CN216176510U

CN216176510U - Die-casting die capable of improving vacuum degree

Info

Publication number: CN216176510U
Application number: CN202122532832.6U
Authority: CN
Inventors: 龚纯
Original assignee: Jiangyin Chunlei Electronic Technology Co ltd
Current assignee: Jiangyin Chunlei Electronic Technology Co ltd
Priority date: 2021-10-21
Filing date: 2021-10-21
Publication date: 2022-04-05
Anticipated expiration: 2031-10-21

Abstract

The utility model discloses a die-casting die for improving vacuum degree, and belongs to the technical field of die-casting dies. The utility model provides an improve die casting die of vacuum, includes the mould main part, the rotation groove has been seted up at the gas outlet middle part, it is equipped with the gear to rotate inslot portion, the through hole has been seted up at the gear middle part, the inside coaxial fixedly connected with turbofan of through hole, the outer wall all coaxially has set firmly the spacing ring around the gear, the annular has been seted up for the position of spacing ring to rotate inslot wall, the gear below is equipped with the rack, the kerve has been seted up for the position of rack to rotate the tank bottom surface, cavity left side open end is inserted and is equipped with the stripper plate, the stripper plate middle part is run through and is equipped with the injection pipe, the injection pipe left end is connected with metal collapsible tube, the stripper plate right wall is seted up flutedly for the position of rack tip. The utility model effectively avoids the air from being mixed in the die-casting raw material, prevents the air holes from being generated in the die-casting formed by die-casting and ensures the quality of the die-casting.

Description

Die-casting die capable of improving vacuum degree

Technical Field

The utility model relates to the technical field of die-casting molds, in particular to a die-casting mold for improving vacuum degree.

Background

Die casting is a metal casting process and is characterized in that high pressure is applied to molten metal by utilizing an inner cavity of a die. The molds are typically machined from higher strength alloys, somewhat similar to injection molding, and most die cast parts are non-ferrous, such as zinc, copper, aluminum, magnesium, lead, tin, and lead-tin alloys and their alloys, in the die-casting process, workers need to firstly vacuumize the interior of the die for die-casting and then inject the die-casting raw materials into the interior of the die through the vacuum valve, so that the absence of air in the interior of the die can be ensured in the die-casting process, therefore, the air holes do not exist in the formed casting, but when the existing die-casting die injects the die-casting raw materials into the die-casting die, partial air exists in the pipe for injecting the raw materials before the pipe is connected, since such air is easily mixed in the raw material during the injection process and is injected into the die at once, which may eventually cause the resultant die cast to contain blowholes, we propose a die casting die with an improved degree of vacuum.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

The utility model aims to provide a die-casting die capable of improving vacuum degree, so as to solve the problems in the background technology.

2. Technical scheme

A die-casting die for improving vacuum degree comprises a die main body, wherein a vacuum valve is connected to the upper portion of the die main body, a connecting pipe is connected to the upper end of the vacuum valve, a fixed seat is connected to the left end of the connecting pipe, a cavity is formed in the left wall of the fixed seat, a discharge hole is formed in the right wall of the cavity and corresponds to the opening end of the connecting pipe, an air outlet is formed in the right end of the front wall of the cavity, a baffle is arranged at the front end of the air outlet, a plurality of stretching springs are fixedly arranged between the rear wall of the baffle and the inner wall of the air outlet in an annular equal interval mode, a rotating groove is formed in the middle of the air outlet, a gear is arranged in the rotating groove, a through hole is formed in the middle of the gear, a turbine fan is coaxially and fixedly connected in the through hole, limiting rings are coaxially and fixedly arranged on the front and rear outer walls of the gear, annular grooves are formed in positions corresponding to the limiting rings, a rack is arranged below the gear, the bottom surface of the rotating groove is provided with a bottom groove relative to the position of the rack, the opening end on the left side of the cavity is inserted with an extrusion plate, the middle of the extrusion plate is provided with an injection pipe in a penetrating mode, the left end of the injection pipe is connected with a metal hose, and the right wall of the extrusion plate is provided with a groove relative to the position of the end portion of the rack.

Preferably, the interior of the connecting pipe is communicated with the cavity through the discharge hole.

Preferably, the baffle is in sliding fit with the air outlet.

Preferably, the gear is in running fit with the rotating groove, the limiting ring is in running fit with the annular groove, and the gear is meshed with the rack.

Preferably, the rack and the bottom groove are of L-shaped structures, the rack is in sliding fit with the bottom groove, the extrusion plate is in sliding fit with the cavity, the right end of the injection pipe is in inserting fit with the opening end of the left side of the discharge port, and the end part of the left side of the rack is in inserting fit with the groove.

