CN110560644A - Manufacturing method of mold for cold box core shooting - Google Patents
Manufacturing method of mold for cold box core shooting Download PDFInfo
- Publication number
- CN110560644A CN110560644A CN201910896776.9A CN201910896776A CN110560644A CN 110560644 A CN110560644 A CN 110560644A CN 201910896776 A CN201910896776 A CN 201910896776A CN 110560644 A CN110560644 A CN 110560644A
- Authority
- CN
- China
- Prior art keywords
- mold
- mold frame
- cold box
- universal metal
- shooting
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Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
A manufacturing method of a mold for cold box core shooting belongs to the technical field of cold box core shooting and is used for solving the problem of high production cost caused by the fact that each product of the cold box core shooting needs one set of mold; the product pattern is matched in the universal metal mold frame and used for forming the structure of the product. In order to enable the universal metal mold frame to be adaptive to different products, the outer contour of the universal metal mold frame is set to be consistent with the size of the maximum specification mold frame applicable to the core shooting machine, replaceability of the universal metal mold frame is improved, and standardization degree of the universal metal mold frame is improved. The invention realizes that only one universal metal die frame is needed for one core shooter, thereby reducing the variety and the number of the dies and reducing the manufacturing cost of the dies.
Description
Technical Field
the invention relates to the technical field of cold box core shooting, in particular to a mold for cold box core shooting.
Background
The cold box core shooting process technology has the advantages of high production efficiency, low cost, high sand core strength, high dimensional precision, good collapsibility and the like, and is widely applied to the high-complexity and high-quality casting industry at present.
In the traditional manufacturing of cold-box core shooting moulds for casting, each product needs to be manufactured with one set of mould separately, and even each different sand core needs to be manufactured with one set of mould separately or in combination; the cold core box mold is complex in structure and comprises an upper cold core box, a lower cold core box, a sand shooting plate, a sand shooting nozzle, an upper top template and a lower top template, wherein the upper cold core box is provided with a plurality of sand shooting holes and positioning holes, and the lower cold core box is provided with positioning pins butted with the positioning holes of the upper cold core box. The cold-box core-shooting metal mold has a complex structure compared with molds (wood molds, plastic molds and metal molds) for hand molding, the production and manufacturing cost is 1-3 times higher, and the design and manufacturing period of the molds is 2-3 times longer; the proportion of the mold cost to the whole casting production cost is high, the number of casting molds is correspondingly increased along with the increase of casting types, and the mold inventory cost is greatly increased.
The foundry industry is also developed at high efficiency and high quality, the updating and upgrading of casting products are faster, the whole life cycle of the research, development and manufacturing of the casting products is continuously shortened, the casting products have long lines and large batches of orders and are very limited, which is one of the important reasons that the large-capacity core shooting production line is rarely constructed by enterprise investment at present, the development of the cold box core shooting technology is seriously restricted, and the industrialized development of the cold box core shooting automatic line is hindered.
Disclosure of Invention
in view of the problems of high production cost and incapability of industrialization caused by the complexity of the cold box core shooting mold, a manufacturing method of the cold box core shooting mold is needed, and the manufacturing method realizes the generalization of the cold box core shooting mold by manufacturing a universal metal mold frame and a nested product pattern so as to reduce the production cost.
A manufacturing method of a mold for cold box core shooting divides the mold for cold box core shooting into a universal metal mold frame and a product pattern, wherein the periphery of the universal metal mold frame is matched with the cold box core shooting machine; the product pattern is matched in the universal metal mold frame and used for forming the structure of the product.
The manufacturing method of the universal metal mold frame comprises the following steps:
1) In order to enable the universal metal mold frame to be suitable for different products, the outer contour of the universal metal mold frame is set to be consistent with the size of a maximum specification mold frame applicable to a core shooting machine;
2) The universal metal mold frame is provided with an upper mold frame and a lower mold frame, and the upper mold frame is provided with a nozzle, an ejector rod, an amine blowing hole, an exhaust hole, a fastening hole and the like which are matched with the core shooting machine and the core shooting process; the lower die frame is provided with a sprue, a cross runner, an air outlet overflow channel and the like in fixed proportion, so that the replaceability of the universal metal die frame is further improved, and the standardization degree of the universal metal die frame is improved.
preferably, in order to facilitate the cooperation of the universal metal mold frame and equipment and a tooling fixture on a production line, an adaptive transfer structure is arranged on the universal metal mold frame, such as a universal chuck and a core assembly reference.
Preferably, in order to improve the universality of the upper mold frame and the lower mold frame, the apertures of the various holes arranged on the upper mold frame and the lower mold frame are the same.
Preferably, for different products, the redundant injection nozzles, the ejector rods, the amine blowing holes, the exhaust holes, the fastening holes and the like can be plugged by matched plugs, so that the core injection efficiency is improved.
preferably, in order to improve the universality of the injection nozzle on the upper die frame, the outer diameter of the injection nozzle is set to be the same size, and only the inner diameter of the injection nozzle is changed, so that the injection nozzle with different apertures is convenient to replace, and the universality of the upper die frame is further improved.
