CN106077464A - The frock of prevention precoated sand thin-walled sand mold buckling deformation - Google Patents
The frock of prevention precoated sand thin-walled sand mold buckling deformation Download PDFInfo
- Publication number
- CN106077464A CN106077464A CN201610526616.1A CN201610526616A CN106077464A CN 106077464 A CN106077464 A CN 106077464A CN 201610526616 A CN201610526616 A CN 201610526616A CN 106077464 A CN106077464 A CN 106077464A
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- China
- Prior art keywords
- cylinder
- added
- frock
- sand mold
- buckling deformation
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- Granted
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- 239000004576 sand Substances 0.000 title claims abstract description 44
- 230000002265 prevention Effects 0.000 title claims description 10
- 210000003437 trachea Anatomy 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 5
- 238000000465 moulding Methods 0.000 abstract description 6
- 238000001816 cooling Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 238000005266 casting Methods 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004804 winding 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Devices For Molds (AREA)
Abstract
The invention discloses a kind of frock preventing precoated sand thin-walled sand mold buckling deformation, including undercarriage, added, lower clamp, upper fixture and cylinder, described added it is fixed on undercarriage, described cylinder is fixed on added, described undercarriage has work top, described lower clamp is fixed on work top, described upper fixture is fixing with the piston rod of cylinder to be connected and arranges with holder lower faces opposite, also include choke valve, control switch and air relief valve, described choke valve is connected with the inlet end of cylinder, the described front end controlling switch is connected with air relief valve, rear end is connected with the front end of choke valve and the outlet side of cylinder respectively.The present invention can the sand mold buckling deformation that occurs in cooling procedure after moulding terminates 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, particularly a kind of control sand mold deformation frock.
Background technology
Owing to traditional precoated sand sand mold weight ratio is heavier, production cost is high, and workman's labor intensity when operation is big.
Now with the popularization of cost efficiency, in order to reduce cost, reduce the labor intensity of workman, by reducing the wall thickness of sand mold, will
The outline of sand mold is made with type, thus thinning sand mold wall thickness, reduce the weight of sand mold.When moulding, due to precoated sand sand mold
Carrying out moulding by heating, moulding needs cooling after terminating, thin due to sand mold wall in cooling procedure, is easily caused sand mold
Warpage and deformation, after matched moulds, die joint gap is big.
Summary of the invention
It is an object of the invention to provide a kind of can pre-sand-proof type after moulding terminates in cooling procedure occur sand mold
Buckling deformation, controls the frock of the prevention precoated sand thin-walled sand mold buckling deformation in the die joint gap after mould assembly.
The technical scheme realizing the object of the invention is: a kind of frock preventing precoated sand thin-walled sand mold buckling deformation, including
Undercarriage, added, lower clamp, upper fixture and cylinder, described added be fixed on undercarriage, and described cylinder is fixed on added, described
Undercarriage has work top, and described lower clamp is fixed on work top, and described upper fixture is fixing with the piston rod of cylinder to be connected
And arrange with holder lower faces opposite, also including choke valve, control switch and air relief valve, described choke valve connects with the inlet end of cylinder
Connecing, the described front end controlling switch is connected with air relief valve, and rear end is connected with the front end of choke valve and the outlet side of cylinder respectively.
Described added be connected by fastening bolt and undercarriage are fixing, work top and added between be lined with regulation cushion block.
The described front end controlling switch is connected by trachea with air relief valve, rear end pass through trachea respectively with the front end of choke valve
And the outlet side of cylinder connects.
The described switch that controls is installed on added with air relief valve.
The stroke of described cylinder is 150～220mm.
The thickness of described regulation cushion block is 20mm or 40mm or 60mm.
Described added on be fixed with pressing plate by screw, the cylinder body of described cylinder is fixed on pressing plate.
After using said structure, the application of the invention, sand mold applies certain pressure, and (this pressure is less than destroying sand mold
Maximum pressure) and dwell time, can effectively prevent precoated sand sand mold from after moulding terminates, cooling procedure there will be and stick up
Bent deformation, it is ensured that after precoated sand sand mold matched moulds, die joint gap is in the range of technical standard.And then eliminate because of sand mold buckling deformation
The overproof problem of casting dimension caused, or the runout problem occurred in casting process, and then improve the yield rate of product.
Accompanying drawing explanation
The present invention is further detailed explanation for the embodiment be given below in conjunction with accompanying drawing.
Fig. 1 is the perspective view of the frock 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 top view of Fig. 2；
Fig. 4 is the left view of Fig. 2.
Detailed description of the invention
As shown in Figure 1,2,3, 4, a kind of frock preventing precoated sand thin-walled sand mold buckling deformation of the present invention, including undercarriage
1, added 5, lower clamp 4, upper fixture 6 and cylinder 9, described added 5 are fixed on undercarriage 1, and described cylinder 9 is fixed on added 5,
Described undercarriage 1 has work top 2, and described lower clamp 4 is fixed on work top 2, described upper fixture 6 and the piston of cylinder 9
Bar 9～1 is fixing to be connected and arranges face-to-face with lower clamp 4, also includes choke valve 10, controls switch 12 and air relief valve 11, described
Choke valve 10 is connected with the inlet end of cylinder 9, described control switch 12 front end be connected with air relief valve 11, rear end respectively with throttling
The front end of valve 10 and the outlet side of cylinder 9 connect.