3. Advantageous effects

Compared with the prior art, the utility model has the advantages that:

1. the utility model is provided with the gear, the rack and the turbofan, and in the process that the rack drives the gear to rotate, the turbofan in the through hole can pump out residual air in the cavity, the injection pipe and the discharge hole, so that the vacuum degrees in the cavity, the injection pipe and the discharge hole can be ensured, air is effectively prevented from being mixed in a die-casting raw material, air holes are prevented from being generated in a die-casting piece formed by die-casting, and the quality of the die-casting piece is ensured.

2. The utility model is provided with the extrusion plate and the injection pipe, and can seal the opening end of the cavity under the insertion of the extrusion plate, so that the opening end of the cavity cannot generate air inflow in the connection process of the injection pipe and the discharge port, and the sealing performance of the opening end of the cavity is ensured.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the overall structure of the present invention;

FIG. 3 is a schematic view of the overall structure of the present invention;

fig. 4 is a schematic view of the overall structure of the present invention.

The reference numbers in the figures illustrate: 1. a mold body; 2. a vacuum valve; 3. a connecting pipe; 4. a fixed seat; 5. a cavity; 6. a discharge port; 7. an air outlet; 8. a baffle plate; 9. an extension spring; 10. a rotating groove; 11. a gear; 12. a through opening; 13. a turbo fan; 14. a limiting ring; 15. a ring groove; 16. a rack; 17. a bottom groove; 18. a pressing plate; 19. an injection pipe; 20. a metal hose; 21. and (4) a groove.

Detailed Description

Referring to fig. 1-4, the present invention provides a technical solution:

a die casting die for improving vacuum degree comprises a die main body 1, wherein the upper part of the die main body 1 is connected with a vacuum valve 2, the upper end of the vacuum valve 2 is connected with a connecting pipe 3, the left end of the connecting pipe 3 is connected with a fixed seat 4, the left wall of the fixed seat 4 is provided with a cavity 5, the right wall of the cavity 5 is provided with a discharge hole 6 corresponding to the open end of the connecting pipe 3, the right end of the front wall of the cavity 5 is provided with an air outlet 7, the front end of the air outlet 7 is provided with a baffle plate 8, a plurality of extension springs 9 are fixedly arranged between the rear wall of the baffle plate 8 and the inner wall of the air outlet 7 at equal intervals in an annular shape, the middle part of the air outlet 7 is provided with a rotating groove 10, a gear 11 is arranged in the rotating groove 10, a through hole is arranged in the middle part of the gear 11, a turbofan 13 is coaxially and fixedly connected in the through hole 12, the front outer wall and the rear wall of the gear 11 are coaxially provided with a limiting ring 14, the inner wall of the rotating groove 10 is provided with a ring groove 15 corresponding to the limiting ring 14, a rack 16 is arranged below the gear 11, a bottom groove 17 is formed in the bottom surface of the rotating groove 10 relative to the position of the rack 16, an extrusion plate 18 is inserted into the left opening end of the cavity 5, an injection pipe 19 penetrates through the middle of the extrusion plate 18, a metal hose 20 is connected to the left end of the injection pipe 19, and a groove 21 is formed in the right wall of the extrusion plate 18 relative to the end of the rack 16.

Specifically, the connecting pipe 3 is communicated with the cavity 5 through the discharge hole 6, and before the pressure casting work of a worker, the air in the die body 1 can be firstly pumped out through the vacuum valve 2 connected to the external vacuum pump through the die body 1, and then the vacuum valve 2 is communicated with the discharge hole 6 on the fixed seat 4 through the connecting pipe 3.

Further, baffle 8 and gas outlet 7 sliding fit, just can be pulled back to gas outlet 7 by extension spring 9's contractile force after 7 baffle 8 of gas outlet loses the top that blows off gas, and can constitute labyrinth seal structure under the normal running fit of spacing ring 14 and annular 15 of outer wall around gear 11, can further avoid the air to extrude into cavity 5 via its seam crossing, the inside leakproofness of cavity 5 has been improved, and under the condition of the right-hand back of gas outlet 7 and the laminating of cavity 5 right wall of position removal of stripper plate 18, can also make the air that cavity 5 open end let in also can't influence discharge gate 6, the inside vacuum of discharge gate 6 and injection pipe 19 has been ensured to the at utmost.

Furthermore, the gear 11 is rotatably matched with the rotating groove 10, the limiting ring 14 is rotatably matched with the annular groove 15, and the gear 11 is in meshed connection with the rack 16.

