CN214442968U - Liquid forging extrusion die with overflow launder - Google Patents
Liquid forging extrusion die with overflow launder Download PDFInfo
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- CN214442968U CN214442968U CN202120029700.9U CN202120029700U CN214442968U CN 214442968 U CN214442968 U CN 214442968U CN 202120029700 U CN202120029700 U CN 202120029700U CN 214442968 U CN214442968 U CN 214442968U
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Abstract
The utility model provides a liquid forging extrusion die with an overflow groove, in the die assembly process of an upper die and a lower die, the redundant molten metal filled with a die cavity is discharged out of the die cavity through the overflow groove arranged at a certain position of the lower die; after the upper die reaches the designated position, the overflow groove sealer of the upper die seals the overflow groove, so that molten metal with a fixed volume is obtained in the cavity; in the subsequent pressurizing process, the upper die core is pushed by the molten metal to overcome the elasticity of the disc spring and retract to a certain position, so that the shape of the cavity is fixed. At the moment, the matching distance between the upper die outer sleeve and the lower die meets the sealing requirement under the pressurizing condition, the forge piece is solidified and formed under the high-pressure condition, and the forge piece with precise size can be obtained. The combined crawler plate can be formed by one-time forging, the problem of belt removal of the crawler is solved, the material utilization rate and the production efficiency are improved, the problems of high labor intensity and low material utilization rate of workers are solved, and the requirement of batch production is met.
Description
Technical Field
The utility model belongs to the technical field of liquid forging, concretely relates to liquid forging extrusion die with overflow launder.
Background
Liquid forging, which is a technique intermediate between casting and forging processes, is generally performed by pouring liquid metal into lower dies, pressurizing with an upper die so that the molten metal fills cavities formed between the upper and lower dies, and finally solidifying under high pressure to form the desired forging. Only the clearance fit of the mating surfaces between the upper and lower dies is achieved during this process, and the distance that the upper die, without hard contact, will eventually travel downward is limited by the molten metal in the lower die. After the cavity is filled with molten metal, the upper die can not move downwards any more, and at the moment, the metal with a certain shape is gradually cooled and solidified to form a complete casting. In the process, the pressure reaches more than 300MPa, and the matching area between the upper die and the lower die can reach a certain distance to ensure that the molten metal cannot fly out of the gap during pressurization. In the current method, molten metal is directly put into a lower die, so the weight requirement on the molten metal is strict, the dimension of a forged piece is unqualified directly due to errors, and the amount of poured molten metal must be strictly controlled in order to obtain a qualified casting. However, due to various physical characteristics of the hot metal, the quantification of the molten metal is difficult, the maximum quantification precision of the soup feeder, the pneumatic quantification and the electromagnetic pump is +/-2%, and the produced product is difficult to achieve higher precision. Therefore, it is necessary to take measures in the mold design to achieve the effect of improving the product precision.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model provides a liquid forging extrusion die with overflow launder to solve the technical problem who how to control the interior metal liquid capacity of liquid forging mould.
(II) technical scheme
In order to solve the problems, the utility model provides a liquid forging extrusion die with an overflow groove, which comprises a lower die, an overflow groove baffle, an overflow groove sealer, an upper die outer sleeve, a homing spring, a disc spring, an upper die base plate, an upper die plate, a guide sleeve and an upper die core; wherein, the upper surface of the lower die is provided with an overflow groove, and the outer side of the overflow groove is provided with an overflow groove baffle; the upper template, the upper die base plate and the upper die outer sleeve are connected through bolts from top to bottom; the overflow groove sealer is arranged in the mounting hole of the upper die outer sleeve and is limited by a step at the lower part of the mounting hole; a return spring corresponding to the overflow groove sealer is pressed in the mounting hole of the upper die outer sleeve by the upper die base plate to tightly press the overflow groove sealer; the disc spring is arranged in a central hole of the upper die base plate, and the guide sleeve is arranged at the central position of the disc spring; a die core bolt sequentially penetrates through the through hole of the upper die plate and the through hole of the upper die base plate to connect the upper die core with the upper die plate; a certain distance is kept between the upper surface of the upper die core and the lower surface of the upper die base plate, and the upper end and the lower end of the disc spring are respectively abutted against the lower surface of the upper die plate and the upper surface of the upper die core; the upper die core is ejected downwards for a certain distance in advance through the disc spring, so that the upper die core has a certain up-down moving range.
