CN214392299U

CN214392299U - Vacuum casting system

Info

Publication number: CN214392299U
Application number: CN202120435699.XU
Authority: CN
Inventors: 许其盛
Original assignee: Shanghai Hesheng Machinery Co ltd
Current assignee: Shanghai Hesheng Machinery Co ltd
Priority date: 2021-02-26
Filing date: 2021-02-26
Publication date: 2021-10-15
Anticipated expiration: 2031-02-26

Abstract

The utility model relates to a field of foundry goods production discloses a vacuum casting system, and it includes casting die utensil, be provided with the die cavity in the casting die utensil, casting die utensil top be provided with the sprue gate of die cavity intercommunication, still be provided with on the casting die utensil with the evacuation pipe of die cavity intercommunication, be provided with the ooff valve on the evacuation pipe, evacuation pipe keeps away from casting die utensil's one end is connected with evacuation equipment, casting die utensil top goes up and down to be provided with the material jar, both ends form dog-house and feed opening respectively about the material jar, the feed opening of material jar is through supporting tight intercommunication casting die utensil's sprue gate, flexible being provided with in the material jar is used for plugging up the jam pole of feed opening. This application has the effect that promotes and fills the type completeness and avoid forming the gas pocket in the foundry goods.

Description

Vacuum casting system

Technical Field

The application relates to the field of casting production, in particular to a vacuum casting system.

Background

The casting is a metal molding object obtained by various casting methods, namely, the smelted liquid metal is poured into a casting mold prepared in advance by pouring, injecting, sucking or other casting methods, and after cooling, the casting is subjected to subsequent processing means such as grinding and the like, so that the object with certain shape, size and performance is obtained.

In the related art, a worker puts metal into a container, then puts the container into a high-temperature furnace to heat the metal to liquid metal, then takes out the container with a clamp, injects the liquid metal into a mold prepared in advance by a manual pouring method, and takes out a formed casting from the mold after the liquid metal is solidified.

In view of the above-mentioned related technologies, the inventor believes that after liquid metal is injected into a mold, the liquid metal is difficult to completely fill the mold in the mold due to the air still existing in the molding cavity in the mold, so that air holes are formed in the casting, and the quality of the casting is affected.

SUMMERY OF THE UTILITY MODEL

In order to ensure the complete mold filling and avoid forming air holes in the casting, the application provides a vacuum casting system.

The application provides a vacuum casting system adopts following technical scheme:

the utility model provides a vacuum casting system, includes casting die utensil, be provided with the die cavity in the casting die utensil, casting die utensil top be provided with the sprue gate of die cavity intercommunication, still be provided with on the casting die utensil with the evacuation tube of die cavity intercommunication, be provided with the ooff valve on the evacuation tube, evacuation tube keeps away from casting die utensil's one end is connected with evacuation equipment, casting die utensil top goes up and down to be provided with the material jar that is used for holding metal solution, both ends form dog-house and feed opening respectively about the material jar, the feed opening of material jar is through supporting tight sealed intercommunication casting die utensil's sprue gate, flexible being provided with in the material jar is used for plugging up the choke rod of feed opening.

Through adopting above-mentioned technical scheme, during the use, utilize the jam pole earlier to block up the feed opening, the casting gate of sealed casting die utensil opens the evacuation pipe again, starts evacuation equipment, makes into vacuum environment with the shaping intracavity, closes the evacuation pipe again, closes evacuation equipment, removes the jam pole, opens the feed opening, under the pressure differential effect, the metallic solution in the material jar inhales to the shaping intracavity to realize the better shaping of metallic solution in the shaping intracavity, the probability of the formation gas pocket in the greatly reduced foundry goods.

Preferably, a transverse plate is fixed in the feeding port along the radial direction of the feeding port, and two sides of the transverse plate are hinged with turnover plates for closing the feeding port.

By adopting the technical scheme, after the metal solution is injected into the charging bucket from the feeding port, the feeding port is closed by the turnover cover plate, so that the convection between the metal solution and air is reduced, and the heat loss of the metal solution is reduced.

Preferably, the material jar external fixation has a jar frame, the jar frame in it is used for the drive to throw material mouthful department and is fixed with what the motion of jamming rod drives actuating cylinder, the jamming rod is kept away from the one end of casting die runs through the diaphragm with it is fixed to drive actuating cylinder's piston rod.

Through adopting above-mentioned technical scheme, the concertina movement that utilizes actuating cylinder drives the concertina movement of jam pole to the realization is opened and is closed the control to the feed opening.

