CN217412415U

CN217412415U - Casting device for machining deep hole castings

Info

Publication number: CN217412415U
Application number: CN202220418998.7U
Authority: CN
Inventors: 李加福; 李庆
Original assignee: Beijing Kohler Ltd
Current assignee: Beijing Kohler Ltd
Priority date: 2022-02-28
Filing date: 2022-02-28
Publication date: 2022-09-13
Anticipated expiration: 2032-02-28

Abstract

The utility model discloses a casting device for processing deep hole foundry goods belongs to casting device technical field. It comprises the following steps: the deep hole casting forming device comprises a static die and a movable die, wherein a first cavity and a second cavity which are communicated with each other are formed between the static die and the movable die, the extending directions of the first cavity and the second cavity form a set angle, the first cavity extends to the end face of the static die, which is far away from the movable die, the second cavity is used for forming the main body part of the deep hole casting, and the first cavity is used for forming the deep hole part of the deep hole casting; the insert is provided with an exhaust hole, the first core is inserted into the exhaust hole of the insert, and the insert is arranged on the static die and used for plugging a metal mold filling channel of a first cavity; at least two exhaust passages with vertical airflow direction are arranged between the insert and the first core. The utility model provides a casting device of current processing deep hole foundry goods not smooth problem that leads to the gas pocket defect of exhausting.

Description

Casting device for machining deep hole castings

Technical Field

The utility model relates to a casting device field, in particular to casting device for processing deep hole foundry goods.

Background

Wall-mounted faucets are typically manufactured using low pressure casting molds with deep-hole cavities due to their deep-hole construction. Like the casting mold with deep hole in the cavity, a deep hole cavity venting scheme as shown in fig. 1 is generally adopted, and air in the deep hole cavity is vented through a venting groove 01a arranged on the metal core back 01 along with the filling of the molten metal. In order to avoid the blockage of the exhaust groove and the unsmooth demolding of the casting, the metal core pulling 01 can be pulled once when one casting is produced. So that the metal loose core can be cleaned at any time, and smooth exhaust is ensured.

In the existing casting mould, in order to prevent the problem that the casting cannot be demoulded due to the fact that molten metal flows out of the mould through the exhaust groove 01a to form the back-off, the exhaust groove arranged on the metal core pulling 01 is not too large, so that the exhaust effect of the mould is poor, and the proportion of air hole defects is high. Meanwhile, the core pulling mechanism has high requirements on the maintenance of the casting mold, and certain difficulty is installed to influence the production efficiency.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is that the casting device of current processing deep hole foundry goods exhausts not smooth problem that leads to the gas pocket defect.

To the technical problem mentioned above, the utility model provides a following technical scheme:

a casting apparatus for machining deep-hole castings, comprising: the device comprises a static die and a movable die, wherein a first cavity and a second cavity which are communicated with each other are formed between the static die and the movable die, the extending directions of the first cavity and the second cavity form a set angle, the first cavity extends to the end face of the static die, which is far away from the movable die, the second cavity is used for forming the main body part of the deep-hole casting, and the first cavity is used for forming the deep-hole part of the deep-hole casting; the insert is provided with an exhaust hole, the first core is inserted into the exhaust hole of the insert, and the insert is arranged on the static die and used for plugging a metal mold filling channel of the first cavity; at least two exhaust passages with vertical airflow direction are arranged between the insert and the first mold core.

The utility model discloses an among the partial implementation, exhaust passage includes first exhaust passage, second exhaust passage and third exhaust passage, wherein, first exhaust passage is located with second exhaust passage in first die cavity, third exhaust passage is located the first die cavity outside, the air current is followed first exhaust passage, second exhaust passage and third exhaust passage discharge.

The utility model discloses an among the partial implementation, first exhaust passage with third exhaust passage is the straight passageway that extends along vertical direction, the annular channel that second exhaust passage extends along the horizontal direction.

In some embodiments of the present invention, the first exhaust passage and the third exhaust passage are respectively located on two radial sides of the first core.

The utility model discloses an among the partial embodiment, first exhaust passage's air flow cross-section is greater than third exhaust passage's air flow cross-section.

The utility model discloses an among the partial implementation, the exhaust hole of inserting is including being located first part in the first die cavity and being located second part outside the first die cavity, the aperture of first part is greater than the aperture of second part, first core is equipped with annular bulge, annular bulge butt in on the first part in exhaust hole and the interface of second part.

The utility model discloses an among the partial implementation, the shaping has the first exhaust groove that extends along vertical direction on the annular bulge of first core, first exhaust groove with form between the exhaust hole pore wall of inserting first exhaust passageway.

In some embodiments, the annular groove that extends along the horizontal direction is formed on the annular bulge of first core, the annular groove with the first part in exhaust hole forms with the interface of second part the second exhaust passage.

