CN-115255269-B - 3D printing sand mold of combustion exhaust shell of supercharger and molding method

CN115255269BCN 115255269 BCN115255269 BCN 115255269BCN-115255269-B

Abstract

The invention relates to the technical field of sand casting, in particular to a 3D printing sand mould and a molding method of a supercharger fuel exhaust shell, wherein the 3D printing sand mould of the supercharger fuel exhaust shell comprises a lower box sand mould, a lower box runner sand core, a lower box inner gate sand core, a middle box sand mould, a middle box water cavity sand core, a middle box air channel sand core, an upper box sand mould, an upper box reinforcing rib, four first air outlet pieces and three second air outlet pieces, the supercharger fuel exhaust shell is prepared by casting through the upper box sand mould, the middle box sand mould and the lower box sand mould, the middle box sand mould and the upper box sand mould are all 3D printing sand moulds, the mold assembling is convenient and quick, the original scattered parts assembled through the integration design is carried out, the development period is shortened, the dimensional accuracy and the appearance quality of castings are improved, the development cost is low, the rapidness of the production of the supercharger fuel exhaust shell is improved, and the production efficiency of the supercharger fuel exhaust shell is improved.

Inventors

LIAO HONG
LIAO YUHAO
XIONG YANFENG
Liu maoyuan
SHAO TAO

Assignees

重庆江增船舶重工有限公司

Dates

Publication Date: 20260508
Application Date: 20220806

Claims (6)

1. A3D printing sand mold of a combustion exhaust shell of a supercharger is characterized in that, The sand mold comprises a lower box sand mold, a lower box runner sand core, a lower box inner pouring gate sand core, a middle box sand mold, a middle box water cavity sand core, a middle box air passage sand core, an upper box sand mold, an upper box reinforcing rib, four first air outlet pieces and three second air outlet pieces; The lower box runner sand core and the lower box inner gate sand core are respectively arranged in the lower box sand mold, the middle box sand mold is arranged above the lower box sand mold, the middle box water cavity sand core and the middle box air channel sand core are respectively arranged in the middle box sand mold, the upper box sand mold is arranged above the middle box sand mold, the upper box reinforcing ribs and the upper box sand mold are fixedly connected and are arranged above the upper box sand mold, four first air outlet pieces are respectively and fixedly connected with the upper box reinforcing ribs and penetrate through the upper box reinforcing ribs, three second air outlet pieces are respectively and fixedly connected and communicated with the upper box sand mold and are respectively arranged in the upper box sand mold, the 3D printing sand mold of the booster fuel cell shell further comprises two lower box lifting lugs, two middle box lifting lugs and two upper box sand molds, two lower box lifting lugs are respectively and fixedly connected with the lower box sand mold and are arranged on two sides of the lower box sand mold, two lifting lugs are respectively and fixedly connected with the two upper box sand molds and are respectively arranged on two sides of the upper box sand mold and fixedly connected with the two lifting lugs; The upper box sand mould is provided with an upper box sand reduction hole, an upper box straight pouring gate, an upper box guide hole, a casting cavity, three blind risers, three air outlet holes, three first overflow grooves and three second overflow grooves; the upper box sprue and the upper box guide hole penetrate through the upper box sand mold respectively, the casting cavity is positioned at the bottom of the upper box sand mold, the three blind risers are respectively communicated with the casting cavity and positioned at one side of the casting cavity, the three air outlet holes are respectively communicated with the three blind risers and are respectively positioned at the tops of the three blind risers, the three first overflow grooves are respectively communicated with the three air outlet holes and are respectively positioned at the tops of the three air outlet holes, and the three second overflow grooves are respectively communicated with the three second air outlet pieces and are respectively positioned at the tops of the three second air outlet pieces; The middle box sand mold is provided with a middle box sprue, and the middle box sprue is communicated with the upper box sprue and penetrates through the middle box sand mold; The lower box sand mold is provided with two inner gates, two lower runners, a filter screen runner, a filter screen groove, a first upper runner, a slag collecting groove, a second upper runner, a lower box sand reducing hole and a lower box sprue; the two inner pouring gates are respectively communicated with the casting cavity and are positioned at two sides of the lower box sand mold, the two lower cross runners are respectively communicated with the two inner pouring gates and are respectively positioned at one side of the two inner pouring gates, the filter screen cross runners are respectively communicated with the two lower cross runners and are positioned between the two lower cross runners, the filter screen groove is positioned at the top of the filter screen cross runner, the first upper cross runner is positioned at the top of the filter screen groove, the slag collecting groove is communicated with the first upper cross runner and is positioned at one side of the first upper cross runner, the second upper cross runner is communicated with one side of the first upper cross runner which is far away from the slag collecting groove, the lower box sand reducing hole is positioned at the bottom of the lower box sand mold, and the lower box straight runner is respectively communicated with the middle box straight runner and the second upper cross runner; the 3D printing sand mould of the supercharger combustion exhaust shell further comprises sand core reinforcing ribs, wherein the sand core reinforcing ribs are fixedly connected with the middle box air passage sand core and are positioned in the middle box air passage sand core.
2. A3D printed sand mold for a booster fuel cell casing as defined in claim 1, The upper box sand mold is also provided with an upper box conformal positioning spigot, and the upper box conformal positioning spigot is positioned at one side of the upper box sand mold, which is close to the middle box sand mold.
3. A3D printed sand mold for a booster fuel drain case as defined in claim 2, wherein, The middle box sand mold is provided with a middle box conformal positioning spigot, and the middle box conformal positioning spigot is positioned at one side of the middle box sand mold, which is close to the lower box sand mold.
4. A3D printed sand mold for a booster fuel cell casing as defined in claim 3, The middle box air flue sand core is provided with a middle box sand reduction hole and a convex core head; The middle box sand reduction hole is positioned in the middle box air passage sand core, and the raised core head is positioned on one side of the middle box air passage sand core, which is close to the upper box sand mold.
5. A3D printed sand mold for a booster fuel cell casing as defined in claim 4, The lower box runner sand core is provided with an L-shaped sand reducing hole, and the L-shaped sand reducing hole is positioned at the top of the filter screen groove.
6. A 3D printing sand mould molding method for a combustion exhaust shell of a supercharger, which adopts the 3D printing sand mould of the combustion exhaust shell of the supercharger according to any one of claims 1-5, and is characterized by comprising the following steps: designing a lower box sand mold, a middle box sand mold, an upper box sand mold, a lower box runner sand core and a lower box in-gate sand core three-dimensional model according to a booster combustion shell casting diagram; and converting the three-dimensional model format into an STL3D printing format, and then performing 3D printing to finish modeling.

