CN203437596U - Laminating sand core and casting mold for forming pump impeller and mold for forming laminating sand core insert - Google Patents
Laminating sand core and casting mold for forming pump impeller and mold for forming laminating sand core insert Download PDFInfo
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- CN203437596U CN203437596U CN201320421030.0U CN201320421030U CN203437596U CN 203437596 U CN203437596 U CN 203437596U CN 201320421030 U CN201320421030 U CN 201320421030U CN 203437596 U CN203437596 U CN 203437596U
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Abstract
The utility model discloses a laminating sand core and a casting mold for forming a pump impeller and a mold for forming a laminating sand core insert. The laminating sand core adopts a combined structure spliced by peripherally arranging laminating sand core inserts formed by an independent cavity of the mold and having the same number as blades of the impeller, wherein impeller blade cavities are formed between combined surfaces of adjacent two laminating sand core inserts; closed inner rings are formed inwards from the smallest inner diameter of the impeller blade cavities; closed outer rings are formed outwards from the largest outer diameter of the impeller blade cavities; the inner rings are equally divided by intersecting ring centers with peripheral surfaces of the smallest inner diameter of the impeller blade cavities; the outer rings are equally divided by intersecting ring centers with peripheral surface of the largest outer diameter of the impeller blade cavities; and inner holes of the inner rings are first locating holes for mounting sand core bars for forming wheel hub shaft holes. The laminating sand core has the advantages of high precision of the blade cavities, smooth surfaces of the cavities, difficulty of generating casting defects such as hole shrinkage, looseness and air holes, low casting defective index and feasibility of forming impellers with blades as complex space torsion bodies.
Description
Technical field
The utility model relates to the mould of a kind of precoated sand core of moulding impeller of pump of the every field that is widely used in the national economy such as oil, chemical industry, electric power, metallurgy, coal, environmental protection, shipbuilding, food, medicine, urban construction, communications and transportation, civilian and irrigation and water conservancy and casting die, moulding precoated sand core mold insert, particularly relates to the mould of a kind of precoated sand core of moulding water pump vane and casting die, moulding precoated sand core mold insert.
Background technology
Impeller plays a part very important to the combination property of whole equipment as the core component of pump, impeller is generally comprised of front shroud, wheel hub and blade, and cover plate belongs to revolving body, the spatial warping body that blade is normally complicated.Close impeller is comprised of front shroud, back shroud, wheel hub and blade.
Sand casting is the common method of manufacturing impeller.What the casting die of existing moulding impeller of pump was used covers sand core for integral type structure.In the application number utility model patent that is 201020646072.0, a kind of metal gravity type casting mould of water pump impeller is disclosed, a kind of metal gravity type casting mould of water pump impeller, comprise counterdie, core post, core, counterdie center is provided with core post, the top of core post is provided with core with matching, core top is provided with patrix, patrix is provided with counterdie the groove coordinating with core, in groove, be provided with running channel, patrix is provided with the several rising heads that lead to groove, patrix upper surface Feed ring edge is provided with heat-insulation layer, patrix consists of two and half templates, it is symmetrical that two and half templates form Hough, running channel adopts bottom filling.The core of the metal gravity type casting mould of the moulding water pump vane of this structure is exactly integral structure.First need to cover sand core by special-purpose mould molding.Moulding integral type cover sand core time, need first the impeller blade mould processing to be placed in mould, due to the long narrow distortion of impeller blade mould shape, from integral type cover the molding of sand core time the impeller blade mould of need vacillating now to the left, now to the right could take out, while shaking impeller blade mould, part molding sand can come off, when sand core is covered in taking-up, can take part molding sand out of, this can make the die cavity and the impeller blade mould that cover sand core moulding impeller blade larger error.Bothersome effort while taking out impeller blade mould.The impeller of pump forming out with this casting die that covers sand core that comprises integral type, the actual size that the blade of impeller of pump is cast out and shape and former design size and shape have larger error, the precision of the blade of impeller of pump is low, blade surface is not bright and clean, easily produce shrinkage cavity, loose, the casting flaws such as pore, foundary loss rate is high.
