CN218693634U

CN218693634U - Sand casting mold for bullet train air conditioner parts

Info

Publication number: CN218693634U
Application number: CN202222874823.XU
Authority: CN
Inventors: 李全顺
Original assignee: Huizhou Dianzhan Hardware Product Co ltd
Current assignee: Huizhou Dianzhan Hardware Product Co ltd
Priority date: 2022-10-28
Filing date: 2022-10-28
Publication date: 2023-03-24
Anticipated expiration: 2032-10-28

Abstract

The utility model discloses a motor car air conditioner spare part sand mold casting mould, including shaping subassembly and pouring subassembly, the shaping subassembly includes shaping upper die, shaping lower mould and shaping psammitolite, and the surface of shaping upper die constitutes the upper die shaping chamber, and the surface of shaping lower mould constitutes the lower mould shaping chamber, and the shaping psammitolite is used for shaping the helicla flute; the pouring assembly comprises a first inner pouring gate and a second inner pouring gate, and the first inner pouring gate and the second inner pouring gate are respectively arranged on two sides of the upper forming die. The utility model discloses a set up the shaping subassembly and pour the subassembly to can set up in motor car air conditioner spare part both sides thick wall department through with first ingate and second ingate, make the molten metal fill up the shaping chamber from the both sides in shaping chamber fast evenly, and then avoid middle helicla flute thin wall department directly to receive the impact of molten metal and damaged, and both sides are filled simultaneously, can make the molten metal fill more fully, in time the feeding, thereby avoid helicla flute regional defects such as shrinkage cavity to appear, and then improve product quality.

Description

Sand casting mold for bullet train air conditioner parts

Technical Field

The utility model relates to a sand casting mould production technical field especially relates to a motor car air conditioner spare part sand casting mould.

Background

Sand casting refers to a casting process that produces a casting in a sand mold. Steel, iron and most nonferrous alloys are cast by sand casting. The molding material used for sand casting is cheap and easy to obtain, the casting mould is simple and convenient to manufacture, and the casting mould can adapt to single-piece production, batch production and mass production of castings, and is a basic process in casting production for a long time. In the process of sand casting, the position and the structural arrangement of a die casting system, the structural characteristics of a casting part and the like all affect the forming quality of the final casting part, and once the casting system is improperly arranged, the casting part is easy to form casting defects such as shrinkage cavities, shrinkage porosity and the like.

As shown in fig. 1, a bullet train air conditioner component 20 includes a housing 21, a spiral groove 22 is formed in the housing 21, and the spiral groove 22 is of a spiral structure and has an irregular shape, so that insufficient metal solution filling is easily caused, the bullet train air conditioner component 20 shrinks in a condensation process, shrinkage cavities are generated due to the fact that metal solution cannot be supplemented, and the rejection rate of cast parts is high, and therefore, the arrangement and distribution of a pouring system are particularly important for products of this type.

Therefore, how to design a sand casting mold which can improve the production quality of a casting and avoid the casting defects such as shrinkage cavity and the like of the casting is a problem which needs to be solved by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the weak point among the prior art, providing one kind and can avoid casting parts casting defects such as shrinkage cavity to improve casting parts production quality's motor car air conditioner spare part sand type casting mould.

The purpose of the utility model is realized through the following technical scheme:

a sand casting mould for bullet train air conditioner parts comprises: the forming assembly comprises an upper forming die, a lower forming die and a forming sand core, wherein the outer surface of the upper forming die forms an upper die forming cavity, the outer surface of the lower forming die forms a lower die forming cavity, the upper die forming cavity and the lower die forming cavity jointly form a forming cavity of the shell, the forming sand core is arranged between the upper die forming cavity and the lower die forming cavity, and the forming sand core is used for forming the spiral groove; the pouring assembly comprises a first inner pouring gate and a second inner pouring gate, the first inner pouring gate and the second inner pouring gate are respectively arranged on two sides of the upper forming die, and the first inner pouring gate and the second inner pouring gate are oppositely arranged.

In one embodiment, the molding assembly further includes an upper mold fixing plate and a plurality of upper mold positioning pins, each of the upper mold positioning pins is disposed on the upper mold fixing plate, and the upper molding mold is disposed on the upper mold fixing plate.

In one embodiment, a plurality of upper forming dies are arranged, and each upper forming die is arranged on the upper die fixing plate.

In one embodiment, the molding assembly further includes a lower mold fixing plate and lower mold positioning pins, each lower mold positioning pin is disposed on the lower mold fixing plate, and the molding lower mold is disposed on the lower mold fixing plate.

In one embodiment, a plurality of lower molding dies are arranged, and each lower molding die is arranged on the lower die fixing plate.

In one embodiment, a positioning groove is formed on one side of the upper die fixing plate facing the lower die fixing plate.

In one embodiment, a positioning boss is disposed on a side of the lower mold fixing plate facing the upper mold fixing plate, and the positioning boss is received in the positioning groove when the upper mold fixing plate is fastened to the lower mold fixing plate.

In one embodiment, the forming sand core is provided with a plurality of air holes.

In one embodiment, the casting assembly further comprises a first upper mold riser connected with the first ingate and a second upper mold riser connected with the second ingate.

In one embodiment, the pouring assembly further comprises a sprue cup, a sprue and a cross runner, the sprue cup is connected with the sprue, the cross runner is connected with the sprue, and the first and second upper mold risers are respectively connected with the cross runner.

Compared with the prior art, the utility model discloses at least, following advantage has:

the utility model discloses a motor car air conditioner spare part sand mold casting mould is through setting up the shaping subassembly and pouring the subassembly, thereby can constitute the shaping chamber of casing jointly with lower mould one-tenth die cavity through last die cavity, carry out the shaping operation through the helicla flute of shaping psammitolite on to motor car air conditioner spare part, through setting up first inner gate and second inner gate in motor car air conditioner spare part both sides thick wall department, thereby can make the molten metal fill up the shaping chamber from the both sides in shaping chamber fast evenly, and then avoid middle helicla flute thin wall department directly to receive the impact of molten metal and be damaged, and both sides are filled simultaneously, can make the molten metal fill more abundant, in time carry out the feeding, thereby avoid the regional manufacturing defects such as shrinkage cavity and shrinkage porosity of appearing in the helicla flute, and then improve the production quality of product.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below.

FIG. 1 is a schematic view of a motor vehicle air conditioning unit 20;

fig. 2 is a schematic structural view of a sand mold casting mold for a bullet train air conditioner component in an embodiment of the present invention;

FIG. 3 is a schematic structural view of another perspective of a sand casting mold for the bullet train air conditioner component in FIG. 2;

FIG. 4 is a schematic structural view of a blank with a pouring assembly;

fig. 5 is a schematic structural view of a sand core of a sand casting mold for a bullet train air conditioner component according to an embodiment of the present invention;

fig. 6 is a schematic view of another perspective of the sand core of the bullet air conditioner part sand casting mold of fig. 5.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Referring to fig. 1, 2, 3, 4, 5 and 6, a sand mold casting mold 10 for automotive air conditioning parts comprises: the forming assembly 100 and the pouring assembly 200, the forming assembly 100 comprises an upper forming die 110, a lower forming die 120 and a forming sand core 130, the outer surface of the upper forming die 110 forms an upper die forming cavity, the outer surface of the lower forming die 120 forms a lower die forming cavity, the upper die forming cavity and the lower die forming cavity together form a forming cavity of the shell 21, the forming sand core 130 is arranged between the upper die forming cavity and the lower die forming cavity, and the forming sand core 130 is used for forming the spiral groove 22; the pouring assembly 200 includes a first in-gate 210 and a second in-gate 220, the first in-gate 210 and the second in-gate 220 are respectively disposed on two sides of the upper mold 120, and the first in-gate 210 and the second in-gate 220 are disposed opposite to each other.

It should be noted that the sand casting production process generally includes a sand mixing stage, a molding stage, a modeling stage, a smelting stage, a pouring stage, and the like; the sand mixing stage is to prepare molding sand and core sand for molding; the molding stage is to make a mold according to a part drawing, in this embodiment, according to the structure of the bullet train air-conditioning part 20, an upper molding mold 110, a lower molding mold 120 and a molding sand core 130 in the bullet train air-conditioning part sand mold casting mold 10 are respectively made, and according to the appearance structure of the bullet train air-conditioning part 20, a pouring assembly 200 capable of ensuring the production quality of a product and avoiding casting defects such as shrinkage cavity, shrinkage porosity and the like is designed and manufactured; then, a molding stage is carried out, wherein the molding stage comprises manufacturing a molding cavity of the motor car air-conditioning part 20 and manufacturing a molding sand core 130 for forming the internal shape of the motor car air-conditioning part 20, and manufacturing a casting channel of the casting assembly 200 by using molding sand according to a pattern of the casting assembly 200, specifically, in the molding stage, the molding sand is required to wrap the upper molding die 110 and the lower molding die 120, the molding cavity of the shell 21 is formed according to the external surface shape of the upper molding die 110 and the external surface shape of the lower molding die 120, then the upper molding die 110 and the lower molding die 120 are taken out, and finally the manufactured molding sand core 130 is placed into the molding cavity, namely, the molding sand core is placed between the upper molding cavity and the lower molding cavity, so that the integral structure of the motor car air-conditioning part 20 is formed; a smelting stage and a pouring stage, namely, molten metal is injected into the pouring assembly 200, flows into the first inner gate 210 and the second inner gate 220 through the pouring assembly 200, finally flows into the molding cavity, a blank with the pouring assembly 200 is obtained after the molten metal is solidified, and a finished product of the motor train air conditioner part 20 is obtained after the pouring assembly 200 is removed;

