CN219746245U - Hot core box die with exhaust function - Google Patents
Hot core box die with exhaust function Download PDFInfo
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- CN219746245U CN219746245U CN202320981982.1U CN202320981982U CN219746245U CN 219746245 U CN219746245 U CN 219746245U CN 202320981982 U CN202320981982 U CN 202320981982U CN 219746245 U CN219746245 U CN 219746245U
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- cavity
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- module
- core rod
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- 239000004576 sand Substances 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 4
- 238000013022 venting Methods 0.000 claims 3
- 238000000465 moulding Methods 0.000 abstract description 7
- 238000005266 casting Methods 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 abstract description 2
- 230000007547 defect Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
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- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The utility model relates to a hot core box mold with an exhaust function, and belongs to the technical field of casting molds. In order to solve the problem that the molding quality of the core is poor because compressed air cannot be discharged when the existing hot core box mold is used for core making. The utility model comprises a plurality of sub-modules, wherein after the sub-modules are matched, a cavity is formed between the sub-modules; the hot core box mould is provided with a sand shooting port; the position close to the cavity is provided with a top core rod mounting hole, and the top core rod is mounted in the hole; one end of the top core rod mounting hole is communicated with the cavity, and the other end extends out of the die along the die; a gap is reserved between the rod body of the top core rod and the top core rod mounting hole, so that a first exhaust channel is formed; the position of the die clamping surface of the hot core box die is inwards sunken to form a die internal cavity; one end of the internal cavity is communicated with the cavity, and the other end of the internal cavity extends out of the die along the die to form a second exhaust channel. The utility model is convenient for discharging compressed air by forming the exhaust channel among the die closing surface, the top core bar and the die cavity, and has good molding quality of the core.
Description
Technical Field
The utility model relates to a hot core box mold with an exhaust function, and belongs to the technical field of casting molds.
Background
The hot core box core making process includes injecting sand material compounded with casting sand, thermosetting resin and curing agent into core box with heater to heat the core box to 180-250 deg.c, and the core box has adhesive to be condensed and hardened in short period of time to form core. Moreover, as long as the surface layer of the sand core is hardened by 5-10 mm, the sand core can be taken out from the core box, and the core sand in the central part can harden the residual sand by itself under the action of the residual heat and the heat released by the hardening reaction, thereby providing a very effective method for rapidly producing the medium-small sand core with high dimensional accuracy (the maximum wall thickness of the sand core is generally 50-75 mm).
In the prior art, precoated sand enters a cavity of a die along with compressed air and is solidified to form a core. In the sand shooting process, other cavities except for a sand shooting port in a cavity in the mold are in a closed state, and along with sand shooting, compressed air in the internal cavity can not be completely discharged from the cavity of the mold, so that the manufactured mold core has the problems of local shot loosening or quality defects such as hollow holes and the like. Therefore, a hot core box mold with an exhaust function is needed to solve the problem that the molding quality of the core is poor due to the fact that compressed air cannot be exhausted when the existing hot core box mold is used for core making.
Disclosure of Invention
The utility model provides a hot core box die with an exhaust function, which aims to solve the problems and defects in the prior art, and the first exhaust channel and the second exhaust channel are arranged between a die cavity and the outside of the die so as to generate an exhaust gap between a die combining surface of a first module and a die combining surface of a second module and an exhaust gap between a top core rod and a top core rod mounting hole, thereby ensuring that compressed air can be exhausted from the exhaust gap in the die cavity in the sand shooting process and improving the molding quality of a core.
In order to achieve the above purpose, the present utility model provides the following technical solutions: a hot core box mold with an exhaust function comprises a plurality of sub-modules, wherein after the sub-modules are assembled, a cavity matched with the shape of a core is formed between the sub-modules; the hot core box mould is provided with a sand shooting port; a plurality of top core rod mounting holes are formed in the position, close to the cavity, of the hot core box die, and the top core rod is mounted in each hole; one end of the top core rod mounting hole is communicated with the cavity, and the other end extends out of the die along the die; a gap is reserved between the rod body of the top core rod and the top core rod mounting hole, so that a first exhaust channel is formed; the position of the die clamping surface of the hot core box die is inwards sunken to form a die internal cavity; one end of the internal cavity is communicated with the cavity, and the other end of the internal cavity extends out of the die along the die to form a second exhaust channel.
