CN202621894U - Vacuum sand box for casting large-scale valve bodies - Google Patents
Vacuum sand box for casting large-scale valve bodies Download PDFInfo
- Publication number
- CN202621894U CN202621894U CN 201220285175 CN201220285175U CN202621894U CN 202621894 U CN202621894 U CN 202621894U CN 201220285175 CN201220285175 CN 201220285175 CN 201220285175 U CN201220285175 U CN 201220285175U CN 202621894 U CN202621894 U CN 202621894U
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- China
- Prior art keywords
- boxes
- nowel
- vacuum
- top box
- sand
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a vacuum sand box for casting large-scale valve bodies. The vacuum sand box comprises a lower box and an upper box, wherein both the lower and upper boxes are formed by two overlapped sand boxes; vacuum pumping pipelines are arranged on both opposite side walls of each sand box; the vacuum sand box also comprises a plurality of groups of fixing mechanisms which are located on the same side of the lower and upper boxes and a plurality of groups of positioning mechanisms which are arranged along the joint part between the lower and upper boxes; the vacuum pumping pipelines on one side of the two sand boxes forming the lower and upper boxes are communicated through an air pressure balance pipe; and the vacuum pumping pipelines on the other side are connected with vacuum pumping equipment. According to the utility model, the vacuum pumping pipes of the two sand boxes on the lower and upper boxes are communicated, so that the airflow balance in the two sand boxes is ensured and the deformation of sand moulds is prevented; at the same time, the fixing mechanisms are used for replacing the original iron chains for connection, simplicity and practicability are provided and the operation is convenient; and according to the positioning mechanisms at the joint part between the upper and lower boxes, the positioning during the box combination is ensured and the combination of the upper and lower boxes is steady without displacement phenomenon at the same time.
Description
Technical field
The utility model relates to the sandbox that casting field is used, the vacuum sandbox that a kind of specifically casting large-scale valve body is used.
Background technology
Casting field used upper and lower molds when the casting large-scale valve body is formed by two sandbox stacks, through vaccum-pumping equipment the gas between inner molding sand is extracted out then, and is better with the fineness of cast(ing) surface after the assurance moulding.Prior art all is to bleed simultaneously in relative both sides when vacuumizing, and causes foundry goods out of shape thereby cause inner molding sand may produce certain deformation, influences the quality of foundry goods.Simultaneously, the connection between the upper and lower mould is fixedly connected through iron chains, not only is inconvenient to use, and very easily causes the variation of relative position between the upper and lower molds, influences casting quality.
The utility model content
Problems such as casting quality decline that causes for reasons such as the upper and lower mould that solves the vacuum sandbox that the casting large-scale valve body is used in the prior art be inconvenient to fix, easy displacements and troublesome poeration, the vacuum sandbox that the utility model provides a kind of casting large-scale valve body to use.
The utility model is that the technical scheme that solves the problems of the technologies described above employing is: the vacuum sandbox that a kind of casting large-scale valve body is used; Comprise nowel and top box; Nowel and top box are formed by two sandboxes that stack; And each sandbox is equipped with vacuum lead on the relative two side, also comprises the many groups fixed mechanism that is positioned at nowel and top box the same side and the many groups detent mechanism that is provided with along nowel and top box joint portion, and described fixed mechanism comprises the following fixed block that is arranged on the nowel, is arranged on last fixed block and steady pin on the top box; One end of steady pin is articulated in down on the fixed block, and the other end is connected with last fixed block through clamp nut; Described detent mechanism comprises the following locating piece that is arranged on the nowel, is arranged on last locating piece and alignment pin on the top box, and an end of alignment pin is fixed on down locating piece, and the other end is positioned at the locating hole on the locating piece; The vacuum lead of two sandbox one sides of described composition nowel and top box all is communicated with through the air pressure balance pipeline, and the vacuum lead of opposite side all is connected with vaccum-pumping equipment.
In the utility model, the preferred number of described fixed mechanism is the 2-4 group, and is separately positioned at least two sides of nowel and top box; The preferred number of detent mechanism is a 3-4 group, is arranged on that side that vacuum lead is interconnected.
In the utility model, the effect of air pressure balance pipeline is that two sandboxes forming top box and nowel are communicated with, make its inside everywhere pressure be in poised state, prevent to cause the distortion of sand mo(u)ld because of two sandboxes internal pressure inequality when vacuumizing.
Beneficial effect: the utility model is communicated with through the vacuum lead with two sandboxes on nowel and the top box, makes to prevent the out of shape of sand mo(u)ld by the air balance that two sandboxes are interior; Simultaneously, use fixed mechanism to replace original iron chains to connect, simple and practical, easy to operate, and go up the difficult displacement of nowel; Location when the detent mechanism of last nowel joint portion had both guaranteed mould assembling also makes nowel combine firmly, not produce the displacement phenomenon simultaneously.