Further, the mold includes a plurality of overflow troughs and corresponding overflow trough closures.
Further, a plurality of overflow chutes are uniformly distributed on the upper surface of the lower die in the circumferential direction.
(III) advantageous effects
The utility model provides a liquid forging extrusion die with an overflow groove, in the die assembly process of an upper die and a lower die, the redundant molten metal filled with a die cavity is discharged out of the die cavity through the overflow groove arranged at a certain position of the lower die; after the upper die reaches the designated position, the overflow groove sealer of the upper die seals the overflow groove, so that molten metal with a fixed volume is obtained in the cavity; in the subsequent pressurizing process, the upper die core is pushed by the molten metal to overcome the elasticity of the disc spring and retract to a certain position, so that the shape of the cavity is fixed. At the moment, the matching distance between the upper die outer sleeve and the lower die meets the sealing requirement under the pressurizing condition, the forge piece is solidified and formed under the high-pressure condition, and the forge piece with precise size can be obtained. The combined crawler plate can be formed by one-time forging, the problem of belt removal of the crawler is solved, the material utilization rate and the production efficiency are improved, the problems of high labor intensity and low material utilization rate of workers are solved, and the requirement of batch production is met.
Drawings
Fig. 1 is a front sectional view of a liquid forging extrusion die structure according to an embodiment of the present invention;
fig. 2 is a three-dimensional view of the structure of the liquid forging extrusion die of the embodiment of the present invention.
Detailed Description
In order to make the objects, contents and advantages of the present invention clearer, the following description will make a detailed description of embodiments of the present invention with reference to the accompanying drawings and examples.
The current liquid forging process is to introduce molten metal into a lower die and then to press and form the molten metal by an upper die. The upper die and the lower die are contacted to form a closed space, the volume of the forge piece is equal to the volume of the introduced molten metal minus the volume contraction part, the molten metal is in the closed space in the forming process of the forge piece, the height and the size of the forge piece are directly determined by the volume of the introduced molten metal, and the requirement on quantitative precision of the introduced molten metal is high. Because the molten metal ration of high temperature has a lot of uncertainties, the utility model provides a liquid forging extrusion die of wheel-shaped part with overflow launder through designing overflow arrangement on the mould, with unnecessary metal discharge mould die cavity, is the more easy way that reaches of obtaining the precision forging.
The structure of the liquid forging extrusion die for the wheel-shaped part with the overflow groove provided by the embodiment is shown in fig. 1 and 2, and the liquid forging extrusion die comprises a lower die 1, an overflow groove baffle 2, an overflow groove sealer 3, an upper die outer sleeve 4, a homing spring 5, a disc spring 6, an upper die base plate 7, an upper die plate 8, a guide sleeve 9 and an upper die core 10.
The upper surface of the lower die 1 is provided with three overflow chutes which are uniformly distributed in the circumferential direction, and an overflow chute baffle 2 is arranged on the outer side of each overflow chute to prevent metal liquid from splashing and hurting people when being discharged.
The upper template 8, the upper die base plate 7 and the upper die outer sleeve 4 are connected through bolts from top to bottom. The three overflow groove sealers 3 are arranged in three mounting holes which are uniformly distributed in the circumferential direction of the upper die outer sleeve 4, and the overflow groove sealers 3 are limited by steps at the lower parts of the mounting holes.
The return spring 5 corresponding to each overflow groove sealer 3 is pressed in the mounting hole of the upper die outer sleeve 4 by the upper die base plate 7 to press the overflow groove sealer 3 tightly, so that the position fixing function is realized.
The disc spring 6 is arranged in a central hole of the upper die base plate 7, and the guide sleeve 9 is arranged at the central position of the disc spring 6 to play a role in fixing the position. And the mold core bolt sequentially penetrates through the through hole of the upper mold plate 8 and the through hole of the upper mold base plate 7 to connect the upper mold core 10 with the upper mold plate 8. A certain distance is kept between the upper surface of the upper die core 10 and the lower surface of the upper die base plate 7, and the upper end and the lower end of the disc spring 6 are respectively abutted against the lower surface of the upper die plate 8 and the upper surface of the upper die core 10. The upper die core 10 can be ejected downwards by a certain distance in advance through the disc spring 6, so that the upper die core 10 can have a certain up-down moving range.