further, first ingate 210 and second ingate 220 set up respectively in the both sides of mould 120 in the shaping, set up in the thick wall region of motor car air conditioner spare part 20 promptly, and first ingate 210 sets up with second ingate 220 relatively, so, can make the molten metal fill the shaping chamber from the both sides in shaping chamber fast evenly, and then avoid middle helicla flute thin wall department directly to receive the impact of molten metal and damaged, and both sides are filled simultaneously, can make the molten metal fill more fully, in time carry out the feeding, thereby avoid the helicla flute region to appear manufacturing defects such as shrinkage cavity and shrinkage porosity, and then improve the production quality of product. Wherein, the cross sectional dimension of first ingate 210 and the cross sectional dimension of second ingate 220 are all 40X5mm, and are flat structures, and first ingate 210 and second ingate 220 are thinner, so, can play the effect of pushing off the slag, and then guarantee product quality.

In one embodiment, the forming assembly 100 further includes an upper fixing plate 140 and a plurality of upper positioning pins 150, wherein each upper positioning pin 150 is disposed on the upper fixing plate 140, and the forming upper mold 110 is disposed on the upper fixing plate 140.

It should be noted that four upper die positioning pins 150 are provided, and the four upper die positioning pins 150 are respectively disposed in four corner regions of the upper die positioning plate 140, so that the upper die positioning pins 150 can assist in smooth die shifting, and meanwhile, the upper die and the lower die are prevented from being dislocated. In this embodiment, the upper forming dies 110 are provided in a plurality, and each upper forming die 110 is respectively arranged on the upper die fixing plate 140, specifically, the upper forming dies 110 are provided in four, and the four upper forming dies 110 are arranged in two pairs in alignment, so that the production efficiency can be improved.

Further, the molding assembly 100 further includes a lower mold fixing plate 160 and lower mold positioning pins 170, each of which is disposed on the lower mold fixing plate 160, and the lower molding die 120 is disposed on the lower mold fixing plate 160.

It should be noted that, like the upper mold positioning pin 150, four lower mold positioning pins 170 are provided, and the four lower mold positioning pins 170 are respectively provided in four corner regions of the lower mold fixing plate 160, so that the mold shifting is facilitated by the lower mold positioning pins 170, and the dislocation of the upper mold and the lower mold is prevented. Corresponding to the upper forming die 110, in the present embodiment, four lower forming dies 120 are also provided, and the four lower forming dies 120 are respectively aligned with the four upper forming dies 110 one by one, so that the production efficiency can be improved.

In one embodiment, the upper mold fixing plate 140 is provided with a positioning groove 141 on a side thereof facing the lower mold fixing plate 160.

It should be noted that, in this embodiment, a positioning boss 161 is disposed on one side of the lower mold fixing plate 160 facing the upper mold fixing plate 140, and when the upper mold fixing plate 140 is fastened to the lower mold fixing plate 160, the positioning boss 161 is accommodated in the positioning groove 141, so that the occurrence of dislocation when the upper mold forming cavity and the lower mold forming cavity are manufactured can be further avoided, accurate positioning is ensured, and the quality of the product is further ensured.

In one embodiment, the sand core 130 has a plurality of air holes 131.

It should be noted that, through the air holes 131, after the molten metal enters the forming cavity, the air in the forming cavity is discharged through the air holes 131, thereby avoiding the occurrence of manufacturing defects after the product is formed, and further ensuring the quality of the product.

In one embodiment, the casting assembly 200 further comprises a first upper mold riser 230 and a second upper mold riser 240, wherein the first upper mold riser 230 is connected to the first ingate 210, and the second upper mold riser 240 is connected to the second ingate 220.