Preferably, be fixed with the holding ring on the tank tower, the material jar peg graft set up in the holding ring, the tank tower is close to the one end of casting die utensil can be dismantled and is connected with the end plate, the material jar the feed opening support tightly set up in on the end plate, on the end plate with the through-hole has been seted up to the corresponding position of feed opening.

Through adopting above-mentioned technical scheme, utilize holding ring and end plate to realize the jar can the dismantlement of frame fixed.

Preferably, the one end that the material jar is close to casting die utensil is provided with sealed flat plate portion, the feed opening is seted up in on the sealed flat plate portion, sealed flat plate portion is close to the one end laminating of casting die utensil supports tightly in the end plate is kept away from the side of casting die utensil.

Through adopting above-mentioned technical scheme, through sealed flat plate portion, increase feed opening department and the sealed area of supporting tightly of end plate to effectively prevent that metal solution from revealing from end plate and material jar within a definite time.

Preferably, one end of the tank frame, which is far away from the casting mold, is fixed with a lifting part, and the tank frame is connected with a lifting device through the lifting part.

By adopting the technical scheme, the lifting device is connected with the lifting part to drive the tank frame and the charging bucket to move up and down.

Preferably, the casting mold comprises a fixed mold and a movable mold, an upper mold core and a lower mold core are respectively fixed in the fixed mold and the movable mold, and the upper mold core and the lower mold core are mutually spliced to form the molding cavity.

By adopting the technical scheme, different upper mold cores and lower mold cores are fixed in the fixed mold and the movable mold to process castings in different shapes.

Preferably, the evacuation tube is arranged on the fixed die.

Through adopting above-mentioned technical scheme, the cover half is fixed to be set up, need not to remove, sets up the evacuation pipe on the cover half, can improve the stability of evacuation pipe and evacuation equipment work.

Preferably, a sealing sleeve for improving the communication sealing performance is arranged at the casting opening.

Through adopting above-mentioned technical scheme, improve the end plate and press the back on casting die utensil, the intercommunication leakproofness between through-hole and the casting gate.

In summary, the present application includes at least one of the following beneficial technical effects:

the molding cavity is vacuumized in advance through the vacuumizing equipment, so that the metal solution can be better filled into the molding cavity, the completeness of mold filling is improved, and air holes in a casting are greatly reduced;

the material tank is detachably fixed in the tank frame by utilizing the positioning ring and the end plate, so that the material tank is convenient to detach and replace;

through all setting up flip board in dog-house both sides, be convenient for add metallic solution in to the charging bucket from dog-house both sides, in addition, after having annotated metallic solution, utilize flip board to close the dog-house, reduce the convection current of metallic solution and air to reduce the thermal scattering and disappearing of metallic solution.

Drawings

Fig. 1 is a schematic structural view of a vacuum casting system according to an embodiment of the present application.

Fig. 2 is a sectional view taken along line a-a of fig. 1.

Fig. 3 is a partially enlarged view of a portion B in fig. 2.

Description of reference numerals: 1. a molding cavity; 2. a casting gate; 3. vacuumizing a tube; 4. an on-off valve; 5. vacuumizing equipment; 6. a charging bucket; 7. a feeding port; 8. a feeding port; 9. a jamming rod; 10. a transverse plate; 11. turning over a cover plate; 12. a tank rack; 13. a driving cylinder; 14. a positioning ring; 15. an end plate; 16. a through hole; 17. sealing the flat plate portion; 18. a lifting part; 19. a hoisting device; 20. fixing a mold; 21. moving the mold; 22. an upper mold core; 23. a lower mold core; 24. and (5) sealing the sleeve.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a vacuum casting system.

Referring to fig. 1 and 2, a vacuum casting system, including casting die utensil, casting die utensil is including fixed cover half 20 and the detachable movable mould 21 that sets up, and movable mould 21 sets up directly over cover half 20, can dismantle respectively in cover half 20 and the movable mould 21 and be fixed with mould core 22 and lower mould core 23, the cavity has all been seted up to the side that mould core 22 and lower mould core 23 are close to each other, cover half 20 compresses tightly the back with movable mould 21 each other, go up mould core 22 and the mutual amalgamation of lower mould core 23, form molding cavity 1 between the two, sprue gate 2 with molding cavity 1 intercommunication is seted up at the top of movable mould 21.

