CN202655575U - Sand frame used for covering sand on iron pattern - Google Patents
Sand frame used for covering sand on iron pattern Download PDFInfo
- Publication number
- CN202655575U CN202655575U CN 201220369847 CN201220369847U CN202655575U CN 202655575 U CN202655575 U CN 202655575U CN 201220369847 CN201220369847 CN 201220369847 CN 201220369847 U CN201220369847 U CN 201220369847U CN 202655575 U CN202655575 U CN 202655575U
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- Prior art keywords
- undersurface
- sand
- sand frame
- model cavity
- frame body
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- Expired - Fee Related
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Abstract
Disclosed is a sand frame used for covering sand on an iron pattern. The sand frame used for covering sand on the iron pattern includes a sand frame body (1), wherein the sand frame body (1) is provided with a model cavity (2), and raised lines (3) are arranged at both sides of the sand frame body (1). The undersurface of the model cavity (2) includes a first undersurface (2.1) and a second undersurface (2.2), wherein the first undersurface (2.1) is the part of the undersurface of the model cavity (2) near the raised lines (3). The distance between the first undersurface (2.1) and the opening of the model cavity (2) is smaller than the distance between the second undersurface (2.2) and the opening of the model cavity (2). Compared with the prior art, as the sand frame used for covering sand on the iron pattern adopts the structure that the undersurface of the model cavity (2) includes the first undersurface (2.1) and the second undersurface (2.2), the first undersurface (2.1) is the part of the undersurface of the model cavity (2) near the raised lines (3), and the distance between the first undersurface (2.1) and the opening of the model cavity (2) is smaller than the distance between the second undersurface (2.2) and the opening of the model cavity (2), the sand frame used for covering sand on the iron pattern enables the cooling speed on a corresponding part of the first undersurface (2.1) to be reduced in casting process, and therefore the cooling of the whole undersurface is uniform, the defect of casting contraction is overcome, and then the high rate of finished products in production is achieved.
Description
Technical field
The utility model relates to a kind of device for sand coated iron mould sand frame.
Background technology
At present, the device for sand coated iron mould of prior art comprises sand frame body with the sand frame, and sand frame body is provided with four die cavities, and the both sides of sand frame body are provided with raised line, but because the bottom surface of die cavity is the plane, and after the core moulding, in the end during moulding by casting, cooling easily appears in the die cavity bottom surface portions when cast inhomogeneous, the part of the nearly raised line in bottom surface cooling rate when cast is very fast, the defective of contraction easily occurs, shrinkage cavity namely easily occurs, yield rate is lower, and production cost is higher.
The utility model content
The bottom surface cooling rate was even when the utility model provided a kind of cast for above problem, was difficult for shrinking, so that the device for sand coated iron mould that casting yield is higher and production cost is lower sand frame.
The utility model overcomes the above problems used technical scheme: a kind of sand frame of device for sand coated iron mould with following structure is provided, it comprises sand frame body, described sand frame body is provided with die cavity, and the both sides of sand frame body are provided with raised line, the bottom surface of described die cavity is divided into the first bottom surface and second bottom surface two parts, described the first bottom surface is the part of the nearly raised line in die cavity bottom surface, and the distance between described the first bottom surface and the die cavity opening is less than the distance between the second bottom surface and the die cavity opening.
After adopting above structure, compared with prior art, the utility model is because the bottom surface of die cavity is divided into the first bottom surface and second bottom surface two parts, the first bottom surface is the part of the nearly raised line in die cavity bottom surface, distance between the first bottom surface and the die cavity opening is less than the distance between the second bottom surface and the die cavity opening, this structure so that in when cast then, part cooling rate corresponding to the first bottom surface reduces, so that the cooling of whole bottom surface is more even, be not prone to the defective of the contraction of cast, and then so that when producing the yield rate of product higher.The bottom surface cooling rate is even when therefore the utlity model has cast, is difficult for shrinking, so that the characteristics that casting yield is higher and production cost is lower.
As improvement, be provided with chamfered transition between described the first bottom surface and the second bottom surface, then after the first bottom surface and the second underrun chamfered transition, when the demoulding, be easier to the demoulding during than the transition of original right angle, therefore demoulding efficiency is higher, and then can make production efficiency of the present utility model higher, production cost is lower.
Description of drawings
Fig. 1 is the structural representation that the utility model device for sand coated iron mould is used the sand frame.
Fig. 2 is the cutaway view along A-A line among Fig. 1.
As shown in the figure: 1, sand frame body, 2, die cavity, the 2.1, first bottom surface, the 2.2, second bottom surface, 2.3, the inclined-plane, 3, raised line.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
A kind of device for sand coated iron mould sand frame as depicted in figs. 1 and 2, it comprises that sand frame body 1(also comprises other parts certainly, but owing to not relating to the inventive point of the invention, therefore do not repeat them here), described sand frame body 1 is provided with die cavity 2, general sand frame body 1 is provided with four square die cavities 2, and the both sides of sand frame body 1 are provided with raised line 3, the bottom surface of described die cavity 2 is divided into the first bottom surface 2.1 and the second bottom surface 2.2 two parts, the line of demarcation is parallel with the length direction of raised line 3 between the first bottom surface 2.1 and the second bottom surface 2.2, described the first bottom surface 2.1 is the part of the nearly raised line 3 in die cavity 2 bottom surfaces, distance between described the first bottom surface 2.1 and die cavity 2 openings is less than the distance between the second bottom surface 2.2 and die cavity 2 openings, also can be regarded as the first bottom surface 2.1 and arrive the distance of sand frame body 1 bottom surface to the distance of sand frame body 1 bottom surface greater than the second bottom surface 2.2, the bottom surface that namely also can be regarded as die cavity 2 is provided with step.
Be provided with inclined-plane 2.3 transition between described the first bottom surface 2.1 and the second bottom surface 2.2.
Above embodiment only is preferred embodiment of the present utility model, and the utility model is not limited only to above embodiment and has also allowed other structural change, allly changes in the utility model rights to independence claimed range, all belongs to the utility model protection domain.
Claims (2)
1. device for sand coated iron mould sand frame, it comprises sand frame body (1), described sand frame body (1) is provided with die cavity (2), and the both sides of sand frame body (1) are provided with raised line (3), it is characterized in that: the bottom surface of described die cavity (2) is divided into the first bottom surface (2.1) and the second bottom surface (2.2) two parts, described the first bottom surface (2.1) is the part of the nearly raised line in die cavity (2) bottom surface (3), and the distance between described the first bottom surface (2.1) and die cavity (2) opening is less than the distance between the second bottom surface (2.2) and die cavity (2) opening.
2. device for sand coated iron mould according to claim 1 sand frame is characterized in that: be provided with inclined-plane (2.3) transition between described the first bottom surface (2.1) and the second bottom surface (2.2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220369847 CN202655575U (en) | 2012-07-30 | 2012-07-30 | Sand frame used for covering sand on iron pattern |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220369847 CN202655575U (en) | 2012-07-30 | 2012-07-30 | Sand frame used for covering sand on iron pattern |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202655575U true CN202655575U (en) | 2013-01-09 |
Family
ID=47450508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220369847 Expired - Fee Related CN202655575U (en) | 2012-07-30 | 2012-07-30 | Sand frame used for covering sand on iron pattern |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202655575U (en) |
-
2012
- 2012-07-30 CN CN 201220369847 patent/CN202655575U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130109 Termination date: 20160730 |