CN104588578A - Exhaust block and exhaust structure for deep-cavity part of core-making mold of hot-core box - Google Patents
Exhaust block and exhaust structure for deep-cavity part of core-making mold of hot-core box Download PDFInfo
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- CN104588578A CN104588578A CN201410801419.7A CN201410801419A CN104588578A CN 104588578 A CN104588578 A CN 104588578A CN 201410801419 A CN201410801419 A CN 201410801419A CN 104588578 A CN104588578 A CN 104588578A
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- exhaust
- mould
- exhaust block
- vertical
- block
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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
- B22C7/065—Venting means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses an exhaust block for a deep-cavity part of a core-making mold of a hot-core box. The exhaust block is in the shape of an inverted L; an arc-shaped surface is formed on the wall surface on one side of the exhaust block; exhaust grooves which penetrate from top to bottom are formed in the arc-shaped surface at intervals; the wall surface on the other side of the exhaust block is sequentially divided into a vertical exhaust surface, a horizontal buffer surface, a vertical dredging surface and a vertical distribution surface from top to bottom; and an exhaust groove which vertically penetrates through the whole vertical distribution surface is formed in the vertical distribution surface. The invention also discloses an exhaust structure for the deep-cavity part of the core-making mold of the hot-core box. The exhaust structure comprises a mold, a mounting block, a screw and the exhaust block. A mounting hole is formed in the deep-cavity part of the mold; the exhaust block is positioned in the mounting hole and is locked on the mold by virtue of the mounting block by using a screw; the arc-shaped surface and the vertical distribution surface of the exhaust block are respectively in tight fit with the mold; and gaps are respectively formed between the vertical dredging surface and the mold, between the horizontal buffer surface and the mold and between the vertical exhaust surface of the exhaust block and the mold. According to the exhaust block and the exhaust structure disclosed by the invention, gas can be effectively discharged in the core making process, and blockage is avoided.
Description
Technical field
The invention belongs to cylinder cover of automobile engine casting field, be specifically related to a kind of exhaust block for position, core box core making mould dark chamber and exhaust structure.
Background technology
The cylinder head core box core making mould of automobile engine has complicated position, dark chamber usually, and the exhaust mode at these positions is based on venting plug at present.By venting plug, the gas being blocked in position, dark chamber in coremaking process is discharged, to realize formed product.But the precoated sand of hot box process has dust in sintering process and resin is formed, and these two kinds of materials can block the hole of venting plug, cause venting plug to lose efficacy.Therefore, when being vented with venting plug, the quality fluctuation of product is very big, and venting plug cost is high, change difficulty, is unfavorable for producing.As shown in Figure 1, traditional die for making core dark chamber exhaust mode, venting plug 1 is installed on the top at the dark position, chamber of mould 2, and gas drains into mold exterior by venting plug.In process of production, the time venting plug of about a week will block, and must change, otherwise venting plug position just there will be the shaping bad defect of core.Venting plug after replacing can only be scrapped, and not can be recycled.Special tooling need be used to be ejected by venting plug when changing venting plug, to avoid venting plug bursting, venting plug is once bursting must use drill bit the venting plug of remnants could be cleaned out, and this method for cleaning is very difficult, and easy damaged mould.
Therefore, a kind of new exhaust block for position, core box core making mould dark chamber of exploitation and exhaust structure is necessary.
Summary of the invention
The object of this invention is to provide a kind of exhaust block for position, core box core making mould dark chamber and exhaust structure, effective discharge of gas in coremaking process can be realized, and not easily block, and it is convenient to change maintenance.
Exhaust block for position, core box core making mould dark chamber of the present invention, described exhaust block is inverted L-shaped, one side wall surface is arc surface, the spaced apart air discharge duct being provided with up/down perforation on arc surface, the opposite side wall that described exhaust block is relative with arc surface is divided into vertical deflation area, horizontal buffering suface, vertically dredging face and vertical distribution face from top to bottom successively, and vertical dredging face is a little less than vertical distribution face, and on vertical distribution face, offer the air discharge duct in the whole vertical distribution face of up/down perforation.
The cross section of described air discharge duct is V-arrangement.Air discharge duct is designed to V-arrangement, relative to circular arc or square advantage is: in use air discharge duct can not block; And be convenient to processing.
The degree of depth of described air discharge duct is 0.5 ~ 1.5mm, and angle is 55 ° ~ 65 °.
The degree of depth of described air discharge duct is 1mm, and angle is 60 °
The exhaust structure at position, the dark chamber of a kind of core box core making mould of the present invention, comprises mould, also comprises mounting blocks, screw and exhaust block as claimed in claim 1 or 2; The installing hole matched with exhaust block is provided with at position, mould dark chamber, described exhaust block is positioned at this installing hole, and by mounting blocks screw lock on mould, and the arc surface of exhaust block, vertically distribution face closely cooperate with mould respectively, the vertical dredging face of exhaust block, horizontal buffering suface, vertically deflation area have gap respectively and between mould.
Gap between the vertical dredging face of described exhaust block and mould is 1.5 ~ 2.5mm; Gap between the horizontal buffering suface of exhaust block and mould is 3.5 ~ 4.5mm; Gap between the vertical deflation area of exhaust block and mould is 5.5 ~ 6.5mm.
After exhaust block and die assembly, its arc surface and vertical distribution face closely cooperate with mould respectively, the dredging road that 1.5 ~ 2.5mm is wide is formed between vertical dredging face and mould, form the wide buffer platform of 3.5 ~ 4.5mm between horizontal buffering suface and mould, between vertical discharge face and mould, form the wide exhaust duct of 5.5 ~ 6.5mm.
As preferably, the gap between the vertical dredging face of described exhaust block and mould is 2mm; Gap between the horizontal buffering suface of exhaust block and mould is 4mm; Gap between the vertical deflation area of exhaust block and mould is 6mm.
During mold work, the gas of dark chamber internal upper part containing dust and resin less, gas discharges mould by the air discharge duct on exhaust block arc surface, lower gas containing dust and resin more, gas first drains in dredging road by the air discharge duct on vertical distribution face, converge through dredging road and guide to buffer platform, due to from dredging road to buffer platform, air-flow becomes horizontal direction and channel space is by about 2mm that wide to increase to about 4mm wide from vertical direction, the dust be mingled with in gas and resin just can be deposited in buffer platform, and residual gas is discharged in exhaust duct.From air discharge duct to exhaust duct, channel width increases to about 6mm by about 1mm gradually, and this structure extending out formula can realize gas and discharge fast, thus avoids dust and resin to deposit in air discharge duct and dredging road.When mould overhauls, the deposit in cleaning buffer platform gets final product Reusability.
The present invention has the following advantages: the present invention devises buffer platform and corresponding channel design, achieves the field trashes such as the dust in gas and resin to guide in buffer platform to deposit, and avoids field trash blocking exhaust passage.Exhaust block is by machine-shaping, and structure is simple, and easy to make, its cost of manufacture is lower than the cost of venting plug; Exhaust block screw is installed simultaneously, and it is convenient to change, and getting final product Reusability, without the need to changing, reducing use cost after the deposit in cleaning buffer platform.
Accompanying drawing explanation
Fig. 1 is existing existing die for making core dark chamber row's mode schematic diagram;
Fig. 2 is the structural representation of the exhaust block for position, core box core making mould dark chamber of the present invention;
Fig. 3 is the axonometric drawing of the exhaust structure at position, core box core making mould of the present invention dark chamber;
Fig. 4 is the schematic diagram of the exhaust structure at position, core box core making mould of the present invention dark chamber;
Fig. 5 is the cut-away view along A-A line in Fig. 4.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described:
The exhaust block for position, core box core making mould dark chamber as shown in Figure 2, described exhaust block 3 is in inverted L-shaped, one side wall surface is arc surface 36, the spaced apart air discharge duct 32 being provided with up/down perforation on arc surface 36, the opposite side wall that described exhaust block 3 is relative with arc surface 36 is divided into vertical deflation area 35, horizontal buffering suface 34, vertically dredging face 33 and vertical distribution face 31 from top to bottom successively, and vertical dredging face 33 is a little less than vertical distribution face 31, and on vertical distribution face 31, offer the air discharge duct 32 in the whole vertical distribution face 31 of up/down perforation.
The cross section of described air discharge duct 32 is V-arrangement, and its degree of depth is 1mm, and angle is 60 °.Air discharge duct 32 is designed to V-arrangement, is relative to circular arc, square advantage: in use procedure, air discharge duct 32 can not be blocked; And be convenient to processing.
Described in exhaust block for position, mould dark chamber of the present invention, the degree of depth of air discharge duct 32 also can be 0.5mm, or is 1.5mm, and its angle also can be 55 °, or is 65 °.
