CN211915436U

CN211915436U - High-precision arc magnesium alloy casting

Info

Publication number: CN211915436U
Application number: CN202020039429.2U
Authority: CN
Inventors: 张日昌; 周鹏
Original assignee: Shenzhen Huayemei Alloy Technology Co ltd
Current assignee: Shenzhen Huayemei Alloy Technology Co ltd
Priority date: 2020-01-09
Filing date: 2020-01-09
Publication date: 2020-11-13
Anticipated expiration: 2030-01-09

Abstract

The utility model discloses a high-precision arc magnesium alloy casting, which has high molding quality and convenient demoulding, and comprises a semi-circular casting main body, wherein one side of the casting main body is provided with an auxiliary molding ring which is coaxial with the casting main body, and the auxiliary molding ring is of a circular structure and is integrally molded with the casting main body; the two ends of the auxiliary forming ring are respectively and integrally formed with a pouring section and an auxiliary exhaust section; an auxiliary slag collecting bag is arranged at the bottom of the auxiliary exhaust section; the both ends of foundry goods main part all are equipped with first exhaust section, and the bottom of each first exhaust section all is equipped with first collection cinder ladle.

Description

High-precision arc magnesium alloy casting

Technical Field

The utility model relates to a mould especially relates to a convex magnesium alloy casting of high accuracy.

Background

In the casting process of magnesium alloy products, in order to avoid the impact of injected molten metal and influence on the product molding quality, a gate is usually arranged at the edge of the product, and molten metal is injected into a cavity of a mold through the gate.

Because the cooling solidification speed of the magnesium alloy is very high, the time and the state of the molten magnesium alloy flowing from the sprue to each part of the cavity are different, and particularly for arc castings with high requirements on the surface precision of products, more over consideration and improvement are needed in the production and the structure of the products due to the larger fall and the larger thickness, so that the final forming quality is ensured.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, one of the purposes of the utility model is to provide a high-precision arc magnesium alloy casting, which has high forming quality and convenient demoulding.

The utility model discloses an one of the purpose adopts following technical scheme to realize: a high-precision arc magnesium alloy casting comprises a semicircular casting main body, wherein one side of the casting main body is provided with an auxiliary forming ring which is coaxial with the casting main body, and the auxiliary forming ring is of a circular structure and is integrally formed with the casting main body;

the two ends of the auxiliary forming ring are respectively and integrally formed with a pouring section and an auxiliary exhaust section; an auxiliary slag collecting bag is arranged at the bottom of the auxiliary exhaust section;

the both ends of foundry goods main part all are equipped with first exhaust section, and the bottom of each first exhaust section all is equipped with first collection cinder ladle.

Furthermore, one side of the casting main body, which is far away from the auxiliary forming ring, is provided with a second exhaust section and a second slag collecting ladle positioned at the top of the second exhaust section, and the second exhaust section is positioned in the middle of the casting main body.

Furthermore, one end of the first exhaust section and one end of the second exhaust section, which are far away from the casting main body, are provided with wavy exhaust sheets.

Further, the pouring section comprises an upper pouring rod and a lower pouring rod which are integrally formed in sequence, and the upper pouring rod is perpendicular to the lower pouring rod;

and the lower casting rod is of an arc-shaped structure which is bent upwards.

Furthermore, the thickness of the auxiliary forming ring is one half of the thickness of the casting main body, and the inner diameter of the auxiliary forming ring is equal to that of the casting main body;

and the joint of the auxiliary forming ring and the lower pouring rod is provided with a thickening block which is positioned at the inner side of the auxiliary forming ring.

Furthermore, each first exhaust section is connected with the end part of the casting main body, and the second exhaust section is connected with the side surface of the casting main body.

