High quality injection molded structure based on efficient deep hole venting

Abstract

The application is based on the high-quality casting forming structure with high-efficiency deep-hole exhaust, comprising a lower mold, wherein a lower mold cavity is arranged on the lower mold, the lower mold cavity comprises a circular main body and a long-side wing, and the circular main body and the long-side wing are correspondingly provided with a circular lower cavity and a long-side wing lower cavity; the bottom of the circular lower cavity and the long-side wing lower cavity is respectively provided with a reserved extension cavity A and a reserved extension cavity B, the reserved extension cavity A and the reserved extension cavity B are used as the excess extension area connected to the product cavity, and are respectively provided with downward exhaust structure A and downward exhaust structure B, thereby forming the high-quality circular main body and long-side wing forming structure.

Description

TECHNICAL FIELD

[0001] The present application relates to precision manufacturing technology, in particular to casting forming technology, and more particularly to a high-quality casting forming structure based on efficient deep-hole exhaust. BACKGROUND

[0002] In the field of casting forming technology, molten metal liquid in a molten state or semi-solid fluid state is poured into a forming mold cavity, and after cooling, the desired product is obtained. However, in some products, the deep and long annular body and the long side wing correspond to a deep and long groove-shaped forming mold cavity in the injection molding mold, which cannot be well exhausted, and thus the quality of the deep and long annular body and the long side wing at the end of the forming is poor.

[0003] Therefore, it is necessary to provide a high-quality casting forming structure wing based on efficient deep-hole exhaust to solve the above problems. SUMMARY

[0004] The purpose of the present application is to provide a high-quality casting forming structure based on efficient deep-hole exhaust.

[0005] The technical scheme is as follows:

[0006] A high-quality casting forming structure based on efficient deep-hole exhaust, comprising a lower mold, a lower mold cavity is arranged on the lower mold, the lower mold cavity comprises an annular lower cavity and a long side wing lower cavity corresponding to a deep and long annular body and a long side wing;

[0007] The bottom of the annular lower cavity and the long side wing lower cavity is respectively provided with a reserved extension cavity A and a reserved extension cavity B, the reserved extension cavity A and the reserved extension cavity B are used as a redundant extension area connected to the product cavity, and are respectively provided with a downward exhaust structure A and a downward exhaust structure B, forming a high-quality annular body and long side wing forming structure.

[0008] Further, the reserved extension cavity A and the reserved extension cavity B are both formed by the corresponding combination of the lower mold body A and the lower mold body B, the thermal expansion coefficient of the lower mold body A is greater than that of the lower mold body B, and during casting forming, the lower mold body A drives the lower mold body B, so that the bonding surface of the lower mold body A and the lower mold body B forms a slightly open gap with the reserved extension cavity A or the reserved extension cavity B, which is used as the downward exhaust structure A or the downward exhaust structure B, forming a thermal expansion deep downward exhaust structure.

[0009] Further, the reserved extension cavity A is a ring-shaped deep hole groove matched with the annular body.

[0010] Further, the depth of the reserved extension cavity A is 1 / 10-1 / 8 of the annular body.

[0011] Further, the width of the reserved extension cavity A is 1 / 5-1 / 4 of the annular body.

[0012] Further, the reserved extension cavity B is a square-shaped deep hole groove.

[0013] Further, the depth of the reserved extension cavity B is 1 / 6-1 / 4 of the long-side wing.

[0014] Further, the width of the reserved extension cavity B is 1 / 3-1 / 2 of the long-side wing.

[0015] Compared with the prior art, the present application is provided with the reserved extension cavity A and the reserved extension cavity B at the bottom of the annular sunken cavity and the long-side wing sunken cavity respectively, the reserved extension cavity A and the reserved extension cavity B are used as the excess extension area connected to the product cavity, and are respectively provided with the downward air exhaust structure A and the downward air exhaust structure B, thereby forming the high-quality annular main body and long-side wing forming structure. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 is a structural schematic diagram of the lower mold.

[0017] Fig. 2 is a schematic diagram of the product with the excess extension area after forming.

[0018] Fig. 3 is a sectional view of the lower mold.

[0019] Fig. 4 is a partial enlarged view of Fig. 3 .

[0020] Fig. 5 is a structural schematic diagram of the downward air exhaust structure A and the downward air exhaust structure B. DETAILED DESCRIPTION

[0021] Embodiment:

[0022] Please refer to Figs. 1-3 , the embodiment shows a high-quality pouring forming structure based on efficient deep hole air exhaust, comprising a lower mold, the lower mold is provided with a lower mold cavity, the lower mold cavity comprises an annular sunken cavity 100 and a long-side wing sunken cavity 200 corresponding to the deep and long annular main body and long-side wing;

[0023] The bottom of the annular sunken cavity 100 and the long-side wing sunken cavity 200 is respectively provided with a reserved extension cavity A1 and a reserved extension cavity B2, the reserved extension cavity A1 and the reserved extension cavity B2 are used as the excess extension area connected to the product cavity, and are respectively provided with the downward air exhaust structure A and the downward air exhaust structure B, thereby forming the high-quality annular main body and long-side wing forming structure.