Specifically, the hot-box mold comprises two sub-modules, which are defined as a first module and a second module; the first module and the second module are of an upper die closing structure and a lower die closing structure, the first module is positioned on the upper side, and the second module is positioned on the lower side.
Specifically, the first module and the second module are respectively provided with a sub-cavity; after the first module and the second module are assembled, the sub-cavities of the first module and the second module form a cavity; the method comprises the steps that on a die joint surface of a first module, a position adjacent to a sub-cavity is recessed inwards to form a first cavity; a plurality of first grooves are formed between one end of the first cavity and the secondary cavity, and a first exhaust hole is formed in the other end of the first cavity and extends out of the first module; the first cavity, the first groove and the first exhaust hole form a second exhaust channel.
Specifically, a top core rod mounting hole is formed in the position, close to the secondary cavity, of the second module, and the shape of the top core rod is matched with that of the top core rod mounting hole.
Specifically, the section of the core pushing rod is of a circular structure, and a plurality of exhaust grooves are arranged at intervals along the outer side of the rod body; the top core rod is arranged in the top core rod mounting hole, and a first exhaust channel is formed between the exhaust groove and the top core rod mounting hole.
Specifically, a plurality of exhaust grooves are arranged in parallel and are uniformly arranged at intervals along the outer side of the top core rod.
Specifically, the depth of the exhaust groove was 0.2mm.
Specifically, the depth of the first groove is 0.2mm, and the width of the first groove is 8-10mm.
Specifically, the aperture of the first exhaust hole is 10mm.
Compared with the prior art, the utility model has the beneficial effects that:
according to the utility model, the inner cavity which is concave inwards is arranged at the die clamping surface of the die, one end of the inner cavity is communicated with the die cavity, and the other end of the inner cavity extends out of the die to form the second exhaust channel. The top core rod mounting hole is arranged with one end communicated with the cavity, the other end extends out of the die, and a plurality of exhaust grooves are arranged on the outer side of the top core rod, so that a first exhaust channel is formed between the top core rod and the top core rod mounting hole. Thereby, compressed air can be discharged from the first exhaust passage and the second exhaust passage in the exhaust process, and the molding quality of the core is improved.
On the basis of the above, a first cavity is formed in the die assembly surface of the first module, a plurality of first grooves are formed between one end of the first cavity and the sub-cavity, a first exhaust hole is formed in the other end of the first cavity, the first exhaust hole extends out of the first module, so that a second exhaust channel is formed, a top core rod mounting hole is formed in the position, close to the sub-cavity, of the second module, a top core rod matched with the second module is mounted in the hole, and a plurality of parallel exhaust grooves are formed in the outer side of the top core rod, so that a first exhaust channel is formed.
On the basis of the above, the first groove, the first exhaust hole and the exhaust groove are defined in size specifications. When the compressed air is discharged from the cavity through the first exhaust channel and the second exhaust channel, the stability of sand injection pressure is ensured and the molding quality of the core is improved while the exhaust is realized through the change of the cross section area of the exhaust channel.
Drawings
Fig. 1 is a schematic structural diagram of a hot box mold with an exhaust function according to the present embodiment;
fig. 2 is a top view of the heat core box mold with the exhaust function of the present embodiment;
FIG. 3 is a cross-sectional view at A-A of FIG. 2 (top core rod not shown);
fig. 4 is a cross-sectional view of the top core rod structure of the hot-box mold with the air-exhausting function of the present embodiment.
In the figure: 1. a first module; 2. a second module; 3. a sand injection port; 4. a first groove; 5. a first exhaust hole; 6. pushing the core rod; 7. a cavity; 8. a top core bar mounting hole; 9. and an exhaust groove.
