710107328 A CN 200710107328A CN 100479945 C CN100479945 C CN 100479945C
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Abstract
The invention discloses a production method of an integrated core for a bolster and a side frame. The method is used to a process of the integrated core of a cavity in the bolster and the side frame, which is designed as an upper and a lower sand cores, comprising: starting a sand mixing machine to produce a first slice of sand core by sand filling, and hardening the first slice of sand core in a corresponding sand core box; starting the sand mixing machine to produce a second slice of sand core by sand filling, in a state that the second slice of sand core is not hardened, combining the second slice of sand core and the core box thereof with the first slice of sand core and the sand core box thereof to hardening second slice of sand core; drawing of patterns of the integrated core. The integrated core production method of the bolster and the side frame provided in the invention omits operation process such as manual assembly, grinding and the like, adopted by the prior technology, due to the integrated core process, meanwhile, according to the production method, the upper and lower sand cores use a selfbonded manner, without bonding by an adhesive, thus a better bonding effect is achieved.
Description
Technical field
The present invention relates to lorry bolster, bogie side frame production, especially relate to the integral core producing method of a kind of bolster, bogie side frame.
Background technology
Bolster, bogie side frame are the important load bearing component of lorry, need to adopt cast steel, with forging type production.Because bolster, bogie side frame have some inner chambers and endoporus, therefore complex structure, when casting, need settle core to form inner chamber in the casting mold die cavity.
At present, the production technology of producing bolster, bogie side frame is core assembling technology, and the core that is about to form bolster, bogie side frame inner chamber is divided into a plurality of parts, at first makes core when producing, and in the casting mold die cavity core is combined to form the inner chamber of foundry goods then.The advantage of this mode is that technology is fairly simple, is convenient to manual operations.
Please referring to Fig. 1, this illustrates when adopting core assembling technology under the prior art, the core figure of bogie side frame.Therefrom as can be seen, the core of this bogie side frame is divided into and is six sections of A, B, C, D, E, F, and each section adopts independent core box to carry out back-up sand coremaking.Under the existing technology, bolster also has similar core segmentation.
Please referring to Fig. 2, this illustrates workflow concrete when adopting core assembling technology.
Step S201 starts puddle mixer to the core box back-up sand, makes the each several part core.
Under the situation that adopts this core assembling technology, the core of bolster, bogie side frame is divided into plurality of sections, and each section adopts corresponding core box, and puddle mixer is made corresponding core box to the back-up sand respectively of each core box.
Step S202 waits for that core hardens in core box.
Step S203 judges whether core hardens to finish.If then enter step S104; If not, then return step S102.
Whether core sclerosis is finished, and generally adopts the mode of manual observation to finish and gets final product.
Step S204 carries out manual molding, is about to take off on the core of core core box and hardened forming.
Step S205, it is right to carry out craft group, bonding to the core section of part core wherein.
This step cooperates each core section of hardened forming as a whole each other, forms complete core, adopts binder to carry out integral body of bonding formation between the part core section.
Above-mentioned molding, the process that group is right can be used manually fully, because long-pending less, the lighter weight of each core segment body is enough to be competent at by hand.
Step S206, to the group to after complete core polish.
Because group has many irregular concavo-convex positions to, core section after bonding in each bond site, needs to adopt the polishing operation that it is smooth.
Step S207, swabbing.
Step S208 is lowered to die cavity.
In aforementioned production method, because whole core is divided into several portions, the weight of each part is lighter relatively, in the workflow before being lowered to die cavity, can adopt manual operations.When casting was finished, the core of segmentation also was convenient to take out in the core chamber.
But there are some defectives that are difficult to overcome in above-mentioned core assembling technology.This be because, the segmentation position of a lot of cores is in the edge at the important force part of product or this position, when core segmentation position occurring at this position, if misoperation or frock wearing and tearing, to cause foundry goods fash to occur, under the fatigue stress effect in casting stress in process of production or the utilization process, may produce the defective of fire check or fatigue crack at this position.Because these core segmentations all are in product cavity, be difficult in process of production finding, after these part entruckings, in the lorry running, easily rupture at these defective locations, influence the lorry security of operation.At present, railway transportation constantly to the high-speed overload development, has increased the risk that above-mentioned defective causes the accident.
