CN113579166B - Combined sand core and core making mold and method thereof - Google Patents
Combined sand core and core making mold and method thereof Download PDFInfo
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- CN113579166B CN113579166B CN202110775535.6A CN202110775535A CN113579166B CN 113579166 B CN113579166 B CN 113579166B CN 202110775535 A CN202110775535 A CN 202110775535A CN 113579166 B CN113579166 B CN 113579166B
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- core
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- sand core
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
- B22C15/23—Compacting by gas pressure or vacuum
- B22C15/24—Compacting by gas pressure or vacuum involving blowing devices in which the mould material is supplied in the form of loose particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
- B22C7/06—Core boxes
Abstract
The invention discloses a combined sand core and a core making mold and a core making method thereof. The water jacket sand core and the top cover sand core are designed into a whole; the core making of the integral core group is realized, after the core making of the integral core group is finished, the left module and the right module are pulled open by the side pulling mechanism, the core group is ejected out by the core ejecting mechanism, the core taking clamp clamps the sand core and turns over 180 degrees, and the core group is placed on the roller way tray and conveyed to the next process; the core taking clamp structure of the robot is simplified, the core taking program of the core taking robot is optimized, the production efficiency is improved, the workload of the post procedure is reduced, and the production cost is saved.
Description
Technical Field
The invention belongs to the field of engines, and particularly relates to a combined sand core, a core making mold and a core making method thereof.
Background
At present, in the engine industry, the water jacket sand cores and the top cover sand cores of a plurality of cylinder bodies are independent sand cores, different dies are needed to be used for manufacturing the cores in the production process, and then the water jacket sand cores and the top cover sand cores are integrated through the working procedures of coring (manual or robot), gluing (manual or robot) or shooting nails, core assembly and the like.
The production is carried out according to the process flow, and if all the procedures are adopted and manual production is adopted, the production efficiency is low and the labor cost is high; if the robot is adopted for production, the robot coring fixture and the coring procedure are complex, meanwhile, the post procedure needs to be added with a manual inspection station, and the problems of low production efficiency, high labor cost and the like exist.
Therefore, how to overcome the defects of the prior art is a problem which needs to be solved urgently in the field of the current engines.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a combined sand core, a core making mold and a core making method thereof, so that the water jacket sand core and the top cover sand core are formed at one time through the mold, an integral sand core is formed, the types of the mold are reduced, the production efficiency is improved, the production cost is reduced, and the structure of a robot coring clamp and a robot coring program are optimized.
In order to realize the purpose, the technical scheme adopted by the invention is as follows:
a combined sand core making mold comprises a bottom frame, a lower core jacking mechanism, a lower mold bottom plate, a sand core forming mechanism, an upper mold bottom plate, a sand shooting mechanism, an upper core jacking mechanism, an upper and lower positioning mechanism, a side pulling mechanism and a guide mechanism; the lower die bottom plate is arranged on the bottom frame, and the lower core ejecting mechanism, the lower positioning mechanism, the side drawing mechanism and the guide mechanism are all fixed on the lower die bottom plate; the sand core forming mechanism is arranged between the upper die bottom plate and the lower die bottom plate; the upper positioning mechanism is fixed on the upper die bottom plate; the sand shooting mechanism and the upper core jacking mechanism are arranged on the upper die base plate; after solidification is completed, the side-pulling mechanism is opened along the guide mechanism through outside side pulling, the sand core forming mechanism is separated, a combined sand core with the water jacket sand core and the top cover sand core integrated is obtained, the top core mechanism pushes out the whole combined sand core by a certain height to reach a core taking position of the core taking robot, and the core taking robot enters the next cycle working process after core taking is completed.
Further, the sand core forming mechanism comprises a lower box body, a left module, a right module and an upper box body; the left module and the right module are connected with the left side and the right side drawing mechanisms, the lower box body is fixed on the lower die bottom plate, and the upper box body is fixed on the upper die bottom plate; the shapes of the lower box body, the left module, the right module and the upper box body are respectively the same as the shapes of the corresponding parts of the combined sand core.
Furthermore, the upper positioning mechanism comprises a plurality of positioning pins, and the lower positioning mechanism comprises a plurality of pin sleeves matched with the positioning pins.
Furthermore, the lower die bottom plate is fixed on the bottom frame through screws, and meanwhile, the lower box body, the left module, the right module, the lower positioning mechanism, the side drawing mechanism and the guide mechanism are all fixed on the lower die bottom plate through screws; the upper box body and the upper positioning mechanism are fixed on the upper die bottom plate through screws.