Detailed Description
The utility model will be further elucidated with reference to the drawings in the embodiments of the utility model.
Referring to fig. 1-4, the embodiment discloses a hot core box mold with an exhaust function, which comprises a plurality of sub-modules, wherein after the sub-modules are assembled, a cavity 7 which is matched with the shape of a core is formed between the sub-modules; the hot core box mould is provided with a sand shooting port 3; a plurality of top core rod mounting holes 4 are formed in the position, close to the cavity, of the hot core box die, and top core rods 6 are mounted in the holes; one end of the top core rod mounting hole 8 is communicated with the cavity 7, and the other end extends out of the die along the die; a gap is reserved between the rod body of the top core rod and the top core rod mounting hole 8 to form a first exhaust channel; the position of the die clamping surface of the hot core box die is inwards sunken to form a die internal cavity; one end of the internal cavity is communicated with the cavity 7, and the other end of the internal cavity extends out of the die along the die to form a second exhaust channel.
Further, the hot box mold comprises two sub-modules, defined as a first module 1 and a second module 2; the first module 1 and the second module 2 are of an upper and a lower die closing structure, the first module is positioned on the upper side, and the second module is positioned on the lower side.
Further, the first module 1 and the second module 2 are respectively provided with a sub-cavity; after the first module 1 and the second module 2 are assembled, the sub-cavities of the first module 1 and the second module 2 form a cavity 7; on the die-bonding surface of the first module 1, a position adjacent to the sub-cavity is inwards recessed to form a first cavity 3; a plurality of first grooves 4 are formed between one end of the first cavity 3 and the secondary cavity, and a first exhaust hole 5 is formed at the other end of the first cavity and extends out of the first module; the first cavity 3, the first groove 4 and the first exhaust hole 5 constitute a second exhaust passage.
Further, a top core rod mounting hole 8 is formed in the second module 2 near the sub-cavity, and the shape of the top core rod 6 is matched with that of the top core rod mounting hole 8.
Further, the cross section of the top core rod 6 is of a circular structure, and a plurality of exhaust grooves 9 are arranged at intervals along the outer side of the rod body; the top core rod 6 is installed in the top core rod installation hole 8, and a first exhaust channel is formed between the exhaust groove 9 and the top core rod installation hole 8.
Further, a plurality of exhaust grooves 9 are arranged in parallel and are uniformly distributed along the outer side of the top core rod 6 at intervals.
Further, the depth of the exhaust groove 9 was 0.2mm.
Further, the groove depth of the first groove 4 is 0.2mm, and the groove width is 8-10mm.
Further, the aperture of the first exhaust hole 5 is 10mm.
Working principle: 1. before the hot core box die with the exhaust function is used, firstly, a counter bore with the depth of 10mm is machined inwards at the die clamping face position of the first die block, and the diameter of the bore is smaller than 20mm of the outer contour so as to form a first cavity. Processing 4 first grooves with the thickness of 0.2mm and the width of 8-10mm in the direction of the first module towards the sub-cavity, and discharging compressed gas in the sub-cavity into the counter bore, and processing a first vent hole with the diameter of 10mm on the processed counter bore again until the die is perforated for exhausting gas in the sub-cavity;
the top core rod mounting holes are uniformly distributed in the sub-cavity of the second module of the die, the corresponding top core rod is matched, the surface of the top core rod with a round section is processed into an exhaust groove, the depth of the exhaust groove is 0.2mm, and the gap between the exhaust groove and the top core rod mounting holes is utilized, so that the effect of exhausting compressed air in the die cavity is achieved.
2. When the mold is used, after the first module and the second module of the mold are assembled and fixed, in the sand shooting process, compressed air in the cavity can be discharged by utilizing the second exhaust channel between the first module and the second module assembling surface and the first exhaust channel between the top core rod and the top core rod mounting hole, so that the compressed air in the mold is completely discharged, and the complete and smooth mold core with good appearance is manufactured, and the molding quality is good.
