CN211588490U

CN211588490U - Die for producing magnesium alloy product

Info

Publication number: CN211588490U
Application number: CN202020039423.5U
Authority: CN
Inventors: 张日昌; 黄权彬
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: 2020-09-29
Anticipated expiration: 2030-01-09

Abstract

The utility model discloses a mould for producing magnesium alloy product, the shaping quality is high, the drawing of patterns is convenient, be equipped with down the shaping face on the public mould benevolence, be equipped with the shaping face on the cavity, be equipped with first shaping piece and second shaping piece in public mould benevolence and the cavity, first shaping mould all passes public mould benevolence and cavity benevolence with the second shaping mould, and the butt, first shaping mould and second shaping mould all are located between last shaping face and the lower shaping face, and have the clearance between last shaping face and the lower shaping face, the both sides of first shaping mould, and the both sides of second shaping mould all have the clearance with between public mould benevolence and the cavity, the surface of first shaping mould and second shaping mould surface, the lateral wall of public mould benevolence, lower shaping face, the lateral wall of upper shaping face and cavity benevolence constitutes the rectangle die cavity; the sprue is located on one side of the first molding die, and an exhaust structure is arranged on one side, away from the sprue, of the first molding die.

Description

Die for producing magnesium alloy product

Technical Field

The utility model relates to a mould especially relates to a mould for producing magnesium alloy product.

Background

In the field of casting processing, because the cooling solidification speed of the magnesium alloy is very high, the time and the state of the magnesium alloy melt flowing from a sprue on a mold to each part of a workpiece are different, and therefore, if the mold is designed according to the conventional method, bad phenomena such as cold lines, cracks, slag inclusion, uneven density and the like are easily generated on each part of a product in the pouring process.

Therefore, the structure of the mold needs to be improved according to the characteristics of different product structures, particularly for castings with high requirements on the surface precision of the products or when the fall and the thickness are large.

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 mould for producing magnesium alloy products, which has high forming quality and convenient demoulding.

The utility model discloses an one of the purpose adopts following technical scheme to realize: a mould for producing magnesium alloy products comprises a base plate, an ejector pin panel, a pouring gate, a fixed mould, a movable mould, a male mould core and a female mould core, wherein a lower forming surface is arranged on the male mould core, an upper forming surface is arranged on the female mould core, a first forming block and a second forming block are arranged in the male mould core and the female mould core, the first forming block and the second forming block are arranged oppositely, one sides of the first forming block and the second forming block facing the male mould core are embedded in one side of the male mould core facing the female mould core, and one sides of the first forming block and the second forming block facing the female mould core are embedded in one side of the female mould core facing the male mould core;

a first molding die is arranged at one end, facing the second molding block, of the first molding block, a second molding die abutted against the first molding die is arranged at one end, facing the first molding block, of the second molding block, the first molding die and the second molding die penetrate through the male die core and the female die core and are abutted against each other, the first molding die and the second molding die are located between the upper molding surface and the lower molding surface and have gaps with the upper molding surface and the lower molding surface, gaps are formed between the two sides of the first molding die and between the two sides of the second molding die and the male die core and the female die core, and a rectangular cavity is formed by the surface of the first molding die and the surface of the second molding die, the side wall of the male die core, the lower molding surface, the upper molding surface and the side wall of the female die core;

the sprue is located on one side of the first molding die, and an exhaust structure is arranged on one side, away from the sprue, of the first molding die.

Furthermore, a first positioning block is arranged on one side, back to the second forming block, of the first forming block, a second positioning block is arranged on one side, back to the first forming block, of the second positioning block, and the first positioning block and the second positioning block are fixedly connected with the fixed die.

Further, a melt flow channel is arranged between the sprue and the cavity, and comprises an upper flow channel which is concave towards the fixed die and is of an arc structure, and a first lower flow channel and a second lower flow channel which are communicated with the upper flow channel;

the first lower runner and the second lower runner are both communicated with the cavity, and a gap is formed between the first lower runner and the second lower runner.

Further, the first lower flow passage comprises a first extension section in an arc structure, and the second lower flow passage comprises a second extension section in an arc structure;

the first extension section and the second extension section are respectively positioned on one sides of the first lower flow passage and the second lower flow passage far away from the cavity.

Furthermore, the exhaust structure comprises a first exhaust groove and a second exhaust groove which are communicated with the cavity, and the first exhaust groove and the second exhaust groove are both provided with surfaces for the male die core;

and one end of the first exhaust groove and one end of the second exhaust groove, which are back to the cavity, are respectively provided with a first slag collecting bag and a second slag collecting bag, and the first slag collecting bag and the second slag collecting bag are respectively positioned on one surface of the male mold core, which faces the female mold core, and one surface of the female mold core, which faces the male mold core.

