CN210023664U - Structure that core box exhaust hole prevents admitting air on casting - Google Patents
Structure that core box exhaust hole prevents admitting air on casting Download PDFInfo
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- CN210023664U CN210023664U CN201920797555.1U CN201920797555U CN210023664U CN 210023664 U CN210023664 U CN 210023664U CN 201920797555 U CN201920797555 U CN 201920797555U CN 210023664 U CN210023664 U CN 210023664U
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- exhaust
- exhaust hole
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- sealing gasket
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Abstract
The utility model discloses a structure that core box exhaust hole prevents admitting air on casting belongs to casting cold core box mould technical field, has solved the problem that the air admission of last core box exhaust hole influences the psammitolite quality. The core box comprises an upper core box, a core box cavity, an exhaust hole and a lower exhaust plug, wherein the upper exhaust plug is inserted in the upper core box above the exhaust hole, a sealing gasket capable of sliding up and down is arranged between the upper exhaust plug and the exhaust hole, and the diameter of the sealing gasket is larger than that of the exhaust hole. The utility model discloses when satisfying that the exhaust is smooth and easy, effectively prevent that gas from getting into the core box die cavity, improve the psammitolite quality.
Description
Technical Field
The utility model relates to a casting cold core box mould technical field, more specifically say, it relates to a structure that core box exhaust hole prevents admitting air on casting.
Background
As shown in fig. 1, in a cold core box mold of a casting enterprise, an exhaust hole 2 of an upper core box 1 can exhaust air and can also intake air, when sand is shot, the air in a core box cavity 3 is upwards exhausted from the exhaust hole 2, but when triethylamine is blown to cure a sand core, the whole blowing cover covers the upper mold surface of the upper core box 1, and the triethylamine curing agent enters from the sand shooting hole and also enters the core box cavity 3 from the exhaust hole 2. The lower exhaust plug 4 at the bottom of the upper core box 1 can be heated faster than the core box cavity 3 due to the flowing of triethylamine and the heat, and meanwhile, the heating time is long, so that the problem of layering and sand sticking can be caused by the fact that core sand contacting the position of the lower exhaust plug 4 is solidified too fast, and when a core is shot, the exhaust hole 2 can be influenced to exhaust because the lower exhaust plug 4 is stuck, so that the problem that the sand core is partially incomplete in meat deficiency, the sand core is circular and sunken, and the casting is protruded and fleshy is caused, and the quality of the sand core is influenced.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is not enough to the above-mentioned of prior art, provides a structure that core box exhaust hole prevents admitting air on the casting, utilizes this structure can prevent that gas from getting into the core box die cavity, effectively improves the psammitolite quality.
In order to realize the above-mentioned purpose, the utility model provides a structure that admits air is prevented in core box exhaust hole on the casting, including last core box, core box die cavity, exhaust hole and lower exhaust stopper, the grafting is equipped with the exhaust stopper in the last core box of exhaust hole top, last exhaust stopper and exhaust hole between be equipped with gliding sealed pad from top to bottom, sealed diameter of filling up is greater than the diameter in exhaust hole.
As a further improvement, the bottom of the upper exhaust plug is provided with an accommodating cavity, and the exhaust plug is movably arranged in the accommodating cavity.
Furthermore, inserting grooves are formed in the upper core box above the exhaust hole and the upper core box between the exhaust hole and the core box cavity, and the upper exhaust plug and the lower exhaust plug are respectively inserted and installed in the corresponding inserting grooves.
Furthermore, the upper exhaust plug and the lower exhaust plug are inserted in the insertion groove in an interference fit manner.
Furthermore, the center of the bottom surface of the sealing gasket is provided with a plurality of spiral grooves, the outer edges of the spiral grooves correspond to the inner wall of the exhaust hole, and the depth of the spiral grooves is gradually reduced along the outer edges of the sealing gasket.
Further, the bottom of the sealing gasket is embedded with an iron block, and correspondingly, the upper core box at the outer edge of the top of the exhaust hole is embedded with a magnet.
Furthermore, the upper exhaust plug, the sealing gasket, the lower exhaust plug and the exhaust hole are coaxially arranged.
Further, the sealing gasket is a rubber gasket.
Advantageous effects
Compared with the prior art, the utility model, the advantage that has does:
1. the utility model discloses a set up movable sealed the pad, can realize exhausting with its jack-up when exhausting, when admitting air, sealed pad shutoff exhaust hole realizes preventing to admit air, when satisfying that the exhaust is smooth and easy, effectively prevents that gas from getting into the core box die cavity.
2. The utility model discloses a plug and sealed pad on setting up can switch at the in-process that exhausts and admit air, realize gaseous one-way circulation, effectively slow down the time of being heated of lower air release plug to prevent lower air release plug sand-sticking, improve the psammitolite quality.