As shown in Figures 2 to 5, the exhaust structure at position, the dark chamber of a kind of core box core making mould of the present invention, comprises mould 2, mounting blocks 4, screw 5 and exhaust block of the present invention 3; Be provided with at the dark position, chamber of mould 2 installing hole matched with exhaust block 3, described exhaust block 3 is positioned at this installing hole, and is locked on mould 2 by mounting blocks 4 screw 5, and the arc surface 36 of exhaust block 3, vertically distribution face 31 closely cooperate with mould 2 respectively.Gap between the vertical dredging face 33 of exhaust block 3 and mould 2 is 2mm, namely between the vertical dredging face 33 and mould 2 of exhaust block 3, forms the wide dredging road 6 of 2mm.Gap between the horizontal buffering suface 34 of exhaust block 3 and mould 2 is 4mm, namely between the horizontal buffering suface 34 and mould 2 of exhaust block 3, forms the wide buffer platform of 4mm 7.Gap between the vertical deflation area 35 of exhaust block 3 and mould 2 is 6mm, namely between the vertical discharge face and mould 2 of exhaust block 3, forms the wide exhaust duct of 6mm 8.
During mold work, the gas of dark chamber internal upper part containing dust and resin less, gas discharges mould 2 by the air discharge duct 32 of exhaust block 3 circular arc side, lower gas containing dust and resin more, gas first drains in dredging road 6 by the air discharge duct 32 on vertical distribution face 31, converge through dredging road 6 and guide to buffer platform 7, due to from dredging road 6 to buffer platform 7, air-flow becomes horizontal direction and channel space is by 2mm that wide to increase to 4mm wide from vertical direction, the dust be mingled with in gas and resin just can be deposited in buffer platform 7, residual gas is discharged in exhaust duct 8.The present invention is from air discharge duct 32 to exhaust duct 8, and the width of whole passage increases to 6mm by 1mm gradually, and this structure extending out formula can realize gas and discharge fast, thus avoids dust and resin deposition in air discharge duct 32 and dredging road 6.When mould 2 overhauls, the deposit in cleaning buffer platform 7 gets final product Reusability.
In the exhaust structure at position, the dark chamber of a kind of core box core making mould of the present invention, the gap between the vertical dredging face 33 of described exhaust block 3 and mould 2 also can be 1.5mm, or is 2.5mm; Gap between the horizontal buffering suface 34 of described exhaust block 3 and mould 2 also can be 3.5mm, or is 4.5mm; Gap between the vertical deflation area 35 of described exhaust block 3 and mould 2 also can be 5.5mm, or is 6.5mm.
Claims (7)
1. the exhaust block for position, core box core making mould dark chamber, it is characterized in that: described exhaust block (3) is in inverted L-shaped, one side wall surface is arc surface (36), at the upper spaced apart air discharge duct (32) being provided with up/down perforation of arc surface (36), the opposite side wall that described exhaust block (3) is relative with arc surface (36) is divided into vertical deflation area (35) from top to bottom successively, horizontal buffering suface (34), vertical dredging face (33) and vertically distribution face (31), and vertically dredge face (33) a little less than vertical distribution face (31), and on vertical distribution face (31), offer the air discharge duct (32) of the whole vertical distribution face (31) of up/down perforation.
2. the exhaust block for position, core box core making mould dark chamber according to claim 1, is characterized in that: the cross section of described air discharge duct (32) is V-arrangement.
3. the exhaust block for position, core box core making mould dark chamber according to claim 2, is characterized in that: the degree of depth of described air discharge duct (32) is 0.5 ~ 1.5mm, and angle is 55 ° ~ 65 °.
4. the exhaust block for position, core box core making mould dark chamber according to claim 3, is characterized in that: the degree of depth of described air discharge duct (32) is 1mm, and angle is 60 °.
5. the exhaust structure at position, core box core making mould dark chamber, comprises mould (2), it is characterized in that: also comprise mounting blocks (4), screw (5) and as arbitrary in Claims 1-4 as described in exhaust block (3); The installing hole matched with exhaust block (3) is provided with at the dark position, chamber of mould (2), described exhaust block (3) is positioned at this installing hole, and be locked on mould (2) by mounting blocks (4) screw (5), and the arc surface (36) of exhaust block (3), vertically distribution face (31) closely cooperate with mould (2) respectively, the vertical dredging face (33) of exhaust block (3), horizontal buffering suface (34), vertically deflation area (35) have gap respectively and between mould (2).
6. the exhaust structure at position, core box core making mould according to claim 5 dark chamber, is characterized in that: the gap between the vertical dredging face (33) of described exhaust block (3) and mould (2) is 1.5 ~ 2.5mm; Gap between the horizontal buffering suface (34) of exhaust block (3) and mould (2) is 3.5 ~ 4.5mm; Gap between the vertical deflation area (35) of exhaust block (3) and mould (2) is 5.5 ~ 6.5mm.