When the casting mold is used, the movable mold 21 is pressed and fixed relative to the fixed mold 20 to drive the upper mold core 22 and the lower mold core 23 to be spliced together to form the molding cavity 1, then molten metal solution is injected into the molding cavity 1 from the casting opening 2, after the metal solution is cooled, the movable mold 21 and the fixed mold 20 are separated, and a casting is taken out; wherein, go up mold core 22 and lower mold core 23 for cooperating the use in pairs, through changing different upper mold core 22 and lower mold core 23, process the foundry goods of different shapes.

A transverse plate 10 is fixed in the feeding port 7 along the radial direction, and two sides of the transverse plate 10 are hinged with turnover cover plates 11 used for closing the feeding port 7, so that the metal solution can be conveniently injected into the charging bucket 6 from two sides of the charging bucket 6, after the metal solution is injected into the charging bucket 6, the turnover cover plates 11 are rotated to close the feeding port 7, and the heat of the metal solution is reduced and dissipated through the contact with air.

Referring to fig. 2 and 3, still be provided with the evacuation pipe 3 with shaping chamber 1 intercommunication on the cover half 20, install on the evacuation pipe 3 and be used for controlling evacuation pipe 3 to be close to shaping chamber 1 one end and open and the ooff valve 4 of closing, the one end that casting die utensil was kept away from to evacuation pipe 3 is connected with evacuation equipment 5, evacuation equipment 5 is the vacuum pump, casting die utensil top goes up and down to be provided with the material jar 6 that is used for holding metallic solution, both ends form dog-house 7 and feed opening 8 respectively about material jar 6, the sprue gate 2 of feed jar 6 through supporting tight intercommunication casting die utensil, sprue gate 2 department is provided with the seal cover 24 that is used for improving the intercommunication leakproofness, coaxial lift is provided with the jam pole 9 that is used for blockking up sprue gate 8 in the material jar 6.

When processing the foundry goods, support the feed opening 8 with sprue gate 2 and tightly communicate earlier, recycle stifled feed opening 8 of shutoff pole 9, the closure of sprue gate 2 has been realized simultaneously, inject metallic solution into material jar 6 through sprue gate 7, adjust the ooff valve 4 to the state of opening evacuation pipe 3 after that, start the work of evacuation equipment 5, make into the shaping intracavity 1 and form the negative pressure, adjust the ooff valve 4 to the state of closing evacuation pipe 3, and finally, raise the shutoff pole 9, open feed opening 8, metallic solution is inhaled to shaping intracavity 1 under the negative pressure effect, thereby promote the integrity that metallic solution filled shaping intracavity 1 greatly, improve foundry goods shaping quality, avoid forming the gas pocket in the foundry goods.

6 external fixation of material jar has a jar frame 12, coaxial two holding rings 14 of being fixed with on jar frame 12, the axis of holding ring 14 is parallel with vertical direction, 6 pegs graft in holding ring 14 of material jar, there is end plate 15 jar one end that 12 are close to casting die utensil through bolted connection, the one end an organic whole that material jar 6 is close to casting die utensil is provided with sealed flat plate portion 17, the coaxial division of feed opening is on sealed flat plate portion 17 of seting up, sealed flat plate portion 17 is close to casting die utensil's one end laminating and supports the side of keeping away from casting die utensil in end plate 15, through-hole 16 has been seted up with the corresponding position of feed opening 8 on the end plate 15. Wherein, the end plate 15 and the positioning ring 14 are adopted to fix the charging bucket 6 on the tank frame 12, if the charging bucket 6 needs to be replaced, the charging bucket 6 can be taken out and replaced only by unscrewing the bolt at the joint of the end part and the tank frame 12 and disassembling the end plate 15; when a casting is manufactured, the metal solution in the material tank 6 sequentially flows into the casting opening 2 through the feed opening 8 and the through hole 16, in order to avoid leakage of the metal solution from the material tank 6 to the end plate 15, the sealing flat plate part 17 is arranged to be attached to and abutted against the end plate 15, and the sealing abutted contact surface is increased, so that leakage of the metal solution in the material tank 6 from the material tank 6 to the end plate 15 is avoided.

Tank tower 12 is fixed with the crossbeam in dog-house 7 department, is fixed with on the crossbeam to be used for driving actuating cylinder 13 of driving that the motion of jam pole 9, and the piston rod that drives actuating cylinder 13 moves along vertical direction, and the one end that casting die was kept away from to jam pole 9 runs through diaphragm 10 and drives actuating cylinder 13's piston rod fixed, utilizes to drive actuating cylinder 13 and drives jam pole 9 elevating movement in material jar 6, opening and closing of control feed opening 8.

