CN203649359U - Squeezing mechanism for pressure casting - Google Patents
Squeezing mechanism for pressure casting Download PDFInfo
- Publication number
- CN203649359U CN203649359U CN201320871884.9U CN201320871884U CN203649359U CN 203649359 U CN203649359 U CN 203649359U CN 201320871884 U CN201320871884 U CN 201320871884U CN 203649359 U CN203649359 U CN 203649359U
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- CN
- China
- Prior art keywords
- squeezing
- pin
- squeeze pin
- centre bore
- central hole
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- Expired - Fee Related
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Abstract
Provided is a squeezing mechanism for pressure casting. The squeezing mechanism comprises a squeezing pin and a squeezing pin bush; the squeezing pin is a step rod; a central hole of the squeezing pin bush is of a step-shaped structure cooperating with the squeezing pin; the inner diameter of a big step part of the central hole of the squeezing pin bush is larger than the outer diameter of a big step part of the squeezing pin; the inner diameter of a small step part of the central hole of the squeezing pin bush is smaller than the outer diameter of the big step part of the squeezing pin, and is larger than or equal to the outer diameter of a small step part of the squeezing pin; the big step part of the squeezing pin is arranged the big step part of the central hole of the squeezing pin bush; the small step part of the squeezing pin extends out of the central hole via the small step part of the central hole; the step parts of the squeezing pin cooperate with the step parts of the central hole of the squeezing pin bush so that the squeezing pin is prevented from be separate from the squeezing pin bush; a big step end of the central hole of the squeezing pin bush is connected with the outer end of a squeezing oil cylinder piston rod. After pressing shooting of a pressure casting piece is finished, an oil cylinder pushes the squeezing pin to move in a hydraulic manner, so a squeezing function is achieved before the cooling, and squeezing feeding is carried out for a part difficult to feed in a pressurization process of the casting piece. The squeezing mechanism is free of a squeezing machine, simple to assemble and big in specific pressure of squeezing.
Description
Technical field
The utility model relates to a kind of pressing mechanism, is difficult to for some position the die-cast product that filling puts in place or internal soundness is difficult to supercharging feeding.
Background technology
In manufacturing, especially in the technique such as injection moulding, casting, because casting structure is limit, internal soundness tends to occur tissue looseness and shrinkage cavity, be difficult to realize internal soundness by the adjusting of technique stable, this makes to cause in process of production large-tonnage product to scrap because internal soundness can not be guaranteed, and brings great hidden danger and inconvenience to production.Existing structure of cast die, because shape of product and structure cannot change, therefore cavity shape also cannot be changed, for the thicker large position of wall ratio, cannot put in place in pressurization in feeding, increases die casting machine supercharging specific pressure and only can cause loss to equipment.If use special purpose extrusion press to push foundry goods, cost is larger.
Summary of the invention
Goal of the invention of the present utility model is to overcome the above-mentioned deficiency of prior art and a kind of die casting pressing mechanism is provided, and does not need special purpose extrusion press, can effectively solve because mould structure is limit the problem that cannot ensure interiors of products quality.
To achieve these goals, the technical solution adopted in the utility model is: comprise squeeze pin, extruding guide; Described squeeze pin is a step bars, and the centre bore of extruding guide is the step-like structure coordinating with squeeze pin; The large stage portion internal diameter of described extruding guide centre bore is greater than the large stage portion external diameter of squeeze pin; Extruding guide centre bore small stair portion internal diameter is less than the large stage portion external diameter of squeeze pin, is more than or equal to squeeze pin small stair portion external diameter; The large stage portion of described squeeze pin is placed in extruding guide centre bore large stage portion, and squeeze pin small stair portion stretches out outside centre bore through centre bore small stair portion, and squeeze pin stage portion coordinates with extruding guide centre bore stage portion and prevents that squeeze pin from deviating from from push guide; The large step end of described extruding guide centre bore is connected with the extrusion oil cylinder piston rod outer end for promoting squeeze pin.
The large step end of described extruding guide centre bore is provided with internal thread, and extrusion oil cylinder piston rod outer end is provided with the external screw thread for being connected with extruding guide.
The sleeve for preventing squeeze pin wearing and tearing mold cores is equipped with in described squeeze pin and mold cores contact position; Described sleeve is provided with limited block, and mold cores is provided with and coordinates spacing groove with limited block.
In the time that crush stroke is long and framed installation dimension is not enough, should choose the oil cylinder of suitable dimension.
Compared with prior art, the utility model has the advantage of: do not need extruder, assembling is simple, and extruding specific pressure is large.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the design sketch of foundry goods after the utility model extruding.