Furthermore, the lower core-ejecting mechanism is fixed on the lower die base plate through screws, so that the sand core is separated from the die, and the required height of the robot for coring is achieved.
Furthermore, the side pumping mechanism is guided by the guide mechanism, so that the left module, the right module and the combined sand core are separated;
furthermore, an air vent plug is arranged at the position of the lower box body, with a smaller sand core sand position, on the back surface.
Further, most of the injection nozzles of the sand injection mechanism are opposite to the water jacket sand core.
The invention also relates to a core making method of the combined sand core, which comprises the following steps:
(1) The mould reaches a sand shooting station; the sand shooting mechanism is used for shooting sand and filling the cavity; the core pressing mechanism presses core sand in the cavity of the upper box body to be flat;
(2) The combined sand core enters a curing period; after the solidification is finished, the upper box body is opened; the mould reaches a core ejecting station; the left module and the right module are pulled apart by the side pulling mechanism; the lower core ejecting mechanism ejects the sand core to a specified height;
(3) The core taking robot takes out the sand core and turns over 180 degrees, and the sand core is placed on the conveying roller way tray.
The invention also relates to a combined sand core which is manufactured by the combined sand core manufacturing mold or the method, wherein the water jacket sand core and the top cover sand core are formed by the mold in one step to form an integral sand core.
In the invention, the sand shooting mechanism and the upper core pushing mechanism are independent modules and are superposed on the upper mould bottom plate.
The lower box body is fastened on the lower die bottom plate through screws to form the local shape of the water jacket sand core. Meanwhile, in order to ensure the quality of the sand core of the water jacket sand core and reduce the waste core rate of the sand core, an exhaust plug is additionally arranged at the position with a smaller sand position of the sand core.
The left module and the right module form the whole shape of the water jacket sand core and are connected on the lower die bottom plate through the guide mechanism. In the use process, the opening and closing of the device are stable through the guiding of the guiding mechanism.
The upper box body is fastened on the upper die bottom plate through screws to form a top cover part of the water jacket core group. When the nozzles are arranged, the quality of the sand cores needs to be considered, so that when the nozzles of the upper box body are arranged, the nozzles are basically arranged along the shape of the water jacket sand cores.
Compared with the prior art, the invention has the beneficial effects that:
after the core making process and the die are applied, the water jacket sand core and the top cover sand core are integrated, the number of the die is reduced, and contents such as robot gluing, core assembly, manual inspection, drying and the like are eliminated; the robot is simultaneously optimized to get core anchor clamps structure and get the core procedure, and the robot only need follow the mould and gets the psammitolite of getting, overturn 180 back with the psammitolite put on rollgang tray can, improved production efficiency, it is specific, have following several aspects:
1. after the water jacket sand core and the top cover sand core are designed into a whole, the minimum wall thickness of the water jacket part is favorably ensured;
2. in the process of processing the die, the processing of the water jacket type block is facilitated;
3. the structure of the coring fixture is simplified, the coring fixture is simplified from the original situation that the clamping of 4 sand cores is completed at the same time, and the situation that only 2 sand cores are required to be taken is simplified;
4. optimizing a coring program of the coring robot, if the coring robot is designed into two sand cores, the coring robot also needs to finish actions of placing a top cover core, assembling a water jacket core, clamping a core group, placing and the like, and the robot program is more complex; after the process is adopted, the two sand cores are designed into the integral sand core, the coring robot only completes coring and placing actions, and the procedure is simpler;
5. by adopting the process, the production efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a perspective view of a water jacket sand core set of the core making process of the present invention;
FIG. 2 is a top view of a lower mold portion of the core making mold for the sand core of FIG. 1;
FIG. 3 is a top view of the upper mold of the core making mold for the sand core of FIG. 1;
FIG. 4 isbase:Sub>A cross-sectional view of the core-making mold of the sand core of FIG. 2 in the direction A-A;
FIG. 5 is a perspective view showing the arrangement of the water jacket core group on the mold;
FIG. 6 is a cross-sectional view of the core-making mold of the sand core of FIG. 2 in the direction B-B;
in the figure: 1-bottom frame; 2-a lower core ejecting mechanism; 3-lower box body; 4-a sand shooting mechanism; 5-an upper core jacking mechanism; 6-lower die bottom plate; 7-upper die bottom plate; 8-a first locating pin sleeve; 81-a second locating pin sleeve; 82-a third dowel sleeve; 9-a first left module; 91-a second left module; 10-a first right module; 101-a second right module; 11-a first guiding mechanism; 111-a second guide mechanism; 12-a first locator pin; 121-a second locating pin; 122-a third locating pin; 13-upper box body; 14-a first side draw mechanism; 141-a second side drawing mechanism; 15-a support seat; 151 a first seat; 152 a second seat; 153 a third seat body; 16-a first guide bar; 161-a second guide bar; 17-right side draw out connection plate; 171-left side draw out link plate; 18-side drawing connection transition plate; 181-first side is connected with a transition plate; 182-the second side is connected with a transition plate; 183-third side drawer connecting transition plate; 19-right transition plate; 191-a left transition plate; 20-left and right module transition connecting plate; 201-first left and right module transition connection board; 202-a second left and right module transition connection board; 203-third left and right module transition connection board.
