CN106077464B - Prevent the tooling of precoated sand thin-walled sand mold buckling deformation - Google Patents
Prevent the tooling of precoated sand thin-walled sand mold buckling deformation Download PDFInfo
- Publication number
- CN106077464B CN106077464B CN201610526616.1A CN201610526616A CN106077464B CN 106077464 B CN106077464 B CN 106077464B CN 201610526616 A CN201610526616 A CN 201610526616A CN 106077464 B CN106077464 B CN 106077464B
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- China
- Prior art keywords
- cylinder
- restocking
- sand mold
- buckling deformation
- walled
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- 239000004576 sand Substances 0.000 title claims abstract description 44
- 238000003825 pressing Methods 0.000 claims description 5
- 238000000465 moulding Methods 0.000 abstract description 10
- 238000001816 cooling Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 238000005266 casting Methods 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/12—Treating moulds or cores, e.g. drying, hardening
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Devices For Molds (AREA)
Abstract
The invention discloses a kind of toolings for preventing precoated sand thin-walled sand mold buckling deformation, including undercarriage, restocking, lower fixture, upper fixture and cylinder, the restocking is fixed on undercarriage, the cylinder is fixed in restocking, the undercarriage has work top, the lower fixture is fixed on work top, the upper fixture is fixedly connected with the piston rod of cylinder and is arranged with holder lower faces opposite, it further include throttle valve, control switch and pressure reducing valve, the inlet end of the throttle valve and cylinder connects, the front end of the control switch is connect with pressure reducing valve, rear end is connect with the outlet side of the front end of throttle valve and cylinder respectively.The present invention can the sand mold buckling deformation that occurs in cooling procedure after moulding of pre- sand-proof type, control the die joint gap after mould assembly.
Description
Technical field
The present invention relates to a kind of pressure apparatus, especially a kind of control sand mold deformation tooling.
Background technology
Since traditional precoated sand sand mold weight ratio is heavier, production cost is high, and labor intensity is big in operation by worker.
Now with the popularization of cost efficiency, in order to reduce cost, reduce the labor intensity of worker, it, will by reducing the wall thickness of sand mold
The outer profile of sand mold is made with type, to which sand mold wall thickness be thinned, reduces the weight of sand mold.In moulding, due to precoated sand sand mold
It is that moulding is carried out by heating, needs to cool down after moulding, in cooling procedure since sand mold wall is thin, be easy to cause sand mold
Warpage and deformation, die joint gap is big after molding.
Invention content
The purpose of the present invention is to provide it is a kind of being capable of the sand mold that occurs in cooling procedure after moulding of pre- sand-proof type
Buckling deformation controls the tooling of the prevention precoated sand thin-walled sand mold buckling deformation in the die joint gap after mould assembly.
Realizing the technical solution of the object of the invention is：A kind of tooling for preventing precoated sand thin-walled sand mold buckling deformation, including
Undercarriage, restocking, lower fixture, upper fixture and cylinder, the restocking are fixed on undercarriage, and the cylinder is fixed in restocking, described
There is undercarriage work top, the lower fixture to be fixed on work top, and the upper fixture is fixedly connected with the piston rod of cylinder
And arranged with holder lower faces opposite, further include throttle valve, control switch and pressure reducing valve, the inlet end company of the throttle valve and cylinder
It connects, the front end of the control switch is connect with pressure reducing valve, and rear end is connect with the outlet side of the front end of throttle valve and cylinder respectively.
The restocking is fixedly connected by fastening bolt with undercarriage, and adjusting cushion block is lined between work top and restocking.
It is described control switch front end connect by tracheae with pressure reducing valve, rear end by tracheae respectively with the front end of throttle valve
And the outlet side connection of cylinder.
The control switch and pressure reducing valve are installed in restocking.
The stroke of the cylinder is 150~220mm.
The thickness for adjusting cushion block is 20mm or 40mm or 60mm.
Pressing plate is fixed with by screw in the restocking, the cylinder body of the cylinder is fixed on pressing plate.
