CN216989810U - Magnesium alloy die-casting die - Google Patents
Magnesium alloy die-casting die Download PDFInfo
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- CN216989810U CN216989810U CN202122951938.XU CN202122951938U CN216989810U CN 216989810 U CN216989810 U CN 216989810U CN 202122951938 U CN202122951938 U CN 202122951938U CN 216989810 U CN216989810 U CN 216989810U
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Abstract
The utility model provides a magnesium alloy die-casting die, which comprises a hot runner plate component and a hot sprue, wherein the hot runner plate component comprises an inner runner plate and an outer runner plate, the two sides of the inner runner plate are provided with the outer runner plates in a matching way, the top of the inner runner plate is provided with a nozzle connecting port, the nozzle connecting port is provided with branch hot runners in opposite directions in the inner runner plate along a main hot runner, and the main hot runner and the two branch hot runners form a structure of a spreader cone; one side of the branch hot runner, which is far away from the nozzle connecting port, is communicated with an arc flow state pressure reduction flow channel and a hot runner which are arranged in the outer flow channel plate, and the cold plug is flushed away by magnesium liquid passing through the main hot flow channel, the branch hot runner, the arc flow state pressure reduction flow channel and the hot runner inner flow channel to carry out smooth filling. The utility model adopts the structure of the arc-shaped flow state depressurization flow channel, the collapsing ring and the multi-point feeding, thereby avoiding the occurrence of risk conditions such as air entrainment, cold material, cracks and the like in the flow channel filling; the whole density of the die casting is improved, the service life of the die is prolonged, and the maintenance and cleaning time is reduced.
Description
Technical Field
The utility model mainly relates to the field of lightweight molds, in particular to a magnesium alloy die-casting mold.
Background
At present, the whole casting industry pursues light weight, and some magnesium alloy products pursue higher quality requirements, particularly in the bicycle industry, such as a lower fork leg.
In the production of die casting molds, the following problems are often encountered:
1. the product adopts multipoint pouring, parts are convenient to process, a flow channel is made into a right angle, liquid directly impacts a side wall when being filled at the position to form a vortex, the impact loss is serious, the cold plug is difficult to be flushed by the fluid, the force value is increased when the cold plug is required to be flushed, the loss of equipment parts and mould parts is increased, the aging of the equipment parts and the mould parts is aggravated, the service life is shortened, and the risk of mould material flying is increased;
2. in the production of the die-casting die, if single-point pouring is carried out, the integral filling time is longer, the liquid temperature is reduced quickly, the temperature difference of each section is large, cracks are easy to appear on the product, and the like;
3. in the production of the die-casting die, because the temperature fields of the die are different, the thermal expansion areas of the die are also different, the die parts are cracked due to different temperatures, and the die parts are split into a plurality of parts which cause material running, part clamping and the like due to tolerance, processing and the like.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides a magnesium alloy die-casting die, which comprises a hot runner plate component and a hot sprue 7, wherein the hot runner plate component comprises an inner runner plate 2 and an outer runner plate 3, the two sides of the inner runner plate 2 are provided with the outer runner plate 3 in a matching way, the top of the inner runner plate 2 is provided with a nozzle connecting port 1, the nozzle connecting port 1 is provided with branch hot runners 5 in opposite directions along a main hot runner 4 in the inner runner plate 2, and the main hot runner 4 and the two branch hot runners 5 form a structure of a spreader cone;
the branch hot runner 5 is kept away from nozzle connection mouth 1 one side and is link up with the arc flow state step-down runner 6 that sets up in outer runner plate 3, the other end of arc flow state step-down runner 6 link up with hot runner 8 in the hot runner 7, the hot runner 7 bottom is provided with cold plug 9, by through main hot runner 4, branch hot runner 5, arc flow state step-down runner 6 and the magnesium liquid of hot runner 8 inner flow ways with cold plug 9 rushing open and carry out unblocked filling.
Preferably, a crumple ring 10 is arranged at the joint of the branch hot runner 5 and the arc-shaped flow state pressure reduction runner 6, and the crumple ring 10 is embedded in the hot runner plate assembly.
Preferably, the inner diameter of the inner channel of the collapse ring 10 is smaller than the inner diameters of the branch hot runner 5 and the arc-shaped fluid pressure reduction runner 6, and a gap is formed between the collapse ring 10 and the hot runner plate assembly.
Preferably, the arc of the arc-shaped fluid pressure reduction flow passage 6 is 90 degrees.
Preferably, the vertical center line of the main heat runner 4 coincides with the vertical center line of the inner runner plate 2, and the two branch heat runners 5 are symmetrically arranged along the vertical center line.
Preferably, the main heat flow path 4 and the branch heat flow paths 5 are integrally provided.
Preferably, the junction of the main heat flow passage 4 and the branch heat flow passages 5 is in a chevron shape.
The utility model has the beneficial effects that:
1. the arc-shaped flow state pressure reduction flow channel is adopted, so that the problems of blockage and magnesium leakage of the whole hot runner caused by pressure loss reduction of magnesium alloy liquid in the die-casting filling process are effectively solved, and the risk conditions of air entrainment, cold materials, cracks and the like in the flow channel filling process are avoided;
2. by adopting the collapsing ring, the problem of gaps generated by expansion force between parts is effectively solved, the problems of part abrasion, damage to a die carrier, difficult disassembly due to part clamping, large flash in gaps, material leakage and the like are reduced; thereby prolonging the service life of the die, and reducing the maintenance and cleaning time;
3. by adopting a multipoint feeding structure, the filling time, the pouring weight and the liquid temperature loss of the magnesium alloy liquid in the die-casting process are effectively reduced, the risks of problems of air entrainment, cold material, cracks and the like in the flow channel filling are reduced, and the integral density of die-casting parts is improved.
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is an enlarged view of a portion of the present invention;
in the figure, the position of the first and second end faces,
1. a nozzle connection port; 2. an inner runner plate; 3. an outer flow field plate; 4. a main heat runner; 5. a branch hot runner; 6. an arc-shaped flow state depressurization flow channel; 7. hot pouring; 8. a hot runner; 9. cold plugging; 10. a crush ring.
Detailed Description
In order to make the technical solutions of the present invention better understood and make the above features, objects, and advantages of the present invention more comprehensible, the present invention is further described with reference to the following examples. The examples are intended to illustrate the utility model only and are not intended to limit the scope of the utility model.
As shown in fig. 1-2, the present invention includes: the hot runner plate assembly comprises an inner runner plate 2 and an outer runner plate 3, the outer runner plate 3 is arranged on two sides of the inner runner plate 2 in a matched mode, a nozzle connecting port 1 is arranged at the top of the inner runner plate 2, branch hot runners 5 in opposite directions are arranged in the inner runner plate 2 along a main hot runner 4, and the main hot runner 4 and the two branch hot runners 5 form a structure of a splitter cone;
The branch hot runner 5 is kept away from nozzle connection mouth 1 one side and is link up with the arc flow state step-down runner 6 that sets up in outer runner plate 3, the other end of arc flow state step-down runner 6 link up with hot runner 8 in the hot runner 7, the hot runner 7 bottom is provided with cold plug 9, by through main hot runner 4, branch hot runner 5, arc flow state step-down runner 6 and the magnesium liquid of hot runner 8 inner flow ways with cold plug 9 rushing open and carry out unblocked filling.
In this embodiment, preferably, a crumple ring 10 is disposed at a connection position of the branch hot runner 5 and the arc-shaped fluid step-down flow channel 6, and the crumple ring 10 is embedded in the hot runner plate assembly.
