CN109746398B - Casting mold for bent pipe castings - Google Patents
Casting mold for bent pipe castings Download PDFInfo
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- CN109746398B CN109746398B CN201910177995.1A CN201910177995A CN109746398B CN 109746398 B CN109746398 B CN 109746398B CN 201910177995 A CN201910177995 A CN 201910177995A CN 109746398 B CN109746398 B CN 109746398B
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- bent pipe
- die
- shaped
- pipe section
- cone
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- 238000005266 casting Methods 0.000 title claims abstract description 33
- 238000003825 pressing Methods 0.000 claims abstract description 6
- 230000000694 effects Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 description 13
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000005429 filling process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000007528 sand casting Methods 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 241000519995 Stachys sylvatica Species 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention discloses a casting die for bent pipe castings, which comprises a right half die, a left half die and a bottom plate, wherein a positioning pin is arranged on the bottom plate, the right half die and the left half die are mounted on the bottom plate through the positioning pin, the right half die and the left half die are tightly attached together, a first pressing plate and a second pressing plate are respectively arranged on the side edges of the right half die and the left half die and are movably connected through a fastener, a first large half cone and a second small half cone are respectively arranged on the upper part of the right half die, an L-shaped bent pipe section I communicated with the upper part of the first large half cone is arranged below the first large half cone, an S-shaped pouring channel I is communicated with the lower part of the second half cone, and the first S-shaped pouring channel and the first L-shaped bent pipe section are communicated through a first half cone pipe. The part turning part is arranged at the lower part in a pouring way and a feeding way from the pipe orifice, so that the internal quality of the turning part is easy to ensure, the pipe orifices at two ends are respectively used as a pouring inlet and a riser, the middle pipe is internally provided with a sliding block and other structures due to inconvenience, sand core forming is adopted, and the sand core in the part after forming is cleaned in the later stage, so that a good using effect is achieved.
Description
Technical Field
The invention relates to a die, in particular to a casting die for bent pipe castings, and belongs to the technical field of casting die equipment.
Background
It is now required to process a connecting pipe aluminum alloy part as shown in fig. 3, casting molding is required, machining is required for the pipe orifice part, no air holes exist after machining, and good air tightness is required, because the part belongs to a bent pipe cavity structure, sand casting is originally intended to be adopted, influences caused by demolding of the cast part are not considered, but problems are required to be solved because the problems of difficult molding in the early stage, sand core placement, later part cleaning and the like exist, the surface quality is poor after sand casting molding, defects such as air holes and the like are easily generated at the end part, and the casting quality is not satisfied by customers.
Disclosure of Invention
The invention aims to solve the technical problems that: the utility model provides a casting die utensil for return bend foundry goods, through adopting the mode of pouring from the mouth of pipe, mouth of pipe feeding, place the part turn position in the lower part, easily guarantee this turn position internal quality, the structure is for taking the mouth of pipe at both ends as into runner and riser respectively, adopts the sand core shaping because of inconvenient adoption slider isotructure in the intermediate tube, and the clearance of sand core later stage in the part has effectively solved the problem that above-mentioned exists after the shaping.
The technical scheme of the invention is as follows: the utility model provides a casting die for return bend foundry goods, it includes right half mould, left half mould and bottom plate, the bottom plate is square flat structure, is equipped with the locating pin on the bottom plate, right half mould and left half mould are installed on the bottom plate through the locating pin, and right half mould and left half mould are hugged closely together, are equipped with clamp plate one and clamp plate two respectively and pass through fastener swing joint at the side of right half mould and left half mould, right half mould top is equipped with big half cone one and little half cone one respectively, and there is the L type curved pipe section one of intercommunication in the below of big half cone one, communicates S type runner one in the below of little half cone one, communicates through half cone pipe one between S type runner one and L type curved pipe section one.
The left half die and the right half die are symmetrically arranged, the upper part of the left half die is respectively provided with a large half cone II and a small half cone II, an L-shaped bent pipe section II is communicated below the large half cone II, an S-shaped runner II is communicated below the small half cone II, and the S-shaped runner II is communicated with the L-shaped bent pipe section II through a half cone pipe II.
