CN221581966U - Water-cooling exhaust structure of casting mould - Google Patents

Abstract

The utility model provides a water-cooling exhaust structure of casting mould, includes the cover half, set up the through-hole on the cover half, the through-hole is the shoulder hole, and a water-cooling insert body is located the big footpath section of shoulder hole, and the terminal surface of water-cooling insert body leaves the exhaust clearance with big footpath section Kong Jian wall, sets up the exhaust pin on the water-cooling insert body, exhaust pin one end extends the water-cooling insert body and inserts in the path section of shoulder hole, sets up a plurality of first exhaust grooves on the extension of exhaust pin, water-cooling insert body circumference sets up a plurality of second exhaust grooves, and a stopper cover is on the water-cooling insert body and through screw and cover half fixed connection, and the width of stopper is less than the big footpath section diameter of through-hole, makes the other end of second exhaust groove expose and forms the gas vent, set up the water-cooling hole in the water-cooling insert body, a inlet tube inserts in the water-cooling hole, and the drill way of water-cooling hole is sealed with the closing cap, a outlet pipe fixed connection is on the water-cooling insert body. The water-cooling exhaust structure is simple in structure, good in exhaust effect and cooling effect, and has no influence on the temperature of the peripheral die.

Description

Water-cooling exhaust structure of casting mould

Technical Field

The utility model belongs to the technical field of mold water cooling structures, and particularly relates to a water cooling exhaust structure of a casting mold.

Background

In the casting process, in order to ensure the casting quality, the temperature of a die is generally required to be controlled, the local protruding position of the casting is subjected to water cooling treatment, and air in a cavity is discharged, so that the problems of shrinkage porosity defect of the casting, unsmooth exhaust, metal liquid blocking and the like caused by unreasonable temperature field are avoided.

The utility model discloses a fixed point cooling exhaust structure for casting mould of publication number CN 204262288U, discloses a fixed point cooling exhaust structure for casting mould, and its technical scheme is: the fixed-point cooling exhaust structure includes: the cooling exhaust pin assembly, the plug, the cooling water valve and the temperature-sensing thermocouple are arranged outside the cooling exhaust pin of the cooling exhaust pin assembly, a spiral exhaust groove structure is arranged outside the cooling exhaust pin of the cooling exhaust pin assembly, and gas inside the die cavity can be discharged outside through the spiral exhaust groove; an inner hole is formed in the cooling exhaust pin body, a cooling exhaust pin water baffle block is arranged in the cooling exhaust pin inner hole and is fixed by a water baffle block fixing groove, the inner hole is divided into two parts, and a water passing groove is formed in the top of the cooling exhaust pin. The cooling exhaust pin is arranged at the position needing cooling exhaust and is pressed by the plug, and water flows through the water channel and the inner hole of the cooling exhaust pin to form a circulation loop, so that the cooling exhaust effect is achieved. Although the technical scheme can simultaneously cool water and discharge waste gas during casting, the cooling exhaust pin component is in direct contact with the peripheral die, so that the temperature of the die is easily reduced, and shrinkage porosity defect is accelerated to occur due to the fact that the cooling around the local protruding position of the casting is accelerated; and adopt the manger plate piece to divide into water inlet side and play water side with the hole of cooling exhaust pin, the assembly position of manger plate piece and cooling exhaust pin needs very accurate, otherwise appears the rivers disorder easily or flow through in the clearance of manger plate piece and cooling exhaust pin, causes the cooling effect poor.

Disclosure of Invention

The utility model aims at overcoming the defects of the prior art, and provides a water-cooling exhaust structure of a casting die, which has the advantages of simple structure, good exhaust effect, uniform cooling water flow, good cooling effect and no influence on the temperature of a peripheral die.

The purpose of the utility model is realized in the following way:

The utility model provides a water-cooling exhaust structure of casting mould, includes the cover half, set up a through-hole on the cover half and communicate with each other with the die cavity of cover half, a water-cooling inserts body setting in the through-hole of cover half, its characterized in that: the through hole is a stepped hole, the water cooling insert is located in a large-diameter section of the stepped hole, an exhaust gap is reserved between the axial end face of the water cooling insert and the hole shoulder wall of the large-diameter section, an exhaust pin is arranged on the water cooling insert, one end of the exhaust pin extends out of the water cooling insert and is inserted into the small-diameter section of the stepped hole, the axial end face of the exhaust pin forms part of the wall of the fixed die cavity, a plurality of first exhaust grooves extending along the axial direction are arranged on the extending section of the exhaust pin, the first exhaust grooves are communicated with the exhaust gap and the cavity, a plurality of second exhaust grooves extending along the axial direction are arranged on the circumference of the water cooling insert, one end of each second exhaust groove is communicated with the exhaust gap, a limiting block is sleeved on the water cooling insert and is fixedly connected with the fixed die through a screw, the width of the limiting block is smaller than the diameter of the large-diameter section of the through hole, the other end of each second exhaust groove on the water cooling insert is exposed to form an exhaust port, the water cooling hole is arranged in the water cooling insert, the water inlet pipe is inserted into the water cooling hole, a water inlet pipe is provided with a water inlet pipe, a water cooling hole is provided with a water cooling hole, a water cooling hole is provided between the outer wall of the water inlet pipe and the water outlet pipe and the inner wall of the water cooling hole, a water outlet pipe is communicated with the water outlet pipe through sealing gap.