It should be noted that, since the cross-sectional dimension of the first upper mold riser 230 is greater than the cross-sectional dimension of the first ingate 210, and similarly, the cross-sectional dimension of the second upper mold riser 240 is greater than the cross-sectional dimension of the second ingate 220, before the molten metal flows into the molding cavity, the iron slag can enter the first upper mold riser 230 and the second upper mold riser 240 in advance, so that the iron slag can be prevented from entering the molding cavity, and the production quality of the product can be ensured.

Further, the casting assembly 200 further includes a sprue cup 250, a sprue 260, and a runner 270, wherein the sprue cup 250 is connected to the sprue 260, the runner 270 is connected to the sprue 260, and the first upper mold riser 230 and the second upper mold riser 240 are respectively connected to the runner 270.

It should be noted that the molten metal enters the sprue 260 through the sprue cup 250, and since the cross-sectional area of the sprue cup 250 is greater than that of the sprue 260, the molten metal can play a certain role of slag blocking and buffering through the sprue cup 250, so as to prevent the molten metal from directly flowing through the sprue 260, and then the molten metal is divided through the cross runner 270, and finally enters each molding cavity through the first upper mold riser 230 and the first ingate 210, and through the second upper mold riser 240 and the second ingate 220; and solidifying the final molten metal in the forming cavity to form a final finished product. Further, the pouring assembly 200 further comprises a first lower die riser 280 and a second lower die riser 290, after a forming cavity of the motor vehicle air-conditioning part 20 is formed through the forming assembly 100, the first lower die riser 280 is communicated with the first upper die riser 230, and the second lower die riser 290 is communicated with the second upper die riser 230, so that a large slag blocking cavity is formed, and impurities such as iron slag and the like mixed in molten metal can enter the slag blocking cavity formed by each riser due to the fact that the sectional area of each ingate is small, and therefore the forming quality of products can be further improved.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a motor car air conditioner spare part sand type casting mould which characterized in that includes:

the forming assembly comprises an upper forming die, a lower forming die and a forming sand core, wherein the outer surface of the upper forming die forms an upper die forming cavity, the outer surface of the lower forming die forms a lower die forming cavity, the upper die forming cavity and the lower die forming cavity jointly form a forming cavity of the shell, the forming sand core is arranged between the upper die forming cavity and the lower die forming cavity, and the forming sand core is used for forming the spiral groove;

the pouring assembly is connected with the forming assembly and comprises a first inner pouring gate and a second inner pouring gate, the first inner pouring gate and the second inner pouring gate are respectively arranged on two sides of the upper forming die, and the first inner pouring gate and the second inner pouring gate are oppositely arranged.

2. The sand casting mold for motor vehicle air conditioner components according to claim 1, wherein the molding assembly further comprises an upper mold fixing plate and a plurality of upper mold positioning pins, each upper mold positioning pin is disposed on the upper mold fixing plate, and the upper molding mold is disposed on the upper mold fixing plate.

3. The sand casting mold for bullet train air conditioner parts according to claim 2, wherein a plurality of upper molding dies are provided, and each upper molding die is provided on the upper die fixing plate.

4. The sand casting mold for bullet train air conditioner components according to claim 3, wherein said molding assembly further comprises a lower mold fixing plate and lower mold positioning pins, each of said lower mold positioning pins is disposed on said lower mold fixing plate, and said molding lower mold is disposed on said lower mold fixing plate.

5. The sand casting mold for bullet train air conditioner components according to claim 4, wherein a plurality of lower molding dies are provided, and each lower molding die is provided on the lower die fixing plate.

6. The sand casting mold for bullet train air conditioner parts according to claim 5, wherein a positioning groove is provided on a side of said upper mold fixing plate facing said lower mold fixing plate.

7. The sand casting mold for bullet train air conditioner components according to claim 6, wherein a positioning boss is provided on a side of the lower mold fixing plate facing the upper mold fixing plate, and the positioning boss is received in the positioning groove when the upper mold fixing plate is engaged with the lower mold fixing plate.

8. The sand casting mold for motor vehicle air conditioner components as claimed in claim 1, wherein the sand core has a plurality of ventilation holes.

9. The sand casting mold for bullet train air conditioner parts according to claim 1, wherein said casting assembly further comprises a first upper mold riser and a second upper mold riser, said first upper mold riser being connected to said first ingate, said second upper mold riser being connected to said second ingate.

10. The sand casting mold for motor vehicle air conditioner parts according to claim 9, wherein the casting assembly further comprises a sprue cup, a sprue and a runner, the sprue cup is connected with the sprue, the runner is connected with the sprue, and the first upper mold riser and the second upper mold riser are connected with the runner respectively.