Detailed Description
The technical solutions in the embodiments will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples without making any creative effort, shall fall within the protection scope of the present invention.
Unless otherwise defined, technical or scientific terms used in the embodiments of the present application should have the ordinary meaning as understood by those having ordinary skill in the art. The use of "first," "second," and similar words in this embodiment does not denote any order, quantity, or importance, but rather the terms "first," "second," and the like are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. "mounted," "connected," and "coupled" are to be construed broadly and may, for example, be fixedly coupled, detachably coupled, or integrally coupled; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. "Upper," "lower," "left," "right," "lateral," "vertical," and the like are used solely in relation to the orientation of the components in the figures, and these directional terms are relative terms that are used for descriptive and clarity purposes and that can vary accordingly depending on the orientation in which the components in the figures are placed.
It will be appreciated by those skilled in the art that the following examples are illustrative of the invention only and should not be taken as limiting the scope of the invention. The examples do not specify particular techniques or conditions, and are performed according to the techniques or conditions described in the literature in the art or according to the product specifications. The materials or equipment used are not indicated by manufacturers, and all are conventional products available by purchase.
As shown in fig. 1, the core set is a water jacket core set in which a water jacket core and a top cover core are designed as one body.
As shown in fig. 2, which isbase:Sub>A lower mold portion of the mold, and as shown in fig. 4, which isbase:Sub>A cross-sectional view of the lower mold portionbase:Sub>A-base:Sub>A of the mold. Wherein the lower case 3, the first left block 9, the second left block 91, the first right block 10, the second right block 101 form a water jacket portion of the core pack, and the shapes of the first left block 9 and the second left block 91, the first right block 10 and the second right block 101 are matched with each other. As shown in fig. 3, which is an upper mold part of the mold, the upper case 13 forms a top cover part of the core pack.
In the use process of the mold, the core sand in the cavity of the core assembly is filled through the sand shooting mechanism 4, and the core sand flattening at the back of the upper box body 13 is completed through the core pressing mechanism 5. After the core group is solidified, the first side pulling mechanism 14 and the second side pulling mechanism 141 are opened through the first guide mechanism 11 and the second guide mechanism 111, so that the water jacket part of the core group is separated from the left module and the right module, the whole core group is ejected out by a certain height through the core ejecting mechanism 2, the core taking position of the core taking robot is reached, and the core taking robot enters the next cycle working process after finishing core taking.
As shown in fig. 4, 5, and 6, the first guide mechanism 11 and the second guide mechanism 111 are composed of a support seat 15, a first seat 151, a second seat 152, a third seat 153, a first guide rod 16, and a second guide rod 161, wherein the first guide rod 16 and the second guide rod 161 pass through the first left module 9, the second left module 91, the first right module 10, and the second right module 101, so as to ensure that the first left module 9, the second left module 91, the first right module 10, and the second right module 101 are at the same horizontal height, and the first guide rod 16 and the second guide rod 161 are connected and fastened with the support seat 15, the first seat 151, the second seat 152, and the third seat 153 by a limit screw. Through guiding mechanism, in-process, ensure that first left module 9, second left module 91 and first right module 10, second right module 101 open and shut steadily. The supporting seat 15, the first seat 151, the second seat 152, and the third seat 153 are fixed to the lower bottom plate 6 by screws and positioning pins.
The first side drawing mechanism 14 and the second side drawing mechanism 141 are of conventional structures, and respectively comprise a right side drawing connecting plate 17, a left side drawing connecting plate 171, a side drawing connection transition plate 18, a first side drawing connection transition plate 181, a second side drawing connection transition plate 182, a third side drawing connection transition plate 183, a right transition plate 19, a left transition plate 191, a left module transition connecting plate 20, a left module transition connecting plate 201, a right module transition connecting plate 201, a left module transition connecting plate 202, a right module transition connecting plate 203, a left module transition connecting plate 203 and a right module transition connecting plate 203, and all the parts are connected and fastened through screws and positioning pins.
As shown in fig. 2, in order to ensure the sand core quality of the lower box body of the water jacket part, in the mold design process, the air exhaust plug installed from the back of the lower box body is designed at the position of the sand position weak position of the lower box body and the position unfavorable for mold air exhaust, and the sand core quality of the lower box body of the water jacket sand core is ensured by the measure.
As shown in fig. 3, in order to ensure the quality of the sand core of the whole water jacket part and reduce the core waste rate of the sand core, most of the nozzles are over against the water jacket sand core when the sand shooting mechanism 4 is arranged, so that the water jacket sand core part is ensured to be filled with enough core sand in the sand shooting process of the sand shooting mechanism.
First locating pin cover 8, second locating pin cover 81, third locating pin cover 82 are installed perpendicularly on lower mould bottom plate 6, and first locating pin 12, second locating pin 121, third locating pin 122 are installed perpendicularly on last mould bottom plate 7 for the location between lower mould part and the last mould part, guaranteed the positioning accuracy of mould in the use, further guaranteed the size precision of core group.
After the core making process and the die are used, the structure and the core taking procedure of the robot core taking clamp are optimized, the manual participation degree of the subsequent procedures is reduced, and the production efficiency is greatly improved.
When the core making process and the die are used for production, the invention comprises the following steps:
(1) The mould reaches a sand shooting station; (2) the sand shooting mechanism shoots sand and fills the cavity; (3) the core pressing mechanism presses the core sand in the cavity of the upper box body to be flat; (3) entering a curing period; (3) after the solidification is finished, opening the upper box body; (4) the mould reaches a core ejecting station; (5) the left module and the right module are pulled apart by the side pulling mechanism; (6) the lower core ejecting mechanism ejects the sand core to a specified height; (7) The core taking robot takes out the sand core and turns over 180 degrees, and the sand core is placed on the conveying roller way tray.
In conclusion, the core manufacturing process and the die have the following advantages:
1. after the water jacket sand core and the top cover sand core are designed into a whole, the minimum wall thickness of the water jacket part is favorably ensured;
2. in the process of processing the die, the processing of the water jacket type block is facilitated;
3. the structure of the coring fixture is simplified, the coring fixture is simplified from the original situation that the clamping of 4 sand cores is completed at the same time, and the situation that only 2 sand cores are required to be taken is simplified;
4. optimizing a coring program of the coring robot, if the coring robot is designed into two sand cores, the coring robot also needs to complete actions of placing top cover cores, assembling water jacket cores, clamping core groups, placing and the like, and the robot program is relatively complex; after the process is adopted, the two sand cores are designed into the integral sand core, the coring robot only completes coring and placing actions, and the program is simpler;
5. by adopting the process, the production efficiency is improved.
6. The cleaning workload of the top surface of the casting is reduced in the cleaning process.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. A core making method of a combined sand core is characterized by comprising the following steps: the combined sand core making mold is suitable for a combined sand core making mold, and comprises a bottom frame, a lower core jacking mechanism, a lower mold bottom plate, a sand core forming mechanism, an upper mold bottom plate, a sand shooting mechanism, an upper core jacking mechanism, an upper and lower positioning mechanism, a side pulling mechanism and a guide mechanism;
the lower die bottom plate is arranged on the bottom frame, and the lower core ejecting mechanism, the lower positioning mechanism, the side drawing mechanism and the guide mechanism are all fixed on the lower die bottom plate; the sand core forming mechanism is arranged between the upper die bottom plate and the lower die bottom plate;
the upper positioning mechanism is fixed on the upper die bottom plate;
the sand shooting mechanism and the upper core pushing mechanism are arranged on the upper die bottom plate;
the side pulling mechanism is fixed on the sand core forming mechanism; the side drawing mechanism comprises a first side drawing mechanism and a second side drawing mechanism;
the guide mechanism is fixed on the lower die base plate and penetrates through the sand core forming mechanism; wherein, the first and the second end of the pipe are connected with each other,
the mould reaches a sand shooting station; filling core sand in the cavity of the core group is completed through the sand shooting mechanism, and flattening of the core sand on the back of the upper box body is completed through the core pressing mechanism;
the combined sand core enters a curing period; after the solidification is finished, the upper box body is opened; the mould reaches a core ejecting station; the left module and the right module are pulled apart by the side pulling mechanism; the lower core ejecting mechanism ejects the sand core to a specified height;
after the core assembly is solidified, the first side pulling mechanism and the second side pulling mechanism are opened through the first guide mechanism and the second guide mechanism, so that the water jacket part of the core assembly is separated from the left module and the right module, the whole core assembly is ejected out by a certain height through the core ejecting mechanism to reach a core taking position of the core taking robot, and the core taking robot enters the next cycle working process after core taking is finished;
the core taking robot takes out the sand core and turns over 180 degrees, and the sand core is placed on the conveying roller way tray.
