CN218798921U - Precoated sand outer mold pair die for angle plug door body and straight end plug door body - Google Patents
Precoated sand outer mold pair die for angle plug door body and straight end plug door body Download PDFInfo
- Publication number
- CN218798921U CN218798921U CN202222627247.9U CN202222627247U CN218798921U CN 218798921 U CN218798921 U CN 218798921U CN 202222627247 U CN202222627247 U CN 202222627247U CN 218798921 U CN218798921 U CN 218798921U
- Authority
- CN
- China
- Prior art keywords
- die
- mold
- precoated sand
- wedge
- forming
- Prior art date
- 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.)
- Active
Links
Images
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The utility model provides a tectorial membrane sand external mold of dog-ear cock body and straight end cock body is mould in pairs belongs to metal casting technical field. The sand-precoated outer mold half body forming die comprises a first precoated sand outer mold half body forming die and a second precoated sand outer mold half body forming die, wherein a plurality of wedge-shaped positioning blocks I are arranged on the outer edge of a male die I, a plurality of positioning openings I matched with the wedge-shaped positioning blocks I are arranged on the outer edge of a female die I, and the head of each wedge-shaped positioning block I is provided with a first sand shooting groove penetrating through a first precoated sand outer mold half body forming cavity; the first male die is provided with a sprue gate molding convex column and a cold shrinkage Kong Yuliu convex column; the outer edge of the male die II is provided with a plurality of wedge-shaped positioning blocks II, the outer edge of the female die II is provided with a plurality of positioning openings II matched with the wedge-shaped positioning blocks II, and the head of each wedge-shaped positioning block II is provided with a sand shooting groove II penetrating through a second precoated sand outer die half forming cavity; the second male die is provided with a converging sinking port forming convex cylinder corresponding to the sprue gate forming convex cylinder and a cold-shrinking sinking groove forming convex cylinder corresponding to the cold-shrinking Kong Yuliu convex cylinder. The utility model has the advantages of high casting efficiency.
Description
Technical Field
The utility model belongs to the technical field of the metal casting, a tectorial membrane sand external mold of dog-ear cock body and straight end cock body is mould in pairs is related to.
Background
In the railway rail car braking system, the bevel control valve is a front-end main control valve of a braking system air circuit, and according to the design requirement of a circuit and the model of a locomotive, the bevel control valve is sometimes adopted and sometimes required, and the bevel plug door body and the straight-end plug door body are valve body metal parts of the bevel control valve and the right-angle control valve.
Under the influence of industrial characteristics, each railway bureau has strict requirements on suppliers of accessories and even has clear limitation on preparation processes of product accessories, so that each metal accessory in a railway car braking system is prepared by using a wax mold casting method all the time, objectively, the essential requirements of a purchasing party only meet the performance of design requirements for each index of a product, and the traditional wax mold casting has higher cost and lower efficiency. In the industry, the company firstly adopts precoated sand casting to parts such as a dust collector body, a derailing valve body, a straight end plug door body, a bevel plug door body and the like in a braking system of a rail car.
The precoated sand casting is to prepare a precoated sand mold firstly, and comprises a precoated sand outer mold and an inner mold, then the inner mold and the outer mold are assembled, metal liquid is filled into reserved spaces of the inner mold and the outer mold, and after metal is cooled, the precoated sand is decomposed to separate the precoated sand from a product.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the above-mentioned problem that exists to current technique, provide a tectorial membrane sand external mold of dog-ear cock body and straight end cock body and to mould in pairs, the utility model aims to solve the technical problem how to improve production efficiency.
The purpose of the utility model can be realized by the following technical proposal: the precoated sand outer mold paired molds of the bevel plug door body and the straight-end plug door body are characterized by comprising a precoated sand outer mold half body forming mold I and a precoated sand outer mold half body forming mold II, wherein the precoated sand outer mold half body forming mold I comprises a female mold I and a male mold I, a precoated sand outer mold half body forming cavity I is formed between the female mold I and the male mold I, a plurality of wedge-shaped positioning blocks I are arranged on the outer edge of the male mold I, a plurality of positioning openings I matched with the wedge-shaped positioning blocks I are arranged on the outer edge of the female mold I, and a sand shooting groove I penetrating through the precoated sand outer mold half body forming cavity I is arranged at the head of the wedge-shaped positioning blocks I;
the first male die is provided with a sprue gate molding convex column and a cold-shrinkage Kong Yuliu convex column;
the second precoated sand outer mold half forming die comprises a female die II and a male die II, a second precoated sand outer mold half forming cavity is formed between the female die II and the male die II, a plurality of wedge-shaped positioning blocks II are arranged on the outer edge of the male die II, a plurality of positioning openings II matched with the wedge-shaped positioning blocks II are formed in the outer edge of the female die II, and a second sand shooting groove penetrating through the second precoated sand outer mold half forming cavity is formed in the head of each wedge-shaped positioning block II;
the second male die is provided with a converging sinking port forming convex cylinder corresponding to the sprue gate forming convex cylinder and a cold-shrinking sinking groove forming convex cylinder corresponding to the cold-shrinking Kong Yuliu convex cylinder.