[0024] The product 300 poured by the embodiment has the excess extension part A301 and the extension part B302 corresponding to the deep and long annular main body and long-side wing, effectively extending the area below the insufficient air exhaust to the extension part A301 and the extension part B302, and ensuring the forming quality of the product main body.

[0025] At the same time, the two bodies corresponding to the reserved extension cavity A1 and the reserved extension cavity B2 are set by the different factors of thermal expansion coefficient, such as:

[0026] The reserved extension cavity A1 and the reserved extension cavity B2 are formed by the corresponding combination of the lower die body A11 and the lower die body B12, the thermal expansion coefficient of the lower die body A11 is greater than that of the lower die body B12, and the lower die body A11 drives the lower die body B12 during pouring forming, so that the lower die body A12 and the lower die body B12 are in contact with the reserved extension cavity A1 or the reserved extension cavity B2 to form a micro-gap, which is used as a downward exhaust structure A or a downward exhaust structure B, and a thermal expansion deep downward exhaust structure 10 is formed.

[0027] Among them:

[0028] The reserved extension cavity A1 is a ring-shaped deep hole groove matched with the ring-shaped body.

[0029] The depth of the reserved extension cavity A1 is 1 / 10-1 / 8 of the ring-shaped body.

[0030] The width of the reserved extension cavity A1 is 1 / 5-1 / 4 of the ring-shaped body.

[0031] The reserved extension cavity B2 is a square-shaped deep hole groove.

[0032] The depth of the reserved extension cavity B2 is 1 / 6-1 / 4 of the long side wing.

[0033] The width of the reserved extension cavity B2 is 1 / 3-1 / 2 of the long side wing.

[0034] Compared with the prior art, the present application is provided with the reserved extension cavity A and the reserved extension cavity B at the bottom of the ring-shaped sunken cavity and the long side wing sunken cavity respectively, the reserved extension cavity A and the reserved extension cavity B are used as the excess extension area connected to the product cavity, and the downward exhaust structure A and the downward exhaust structure B are respectively provided, thereby forming a high-quality ring-shaped body and a long side wing forming structure.

[0035] The above only describes some embodiments of the present application. Those skilled in the art can make several modifications and improvements without departing from the inventive concept, and these all belong to the protection scope of the present application.

Claims

1. A high-quality castable structure based on efficient deep-hole venting, characterized in that: The lower mold is provided with a lower mold cavity, and the lower mold cavity includes a circular lower cavity corresponding to a long and deep circular body and a long side wing and a long side wing lower cavity; The bottom of the circular lower cavity and the long side wing lower cavity is respectively provided with a reserved extension cavity A and a reserved extension cavity B, which are used as excess extension areas connected to the product cavity, and are respectively provided with downward exhaust structures A and B, forming a high-quality circular body and long side wing forming structure; The reserved extension cavity A and the reserved extension cavity B are both formed by the combination of the corresponding lower mold body A and the lower mold body B, the thermal expansion coefficient of the lower mold body A is greater than that of the lower mold body B, and during casting, the lower mold body A drives the lower mold body B, so that the contact surface of the lower mold body A and the lower mold body B forms a micro-open gap with the reserved extension cavity A or the reserved extension cavity B, which is used as the downward exhaust structure A or the downward exhaust structure B, forming a heat expansion deep downward exhaust structure.

2. A high quality cast structure based on efficient deep hole venting as claimed in claim 1, wherein: The reserved extension cavity A is a circular deep hole groove matching the circular body.

3. A high quality cast structure based on efficient deep hole venting according to claim 1 or 2, characterized in that: The depth of the reserved extension cavity A is 1 / 10-1 / 8 of the circular body.

4. A high quality cast structure based on efficient deep hole venting according to claim 1 or 2, characterized in that: The width of the reserved extension cavity A is 1 / 5-1 / 4 of the circular body.

5. A high quality cast structure based on efficient deep hole venting according to claim 1 or 2, characterized in that: The reserved extension cavity B is a square deep hole groove.

6. A high quality cast structure based on efficient deep hole venting according to claim 1 or 2, characterized in that: The depth of the reserved extension cavity B is 1 / 6-1 / 4 of the long side wing.

7. A high quality cast structure based on efficient deep hole venting according to claim 1 or 2, characterized in that: The width of the reserved extension cavity B is 1 / 3-1 / 2 of the long side wing.

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