Because the whole hot runner plate expands due to the heating of the hot runner plate and the temperature of magnesium liquid in the runner, the transverse size of the hot runner plate is large, and the deformation is also large, the existing hot runner plate is divided into parts by considering the machining factor, the reserved expansion gap among the parts is enlarged, the risk of material leakage is caused, and the risk of blocking, deformation and the like among the parts in the gap arrangement is caused;
set up above-mentioned structure, utilize the ring that contracts of bursting to have solved and appear the card between the horizontal inflation of hot runner plate and die, warp, run risk such as material, reduce the part card and die not demolish well, the big flash of a knife or a sword of spilling in clearance, run the material scheduling problem.
In this embodiment, preferably, the inner diameter of the inner channel of the collapsing ring 10 is smaller than the inner diameter of the branch hot runner 5 and the arc-shaped fluid pressure-reducing runner 6, and the collapsing ring 10 is arranged in a gap with the hot runner plate assembly.
By adopting the structure, the transverse gap between the crumple ring and the hot runner plate is enlarged, so that the phenomena of blocking, deformation and the like caused by expansion between the hot runner plates can be avoided;
the fit clearance between the inner diameter and the outer diameter of the hot runner plate and the crumple ring is small, so that the phenomenon that the transverse clearance is too large and the material leakage risk occurs can be prevented.
In the present embodiment, the arc of the curved fluid pressure reduction flow path 6 is preferably 90 degrees.
Because the magnesium liquid keeps flowing in a solid solution state in the whole hot runner, if the arc-shaped flow state decompression flow channel is formed into a right angle, on one hand, the magnesium liquid can greatly impact the inner wall of the hot runner, the side wall of the hot runner plate can be cracked due to long-term impact, and the hot runner plate can also be displaced left and right, so that the service life of the whole hot runner plate is greatly reduced, and the risk of magnesium liquid leakage is also caused;
on the other hand, pressure is greatly lost under the condition of right-angle impact, and the excessive pressure loss can cause insufficient pressure of the whole hot sprue, so that the magnesium liquid can not break a cold plug in the hot sprue, the whole filling can not be completed or the product has poor compactness;
therefore, the structure can prevent the magnesium liquid from impacting in the hot runner for a long time to cause damage and displacement risks of the hot runner plate; the pressure drop of fluid in the runner is effectively compensated, the pressure loss of 1.73MPa is reduced, the service lives of equipment and mould parts are prolonged, the risk of flying materials is reduced, the risk that a cold plug in the hot runner cannot be flushed due to excessive pressure loss in the hot runner is prevented, the risk that the whole hot runner is blocked and runs magnesium and the like is caused, and the working efficiency is ensured.
In this embodiment, it is preferable that a vertical center line of the main heat flow passage 4 coincides with a vertical center line of the inner flow passage plate 2, and the two branch hot runners 5 are symmetrically arranged along the vertical center line.
In this embodiment, the main heat flow path 4 and the branch heat flow paths 5 are preferably provided integrally.
In the present embodiment, it is preferable that the junction between the main heat flow passage 4 and the branch heat flow passage 5 has a chevron shape.
Set up above-mentioned structure, through inside reposition of redundant personnel awl structure on the hot runner board, divide into two strands with the magnesium liquid, the incessant heating of deuterogamying hot runner board and hot runner guarantees that the magnesium liquid keeps in the solid solution state, realizes that two multiple spot that advance the runner advance to water, has reduced the filling time of product and has watered row weight on the product, the roll gas appears on the reduction product, crackle scheduling problem improves die casting whole density.