With the above structure, by using the present invention, applying certain pressure to sand mold, (this pressure is less than destruction sand mold
Maximum pressure) and dwell time, can effectively prevent precoated sand sand mold and will appear in cooling procedure after moulding and stick up
Song deformation, die joint gap is within the scope of technical standard after ensureing the molding of precoated sand sand mold.And then it eliminates because of sand mold buckling deformation
The runout problem occurred in the overproof problem of caused casting dimension or casting process, and then improve the yield rate of product.
Description of the drawings
The present invention is described in further detail for the embodiment provided below in conjunction with attached drawing.
Fig. 1 is the dimensional structure diagram of the tooling of the prevention precoated sand thin-walled sand mold buckling deformation of the present invention；
Fig. 2 is the structural front view of the present invention；
Fig. 3 is the vertical view of Fig. 2；
Fig. 4 is the left view of Fig. 2.
Specific implementation mode
As shown in Figure 1,2,3, 4, the tooling of a kind of prevention precoated sand thin-walled sand mold buckling deformation of the invention, including undercarriage
1, restocking 5, lower fixture 4, upper fixture 6 and cylinder 9, the restocking 5 are fixed on undercarriage 1, and the cylinder 9 is fixed in restocking 5,
There is the undercarriage 1 work top 2, the lower fixture 4 to be fixed on work top 2, the piston of the upper fixture 6 and cylinder 9
Bar 9-1 is fixedly connected and is arranged face-to-face with lower fixture 4, further includes throttle valve 10, control switch 12 and pressure reducing valve 11, the section
Stream valve 10 connect with the inlet end of cylinder 9, it is described control switch 12 front end connect with pressure reducing valve 11, rear end respectively with throttle valve
10 front end and the outlet side connection of cylinder 9.
As shown in Figure 1,2,3, 4, the restocking 5 is fixedly connected by fastening bolt 7 with undercarriage 1, work top 2 with it is upper
It is lined between frame 5 and adjusts cushion block 3.
As shown in Figure 1, 2, 3, the front end of the control switch 12 is connect with pressure reducing valve 11 by tracheae, and rear end passes through tracheae
It is connect respectively with the outlet side of the front end of throttle valve 10 and cylinder 9.
As shown in Figure 1,3, the control switch 12 and pressure reducing valve 11 are installed in restocking 5.
As shown in Figure 1,2,3, 4, the stroke of the cylinder 9 is 150~220mm.
As shown in Fig. 1,2,4, the thickness for adjusting cushion block 3 is 20mm or 40mm or 60mm.
As shown in Figure 1,3, pressing plate 8 is fixed with by screw 13 in the restocking 5, the cylinder body of the cylinder 9 is fixed on pressure
On plate 8.
As shown in Figure 1,2,3, 4, the present invention is in use, mould preparation sand mold is placed between lower fixture 4 and upper fixture 6.Section
Stream valve 10 is used for controlling the travel speed of cylinder 9, and the travel speed probably control of cylinder 9 is in 40mm/s or so, journey time control
System is in 5s or so, and the stroke of cylinder 9 is in 150~220mm, if the stroke of cylinder 9 is more than 220mm or small in use
In 150mm, it can be replaced between work top 2 and restocking 5 by unscrewing fastening bolt 7 and adjust cushion block 3 to adjust cylinder 9
Stroke, adjust cushion block 3 replaced after fastening bolt 7 is screwed again.Control switch 12 is used for controlling the advance of cylinder 9 with after
It moves back, pressure reducing valve 11 is used for controlling the admission pressure of control switch 12, and general mould preparation sand mold weight is used in 20kg~45g
The pressure of 0.2MPa.
Such as applying the pressure of 0.2MPa to the mould preparation sand mold that weight is 42.1kg, the stroke of cylinder 9 is 200mm, stroke
Time is 5s, removal pressure after travel speed 40mm/s, pressurize 25min, and sand mold passes through and measured after molding point without buckling deformation
Type face gap, die joint gap be 0.4mm, meet the technical standards in range (technical standard molding after die joint gap≤
0.5mm), without runout phenomenon in casting process, the casting after unpacking after ball blast by measuring casting dimension, casting dimension
Meet drawing requirement, to reach goal of the invention, improves the yield rate of product.
