CN210615077U - Local extrusion mechanism of mould - Google Patents
Local extrusion mechanism of mould Download PDFInfo
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- CN210615077U CN210615077U CN201921728539.3U CN201921728539U CN210615077U CN 210615077 U CN210615077 U CN 210615077U CN 201921728539 U CN201921728539 U CN 201921728539U CN 210615077 U CN210615077 U CN 210615077U
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- extrusion
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Abstract
The utility model discloses a local extrusion mechanism of mould, including the hydro-cylinder of fixed mounting on the thimble board, the piston rod of hydro-cylinder passes the thimble board is connected with the connecting rod transmission, the connecting rod is connected with the extrusion round pin, the extrusion round pin is connected with the extrusion pin bush, the extrusion pin bush aims at the position that the product produced the sand hole easily. The utility model discloses the product produces the technical problem of sand hole easily when can solving traditional mould die-casting shaping, simple structure effectively improves the production quality of product.
Description
Technical Field
The utility model relates to a technical field of mould, concretely relates to local extrusion mechanism of mould.
Background
The product shown in fig. 1 requires a thick local wall thickness due to the requirement of its service performance, however, when the product is die-cast, the core part is cooled slowly at the wall thickness, the liquid metal will be reduced in volume when cooled, but the outside is solidified, the inner volume is reduced, and sand holes are easy to be generated. In order to solve the problem of sand hole generation, the solution is to adjust the slag ladle and the runner for many times, but the effect is not ideal all the time, and the product percent of pass is lower.
SUMMERY OF THE UTILITY MODEL
In view of the not enough of background art, the utility model provides a local extrusion mechanism of mould, the technical problem of its solution is how to avoid the product to produce the sand hole because of the wall thickness when the die-casting shaping.
For solving the technical problem, the utility model provides a following technical scheme:
the local extrusion mechanism of the die comprises an oil cylinder fixedly mounted on an ejector plate, wherein a piston rod of the oil cylinder penetrates through the ejector plate and is in transmission connection with a connecting rod, the connecting rod is connected with an extrusion pin, the extrusion pin is connected with an extrusion pin sleeve, and the extrusion pin sleeve is aligned to a position where a sand hole is easily generated in a product.
And a pressing plate is arranged at the bottom of the extrusion pin sleeve, and the extrusion pin penetrates through the pressing plate and is connected with the extrusion pin sleeve.
The extrusion pin and the extrusion pin sleeve are both made of 4Cr5MoSi V1 material.
The extrusion pin sleeve is provided with an accommodating hole for the extrusion pin to extend into, and the fit clearance between the extrusion pin and the extrusion pin sleeve is 0.015-0.03 mm.
Compared with the prior art, the utility model beneficial effect who has is: the utility model discloses the product produces the technical problem of sand hole easily when can solving traditional mould die-casting shaping, effectively improves the production quality of product, simple structure, convenient to use.
Drawings
The utility model discloses there is following figure:
FIG. 1 is a schematic illustration of the product produced in this example;
FIG. 2 is a schematic view of the present embodiment placed in a mold;
fig. 3 is a schematic diagram of the present embodiment.
Detailed Description
As shown in the figures, the local extrusion mechanism of the mold of the present embodiment is mainly used for locally extruding the product 1 shown in fig. 1, and includes an oil cylinder 3 fixedly mounted on an ejector plate 2, a piston rod of the oil cylinder 3 passes through the ejector plate 2 and is in transmission connection with a connecting rod 4, the connecting rod 4 is connected with an extrusion pin 5, the extrusion pin 5 is connected with an extrusion pin sleeve 6, the extrusion pin sleeve 6 is aligned with a part of the product 1 where sand holes are easily generated, which will be described below with a thick-wall position 11, and in operation, after filling, before the molten metal begins to solidify but is not completely solidified, the extrusion pin sleeve 6 effectively extrudes the thick-wall position 11 where sand holes are easily generated, so as to avoid generation of sand holes.
In the present embodiment, in order to further improve the pressing effect, a pressing plate 7 is installed at the bottom of the pressing pin sleeve 6, and the pressing pin 5 passes through the pressing plate 7 to be connected with the pressing pin sleeve 6.
In the present embodiment, in order to ensure that the extrusion pin 5 and the extrusion pin bushing 6 can ensure stable quality in long-term use, and obtain good extrusion effect and ensure the production quality of the product 1, the extrusion pin 5 and the extrusion pin bushing 6 are both made of 4Cr5MoSi V1 material.
In the present embodiment, the pressing pin sleeve 6 has a receiving hole into which the pressing pin 5 protrudes, and the fit clearance between the pressing pin 5 and the pressing pin sleeve 6 is 0.015 to 0.03 mm.
In operation, the oil cylinder 3 drives the connecting rod 4 to move, the connecting rod drives the extrusion pin 5 to move, and the extrusion pin 5 further drives the extrusion pin sleeve 6 to abut against the thick-wall position 11 of the product 1, so that sand holes are avoided. In order to realize good extrusion effect and ensure the production quality of the product 1, the pressurizing time is generally controlled to be 0.8-2s after the injection is finished, and the pressurizing pressure is controlled to be 150-250 MPA.
To sum up, the utility model discloses product 1 produces the technical problem of sand hole easily when can solving traditional mould die-casting shaping, effectively improves the production quality of product, simple structure, convenient to use.
Claims (4)
1. Local extrusion mechanism of mould, its characterized in that: the device comprises an oil cylinder fixedly mounted on an ejector plate, wherein a piston rod of the oil cylinder penetrates through the ejector plate and is in transmission connection with a connecting rod, the connecting rod is connected with an extrusion pin, the extrusion pin is connected with an extrusion pin sleeve, and the extrusion pin sleeve is aligned to a position where a sand hole is easy to generate on a product.
2. The local extrusion mechanism of a mold according to claim 1, wherein: and a pressing plate is arranged at the bottom of the extrusion pin sleeve, and the extrusion pin penetrates through the pressing plate and is connected with the extrusion pin sleeve.
3. The local extrusion mechanism of a mold according to claim 1, wherein: the extrusion pin and the extrusion pin sleeve are both made of 4Cr5MoSi V1 material.
4. The local extrusion mechanism of a mold according to claim 1, wherein: the extrusion pin sleeve is provided with an accommodating hole for the extrusion pin to extend into, and the fit clearance between the extrusion pin and the extrusion pin sleeve is 0.015-0.03 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921728539.3U CN210615077U (en) | 2019-10-15 | 2019-10-15 | Local extrusion mechanism of mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921728539.3U CN210615077U (en) | 2019-10-15 | 2019-10-15 | Local extrusion mechanism of mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210615077U true CN210615077U (en) | 2020-05-26 |
Family
ID=70749848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921728539.3U Active CN210615077U (en) | 2019-10-15 | 2019-10-15 | Local extrusion mechanism of mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210615077U (en) |
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2019
- 2019-10-15 CN CN201921728539.3U patent/CN210615077U/en active Active
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