Description of drawings
Fig. 1 is the overall structure sketch map of the utility model;
Fig. 2 is the structural representation of detent mechanism;
Fig. 3 is the structural representation of fixed mechanism;
Reference numeral: 1, nowel, 2, detent mechanism, 3, vacuum lead, 4, top box, 5, the air pressure balance pipeline, 6, fixed mechanism;
2-1, time locating piece, 2-2, alignment pin, 2-3, last locating piece, 2-4, locating hole;
6-1, time fixed block, 6-2, steady pin, 6-3, last fixed block, 6-4, clamp nut.
The specific embodiment
As shown in the figure; The vacuum sandbox that a kind of casting large-scale valve body is used; Comprise nowel 1 and top box 4, nowel 1 is formed by two sandboxes that stack with top box 4, and is equipped with vacuum lead 3 on the relative two side of each sandbox; Also comprise 2-4 group fixed mechanism 6 that is positioned at nowel 1 and top box 4 the same sides and the 3-4 group detent mechanism 2 that is provided with along nowel 1 and top box 4 joint portions; Described fixed mechanism 6 comprises the following fixed block 6-1 that is arranged on the nowel 1, is arranged on last fixed block 6-3 and steady pin 6-2 on the top box 4, and the end of steady pin 6-2 is articulated in down on the fixed block 6-1, and the other end is connected with last fixed block 6-3 through clamp nut 6-4; Described detent mechanism 2 comprises the following locating piece 2-1 that is arranged on the nowel 1, is arranged on last locating piece 2-3 and alignment pin 2-2 on the top box 4, and the end of alignment pin 2-2 is fixed on down locating piece 2-1, and the other end is positioned at the locating hole 2-4 on the locating piece 2-3; The vacuum lead 3 of two sandbox one sides of described composition nowel 1 and top box 4 all is communicated with through air pressure balance pipeline 5, and the vacuum lead of opposite side all is connected with vaccum-pumping equipment.
Thereby the top box of the utility model 4 rotates around nowel 1 and accomplishes the mould assembling operation; In the mould assembling process; Alignment pin 2-2 upper end on the nowel 1 is penetrated in the locating hole 2-4 on the last locating piece 2-3 on the top box 4, tighten clamp nut 6-4 then, nowel 1 and top box 4 are combined closely; Can extract in nowels 1 and the top box 4 residual gas in the sand mo(u)lds through vacuum lead 3 then, promptly pourable after being drawn into to a certain degree.
Claims (2)
1. vacuum sandbox that the casting large-scale valve body is used; Comprise nowel (1) and top box (4); Nowel (1) and top box (4) are formed by two sandboxes that stack; And each sandbox is equipped with vacuum lead (3) on the relative two side; It is characterized in that: also comprise the many groups fixed mechanism (6) that is positioned at nowel (1) and top box (4) the same side and the many groups detent mechanism (2) that is provided with along nowel (1) and top box (4) joint portion; Described fixed mechanism (6) comprises the following fixed block (6-1) that is arranged on the nowel (1), is arranged on last fixed block (6-3) and steady pin (6-2) on the top box (4), and an end of steady pin (6-2) is articulated in down on the fixed block (6-1), and the other end is connected with last fixed block (6-3) through clamp nut (6-4); Described detent mechanism (2) comprises the following locating piece (2-1) that is arranged on the nowel (1), is arranged on last locating piece (2-3) and alignment pin (2-2) on the top box (4); One end of alignment pin (2-2) is fixed on down locating piece (2-1), and the other end is positioned at the locating hole (2-4) on the locating piece (2-3); The vacuum lead (3) of two sandbox one sides of described composition nowel (1) and top box (4) all is communicated with through air pressure balance pipeline (5), and the vacuum lead of opposite side all is connected with vaccum-pumping equipment.
2. the vacuum sandbox that a kind of casting large-scale valve body according to claim 1 is used is characterized in that: the number of described fixed mechanism (6) is the 2-4 group, and the number of detent mechanism (2) is the 3-4 group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220285175 CN202621894U (en) | 2012-06-18 | 2012-06-18 | Vacuum sand box for casting large-scale valve bodies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220285175 CN202621894U (en) | 2012-06-18 | 2012-06-18 | Vacuum sand box for casting large-scale valve bodies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202621894U true CN202621894U (en) | 2012-12-26 |
Family
ID=47375137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220285175 Expired - Fee Related CN202621894U (en) | 2012-06-18 | 2012-06-18 | Vacuum sand box for casting large-scale valve bodies |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202621894U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104942235A (en) * | 2014-03-24 | 2015-09-30 | 韩金福 | Box stacking and pouring technical method for automobile brake disc |
-
2012
- 2012-06-18 CN CN 201220285175 patent/CN202621894U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104942235A (en) * | 2014-03-24 | 2015-09-30 | 韩金福 | Box stacking and pouring technical method for automobile brake disc |
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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 |
Granted publication date: 20121226 Termination date: 20170618 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |