CN211276436U

CN211276436U - Casting mould with air exhaust and ejection functions

Info

Publication number: CN211276436U
Application number: CN201922398723.2U
Authority: CN
Inventors: 周其刚
Original assignee: Nanjing Omd Application Material Science And Technology Co ltd
Current assignee: Nanjing Omd Application Material Science And Technology Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-08-18
Anticipated expiration: 2029-12-27

Abstract

The utility model discloses a casting mould with air-extracting ejection function, which relates to the technical field of casting moulds and comprises a lower mould and an upper mould arranged on the lower mould, wherein a cavity is arranged in the lower mould, the upper end surface of the upper mould is provided with a sprue gate, the bottom of the sprue gate is connected with a tapered runner with a big top and a small bottom, the lower port of the tapered runner is arranged on the lower end surface of the upper mould and is communicated with the cavity in the lower mould, an exhaust duct for communicating the cavity with the outside air is arranged on two sides in the upper mould, an ejection device for ejecting a casting of the cavity is arranged in the lower mould, the exhaust duct for communicating the cavity with the outside air is arranged on two sides in the upper mould, the gas in the mould is discharged, so that the raw material can be poured into the whole mould, the use is convenient, the quality of the casting is ensured, and the casting in the, compared with the prior art, the tool prying machine has the advantages that the prying rod and other tools are utilized to pry out, the labor intensity of workers is reduced, and the machining efficiency is high.

Description

Casting mould with air exhaust and ejection functions

Technical Field

The utility model relates to a casting mould technical field, in particular to casting mould with it is ejecting function to bleed.

Background

The casting mold is used for obtaining the structural shape of the part, other easily-formed materials are used for forming the structural shape of the part in advance, then the part is placed into the mold, a cavity with the same structural size as the part is formed in the sand mold, then the fluid liquid is poured into the cavity, and the part with the same structural shape as the mold can be formed after the fluid liquid is cooled and solidified.

But when casting, because mould internal seal, gaseous unable the getting rid of to lead to the raw materials can't pour into a mould whole mould, have the flaw during feasible foundry goods shaping, influenced the quality of foundry goods, the foundry goods shaping back in addition, all utilizes instruments such as crowbar to prize out through artifical firmly, has increased workman's intensity of labour, wastes time and energy, and machining efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a casting mould with ejecting function of bleeding has solved the problem that the inside gas of casting in-process mould can't be got rid of, has also reduced workman's intensity of labour simultaneously, labour saving and time saving, and machining efficiency is high.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a casting mould with ejecting function of bleeding, includes the lower mould and installs the last mould on the lower mould, the inside of lower mould is equipped with the die cavity, it is equipped with the sprue gate to go up the mould up end, the bottom of sprue gate is connected with big-end-up's toper runner, the lower port of toper runner is located go up the mould down the terminal surface and with die cavity in the lower mould is linked together, be equipped with the exhaust duct who is used for communicateing die cavity and outside air by both sides in the last mould, be equipped with in the lower mould and be used for with the ejecting device of the foundry goods jack-up of.

Preferably, ejection device is including locating storage tank in the bed die, the interior diapire of storage tank is equipped with a actuating mechanism, actuating mechanism's output is connected with a slide plate, the slide plate is kept away from actuating mechanism's one side has set firmly more than one ejector pin, seted up at least one intercommunication on the interior roof of storage tank the through-hole of storage tank and die cavity, the ejector pin extends to in the through-hole.

Preferably, the driving mechanism is a hydraulic cylinder, a piston rod of the hydraulic cylinder is fixedly connected with the sliding plate, a compression spring is sleeved on the outer peripheral side of the ejector rod, the bottom end of the compression spring is fixedly connected with the sliding plate, and the top end of the compression spring is abutted to the inner top wall of the accommodating groove.

Preferably, a filter screen is installed in the pouring opening.

Preferably, the shape of the filter screen is matched with the shape of the inner surface of the pouring gate, and the edge of the filter screen is provided with an eaves part which is lapped with the upper end surface of the upper die.

Preferably, the top end of the exhaust duct is provided with a wind ball.

Preferably, positioning pins are fixed on two side edges of the upper die, positioning holes are formed in two side edges of the lower die, and the positioning pins are fixedly inserted in the positioning holes.

The utility model has the advantages as follows:

the utility model has the advantages that the exhaust duct for communicating the cavity with the outside air is arranged at the two sides inside the upper die, so that the gas inside the die can be exhausted, the raw material can be poured into the whole die, the use is convenient, and the quality of the casting is ensured; simultaneously can be ejecting with the foundry goods in the die cavity through ejecting device, compare the traditional art and utilize tools such as crowbar to prize out hard, reduced workman's intensity of labour, labour saving and time saving, machining efficiency is high.

Drawings

Fig. 1 is a schematic structural diagram of a casting mold with an air-extracting ejection function according to an embodiment of the present invention;

FIG. 2 is a schematic top view of the filter screen of FIG. 1;

fig. 3 is a schematic structural view of the filter screen omitted in fig. 1.

In the figure: 10. a lower die; 20. an upper die; 30. a cavity; 40. a tapered flow passage; 50. an exhaust duct; 60. an ejection device; 61. a containing groove; 62. a drive mechanism; 63. a slide plate; 64. a top rod; 65. a compression spring; 70. a filter screen; 71. an eave portion; 80. a wind ball; 90. positioning pins; 100. and a pouring gate.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly. Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Referring to fig. 1, 2 and 3, the present invention provides a casting mold with air-extracting and ejecting functions, which comprises a lower mold 10 and an upper mold 20 mounted on the lower mold 10, a cavity 30 is arranged in the lower die 10, a pouring gate 100 is arranged on the upper end surface of the upper die 20, the bottom of the pouring gate 100 is connected with a tapered runner 40 with a big top and a small bottom, the lower port of the tapered runner 40 is arranged on the lower end surface of the upper die 20 and is communicated with the die cavity 30 in the lower die 10, the upper die 20 is internally provided with exhaust ducts 50 for communicating the die cavity with the outside air by two sides, the lower die 10 is internally provided with an ejecting device 60 for ejecting the casting of the die cavity 30, the utility model discloses a through the upper die 20 is internally provided with the exhaust ducts 50 for communicating the die cavity 30 with the outside air by two sides, the gas in the die can be discharged, so that the raw materials can be poured into the whole die, the use is convenient, and the quality of the casting is ensured; meanwhile, the casting in the cavity 30 can be ejected out through the ejection device 60, and compared with the prior art, the casting is pried out by tools such as a prying bar, so that the labor intensity of workers is reduced, time and labor are saved, and the machining efficiency is high.

The ejection device 60 comprises a containing groove 61 arranged in the lower die 10, a driving mechanism 62 is arranged on the inner bottom wall of the containing groove 61, a sliding plate 63 is connected to the output end of the driving mechanism 62, three ejector rods 64 are fixedly arranged on one side, deviating from the driving mechanism 62, of the sliding plate 63, through holes for communicating the containing groove 61 with the cavity 30 are formed in the inner top wall of the containing groove 61, the ejector rods 64 extend into the through holes, the sliding plate 63 is driven to move upwards through the driving mechanism 62 during die opening, the sliding plate 63 moves upwards to drive the three ejector rods 64 to move upwards, and castings in the cavity 30 are ejected through the ejector rods 64.

Further, the driving mechanism is preferably a hydraulic cylinder, a piston rod of the hydraulic cylinder is fixedly connected with the sliding plate 63, a compression spring 65 is sleeved on the outer peripheral side of the ejector rod 64, the bottom end of the compression spring 65 is fixedly connected with the sliding plate 63, the top end of the compression spring 65 is abutted to the inner top wall of the accommodating groove 61, after demolding is completed, the pressure of the hydraulic cylinder is relieved, the ejector rod 64 resets under the return action of the compression spring 65, mold closing of the upper mold 20 and the lower mold 10 is performed again, so that mold closing and opening are more convenient, and repeated work and batch production can be performed.