The utility model discloses an among the some embodiments, the shaping has the second air discharge duct on the pore wall of the second portion in the exhaust hole of inserting, the second air discharge duct with form between the first core third exhaust passage.

The utility model discloses an among the partial implementation, still include second core and third core, the second core is located the second core, the third core is located between first core and the second core, its one end butt in on the first core, other end butt in on the second core.

The technical scheme of the utility model prior art relatively has following technological effect:

the utility model provides an among the casting device for processing deep hole foundry goods, owing to adopt insert and first core and move, the first die cavity cooperation of static mould is equipped with two at least airflow flow direction vertically exhaust passage between insert and the first core in order to form the deep hole structure of foundry goods. By changing the exhaust direction to increase the exhaust stroke, the molten metal is gradually solidified in the exhaust passage with the lengthened stroke during the casting process without flowing out of the mold. This kind of structure can make exhaust passage's air current cross-section compare the current exhaust passage can design bigger, and can not lead to the metal liquid to flow out the mould, can effectively promote exhaust effect.

Drawings

The objects and advantages of the present invention will be understood from the following detailed description of the preferred embodiments of the invention, taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a schematic structural view of a casting apparatus for machining deep-hole castings according to the prior art;

FIG. 2 is a cross-sectional view of one embodiment of a casting apparatus for machining deep-hole castings according to the present invention;

FIG. 3 is a sectional view taken along line B-B of FIG. 2;

fig. 4 is a schematic structural diagram of a first core in the casting device for machining deep-hole castings according to the present invention;

fig. 5 is a deep hole casting manufactured by the casting device of the present invention.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Fig. 2 and 3 show a specific embodiment of a casting device (hereinafter referred to as a casting device) for processing a deep-hole casting according to the present invention, which is used for processing a deep-hole faucet casting a shown in fig. 5. The casting device comprises a static die 20 and a movable die 10, a first cavity a1 and a second cavity a2 which are communicated with each other are formed between the static die 20 and the movable die 10, the extending directions of the first cavity a1 and the second cavity a2 are set to be angles, the first cavity a1 extends to the end face of the static die 20 far away from the movable die 10, the second cavity a2 is used for forming a main body portion A1 of a faucet casting A, and the first cavity a1 is used for forming a deep hole portion A2 of the faucet casting A; the casting mould also comprises an insert 30 and a first core 40, wherein the insert 30 is used for being matched with a first cavity a1 to form a casting deep hole structure, the insert 30 is provided with a vent hole 31, the first core 40 is inserted into the vent hole 31 of the insert 30, and the insert 30 is arranged on the static mould 20 and is used for blocking a metal-filled channel of the first cavity a 1; at least two exhaust passages with vertical airflow direction are arranged between the insert 30 and the first core 40.

In the casting device, the insert 30 and the first core 40 are adopted to be matched with the first cavity a1 to form a deep hole structure of a casting, at least two exhaust channels with vertical airflow flow direction are arranged between the insert 30 and the first core 40, the exhaust stroke is increased by changing the exhaust direction, molten metal is gradually solidified in the exhaust channel with the lengthened stroke and does not flow out of the mold, the airflow section of the exhaust channel can be designed to be larger than that of the existing exhaust channel, the molten metal cannot flow out of the mold, and the exhaust effect can be effectively improved.

Specifically, the first core 40 is formed by resin sand, and the material of the first core 40 has air permeability, so that the casting device using the first core 40 has better exhaust effect than the existing casting device using metal core pulling.

In an alternative embodiment, the exhaust passage includes a first exhaust passage s1, a second exhaust passage s2 and a third exhaust passage s3, wherein the first exhaust passage s1 and the second exhaust passage s2 are located in the first cavity a1, the third exhaust passage s3 is located outside the first cavity a1, the first exhaust passage s1 and the third exhaust passage s3 are straight passages extending in a vertical direction, the second exhaust passage s2 is an annular passage extending in a horizontal direction, and air in the first cavity a1 is discharged out of the cavity along the first exhaust passage s1, the second exhaust passage s2 and the third exhaust passage s3 as the molten metal is filled, and the molten metal is gradually solidified in the elongated exhaust passage.

More specifically, the first exhaust passage s1 and the third exhaust passage s3 are located on both sides of the first core 40 in the radial direction, respectively, so that the exhaust passages are further lengthened, the exhaust is more sufficient, and the molten metal is prevented from flowing out of the mold.

Specifically, the gas flow section of the first exhaust passage s1 is larger than that of the third exhaust passage s3, and the gas flow sectional area of the first exhaust passage s1 is 40-50mm ² The airflow cross-sectional area of the third exhaust passage s3 is 10-20mm ² The first exhaust passage s1 has a slightly larger airflow section to facilitate rapid exhaust, and the third exhaust passage s3 has a reduced airflow section to prevent molten metal from flowing out of the mold.

In an alternative embodiment, the gas discharge hole 31 of the insert 30 includes a first portion 31a located in the first cavity a1 and a second portion 31b located outside the first cavity a1, the first portion 31a has a larger hole diameter than the second portion 31b, the first core 40 is formed in an approximately cylindrical shape, an annular protrusion 41 is provided on a middle cylindrical portion of the cylindrical shape, the annular protrusion 41 abuts on a boundary surface between the first portion 31a and the second portion 31b of the gas discharge hole 31, a region of the first core 40 opposite to the first portion 31a of the gas discharge hole 31 forms a metal filling surface, and a region of the first core 40 opposite to the second portion 31b of the gas discharge hole 31 is used for blocking molten metal and forming the third gas discharge passage s 3.

The formation structures of the first exhaust passage s1, the second exhaust passage s2, and the third exhaust passage s3 are not unique; specifically, as shown in fig. 4, the annular projection 41 of the first core 40 is formed with a first exhaust groove 41a extending in the vertical direction, and the first exhaust passage s1 is formed between the first exhaust groove 41a and the wall of the exhaust hole 31 of the insert 30; the annular protrusion 41 of the first core 40 is formed with an annular groove 41b extending in the horizontal direction, and the interface of the annular groove 41b with the first portion 31a and the second portion 31b of the exhaust hole 31 forms the second exhaust passage s 2. A second vent groove 31c is formed in a hole wall of the second portion 31b of the vent hole 31 of the insert 30, and the third vent passage s3 is formed between the second vent groove 31c and the first core 40.

The casting device further comprises a second core 50 and a third core 60, wherein the second core 50 is located in a second cavity a2, the third core 60 is located between the first core 40 and the second core 50, one end of the third core abuts against the first core 40, the other end of the third core abuts against the second core 50, partial areas of the second core 50 and the third core 60 form a main body of the faucet casting, and partial areas of the first core 40 and the third core 60 form a deep hole portion A2 of the faucet casting.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. A casting apparatus for machining a deep-hole casting, comprising:

the mould comprises a static mould and a movable mould, wherein a first cavity and a second cavity which are communicated with each other are formed between the static mould and the movable mould, the extending directions of the first cavity and the second cavity form a set angle, the first cavity extends to the end face of the static mould far away from the movable mould, the second cavity is used for forming the main body part of the deep-hole casting, and the first cavity is used for forming the deep-hole part of the deep-hole casting;

the insert is provided with an exhaust hole, the first core is inserted into the exhaust hole of the insert, and the insert is mounted on the static die and used for plugging a metal mold filling channel of the first cavity;

at least two exhaust passages with vertical airflow direction are arranged between the insert and the first mold core.

2. The casting apparatus for machining a deep-hole casting according to claim 1, wherein the exhaust passage comprises a first exhaust passage, a second exhaust passage, and a third exhaust passage, wherein the first exhaust passage and the second exhaust passage are located in the first cavity, the third exhaust passage is located outside the first cavity, and the air flow is exhausted along the first exhaust passage, the second exhaust passage, and the third exhaust passage.

3. The casting apparatus for machining a deep-hole casting according to claim 2, wherein the first exhaust passage and the third exhaust passage are straight passages extending in a vertical direction, and the second exhaust passage is an annular passage extending in a horizontal direction.

4. The casting apparatus for deep-hole casting according to claim 3, wherein the first exhaust passage and the third exhaust passage are located on both radial sides of the first core, respectively.

5. The casting apparatus for machining a deep-hole casting according to claim 2, wherein an air flow section of the first exhaust passage is larger than an air flow section of the third exhaust passage.

6. The casting apparatus for machining a deep-hole casting according to claim 2, wherein the vent hole of the insert includes a first portion located in the first cavity and a second portion located outside the first cavity, the first portion has a larger bore diameter than the second portion, and the first core is provided with an annular projection abutting on an interface of the first portion and the second portion of the vent hole.

7. The casting apparatus for machining a deep-hole casting according to claim 6, wherein the annular protrusion of the first core is formed with a first exhaust groove extending in a vertical direction, and the first exhaust passage is formed between the first exhaust groove and the exhaust hole wall of the insert.

8. The casting apparatus for deep-hole casting according to claim 7, wherein an annular groove extending in a horizontal direction is formed in the annular projection of the first core, and an interface of the annular groove and the first and second portions of the exhaust hole forms the second exhaust passage.

9. The casting apparatus for machining a deep-hole casting according to claim 8, wherein a second vent groove is formed in a hole wall of the second portion of the vent hole of the insert, and the third vent passage is formed between the second vent groove and the first core.

10. The casting apparatus for machining a deep-hole casting according to claim 1, further comprising a second core and a third core, wherein the second core is located in the second cavity, and the third core is located between the first core and the second core, and one end of the third core abuts against the first core and the other end of the third core abuts against the second core.