CN202779721U - Segmented mandrel-type casting machine outer mold - Google Patents
Segmented mandrel-type casting machine outer mold Download PDFInfo
- Publication number
- CN202779721U CN202779721U CN 201220577406 CN201220577406U CN202779721U CN 202779721 U CN202779721 U CN 202779721U CN 201220577406 CN201220577406 CN 201220577406 CN 201220577406 U CN201220577406 U CN 201220577406U CN 202779721 U CN202779721 U CN 202779721U
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- mandrel
- external mold
- outer mold
- casting machine
- bolts
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Abstract
The utility model relates to the field of casting, in particular to a casting machine outer mold. A segmented mandrel-type casting machine outer mold comprises a connecting rod, a connector, an outer mold, bolts, a pin hole sleeve-shaped core and a cast sleeve, wherein one end of the connecting rod is fixedly installed on the outer end face of the connector and the other end is connected with an oil cylinder output rod; the connector is fixedly connected with the outer mold by the bolts; the cast sleeve is arranged in the outer mold and is connected with the outer mold by the pin hole sleeve-shaped core; the pin hole sleeve-shaped core comprises a shank and a mandrel; the shank and the mandrel form a sliding pair; and a limiting mechanism is arranged between the shank and the mandrel. The segmented mandrel-type casting machine outer mold has the beneficial effects that at the initial stage of mold opening, the shank is pulled out but the mandrel keeps still, so the bolts do not bear the forces which are generated through cast shrinkage and hold the pin hole sleeve-shaped core tightly, thereby reducing the pull borne by the bolts and avoiding breakage of the bolts or damage to the outer mold.
Description
Technical field
The utility model relates to the casting field, relates in particular to a kind of casting machine external mold.
Background technology
For metal mold aluminum cast member, such as traditional casting machine mold-opening structure of aluminium piston as shown in Figure 1, connecting rod 1 is by connected body 2 direct pull external molds 3, external mold 3 is connected with foundry goods under the connection of bolt 4 and becomes as a whole, mould opening force all concentrates on the bolt 4 that links to each other with external mold simultaneously, because being subject to the restriction of connected body 2 sizes and external mold 3 structures, bolt 4 can not surpass a pair of usually.This mould opening force mainly is divided into three parts: the frictional force that mould self produces because of gravity when the power of the foundry goods cover generation the when power of holding pin-and-hole cover core 5 tightly that foundry goods 6 contractions produce, foundry goods 6 outer wall condensation and in the external mold and die sinking.When foundry goods 6 hour can pull open external mold 3 by the stressed of bolt 4 smoothly, but when the larger needed mould opening force of foundry goods of production was excessive, the phenomenons such as bolt abruption, thread stripping or external mold damage just may appear in bolt 4.For this mould damaged condition, solution only has a kind of, and the repair welding external mold is also repaired internal thread, and the common material of mould is cast iron, this cast iron welding is very difficult, simultaneously owing to being subject to the little and stressed large restriction of die sinking in locus, so that the die life of fixing is very limited; In addition, section is a whole set of moulding during Mould Machining, does not have versatility, once damage an arbitrarily part, a whole set of mould will be scrapped, and the required strength of die sinking greatly also will need more large-scale hydraulic jack, has further improved production cost.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of segmented core shaft type casting machine external mold, pin-and-hole cover core in this external mold consists of by two sections, two sections cover cores are separately fixed at external mold and foundry goods puts, two sections cover cores can relative motion, so that mould opening force is divided into two sections, reduce the pulling force that bolt bears, avoided the fracture of bolt or the damage of external mold.
The utility model is achieved in that a kind of segmented core shaft type casting machine external mold, comprise connecting rod, connected body, external mold, bolt, pin-and-hole cover core and foundry goods cover, described connecting rod one end is fixedly mounted on the outer face of connected body, the other end of connecting rod links to each other with the oil cylinder take-off lever, described connected body is fixedly linked by bolt and external mold, described foundry goods is set in the external mold, link to each other by pin-and-hole cover core between foundry goods cover and the external mold, pin-and-hole cover core is made of footstalk and mandrel two parts, footstalk and mandrel consist of moving sets, are provided with position-limit mechanism between footstalk and the mandrel.
Described footstalk one end is provided with guide groove, and described core sleeve is contained on the guide groove, is provided with positive stop on the mandrel.
Described bolt has two, and two bolts are symmetricly set on the two ends of connected body.
Pin-and-hole cover core in the utility model segmented core shaft type casting machine external mold consists of by two sections, two sections cover cores are separately fixed at external mold and foundry goods puts, two sections cover cores can relative motion, so that mould opening force is divided into two sections, die sinking starting stage footstalk is drawn out and mandrel keeps motionless, bolt need not to bear foundry goods and shrinks the power of holding pin-and-hole cover core tightly that produces, reduced the pulling force that bolt bears, the fracture of bolt or the damage of external mold have been avoided, the pulling force that the buffering bolt bears has been avoided the fracture of bolt or the damage of external mold.
