CN208450595U - A kind of negative-pressure los mould casting running gate system - Google Patents
A kind of negative-pressure los mould casting running gate system Download PDFInfo
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- CN208450595U CN208450595U CN201821173973.5U CN201821173973U CN208450595U CN 208450595 U CN208450595 U CN 208450595U CN 201821173973 U CN201821173973 U CN 201821173973U CN 208450595 U CN208450595 U CN 208450595U
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- ladle
- nitrogen
- negative
- molten metal
- moving trolley
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Abstract
The utility model discloses a kind of negative-pressure los mould casting running gate systems, including moving trolley, ladle is provided in moving trolley, the bottom of ladle is provided with gate spool, and flow control member is provided on gate spool, is provided with sealing cover at the top of ladle, nitrogen storage tank is provided in moving trolley, nitrogen storage tank is connected with nitrogen tube, and nitrogen tube is communicated with the inner cavity of ladle, and flow control valve is provided in nitrogen tube.Ladle is sealed by sealing cover, in casting, molten metal in ladle gradually decreases, liquid level is gradually reduced, the nitrogen in nitrogen storage tank is put into ladle at this time, utilize the space above nitrogen filling metal bath surface, it can guarantee that there is enough pressure in ladle, molten metal can successfully flow out, extraneous air is avoided simultaneously enters ladle, to prevent molten metal surface oxidation phenomenon, the waste of molten metal is advantageously reduced, while reducing molten metal adverse effect caused by casting quality after oxidation.
Description
Technical field
The utility model belongs to lost foam casting apparatus field, especially a kind of negative-pressure los mould casting running gate system.
Background technique
Lost foam casting (also known as cavityless casting) is by paraffin similar with casting dimension shape or bubbles model bonding group
Synthetic model cluster is embedded in vibration molding in drystone sand, is poured under negative pressure, make model gas after brushing fireproof coating and drying
Change, liquid metals occupies modal position, and the novel casting method of casting is formed after solidification is cooling.Lost foam casting is a kind of nearly nothing
The new process of surplus, precise forming, the technique without modulus, without die joint, without sand core, thus casting do not have overlap, burr and
Pattern draft, and reduce as type core combination and caused by scale error.Surface roughness are up to Ra3.2 to 12.5 μ
m；Casting dimension accuracy is up to CT7 to 9；Machining allowance is up to 1.5 to 2mm, can greatly reduce the expense of machining, and pass
System sand mould casting method is compared, it is possible to reduce 40% to 50% machining time, complicated especially suitable for motor housing etc.
The casting of part.
Lost foam casting process are as follows: original foamed bead-bead prefoam-bead curing-bead foam molding-mould
Type dip-coating-vibration molding-casting displacement-cooling and demolding, wherein casting displacement is particularly significant step, is usually used
Special running gate system injects liquid metal in sandbox, and existing negative-pressure los mould casting generally comprises movement with running gate system
Trolley and the ladle being arranged in moving trolley, in ladle, the bottom of ladle is provided with molten metal high temperature fluent metal
Inject the gate spool of sandbox.Existing ladle leakproofness is poor, and extraneous air can enter in ladle, and oxygen will lead to molten metal table
Face oxidation, causes a large amount of molten metal to waste.
Utility model content
The purpose of this utility model is to provide a kind of negative-pressure los mould casting running gate systems, can reduce the oxygen of molten metal
Change, improves the utilization rate of molten metal.
Purpose of the utility model is realized as follows: a kind of negative-pressure los mould casting running gate system, including movement are small
Vehicle is provided with ladle in the moving trolley, and the bottom of the ladle is provided with gate spool, is provided with flow on the gate spool
Control piece,
It is provided with dismountable sealing cover at the top of the ladle, nitrogen storage tank is provided in the moving trolley, it is described
Nitrogen tube is connected on nitrogen storage tank, the nitrogen tube is connected with the side wall at the top of ladle, and the inner cavity phase of nitrogen tube and ladle
It is logical, flow control valve is provided in the nitrogen tube.