Application number is, in 201020212927.9 utility model, to disclose a kind of forward skewed multi-blade impeller with narrow cavity cast-in-block impeller inner core mould that possesses low noise characteristic for centrifugal blower.Include discoidal model basal disc, model basal disc middle ends face one side is installed the movable reel of impeller shunting section model arc cone, the nearly periphery card of model basal disc offers the blade perforation of circular arc, blade perforation is along circumferentially laying, in blade perforation, be fitted with moving vane model, form impeller inner core mould.The moving vane model of the monolithic of this utility model processes with line cutting Digit Control Machine Tool.This utility model, although impeller inner core mould is formed by a plurality of moving vane models, forms impeller inner core mould for moving vane model group is combined, and also needs model basal disc; Also need movable axis disc molding impeller hub.Impeller inner core mould in this utility model, is comprised of model basal disc, moving vane model, model basal disc, and member is many, and complex structure, during installation fee, is placed in casting die and is not easy to locate.The impeller inner core mould of this structure, easy-formation blade is not the impeller of complicated spatial warping body.
Summary of the invention
First technical problem that the present invention will solve is, provides actual size and shape and the former design size that a kind of blade that does not need impeller blade mould, impeller of pump casts out and the precoated sand core of the moulding impeller of pump that the casting flaw such as form error is little, the precision of blades of impeller of pump is high, blade surface is bright and clean, be not easy to produce shrinkage cavity, loose, pore, foundary loss rate are low, simple in structure.
Second technical problem that the present invention will solve be, provides actual size and shape and the former design size that a kind of blade of impeller of pump casts out and the casting flaw such as form error is little, the precision of blades of impeller of pump is high, blade surface is bright and clean, be not easy to produce shrinkage cavity, loose, pore, foundary loss rate are low, simple in structure, cover the casting die of the moulding impeller of pump that sand core has good positioning in impeller casting die.
The 3rd technical problem that the present invention will solve is that the mould of the moulding precoated sand core mold insert that a kind of precoated sand core mold insert precision is high, surface smoothness is good is provided.
Impeller of pump cover a sand core, covering sand core is fabricated structure, by identical with impeller blade number by mould independence mold cavity forming cover sand core mold insert in the same direction circumferential array splicing form; That combines adjacent two covers between sand core mold insert faying face and forms impeller blade die cavity.
As improvement, combine to cover sand core insert structure identical, with the minimum diameter of impeller blade die cavity inwardly form closed in ring, with the maximum outside diameter of impeller blade die cavity, outwards form closed outer shroud; The end face of outer shroud and bottom surface flush with impeller blade die cavity end face and the bottom surface of maximum outside diameter respectively; Interior ring intersects decile with the side face of the minimum diameter of the ring heart and impeller blade die cavity, and outer shroud intersects decile with the maximum outside diameter side face of the ring heart and impeller blade die cavity, thereby form each, covers sand core mold insert; The endoporus of interior ring is the first locating hole for the core rod of installation forming wheel hub axis hole.
As another improvement, cover sand core and be and cover sand core for moulding enclosed type impeller of water pump; Covering sand core outer shroud forms and is used for first forming surface of moulding front shroud towards the face of back shroud with the face making progress beyond interior and interior ring; The second forming surface that forms moulding front shroud endoporus is divided in interior ring outer peripheral face bottom, and top is divided into be stretched into sandbox and be used for location and cover the first location division of sand core; Cover the outer shroud of sand core for coordinate the second location division of covering sand core for location with lower sandbox; Covering sand core outer shroud forms and is used for moulding back shroud and wheel hub the 3rd forming surface towards the face of front shroud with face downward beyond interior and the first locating hole.
A kind of casting die that comprises the moulding impeller of pump that covers sand core; casting die also comprises the core rod of sandbox, lower sandbox and moulding wheel hub axis hole; in upper sandbox, be provided with the upper impression for moulding impeller of pump; in lower sandbox, be provided with the lower impressions for moulding impeller of pump; cover the desired location that desired location, core rod that sand core is arranged on upper impression and lower impressions are arranged on lower impressions and/or cover sand core, cover sand core, core rod forms impeller impression with upper sandbox and lower sandbox.