In order to address the above problem, begun to adopt integral core technology at present, this technology can solve the defective of core segmentation position.This technology is bolster, bogie side frame inner chamber to be designed to one be divided into two up and down, combines the formation integral core then.This mode can be eliminated the segmentation position of core, like this, just can avoid occurring the above-mentioned defective that influences the lorry trouble free service.
Although above-mentioned integral core technology can solve the quality problems of bolster, bogie side frame, because the volume of two cores is big up and down, manual molding under original core assembling technology, the reciprocity mode of production of manual group can make very poor efficiency of production process, and also be difficult to operation.
Summary of the invention
At the problems referred to above, the technical problem that the present invention solves is, the integral core producing method of a kind of bolster, bogie side frame is provided, this kind technology can adapt to integral core technology, when guaranteeing product quality, can guarantee that production process carries out smoothly, guarantee the efficient of producing.
Integral core producing method provided by the invention, this method are used for the integral core technology that bolster, bogie side frame inner chamber are designed to upper and lower two cores, comprising:
Start first core of puddle mixer back-up sand system, and first core hardened in its corresponding core core box;
Start second core of puddle mixer back-up sand system;
Under second still unhardened situation of core, described first core of having hardened together with the core core box, is combined to second core and core box thereof;
Make second core sclerosis;
The integral sand core molding.
Preferably, after the integral sand core molding, this integral sand core is lowered to die cavity before, also to the core swabbing after this molding.
Preferably, after described first core that will harden is combined to second core core box together with the core core box, take off first core core box.
Preferably, described integral sand core molding, specifically be from the sclerosis after core take off second core core box.
Preferably, carry out this integral sand core being moved to the molding position before described integral sand core plays die process.
Preferably, described first core that has hardened is combined to the step of second core core box together with the core core box, adopts special use to close the core machine and finishes.
Preferably, described first core moves to the relevant position of closing on the core machine with this first core together with its core box after hardening in its corresponding core core box, and this position is to make first core core box and second right dedicated location of core core box group.
Preferably, the station of described each operation moves on conveyer chain and realizes.
Preferably, described first core and second core adopt the organic ester water-glass self-hardening sand material.
The integral core producing method of bolster provided by the invention, bogie side frame owing to adopt integral core technology, has been cancelled manual group that existing production method adopted to operational sequences such as, polishings.Simultaneously, in this production method, upper and lower two cores adopt the method for autoadhesion, and it is bonding to need not to use binder to carry out, and has realized better bonding effect.In a word, production method provided by the invention has made full use of the advantage of integral core technology, can finish the production operation of integral core efficiently, obtains high quality of products expeditiously.
Description of drawings
Fig. 1 is the bogie side frame core figure that adopts under the core assembling technology;
Fig. 2 is the production method flow chart that adopts core assembling technology under the prior art;
Fig. 3 is the flow chart of first embodiment of the invention;
Fig. 4 is the bogie side frame integral core that first embodiment of the invention adopts;
Fig. 5 is first core of bolster integral core that adopts in the first embodiment of the invention;
Fig. 6 is second core of bolster integral core that adopts in the first embodiment of the invention.
The specific embodiment
Please referring to Fig. 3, this illustrates the flow chart of first embodiment of the invention.
This embodiment is the integral core technology at bolster, bogie side frame.Described integral core technology specifically is bolster, bogie side frame inner chamber to be designed to one be divided into two up and down, the integral core of combining then.It is material that bolster, bogie side frame core all adopt existing ripe organic ester water-glass self-hardening sand.
Please referring to Fig. 4, this illustrates the bogie side frame integral core that first embodiment of the invention adopts, and shown in the side view on this figure top, this bogie side frame integral core is that the boundary is divided into upper and lower two with dotted line in scheming.
Please referring to Fig. 5, this illustrates first core of bolster integral core that adopts in the first embodiment of the invention.Fig. 6 illustrates second core of bolster integral core that adopts among this embodiment.Upper and lower two cores are in the center segmentation of spring cushion cap.