Description of drawings
Fig. 1 is existing casting machine mold-opening structure schematic diagram;
Fig. 2 is the utility model segmented core shaft type casting machine cast outer mold structure schematic diagram;
Fig. 3 is the structural representation after the die sinking of pin-and-hole cover core in the utility model.
Among the figure: 1 connecting rod, 2 connected bodies, 3 external molds, 4 bolts, 5 pin-and-holes cover core, 6 foundry goods, 7 foundry goods covers, 51 footstalks, 52 mandrels, 51 guide grooves.
The specific embodiment
Below in conjunction with specific embodiment, further set forth the utility model.Should be understood that these embodiment only are used for explanation the utility model and are not used in the scope of the present utility model that limits.Should be understood that in addition those skilled in the art can make various changes or modifications the utility model after the content of having read the utility model statement, these equivalent form of values fall within the application's appended claims limited range equally.
Embodiment 1
Such as Fig. 2, shown in 3, a kind of segmented core shaft type casting machine external mold, comprise connecting rod 1, connected body 2, external mold 3, bolt 4, pin-and-hole cover core 5 and foundry goods cover 7, described connecting rod 1 one ends are fixedly mounted on the outer face of connected body 2, the other end of connecting rod 1 links to each other with the oil cylinder take-off lever, described connected body 2 is fixedly linked by bolt 4 and external mold 3, described foundry goods cover 7 is arranged in the external mold 3, link to each other by pin-and-hole cover core 5 between foundry goods cover 7 and the external mold 3, pin-and-hole cover core 5 is made of footstalk 51 and mandrel 52 two parts, footstalk 51 consists of moving sets with mandrel 52, is provided with position-limit mechanism between footstalk 51 and the mandrel 52.
The utility model can further describe into, described footstalk 51 1 ends are provided with guide groove 53, described mandrel 52 is sleeved on the guide groove 53, be provided with positive stop on the mandrel 52, footstalk 51 is fixedly mounted in the external mold 3, mandrel 52 is fixedly mounted in the foundry goods cover 7, when pulling out footstalk 51, only has when footstalk 51 moves to limit position to be stopped that by block Shi Caihui band moving mandrel 52 moves together.
In the present embodiment, described bolt 4 has two, and two bolts 4 are symmetricly set on the two ends of connected body 2.
Use the utility model to cast, in the die sinking starting stage, external mold 3 is outwards motion under the drive of connected body 2, footstalk 51 is along with external mold 3 is pulled out gradually, this moment, mandrel 52 kept motionless, and mould self is because of the frictional force of gravity generation when the power that produces with external mold when 4 usefulness of bolt are born foundry goods 6 outer wall condensation and die sinking; Then after footstalk 51 moved to limit position, footstalk 51 just can be with moving mandrel 52 and foundry goods cover 7 is pulled out together, and this moment, bolt 4 bore the power of holding pin-and-hole cover core 5 tightly that foundry goods 6 shrinks generation; Mould opening force is divided into two sections and is born by bolt 4, has avoided the fracture of bolt 4 or the damage of external mold.
Claims (3)
1. segmented core shaft type casting machine external mold, comprise connecting rod (1), connected body (2), external mold (3), bolt (4), pin-and-hole cover core (5) and foundry goods cover (7), described connecting rod (1) one end is fixedly mounted on the outer face of connected body (2), the other end of connecting rod (1) links to each other with the oil cylinder take-off lever, it is characterized in that: described connected body (2) is fixedly linked by bolt (4) and external mold (3), described foundry goods cover (7) is arranged in the external mold (3), link to each other by pin-and-hole cover core (5) between foundry goods cover (7) and the external mold (3), pin-and-hole cover core (5) is made of footstalk (51) and mandrel (52) two parts, footstalk (51) consists of moving sets with mandrel (52), is provided with position-limit mechanism between footstalk (51) and the mandrel (52).
2. segmented core shaft type casting machine external mold as claimed in claim 1, it is characterized in that: described footstalk (51) one ends are provided with guide groove (53), described mandrel (52) is sleeved on the guide groove (53), and mandrel is provided with positive stop on (52).
3. segmented core shaft type casting machine external mold as claimed in claim 1 or 2, it is characterized in that: described bolt (4) has two, and two bolts (4) are symmetricly set on the two ends of connected body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220577406 CN202779721U (en) | 2012-10-27 | 2012-10-27 | Segmented mandrel-type casting machine outer mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220577406 CN202779721U (en) | 2012-10-27 | 2012-10-27 | Segmented mandrel-type casting machine outer mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202779721U true CN202779721U (en) | 2013-03-13 |
Family
ID=47807063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220577406 Expired - Fee Related CN202779721U (en) | 2012-10-27 | 2012-10-27 | Segmented mandrel-type casting machine outer mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202779721U (en) |
-
2012
- 2012-10-27 CN CN 201220577406 patent/CN202779721U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20131027 |