CN208083356U - A kind of excavator shell casting sand mold hollow molding device - Google Patents
A kind of excavator shell casting sand mold hollow molding device Download PDFInfo
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- CN208083356U CN208083356U CN201820582818.2U CN201820582818U CN208083356U CN 208083356 U CN208083356 U CN 208083356U CN 201820582818 U CN201820582818 U CN 201820582818U CN 208083356 U CN208083356 U CN 208083356U
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- cylinder
- sand mold
- sand
- shell casting
- molding device
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Abstract
The utility model discloses a kind of excavator shell casting sand mold hollow molding devices, including cylinder, hanging ring and cover board, the cylinder is rolled by steel plate to be welded, multiple gas vents are evenly arranged on the cylinder, the hanging ring is by plain bar cold bending, and it is welded on cylinder inboard wall, it is suitable for reading that the cover board is covered in cylinder, and is flexibly connected with cylinder.In phenolic sand molding, it is placed in sand mold and keep around and bottom and core cavity there are enough mold thickness cylinder, to obtain hollow sand mold.The utility model is simple in structure, easy to operate, can Reusability, cost saved molding resin sand dosage, reduce production cost.
Description
Technical field
The utility model belongs to machine casting field, and in particular to a kind of excavator shell casting sand mold hollow molding dress
It sets.
Background technology
Shell is the important spare part in excavator, as shown in Figure 1, the knot with relatively deep larger basin shape and uniform wall thickness
Structure feature, such casting internal diameter is in Ф 500~Ф 1000mm, and depth is in 500~800mm, and main wall thickness is in 15~25mm, weight
In 100~300kg, generally up and furan resin-sand is codded formative technology production using shell flange.Due to shell casting
Inner cavity it is relatively deep larger, cod larger, casting top box sand mold is heavier, needs to consume more resin sand dosages, production cost compared with
It is high.Need thus it is a kind of will cod and top box sand mold makes hollow building mortion, save resin sand production cost.
Utility model content
A kind of excavator shell casting sand mold is provided the purpose of this utility model is to overcome the deficiencies in the prior art
Hollow molding device.
In order to achieve the above objectives, technical solution used by the utility model is：It is special including cylinder, hanging ring and cover board
Sign is：The cylinder is rolled by steel plate to be welded, and multiple gas vents is evenly arranged on the cylinder, the hanging ring is by light
Round bar cold bending, and be welded on cylinder inboard wall, it is suitable for reading that the cover board is covered in cylinder, and is flexibly connected with cylinder.
Preferably, the cylinder is placed in resin sand sand mold and keeps the mold thickness of around and bottom and core cavity
For 50~80mm.
Preferably, the cylinder is placed in resin sand sand mold and to keep cylinder suitable for reading equal with sandbox top surface.
Preferably, a diameter of 5~10mm of the gas vent.
Preferably, the cover board is made of 2~3mm steel plates or three-ply board material.
Compared with prior art, the utility model has the beneficial effects that：
The utility model is placed in resin sand sand mold and keeps around and bottom and core cavity to have by cylinder is shaped
Enough mold thickness and obtain hollow sand mold, tube structure is simple, easy to operate, can Reusability, cost saved and make
Type resin sand dosage, reduces production cost.
Description of the drawings
Attached drawing 1 is excavator shell casting structure sectional view；
Attached drawing 2 is a kind of tube structure sectional view of excavator shell casting sand mold hollow molding device of the utility model；
Attached drawing 3 is the vertical view of Fig. 2；
Attached drawing 4 is a kind of modeling structure sectional view of excavator shell casting sand mold hollow molding device of the utility model.
Wherein, 1-cylinder；2-hanging rings；3-cover boards；4-gas vents；5-shell castings；51-core cavities；6—
Sandbox；7-die joints；8-cope plates；9-cod；10-upper sand molds.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
With reference to Fig. 2, Fig. 3, Fig. 4, the utility model provides a kind of technical solution：Including cylinder 1, hanging ring 2 and cover board 3,
Middle cylinder body 1 is rolled by steel plate to be welded, and multiple gas vents 4 is evenly arranged on cylinder 1, hanging ring 2 is by plain bar clod wash
Forming, and is welded on 1 inner wall of cylinder, and it is suitable for reading that the cover board 3 is covered in cylinder 1, and is flexibly connected with cylinder 1.