2. The method of claim 1, wherein: the sand core forming mechanism comprises a lower box body, a left module, a right module and an upper box body; the left module and the right module are connected with the left side and the right side drawing mechanisms, the lower box body is fixed on the lower die bottom plate, and the upper box body is fixed on the upper die bottom plate; the shapes of the lower box body, the left module, the right module and the upper box body are respectively the same as the shapes of the corresponding parts of the combined sand core.
3. The method of claim 1, wherein: the upper positioning mechanism comprises a plurality of positioning pins, and the lower positioning mechanism comprises a plurality of pin sleeves matched with the positioning pins.
4. The method of claim 2, wherein: the lower die bottom plate is fixed on the bottom frame through screws, and meanwhile, the lower box body, the left module, the right module, the lower positioning mechanism, the side drawing mechanism and the guide mechanism are all fixed on the lower die bottom plate through screws; the upper box body and the upper positioning mechanism are fixed on the upper die bottom plate through screws.
5. The method of claim 1, wherein: the lower core ejecting mechanism is fixed on the lower die bottom plate through screws, so that the sand core is separated from the die, and the required height of the robot for coring is achieved.
6. The method of claim 1, wherein: the side pumping mechanism is guided by the guide mechanism, so that the left module, the right module and the combined sand core are separated.
7. The method of claim 2, wherein: an air vent plug is arranged at the position of the lower box body, with the smaller sand core sand position, on the back surface.
8. The method of claim 2, wherein: most of the injection nozzles of the sand injection mechanism are over against the water jacket sand core.
9. A combination psammitolite which characterized in that: the method of any one of claims 1 to 8, wherein the water jacketed sand core and the top cover sand core are formed in one piece by the mold to form a unitary sand core.
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| CN202110775535.6A CN113579166B (en) | 2021-07-08 | 2021-07-08 | Combined sand core and core making mold and method thereof |
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| CN202110775535.6A CN113579166B (en) | 2021-07-08 | 2021-07-08 | Combined sand core and core making mold and method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201552279U (en) * | 2009-07-30 | 2010-08-18 | 吴克平 | Integral core making mould of diesel engine cylinder cover water jacket sand core |
| CN201543775U (en) * | 2009-11-13 | 2010-08-11 | 广西玉柴机器股份有限公司 | Casting mold of water jacket core of cylinder cover |
| CN102626772B (en) * | 2012-03-26 | 2013-10-02 | 苏州明志科技有限公司 | On-line core making technology and device |
| CN103586417B (en) * | 2013-11-05 | 2015-06-24 | 华东泰克西汽车铸造有限公司 | Automatic hot-glue core assembling production technology for basic water jacket core of automobile engine cylinder block |
| CN104624955A (en) * | 2014-12-19 | 2015-05-20 | 中国南方航空工业(集团)有限公司 | Forming mold for sand core of aero-engine integral blade and forming method of forming mold |
| CN206882723U (en) * | 2017-07-13 | 2018-01-16 | 广西玉柴机器股份有限公司 | The quick cast core of integrated cylinder cap |
| CN108889911B (en) * | 2018-07-27 | 2020-08-07 | 昆明云内动力股份有限公司 | Robot automatic sand core placing tray suitable for collinear production of cylinder body, cylinder cover and sand core |
| CN112496273A (en) * | 2020-05-22 | 2021-03-16 | 苏州明志科技股份有限公司 | Sand core assembling system and sand core assembling method |
| CN113070453B (en) * | 2021-03-10 | 2022-08-23 | 慈溪汇丽机电股份有限公司 | Casting method of gear box casting |
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