3. The utility model discloses a sealed bottom surface that fills up sets up the helicla flute to further inject through degree of depth, the width to the helicla flute, help sealed the pad to upwards blow up, ensure that the exhaust is smooth and easy.
4. The utility model discloses a set up the iron plate and set up magnet in exhaust hole top outer fringe on the sealing gasket, can ensure sealed accurate return of filling up and will exhaust the hole shutoff.
Drawings
FIG. 1 is a schematic diagram of a prior art structure;
FIG. 2 is a schematic structural view of the present invention;
fig. 3 is an enlarged schematic view of the bottom structure of the middle sealing gasket of the present invention.
Wherein: 1-upper core box, 2-vent hole, 3-core box cavity, 4-lower vent plug, 5-upper vent plug, 6-sealing gasket, 7-containing cavity, 8-spiral groove, 9-iron block, 10-magnet.
Detailed Description
The invention will be further described with reference to specific embodiments shown in the drawings.
Referring to fig. 2-3, the utility model discloses a structure that admits air is prevented in core box exhaust hole on casting, including last core box 1, core box die cavity 3, exhaust hole 2 and lower air cock 4, wherein, core box die cavity 3 is located last core box 1 bottom, exhaust hole 2 is through lower air cock 4 and core box die cavity 3 intercommunication, it is equipped with air cock 5 to connect in the last core box 1 of exhaust hole 2 top, be equipped with gliding sealed pad 6 from top to bottom between last air cock 5 and exhaust hole 2, and the diameter of sealed pad 6 is greater than the diameter of exhaust hole 2, ensure sealed pad 6 can cover exhaust hole 2 and realize the shutoff. The utility model discloses a plug and sealed pad on setting up can switch at the in-process that exhausts and admit air, realize gaseous one-way circulation, effectively slow down the time of being heated of lower air release plug to prevent lower air release plug sand-sticking, improve the psammitolite quality.
Specifically, be equipped with in last core vent 5 bottom and hold chamber 7, core vent 5 movable mounting holds in chamber 7, goes up core vent 5 and plays the effect of giving vent to anger when exhausting on the one hand, and on the other hand is when exhausting, and sealed 6 is blown the back, plays spacing effect to sealed 6 of filling up, prevents sealed 6 of filling up departure. Inserting grooves are formed in the upper core box 1 above the exhaust hole 2 and the upper core box 1 between the exhaust hole 2 and the core box cavity 3, wherein the upper exhaust plug 5 and the lower exhaust plug 4 are respectively inserted into the corresponding inserting grooves, so that the installation of the exhaust plugs is facilitated, and the phenomenon that the exhaust plugs protrude out of the upper end surface and the lower end surface of the upper core box 1 to influence the molding of the sand core is avoided. And, the upper vent plug 5, the lower vent plug 4 all interference fit pegs graft in the plug-in groove to prevent the vent plug from dropping off.
Preferably, a plurality of spiral grooves 8 are arranged in the center of the bottom surface of the sealing gasket 6, the spiral grooves 8 spirally diffuse towards the outer edge of the sealing gasket 6, the outer edge of each spiral groove 8 corresponds to the inner wall of the exhaust hole 2 to prevent air leakage, the depth and the width of each spiral groove 8 are gradually reduced along the outer edge of the sealing gasket 6 to facilitate exhaust, and when sand shooting is performed, cavity air blows towards the sealing gasket 6 to jack the sealing gasket 6, and meanwhile, the cavity air flows outwards through the spiral grooves 8 to force the sealing gasket 6 to rotate, so that the sealing gasket 6 is blown upwards, and smooth exhaust is ensured.
Further, an iron block 9 is embedded in the bottom of the sealing gasket 6, correspondingly, a magnet 10 is embedded in the upper core box 1 at the outer edge of the top of the exhaust hole 2, the magnet 10 is weak in magnetism, and the magnetic adsorption force of the magnet 10 should be smaller than the pressure of cavity gas on the sealing gasket 6, so that the cavity gas can jack the sealing gasket 6, after sand shooting is completed, the sealing gasket 6 returns under the adsorption matching of the magnet 10 and the iron block 9, and the sealing gasket can be ensured to return accurately to seal the exhaust hole.
The upper exhaust plug 5, the sealing gasket 6 and the lower exhaust plug 4 in the embodiment are coaxially arranged with the exhaust hole 2, so that the cavity gas impacts the sealing gasket from the front side, the balance of the rising of the sealing gasket 6 is improved, and the exhaust is facilitated. The sealing gasket 6 is a rubber gasket, so that the sealing performance of the sealing gasket 6 is improved.