Two guide post holes I are formed in two side edges of the right half die.
The two sides of the left half die are respectively provided with a guide post hole II corresponding to the guide post hole I, and a guide post is arranged between the guide post hole I and the guide post hole II.
The beneficial effects of the invention are as follows: compared with the prior art, the technical scheme of the invention has simple structure, is convenient for later cleaning and the like, can be directly sawn and removed because the riser and the casting part are both outside the required part body, and does not influence the appearance of the part after being removed; in addition, the connecting pipe has various product types and is different in length of straight pipe parts, so that common blank pieces can be adopted in actual production, and the manufacturing cost of a die is reduced; most importantly, the casting method accords with the sequential solidification principle of casting, a very good feeding channel is provided for the riser in the production process, the whole structure is streamline, no abrupt flow direction transformation exists, and the flow of molten metal in the mold filling process is limited and controlled as much as possible; in addition, the S-shaped sprue slows down the flow speed of the molten aluminum during casting, ensures the molten metal to flow stably in the mold filling process, and ensures the internal structure of the produced part to be compact by the whole structural design, thereby ensuring the casting quality to the greatest extent.
Actual production verification proves that the structural design scheme is adopted for production, so that the production efficiency is improved to a great extent, the part forming effect is good, and the internal structure is compact; the parts with various models share the blank, so that the manufacturing cost of the die and the time for changing the die in the production process are reduced. And after processing, the process verifies that the feeding is good, no sand holes exist on the processing surface, and the air tightness of the part meets the use requirement. Bringing great economic benefit to the company on the project.
By using the design scheme, high-efficiency high-quality production is realized, and a good use effect is achieved.
Drawings
FIG. 1 is a schematic view of a static mold structure according to the present invention;
FIG. 2 is a schematic diagram of a movable mold structure according to the present invention;
FIG. 3 is a schematic view of the structure of a cast part of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings of the present specification.
Example 1: as shown in figures 1-3, a casting mould for elbow castings comprises a right half mould 3, a left half mould 18 and a bottom plate 9, wherein the bottom plate 9 is of a square flat plate structure, a positioning pin 8 is arranged on the bottom plate 9, the right half mould 3 and the left half mould 18 are mounted on the bottom plate 9 through the positioning pin 8, the right half mould 3 and the left half mould 18 are tightly attached together, a first pressing plate 6 and a second pressing plate 23 are respectively arranged on the side edges of the right half mould 3 and the left half mould 18 and are movably connected through fasteners, a first large half cone 2 and a first small half cone 4 are respectively arranged on the upper part of the right half mould 3, an L-shaped bent pipe section 11 communicated with the lower part of the first large half cone 2 is arranged below the first small half cone 4, a first S-shaped pouring channel 7 is communicated with the first L-shaped bent pipe section 11 through a first half cone 12.
Further, the left half die 18 and the right half die 3 are symmetrically arranged, the upper part of the left half die 18 is respectively provided with a second large half cone 16 and a second small half cone 14, an L-shaped bent pipe section II 20 communicated with the lower part of the second large half cone 16 is arranged below the second small half cone 14, an S-shaped runner II 22 is communicated with the lower part of the second small half cone 14, and the S-shaped runner II 22 is communicated with the second L-shaped bent pipe section II 20 through a second half cone pipe 24.
Further, two guide pillar holes I5 are arranged on two side edges of the right half mold 3.
Further, two sides of the left half mold 18 are respectively provided with a second guide pillar hole 13 corresponding to the first guide pillar hole 5, and a guide pillar is arranged between the first guide pillar hole 5 and the second guide pillar hole 13.
Further, a positioning circular arc boss I1 and a positioning circular arc boss II 10 are respectively arranged above and below the L-shaped bent pipe section I11 and are respectively used for positioning the sand core, so that the position of the sand core can be ensured, and the dimensional accuracy of a casting is ensured.