When the device is used, a nozzle connecting port is connected with a nozzle on a die casting machine for feeding, the magnesium liquid is divided into two parts by a structure of a sprue spreader made in the hot runner plate, the two parts of the magnesium liquid are continuously heated in a runner and a hot runner, and the magnesium liquid is filled into a cavity through a pouring gate, so that the whole pouring weight is reduced by multi-point pouring, and the filling time is shortened;
the collapse ring is added in the hot runner plate, so that the risks of jamming, deformation, material running and the like during transverse expansion of the split hot runner plate are solved, and the problems of difficult dismantling due to jamming of parts, large gaps, flash, material running and the like are reduced;
In the whole filling process, the hot runner plate and the hot runner are heated ceaselessly, so that the magnesium liquid can be prevented from being solidified and blocked in the whole runner, and the arc-shaped flow state decompression is added to prevent the magnesium liquid from impacting in the hot runner for a long time to cause damage and displacement risks of the hot runner plate; prevent among the hot runner that pressure loss is too much to cause in the hot runner that the cold plug can't be washed out, lead to whole hot runner to block up the equivocal risk, guaranteed the efficiency of work, on the other hand reduces the hot runner and blocks up and run the risk of magnesium.
The above-described embodiments are merely illustrative of the principles and utilities of the present application and are not intended to limit the present application. Those skilled in the art can modify and/or change the above-described embodiments without departing from the spirit and scope of the present application. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and scope of the present disclosure shall be covered by the claims of this patent application.
Claims (7)
1. The magnesium alloy die-casting die is characterized by comprising a hot runner plate assembly and a hot sprue (7), wherein the hot runner plate assembly comprises an inner runner plate (2) and an outer runner plate (3), the two sides of the inner runner plate (2) are provided with the outer runner plate (3) in a matching manner, the top of the inner runner plate (2) is provided with a nozzle connecting port (1), the nozzle connecting port (1) is provided with branch hot runners (5) in opposite directions in the inner runner plate (2) along a main hot runner (4), and the main hot runner (4) and the two branch hot runners (5) form a structure of a spreader cone;
Nozzle connector (1) one side is kept away from in branch hot runner (5) and arc flow state step-down runner (6) that set up in outer runner board (3) link up, the other end of arc flow state step-down runner (6) link up with hot runner (8) in hot runner (7), hot runner (7) bottom is provided with cold plug (9), is rushed away cold plug (9) by the magnesium liquid through main hot runner (4), branch hot runner (5), arc flow state step-down runner (6) and hot runner (8) inner runner and carries out unblocked packing.
2. The magnesium alloy die-casting die of claim 1, wherein: the connection part of the branch hot runner (5) and the arc-shaped flow state pressure reduction runner (6) is provided with a collapsing ring (10), and the collapsing ring (10) is embedded in the hot runner plate component.
3. The magnesium alloy die-casting mold according to claim 2, characterized in that: the inner diameter of the inner channel of the collapse ring (10) is smaller than the inner diameters of the branch hot runner (5) and the arc-shaped flow state pressure reduction runner (6), and a gap is formed between the collapse ring (10) and the hot runner plate assembly.
4. The magnesium alloy die casting mold according to claim 3, characterized in that: the radian of the arc-shaped flow state pressure reduction flow channel (6) is 90 degrees.
5. The magnesium alloy die-casting mold according to claim 4, wherein: the vertical central line of main hot runner (4) and the vertical central line coincidence of interior runner plate (2), two branch hot runner (5) set up along vertical central line symmetry.
6. The magnesium alloy die-casting die as claimed in claim 5, wherein: the main heat runner (4) and the branch heat runners (5) are integrally arranged.
7. The magnesium alloy die-casting die as claimed in claim 6, wherein: the joint of the main heat flow channel (4) and the branch heat flow channels (5) is in a herringbone shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122951938.XU CN216989810U (en) | 2021-11-29 | 2021-11-29 | Magnesium alloy die-casting die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122951938.XU CN216989810U (en) | 2021-11-29 | 2021-11-29 | Magnesium alloy die-casting die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216989810U true CN216989810U (en) | 2022-07-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122951938.XU Active CN216989810U (en) | 2021-11-29 | 2021-11-29 | Magnesium alloy die-casting die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216989810U (en) |
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2021
- 2021-11-29 CN CN202122951938.XU patent/CN216989810U/en active Active
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