Furthermore, a plurality of grooves which are communicated with each other are arranged on the female die II, and all the grooves are positioned on the same plane.
Furthermore, the top of the cold shrinkage hole reserved convex column is provided with a shrinkage head. The shrinkage head is the highest point of the mould, so that the flaw area of the metal liquid after cold shrinkage is not positioned at the product, but at the shrinkage head.
A sand filling cavity is formed between the female die I and the male die I, namely a precoated sand outer die half forming cavity I, a sand filling cavity is formed between the female die II and the male die II, namely a precoated sand outer die half forming cavity II, two product forming cavities are formed between the precoated sand outer die half forming cavity I and the precoated sand outer die half forming cavity II, a pouring gate forming convex column is located at the central position, the sand filling cavity is formed between the female die II and the male die II, after solidification, another precoated sand half mould for casting a dust collector shell is formed between the female die II and the male die II, the two precoated sand half moulds form a precoated sand outer die for preparing the dust collector shell, an inner die assembly for mounting and splicing precoated sand is arranged in the sand filling cavity, namely a filling area of molten metal, formed between the inner die and the outer die, and a product is formed after metal is also solidified; in the scheme, a sprue gate forming convex column and a cold-shrinkage Kong Yuliu convex column are arranged on a first precoated sand outer mold half body forming mold, the sprue gate forming convex column is a forming part of a sprue gate, and the cold-shrinkage Kong Yuliu convex column is a forming part of a liquid cold-shrinkage reserved space, and a confluence sinking port forming convex column and a cold-shrinkage sinking groove forming convex column are arranged on a second precoated sand outer mold half body forming mold, so that metal liquid can have confluence and buffer spaces below the sprue gate, the metal liquid is smoothly injected, bubbles are reduced, and the cold-shrinkage sinking groove forming convex column can also play a role of smooth backflow when the metal liquid is cold-shrunk.
In order to facilitate online operation, the precoated sand outer die needs to be horizontally arranged, and the steel shots need to generate pressure on all outer walls of the die in the steel shot jolting process, so that the female die II is provided with a plurality of communicated grooves, the precoated sand die is provided with convex ribs corresponding to the grooves and positioned in the same plane, the die can be stably placed, and the steel shots can generate pressing force on the die from bottom to top or from top to bottom on the outer sides of the convex ribs.
Drawings
Fig. 1 is a schematic three-dimensional structure diagram (angle cock body) of a first mold for molding the precoated sand outer mold half body.
FIG. 2 is a schematic three-dimensional structure diagram (folding angle cock body) of a second mold for molding the precoated sand outer mold half body.
FIG. 3 is a plan view of a first mold for molding the precoated sand outer mold half body (folding angle cock body).
FIG. 4 is a plan view of a second mold for sand-coated outer mold half (angle plug door).
Fig. 5 is a schematic perspective view of a formed metal part (i.e., two angle plug door bodies after being cut).
In the figure, 11, a first concave die; 12. a first male die; 13. a wedge-shaped positioning block I; 14. a first positioning opening; 15. a first sand shooting groove; 16. forming a convex column by a sprue gate; 17. a convex column is reserved in the cold shrinkage cavity; 21. a female die II; 22. a male die II; 23. a second wedge-shaped positioning block; 24. a second positioning port; 25. a second sand shooting groove; 26. converging and sinking port forming convex columns; 27. forming a convex column by a cold contraction sinking groove; 3. and (4) a groove.
Detailed description of the preferred embodiments
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
As shown in fig. 1-4, the precoated sand outer mold paired molds of the angle plug door body comprise a precoated sand outer mold half forming mold I and a precoated sand outer mold half forming mold II, the precoated sand outer mold half forming mold I comprises a female mold I11 and a male mold I12, a precoated sand outer mold half forming cavity I is formed between the female mold I11 and the male mold I12, a plurality of wedge-shaped positioning blocks I13 are arranged on the outer edge of the male mold I12, a plurality of positioning openings I14 matched with the wedge-shaped positioning blocks I13 are arranged on the outer edge of the female mold I11, and a sand shooting groove I15 penetrating through the precoated sand outer mold half forming cavity I is arranged at the head of the wedge-shaped positioning blocks I13;
the male die I12 is provided with a sprue gate molding convex column 16 and a cold shrinkage Kong Yuliu convex column 17;
the second precoated sand outer mold half forming die comprises a second female die 21 and a second male die 22, a second precoated sand outer mold half forming cavity is formed between the second female die 21 and the second male die 22, a plurality of wedge-shaped positioning blocks 23 are arranged on the outer edge of the second male die 22, a plurality of positioning openings 24 matched with the wedge-shaped positioning blocks 23 are arranged on the outer edge of the second female die 21, and the head of each wedge-shaped positioning block 23 is provided with a second sand shooting groove 25 penetrating through the second precoated sand outer mold half forming cavity;
the second male die 22 is provided with a converging countersunk forming convex column 26 corresponding to the sprue forming convex column 16 and a cold-shrinkage countersunk forming convex column 27 corresponding to the cold-shrinkage Kong Yuliu convex column 17.
The second female die 21 is provided with a plurality of grooves 3 which are communicated with each other, and all the grooves are positioned on the same plane.
The top of the cold shrink Kong Yuliu convex column 17 is provided with a shrinking head. The shrinkage head is the highest point of the mould, so that the flaw area of the metal liquid after cold shrinkage is not positioned at the product, but at the shrinkage head.
A sand filling cavity is formed between the female die I11 and the male die I12, namely a precoated sand outer die half forming cavity I, a sand material filled and configured from the sand shooting groove I15 is formed, after solidification, one precoated sand half die for casting a dust collector shell is formed between the female die I11 and the male die I12, a sand filling cavity is formed between the female die II 21 and the male die II 22, namely a precoated sand outer die half forming cavity II, two product forming cavities are formed between the precoated sand outer die half forming cavity I and the precoated sand outer die half forming cavity II, the sprue gate forming convex column 16 is located at a central position, the sand material filled and configured from the sand shooting groove II 25 is formed, after solidification, another precoated sand half die for casting a dust collector shell is formed between the female die II 21 and the male die II 22, the precoated sand outer die for preparing the dust collector shell is formed by the two precoated sand half dies, an inner die assembly for coating sand is installed and spliced in the precoated sand outer die, a cavity formed between the inner die and the outer die is a filling area of molten metal, and a product is formed after metal is also solidified; in the scheme, a sprue gate forming convex column 16 and a cold-shrinkage Kong Yuliu convex column 17 are arranged on a first mold half of the precoated sand outer mold, the sprue gate forming convex column 16 is a forming part of a sprue gate, the cold-shrinkage Kong Yuliu convex column 17 is a forming part of a liquid cold-shrinkage reserved space, a confluence sinking port forming convex column 26 and a cold-shrinkage sinking groove forming convex column 27 are arranged on a second mold half of the precoated sand outer mold, so that metal liquid can have confluence and buffer spaces below the sprue gate, the metal liquid is smoothly injected, bubbles are reduced, and the cold-shrinkage sinking groove forming convex column 27 can play a role of smooth backflow when the metal liquid is shrunk.
In order to facilitate online operation, the precoated sand outer die needs to be horizontally arranged, and the steel shots need to generate pressure on all outer walls of the die in the steel shot jolting process, so that the female die 21 is provided with a plurality of communicated grooves, the precoated sand die is provided with convex ribs corresponding to the grooves and positioned in the same plane, the die can be stably placed, and the steel shots can generate pressing force on the die from bottom to top or from top to bottom on the outer sides of the convex ribs.