Compared with the prior art, the beneficial effects of the utility model reside in that:

1. through analyzing the structure of a specific product, the pouring gate position is reasonably designed, so that the molten liquid flows to each position of a die cavity at a relatively uniform speed and state to produce a casting, the product is prevented from being impacted by injected materials in the pouring process, the phenomena of cold lines, cracks, slag inclusion, uneven density and the like generated at each part in the machining process are reduced, and the yield of the product is improved.

2. The design of the exhaust groove and the slag collection bag is beneficial to eliminating the defects of air holes, cold shut, slag inclusion and the like of the casting, and the product is prevented from deforming during demoulding;

meanwhile, the product cooling agent can be used for shrinkage supplement and backfill of the product in the product cooling process;

3. the structures in the die are matched, the die is compact and reliable, the yield is high, and the die does not contact with the ejector pins when a product is demoulded, so that the surface precision of the product is ensured.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

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

fig. 2 is a partial schematic view of the present embodiment.

In the figure: 1. a casting body; 2. an auxiliary forming ring; 21. thickening blocks; 22. an auxiliary exhaust section; 23. an auxiliary slag collecting bag; 31. a first exhaust section; 32. a first slag collecting bag; 33. a second exhaust section; 34. a second slag collecting bag; 35. wave exhaust fins; 41. an upper pouring rod; 42. and (5) lower pouring rods.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 2, a high-precision circular arc magnesium alloy casting includes a semi-circular casting main body 1, in order to avoid impact and damage to the casting main body 1 caused by high-pressure molten liquid during the casting process, especially, the magnesium alloy is cooled and solidified faster, therefore, in this embodiment, an auxiliary forming ring 2 coaxial with the casting main body 1 is disposed on one side of the casting main body 1, a casting section and an auxiliary exhaust section 22 are respectively integrally formed at two ends of the auxiliary forming ring 2, and the casting main body 1 is prevented from directly facing and connecting the casting section by using the auxiliary forming ring 2 to connect with the casting section; be the ring form structure with the design of supplementary shaping ring 2 and with foundry goods main part 1 integrated into one piece, convenient excision after the drawing of patterns, and the side of supplementary shaping ring 2 is big with foundry goods main part 1's area of contact, under the unchangeable circumstances of melt pressure, can reduce the impact to foundry goods main part 1 through the reposition of redundant personnel, simultaneously, the bottom of supplementary exhaust section 22 is equipped with supplementary collection cinder ladle 23.

Both ends of casting main body 1 all are equipped with first exhaust section 31, and the bottom of each first exhaust section 31 all is equipped with first collection cinder ladle 32. One side of the casting main body 1, which is far away from the auxiliary forming ring 2, is provided with a second exhaust section 33 and second slag collecting bags 34 (for balancing stress, the number of the second slag collecting bags 34 in this embodiment is 2), which are located at the top of the second exhaust section 33, and the second exhaust section 33 is located in the middle of the casting main body 1. Each first exhaust section 31 is connected to an end of the casting body 1, and the second exhaust section 33 is connected to a side of the casting body 1.

By adopting the design, the casting main body 1 can be replaced by the slag collecting bags to be in contact with the ejector pins of the mold, and the ejector pins of the mold can jack the slag collecting bags from the bottoms of the slag collecting bags during demolding, so that demolding is realized, and the molding quality of the casting main body 1 is ensured. Therefore, the design position of each slag collecting ladle is close to the casting main body 1 or the auxiliary forming ring 2, and the strength is high.

And because the both sides of casting main part 1 are the plane, also the junction with the first exhaust section 31 is the plane, therefore, such design, facilitate in casting main part 1 subsequent processing with the auxiliary forming ring 2, each exhaust section excision, the auxiliary forming ring 2 is long with the connection distance of casting main part 1, but the thickness is only half of casting main part 1, the internal diameter of the auxiliary forming ring 2 is equal to internal diameter of casting main part 1, therefore the excision degree of difficulty is low, can make the solution reach every position of casting main part 1 with the fastest speed in the pouring process, avoid condensing in advance.