Further, a positioning circular arc boss III 17 and a positioning circular arc boss IV 21 are respectively arranged above and below the L-shaped bent pipe section II 20 and are matched with the positioning circular arc boss I1 and the positioning circular arc boss II 10 for use, and are used for positioning the sand core separately, so that the position of the sand core can be ensured, and the dimensional accuracy of castings is ensured.
Further, a sand core positioning pin hole 15 is arranged between the positioning circular arc-shaped boss III 17 and the positioning circular arc-shaped boss IV 21, and a sand core positioning pin for positioning the sand core is arranged in the sand core positioning pin hole 15.
Further, an L-shaped sand core is placed in a cavity between the L-shaped bent pipe section I11 and the L-shaped bent pipe section II 20, and a uniform gap is reserved between the L-shaped sand core and the L-shaped bent pipe section I11 and the L-shaped bent pipe section II 20, so that a bent pipe casting to be cast is formed.
Further, a mandrel hole 19 is further formed in the bending position of the L-shaped bent pipe section II 20 on the left half die 18, and a mandrel is placed in the mandrel hole 19 and is used for facilitating die stripping, so that the working efficiency is greatly improved.
The metal mold casting mode is selected for mass production, saving cost and improving production benefit, and compared with sand casting, the surface quality of the part cast by the metal mold is better; the external temperature is easy to control in the production process; can be rapidly molded. The method is characterized in that the way of pouring from the pipe orifice and feeding from the pipe orifice is adopted, the turning part of the part is arranged at the lower part, the internal quality of the turning part is easy to ensure, the pipe orifices at the two ends are respectively used as a pouring inlet and a riser, the middle pipe is inconvenient to adopt the structures such as a sliding block and the like, sand core forming is adopted, and the sand core in the part after forming is cleaned in the later stage.
Because the part is of a bent pipe structure, the part can be only split from the middle, and the two half molds can be spliced; in addition, aiming at the casting structure adopted, core pulling cannot be arranged, so that sand core molding can only be adopted in a pipe, a cylinder is respectively arranged at the positions, close to pipe orifices, of the head end and the tail end so as to be penetrated when the sand core is placed, so that the effect of placing the sand core is achieved, the effect of vertically positioning the whole sand core is also achieved, and corresponding placing positioning holes are reserved at corresponding positions when the sand core is manufactured, and the concrete pattern is shown in a figure III; in order to ensure that the sand core does not lean against one surface of the cavity after being placed in the cavity to achieve thorough positioning, the root parts of the two cylinders are provided with conformal round tables, so that the sand core is fixed in position and does not deviate after being placed, and the wall thickness of two sides of a part is ensured to be uniform;
The part opening part is horizontally placed, a parting surface is arranged in the middle of a round boss of the part by adopting a left-right die opening mode, a protruding part on a movable die is arranged to be of a movable structure, so that an inner cavity of the part can be formed, and the part has an ejection effect, an ejector rod mark is not required to be arranged on the part, and the forming surface of the inner cavity is ensured to be smooth; the upper end of the boss part is provided with the riser, the other end is provided with the gate, the hole adopts post processing, the feeding of the part and the casting far end is just facilitated, in addition, the sprue is designed into a U-shaped structure and the tail end is designed into a bent pipe shape for the design of the sprue part, the turbulence caused by high-speed scouring of molten metal in the casting process can be effectively improved, and the molten metal stably flows in the filling process. In addition, the thickness of the cross gate is properly increased by improvement in the production practice process, the quick filling can be ensured, the whole cavity is filled before the solidification of the gate, the relative balanced solidification temperature is ensured, white spots on the surface of the formed part are avoided, the gate can be effectively utilized for feeding, and the internal tissue is greatly improved.
