CN112296258A - Small motor casing sand mold assembling process and assembling tool - Google Patents
Small motor casing sand mold assembling process and assembling tool Download PDFInfo
- Publication number
- CN112296258A CN112296258A CN202011195440.9A CN202011195440A CN112296258A CN 112296258 A CN112296258 A CN 112296258A CN 202011195440 A CN202011195440 A CN 202011195440A CN 112296258 A CN112296258 A CN 112296258A
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- CN
- China
- Prior art keywords
- sand mold
- motor casing
- sand
- small motor
- assembling
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
- B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
- B22C1/20—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents
- B22C1/22—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of resins or rosins
- B22C1/2233—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of resins or rosins obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- B22C1/224—Furan polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C21/00—Flasks; Accessories therefor
- B22C21/12—Accessories
- B22C21/14—Accessories for reinforcing or securing moulding materials or cores, e.g. gaggers, chaplets, pins, bars
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C3/00—Selection of compositions for coating the surfaces of moulds, cores, or patterns
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
- B22C9/24—Moulds for peculiarly-shaped castings for hollow articles
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/14—Casings; Enclosures; Supports
Abstract
The invention relates to the technical field of sand casting molds, in particular to a small motor casing sand mold assembling process and assembling tooling. The molding process of the small motor casing sand mold comprises the following steps: (1) molding by adopting resin sand to obtain a sand mold; (2) molding the sand mold after flow coating of refractory coating, and fastening by using a molding tool; (3) and (4) casting the fastened sand mold, and then performing backfire to obtain the sand mold casting mold for the small motor casing. The small motor casing sand mold assembling process is simple to operate, can prevent sand mold from expanding, and is high in size precision and yield of produced castings; the invention also provides a combined type tool thereof, which has the advantages of simplified shape and structure, high strength, strong adaptability and low casting cost.
Description
Technical Field
The invention relates to the technical field of sand casting molds, in particular to a small motor casing sand mold assembling process and assembling tooling.
Background
At present, a motor casing sand mold assembling process used in common sand mold casting generally adopts a tool with the same size as a sand core main body to assemble a mold, and the traditional casting sand mold assembling process is easily limited by the size of a sand mold when the tool is used, so that the defects of material waste, large tool input and the like are caused. The sand mold assembling process is easy to cause large investment and waste when the size of a sand mold changes and in the using process; some sand molds are large and have small tools, and some sand molds are small and have large tools, so that the sand mold assembling process of various models is difficult to meet.
Patent CN201120521674.8 discloses a motor casing sand mould fastener, including the fastening frame that encloses by multistage rectangular pipe end to end and the bolt of fastening frame periphery equipartition and the nut of joining in marriage the dress, install the angle bar respectively in four right angles departments of fastening frame inner circle, the angle bar outside hookup bolt one end. The shape and size of the fastening frame can be adjusted according to the specific shape of the sand mold. This fastener should need set up the fastening frame in the angle bar outside, and fix the fixed mode on the fastening frame with the angle bar through the bolt and be inconvenient occasionally in the operation.
Disclosure of Invention
The invention aims to provide a small motor casing sand mold assembling process which is simple to operate, can prevent sand molds from expanding, and is high in size precision and yield of produced castings; the invention also provides a combined type tool thereof, which has the advantages of simplified shape and structure, high strength, strong adaptability and low casting cost.
The invention relates to a molding process of a sand mold of a miniature motor casing, which comprises the following steps:
(1) molding by adopting resin sand to obtain a sand mold;
(2) molding the sand mold after flow coating of refractory coating, and fastening by using a molding tool;
(3) and (4) casting the fastened sand mold, and then performing backfire to obtain the sand mold casting mold for the small motor casing.
In the step (1), the resin sand consists of sand, furan resin and a curing agent, wherein the mass of the furan resin is 0.9-1.1% of that of the sand, and the mass of the curing agent is 20-60% of that of the furan resin.
The curing agent is a conventional curing agent for resin sand molding.
The resin sand molding method comprises the following steps: adding furan resin and a curing agent in a formula amount into sand, mixing by a sand mixer, and filling into a mold for curing. Wherein the addition amount of the furan resin and the curing agent is adjusted according to different air temperatures.
In the step (2), the refractory coating is an alcohol-based graphite coating.
The molding tool used in the molding process of the sand mold of the small motor casing comprises a fixed angle iron, a fastening bolt and a fastening nut, wherein the outer side surface of the fixed angle iron is fixedly connected with a fixed plate, and the fixed plate is provided with a fastening hole.
The fixed angle iron is formed by fixedly connecting two iron plates at right angles, and the height of the fixed angle iron is the same as that of the sand mold.
Preferably, the fixed angle iron is formed by welding two iron plates at right angles, and the fixed plates are welded on two outer side surfaces of the fixed angle iron.
The number of the fixed angle irons is 4, and the fixed angle irons are distributed and arranged in a rectangular or square shape.
And the fastening bolt penetrates through the fastening hole to fix the two adjacent fixed angle irons.
The length of the fastening bolt is adjusted according to the size of the sand mold, the universal effect of various sand mold sizes is achieved, and the fastening bolt can be repeatedly used in the same type of sand molds.
The steel plate and the bolt which are used by the combined tool are common and universal.
The operation steps of the assembling type tool are as follows:
(1) assembling the sand mold to be assembled according to the process;
(2) placing the assembled sand mold among 4 pieces of fixed angle iron;
(3) and (4) passing the fastening bolt through the fastening holes of the two adjacent fixed angle irons and fastening the fastening bolt in place through the fastening nut.
The sand mold assembling process can be applied to the same resin sand casting process as a resin sand mold assembling process.
Compared with the prior art, the invention has the following beneficial effects:
(1) the small motor casing sand mold assembling process is simple to operate, can prevent sand mold from expanding, and is high in size precision and yield of produced castings;
(2) the small motor casing sand mold assembling tool has the advantages of simplified shape and structure, simplicity in manufacturing, strong adaptability and low casting cost, is beneficial to accurately fixing a sand core, enhances the strength of a sand mold, can prevent a casting from being choked due to metal liquid entering during pouring, plays a role in protecting the sand mold, and can be repeatedly used.
Drawings
FIG. 1 is a schematic top view of a small motor casing sand molding assembly fixture according to the present invention;
FIG. 2 is a schematic structural diagram of a front view of the small motor casing sand molding assembly fixture;
in the figure: 1. fixing angle iron; 2. fastening a nut; 3. fastening a bolt; 4. a fastening hole; 5. and (7) fixing the plate.
Detailed Description
Example 1
As shown in fig. 1-2, the small motor casing sand mold assembly fixture comprises a fixed angle iron 1, a fastening bolt 3 and a fastening nut 2, wherein a fixing plate 5 is fixedly connected to the outer side surface of the fixed angle iron 1, and a fastening hole 4 is formed in the fixing plate 5.
The fixed angle iron 1 is formed by welding two iron plates at right angles, and the height of the fixed angle iron 1 is the same as that of the sand mold.
The upper end and the lower end of the outer side surface of the iron plate of the fixed angle iron 1 are respectively welded with a fixed plate 5.
The number of the fixed angle irons 1 is 4, and the fixed angle irons are arranged in a rectangular or square distribution mode.
The fastening bolt 3 passes through the fastening hole 4 to fix the two adjacent fixing angle irons 1.
The length of the fastening bolt 3 is adjusted according to the size of the sand mould.
The steel plate and the bolt which are used by the combined tool are common and universal.