As improvement, combine to cover sand core insert structure identical, with the minimum diameter of impeller blade die cavity inwardly form closed in ring, with the maximum outside diameter of impeller blade die cavity, outwards form closed outer shroud; The end face of outer shroud and bottom surface flush with impeller blade die cavity end face and the bottom surface of maximum outside diameter respectively; The bottom surface of interior ring flushes with the end face of wheel hub, and the end face of interior ring protrudes impeller inlet face; Interior ring intersects decile with the side face of the minimum diameter of the ring heart and impeller blade die cavity, and outer shroud intersects decile with the maximum outside diameter side face of the ring heart and impeller blade die cavity, thereby form each, covers sand core mold insert; The endoporus of interior ring is the first locating hole for the core rod of installation forming wheel hub axis hole; In upper impression, be provided with the interior ring top of covering sand core divide cooperation, with the second locating hole being communicated with at the bottom of upper impression chamber, in lower impressions, being provided with the bottom surface coordinating with outer shroud is ring-type the 3rd locating hole; Core rod is arranged in the first locating hole, covers sand core and by outer shroud, is arranged in the 3rd locating hole, on interior ring part and stretches in the second locating hole core rod, cover sand core and be arranged in upper sandbox and lower sandbox.
As another improvement, cover sand core and be and cover sand core for moulding enclosed type impeller of water pump; Covering sand core outer shroud forms and is used for first forming surface of moulding front shroud towards the face of back shroud with the face making progress beyond interior and interior ring; The second forming surface that forms moulding front shroud endoporus is divided in interior ring outer peripheral face bottom, and top is divided into be stretched into sandbox and be used for location and cover the first location division of sand core; Cover the outer shroud of sand core for coordinate the second location division of covering sand core for location with lower sandbox; Covering sand core outer shroud forms and is used for moulding back shroud and wheel hub the 3rd forming surface towards the face of front shroud with face downward beyond interior and the first locating hole; For being used for moulding front shroud, deviate from the first cavity surface of the face of back shroud beyond upper impression the second locating hole, the interior ring of lower impressions the 3rd locating hole bottom surface be take and interiorly as being used for moulding back shroud, wheel hub, deviated from the second cavity surface of face and the impeller ring of front shroud; At the bottom of the chamber of lower impressions, center is also provided with the 4th locating hole coordinating with core rod.
A mould for sand core mold insert is covered in moulding, comprises dynamic model assembly and cover half assembly, and what in dynamic model assembly and cover half assembly, be provided with that more than one every of moulding covers sand core mold insert independently covers sand core insert-type chamber.
As improvement, cover sand core and be and cover sand core for moulding enclosed type impeller of water pump; Combine to cover sand core insert structure identical, with the minimum diameter of impeller blade die cavity inwardly form closed in ring, with the maximum outside diameter of impeller blade die cavity, outwards form closed outer shroud; The end face of outer shroud and bottom surface flush with impeller blade die cavity end face and the bottom surface of maximum outside diameter respectively; The bottom surface of interior ring flushes with the end face of wheel hub, and the end face of interior ring protrudes impeller inlet face; Interior ring intersects decile with the side face of the minimum diameter of the ring heart and impeller blade die cavity, and outer shroud intersects decile with the maximum outside diameter side face of the ring heart and impeller blade die cavity, thereby form each, covers sand core mold insert; The endoporus of interior ring is the first locating hole for the core rod of installation forming wheel hub axis hole; Covering sand core outer shroud forms and is used for first forming surface of moulding front shroud towards the face of back shroud with the face making progress beyond interior and interior ring; The second forming surface that forms moulding front shroud endoporus is divided in interior ring outer peripheral face bottom, and top is divided into be stretched into sandbox and be used for location and cover the first location division of sand core; Cover the outer shroud of sand core for coordinate the second location division of covering sand core for location with lower sandbox; Covering sand core outer shroud forms and is used for moulding back shroud and wheel hub the 3rd forming surface towards the face of front shroud with face downward beyond interior and the first locating hole; Independently covering sand core insert-type chamber is molded in the moving platen of dynamic model assembly and in the solid plate of cover half assembly; Moving platen and solid plate be take and be used for the outer shroud that moulding covers sand core mold insert and cross the first faying face that the decile face in the center of circle is moving platen and solid plate, and be separated by interior of take encircled the second faying face that the decile face in the center of circle is moving platen and solid plate; The first die joint between the first faying face and the second faying face flushes with the 4th forming surface that the end face of sand core mold insert outer shroud is covered in moulding in moving platen, and the second die joint beyond the first die joint flushes with the fifty percentth profile that the bottom surface of sand core mold insert outer shroud is covered in moulding in solid plate.The die joint of this structure, mold cavity is easy to process, and dynamic model and cover half are worked good at die joint place and faying face place.