The cross section of the first exhaust groove can be triangular or rectangular or trapezoidal or U-shaped.

The number of the second exhaust grooves is four, and the second exhaust grooves are uniformly distributed on the water-cooling insert.

The exhaust pin is fixed on the water-cooling insert body by interference fit or welding.

The exhaust pin is made of a metal material with high heat conductivity.

The exhaust pin may be brass, or carbon steel.

The utility model has the beneficial effects that: by adopting the water-cooling exhaust structure, in the casting process, the molten metal flows into the cavity, and air in the cavity is sequentially exhausted from the exhaust port after passing through the first exhaust groove, the exhaust gap and the second exhaust groove, so that the unsmooth exhaust is avoided to block the flow of the molten metal, and the casting quality is improved; according to the structure, cooling water flows in from the water inlet pipe to cool the exhaust pin, so that cooling of the cavity is realized, and the exhaust pin is made of a metal material with high heat conductivity, so that the cooling effect is good; the second exhaust groove arranged on the water-cooling insert body reduces the contact area between the water-cooling insert body and the fixed die, has small influence on the temperature of the fixed die, and avoids the phenomenon of shrinkage porosity of the casting which is rapidly cooled around the local protruding position.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the direction A in FIG. 1;

FIG. 3 is a schematic view of the present utility model assembled in a stationary mold;

FIG. 4 is a schematic view in the direction B in FIG. 3;

FIG. 5 is a cross-sectional view taken at C-C of FIG. 3;

FIG. 6 is a schematic structural view of the stationary mold of the present utility model.

Reference numerals illustrate: the air exhaust pin 1, the extension section 1a, the first air exhaust groove 1b, the water cooling insert 2, the air exhaust gap 2a, the second air exhaust groove 2b, the air exhaust port 2c, the water cooling hole 2d, the water passing gap 2e, the sealing cover 2f, the limiting block 3, the water inlet pipe 4, the water outlet pipe 5, the fixed die 6, the cavity 7 and the through hole 7a.

Detailed Description

Further description is provided below with reference to the drawings and detailed description.

Referring to fig. 1 to 6, an embodiment of a water-cooled exhaust structure of a casting mold includes a fixed mold 6, an exhaust pin 1, a water-cooled insert 2, a water inlet pipe 4, and a water outlet pipe 5. The fixed die 6 is provided with a through hole 7a communicated with a cavity 7 of the fixed die 6, the through hole 7a is a stepped hole, a water-cooling insert 2 is arranged in a large-diameter section of the stepped hole of the fixed die 6, and an exhaust gap 2a is reserved between the axial end face of the water-cooling insert 2 and the hole shoulder wall of the large-diameter section; an exhaust pin 1 is in interference fit on the water-cooling insert body 2 or welded and fixed, one end of the exhaust pin 1 extends out of the water-cooling insert body 2 and is inserted into a small-diameter section of the stepped hole, the axial end face of the exhaust pin 1 forms part of the wall of a cavity 7 of the fixed die 6, a plurality of first exhaust grooves 1b which extend along the axial direction and have triangular sections are arranged on an extending section 1a of the exhaust pin 1, the first exhaust grooves 1b are communicated with an exhaust gap 2a and the cavity 7 and are used for flowing metal liquid into the cavity 7, and air in the cavity 7 is exhausted into the exhaust gap 2a through the first exhaust grooves 1 b; four second exhaust grooves 2b extending along the axial direction are uniformly formed in the circumference of the water-cooling insert body 2, one end of each second exhaust groove 2b is communicated with an exhaust gap 2a, a limiting block 3 is sleeved on the water-cooling insert body 2 and fixedly connected with the fixed die 6 through a screw, the width of the limiting block 3 is smaller than the diameter of the large-diameter section of the through hole 7a, the other end of each second exhaust groove 2b on the water-cooling insert body 2 is exposed to form an exhaust port 2c, and air in the cavity 7 is exhausted out of the exhaust port 2c from the exhaust gap 2a through the second exhaust grooves 2b, so that unsmooth blocking of metal liquid flow by exhaust is avoided;