When the upper die integrally moves downwards and reaches a preset position, the redundant metal liquid in the die overflows from the overflow groove, when the upper die reaches the preset position, the overflow groove sealer 3 is inserted into the overflow groove at the corresponding position of the lower die 1 to seal the overflow groove,
when the upper die continues to move downwards, the pressure continues to be applied downwards after the overflow chute is closed, so that the overflow chute closer 3 can keep a certain pressure after the movement is stopped. Meanwhile, when the upper die outer sleeve 4 moves downwards, the upper die core 10 retracts upwards under the action of the molten metal and the disc spring 6, so that the matching distance between the upper die and the lower die is further enlarged, when the upper surface of the upper die core 10 is contacted with the lower surface of the upper die base plate 7, a fixed space is formed between the bottom of the upper die core 10 and the lower die 1, namely the precise shape of the forge piece, and the forge piece with qualified size precision can be obtained.
The liquid forging extrusion die of the utility model designs and manufactures the overflow groove at the special position of the lower die, when the die is heated to 200-250 ℃, the metal liquid is poured in, and in the die closing process of the upper die and the lower die, the redundant metal liquid filled with the die cavity is discharged out of the die cavity through the overflow groove; after the upper die reaches the designated position, the overflow groove sealer of the upper die seals the overflow groove, so that molten metal with a fixed volume is obtained in the cavity; in the subsequent pressurizing process, the upper die core is pushed by the molten metal to overcome the elasticity of the disc spring and retract to a certain position, so that the shape of the cavity is fixed. At the moment, the matching distance between the upper die outer sleeve and the lower die meets the sealing requirement under the pressurizing condition, the forge piece is solidified and formed under the high-pressure condition, and the forge piece with precise size can be obtained.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.
Claims (3)
1. A liquid forging extrusion die with an overflow groove is characterized by comprising a lower die, an overflow groove baffle, an overflow groove sealer, an upper die outer sleeve, a homing spring, a disc spring, an upper die base plate, an upper die plate, a guide sleeve and an upper die core; wherein the content of the first and second substances,
the upper surface of the lower die is provided with an overflow groove, and the outer side of the overflow groove is provided with an overflow groove baffle;
the upper template, the upper die base plate and the upper die outer sleeve are connected through bolts from top to bottom; the overflow groove sealer is arranged in the mounting hole of the upper die outer sleeve and is limited by a step at the lower part of the mounting hole;
a return spring corresponding to the overflow groove sealer is pressed in the mounting hole of the upper die outer sleeve by the upper die base plate to tightly press the overflow groove sealer;
the disc spring is arranged in a central hole of the upper die base plate, and the guide sleeve is arranged at the central position of the disc spring;
a die core bolt sequentially penetrates through the through hole of the upper die plate and the through hole of the upper die base plate to connect the upper die core with the upper die plate; a certain distance is kept between the upper surface of the upper die core and the lower surface of the upper die base plate, and the upper end and the lower end of the disc spring are respectively abutted against the lower surface of the upper die plate and the upper surface of the upper die core; the upper die core is ejected downwards for a certain distance in advance through the disc spring, so that the upper die core has a certain up-down moving range.
2. The liquid forging extrusion die of claim 1, wherein said die includes a plurality of overflow launders and corresponding overflow launder sealers.
3. The liquid forging extrusion die of claim 1, wherein the plurality of overflow troughs are uniformly circumferentially distributed on the upper surface of the lower die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120029700.9U CN214442968U (en) | 2021-01-07 | 2021-01-07 | Liquid forging extrusion die with overflow launder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120029700.9U CN214442968U (en) | 2021-01-07 | 2021-01-07 | Liquid forging extrusion die with overflow launder |
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| Publication Number | Publication Date |
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| CN214442968U true CN214442968U (en) | 2021-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120029700.9U Active CN214442968U (en) | 2021-01-07 | 2021-01-07 | Liquid forging extrusion die with overflow launder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112775413A (en) * | 2021-01-07 | 2021-05-11 | 北京北方车辆集团有限公司 | Liquid forging extrusion die with overflow launder |
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2021
- 2021-01-07 CN CN202120029700.9U patent/CN214442968U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112775413A (en) * | 2021-01-07 | 2021-05-11 | 北京北方车辆集团有限公司 | Liquid forging extrusion die with overflow launder |
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