As further improvement, on the first die joint, be provided with sand shot mouth and steam vent, penetrate sand effective, easy to process.
The beneficial effects of the utility model are, use this knockdown sand core that covers, the blade die cavity of impeller of pump directly forms by covering sand core mold insert, do not need impeller blade mould, the precision of blade die cavity is high, and the casting flaws such as the actual size that the blade of impeller of pump is cast out and shape and former design size and form error is little, the precision of blades of impeller of pump is high, blade surface is bright and clean, be not easy to produce shrinkage cavity, loose, pore, foundary loss rate are low.Cover sand core and only by covering sand core mold insert, form, simple in structure, cover sand core and have good positioning in impeller casting die, easy-formation blade is the impeller of complicated spatial warping body.Owing to locating with outer shroud and interior ring and sand core mold insert is covered in splicing, cover sand core easy to assembly, the impeller blade die cavity precision of formation is high, cover sand core in casting die, locate convenient.Covering model sand mold in-core moulding locating hole, be convenient to the location for the core rod of moulding wheel hub axis hole.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of the utility model embodiment 1.
Fig. 2 is that the utility model embodiment 1 is from the schematic perspective view of another direction projection.
Fig. 3 is the perspective exploded view that the utility model embodiment 2 comprises impeller of pump.
Fig. 4 is that the utility model embodiment 2 is from the schematic perspective view of another direction projection.
Fig. 5 is the three-dimensional cutaway view that the utility model embodiment 2 dissects from impeller impression shaft core position.
Fig. 6 is that the utility model embodiment 3 comprises the perspective exploded view of covering sand core mold insert.
Fig. 7 is that the utility model embodiment 3 comprises the perspective exploded view from another direction projection of covering sand core mold insert.
The specific embodiment
As shown in Figure 1 and Figure 2, a kind of moulding enclosed type impeller of water pump cover sand core, be fabricated structure, the sand core mold insert 1 that covers identical by the structure by mould independence mold cavity forming identical with impeller blade number, circumferential array in the same direction forms.That combines adjacent two covers between sand core mold insert 1 faying face and forms impeller blade die cavity 2.Combine cover sand core mold insert 1 minimum diameter with impeller blade die cavity 2 inwardly form closed in ring 3, with the maximum outside diameter of impeller blade die cavity 2, outwards form closed outer shroud 4.The end face of outer shroud 4 and bottom surface flush with impeller blade die cavity 2 end faces and the bottom surface of maximum outside diameter respectively.The bottom surface of interior ring 3 flushes with the end face of wheel hub, and the end face of interior ring protrudes impeller inlet face.Interior ring 3 intersects decile with the side face of the minimum diameter of the ring heart and impeller blade die cavity 2, and outer shroud 4 intersects decile with the maximum outside diameter side face of the ring heart and impeller blade die cavity 2, thereby form each, covers sand core mold insert 1.The endoporus of interior ring is the first locating hole 5 for the core rod of installation forming wheel hub axis hole.Covering sand core outer shroud 4 forms and is used for first forming surface 6 of moulding front shroud towards the face of back shroud with the face making progress beyond interior and interior ring 3; The second forming surface that forms moulding front shroud endoporus is divided in interior ring 3 outer peripheral face 7 bottoms, and top is divided into be stretched into sandbox and be used for location and cover the first location division of sand core; Cover the outer shroud 4 of sand core for coordinate the second location division of covering sand core for location with lower sandbox; Covering sand core outer shroud 4 forms and is used for moulding back shroud and wheel hub the 3rd forming surface 8 towards the face of front shroud with face downward beyond interior and the first locating hole.