Example 2
The small motor casing sand mold assembling process adopting the assembling tool in the embodiment 1 comprises the following steps:
(1) adding furan resin accounting for 1 percent of the mass of the raw sand and a curing agent accounting for 40 percent of the mass of the furan resin into the raw sand, mixing the materials by a sand mixer, filling the mixture into a mold, and curing to obtain a sand mold;
(2) after the sand mold is coated with the alcohol-based graphite coating, the sand mold is assembled according to the process, the assembled sand mold is placed between 4 fixed angle irons, fastening bolts penetrate through fastening holes of two adjacent fixed angle irons and are fastened in place through fastening nuts;
(3) and (4) casting the fastened sand mold, and then performing backfire to obtain the sand mold casting mold for the small motor casing.
The molding process is simple to operate, the sand core is stably fixed in the molding process of the sand mold, and the size precision and the yield of the produced casting are high.
Example 3
The small motor casing sand mold assembling process adopting the assembling tool in the embodiment 1 comprises the following steps:
(1) adding furan resin accounting for 1.1 percent of the mass of the raw sand and a curing agent accounting for 60 percent of the mass of the furan resin into the raw sand, mixing the materials by a sand mixer, filling the mixture into a mold, and curing to obtain a sand mold;
(2) after the sand mold is coated with the alcohol-based graphite coating, the sand mold is assembled according to the process, the assembled sand mold is placed between 4 fixed angle irons, fastening bolts penetrate through fastening holes of two adjacent fixed angle irons and are fastened in place through fastening nuts;
(3) and (4) casting the fastened sand mold, and then performing backfire to obtain the sand mold casting mold for the small motor casing.
The molding process is simple to operate, the sand core is stably fixed in the molding process of the sand mold, and the size precision and the yield of the produced casting are high.
Example 4
The small motor casing sand mold assembling process adopting the assembling tool in the embodiment 1 comprises the following steps:
(1) adding furan resin accounting for 0.9 percent of the mass of the raw sand and a curing agent accounting for 20 percent of the mass of the furan resin into the raw sand, mixing the materials by a sand mixer, filling the mixture into a mold, and curing to obtain a sand mold;
(2) after the sand mold is coated with the alcohol-based graphite coating, the sand mold is assembled according to the process, the assembled sand mold is placed between 4 fixed angle irons, fastening bolts penetrate through fastening holes of two adjacent fixed angle irons and are fastened in place through fastening nuts;
(3) and (4) casting the fastened sand mold, and then performing backfire to obtain the sand mold casting mold for the small motor casing.
The molding process is simple to operate, the sand core is stably fixed in the molding process of the sand mold, and the size precision and the yield of the produced casting are high.
Claims (9)
1. A molding process of a sand mold of a small motor casing is characterized in that: the method comprises the following steps:
(1) molding by adopting resin sand to obtain a sand mold;
(2) molding the sand mold after flow coating of refractory coating, and fastening by using a molding tool;
(3) and (4) casting the fastened sand mold, and then performing backfire to obtain the sand mold casting mold for the small motor casing.
2. The molding process of the small motor casing sand mold according to claim 1, characterized in that: in the step (1), the resin sand consists of sand, furan resin and a curing agent, wherein the mass of the furan resin is 0.9-1.1% of that of the sand, and the mass of the curing agent is 20-60% of that of the furan resin.
3. The molding process of the small motor casing sand mold according to claim 1, characterized in that: in the step (2), the refractory coating is an alcohol-based graphite coating.
4. A molding tool for the molding process of the sand mold of the miniature motor casing according to any one of claims 1 to 3, which is characterized in that: the angle iron fixing device comprises fixing angle iron (1), a fastening bolt (3) and a fastening nut (2), wherein a fixing plate (5) is fixedly connected to the outer side face of the fixing angle iron (1), and a fastening hole (4) is formed in the fixing plate (5).
5. The assembling tool for the assembling process of the small motor casing sand mold according to claim 4, is characterized in that: the fixed angle iron (1) is formed by fixedly connecting two iron plates at a right angle, and the height of the fixed angle iron (1) is the same as that of the sand mold.
6. The assembling tool for the assembling process of the small motor casing sand mold according to claim 5, is characterized in that: the upper end and the lower end of the outer side surface of the iron plate of the fixed angle iron (1) are respectively and fixedly connected with a fixed plate (5).
7. The assembling tool for the assembling process of the small motor casing sand mold according to claim 4, is characterized in that: the number of the fixed angle irons (1) is 4, and the fixed angle irons are distributed and arranged in a rectangular or square shape.
8. The assembling tool for the assembling process of the small motor casing sand mold according to claim 4, is characterized in that: the fastening bolt (3) passes through the fastening hole (4).
9. The assembling tool for the assembling process of the small motor casing sand mold according to claim 4, is characterized in that: the operation steps of the assembling type tool are as follows:
(1) assembling the sand mold to be assembled according to the process;
(2) placing the assembled sand mold among 4 fixed angle irons (1);
(3) and (3) passing the fastening bolt (3) through the fastening holes (4) of two adjacent fixing angle irons (1) and fastening the fastening bolt in place through the fastening nut (2).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211022833.9A CN115351230A (en) | 2020-10-30 | 2020-10-30 | Small motor casing sand mold assembling process and assembling tool |
| CN202011195440.9A CN112296258A (en) | 2020-10-30 | 2020-10-30 | Small motor casing sand mold assembling process and assembling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011195440.9A CN112296258A (en) | 2020-10-30 | 2020-10-30 | Small motor casing sand mold assembling process and assembling tool |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211022833.9A Division CN115351230A (en) | 2020-10-30 | 2020-10-30 | Small motor casing sand mold assembling process and assembling tool |
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| Publication Number | Publication Date |
|---|---|
| CN112296258A true CN112296258A (en) | 2021-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211022833.9A Pending CN115351230A (en) | 2020-10-30 | 2020-10-30 | Small motor casing sand mold assembling process and assembling tool |
| CN202011195440.9A Pending CN112296258A (en) | 2020-10-30 | 2020-10-30 | Small motor casing sand mold assembling process and assembling tool |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211022833.9A Pending CN115351230A (en) | 2020-10-30 | 2020-10-30 | Small motor casing sand mold assembling process and assembling tool |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040092708A (en) * | 2003-04-25 | 2004-11-04 | 주식회사 포스코 | Apparatus for remaining broth and ingot treatment in continuous casting |
| CN202395625U (en) * | 2011-12-14 | 2012-08-22 | 山东省源通机械股份有限公司 | Sand mould fastening device of motor housing |
| CN202639233U (en) * | 2012-05-22 | 2013-01-02 | 赵一平 | Molding mold for motor shell casting mold |
| CN103624220A (en) * | 2013-12-05 | 2014-03-12 | 山东省源通机械股份有限公司 | Production technology of explosion-proof and corrosion-proof motor casing |
| CN106130275A (en) * | 2016-06-28 | 2016-11-16 | 无锡新大力电机有限公司 | A kind of anti-explosion electric casing processing technique |
-
2020
- 2020-10-30 CN CN202211022833.9A patent/CN115351230A/en active Pending
- 2020-10-30 CN CN202011195440.9A patent/CN112296258A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040092708A (en) * | 2003-04-25 | 2004-11-04 | 주식회사 포스코 | Apparatus for remaining broth and ingot treatment in continuous casting |
| CN202395625U (en) * | 2011-12-14 | 2012-08-22 | 山东省源通机械股份有限公司 | Sand mould fastening device of motor housing |
| CN202639233U (en) * | 2012-05-22 | 2013-01-02 | 赵一平 | Molding mold for motor shell casting mold |
| CN103624220A (en) * | 2013-12-05 | 2014-03-12 | 山东省源通机械股份有限公司 | Production technology of explosion-proof and corrosion-proof motor casing |
| CN106130275A (en) * | 2016-06-28 | 2016-11-16 | 无锡新大力电机有限公司 | A kind of anti-explosion electric casing processing technique |
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| Publication number | Publication date |
|---|---|
| CN115351230A (en) | 2022-11-18 |
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Application publication date: 20210202 |