The upper end of the groove wall of the second exhaust groove 2b is contacted with the fixed mold 6, so that the contact area between the water-cooling insert 2 and the fixed mold 6 is reduced, the influence on the temperature of the fixed mold 6 is small, and the phenomenon of shrinkage porosity caused by cooling around the local protruding position of the casting is avoided;

The water cooling insert 2 is internally provided with a water cooling hole 2d, a water inlet pipe 4 is inserted into the water cooling hole 2d, a water passing gap 2e is reserved between the outer wall of the water inlet pipe 4 and the inner wall of the water cooling hole 2d, the orifice of the water cooling hole 2d is sealed by a sealing cover 2f, a water outlet pipe 5 is fixedly connected to the water cooling insert 2 and communicated with the water passing gap 2e, cooling water flows in from the water inlet pipe 4 and cools the exhaust pin 1, cooling of the cavity 7 is realized, and cooling water flows out from the water outlet pipe 5 through the water passing gap 2 e.

By adopting the water-cooling exhaust structure, in the casting process, cooling water flows in from the water inlet pipe 4, after cooling the exhaust pin 1, the cooling water flows out from the water outlet pipe 5, and the exhaust pin 1 is made of a metal material with higher heat conductivity, so that the cooling effect is good; the molten metal flows into the die cavity 7, and air in the die cavity 7 sequentially passes through the first exhaust groove 1b, the exhaust gap 2a and the second exhaust groove 2b and then is discharged from the exhaust port 2c, so that the phenomenon that the flow of the molten metal is blocked by unsmooth exhaust is avoided, and the casting quality is improved.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the utility model, and those skilled in the art will appreciate that the modifications made to the utility model fall within the scope of the utility model without departing from the spirit of the utility model.

Claims (6)

1. The utility model provides a water-cooling exhaust structure of casting mould, includes cover half (6), set up a through-hole (7 a) on cover half (6) and communicate with each other with die cavity (7) of cover half (6), a water-cooling insert (2) set up in through-hole (7 a) of cover half (6), its characterized in that: the through hole (7 a) is a stepped hole, the water-cooling insert (2) is positioned in a large-diameter section of the stepped hole, an exhaust gap (2 a) is reserved between the axial end face of the water-cooling insert (2) and the hole shoulder wall of the large-diameter section, an exhaust pin (1) is arranged on the water-cooling insert (2), one end of the exhaust pin (1) extends out of the water-cooling insert (2) and is inserted into the small-diameter section of the stepped hole, the axial end face of the exhaust pin (1) forms part of a cavity (7) wall of the fixed die (6), a plurality of first exhaust grooves (1 b) extending along the axial direction are arranged on the extending section (1 a) of the exhaust pin (1), the first exhaust grooves (1 b) are communicated with the cavity (7), a plurality of second exhaust grooves (2 b) extending along the axial direction are arranged on the circumference of the water-cooling insert (2), one end of each second exhaust groove (2 b) is communicated with the exhaust gap (2 a), a limiting block (3) is sleeved on the water-cooling insert (2) and is fixedly connected with the water-cooling insert (2) through a screw (2) to form a large-diameter water-cooling insert (2) through the second end (4) and the water-cooling insert (2) through a, the diameter of the water-cooling insert (2) is fixedly connected with the water-cooling insert (2 d) through the water-cooling insert (2) through a screw (4), a water passing gap (2 e) is reserved between the outer wall of the water inlet pipe (4) and the inner wall of the water cooling hole (2 d), the orifice of the water cooling hole (2 d) is sealed by a sealing cover (2 f), and a water outlet pipe (5) is fixedly connected to the water cooling insert body (2) and communicated with the water passing gap (2 e).

2. The water-cooled vent structure of a casting mold according to claim 1, wherein: the cross section of the first exhaust groove (1 b) can be triangular or rectangular or trapezoidal or U-shaped.

3. The water-cooled vent structure of a casting mold according to claim 1, wherein: the number of the second exhaust grooves (2 b) is four, and the second exhaust grooves are uniformly distributed on the water-cooling insert (2).

4. The water-cooled vent structure of a casting mold according to claim 1, wherein: the exhaust pin (1) is fixed on the water-cooling insert (2) by interference fit or welding.

5. The water-cooled vent structure of a casting mold according to claim 1, wherein: the exhaust pin (1) is made of a metal material with high heat conductivity.

6. The water-cooled vent structure of a casting mold according to claim 1 or 5, wherein: the exhaust pin (1) can be made of brass or carbon steel.