As shown in Figures 3 to 5, a kind of casting die of moulding impeller of pump 19, comprises sandbox 20, lower sandbox 21, covers sand core 22, the core rod 23 of moulding wheel hub axis hole.The structure of covering sand core 22 is identical with embodiment 1.In upper sandbox 20, be provided with the upper impression 24 for moulding impeller of pump, in lower sandbox 21, be provided with the lower impressions 25 for moulding impeller of pump.
In upper impression 24, be provided with interior ring 26 tops of covering sand core 22 divide cooperation, with the second locating hole 27 being communicated with at the bottom of upper impression 24 chambeies, in lower impressions 25, being provided with the bottom surface coordinating with outer shroud 28 is ring-type the 3rd locating hole 29.Beyond upper impression 24 second locating holes 27, for being used for moulding front shroud, deviate from the first cavity surface of the face of back shroud, the interior ring 26 of lower impressions 25 the 3rd locating hole 29 bottom surfaces be take and interiorly as being used for moulding back shroud, wheel hub, deviated from the second cavity surface of face and the impeller ring of front shroud.At the bottom of the chamber of lower impressions 25, center is also provided with and core rod 23 the 4th locating holes 30 that coordinate.Core rod 23 is arranged in the first locating hole, cover sand core 22 and by outer shroud 28, be arranged on that part in the 3rd locating hole 29, on interior ring 26 stretches in the second locating hole 27, excellent 23 lower ends of core are stretched in the 4th locating hole 30, by core rod 23, cover sand core 22 and be arranged in upper sandbox 20 and lower sandbox 21, thereby form impeller impression.
As shown in Figure 6, Figure 7, covering sand core mold insert 40, covering the mould of sand core mold insert 41 of sand core covered in a kind of moulding, comprises dynamic model assembly 42 and cover half assembly 49.Dynamic model assembly 42 comprises moving platen 43, and cover half assembly 49 comprises solid plate 44.In solid plate 44, be provided with moulding cover sand core mold insert 40 independently cover that sand core insert-type chamber 45, moulding cover sand core mold insert 41 independently cover sand core insert-type chamber 46.In moving platen 43, be provided with moulding cover sand core mold insert 40 independently cover that sand core insert-type chamber 47, moulding cover sand core mold insert 41 independently cover sand core insert-type chamber 48.Moving platen 43 and solid plate 44 be take and be used for part outer shroud 50 that moulding covers sand core mold insert 40 and cross the first faying face 52 that the decile face 51 in the centers of circle be moving platen 43 and solid plate 44, take and encircle the second faying faces 53 that the decile faces 63 in the 64 mistake centers of circle are moving platen 43 and solid plate 44 in the part of being separated by.53 of the first faying face 52 and the second faying faces the first die joint 54 the 4th forming surface 56 of covering the end face 55 of sand core mold insert 40 part outer shrouds 50 with the interior moulding of moving platen 43 flush, the fifty percentth profile 59 that the second die joint 57 beyond the first die joint 54 covers the bottom surface 58 of sand core mold insert 40 part outer shrouds 50 with the interior moulding of solid plate 44 flushes.
On the first die joint 54, be provided with sand shot mouth 60 and steam vent 61.
Claims (9)
- Moulding impeller of pump cover sand core, it is characterized in that: the described sand core that covers is fabricated structure, by identical with impeller blade number by mould independence mold cavity forming cover sand core mold insert in the same direction circumferential array splicing form; That combines adjacent two covers between sand core mold insert faying face and forms impeller blade die cavity.