7. the exhaust structure at position, the dark chamber of the core box core making mould according to claim 5 or 6, is characterized in that: the gap between the vertical dredging face (33) of described exhaust block (3) and mould (2) is 2mm; Gap between the horizontal buffering suface (34) of exhaust block (3) and mould (2) is 4mm; Gap between the vertical deflation area (35) of exhaust block (3) and mould (2) is 6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410801419.7A CN104588578B (en) | 2014-12-22 | 2014-12-22 | A kind of exhaust block for position, core box core making mould deep chamber and exhaust structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410801419.7A CN104588578B (en) | 2014-12-22 | 2014-12-22 | A kind of exhaust block for position, core box core making mould deep chamber and exhaust structure |
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| Publication Number | Publication Date |
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| CN104588578A true CN104588578A (en) | 2015-05-06 |
| CN104588578B CN104588578B (en) | 2016-08-24 |
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| CN201410801419.7A Active CN104588578B (en) | 2014-12-22 | 2014-12-22 | A kind of exhaust block for position, core box core making mould deep chamber and exhaust structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107855469A (en) * | 2017-12-08 | 2018-03-30 | 广西玉柴机器股份有限公司 | A kind of Mold air vent plug changes method and instrument |
| CN109622884A (en) * | 2019-02-20 | 2019-04-16 | 苏州明志科技有限公司 | A kind of exhaust structure for core box |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19526842C1 (en) * | 1995-07-22 | 1996-06-13 | Peter Mueller | Nozzle for exhausting air from core box |
| CN202921864U (en) * | 2012-11-07 | 2013-05-08 | 广西玉柴机器股份有限公司 | Four-valve cylinder head sand core die |
| CN203124694U (en) * | 2013-01-29 | 2013-08-14 | 宁波市北仑辉旺铸模实业有限公司 | Directly-formed die-casting mould air discharge block free of fine carving |
| CN203209659U (en) * | 2013-04-25 | 2013-09-25 | 重庆东科模具制造有限公司 | Air exhausting plate for die-casting mould |
| CN203245352U (en) * | 2013-04-02 | 2013-10-23 | 衡阳风顺车桥有限公司 | Low pressure casting air exhausting device |
| CN103801657A (en) * | 2012-11-07 | 2014-05-21 | 广西玉柴机器股份有限公司 | Four-valve cylinder cover sand core die |
| CN104128585A (en) * | 2014-08-22 | 2014-11-05 | 重庆长安汽车股份有限公司 | Core exhaust device of low-pressure casting die for cylinder head |
-
2014
- 2014-12-22 CN CN201410801419.7A patent/CN104588578B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19526842C1 (en) * | 1995-07-22 | 1996-06-13 | Peter Mueller | Nozzle for exhausting air from core box |
| CN202921864U (en) * | 2012-11-07 | 2013-05-08 | 广西玉柴机器股份有限公司 | Four-valve cylinder head sand core die |
| CN103801657A (en) * | 2012-11-07 | 2014-05-21 | 广西玉柴机器股份有限公司 | Four-valve cylinder cover sand core die |
| CN203124694U (en) * | 2013-01-29 | 2013-08-14 | 宁波市北仑辉旺铸模实业有限公司 | Directly-formed die-casting mould air discharge block free of fine carving |
| CN203245352U (en) * | 2013-04-02 | 2013-10-23 | 衡阳风顺车桥有限公司 | Low pressure casting air exhausting device |
| CN203209659U (en) * | 2013-04-25 | 2013-09-25 | 重庆东科模具制造有限公司 | Air exhausting plate for die-casting mould |
| CN104128585A (en) * | 2014-08-22 | 2014-11-05 | 重庆长安汽车股份有限公司 | Core exhaust device of low-pressure casting die for cylinder head |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107855469A (en) * | 2017-12-08 | 2018-03-30 | 广西玉柴机器股份有限公司 | A kind of Mold air vent plug changes method and instrument |
| CN107855469B (en) * | 2017-12-08 | 2023-10-27 | 广西玉柴机器股份有限公司 | Method and tool for disassembling and replacing mold vent plug |
| CN109622884A (en) * | 2019-02-20 | 2019-04-16 | 苏州明志科技有限公司 | A kind of exhaust structure for core box |
| CN109622884B (en) * | 2019-02-20 | 2023-12-26 | 苏州明志科技股份有限公司 | Exhaust structure for core box |
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| CN104588578B (en) | 2016-08-24 |
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