A method for using the structure is that an upper exhaust plug 5 is additionally arranged at the top of each exhaust hole 2, and a movable sealing gasket 6 is arranged between the exhaust hole 2 and the upper exhaust plug 5; when the sand is shot, cavity air in a core box cavity 3 is exhausted through the exhaust hole 2, the sealing gasket 6 is blown up, the cavity air passes through a gap at the outer edge of the sealing gasket 6 and is exhausted through the upper exhaust plug 5, the exhaust is realized, and when the cavity air disappears, the sealing gasket 6 falls back to cover the exhaust hole 2; when the triethylamine is blown to solidify the sand core, the whole blowing hood covers the upper die surface of the upper core box 1, the sealing gasket 6 is tightly attached to the top surface of the exhaust hole 2 under the pressure of the triethylamine curing agent, and the exhaust hole 2 is sealed and blocked, so that air intake is prevented. The utility model discloses a set up movable sealed pad 6, can realize exhausting its jack-up when exhausting, when admitting air, sealed pad 6 can shutoff exhaust hole 2 again, realizes preventing to admit air, when satisfying that the exhaust is smooth and easy, effectively prevents that gas from getting into in the core box die cavity
The above is only a preferred embodiment of the present invention, and it should be noted that for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which will not affect the utility of the invention and the utility of the patent.
Claims (8)
1. The utility model provides a structure that core box exhaust hole prevents admitting air on casting, includes upper core box (1), core box die cavity (3), exhaust hole (2) and lower air plug (4), its characterized in that: the exhaust hole is characterized in that an upper exhaust plug (5) is inserted into the upper core box (1) above the exhaust hole (2), a sealing gasket (6) capable of sliding up and down is arranged between the upper exhaust plug (5) and the exhaust hole (2), and the diameter of the sealing gasket (6) is larger than that of the exhaust hole (2).
2. The vent hole air intake preventing structure of the cast upper core box according to claim 1, characterized in that: the bottom of the upper exhaust plug (5) is provided with an accommodating cavity (7), and the exhaust plug (5) is movably arranged in the accommodating cavity (7).
3. The vent hole air intake preventing structure of the cast upper core box according to claim 1, characterized in that: inserting grooves are formed in the upper core box (1) above the exhaust hole (2) and in the upper core box (1) between the exhaust hole (2) and the core box cavity (3), and the upper exhaust plug (5) and the lower exhaust plug (4) are respectively inserted and installed in the corresponding inserting grooves.
4. The vent hole air intake preventing structure of the cast upper core box according to claim 3, wherein: the upper exhaust plug (5) and the lower exhaust plug (4) are inserted in the insertion groove in an interference fit manner.
5. The vent hole air intake preventing structure of the cast upper core box according to claim 1, characterized in that: the center of the bottom surface of the sealing gasket (6) is provided with a plurality of spiral grooves (8), the outer edges of the spiral grooves (8) correspond to the inner wall of the exhaust hole (2), and the depth and the width of each spiral groove (8) are gradually reduced along the outer edge of the sealing gasket (6).
6. The vent hole air intake preventing structure of the cast upper core box according to claim 5, wherein: the bottom of the sealing gasket (6) is embedded with an iron block (9), correspondingly, the upper core box (1) at the outer edge of the top of the exhaust hole (2) is embedded with a magnet (10).
7. The vent inflow prevention structure for the cast upper core box according to any one of claims 1 to 6, wherein: the upper exhaust plug (5), the sealing gasket (6), the lower exhaust plug (4) and the exhaust hole (2) are coaxially arranged.
8. The vent hole air intake preventing structure of the cast upper core box according to claim 7, wherein: the sealing gasket (6) is a rubber gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920797555.1U CN210023664U (en) | 2019-05-30 | 2019-05-30 | Structure that core box exhaust hole prevents admitting air on casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920797555.1U CN210023664U (en) | 2019-05-30 | 2019-05-30 | Structure that core box exhaust hole prevents admitting air on casting |
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| Publication Number | Publication Date |
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| CN210023664U true CN210023664U (en) | 2020-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920797555.1U Active CN210023664U (en) | 2019-05-30 | 2019-05-30 | Structure that core box exhaust hole prevents admitting air on casting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110039001A (en) * | 2019-05-30 | 2019-07-23 | 广西玉柴机器股份有限公司 | A kind of method and structure casting the anti-air inlet of upper core box gas vent |
-
2019
- 2019-05-30 CN CN201920797555.1U patent/CN210023664U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110039001A (en) * | 2019-05-30 | 2019-07-23 | 广西玉柴机器股份有限公司 | A kind of method and structure casting the anti-air inlet of upper core box gas vent |
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