Because the required precision of casting main part 1 is high, the drop is big with thickness, the pressure of required solution is high, therefore, this embodiment is equipped with wavy exhaust piece in the one end that casting main part 1 was kept away from to first exhaust section 31 and second exhaust section 33, the both ends of wavy exhaust piece are equipped with a plurality of archs in proper order, such design can be in the pouring process, utilize the structure of this department unevenness, reduce the impact of gaseous in the mould chamber, protect staff on one side, simultaneously, wavy exhaust piece also can be through the thimble cooperation with the mould, help casting main part 1 drawing of patterns.

The pouring section is including pouring pole 41, the lower pouring pole 42 of pouring in proper order integrated into one piece's last pouring pole 41, it is perpendicular with lower pouring pole 42, and the melt can be reduced velocity of flow and impact force by force when pouring pole 41, the lower pouring pole 42 junction through last pouring, and the lower pouring pole 42 is the arc structure of bending up, avoids the melt to directly strike supplementary shaping chamber, plays the effect of buffering.

The joint of the auxiliary forming ring 2 and the lower casting rod 42 is provided with a thickening block 21, and the thickening block 21 is positioned on the inner side of the auxiliary forming ring 2. According to the design, in the pouring process of the casting main body 1, on one hand, the buffering effect can be achieved, molten liquid can flow back to the casting main body 1 through the thickening block 21, and on the other hand, the width of the casting main body 1 is gradually reduced to the end portion of the casting main body, the connection area between the casting main body 1 and the thickening block 21 is increased through the design, so that the stress of the casting main body 1 is balanced during demoulding, and the phenomenon that the casting main body 1 is scratched due to unbalanced stress in the demoulding process is avoided.

In the production process of this embodiment, other parts are similar to conventional moulds, and the movable mould and the fixed mould are controlled to be closed through equipment, so that the core insert and the cavity insert are closed, and meanwhile, the cavity is internally provided with the movable mould to fill the hollow part of this embodiment. And then, the molten liquid enters the cavity through the pouring gate for pouring, after solidification, the equipment controls the movable mold to open the cavity, then the inclined rod and the connecting piece can be pulled out manually or through a mechanical arm, the positioning block, the forming block and the forming mold are dismounted, finally, the thimble bottom plate is driven to move towards the direction of the fixed mold, and the product is jacked up through the thimble to complete demolding.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. The utility model provides a convex magnesium alloy casting of high accuracy, is including being the annular foundry goods main part of semicircle, its characterized in that: an auxiliary forming ring coaxial with the casting main body is arranged on one side of the casting main body, is of a circular ring-shaped structure and is integrally formed with the casting main body;

2. The high-precision circular arc magnesium alloy casting according to claim 1, which is characterized in that: one side of the casting main body, which is far away from the auxiliary forming ring, is provided with a second exhaust section and a second slag collecting bag positioned at the top of the second exhaust section, and the second exhaust section is positioned in the middle of the casting main body.

3. The high-precision circular arc magnesium alloy casting according to claim 2, which is characterized in that: and one ends of the first exhaust section and the second exhaust section, which are far away from the casting main body, are provided with wavy exhaust sheets.

4. The high-precision circular arc magnesium alloy casting according to claim 1, 2 or 3, characterized in that: the pouring section comprises an upper pouring rod and a lower pouring rod which are integrally formed in sequence, and the upper pouring rod is perpendicular to the lower pouring rod;

and the lower casting rod is of an arc-shaped structure which is bent upwards.

5. The high-precision circular arc magnesium alloy casting according to claim 4, which is characterized in that: the thickness of the auxiliary forming ring is one half of the thickness of the casting main body, and the inner diameter of the auxiliary forming ring is equal to that of the casting main body;

6. The high-precision circular arc magnesium alloy casting according to claim 5, which is characterized in that: each first exhaust section is connected with the end of the casting main body, and the second exhaust section is connected with the side face of the casting main body.