CN217315822U - Lower die ejection device of low-pressure die - Google Patents
Lower die ejection device of low-pressure die Download PDFInfo
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- CN217315822U CN217315822U CN202220442165.4U CN202220442165U CN217315822U CN 217315822 U CN217315822 U CN 217315822U CN 202220442165 U CN202220442165 U CN 202220442165U CN 217315822 U CN217315822 U CN 217315822U
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- ejector rod
- lower die
- die
- fixing plate
- casting
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Abstract
The utility model relates to a lower die ejection device of a low-pressure die, which comprises an upper die, a lower die and a lower template, wherein the lower die is fixed on the lower template; grooves which are matched with each other are respectively arranged at the lower part of the lower die and the upper part of the lower die plate; a mandril fixing plate is arranged in the groove, and a casting mandril and a force transmission mandril are vertically arranged on the mandril fixing plate; the casting ejector rod and the force transmission ejector rod penetrate through the lower die and move up and down in the lower die; the lower part of the lower die is provided with an elastic component which upwards props against the ejector rod fixing plate and can push the ejector rod fixing plate to rise, so that the force transmission ejector rod rises to exceed the upper end surface of the lower die and the casting ejector rod rises to exceed the lower die cavity; when the force transmission ejector rod is lowered to be flush with the upper end face of the lower die, the casting ejector rod is flush with the lower die cavity under the driving of the ejector rod fixing plate. The utility model discloses can solve conventional low pressure mould lower mould body and not have ejecting structure therefore the foundry goods appears and stays the problem of lower mould.
Description
Technical Field
The utility model relates to a lower mould ejecting device of low-pressure mould belongs to low-pressure mould technical field.
Background
Because low-pressure equipment does not have the ejecting structure of lower mould, therefore conventional low pressure mould lower mould body does not have ejecting structure, only relies on the die cavity pulling force of last mould to take the foundry goods on last mould, and simple structure's mould can be realized, nevertheless to the foundry goods that does not have enough pulling force on last mould, often can appear the foundry goods and leave the mould phenomenon, leads to the productivity to be limited or the product can't the volume production.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide a lower mould ejecting device of low pressure mould, solve conventional low pressure mould lower mould body and do not have ejecting structure therefore the problem that the foundry goods stayed the lower mould appears.
In order to solve the technical problem, the utility model discloses a technical scheme be: a lower die ejection device of a low-pressure die comprises an upper die, a lower die and a lower die plate, wherein the lower die is fixed on the lower die plate, and a cavity is arranged between the upper die and the lower die; grooves which are matched with each other are respectively arranged at the lower part of the lower die and the upper part of the lower die plate; a mandril fixing plate is arranged in the groove, and a casting mandril and a force transmission mandril are vertically arranged on the mandril fixing plate; the casting ejector rod and the force transmission ejector rod penetrate through the lower die and move up and down in the lower die; the lower part of the lower die is provided with an elastic component which upwards props against the ejector rod fixing plate and can push the ejector rod fixing plate to rise, so that the force transmission ejector rod rises to exceed the upper end surface of the lower die and the casting ejector rod rises to exceed the lower die cavity; when the force transmission ejector rod is lowered to be flush with the upper end face of the lower die, the casting ejector rod is flush with the lower die cavity under the driving of the ejector rod fixing plate.
In order to make the lifting process of the lower die more stable, two through holes are arranged in the lower die, a first through hole is arranged below the cavity of the lower die, and the upper end of the first through hole is communicated with the cavity; the second through hole is arranged on the outer side of the lower die cavity; the casting ejector rod penetrates through the first through hole, and the force transmission ejector rod penetrates through the second through hole.
More specifically, the elastic component comprises a set screw and a rectangular spring, the set screw is fixedly connected with the lower portion of the lower die, the rectangular spring is sleeved on the set screw, and the rectangular spring upwards supports against the ejector rod fixing plate.
Furthermore, the lower template is provided with a lower part with an opening for accommodating a set screw and a rectangular spring.
Furthermore, a mandril base plate is arranged in the groove, a mandril fixing plate is arranged above the mandril base plate, and the whole formed by the mandril fixing plate and the mandril base plate can move up and down in the groove; the rectangular spring is upwards propped against the ejector rod bottom plate.
In order to drive the casting ejector rod to descend, the casting ejector rod is a step ejector rod, and the force transmission ejector rod is a straight-through ejector rod; the step part at the lower end of the ejector rod of the casting is fixedly connected with the ejector rod fixing plate; the lower part of the force transmission ejector rod extends into the ejector rod fixing plate.