Referring to fig. 1 and 2, a lifting part 18 is fixed at one end of the tank frame 12 far away from the casting mold, the lifting part 18 is an inverted V-shaped rod, the tank frame 12 is connected with a lifting device 19 through the lifting part 18, the lifting device 19 comprises a winding roller fixed above the tank frame 12, a steel wire rope is wound around the winding roller, one end of the steel wire rope is fixed on the winding roller, a hook is fixed at the other end of the steel wire rope, the hook is hung at the lifting part 18, and a driving motor for driving the winding roller to rotate is arranged at one end of the winding roller.

The implementation principle of the vacuum casting system in the embodiment of the application is as follows: when parts are cast, the driving motor is utilized to rotate, the tank frame 12 is driven to descend, the end part is pressed on the casting die, the position of the fixed die 20 is fixed, the movable die 21 is arranged on the fixed die 20, and the casting opening 2 on the movable die 21 is convenient to align to the feed opening 8 of the charging bucket 6; after the casting is finished, the driving cylinder 13 is firstly utilized to drive the blocking rod 9 to block the feed opening 8, then the driving motor is utilized to drive the winding roller to rotate, the steel wire rope is wound, the charging bucket 6 is lifted, and the casting mold is conveniently and subsequently disassembled to take out the casting.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A vacuum casting system, characterized by: comprises a casting mould, a molding cavity (1) is arranged in the casting mould, a casting opening (2) communicated with the molding cavity (1) is arranged at the top of the casting mould, the casting mould is also provided with a vacuum-pumping pipe (3) communicated with the molding cavity (1), a switch valve (4) is arranged on the vacuum tube (3), one end of the vacuum tube (3) far away from the casting mould is connected with a vacuum device (5), a charging bucket (6) used for containing metal solution is arranged above the casting mould in a lifting way, the upper end and the lower end of the charging bucket (6) are respectively provided with a feeding port (7) and a discharging port (8), the feed opening (8) of the charging bucket (6) is communicated with the casting opening (2) of the casting mould through abutting and sealing, the telescopic charging bucket (6) is internally provided with a plugging rod (9) for plugging the feed opening (8).

2. A vacuum casting system according to claim 1, wherein: a transverse plate (10) is fixed in the feeding port (7) along the radial direction of the feeding port, and two sides of the transverse plate (10) are hinged with flip plates (11) used for closing the feeding port (7).

3. A vacuum casting system according to claim 2, wherein: the outer fixed of material jar (6) has a jar frame (12), jar frame (12) in dog-house (7) department is fixed with and is used for the drive stifled pole (9) motion drive actuating cylinder (13), stifled pole (9) are kept away from the one end of casting die runs through diaphragm (10) with it is fixed to drive the piston rod that drives actuating cylinder (13).

4. A vacuum casting system according to claim 3, wherein: be fixed with holding ring (14) on jar frame (12), material jar (6) peg graft set up in holding ring (14), jar frame (12) are close to casting die's one end can be dismantled and be connected with end plate (15), material jar (6) feed opening (8) support tightly set up in on end plate (15), on end plate (15) with through-hole (16) have been seted up to the corresponding position of feed opening (8).

5. A vacuum casting system according to claim 4, wherein: the charging bucket (6) is close to the integrative sealed flat plate portion (17) that is provided with of one end of casting die utensil, feed opening (8) are seted up in on the sealed flat plate portion (17), sealed flat plate portion (17) are close to the one end laminating of casting die utensil supports tightly in end plate (15) is kept away from the side of casting die utensil.

6. A vacuum casting system according to claim 3, wherein: and a lifting part (18) is fixed at one end of the tank frame (12) far away from the casting die, and the tank frame (12) is connected with a lifting device (19) through the lifting part (18).

7. A vacuum casting system according to claim 1, wherein: the casting die utensil includes cover half (20) and movable mould (21), cover half (20) with be fixed with in movable mould (21) respectively and go up mold core (22) and lower mold core (23), go up mold core (22) with lower mold core (23) amalgamation each other forms become die cavity (1).

8. A vacuum casting system according to claim 7, wherein: the vacuumizing pipe (3) is arranged on the fixed die (20).

9. A vacuum casting system according to claim 1, wherein: and a sealing sleeve (24) for improving the communication sealing property is arranged at the casting opening (2).