While the embodiments of the present utility model have been described in detail with reference to the examples, the present utility model is not limited to the above embodiments, and it will be apparent to those skilled in the art that various equivalent changes and substitutions can be made therein without departing from the principles of the present utility model, and such equivalent changes and substitutions should also be considered to be within the scope of the present utility model.
Claims (9)
1. A hot core box mold with an exhaust function comprises a plurality of sub-modules, wherein after the sub-modules are assembled, a cavity matched with the shape of a core is formed between the sub-modules; the hot core box die is provided with a sand shooting port; the method is characterized in that: the hot core box die is provided with a plurality of top core rod mounting holes near the die cavity, and the top core rod is mounted in the holes; one end of the top core rod mounting hole is communicated with the cavity, and the other end of the top core rod mounting hole extends out of the die along the die; a gap is reserved between the rod body of the top core rod and the top core rod mounting hole, so that a first exhaust channel is formed; the position of the die clamping surface of the hot core box die is inwards sunken to form a die internal cavity; one end of the inner cavity is communicated with the cavity, and the other end of the inner cavity extends out of the die along the die to form a second exhaust channel.
2. The hot box mold with the exhaust function according to claim 1, wherein: the hot box mold comprises two sub-modules, which are defined as a first module and a second module; the first module and the second module are of an upper die closing structure and a lower die closing structure, the first module is positioned on the upper side, and the second module is positioned on the lower side.
3. A hot box mold with a venting function according to claim 2, characterized in that: the first module and the second module are respectively provided with a sub-cavity; after the first module and the second module are assembled, the sub-cavities of the first module and the second module form the cavity; the method comprises the steps that on a die joint surface of a first module, a position adjacent to a sub-cavity is recessed inwards to form a first cavity; a plurality of first grooves are formed between one end of the first cavity and the secondary cavity, and a first exhaust hole is formed in the other end of the first cavity and extends out of the first module; the first cavity, the first groove and the first exhaust hole form the second exhaust channel.
4. A hot box mold with a venting function according to claim 3, characterized in that: and the second module is provided with the top core rod mounting hole at a position close to the secondary cavity, and the shape of the top core rod is matched with the shape of the top core rod mounting hole.
5. The hot box mold with the exhaust function according to claim 4, wherein: the section of the core pushing rod is of a circular structure, and a plurality of exhaust grooves are formed in the outer side of the rod body at intervals; the top core rod is installed in the top core rod installation hole, and the first exhaust channel is formed between the exhaust groove and the top core rod installation hole.
6. The hot box mold with the exhaust function according to claim 5, wherein: the exhaust grooves are arranged in parallel and are uniformly arranged at intervals along the outer side of the top core rod.
7. The hot box mold with the exhaust function according to claim 5, wherein: the depth of the exhaust groove is 0.2mm.
8. A hot box mold with a venting function according to claim 3, characterized in that: the depth of the first groove is 0.2mm, and the width of the first groove is 8-10mm.
9. The hot box mold with the exhaust function according to claim 8, wherein: the aperture of the first exhaust hole is 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320981982.1U CN219746245U (en) | 2023-04-26 | 2023-04-26 | Hot core box die with exhaust function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320981982.1U CN219746245U (en) | 2023-04-26 | 2023-04-26 | Hot core box die with exhaust function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219746245U true CN219746245U (en) | 2023-09-26 |
Family
ID=88086633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320981982.1U Active CN219746245U (en) | 2023-04-26 | 2023-04-26 | Hot core box die with exhaust function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219746245U (en) |
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2023
- 2023-04-26 CN CN202320981982.1U patent/CN219746245U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231127 Address after: 213000 Block C, No. 258, Wuyi Road, economic development zone, Changzhou City, Jiangsu Province Patentee after: CRRC CHANGZHOU AUTO PARTS CO.,LTD. Patentee after: CHANGZHOU LANGRUI CASTING Co.,Ltd. Address before: 213025 Block C, No. 258, Wuyi Road, economic development zone, Changzhou City, Jiangsu Province Patentee before: CRRC CHANGZHOU AUTO PARTS CO.,LTD. |