CN210475434U

CN210475434U - Mold for nodular iron castings

Info

Publication number: CN210475434U
Application number: CN201921217355.0U
Authority: CN
Inventors: 孔东波
Original assignee: Danyang Xinde Machinery Technology Co Ltd
Current assignee: Danyang Xinde Machinery Technology Co Ltd
Priority date: 2019-07-31
Filing date: 2019-07-31
Publication date: 2020-05-08
Anticipated expiration: 2029-07-31

Abstract

The utility model discloses a mould for nodular iron casting, including bed die, sprue gate and die cavity one, the bed die top is provided with the mould, the shaping has die cavity two in the bed die, the shaping has in the last mould die cavity one, die cavity one with die cavity two one sides all are provided with cooling channel, go up the mould with bed die piece department is provided with the air discharge duct, the shaping of bed die upper end is fluted. Has the advantages that: the utility model discloses a set up die cavity one, die cavity two, recess, lug, can make the top die carry out zonulae occludens with the bed die, avoid producing the gap, effectively prevent the type hourglass, guarantee the subassembly quality, cross setting up rising head, baffle, can effectively prevent external impurity to get into, guarantee the interior cleanliness factor of mould, reduce the impurity in the foundry goods, avoid producing husky hole.

Description

Mold for nodular iron castings

Technical Field

The utility model relates to the technical field of mold, concretely relates to a mould for nodular iron casting.

Background

The nodular cast iron is a high-strength cast iron material developed in the 20 th century and the fifties, the comprehensive performance of the nodular cast iron material is close to that of steel, and the nodular cast iron material has been successfully used for casting parts which are complex in stress and high in requirements on strength, toughness and wear resistance based on the excellent performance of the nodular cast iron material, and a mold is required to be used when the nodular cast iron is cast.

The mould is a tool for manufacturing a molded article, the tool is composed of various parts, different moulds are composed of different parts, the processing of the appearance of the article is realized mainly by changing the physical state of a molded material, and the tool is called as an industrial mother.

At present, the existing mould generally adopts an upper mould group and a lower mould group to mould nodular cast iron, the mould leakage is easy to occur at the joint of the mould, the casting quality of the nodular cast iron is influenced, and the riser of the existing mould is mostly set to an open type to judge whether molten metal is poured sufficiently, so that impurities can easily enter the mould, and impurities, sand holes and the like are generated in the casting forming process.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In order to overcome the defects of the prior art, the mold for the nodular iron castings is provided, and the problems that the nodular iron castings are molded by an upper mold group and a lower mold group, the mold leakage is easy to occur at the joint of the mold, the casting quality of the nodular iron castings is affected, and the casting heads of the prior molds are mostly open and used for judging whether molten metal is poured sufficiently, so that impurities are easy to enter the mold, and impurities, sand holes and the like are generated in the casting molding process are solved.

(II) technical scheme

The utility model discloses a following technical scheme realizes: the utility model provides a mould for nodular iron castings, which comprises a lower mould, a sprue gate and a first cavity, wherein an upper mould is arranged above the lower mould, a second cavity is formed in the lower mould, the first cavity is formed in the upper mould, cooling channels are arranged on one sides of the first cavity and the second cavity, an exhaust groove is arranged at the splicing part of the upper mould and the lower mould, a groove is formed at the upper end of the lower mould, a lug is arranged at the lower end of the upper mould corresponding to the groove, fixed plates are arranged on the two side walls of the upper end of the upper mould and the two side walls of the upper end of the lower mould, bolts are arranged on the fixed plates, handles are arranged on the two side walls of the upper end of the upper mould, the sprue gate is arranged on one side of the upper end of the upper mould, a riser is arranged on one side of the sprue gate, a cover plate, an inner sprue is arranged between the pouring gate and the first cavity.

Furthermore, a step is formed at the upper end of the second cavity, and a convex ring is formed at the lower end of the first cavity corresponding to the step on the second cavity.

According to the technical scheme, the upper die and the lower die provide the molding support for nodular cast iron casting, the first cavity and the second cavity are used for molding the nodular cast iron, and the first cavity and the second cavity are tightly connected with the protruding ring through the steps, so that molding leakage is prevented.

Further, the cooling channel is formed on the upper die and the lower die, and the exhaust groove is formed on the upper die and the lower die.

Through the technical scheme, the cooling liquid is injected into the cooling channel to effectively cool the die, so that the die temperature is kept within a certain range, and air in the die cavity and various gases generated in the heating process of the material can be exhausted through the exhaust groove when the molten material is injected.