Compared with the prior art, the utility model, have following advantage:
the utility model discloses an interact of rectangle spring and ejector pin utilizes the motion of mould itself to produce the power to mould cavity foundry goods when mould open-close die, and the direction of force is unanimous with mould direction of motion to this drawing of patterns work of accomplishing the foundry goods eliminates the risk that the lower mould was taken off to the product, accomplishes production smoothly.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is the schematic view of the mold opening state before casting.
Fig. 3 is a schematic view of the mold closed state before casting.
Fig. 4 is the schematic view of the mold opening state after casting.
Fig. 5 is the schematic view of the mold opening state after casting.
Reference numerals: 1-upper die, 2-casting, 3-lower die, 4-casting ejector rod, 5-ejector rod fixing plate, 6-ejector rod bottom plate, 7-lower die plate, 8-force transmission ejector rod, 9-set screw and 10-rectangular spring.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, the lower die ejection device of the low-pressure die comprises an upper die 1, a lower die 3 and a lower die plate 7, wherein a cavity is arranged between the upper die 1 and the lower die 3. The lower die 3 is fixed on the lower die plate 7 through screws and positioning pins.
The lower part of lower mould 3 and the upper portion of lower bolster 7 process out the recess of mutually supporting respectively, and ejector pin fixed plate 5 and ejector pin bottom plate 6 pass through the screw reciprocal anchorage and set up in the recess that lower mould 3 and lower bolster 7 formed, and ejector pin fixed plate 5 is fixed to be set up in ejector pin bottom plate 6 top, and ejector pin fixed plate 5 and ejector pin bottom plate 6 can reciprocate in the recess, and this recess has played the effect of direction simultaneously, and the steady reciprocating of help ejector pin fixed plate 5 and ejector pin bottom plate 6. And a casting ejector rod 4 and a force transmission ejector rod 8 are vertically arranged on the ejector rod fixing plate 5. Two through holes are formed in the lower die 3, a first through hole is formed below the cavity of the lower die 3, and the upper end of the first through hole is communicated with the cavity; and a second through hole is arranged on the outer side of the cavity of the lower die 3, and the upper end of the second through hole extends to the upper end surface of the lower die 3. The casting ejector rod 4 is a step ejector rod, and the force transmission ejector rod 8 is a straight-through ejector rod; the step part at the lower end of the casting ejector rod 4 is fixedly connected with the ejector rod fixing plate 5, and the upper part of the casting ejector rod 4 extends into the first through hole; the lower end of the casting ejector rod 4 adopts a step part, and because the ejector rod fixing plate 5 is fixedly arranged above the ejector rod bottom plate 6, when the ejector rod bottom plate 6 and the ejector rod fixing plate 5 descend, the downward pressure of the ejector rod fixing plate 5 can enable the casting ejector rod 4 to move downwards together. The lower part of the force transmission ejector rod 8 extends into the ejector rod fixing plate 5, and the upper part of the force transmission ejector rod 8 extends into the second through hole. The casting ejector rod 4 and the force transmission ejector rod 8 can move up and down in the lower die 3, and the first through hole and the second through hole of the lower die 3 also play a role in guiding the casting ejector rod 4 and the force transmission ejector rod 8 during movement.
The lower die 3 is connected with a set screw 9, a rectangular spring 10 is sleeved on the set screw 9, and the set screw 9 penetrates through the ejector rod bottom plate 6 and the ejector rod fixing plate 5 from the lower die plate 7 and is locked by a groove at the lower part of the lower die 3. The rectangular spring 10 is in a pre-stressed state between the set screw 9 and the ram base plate 6.
The rectangular spring 10 can push the ejector rod fixing plate 5 to ascend, so that the force transmission ejector rod 8 exceeds the upper end face of the lower die 3, meanwhile, the casting ejector rod 4 exceeds the cavity of the lower die 3, and the casting 2 in the cavity is jacked upwards. When the force transmission ejector rod 8 is lowered to be flush with the upper end face of the lower die 3, the casting ejector rod 4 is driven by the ejector rod fixing plate 5 to be lower than the cavity of the lower die 3 or flush with the cavity of the lower die 3.
The lower template 7 is provided with a lower part with an opening for accommodating a set screw 9 and a rectangular spring 10.