Furthermore, the bottoms of the first slag collecting bag, the second slag collecting bag, the first lower runner, the second lower runner, the first extension section and the second extension section are all provided with ejector pins.

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 the cavity at a relatively uniform speed and state, and the product is prevented from being impacted by injected materials in the pouring process, thereby reducing the phenomena of cold lines, cracks, slag inclusion, uneven density and the like generated at each part in the processing process and improving the yield of the product.

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;

FIG. 3 is a partial schematic view of the present embodiment 1;

FIG. 4 is an enlarged view taken at A in FIG. 3;

FIG. 5 is a partial schematic view of the present embodiment 2;

FIG. 6 is a schematic structural view of the core insert according to the present embodiment;

FIG. 7 is a schematic structural diagram of the cavity insert of the present embodiment;

fig. 8 is a schematic structural diagram of a finished product to be processed.

In the figure: 11. a base plate; 12. a thimble base plate; 13. a thimble panel; 15. a gate; 16. fixing a mold; 17. moving the mold; 18. a core insert; 181. a lower molding surface; 19. a cavity insert; 291. forming a molding surface; 31. a first molding block; 32. a first positioning block; 33. a first molding die; 41. a second molding block; 42. a second positioning block; 43. a second molding die; 51. a first exhaust groove; 52. a first slag collecting bag; 53. a second exhaust groove; 54. a second slag collecting bag; 61. an upper flow passage; 62. a first lower flow passage; 621. a first extension section; 63. a second lower runner; 631. a second extension.

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 8, a mold for producing a magnesium alloy product includes a bottom plate 11, an ejector bottom plate 12, an ejector panel 13, a gate 15, a fixed mold 16, a movable mold 17, a core insert 18 and a cavity insert 19, wherein the core insert 18 is provided with a lower molding surface 181, the cavity insert 19 is provided with an upper molding surface 291, the core insert 18 and the cavity insert 19 are provided with a first molding block 31 and a second molding block 41, the first molding block 31 and the second molding block 41 are disposed opposite to each other, one side of the first molding block 31 and one side of the second molding block 41 facing the core insert 18 are disposed on one side of the core insert 18 facing the cavity insert 19, and one side of the first molding block 31 and one side of the second molding block 41 facing the cavity insert 19 are disposed on one side of the cavity insert 19 facing the core insert 18.

The first molding block 31 is provided with a first molding die 33 at one end facing the second molding block 41, the second molding die 43 abutting against the first molding die 33 is provided at one end of the second molding block 41 facing the first molding block 31, the first molding die 33 and the second molding die 43 both penetrate through the male die core 18 and the female die core 19 and abut against the same, the first molding die 33 and the second molding die 43 are both positioned between the upper molding surface 291 and the lower molding surface 181 and have a gap with the upper molding surface 291 and the lower molding surface 181, both sides of the first molding die 33 and both sides of the second molding die 43 have a gap with the male die core 18 and the female die core 19, and the surface of the first molding die 33 and the surface of the second molding die 43, the side wall of the male die core 18, the lower molding surface 181, the upper molding surface 291 and the side wall of the female die core 19 form a rectangular cavity.

In this embodiment, the first molding die 33 and the second molding die 43 are both located between the core insert 18 and the cavity insert 19 and are respectively fixed to the first molding block 31 and the second molding block 41 or integrally molded, a first positioning block 32 is disposed on a side of the first molding block 31 facing away from the second molding block 41, a second positioning block 42 is disposed on a side of the second positioning block 42 facing away from the first molding block 31, and both the first positioning block 32 and the second positioning block 42 are fixedly connected to the fixed die 16. The two positioning blocks are all embedded in grooves in the fixed die 16, and then a connecting piece or a rod-shaped fastener is arranged to penetrate through the positioning blocks to be abutted against the molding blocks, so that the two molding blocks are kept fixed. Meanwhile, the cross sections of the two molding blocks are larger than the cross sections of the molding dies and are embedded in the grooves of the fixed die 16 and the movable die 17, and the opposite end surfaces of the two molding blocks are respectively abutted against the outer walls of the male die core 18 and the female die core 19. Two inclined rods are inserted into the first forming block 31 and the second forming block 41 to assist in fixing the first forming block 31 and the second forming block 41 and limit the degree of freedom thereof. The two opposite sides of the first forming block 31 and the second forming block 41 are both inclined surfaces, and are fastened and fixed with the corresponding positioning blocks.