Detailed description of the invention
In Fig. 1, squeeze pin 1 comprises extruded segment (small stair portion) and linkage section (large stage portion), and extruded segment contact area is little, and the pressure acting on foundry goods increases greatly; Linkage section (large stage portion) area is large, avoids the poor squeeze pin linkage section that causes too greatly in extrusion oil cylinder 7 piston rods 3 and squeeze pin 1 diameter footpath to rupture.Extruding guide 2 internal orifice end tappings are connected with extrusion oil cylinder 7 piston rods 3, and squeeze pin 1 linkage section (large stage portion) is placed in extruding guide 2 inner chambers.Sleeve 4 is placed in mold cores 5, prevents the squeeze pin mold cores 5 that directly weares and teares.In order to prevent that sleeve 4 from rotating in mold cores or to move, sleeve 4 tail ends are provided with limited block, and mold cores 5 is provided with and coordinates spacing groove with limited block.6 injections of die casting foundry goods complete, cooling before, promote the squeeze pin squeeze function of having moved by oil cylinder hydraulic, feeding is pushed in the position that is difficult to feeding in foundry goods 6 pressurizations.
When the utility model uses, select the pressurized function of die casting machine, treat die casting machine injection complete cooling before, extrusion oil cylinder by hydraulic oil press piston, piston rod 3 moves, piston rod 3 promotes squeeze pin 1 and realizes the pressurized to foundry goods 6.After extruding, foundry goods 6 effects as shown in Figure 2.
Claims (3)
1. a die casting pressing mechanism, is characterized in that: comprise squeeze pin (1), extruding guide (2);
Described squeeze pin (1) is a step bars, and the centre bore of extruding guide (2) is the step-like structure coordinating with squeeze pin (1); The large stage portion internal diameter of described extruding guide (2) centre bore is greater than the large stage portion external diameter of squeeze pin (1); Extruding guide (2) centre bore small stair portion internal diameter is less than the large stage portion external diameter of squeeze pin (1), is more than or equal to squeeze pin (1) small stair portion external diameter; The large stage portion of described squeeze pin (1) is placed in the large stage portion of extruding guide (2) centre bore, and squeeze pin (1) small stair portion stretches out outside centre bore through centre bore small stair portion;
The large step end of described extruding guide (2) centre bore is connected with extrusion oil cylinder (7) piston rod (3) outer end for promoting squeeze pin (1).
2. die casting pressing mechanism according to claim 1, is characterized in that: the large step end of described extruding guide (2) centre bore is provided with internal thread, and extrusion oil cylinder (7) piston rod (3) outer end is provided with the external screw thread for being connected with extruding guide (2).
3. die casting pressing mechanism according to claim 1, is characterized in that: described squeeze pin (1) is equipped with the sleeve (4) for preventing squeeze pin (1) wearing and tearing mold cores (5) with mold cores (5) contact position; Described sleeve (4) is provided with limited block, and mold cores (5) is provided with and coordinates spacing groove with limited block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320871884.9U CN203649359U (en) | 2013-12-27 | 2013-12-27 | Squeezing mechanism for pressure casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320871884.9U CN203649359U (en) | 2013-12-27 | 2013-12-27 | Squeezing mechanism for pressure casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203649359U true CN203649359U (en) | 2014-06-18 |
Family
ID=50915796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320871884.9U Expired - Fee Related CN203649359U (en) | 2013-12-27 | 2013-12-27 | Squeezing mechanism for pressure casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203649359U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105194806A (en) * | 2015-10-29 | 2015-12-30 | 吉林大学 | Die of head and neck neoplasm radiotherapy simulation and detection structure |
| CN108405824A (en) * | 2018-04-20 | 2018-08-17 | 广东鸿图科技股份有限公司 | A kind of die casting squeeze pin special construction |
| CN108580840A (en) * | 2018-06-25 | 2018-09-28 | 上海东岩机械股份有限公司 | A kind of local extrusion device of die casting |
| CN109249002A (en) * | 2018-11-28 | 2019-01-22 | 吴江伟 | A kind of lamp housing aluminum alloy die-casting die |
-
2013
- 2013-12-27 CN CN201320871884.9U patent/CN203649359U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105194806A (en) * | 2015-10-29 | 2015-12-30 | 吉林大学 | Die of head and neck neoplasm radiotherapy simulation and detection structure |
| CN108405824A (en) * | 2018-04-20 | 2018-08-17 | 广东鸿图科技股份有限公司 | A kind of die casting squeeze pin special construction |
| CN108405824B (en) * | 2018-04-20 | 2023-09-26 | 广东鸿图科技股份有限公司 | Special structure of extrusion pin of die casting mold |
| CN108580840A (en) * | 2018-06-25 | 2018-09-28 | 上海东岩机械股份有限公司 | A kind of local extrusion device of die casting |
| CN109249002A (en) * | 2018-11-28 | 2019-01-22 | 吴江伟 | A kind of lamp housing aluminum alloy die-casting die |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 Termination date: 20211227 |