Further, the gate spool includes inner tube and thermal-insulation coat, and the thermal-insulation coat covers except inner tube, and is kept the temperature
It is provided with incubation cavity between housing and inner tube, is provided with electric heating wire in the incubation cavity；In the flow control member is set to
The upper end of pipe.
Further, the outer wall two sides of the ladle are provided with mounting rack, and a pair of of support is provided in the moving trolley
Frame, the ladle are set between two support frames, and the mounting rack of ladle is installed on support frame, the end of the shaft by shaft
Portion is provided with thread segment, and the fastening nut being threadedly engaged with thread segment is provided at the thread segment, and the top of the ladle connects
It is connected to the driving mechanism for pushing ladle to rotate around shaft.
Further, the driving mechanism is hydraulic cylinder.
Further, the side wall at the top of the ladle is provided with quick disconnecting joint, and the nitrogen tube is hose, and nitrogen tube with
Quick disconnecting joint is connected.
Further, the edge of the sealing cover lower surface is provided with the seal groove of annular, and the section of the seal groove is in
The upper port of the concave shape of handstand, the ladle is inserted into seal groove.
Further, the flow control member is electromagnetic pump.
The beneficial effects of the utility model are: ladle is sealed by sealing cover, in casting, molten metal in ladle by
Decrescence few, liquid level is gradually reduced, and the nitrogen in nitrogen storage tank is put into ladle at this time, above nitrogen filling metal bath surface
Space can guarantee there is enough pressure in ladle, and molten metal can successfully flow out, at the same avoid extraneous air into
Enter ladle, to prevent molten metal surface oxidation phenomenon, advantageously reduce the waste of molten metal, while reducing the metal after oxidation
Liquid adverse effect caused by casting quality.
Detailed description of the invention
Fig. 1 is the schematic front view of the utility model.
Fig. 2 is the schematic side view of the utility model.
Appended drawing reference: 1-moving trolley；2-ladles；3-gate spools；31-inner tubes；32-thermal-insulation coats；33-electricity add
Heated filament；4-flow control members；5-sealing covers；51-seal grooves；6-nitrogen storage tanks；7-nitrogen tubes；8-flow control valves；
9-mounting racks；10-support frames；11-shafts；12-fastening nuts；13-driving mechanisms；14-quick disconnecting joints.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
As depicted in figs. 1 and 2, a kind of negative-pressure los mould casting running gate system of the utility model, including moving trolley
1, ladle 2 is provided in the moving trolley 1, and the bottom of the ladle 2 is provided with gate spool 3, is provided on the gate spool 3
Flow control member 4.Moving trolley 1 can use tractor tethered sliding using the car body that can move and have certain altitude
The motor equal power device power mobile as moving trolley 1 can also be arranged to pouring position in trolley 1 in moving trolley 1.
When casting, moving trolley 1 has 4 longer supporting legs, can move to the top of sandbox, and ladle 2 is located at the top of sandbox,
Guarantee that molten metal can automatically flow into casting channel.Ladle 2 uses existing ladle, and flow control member 4 can be used existing
Any valve or pump for being used to convey high temperature fluent metal, it is preferred that the flow control member 4 is electromagnetic pump, and electromagnetic pump utilizes
Modern magnetomechanics principle is realized contactless indirect drive using permanent magnet, so that core component be avoided to contact high-temperature liquid metal, is had
Conducive to guarantee service life, while leakproofness is strong.
The top of the ladle 2 is provided with dismountable sealing cover 5, is provided with nitrogen storage tank 6 in the moving trolley 1,
For nitrogen storage tank 6 for storing compressed nitrogen, nitrogen is inert gas, will not be reacted with molten metal, to can avoid metal
Liquid oxidation.Nitrogen tube 7 is connected on the nitrogen storage tank 6, the nitrogen tube 7 is connected with the side wall at 2 top of ladle, and nitrogen tube
7 communicate with the inner cavity of ladle, are provided with flow control valve 8 in the nitrogen tube 7.Molten metal in smelting furnace is being transferred to steel
When in packet 2, can first turn-on flow rate regulating valve 8, nitrogen is filled with ladle 2, the air in ladle 2 is discharged using nitrogen, then
The metal liquid in smelting furnace is transferred in ladle 2 again, the height of metal liquid is lower than the junction of nitrogen tube 7 and ladle 2,
Sealing cover 5 is covered again, prevents extraneous air from entering ladle 2.When casting, moving trolley 1 is moved at sandbox, guarantees to pour
Note pipe 3 is located at the top at sprue gate, is then turned on flow control member 4, and the molten metal in ladle 2 flows into casting by gate spool 3
Mouthful, turn-on flow rate regulating valve 8 while turn-on flow rate control piece 4, with the reduction of metal liquid in ladle 2, liquid level decline, nitrogen
Nitrogen in gas storage tank 6 enters ladle 2, fills the space between molten metal and sealing cover 5, makes have enough pressures in ladle 2
Power guarantees that molten metal is smoothly discharged, while preventing extraneous air from entering in ladle 2 and molten metal is caused to be oxidized, and is conducive to
Reduce the waste of molten metal.
One ladle 2 will generally be poured multiple sandboxes, and meeting rapid cooling, is unfavorable for guaranteeing when molten metal passes through gate spool 3
Pouring temperature, while after pouring a sandbox, need the regular hour that can just be moved to another sandbox, gate spool 3
The remaining molten metal of inner wall may cool and solidify, and become slag inclusion when subsequent casting, influence the quality of casting, therefore, described to pour
Infusing pipe 3 includes inner tube 31 and thermal-insulation coat 32, and thermal-insulation coat 32 uses existing conventional heat preservation material, the thermal-insulation coat
32 sets except inner tube 31, and are provided with incubation cavity between thermal-insulation coat 32 and inner tube 31, be provided in the incubation cavity electricity plus
Heated filament 33；The flow control member 4 is set to the upper end of inner tube 31.When starting casting, electric heating wire 33 is powered on, electricity
Heater strip 33 generates heat, guarantees that the molten metal for flowing through inner tube 31 remains suitable temperature, and prevent 31 inner wall of inner tube
Molten metal solidification, guarantees castability.
After casting complete, molten metal remaining in ladle 2 is poured out for convenience, in the outer wall two sides of the ladle 2
Be provided with mounting rack 9, be provided with a pair of supporting 10 in the moving trolley 1, the ladle 2 be set to two support frames 10 it
Between, and the mounting rack 9 of ladle 2 is installed on support frame 10 by shaft 11, shaft 11 is located at the middle part of ladle 2, the shaft 11
End be provided with thread segment, the fastening nut 12 being threadedly engaged with thread segment is provided at the thread segment, the ladle 2
Top is connected with the driving mechanism 13 for pushing ladle 2 to rotate around shaft 11.In casting, rotational fastener nut 12, using tight
Gu nut 12 compresses support frame 10, prevent shaft 11 from rotating automatically, guarantees the stability of ladle 2.Needing will be remaining in ladle 2
When molten metal is poured out, start driving mechanism 13, driving mechanism 13 pushes the horizontal position of 2 rotation of ladle, the molten metal in ladle 2
It will successfully be flowed out from 2 oral area of ladle.
The driving mechanism 13 is hydraulic cylinder.Specifically, vertical positioning column is provided in moving trolley 1, on positioning column
The cylinder body for being provided with the sliding block being slidably matched with positioning column perhaps sleeve hydraulic cylinder is fixedly connected with sliding block or sleeve, piston
The outer wall of bar and ladle 2 is hinged.
The side wall at 2 top of the ladle is provided with quick disconnecting joint 14, and the nitrogen tube 7 is hose, and nitrogen tube 7 and Quick Release
Connector 14 is connected, and quick disconnecting joint 14 is fixed on ladle 2, facilitates the dismounting of nitrogen tube 7 Yu ladle 2.