Install filter screen 70 in sprue gate 100, filter the solid impurity of pouring liquid inside through filter screen 70, keep the die cavity 30 clean, ensured the foundry goods quality, the appearance of filter screen 70 and the internal surface shape phase-match of sprue gate 100, the edge of filter screen 70 be equipped with last mould 20 up end overlap joint's eaves portion 71, be convenient for clear up the solid impurity in the filter screen 70.

The air ball 80 is arranged at the top end of the exhaust duct 50, when pouring liquid enters the cavity 30, a large amount of hot air enters the exhaust duct 50, pressure difference is formed between the upper end and the lower end of the exhaust duct 50 due to temperature difference, ascending air flow is formed in the exhaust duct 50, the air ball 80 is driven to rotate at a high speed, the hot air is discharged, the problem that a large amount of bubbles are generated due to the hot air is solved, and the quality of castings is further improved.

Positioning pins 90 are fixed on two side edges of the upper die 20, positioning holes are formed in two side edges of the lower die 10, the positioning pins 90 are fixedly inserted in the positioning holes, and the upper die 20 and the lower die 10 can be accurately matched conveniently through the positioning pins 90 and the positioning holes.

The above description specifically describes the preferred embodiment of the present invention, but of course, the present invention can also adopt different forms from the above embodiments, and equivalent changes or corresponding modifications made by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope of the present invention.

Claims

1. The utility model provides a casting mould with ejecting function of bleeding, its characterized in that includes the lower mould and installs the last mould on the lower mould, the inside of lower mould is equipped with the die cavity, it is equipped with the sprue gate to go up the mould up end, the bottom of sprue gate is connected with big-end-up's toper runner, the lower port of toper runner is located go up mould down the terminal surface and with the die cavity in the lower mould is linked together, be equipped with the exhaust duct that is used for communicateing die cavity and outside air near both sides in the upper mould, be equipped with in the lower mould and be used for with the ejecting device of foundry goods jack-up of die.

2. The casting mold with the air-extracting and ejecting function as claimed in claim 1, wherein the ejecting device comprises an accommodating groove disposed in the lower mold, a driving mechanism is disposed on an inner bottom wall of the accommodating groove, an output end of the driving mechanism is connected with a sliding plate, one side of the sliding plate, which is away from the driving mechanism, is fixedly provided with at least one ejector rod, an inner top wall of the accommodating groove is provided with at least one through hole communicating the accommodating groove with the mold cavity, and the ejector rod extends into the through hole.

3. The casting mold with the air-extracting and ejecting function as claimed in claim 2, wherein the driving mechanism is a hydraulic cylinder, a piston rod of the hydraulic cylinder is fixedly connected with the sliding plate, a compression spring is sleeved on an outer peripheral side of the ejector rod, a bottom end of the compression spring is fixedly connected with the sliding plate, and a top end of the compression spring abuts against an inner top wall of the accommodating groove.

4. A casting mold with air-extracting ejection function according to any one of claims 1 to 3, wherein a filter screen is installed in the pouring gate.

5. The casting mold with air suction and ejection functions as claimed in claim 4, wherein the shape of the filter screen is matched with the shape of the inner surface of the pouring gate, and the edge of the filter screen is provided with an eaves overlapping with the upper end surface of the upper mold.

6. The casting mold with air-extracting ejection function according to claim 1, wherein the top end of the air exhaust duct is provided with a wind ball.

7. The casting mold with air-extracting and ejecting functions as claimed in claim 1, wherein positioning pins are fixed on two sides of the upper mold, positioning holes are formed on two sides of the lower mold, and the positioning pins are fixedly inserted into the positioning holes.