As shown in fig. 2-5, in operation, the upper die 1 descends to contact the upper end of the force transmission mandril 8 first and starts to press down. The ejector rod bottom plate 6 is forced to move downwards so as to drive the casting ejector rod 4 to descend. When the lower surface of the upper die 1 descends to the upper surface of the lower die 3, the movement stops. The rectangular spring 10 is in a compressed state and is always subjected to the downward force transmitted by the force transmission mandril 8. And (4) injecting aluminum liquid into the mold, punching the mold cavity, and opening the mold after cooling. Because the rectangular spring 10 is in a compressed state before, the force applied to the upper end of the force transmission ejector rod 8 begins to be reduced when the upper die 1 rises, so that the rectangular spring 10 begins to rebound, the rebound drives the ejector rod fixing plate 5 and the ejector rod bottom plate 6 to rise, and the casting ejector rod 4 begins to rise and ejects the casting 2. The casting 2 is separated from the cavity of the lower die 3, and the demolding operation is completed.
It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (6)
1. A lower die ejection device of a low-pressure die comprises an upper die (1), a lower die (3) and a lower die plate (7), wherein the lower die (3) is fixed on the lower die plate (7), and a cavity is arranged between the upper die (1) and the lower die (3); the method is characterized in that: grooves which are matched with each other are respectively arranged at the lower part of the lower die (3) and the upper part of the lower template (7); a mandril fixing plate (5) is arranged in the groove, and a casting mandril (4) and a force transmission mandril (8) are vertically arranged on the mandril fixing plate (5); the casting ejector rod (4) and the force transmission ejector rod (8) penetrate through the lower die (3) and move up and down in the lower die (3); the lower part of the lower die (3) is provided with an elastic component, and the elastic component upwards props against the ejector rod fixing plate (5) and can push the ejector rod fixing plate (5) to rise, so that the force-transferring ejector rod (8) rises to exceed the upper end surface of the lower die (3) and the casting ejector rod (4) rises to exceed the cavity of the lower die (3); when the force transmission ejector rod (8) is lowered to be flush with the upper end surface of the lower die (3), the casting ejector rod (4) is driven by the ejector rod fixing plate (5) to be flush with the cavity of the lower die (3).
2. The lower mold ejection device for a low-pressure mold as claimed in claim 1, wherein: two through holes are formed in the lower die (3), a first through hole is formed below the cavity of the lower die (3), and the upper end of the first through hole is communicated with the cavity; the second through hole is formed in the outer side of the cavity of the lower die (3); the casting ejector rod (4) is arranged in the first through hole in a penetrating mode, and the force transmission ejector rod (8) is arranged in the second through hole in a penetrating mode.
3. The lower die ejection device of a low-pressure die as claimed in claim 1, wherein: the elastic component comprises a set screw (9) and a rectangular spring (10), the set screw (9) is fixedly connected with the lower part of the lower die (3), the rectangular spring (10) is sleeved on the set screw (9), and the rectangular spring (10) upwards supports against the ejector rod fixing plate (5).
4. The lower mold ejection device for a low-pressure mold as claimed in claim 3, wherein: the lower template (7) is provided with a lower part with an opening for accommodating a set screw (9) and a rectangular spring (10).
5. The lower mold ejection device for a low-pressure mold as claimed in claim 3, wherein: a mandril bottom plate (6) is further arranged in the groove, the mandril fixing plate (5) is arranged above the mandril bottom plate (6), and the whole formed by the mandril fixing plate (5) and the mandril bottom plate (6) can move up and down in the groove; the rectangular spring (10) upwards supports the ejector rod bottom plate (6).
6. The lower die ejection device of a low-pressure die as claimed in claim 1, wherein: the casting ejector rod (4) is a step ejector rod, and the force transmission ejector rod (8) is a straight-through ejector rod; the step part at the lower end of the casting ejector rod (4) is fixedly connected with the ejector rod fixing plate (5); the lower part of the force transmission ejector rod (8) extends into the ejector rod fixing plate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220442165.4U CN217315822U (en) | 2022-03-02 | 2022-03-02 | Lower die ejection device of low-pressure die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220442165.4U CN217315822U (en) | 2022-03-02 | 2022-03-02 | Lower die ejection device of low-pressure die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217315822U true CN217315822U (en) | 2022-08-30 |
Family
ID=82999346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220442165.4U Active CN217315822U (en) | 2022-03-02 | 2022-03-02 | Lower die ejection device of low-pressure die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217315822U (en) |
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2022
- 2022-03-02 CN CN202220442165.4U patent/CN217315822U/en active Active
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