In this embodiment, the gate 15 is located on one side of the first molding die 33, and the side of the first molding die 33 away from the gate 15 is provided with an exhaust structure. A melt flow channel is arranged between the sprue 15 and the cavity, and comprises an upper flow channel 61 which is concave towards the fixed die 16 and is of an arc structure, and a first lower flow channel 62 and a second lower flow channel 63 which are communicated with the upper flow channel 61. The design of runner 61 alleviates the impact of melt to the die cavity through the arc structure, and first runner 62 all communicates with the die cavity with second runner 63 down, and has gapped design between first runner 62 and the second runner 63 down, can further reduce the impact force that the melt got into the die cavity through dividing the melt on the one hand, and on the other hand can make the melt before the condensation, more evenly flow into the die cavity, reach each position in the die cavity fast. The sides of the first lower runner 62 and the second lower runner 63 close to the cavity are provided with upward slopes to reduce impact and damage of injected molten liquid to the structure in the cavity.

In addition, the exhaust structure in this embodiment includes a first exhaust groove 51 and a second exhaust groove 53 communicated with the cavity, and both the first exhaust groove 51 and the second exhaust groove 53 are provided with surfaces for the male mold core 18;

and the first exhaust groove 51 and the second exhaust groove 53 are respectively provided with a first slag collecting bag 52 and a second slag collecting bag 54 at the ends back to the cavity, and the first slag collecting bag 52 and the second slag collecting bag 54 are respectively arranged on one surface of the male mold core 18 facing the female mold core 19 and one surface of the female mold core 19 facing the male mold core 18.

In order to ensure the molding quality of the product, in this embodiment, no thimble is arranged below the cavity, and through the improvement of the structure, the first lower runner 62 includes a first extension 621 in an arc structure, and the second lower runner 63 includes a second extension 631 in an arc structure; the first extension 621 and the second extension 631 are respectively located at the sides of the first lower runner 62 and the second lower runner 63 far away from the cavity.

The first slag collecting bag 52, the second slag collecting bag 54, the first lower runner 62, the second lower runner 63, the first extending section 621 and the second extending section 631 make the thimble below the fixed mold 16 replace the product to be stressed when penetrating through the fixed mold 16 to jack up the product for demolding through the design of position and structure, so that the product is uniformly and stably supported, and demolding is completed.

In the production process of the embodiment, the rest parts are similar to the conventional mold, the movable mold 17 and the fixed mold 16 are controlled to be closed by the equipment, so that the male mold core 18 and the female mold core 19 are closed, the molten liquid enters the mold cavity through the sprue 15 for pouring, after solidification, the movable mold 17 is controlled by the equipment to open the mold cavity, then the inclined rod and the connecting piece can be pulled out manually or through a manipulator, the positioning block, the molding block and the molding mold are detached, finally, the thimble base plate 12 is driven to move towards the direction of the fixed mold 16, and the product is jacked up through the thimble.

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 mould for producing magnesium alloy product, includes bottom plate, thimble panel, runner, cover half, movable mould, core insert and cavity insert, its characterized in that: the core insert is provided with a lower forming surface, the cavity insert is provided with an upper forming surface, a first forming block and a second forming block are arranged in the core insert and the cavity insert, the first forming block and the second forming block are arranged oppositely, one sides of the first forming block and the second forming block facing the core insert are embedded in one side of the core insert facing the cavity insert, and one sides of the first forming block and the second forming block facing the cavity insert are embedded in one side of the cavity insert facing the core insert;

2. The die for producing a magnesium alloy product according to claim 1, wherein: and a first positioning block is arranged on one side of the first forming block, which is back to the second forming block, a second positioning block is arranged on one side of the second positioning block, which is back to the first forming block, and the first positioning block and the second positioning block are fixedly connected with the fixed die.

3. The die for producing a magnesium alloy product according to claim 2, wherein: a melt flow channel is arranged between the sprue and the cavity and comprises an upper flow channel which is concave towards the fixed die and is of an arc structure, and a first lower flow channel and a second lower flow channel which are communicated with the upper flow channel;

4. The mold for producing a magnesium alloy product according to claim 3, wherein: the first lower flow passage comprises a first extension section in an arc structure, and the second lower flow passage comprises a second extension section in an arc structure;

5. The mold for producing a magnesium alloy product according to claim 4, wherein: the exhaust structure comprises a first exhaust groove and a second exhaust groove which are communicated with the cavity, and the first exhaust groove and the second exhaust groove are both provided with surfaces for the male die core;

6. The mold for producing a magnesium alloy product according to claim 5, wherein: ejector pins are arranged at the bottoms of the first slag collecting bag, the second slag collecting bag, the first lower runner, the second lower runner, the first extension section and the second extension section.