Further, the edge of 5 lower surface of sealing cover is provided with the seal groove 51 of annular, and the seal groove 51 is cut
Seal groove 51 is inserted into the concave shape to stand upside down, the upper port of the ladle 2 in face.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (7)
1. a kind of negative-pressure los mould casting running gate system, including moving trolley (1), steel is provided on the moving trolley (1)
It wraps (2), the bottom of the ladle (2) is provided with gate spool (3), flow control member (4) are provided on the gate spool (3),
It is characterized in that: being provided with dismountable sealing cover (5) at the top of the ladle (2), be provided with nitrogen on the moving trolley (1)
Storage tank (6) is connected with nitrogen tube (7) on the nitrogen storage tank (6), the nitrogen tube (7) and the side wall phase at the top of ladle (2)
Even, and nitrogen tube (7) is communicated with the inner cavity of ladle, is provided with flow control valve (8) on the nitrogen tube (7).
2. a kind of negative-pressure los mould casting running gate system according to claim 1, it is characterised in that: the gate spool
It (3) include inner tube (31) and thermal-insulation coat (32), the thermal-insulation coat (32) covers except inner tube (31), and thermal-insulation coat (32)
It is provided with incubation cavity between inner tube (31), electric heating wire (33) are provided in the incubation cavity；The flow control member (4) sets
It is placed in the upper end of inner tube (31).
3. a kind of negative-pressure los mould casting running gate system according to claim 1, it is characterised in that: the ladle (2)
Outer wall two sides be provided with mounting rack (9), be provided with a pair of supporting (10) on the moving trolley (1), the ladle (2) sets
It is placed between two support frames (10), and the mounting rack (9) of ladle (2) is installed on support frame (10) by shaft (11), described turn
The end of axis (11) is provided with thread segment, and the fastening nut (12) being threadedly engaged with thread segment, institute are provided at the thread segment
The top for stating ladle (2) is connected with the driving mechanism (13) for pushing ladle (2) to rotate around shaft (11).
4. a kind of negative-pressure los mould casting running gate system according to claim 3, it is characterised in that: the driving mechanism
It (13) is hydraulic cylinder.
5. a kind of negative-pressure los mould casting running gate system according to claim 3, it is characterised in that: the ladle (2)
The side wall at top is provided with quick disconnecting joint (14), and the nitrogen tube (7) is hose, and nitrogen tube (7) and quick disconnecting joint (14) phase
Connection.
6. a kind of negative-pressure los mould casting running gate system according to claim 1, it is characterised in that: the sealing cover
(5) edge of lower surface is provided with the seal groove (51) of annular, and the section of the seal groove (51) is described in the concave shape to stand upside down
The upper port of ladle (2) is inserted into seal groove (51).
7. a kind of negative-pressure los mould casting running gate system according to claim 1, it is characterised in that: the flow control
Part (4) is electromagnetic pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821173973.5U CN208450595U (en) | 2018-07-24 | 2018-07-24 | A kind of negative-pressure los mould casting running gate system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821173973.5U CN208450595U (en) | 2018-07-24 | 2018-07-24 | A kind of negative-pressure los mould casting running gate system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208450595U true CN208450595U (en) | 2019-02-01 |
Family
ID=65179586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821173973.5U Expired - Fee Related CN208450595U (en) | 2018-07-24 | 2018-07-24 | A kind of negative-pressure los mould casting running gate system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208450595U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114029480A (en) * | 2021-11-19 | 2022-02-11 | 崔荣凯 | Aluminum alloy casting device for metal manufacturing |
-
2018
- 2018-07-24 CN CN201821173973.5U patent/CN208450595U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114029480A (en) * | 2021-11-19 | 2022-02-11 | 崔荣凯 | Aluminum alloy casting device for metal manufacturing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190201 Termination date: 20210724 |
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| CF01 | Termination of patent right due to non-payment of annual fee |