The present invention is not described in detail in the present application, and is well known to those skilled in the art. Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (3)
1. The utility model provides a casting die for return bend foundry goods, it includes right half module (3), left half module (18) and bottom plate (9), its characterized in that: the bottom plate (9) is of a square flat plate structure, a positioning pin (8) is arranged on the bottom plate (9), the right half die (3) and the left half die (18) are installed on the bottom plate (9) through the positioning pin (8), the right half die (3) and the left half die (18) are tightly attached together, a first pressing plate (6) and a second pressing plate (23) are respectively arranged on the side edges of the right half die (3) and the left half die (18) and are movably connected through a fastener, a first large half cone (2) and a first small half cone (4) are respectively arranged on the upper portion of the right half die (3), an L-shaped bent pipe section I (11) communicated with the lower portion of the first large half cone (2) is arranged below the first small half cone (4), an S-shaped pouring channel I (7) is communicated with the first L-shaped bent pipe section I (11) through a first half cone pipe (12); the left half die (18) and the right half die (3) are symmetrically arranged, the upper part of the left half die (18) is respectively provided with a large half cone II (16) and a small half cone II (14), an L-shaped bent pipe section II (20) communicated with the lower part of the large half cone II (16), an S-shaped runner II (22) communicated with the lower part of the small half cone II (14) and a half cone II (24) communicated with the L-shaped bent pipe section II (20) through the half cone II; a positioning circular arc-shaped boss I (1) and a positioning circular arc-shaped boss II (10) are respectively arranged above and below the L-shaped bent pipe section I (11); a positioning circular arc boss III (17) and a positioning circular arc boss IV (21) are respectively arranged above and below the L-shaped bent pipe section II (20), and are matched with the positioning circular arc boss I (1) and the positioning circular arc boss II (10) for use, a sand core positioning pin hole (15) is arranged between the positioning circular arc boss III (17) and the positioning circular arc boss IV (21), and a sand core positioning pin for positioning a sand core is arranged in the sand core positioning pin hole (15); an L-shaped sand core is arranged in a cavity between the L-shaped bent pipe section I (11) and the L-shaped bent pipe section II (20), and a uniform gap is reserved between the L-shaped sand core and the L-shaped bent pipe section I (11) and the L-shaped bent pipe section II (20), so that a bent pipe casting to be cast is formed.
2. The casting mold for bent pipe castings according to claim 1, wherein: two guide pillar holes I (5) are formed in two side edges of the right half die (3).
3. The casting mold for bent pipe castings according to claim 1, wherein: two sides of the left half die (18) are respectively provided with a guide post hole II (13) corresponding to the guide post hole I (5), and a guide post is arranged between the guide post hole I (5) and the guide post hole II (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910177995.1A CN109746398B (en) | 2019-03-08 | 2019-03-08 | Casting mold for bent pipe castings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910177995.1A CN109746398B (en) | 2019-03-08 | 2019-03-08 | Casting mold for bent pipe castings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109746398A CN109746398A (en) | 2019-05-14 |
| CN109746398B true CN109746398B (en) | 2024-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910177995.1A Active CN109746398B (en) | 2019-03-08 | 2019-03-08 | Casting mold for bent pipe castings |
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| Country | Link |
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| CN (1) | CN109746398B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110125337B (en) * | 2019-05-31 | 2024-05-17 | 得莱格精密机械(昆山)有限公司 | Casting die for double-row elbow connector |
| CN110355334B (en) * | 2019-08-21 | 2020-12-08 | 安徽道润电子有限公司 | Casting die for bent pipe castings |
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| CN209578070U (en) * | 2019-03-08 | 2019-11-05 | 贵阳华烽有色铸造有限公司 | A kind of casting die for bend pipe casting |
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| JPS603940A (en) * | 1983-06-20 | 1985-01-10 | Tadao Oota | Casting method |
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| KR200394698Y1 (en) * | 2005-06-10 | 2005-09-05 | 유지춘 | Manufacture device for mold of elbow pipe |
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2019
- 2019-03-08 CN CN201910177995.1A patent/CN109746398B/en active Active
Patent Citations (2)
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|---|---|---|---|---|
| CN206425491U (en) * | 2016-12-30 | 2017-08-22 | 贵阳华烽有色铸造有限公司 | A kind of gravity casting mold of seal nipple |
| CN209578070U (en) * | 2019-03-08 | 2019-11-05 | 贵阳华烽有色铸造有限公司 | A kind of casting die for bend pipe casting |
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| CN109746398A (en) | 2019-05-14 |
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