The formed and unslit metal piece is shown in fig. 5, and is cut to obtain blank pieces of two angle cock bodies, and fig. 1-4 are die structures of sand-coated outer dies of the angle cock bodies.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (3)
1. The precoated sand outer mold paired mold for the folded angle plug door body and the straight-end plug door body is characterized by comprising a precoated sand outer mold half body forming mold I and a precoated sand outer mold half body forming mold II, wherein the precoated sand outer mold half body forming mold I comprises a female mold I (11) and a male mold I (12), a precoated sand outer mold half body forming cavity I is formed between the female mold I (11) and the male mold I (12), a plurality of wedge-shaped positioning blocks I (13) are arranged on the outer edge of the male mold I (12), a plurality of positioning openings I (14) matched with the wedge-shaped positioning blocks I (13) are formed in the outer edge of the female mold I (11), and a first sand shooting groove (15) penetrating through the precoated sand outer mold half body forming cavity I is formed in the head of the wedge-shaped positioning block I (13);
the male die I (12) is provided with a sprue gate molding convex column (16) and a cold shrinkage Kong Yuliu convex column (17);
the second precoated sand outer mold half forming die comprises a second female die (21) and a second male die (22), a second precoated sand outer mold half forming cavity is formed between the second female die (21) and the second male die (22), a plurality of wedge-shaped positioning blocks II (23) are arranged on the outer edge of the second male die (22), a plurality of positioning openings II (24) matched with the wedge-shaped positioning blocks II (23) are arranged on the outer edge of the second female die (21), and a second sand shooting groove (25) penetrating through the second precoated sand outer mold half forming cavity is formed in the head of each wedge-shaped positioning block II (23);
the second male die (22) is provided with a converging sinking port forming convex column (26) corresponding to the pouring port forming convex column (16) and a cold-shrinking sinking groove forming convex column (27) corresponding to the cold-shrinking Kong Yuliu convex column (17).
2. The paired sand-coated outer mold for the bevel plug door body and the straight end plug door body according to claim 1, wherein a plurality of grooves (3) which are communicated with each other are formed in the second female mold (21), and the grooves are positioned on the same plane.
3. The paired external mold for precoated sand of the bevel plug door body and the straight end plug door body according to claim 1, wherein the top of the cold shrinkage cavity reserved convex column (17) is provided with a shrinkage head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222627247.9U CN218798921U (en) | 2022-09-28 | 2022-09-28 | Precoated sand outer mold pair die for angle plug door body and straight end plug door body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222627247.9U CN218798921U (en) | 2022-09-28 | 2022-09-28 | Precoated sand outer mold pair die for angle plug door body and straight end plug door body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218798921U true CN218798921U (en) | 2023-04-07 |
Family
ID=87273154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222627247.9U Active CN218798921U (en) | 2022-09-28 | 2022-09-28 | Precoated sand outer mold pair die for angle plug door body and straight end plug door body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218798921U (en) |
-
2022
- 2022-09-28 CN CN202222627247.9U patent/CN218798921U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108057873B (en) | Process method for casting thin-wall aluminum alloy casting at low pressure | |
| CN206425523U (en) | A kind of casting die being easily stripped | |
| CN201960085U (en) | Mould used for sleeve with side hole | |
| CN218798921U (en) | Precoated sand outer mold pair die for angle plug door body and straight end plug door body | |
| CN213162988U (en) | Casting chill mold capable of being used for rapid production change | |
| CN106001423A (en) | Easy-to-release metal rail mould | |
| CN202555771U (en) | Valve casting tool | |
| CN218532731U (en) | Coated sand external mold paired dies of derailed valve body | |
| CN218855545U (en) | Precoated sand outer mold forming mold of dust collector body | |
| CN104741542A (en) | Casting method of girder having thin-walled cylinder and casting mold | |
| CN203621405U (en) | Girder casting die with thin-walled tube | |
| CN209903704U (en) | RTM (resin transfer molding) mold for molding composite part with semi-closed structure by one mold and two cavities | |
| CN202263898U (en) | Metal die for casting aluminum alloy shell for gearbox grounding device of motor train unit | |
| CN210702383U (en) | Double-layer sandwich die for disc products | |
| CN220880423U (en) | Sand shell for casting valve body and manufacturing mold thereof | |
| CN111390121A (en) | High-efficient one goes out many valve caps psammitolite mould casting device | |
| CN216138063U (en) | Casting template of pump cover for wind power | |
| CN216544504U (en) | Wax pattern forming die for connecting hook body of sightseeing train carriage | |
| CN219130682U (en) | Sand mould and sand mould casting module | |
| CN220161252U (en) | Modeling mold for machining speed reducer box | |
| CN218946315U (en) | Casting core box mold with low-pressure pouring system | |
| CN211489562U (en) | Iron core forming die for switched reluctance motor | |
| CN210702369U (en) | Automobile spare and accessory part production mould | |
| CN104399936A (en) | Injection molding mold for agricultural machine casting | |
| CN213671712U (en) | Efficient casting mold for machining lock shell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |