CN219310005U

CN219310005U - Sand mould and foundry goods

Info

Publication number: CN219310005U
Application number: CN202223254924.3U
Authority: CN
Inventors: 吴彦锋; 杨金亮; 苏直新; 黄昌弟; 苏银进; 张慧
Original assignee: Zhejiang Ousai Auto Part Casting Co ltd
Current assignee: Zhejiang Ousai Auto Part Casting Co ltd
Priority date: 2022-12-03
Filing date: 2022-12-03
Publication date: 2023-07-07
Anticipated expiration: 2032-12-03

Abstract

The application relates to the technical field of sand casting, discloses a sand mould and foundry goods, including last section mould, last die cavity has been seted up on the terminal surface of last section mould, go up the section mould and have been seted up the casting passageway on keeping away from the terminal surface of last die cavity, set up reposition of redundant personnel passageway, place chamber, drainage passageway in the last section mould, reposition of redundant personnel passageway and casting passageway intercommunication, the reposition of redundant personnel passageway runs through to place the terminal surface that the cavity was kept away from to the chamber, the drainage passageway runs through to placing the side of chamber circumference, drainage passageway and last die cavity intercommunication, place the intracavity and be provided with the dog, the dog is used for slowing down the velocity of flow of molten metal, the dog is higher than the drainage passageway near the terminal surface of reposition of redundant personnel passageway, and this application has to slow down and stabilize molten metal velocity of flow for the quality when the foundry goods shaping is good.

Description

Sand mould and foundry goods

Technical Field

The application relates to the technical field of sand mould casting, in particular to a sand mould and a casting.

Background

Sand mould casting is a widely used casting mode, a casting mould is manufactured by sand, the forming cavities of an upper mould and a lower mould are cast by molten iron, after castings are cooled, the sand mould is broken by vibration, so that the castings can be separated from the sand mould, and the precoated sand casting technology is used for casting the castings, such as valve body covers, pump bodies, gearbox bodies and other automobile parts.

In the related art, the sand mould includes upper mould and lower mould, and upper die cavity has been seted up on the terminal surface of upper mould towards the lower mould, and lower die cavity has been seted up on the terminal surface of lower mould towards upper mould, and when upper mould and lower mould installation, upper die cavity and lower die cavity intercommunication have seted up the casting passageway on the upper mould, and the casting passageway communicates upper die cavity.

The molten metal directly enters the upper cavity and the lower cavity through the casting channel, and when the molten metal is intersected in the upper cavity or the lower cavity, if the molten metal is too fast in flow speed, the phenomena of cold insulation, gas holding, choking and the like of the cast are caused, so that the cast has quality problems.

Disclosure of Invention

In order to solve the problem of too high a metal flow rate, the application provides a sand mould and a casting.

In a first aspect, the present application provides a sand mold, which adopts the following technical scheme:

the utility model provides a sand mould, includes mould and lower mould, last die cavity has been seted up on the terminal surface of last mould, lower mould has been seted up towards the terminal surface of last mould down the die cavity, last die cavity has been kept away from to last mould on the terminal surface of last die cavity has been seted up, the pouring passageway has been linked together in proper order to last die cavity and has been shunted passageway, has placed chamber, drainage passageway, the shunting passageway runs through to place the terminal surface that the chamber kept away from the last die cavity, the drainage passageway runs through to place the side of chamber circumference, it is provided with the dog to place the intracavity, the dog is located the shunting passageway and places the intercommunication department in chamber, the terminal surface that the dog is close to the shunting passageway is higher than the drainage passageway.

Through adopting above-mentioned technical scheme, reach the intracavity of placing through the molten metal from casting passageway flow direction reposition of redundant personnel passageway, the baffle blocks the molten metal that flows from the reposition of redundant personnel passageway in, thereby the molten metal need not directly drip in placing the intracavity, thereby reduce the height that the molten metal falls, and then reduce the molten metal and fall and bring the possibility of rocking, when the molten metal is placing the intracavity and accumulating the height of drainage passageway, the molten metal just flows to the drainage passageway, because of the speed that the molten metal accumulated is slow, the molten metal is slow in the drainage passageway, the molten metal of placing the intracavity can not rock, make the molten metal that flows to the drainage passageway can not increase suddenly, thereby let the molten metal flow rate stable, and then reduce the foundry goods problem that produces because of the molten metal flow velocity is too fast, make the quality of final foundry goods obtain promoting.

Optionally, a drainage groove is formed in the end face, close to the drainage channel, of the placement cavity, and the drainage groove is communicated with the drainage channel.

Through adopting above-mentioned technical scheme, molten metal accessible drainage groove and drainage passageway are close to the opening of placing the chamber and flow to the drainage passageway together, increase and place the chamber and flow to the drainage passageway opening.

Optionally, the groove wall of the drainage groove far away from the diversion channel is coplanar with the groove wall of the drainage channel far away from the diversion channel.

Through adopting above-mentioned technical scheme for when the molten metal is diffused to the drainage passageway and is kept away from the terminal surface of reposition of redundant personnel passageway, alright follow drainage groove department to flow in the drainage passageway, make the molten metal can not place the intracavity accumulation too much.

Optionally, a limiting ring is arranged on the end face of the placement cavity, which is close to the diversion channel, and the limiting ring is opposite to the opening of the diversion channel, which is close to the placement cavity.

Through adopting above-mentioned technical scheme, through the spacing of spacing ring to the molten metal for the molten metal can only follow fixed direction and flow to other directions because of the angle of reposition of redundant personnel passageway, and lead to the molten metal not to contact the dog and can not produce the condition of slowing down.

Optionally, the dog upper end stretches into the spacing ring inside, just the dog upper end outside has the clearance with spacing ring inside.

Through adopting above-mentioned technical scheme, set up in the spacing ring through dog part for the molten metal can only flow down along the surface of dog, make the molten metal flow direction more accurate, make the molten metal can not produce the impact to placing intracavity molten metal and rock.

Optionally, one end of the stop block, which is close to the shunt channel, is hemispherical.

Through adopting above-mentioned technical scheme, the molten metal flows to place the chamber through hemispherical dog for the molten metal can not stop and lead to follow-up molten metal to producing the impact to the molten metal that stops and make the molten metal splash away on the terminal surface that the baffle is close to the reposition of redundant personnel passageway, thereby make the molten metal flow down smoothly from the surface of dog.

Optionally, an air outlet hole is formed in the end face, far away from the upper cavity, of the placing cavity, and the air outlet hole penetrates through the upper die.

Through adopting above-mentioned technical scheme, will place the air in the chamber and pass through the venthole and discharge for do not carry the air as far as possible in the molten metal and flow, make the foundry goods be difficult to appear the phenomenon of bubble, promote the quality of foundry goods.

Optionally, a split block is arranged in the casting channel, and an inclined plane is arranged on the end surface of the split block, which is far away from the upper cavity.

Through adopting above-mentioned technical scheme, the reposition of redundant personnel piece is with in the molten metal guide drainage passageway for in the molten metal can flow drainage passageway fast, make the molten metal can not accumulate at the casting passageway.

In a second aspect, the present application provides a casting, which adopts the following technical scheme:

a casting is made from sand molds.

By adopting the technical scheme, the casting is integrally formed through the sand mould.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the molten metal is accumulated in the placing cavity, and the molten metal passes through the diversion channel and the drainage channel, so that the flowing distance of the molten metal is increased, and the flowing speed of the molten metal is reduced; the impact of the molten metal on the molten metal in the placing cavity is reduced by the molten metal drops falling on the baffle plate; by placing the metal liquid accumulated in the cavity, the speed of the metal liquid passing through the drainage channel is slowed, and the quality is stable and good when the casting is formed due to the slow and stable flow speed of the metal liquid.

2. Through the dog setting in the spacing ring for the molten metal can only flow through the surface of dog on the terminal surface that the chamber kept away from the reposition of redundant personnel passageway is placed to the place chamber, thereby reduces the molten metal and produces the possibility of skew when placing the intracavity, makes the molten metal arrive and places the intracavity time and can be slowed down.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present application;

FIG. 2 is a top view of an embodiment of the present application;

FIG. 3 is an exploded view of an embodiment of the present application;

FIG. 4 is an exploded view of another view of an embodiment of the present application;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 2;

fig. 6 is an enlarged schematic view of the portion B in fig. 5.

Reference numerals: 1. a top mold; 11. an upper cavity; 12. casting the channel; 121. a shunt block; 122. an inclined plane; 13. a shunt channel; 14. a placement cavity; 141. a stop block; 142. drainage grooves; 143. a limiting ring; 144. an air outlet hole; 15. a drainage channel; 2. a lower die; 21. a lower cavity; 3. and (3) casting.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-6.

The embodiment discloses a sand mould and a casting. Referring to fig. 1, a sand mold includes an upper mold 1 and a lower mold 2. Four upper cavities 11 are formed on the end surface of the upper die 1, which is close to the lower die 2.

Referring to fig. 2 and 3, four lower cavities 21 are formed in the end surface of the lower die 2 adjacent to the upper die 1. When the upper die 1 and the lower die 2 are mounted, each upper cavity 11 communicates with the corresponding lower cavity 21. The four upper cavities 11 and the lower cavities 21 are each circumferentially distributed along the axis of the upper die 1.

Referring to fig. 2 and 3, the casting 3 is obtained by pouring molten metal into the upper die 1 and the lower die 2, cooling and molding, and demolding.

Referring to fig. 4, the end surface of the upper die 1 remote from the lower die 2 is provided with a casting channel 12. Two diversion channels 13 are arranged in the upper die 1. The two diversion channels 13 are communicated with the casting channel 12, and the two diversion channels 13 are symmetrically distributed along the axial direction of the upper die 1. The bottom wall of the casting channel 12 is integrally provided with a split block 121, the end surface of the split block 121, which is far away from the upper cavity 11, is provided with two inclined planes 122 which are symmetrically arranged, and the two inclined planes 122 incline towards the corresponding drainage channels 15.

Referring to fig. 5, two placing cavities 14 are formed in the upper die 1, and the two placing cavities 14 are communicated with the corresponding diversion channels 13. The shunt channels 13 penetrate to the end face of the placement cavity 14 remote from the upper cavity 11. A limiting ring 143 is integrally formed in the placing cavity 14, and the limiting ring 143 surrounds the opening of the placing cavity 14, which is close to the diversion channel 13.

Referring to fig. 5, a stopper 141 is integrally formed on the end surface of the placement chamber 14 remote from the casting channel 12. The stopper 141 is cylindrical, and the end surface of the stopper 141 near the diverting passage 13 is arc-shaped. The stopper 141 has a diameter smaller than the inner diameter of the stopper 143. The arcuate end surface of the stopper 141 is positioned inside the stopper 143.

Referring to fig. 4 and 5, the end face of the stopper 141 near the diverting passage 13 abuts against the end face of the placement chamber 14 near the diverting passage 13. The end surface of the placing cavity 14, which is close to the casting channel 12, is provided with an air outlet hole 144, and the air outlet hole 144 penetrates through the end surface of the upper die 1, which is far away from the upper die cavity 11.

Referring to fig. 5, four drainage channels 15 are formed in the upper die 1, and the four drainage channels 15 are respectively communicated with the corresponding upper die cavity 11. The two drainage channels 15 are communicated with the placement cavity 14, and the two drainage channels 15 are respectively positioned on two opposite sides of the corresponding placement cavity 14. The opening of the drainage channel 15 near the placement cavity 14 is lower than the end surface of the stop block 141 near the diversion channel 13.

Referring to fig. 4 and 5, four drainage grooves 142 are formed in the end face, close to the drainage channels 15, of the placement cavity 14, and the four drainage grooves 142 are respectively communicated with the four corresponding drainage channels 15. The side of the drainage groove 142 near the placement cavity 14 is higher than the side of the drainage groove 142 away from the placement cavity 14.

The implementation principle of the sand mould and the casting provided by the embodiment of the application is as follows: the molten metal reaches the diversion channel 13 through the casting channel 12, flows into the placement cavity 14 through the two diversion channels 13, and flows out of the air outlet holes 144, then flows onto the stop block 141 through the limiting ring 143, and flows from the outer circumferential surface of the stop block 141 to the end surface of the placement cavity 14 far away from the diversion channel 13, so that the molten metal can be statically accumulated in the placement cavity 14 until the molten metal overflows the diversion trench 142 and the diversion channel 15, flows to the upper cavity 11 and the lower cavity 21 through the diversion channel 15, and finally the casting 3 is obtained.

The foregoing description of the preferred embodiments of the present application is not intended to limit the utility model, but is intended to cover any modifications, equivalents, improvements, etc. that fall within the spirit and scope of the present application.

Claims

1. The utility model provides a sand mould, includes cope match-die (1) and bed die (2), last die cavity (11) have been seted up on the terminal surface of cope match-die (1), bed die (21) have been seted up towards the terminal surface of cope match-die (1) in bed die (2), casting passageway (12) have been seted up on the terminal surface of cope match-die (1) keeping away from last die cavity (11), its characterized in that: the casting channel (12) is communicated with the upper cavity (11) in sequence, the flow distribution channel (13) is communicated with the placing cavity (14) and the drainage channel (15), the flow distribution channel (13) penetrates through the end face of the placing cavity (14) far away from the upper cavity (11), the drainage channel (15) penetrates through the circumferential side face of the placing cavity (14), the baffle block (141) is arranged in the placing cavity (14), the baffle block (141) is located at the communicating position of the flow distribution channel (13) and the placing cavity (14), and the end face of the baffle block (141) close to the flow distribution channel (13) is higher than the drainage channel (15).

2. A sand mould according to claim 1, wherein: the end face, close to the drainage channel (15), of the placement cavity (14) is provided with a drainage groove (142), and the drainage groove (142) is communicated with the drainage channel (15).

3. A sand mould according to claim 2, wherein: the groove wall of the diversion trench (142) far away from the diversion channel (13) is coplanar with the groove wall of the diversion channel (15) far away from the diversion channel (13).

4. A sand mould according to claim 1, wherein: the end face, close to the distribution channel (13), of the placement cavity (14) is provided with a limiting ring (143), and the limiting ring (143) is opposite to an opening, close to the placement cavity (14), of the distribution channel (13).

5. A sand mould according to claim 4, wherein: the upper end of the stop block (141) stretches into the limiting ring (143), and a gap is reserved between the outer side of the upper end of the stop block (141) and the inner side of the limiting ring (143).

6. A sand mould according to claim 1, wherein: one end of the stop block (141) close to the diversion channel (13) is hemispherical.

7. A sand mould according to claim 1, wherein: an air outlet hole (144) is formed in the end face, far away from the upper cavity (11), of the placing cavity (14), and the air outlet hole (144) penetrates through the upper die (1).

8. A sand mould according to claim 1, wherein: a split block (121) is arranged in the casting channel (12), and an inclined plane (122) is arranged on the end surface of the split block (121) far away from the upper cavity (11).

9. A casting, characterized in that: made from the sand mould of any one of claims 1-8.