Description

3D printing sand mold of combustion exhaust shell of supercharger and molding method Technical Field The invention relates to the technical field of sand casting, in particular to a 3D printing sand mold of a combustion exhaust shell of a supercharger and a molding method. Background At present, in the production of the combustion and exhaust shell of the supercharger, a wood die or a metal die is manufactured, raw materials are poured into the wood die or the metal die, and after the raw materials are self-hardened and formed, a corresponding sand mold is obtained, but in the production process of the combustion and exhaust shell of the supercharger by the existing wood die or the metal die, products with various types and specifications need to correspond to a set of dies, the die structure needs to be considered, namely, the draft angle, the movable block, blanking, blank making, processing, assembling and polishing, the manufacturing period is long, and the production rapidity of the combustion and exhaust shell of the supercharger is poor, so that the production efficiency of the combustion and exhaust shell of the supercharger is influenced. Disclosure of Invention The invention aims to provide a 3D printing sand mould and a modeling method for a combustion exhaust shell of a supercharger, which are used for carrying out integrated design on assembled components, wherein the sand mould is printed by 3D printing, so that the production rapidness of the combustion exhaust shell of the supercharger can be improved. In order to achieve the above purpose, in a first aspect, the invention provides a 3D printing sand mold of a combustion exhaust shell of a supercharger, which comprises a lower box sand mold, a lower box runner sand core, a lower box in-gate sand core, a middle box sand mold, a middle box water cavity sand core, a middle box air channel sand core, an upper box sand mold, an upper box reinforcing rib, four first air outlet pieces and three second air outlet pieces; The lower box runner sand core and the lower box inner gate sand core are respectively arranged in the lower box sand mold, the middle box sand mold is arranged above the lower box sand mold, the middle box water cavity sand core and the middle box air channel sand core are respectively arranged in the middle box sand mold, the upper box sand mold is arranged above the middle box sand mold, the upper box reinforcing ribs are fixedly connected with the upper box sand mold and are arranged above the upper box sand mold, four first air outlet pieces are respectively fixedly connected with the upper box reinforcing ribs and penetrate through the upper box reinforcing ribs, and three second air outlet pieces are respectively fixedly connected and communicated with the upper box sand mold and are respectively arranged in the upper box sand mold. The upper box sand mould is provided with an upper box sand reduction hole, an upper box straight pouring gate, an upper box guide hole, a casting cavity, three blind risers, three air outlet holes, three first overflow grooves and three second overflow grooves; The upper box sand reducing hole is formed in the top of the upper box sand mold, the upper box sprue and the upper box guide hole penetrate through the upper box sand mold respectively, the casting cavity is formed in the bottom of the upper box sand mold, the three blind risers are communicated with the casting cavity respectively and are located on one side of the casting cavity, the three air outlet holes are communicated with the three blind risers respectively and are located at the tops of the three blind risers respectively, the three first overflow grooves are communicated with the three air outlet holes respectively and are located at the tops of the three air outlet holes respectively, and the three second overflow grooves are communicated with the three second air outlet pieces respectively and are located at the tops of the three second air outlet pieces respectively. The middle box sand mold is provided with a middle box conformal positioning spigot and a middle box straight runner, wherein the middle box conformal positioning spigot is positioned on one side of the middle box sand mold, which is close to the lower box sand mold, and the middle box straight runner is communicated with the upper box straight runner and penetrates through the middle box sand mold. The middle box sand mold is provided with a middle box conformal positioning spigot, and the middle box conformal positioning spigot is positioned at one side of the middle box sand mold, which is close to the lower box sand mold. The middle box air passage sand core is provided with a middle box sand reduction hole and a convex core head; The middle box sand reduction hole is positioned in the middle box air passage sand core, and the raised core head is positioned on one side of the middle box air passage sand core, which is close to the upper box sand mold. The low