CN217964698U - External evacuating device of die casting die - Google Patents
External evacuating device of die casting die Download PDFInfo
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- CN217964698U CN217964698U CN202220942433.9U CN202220942433U CN217964698U CN 217964698 U CN217964698 U CN 217964698U CN 202220942433 U CN202220942433 U CN 202220942433U CN 217964698 U CN217964698 U CN 217964698U
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- base plate
- well base
- die
- end cover
- atmospheric pressure
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Abstract
The utility model discloses an external evacuating device of die casting die, its technical scheme main points do, including well base plate, well base plate both sides all are provided with end cover board, two the end cover board pass through the connecting rod with well base plate fixed connection, well base plate with be the atmospheric pressure chamber between the end cover board, the atmospheric pressure chamber is sealed through the closing plate all around, well base plate middle part fixed mounting has the switching pipe, be provided with the intercommunication chamber in the switching pipe, two all be provided with the baffle in the atmospheric pressure chamber, baffle slidable mounting in on the connecting rod, the device has reversal uniformity, and the butt joint pipe homoenergetic at device both ends is connected with die casting die gas port or air extractor, and three cavities become the intercommunication from separating in the change device through atmospheric pressure when beginning bleeding to carry out evacuation in the mould, until cavity and mould internal pressure balance, the cavity cuts off the die-casting metal crystalline grain when avoiding automatically and gets into the air extractor through the exhaust hole.
Description
Technical Field
The utility model relates to a die-casting technical field, in particular to external evacuating device of die casting die.
Background
In the die casting process, high requirements are required on air tightness, and the exhaust structure design of the die casting die has a great influence on the forming of die castings and the production efficiency of workshops. In the die-casting process, if gas remains in the die-casting cavity of the die, the product organization is loose, and the leakage phenomenon appears when the product is subjected to quality inspection, so that the product is judged to be defective or inferior. In the past, designers focus on the aspect of channel design on the research direction of improving the quality of parts, the exhaust structure is often ignored, the production efficiency is reduced due to the structure, the product quality is not guaranteed, the production cost of products is increased, and the economic benefit of enterprises is greatly reduced.
Disclosure of Invention
Not enough to prior art exists, the utility model aims to provide an external evacuating device of die casting die.
The above technical purpose of the present invention can be achieved by the following technical solutions:
the utility model provides an external evacuating device of die casting die, includes well base plate, well base plate both sides all are provided with end cover plate, two end cover plate pass through the connecting rod with well base plate fixed connection, well base plate with be the atmospheric pressure chamber between the end cover plate, the atmospheric pressure chamber is sealed through the closing plate all around, well base plate middle part fixed mounting has the switching pipe, be provided with the intercommunication chamber in the switching pipe, two all be provided with the baffle in the atmospheric pressure chamber, baffle slidable mounting in on the connecting rod, the baffle is close to well base plate one side be provided with the spring that well base plate is connected, two be provided with reverse lazytongs between the baffle.
Preferably, the reverse synchronizing mechanism comprises a cross shaft fixedly installed in the middle of the communicating cavity, a bobbin is rotatably installed on the cross shaft, a torsion spring is arranged between the bobbin and the cross shaft for connection, two bundles of constraint wires are wound on the bobbin in the same direction, and the ends of the two bundles of constraint wires are respectively connected to the two partition plates.
Preferably, the middle parts of the two end cover plates are fixedly provided with butt joint pipes, and the joints of the butt joint pipes and the end cover plates are provided with sealing rings for sealing.
Further preferably, a pressure relief channel is arranged on the side face of the adapter tube and in the middle base plate, the communication cavity is communicated with the outside through the pressure relief channel, a pressure relief valve is arranged at one end, far away from the communication cavity, of the pressure relief channel, and the pressure relief valve is installed on the side face of the middle base plate.
To sum up, the utility model discloses beneficial effect to prior art does: the device has the uniformity of reversing, and the butt joint pipe homoenergetic at device both ends is connected with die casting die gas port or air extractor, need not to pay attention to the device direction when using, is equipped with three cavitys in the device, becomes the intercommunication through the change of atmospheric pressure from the partition when beginning to bleed to carry out the evacuation in the mould, until cavity and mould internal gas pressure balance, the cavity cuts off automatically and avoids that the die-casting has the metallic grain to get into in the air extractor through the exhaust hole occasionally.
Drawings
Fig. 1 is a schematic structural diagram of the embodiment.
Reference numerals: 10. a middle substrate; 11. an end cover plate; 12. a connecting rod; 13. a sealing plate; 14. a pneumatic chamber; 15. butt-joint pipes; 16. a seal ring; 17. a transfer tube; 18. a communicating cavity; 19. a partition plate; 20. a horizontal axis; 21. a bobbin; 22. a constraint line; 23. a pressure relief channel; 24. and (4) releasing the valve.
Detailed Description
The following describes the present invention in further detail with reference to the accompanying drawings.
The utility model provides an external evacuating device of die casting die, includes well base plate 10, well base plate 10 both sides all are provided with end cover plate 11, two end cover plate 11 pass through connecting rod 12 with well base plate 10 fixed connection, well base plate 10 with be atmospheric pressure chamber 14 between the end cover plate 11, atmospheric pressure chamber 14 is sealed through closing plate 13 all around, well base plate 10 middle part fixed mounting has switching pipe 17, be provided with intercommunication chamber 18, two in the switching pipe 17 all be provided with baffle 19 in the atmospheric pressure chamber 14, baffle 19 slidable mounting in on the connecting rod 12, baffle 19 is close to well base plate 10 one side be provided with the spring that well base plate 10 is connected, two baffle 19 can cover switching pipe 17 both ends will intercommunication chamber 18 seals, two be provided with between the baffle 19 and make two reverse synchronization mechanism that 19 do the same motion to opposite direction simultaneously, reverse synchronization mechanism include, fixed mounting in the cross axle 20 at intercommunication chamber 18 middle part, intercommunication chamber 18 middle part fixed mounting has cross axle 20, rotate on the cross axle 20 and install bobbin 21 with be provided with the cross axle 20 is provided with the binding wire 22 on the cross axle, two binding wires are connected on the binding wire respectively there are two binding wire baffle 22.
The middle parts of the two end cover plates 11 are fixedly provided with butt joint pipes 15, the joints of the butt joint pipes 15 and the end cover plates 11 are provided with sealing rings 16 for sealing, the butt joint pipes 15 extend towards the direction away from the air pressure cavity 14, and the butt joint pipes 15 can be inserted into an air outlet of a die casting die or connected with a vacuum-pumping machine.
The side face of the adapter tube 17 and the middle substrate 10 are provided with pressure relief channels 23, the communication cavity 18 is communicated with the outside through the pressure relief channels 23, one end, far away from the communication cavity 18, of each pressure relief channel 23 is provided with a pressure relief valve 24, and the pressure relief valves 24 are installed on the side face of the middle substrate 10.
When the device is used, one of the butt joint pipes 15 is inserted into an exhaust port of a die-casting die, the other butt joint pipe is connected with an air pump, the air pump is started, air pressure in the air pressure cavity 14 close to one side of the air pump is reduced, so that pressure difference is formed between the air pressure cavity and the communicating cavity 18, the air pressure pushes the partition plate 19 between the air pressure cavity and the communicating cavity to slide, the bobbin 21 is driven to rotate through the constraint line 22, the other partition plate 19 can slide under the action of the spring, the two air pressure cavities 14 are communicated with the communicating cavity 18, air pumping from the die is achieved, the two partition plates 19 can be kept in an open state by the pumped air, the bobbin 21 rotates under the action of the torsion spring until the air in the die is pumped out, and when the air pressure cavities 14 and the communicating cavity 18 are stably in a vacuum state, and the two partition plates 19 are pulled to slide to separate the air pressure cavities 14 from the communicating cavity 18.
As the molten metal is injected into the mold, the pressure in the mold and the pressure chamber 14 communicating therewith increases, thereby pressing the partition plate 19 on the same side against the adapter tube 17 to prevent gas from leaking thereinto and to prevent some metal grains from entering the gas extractor.
After the die casting is completed, the die is opened to restore the normal air pressure in the air pressure chamber 14 connected with the die, and at this time, the pressure relief valve 24 can be adjusted to restore the normal air pressure in the communicating chamber 18, so that the next air extraction operation can be carried out.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention, which is defined by the appended claims.
Claims (4)
1. The utility model provides an external evacuating device of die casting die, its characterized in that, includes well base plate (10), well base plate (10) both sides all are provided with end cover board (11), two end cover board (11) through connecting rod (12) with well base plate (10) fixed connection, well base plate (10) with be atmospheric pressure chamber (14) between end cover board (11), atmospheric pressure chamber (14) are sealed through closing plate (13) all around, well base plate (10) middle part fixed mounting has switching pipe (17), be provided with intercommunication chamber (18) in switching pipe (17), two all be provided with baffle (19) in atmospheric pressure chamber (14), baffle (19) slidable mounting in on connecting rod (12), baffle (19) be close to well base plate (10) one side be provided with the spring that well base plate (10) are connected, be provided with reverse synchronization mechanism between baffle (19).
2. The external vacuum extractor of die casting die of claim 1, characterized in that the reverse synchronizing mechanism comprises a cross shaft (20) fixedly mounted in the middle of the communicating cavity (18), a bobbin (21) is rotatably mounted on the cross shaft (20), a torsion spring is arranged between the bobbin (21) and the cross shaft (20) for connection, two bundles of constraint lines (22) are wound on the bobbin (21) in the same direction, and the ends of the two bundles of constraint lines (22) are respectively connected to the two partition plates (19).
3. The external vacuum extractor of die casting die according to claim 1, characterized in that the middle parts of two end cover plates (11) are fixedly provided with butt joint pipes (15), and the joints of the butt joint pipes (15) and the end cover plates (11) are provided with sealing rings (16) for sealing.
4. The external vacuumizing device of the die-casting die according to claim 1, wherein a pressure relief channel (23) is arranged in the side face of the adapter tube (17) and the middle base plate (10), the communication cavity (18) is communicated with the outside through the pressure relief channel (23), a pressure relief valve (24) is arranged at one end, far away from the communication cavity (18), of the pressure relief channel (23), and the pressure relief valve (24) is installed on the side face of the middle base plate (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220942433.9U CN217964698U (en) | 2022-04-22 | 2022-04-22 | External evacuating device of die casting die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220942433.9U CN217964698U (en) | 2022-04-22 | 2022-04-22 | External evacuating device of die casting die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217964698U true CN217964698U (en) | 2022-12-06 |
Family
ID=84265858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220942433.9U Active CN217964698U (en) | 2022-04-22 | 2022-04-22 | External evacuating device of die casting die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217964698U (en) |
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2022
- 2022-04-22 CN CN202220942433.9U patent/CN217964698U/en active Active
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