According to the bathtub construction size and weight size of shell casting 5,1 size of cylinder is varied from, cylinder 1 is set with the shape
In resin sand sand mold and 1 periphery of cylinder and bottom and the mold thickness of core cavity 51 is kept to be designed as：100kg casting eats sand
Amount is 50mm, and the mold thickness of 200kg casting is 65mm, and the mold thickness of 300kg casting is 80mm.
Cylinder 1 is placed in resin sand sand mold and keeps cylinder 1 suitable for reading equal with 6 top surface of sandbox, is scraped convenient for moudling scraper
Flat sand mold operation.
When putting sand molding using continuous resin sand mixer, it is suitable for reading that cover board 3 is placed in cylinder 1, prevents resin sand from flowing into
In cylinder 1, resin sand dosage is wasted.
Multiple Ф 8mm gas vents 4 are uniformly arranged on 1 periphery of cylinder and bottom, sand mold exhaust is unimpeded when being conducive to pour into a mould,
Prevent casting from generating gas hole defect.
In the present embodiment, a kind of moulding production method of excavator shell casting sand mold hollow molding device, including it is following
Step：
（1）Cylinder 1 is made, welding hanging ring 2 makes cover board 3, and gas vent 4 is bored on cylinder 1；
（2）10 sandbox 6 of upper sand mold is placed on the die joint 7 of the cope plate 8 of shell casting 5；
（3）Cope plate 8 pit cod 9 bottom surface at put one layer of resin sand and eat layer of sand；
（4）By cylinder 1 be positioned over pit cod 9 bottom center, keep 1 periphery of cylinder and core cavity apart from equal,
And keep cylinder 1 suitable for reading equal with 6 top surface of sandbox；
（5）Put sand molding, with resin sand will cod 9 and 10 sandbox 6 of upper sand mold fill up and shake consolidation；
（6）10 sandbox of upper sand mold, 6 top surface resin sand is struck off with scraper plate, cover board 3 is removed in the molding after resin sand hardening,
Shell casting sand mold hollow molding moulding is completed to make.
In the present embodiment, excavator shell casting 5 is circle basin shape, and hollow formed cylinder body 1 is designed as cylindrical shape, and cylinder
Body 1 is arranged in upper sand mold 10.
According to the pouring position of basin shaped cast part, cylinder 1 can be arranged in lower sand mold.
Basin shaped cast part be pit casting, hollow formed cylinder body 1 with the shape design, can justify can abnormity, may be provided at
In sand mold 10 or lower sand mold, Foundry quartz sand is greatly saved, reduces production cost.
Claims (4)
1. a kind of excavator shell casting sand mold hollow molding device, including cylinder（1）, hanging ring（2）And cover board（3）, feature
It is：The cylinder（1）It is rolled and is welded by steel plate, multiple gas vents are evenly arranged on the cylinder（4）, the hanging ring
（2）By plain bar cold bending, and it is welded on cylinder（1）Inner wall, the cover board（3）It is covered in cylinder（1）It is suitable for reading, and with cylinder
Body（1）Flexible connection.
2. a kind of excavator shell casting sand mold hollow molding device according to claim 1, the cylinder（1）It is placed in resin
In sand sand mold and keep cylinder（1）Periphery and bottom and core cavity（51）Mold thickness be 50~80mm.
3. a kind of excavator shell casting sand mold hollow molding device according to claim 1, it is characterised in that：The cylinder
（1）It is placed in resin sand sand mold and keeps cylinder（1）Suitable for reading and sandbox（6）Top surface is equal.
4. a kind of excavator shell casting sand mold hollow molding device according to claim 1, it is characterised in that：The exhaust
Hole（4）A diameter of 5~10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820582818.2U CN208083356U (en) | 2018-04-23 | 2018-04-23 | A kind of excavator shell casting sand mold hollow molding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820582818.2U CN208083356U (en) | 2018-04-23 | 2018-04-23 | A kind of excavator shell casting sand mold hollow molding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208083356U true CN208083356U (en) | 2018-11-13 |
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ID=64055689
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820582818.2U Active CN208083356U (en) | 2018-04-23 | 2018-04-23 | A kind of excavator shell casting sand mold hollow molding device |
Country Status (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108296443A (en) * | 2018-04-23 | 2018-07-20 | 溧阳市联华机械制造有限公司 | A kind of excavator shell casting sand mold hollow molding device |
-
2018
- 2018-04-23 CN CN201820582818.2U patent/CN208083356U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108296443A (en) * | 2018-04-23 | 2018-07-20 | 溧阳市联华机械制造有限公司 | A kind of excavator shell casting sand mold hollow molding device |
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