Claims (7)
1. a kind of tooling for preventing precoated sand thin-walled sand mold buckling deformation, including undercarriage (1), restocking (5), lower fixture (4), upper folder
Tool (6) and cylinder (9), the restocking (5) are fixed on undercarriage (1), and the cylinder (9) is fixed in restocking (5), and feature exists
In：
A, there is the undercarriage (1) work top (2), the lower fixture (4) to be fixed on work top (2), the upper fixture
(6) it is fixedly connected with the piston rod of cylinder (9) (9-1) and is arranged face-to-face with lower fixture (4),
B, further include throttle valve (10), control switch (12) and pressure reducing valve (11), the air inlet of the throttle valve (10) and cylinder (9)
End connection, it is described control switch (12) front end connect with pressure reducing valve (11), rear end respectively with the front end of throttle valve (10) and gas
The outlet side of cylinder (9) connects.
2. the tooling according to claim 1 for preventing precoated sand thin-walled sand mold buckling deformation, it is characterised in that：The restocking
(5) it is fixedly connected with undercarriage (1) by fastening bolt (7), adjusting cushion block is lined between work top (2) and restocking (5)
(3)。
3. the tooling according to claim 1 for preventing precoated sand thin-walled sand mold buckling deformation, it is characterised in that：The control
Switch (12) front end connect by tracheae with pressure reducing valve (11), rear end by tracheae respectively with the front end of throttle valve (10) and gas
The outlet side of cylinder (9) connects.
4. the tooling according to claim 1 for preventing precoated sand thin-walled sand mold buckling deformation, it is characterised in that：The control
Switch (12) and pressure reducing valve (11) are installed in restocking (5).
5. the tooling according to claim 1 for preventing precoated sand thin-walled sand mold buckling deformation, it is characterised in that：The cylinder
(9) stroke is 150~220mm.
6. the tooling according to claim 2 for preventing precoated sand thin-walled sand mold buckling deformation, it is characterised in that：The adjusting
The thickness of cushion block (3) is 20mm or 40mm or 60mm.
7. the tooling according to claim 1 for preventing precoated sand thin-walled sand mold buckling deformation, it is characterised in that：The restocking
(5) pressing plate (8) is fixed with by screw (13) on, the cylinder body of the cylinder 9 is fixed on pressing plate (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610526616.1A CN106077464B (en) | 2016-07-06 | 2016-07-06 | Prevent the tooling of precoated sand thin-walled sand mold buckling deformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610526616.1A CN106077464B (en) | 2016-07-06 | 2016-07-06 | Prevent the tooling of precoated sand thin-walled sand mold buckling deformation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106077464A CN106077464A (en) | 2016-11-09 |
| CN106077464B true CN106077464B (en) | 2018-08-14 |
Family
ID=57212418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610526616.1A Active CN106077464B (en) | 2016-07-06 | 2016-07-06 | Prevent the tooling of precoated sand thin-walled sand mold buckling deformation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106077464B (en) |
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2016
- 2016-07-06 CN CN201610526616.1A patent/CN106077464B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106077464A (en) | 2016-11-09 |
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| CP03 | Change of name, title or address |
Address after: 213011 No. 51 Wuyi Road, Qishuyan, Changzhou, Jiangsu, 258 Patentee after: CRRC CHANGZHOU AUTO PARTS CO.,LTD. Country or region after: China Patentee after: CRRC Qishuyan Locomotive and Rolling Stock Technology Research Institute Co.,Ltd. Address before: 213011 No. 51 Wuyi Road, Qishuyan, Changzhou, Jiangsu, 258 Patentee before: CRRC CHANGZHOU AUTO PARTS CO.,LTD. Country or region before: China Patentee before: CRRC QISHUYAN INSTITUTE Co.,Ltd. |