Preferably, in order to reduce the number of product patterns as much as possible and improve the precision of the product patterns, the product patterns are made by 3D printing, and may be sand molds subjected to surface strengthening treatment or mold molds having certain strength. Thereby avoiding the problems of long production period, high production cost, environmental pollution and the like caused by using the wood mould.
Preferably, in order to improve the consistency or universality of the product pattern and the universal metal mold frame, improve the matching accuracy and reduce the shape of the universal metal mold frame, the product pattern is designed into a modular assembly mode, namely the outer contour of the product pattern is designed in a consistent manner.
Preferably, in order to enable the product pattern to be firmly matched in the universal metal mold frame, a reserved hole of the product pattern is further formed in the universal metal mold frame, so that the product pattern is embedded in the reserved hole.
preferably, the ingate and riser system is provided as a split modular structure, thereby ensuring the high efficiency and convenience of replacing different products, and realizing that different products can be produced.
The invention has the beneficial effects that: the mold for cold box core shooting is divided into the universal metal mold frame and the product pattern, so that the universality of the mold for cold box core shooting is greatly improved, namely the universal metal mold can be suitable for various products.
Drawings
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Detailed Description
In order to more clearly illustrate the technical solutions of the present invention, the following embodiments will be described in detail, and it is obvious that the following embodiments are exemplary embodiments of the present invention, and it will be obvious to those skilled in the art that other embodiments can be obtained according to the present embodiments without inventive labor.
The manufacturing method of the mold for cold core box core shooting is suitable for a pouring channel system mainly based on a serial pouring process design mode, a product with a symmetrical structure and the same product of multiple products in one type.
An embodiment of the manufacturing method of the mold for cold box core shooting comprises the following steps:
Firstly, dividing a mold for cold box core shooting into a universal metal mold frame and a product pattern, wherein the periphery of the universal metal mold frame is matched with the cold box core shooting machine; the product pattern is matched in the universal metal mold frame and is used for forming the structure of the product;
Secondly, dividing the universal metal mold frame into an upper mold frame and a lower mold frame, wherein the outer contours of the upper mold frame and the lower mold frame are set to be consistent with the specification and the size of the maximum mold frame applicable to a core shooting machine used for production, so that the universality of the upper mold frame and the lower mold frame is realized, the number of molds is reduced, and the production and manufacturing cost is reduced;
Thirdly, uniformly arranging structures such as a nozzle, a mandril, an amine blowing hole, an exhaust hole, a fastening hole and the like on the upper die frame, wherein the nozzle, the mandril, the amine blowing hole, the exhaust hole and the fastening hole are required to be arranged at different positions on different products, and the unnecessary nozzle, the mandril, the amine blowing hole, the exhaust hole and the fastening hole are plugged; the injection nozzle, the ejector rod, the amine blowing hole, the exhaust hole and the fastening hole are arranged corresponding to the plugs, and the injection nozzle, the ejector rod, the amine blowing hole, the exhaust hole and the fastening hole which do not need to work are plugged, so that the personalized requirement of the upper die frame is realized;
Fourthly, a sprue, a cross gate and an air outlet overflow channel with fixed proportion are arranged on the lower die frame, so that the universality of the lower die frame is improved; an inner pouring channel is reserved for carrying out personalized design according to different products;
Fifthly, the product patterns are set to be in a modular structure, namely the outer contours of the product patterns are consistent, so that the phenomenon that the universality of the universal metal mold frame is reduced due to different structures of the universal metal mold frame caused by different product patterns is avoided; meanwhile, the modularized product pattern also ensures the integrity of the product structure, and avoids local modification, subsidy and the like;
Sixthly, in order to make the general metal mold frame suitable for the uniformity of production, a general chuck for transferring is provided outside the general metal mold frame, and a core assembly reference for core assembly is further provided, thereby improving the standardization of the general metal mold frame.
As an improvement of this embodiment, will it sets up to the structure that the external diameter is the same to penetrate the mouth, when needs different mouth apertures of penetrating, only need change for the internal diameter satisfy the demand penetrate the mouth can to further promoted go up the commonality of die frame, avoided leading to the increase of last die frame mould making quantity because of penetrating the individuation of mouth. Meanwhile, the length of the nozzle is set according to the shortest size, and when the nozzle needs to be longer, only corresponding replacement is needed.
and in the same way, the ejector rod is designed.
As an improvement of this embodiment, in order to improve the manufacturing accuracy and speed of the product pattern and reduce the manufacturing cost, the product pattern may be manufactured by using a 3D printing technology, for example, the product pattern may be a sand mold manufactured by using a 3DP process, and the surface of the sand mold is subjected to a strengthening treatment, so that the sand mold can meet the strength requirement of a cold box core shooting process; as another example, the product pattern may also be a mold made by a melt extrusion process, or the like.