As shown in Figure 1,2,3, 4, described added 5 are connected by fastening bolt 7 and undercarriage 1 is fixing, work top 2 and on
Regulation cushion block 3 it is lined with between frame 5.
As shown in Figure 1, 2, 3, the described front end controlling switch 12 is connected by trachea with air relief valve 11, and trachea is passed through in rear end
It is connected with the front end of choke valve 10 and the outlet side of cylinder 9 respectively.
As shown in Figure 1,3, described control switch 12 and air relief valve 11 are installed on added 5.
As shown in Figure 1,2,3, 4, the stroke of described cylinder 9 is 150～220mm.
As shown in Fig. 1,2,4, the thickness of described regulation cushion block 3 is 20mm or 40mm or 60mm.
As shown in Figure 1,3, being fixed with pressing plate 8 by screw 13 on described added 5, the cylinder body of described cylinder 9 is fixed on pressure
On plate 8.
As shown in Figure 1,2,3, 4, when the present invention uses, mould preparation sand mold is placed between lower clamp 4 and upper fixture 6.Joint
Stream valve 10 is used for controlling the travel speed of cylinder 9, and the travel speed of cylinder 9 probably controls at about 40mm/s, journey time control
System is at about 5s, and the stroke of cylinder 9 is 150～220mm, if in use the stroke of cylinder 9 is more than 220mm or little
In 150mm, regulation cushion block 3 can be changed between work top 2 and added 5 regulate cylinder 9 by fastening bolt 7 of outwarding winding
Stroke, regulation cushion block 3 changed after again fastening bolt 7 is screwed.Control switch 12 be used for control cylinder 9 advances and after
Moving back, air relief valve 11 is used for controlling the admission pressure of switch 12, and general mould preparation sand mold weight, when 20kg～45g, uses
The pressure of 0.2MPa.
The mould preparation sand mold that weight is 42.1kg such as applies the pressure of 0.2MPa, and the stroke of cylinder 9 is 200mm, stroke
Time is 5s, and travel speed is 40mm/s, removal pressure after pressurize 25min, and sand mold, without buckling deformation, divides by measuring after matched moulds
Profile gap, die joint gap is 0.4mm, in the range of meeting the technical standards (die joint gap after technical standard matched moulds≤
0.5mm), without runout phenomenon in casting process, the foundry goods after unpacking is by measuring casting dimension, casting dimension after ball blast
Meet drawing requirement, thus reach goal of the invention, improve the yield rate of product.
Claims (7)
1. prevent a frock for precoated sand thin-walled sand mold buckling deformation, including undercarriage (1), added (5), lower clamp (4), upper folder
Tool (6) and cylinder (9), described added (5) are fixed on undercarriage (1), and described cylinder (9) is fixed on added (5), and its feature exists
In:
A, described undercarriage (1) have work top (2), and described lower clamp (4) is fixed on work top (2), described upper fixture
(6) fixing with the piston rod (9～1) of cylinder (9) it be connected and arrange face-to-face with lower clamp (4),
B, also include choke valve (10), control switch (12) and air relief valve (11), the air inlet of described choke valve (10) and cylinder (9)
End connects, and the described front end controlling switch (12) is connected with air relief valve (11), rear end respectively with front end and the gas of choke valve (10)
The outlet side of cylinder (9) connects.
The frock of prevention precoated sand thin-walled sand mold buckling deformation the most according to claim 1, it is characterised in that: described added
(5) it is connected by fastening bolt (7) and undercarriage (1) are fixing, between work top (2) and added (5), is lined with regulation cushion block
(3).
The frock of prevention precoated sand thin-walled sand mold buckling deformation the most according to claim 1, it is characterised in that: described control
The front end of switch (12) is connected by trachea with air relief valve (11), rear end pass through trachea respectively with front end and the gas of choke valve (10)
The outlet side of cylinder (9) connects.
The frock of prevention precoated sand thin-walled sand mold buckling deformation the most according to claim 1, it is characterised in that: described control
Switch (12) and air relief valve (11) are installed on added (5).
The frock of prevention precoated sand thin-walled sand mold buckling deformation the most according to claim 1, it is characterised in that: described cylinder
(9) stroke is 150～220mm.
The frock of prevention precoated sand thin-walled sand mold buckling deformation the most according to claim 2, it is characterised in that: described regulation
The thickness of cushion block (3) is 20mm or 40mm or 60mm.
The frock of prevention precoated sand thin-walled sand mold buckling deformation the most according to claim 1, it is characterised in that: described added
(5) being fixed with pressing plate (8) by screw (13) on, the cylinder body of described 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 true CN106077464A (en) | 2016-11-09 |
| CN106077464B 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 |
|---|---|
| CN106077464B (en) | 2018-08-14 |
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| C10 | Entry into substantive examination | ||
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| 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. |
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