Among this embodiment, when producing owing to the employing integral core, the volume of this core body is big, heavy, therefore, in the present embodiment, following production process is finished on production line, adopt corresponding hanging device or conveyer chain, realize position the moving of integral core at each inter process.For example, special-purpose coremaking line can be set, be used to produce bolster bogie side frame integral core, utilize existing puddle mixer to finish bolster, bogie side frame upper and lower two large stretch of core machinery back-up sands; Utilize the special-purpose core machine that closes respectively the mode that bolster, bogie side frame upper and lower two large stretch of cores carry out core assembly in the box to be realized the seamless spliced of bolster, bogie side frame upper and lower part core.Below describe the operating procedure of this embodiment in detail.The described core machine that closes adopts automatically and manual two kinds of control modes, use the clamping of hydraulic mechanism control to core box, use motor drive mechanism to realize the upset of core box, alignment pin is adopted in the location of core box up and down, when location core box can on the ball-type floating platform, move, the employing optoelectronic induction determines whether core box moves into place, close that core puts in place and whether core and loose piece come off fully.
Step S301 starts first core of puddle mixer back-up sand system.
Concrete back-up sand core-making method is same as the prior art, but adopts a complete last core core box to fill and present core, rather than fills and presents each core section respectively.
Step S302 waits for that first core hardens in last core core box.
Step S303 judges whether first core hardens and reaches need of work; If then enter step S304; If not, then return step S302.
Concrete determination methods adopts manual observation to get final product, and for example, touches the hardness of pushing the test core with hand.
Step S304 goes to first core and to close the relative position of core core box, core machine up and down together with last core core box.
After first core sclerosis, adopt conveyer chain that first core is moved to the relevant position of closing on the core machine together with last core core box from original back-up sand coremaking position, this position is and the relative position of following core core box, has special-purpose installed body, this last core that has core box is fixed, in follow-up step, finished the operation of closing core so that close the core machine.
Step S305 starts second core of puddle mixer back-up sand system.
This step and step S304 can carry out simultaneously, and be identical with back-up sand coremaking of the prior art.But S301 is identical with step, and this step is same to adopt a complete following core core box to fill and present core, rather than fills and presents each core section respectively.
Step S306 closes the core machine with first core together with last core core box employing and is combined to down core and core box thereof.
This step must closely be connected with step S305, this be because, need to utilize still unhardened second core in presclerotic stickiness herein, bonding with first core that has hardened, realized the autoadhesion of upper and lower two cores.If second core sclerosis then can not be finished.In the prior art,, need to adopt binder bonding between each core section, because bond site can't be smooth fully, need polish again, can increase many costs like this, prolong process time these positions owing to adopt the core assembly technology.And the foundry goods that each core section binding site can make final production obtain produces defectives such as fash.Avoid the appearance of the intermediate location of core section in the present embodiment, and need not bonding core section and polishing.
Step S307 takes off the core core box.
Because the function of last core core box is finished, and first core hardens, and therefore, can take off the core core box this moment.
Step S308 waits for that second core is hardening in the core core box down.
Step S309 judges whether second core hardens and reaches need of work; If then enter step S310; If not, then return step S308.
Concrete determination methods adopts manual observation to get final product, and for example, touches the hardness of pushing the test core with hand.
Step S310, second core moves to stripper station together with following core core box.
The fixed form of this station is convenient to following core core box is taken off, and can adopt conveyer chain that second core and following core core box thereof are moved to this station.
Step S311, the integral sand core molding.
Because the core box of last core takes off, therefore, this step is actual only need take off down the core core box.
Step S312 is lowered to die cavity behind the swabbing.
Need to prove that the operating sequence of the upper and lower core that adopts among this embodiment fully can be opposite, just earlier following core is carried out back-up sand coremaking operation, last core is carried out back-up sand coremaking operation.At this moment, the upper and lower core operation in the corresponding operation also wants opposite.
Compared with prior art, the method that above-mentioned first embodiment provides provides a kind of production method that integral core is produced that is suitable at the characteristics that adopt integral core explained hereafter bolster, bogie side frame core, adopts this method can save operation, reduces process time.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1, the integral core producing method of a kind of bolster, bogie side frame, this method are used for the integral core technology that bolster, bogie side frame inner chamber are designed to upper and lower two cores, it is characterized in that, comprising:
Start first core of puddle mixer back-up sand system, and first core hardened in its corresponding core core box;
Start second core of puddle mixer back-up sand system;
Under second still unhardened situation of core, described first core of having hardened together with the core core box, is combined to second core and core box thereof;
Make second core sclerosis;
The integral sand core molding.