Still further, the rack 16 and the bottom groove 17 are both in an L-shaped structure, the rack 16 and the bottom groove 17 are in sliding fit, the extrusion plate 18 and the cavity 5 are in sliding fit, the right end of the injection pipe 19 and the left open end of the discharge port 6 are in insertion fit, the left end of the rack 16 and the groove 21 are in insertion fit, a worker can insert the extrusion plate 18 outside the injection pipe 19 along the open end of the cavity 5, the position of the groove 21 is required to be corresponding to the left end of the rack 16 when inserting the extrusion plate 18 into the cavity 5, then the rack 16 can drive the gear 11 to rotate, the gear 11 rotates to drive the turbofan 13 in the middle through port 12 to synchronously rotate and extract air left in the cavity 5 and the injection pipe 19, the air is extracted and simultaneously pushes the baffle plate 8 open to extend the extension spring 9 and open a gap enough for blowing air, when the right end of the injection pipe 19 and the left open end of the discharge port 6 are in insertion fit, the air remaining in the cavity 5 and the injection pipe 19 is completely discharged, so that the apparatus can be ensured not to be mixed with air when injecting the die-casting material into the die main body 1.

The working principle is as follows: before the die casting operation is started, an external vacuum pump can firstly pump out air in the die body 1 through the vacuum valve 2 connected to the die body 1, then the vacuum valve 2 is communicated with the discharge hole 6 on the fixed seat 4 through the connecting pipe 3, at the moment, the extrusion plate 18 outside the injection pipe 19 can be inserted along the open end of the cavity 5, the position of the groove 21 is required to be corresponding to the left end of the rack 16 when the extrusion plate 18 is inserted into the cavity 5, then the rack 16 can drive the gear 11 to rotate, the gear 11 can drive the turbofan 13 in the middle through hole 12 to synchronously rotate and pump out air left in the cavity 5 and the injection pipe 19, the air can push the baffle plate 8 to extend the extension spring 9 and open a gap enough for blowing air out when the right end of the injection pipe 19 is inserted and matched with the left open end of the discharge hole 6, the air that remains in cavity 5 and injection pipe 19 just can be discharged by whole, so as to ensure this device can not mix into the air when pouring into the die-casting raw materials into mould main part 1 inside, just can be pulled back in gas outlet 7 by extension spring 9's contractile force after 7 baffles 8 of gas outlet lose the top that blows off gas, and can constitute labyrinth seal structure under the normal running fit of spacing ring 14 and annular 15 of gear 11 front and back outer wall, can further avoid air to extrude into cavity 5 through its seam crossing, the leakproofness of cavity 5 inside has been improved, and under the condition of the right wall laminating of cavity 5 after the position of stripper plate 18 moved to gas outlet 7 is right-hand, can also make the air that cavity 5 open end let in also can not influence discharge gate 6, the vacuum of discharge gate 6 and injection pipe 19 inside has been ensured to the at utmost.

Claims

1. The utility model provides an improve die casting die of vacuum, includes mould main part (1), its characterized in that: the mold is characterized in that the upper part of the mold body (1) is connected with a vacuum valve (2), the upper end of the vacuum valve (2) is connected with a connecting pipe (3), the left end of the connecting pipe (3) is connected with a fixing seat (4), a cavity (5) is formed in the left wall of the fixing seat (4), a discharge hole (6) is formed in the right wall of the cavity (5) relative to the position of the opening end of the connecting pipe (3), an air outlet (7) is formed in the right end of the front wall of the cavity (5), a baffle (8) is arranged at the front end of the air outlet (7), a plurality of stretching springs (9) are fixedly arranged between the rear wall of the baffle (8) and the inner wall of the air outlet (7) at equal intervals in an annular shape, a rotating groove (10) is formed in the middle part of the air outlet (7), a gear (11) is arranged in the rotating groove (10), a through hole (12) is formed in the middle part of the gear (11), and a turbofan (13) is coaxially and fixedly connected with the inside of the through hole (12), equal coaxial the setting has spacing ring (14) of outer wall around gear (11), rotate groove (10) inner wall and seted up annular (15) for the position of spacing ring (14), gear (11) below is equipped with rack (16), end groove (17) have been seted up for the position of rack (16) to rotation groove (10) bottom surface, cavity (5) left side open end is inserted and is equipped with stripper plate (18), stripper plate (18) middle part is run through and is equipped with injection tube (19), injection tube (19) left end is connected with metal collapsible tube (20), stripper plate (18) right wall is seted up flutedly (21) for the position of rack (16) tip.

2. A vacuum enhanced die casting mold as claimed in claim 1, wherein: the interior of the connecting pipe (3) is communicated with the cavity (5) through a discharge hole (6).

3. A vacuum enhanced die casting mold as claimed in claim 1, wherein: the baffle (8) is in sliding fit with the air outlet (7).

4. A vacuum enhanced die casting mold as claimed in claim 1, wherein: gear (11) and rotating groove (10) normal running fit, spacing ring (14) and annular (15) normal running fit, gear (11) and rack (16) meshing are connected.

5. A vacuum enhanced die casting mold as claimed in claim 1, wherein: rack (16) and kerve (17) are L type structure, rack (16) and kerve (17) sliding fit, stripper plate (18) and cavity (5) sliding fit, injection pipe (19) right-hand member is pegged graft with discharge gate (6) left side open end and is cooperated, rack (16) left side tip is pegged graft with recess (21) and is cooperated.