The mold for core shooting of the cold core box designed in the embodiment realizes that one core shooting machine can realize core shooting, core making and molding of different products only by the universal metal mold frame and matching with product patterns of different products, and realizes medium and small batch production of core shooting processes.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (8)
1. The manufacturing method of the mold for cold box core shooting is characterized in that the mold for cold box core shooting is divided into a universal metal mold frame and a product pattern, and the periphery of the universal metal mold frame is matched with the cold box core shooting machine; the product pattern is matched in the universal metal mold frame and used for forming the structure of the product.
2. The method for manufacturing the mold for cold box core shooting according to claim 1, wherein the method for manufacturing the universal metal mold frame comprises the following steps:
designing a standardized universal metal mold frame, wherein the outer contour of the universal metal mold frame is consistent with the size of the maximum specification mold frame which can be accommodated by the applicable core shooting machine;
The universal metal mold frame is divided into an upper mold frame and a lower mold frame, and a plurality of injection nozzles, ejector rods, amine blowing holes, exhaust holes and fastening holes are uniformly arranged on the upper mold frame; and a sprue, a cross runner and an air outlet overflow channel with fixed proportion are arranged on the lower die frame.
3. The method of making a mold for cold box core shooting as in claim 1, wherein the universal metal form is provided with a compliant transfer structure.
4. The method of making a mold for cold box shooting as in claim 2 wherein the nozzles are of the same outside diameter and variable inside diameter configuration.
5. The method of making a mold for cold box shooting as in claim 1, wherein the product pattern is of a modular construction with a uniform outer contour.
6. The method of making a mold for cold box shooting as in claim 5 wherein the product pattern is made by 3D printing.
7. The method of making a mold for cold box shooting as in claim 6 wherein the product pattern is a sand mold made by the 3DP process.
8. The method of making a mold for a cold-box shooting core of claim 6, wherein the product pattern is a mold made by a melt extrusion process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910896776.9A CN110560644A (en) | 2019-09-23 | 2019-09-23 | Manufacturing method of mold for cold box core shooting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910896776.9A CN110560644A (en) | 2019-09-23 | 2019-09-23 | Manufacturing method of mold for cold box core shooting |
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| Publication Number | Publication Date |
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| CN110560644A true CN110560644A (en) | 2019-12-13 |
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| CN201910896776.9A Pending CN110560644A (en) | 2019-09-23 | 2019-09-23 | Manufacturing method of mold for cold box core shooting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111331074A (en) * | 2020-04-07 | 2020-06-26 | 马鞍山博越精密机械有限公司 | Automobile brake caliper support blank machining process |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1502157A1 (en) * | 1987-03-18 | 1989-08-23 | Проектно-Конструкторский Технологический Институт Всесоюзного Промышленного Объединения Союзуглемаша | Core box |
| US5368087A (en) * | 1993-12-27 | 1994-11-29 | Ford Motor Company | Hot box core making apparatus |
| US5715885A (en) * | 1995-12-29 | 1998-02-10 | Georg Fischer Disa, Inc. | Apparatus and method for cleaning core box vents |
| CN204685954U (en) * | 2015-06-08 | 2015-10-07 | 宁波高盛模具制造有限公司 | For the preparation of the water cavity passage core cold-box of diesel engine mould |
| CN205914702U (en) * | 2016-08-24 | 2017-02-01 | 宁夏朗盛精密制造技术有限公司 | Can make up, changeable modularization, from locking -type core box |
| CN207668437U (en) * | 2018-01-02 | 2018-07-31 | 十堰平顺工贸有限公司 | A kind of aluminium alloy valve deck casting core box |
| CN209255757U (en) * | 2018-12-26 | 2019-08-16 | 聊城新泺机械有限公司 | A kind of sand core hot core box |
-
2019
- 2019-09-23 CN CN201910896776.9A patent/CN110560644A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1502157A1 (en) * | 1987-03-18 | 1989-08-23 | Проектно-Конструкторский Технологический Институт Всесоюзного Промышленного Объединения Союзуглемаша | Core box |
| US5368087A (en) * | 1993-12-27 | 1994-11-29 | Ford Motor Company | Hot box core making apparatus |
| US5715885A (en) * | 1995-12-29 | 1998-02-10 | Georg Fischer Disa, Inc. | Apparatus and method for cleaning core box vents |
| CN204685954U (en) * | 2015-06-08 | 2015-10-07 | 宁波高盛模具制造有限公司 | For the preparation of the water cavity passage core cold-box of diesel engine mould |
| CN205914702U (en) * | 2016-08-24 | 2017-02-01 | 宁夏朗盛精密制造技术有限公司 | Can make up, changeable modularization, from locking -type core box |
| CN207668437U (en) * | 2018-01-02 | 2018-07-31 | 十堰平顺工贸有限公司 | A kind of aluminium alloy valve deck casting core box |
| CN209255757U (en) * | 2018-12-26 | 2019-08-16 | 聊城新泺机械有限公司 | A kind of sand core hot core box |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111331074A (en) * | 2020-04-07 | 2020-06-26 | 马鞍山博越精密机械有限公司 | Automobile brake caliper support blank machining process |
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Application publication date: 20191213 |
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| RJ01 | Rejection of invention patent application after publication |