2, the integral core producing method of bolster according to claim 1, bogie side frame is characterized in that, after the integral sand core molding, this integral sand core is lowered to die cavity before, also to the core swabbing after this molding.
3, the integral core producing method of bolster according to claim 1, bogie side frame is characterized in that, after described first core that will harden is combined to second core core box together with the core core box, takes off first core core box.
4, the integral core producing method of bolster according to claim 3, bogie side frame is characterized in that, described integral sand core molding, specifically be from the sclerosis after core take off second core core box.
5, the integral core producing method of bolster according to claim 4, bogie side frame is characterized in that, carries out this integral sand core being moved to the molding position before described integral sand core plays die process.
6, the integral core producing method of bolster according to claim 1, bogie side frame is characterized in that, described first core that has hardened is combined to the step of second core core box together with the core core box, adopts special use to close the core machine and finishes.
7, the integral core producing method of bolster according to claim 6, bogie side frame, it is characterized in that, after described first core hardens in its corresponding core core box, this first core moved to the relevant position of closing on the core machine together with its core box, and this position is to make first core core box and second right dedicated location of core core box group.
According to the integral core producing method of each described bolster of claim 1-7, bogie side frame, it is characterized in that 8, the station of each operation moves on conveyer chain to be realized.
According to the integral core producing method of each described bolster of claim 1-7, bogie side frame, it is characterized in that 9, described first core and second core adopt the organic ester water-glass self-hardening sand material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101073283A CN100479945C (en) | 2007-05-25 | 2007-05-25 | Bolster and side frame integral core producing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101073283A CN100479945C (en) | 2007-05-25 | 2007-05-25 | Bolster and side frame integral core producing method |
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| Publication Number | Publication Date |
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| CN101053891A CN101053891A (en) | 2007-10-17 |
| CN100479945C true CN100479945C (en) | 2009-04-22 |
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| CNB2007101073283A Active CN100479945C (en) | 2007-05-25 | 2007-05-25 | Bolster and side frame integral core producing method |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101733365B (en) * | 2008-11-06 | 2012-12-05 | 晋西铁路车辆有限责任公司 | Swing bolster and side frame integrated core preparation and core setting technology |
| CN101879581A (en) * | 2010-06-30 | 2010-11-10 | 浙江红马铸造有限公司 | Method for manufacturing small-core sand core |
| CN102441644A (en) * | 2010-12-03 | 2012-05-09 | 南通冠峰铸造有限公司 | Precoated sand core secondary shooting process of casting runner machinery |
| CN102390030B (en) * | 2011-08-22 | 2013-06-19 | 南车长江车辆有限公司 | Method without performing matching on fixed wheel base of side rack of bogie |
| CN103121083B (en) * | 2011-11-18 | 2015-06-03 | 广西玉柴机器股份有限公司 | Casting core-splitting process for Vee cylinder block |
| CN102441647A (en) * | 2011-12-08 | 2012-05-09 | 南车长江车辆有限公司 | Manufacturing method for fully-integrated core of side frame |
| CN102554134A (en) * | 2012-03-01 | 2012-07-11 | 南车长江车辆有限公司 | Rail wagon side frame sand core and manufacturing method thereof |
| CN104493086A (en) * | 2014-12-24 | 2015-04-08 | 南车眉山车辆有限公司 | Integral forming process of DZ1 type side frame guide frame of wagon |
| CN117773006A (en) * | 2024-01-02 | 2024-03-29 | 西安西开精密铸造有限责任公司 | Device for preparing integral sand core and using method |
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2007
- 2007-05-25 CN CNB2007101073283A patent/CN100479945C/en active Active
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Effective date of registration: 20071019 Address after: Heilongjiang city of Qigihar Province, Tiefeng District Factory Road No. 36 Applicant after: Qiqihar Rail Traffic Equipment Co., Ltd. Address before: Tiefeng District of Qigihar City, Heilongjiang province of China Road No. 10 Applicant before: Qiqihaer Railway Stock (Group) Co Ltd, China Beifang Stock Group |
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Address after: 161002 Qigihar City, Heilongjiang province Tiefeng District Plant Road No. 36 Patentee after: CRRC QIQIHAR VEHICLE CO., LTD. Address before: 161002 Qigihar City, Heilongjiang province Tiefeng District Plant Road No. 36 Patentee before: Qiqihar Railway Rolling Stock Co., Ltd. |