Furthermore, the lug is formed on the upper die, the fixed plate is welded with the upper die and the lower die, and the bolt is spliced with the fixed plate.

Through the technical scheme, the lug is matched with the groove, so that the upper die is convenient to assemble and fasten with the lower die, and the fixing plate is convenient for fastening the bolt, the upper die and the lower die to effectively prevent the mold leakage.

Furthermore, the handle with go up the mould welding, the sprue gate shaping in go up on the mould, the rising head shaping in go up on the mould, the apron with the rising head passes through hinge connection.

Through the technical scheme, through the handle is convenient for carry go up the mould, through the sprue gate pouring metal liquid, through the rising head is convenient for observe whether the metal liquid waters sufficiently, avoids having the phenomenon of watering inadequately, influences the foundry goods quality, through the apron can block external impurity and pass through the rising head gets into, guarantees foundry goods shaping quality.

Further, the pouring gate is formed on the upper die.

According to the technical scheme, the metal liquid is guided to flow into the first cavity and the second cavity through the pouring channel.

Further, the ingate is formed between the pouring channel and the first cavity.

Through the technical scheme, the molten metal can conveniently enter the first cavity and the second cavity through the inner pouring gate.

(III) advantageous effects

Compared with the prior art, the utility model, following beneficial effect has:

1. in order to solve the problems that the nodular cast iron is molded by an upper mold group and a lower mold group in the prior mold, the joint part of the mold is easy to generate mold leakage, and the casting quality of the nodular cast iron is influenced, the upper mold and the lower mold can be tightly connected by arranging the first cavity, the second cavity, the groove and the lug, so that the generation of gaps is avoided, the mold leakage is effectively prevented, and the quality of the assembly is ensured;

2. set up to open the type for solving current mould rising head more, be used for judging whether molten metal waters enough, make impurity get into the mould easily like this in, make the problem that produces impurity, husky hole etc. among the foundry goods forming process, the utility model discloses a set up rising head, baffle, can effectively prevent external impurity to get into, guarantee the interior cleanliness factor of mould, reduce the impurity in the foundry goods, avoid producing husky hole.

Drawings

Fig. 1 is a schematic structural diagram of a mold for nodular iron castings according to the present invention;

fig. 2 is a front cross-sectional view of a mold for nodular iron castings according to the present invention before mold assembly;

fig. 3 is a schematic structural diagram of a lower mold in a mold for nodular iron castings according to the present invention.

The reference numerals are explained below:

1. a handle; 2. an upper die; 3. a cooling channel; 4. a first cavity; 5. a fixing plate; 6. a lower die; 7. a second cavity; 8. a groove; 9. a bump; 10. an inner gate; 11. a pouring channel; 12. a riser; 13. a cover plate; 14. a pouring gate; 15. a bolt; 16. an exhaust groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1-3, in this embodiment, a mold for nodular iron castings includes a lower mold 6, a pouring gate 14, and a first cavity 4, an upper mold 2 is disposed above the lower mold 6, a molding support is provided for nodular iron casting by the upper mold 2 and the lower mold 6, a second cavity 7 is formed in the lower mold 6, the first cavity 4 is formed in the upper mold 2, cooling channels 3 are disposed on both sides of the first cavity 4 and the second cavity 7, cooling liquid is injected through the cooling channels 3 to effectively cool the mold, so that the mold temperature is kept within a certain range, an exhaust groove 16 is disposed at a joint between the upper mold 2 and the lower mold 6, air in the cavity and various gases generated during heating of the material can be removed during injection of the molten material by the exhaust groove 16, a groove 8 is formed at the upper end of the lower mold 6, a protrusion 9 is disposed at the lower end of the upper mold 2 corresponding to the groove 8, all be provided with fixed plate 5 on 2 lower extremes of last mould and the 6 upper end both sides walls of bed die, through lug 9 and the cooperation of recess 8, make go up mould 2 and bed die 6 be convenient for assemble and fastening, be provided with bolt 15 on the fixed plate 5, be provided with handle 1 on 2 upper end both sides walls of last mould, be convenient for carry go up mould 2 through handle 1, it is provided with sprue gate 14 to go up mould 2 upper end one side, sprue gate 14 one side is provided with rising head 12, be provided with apron 13 on the rising head 12, sprue gate 14 lower extreme is provided with waters 11, in pouring 11 guide metal liquid into die cavity one 4 and die cavity two 7 through watering, it is provided with in-gate 10 to water between 11 and the die cavity one 4, be convenient for the metal liquid to get into in die cavity one.

As shown in fig. 2, in this embodiment, a step is formed at the upper end of the second cavity 7, a protruding ring is formed at the lower end of the first cavity 4 corresponding to the step on the second cavity 7, the first cavity 4 and the second cavity 7 are tightly connected with the protruding ring through the step to prevent mold leakage, and the first cavity 4 and the second cavity 7 are used for molding nodular cast iron.

As shown in fig. 1 and 2, in this embodiment, the pouring gate 14 is formed on the upper die 2, the riser 12 is formed on the upper die 2, the cover plate 13 is connected to the riser 12 through the hinge, the molten metal is poured through the pouring gate 14, and it is convenient to observe whether the molten metal is poured sufficiently through the riser 12, so as to avoid the phenomenon of insufficient pouring, improve the casting quality, and prevent external impurities from entering through the riser 12 through the cover plate 13, thereby ensuring the casting quality.

The specific implementation process of this embodiment is as follows: cleaning a first cavity 4 and a second cavity 7 to prevent scraps from remaining, carrying an upper die 2 through a handle 1, enabling a bump 9 of the upper die 2 to correspond to a groove 8 of a lower die 6, assembling the upper die 2 and the lower die 6, penetrating a bolt 15 through a fixing plate 5, fastening the upper die 2 and the lower die 6 to prevent mold leakage, pouring molten metal through a pouring gate 14, enabling the molten metal to flow into the upper die 2 along a pouring gate 11, flowing into the first cavity 4 and the second cavity 7 through an inner pouring gate 10, discharging gas in the die through an exhaust groove 16 to reduce the generation of bad types such as sand holes, injecting cooling liquid through a cooling channel 3, effectively cooling the die to keep the die temperature within a certain range, ensuring the die forming quality, confirming that the molten metal in the die is fully injected by observing a molten metal overflow cover plate 13 at a riser 12, and stopping injection.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the spirit and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by the technical solution of the present invention by those skilled in the art should fall into the protection scope of the present invention, and the technical contents claimed by the present invention have been fully recorded in the claims.

Claims

1. A mould for nodular iron castings, characterized in that: comprises a lower die (6), a pouring gate (14) and a first cavity (4), wherein an upper die (2) is arranged above the lower die (6), a second cavity (7) is formed in the lower die (6), the first cavity (4) is formed in the upper die (2), cooling channels (3) are arranged on one sides of the first cavity (4) and the second cavity (7), an air exhaust groove (16) is arranged at the joint of the upper die (2) and the lower die (6), a groove (8) is formed in the upper end of the lower die (6), a lug (9) is arranged at the lower end of the upper die (2) corresponding to the groove (8), fixing plates (5) are arranged on the lower end of the upper die (2) and two side walls at the upper end of the lower die (6), a bolt (15) is arranged on each fixing plate (5), a handle (1) is arranged on two side walls at the upper end of the upper die (2), the pouring gate (14) is arranged on one side of the upper end of the upper die (2), a riser (12) is arranged on one side of the pouring gate (14), a cover plate (13) is arranged on the riser (12), a pouring gate (11) is arranged at the lower end of the pouring gate (14), and an inner pouring gate (10) is arranged between the pouring gate (11) and the first cavity (4).

2. The mold for nodular iron castings according to claim 1, wherein: the upper end of the second cavity (7) is provided with a step, and the lower end of the first cavity (4) is provided with a convex ring corresponding to the step on the second cavity (7).

3. The mold for nodular iron castings according to claim 1, wherein: the cooling channel (3) is formed on the upper die (2) and the lower die (6), and the exhaust groove (16) is formed on the upper die (2) and the lower die (6).

4. The mold for nodular iron castings according to claim 1, wherein: the convex block (9) is formed on the upper die (2), the fixing plate (5) is welded with the upper die (2) and the lower die (6), and the bolt (15) is connected with the fixing plate (5) in an inserting mode.

5. The mold for nodular iron castings according to claim 1, wherein: handle (1) with go up mould (2) welding, sprue gate (14) shaping in go up on mould (2), rising head (12) shaping in go up on mould (2), apron (13) with rising head (12) pass through hinge connection.

6. The mold for nodular iron castings according to claim 1, wherein: the pouring gate (11) is formed on the upper die (2).

7. The mold for nodular iron castings according to claim 1, wherein: the inner sprue (10) is formed between the pouring channel (11) and the first cavity (4).