- 2. moulding impeller of pump as claimed in claim 1 covers sand core, it is characterized in that: combine to cover sand core insert structure identical, with the minimum diameter of impeller blade die cavity inwardly form closed in ring, with the maximum outside diameter of impeller blade die cavity, outwards form closed outer shroud; The end face of outer shroud and bottom surface flush with described impeller blade die cavity end face and the bottom surface of maximum outside diameter respectively; Interior ring intersects decile with the side face of the minimum diameter of the ring heart and described impeller blade die cavity, and outer shroud intersects decile with the maximum outside diameter side face of the ring heart and described impeller blade die cavity, thereby form described each, covers sand core mold insert; The endoporus of interior ring is the first locating hole for the core rod of installation forming wheel hub axis hole.
- Moulding impeller of pump as claimed in claim 2 cover sand core, it is characterized in that: the described sand core that covers is to cover sand core for moulding enclosed type impeller of water pump; Covering sand core outer shroud forms and is used for first forming surface of moulding front shroud towards the face of back shroud with the face making progress beyond interior and interior ring; The second forming surface that forms moulding front shroud endoporus is divided in interior ring outer peripheral face bottom, and top is divided into be stretched into sandbox and be used for location and cover the first location division of sand core; Cover the outer shroud of sand core for coordinate the second location division of covering sand core for location with lower sandbox; Covering sand core outer shroud forms and is used for moulding back shroud and wheel hub the 3rd forming surface towards the face of front shroud with face downward beyond interior and the first locating hole.
- 4. one kind comprises the casting die that covers the moulding impeller of pump of sand core as claimed in claim 1; it is characterized in that: described casting die also comprises the core rod of sandbox, lower sandbox and moulding wheel hub axis hole; in upper sandbox, be provided with the upper impression for moulding impeller of pump; in lower sandbox, be provided with the lower impressions for moulding impeller of pump; describedly cover the desired location that desired location, described core rod that sand core is arranged on upper impression and lower impressions are arranged on lower impressions and/or cover sand core, cover sand core, core rod forms impeller impression with upper sandbox and lower sandbox.
- 5. the casting die of moulding impeller of pump as claimed in claim 4, it is characterized in that: combine to cover sand core insert structure identical, with the minimum diameter of impeller blade die cavity inwardly form closed in ring, with the maximum outside diameter of impeller blade die cavity, outwards form closed outer shroud; The end face of outer shroud and bottom surface flush with described impeller blade die cavity end face and the bottom surface of maximum outside diameter respectively; The bottom surface of interior ring flushes with the end face of wheel hub, and the end face of interior ring protrudes impeller inlet face; Interior ring intersects decile with the side face of the minimum diameter of the ring heart and described impeller blade die cavity, and outer shroud intersects decile with the maximum outside diameter side face of the ring heart and described impeller blade die cavity, thereby form described each, covers sand core mold insert; The endoporus of interior ring is the first locating hole for the core rod of installation forming wheel hub axis hole; In upper impression, be provided with the interior ring top of covering sand core divide cooperation, with the second locating hole being communicated with at the bottom of upper impression chamber, in lower impressions, being provided with the bottom surface coordinating with outer shroud is ring-type the 3rd locating hole; Core rod is arranged in the first locating hole, covers sand core and by outer shroud, is arranged in the 3rd locating hole, on interior ring part and stretches in the second locating hole core rod, cover sand core and be arranged in upper sandbox and lower sandbox.
- 6. the casting die of moulding impeller of pump as claimed in claim 5, is characterized in that: the described sand core that covers is to cover sand core for moulding enclosed type impeller of water pump; Covering sand core outer shroud forms and is used for first forming surface of moulding front shroud towards the face of back shroud with the face making progress beyond interior and interior ring; The second forming surface that forms moulding front shroud endoporus is divided in interior ring outer peripheral face bottom, and top is divided into be stretched into sandbox and be used for location and cover the first location division of sand core; Cover the outer shroud of sand core for coordinate the second location division of covering sand core for location with lower sandbox; Covering sand core outer shroud forms and is used for moulding back shroud and wheel hub the 3rd forming surface towards the face of front shroud with face downward beyond interior and the first locating hole; For being used for moulding front shroud, deviate from the first cavity surface of the face of back shroud beyond upper impression the second locating hole, the interior ring of lower impressions the 3rd locating hole bottom surface be take and interiorly as being used for moulding back shroud, wheel hub, deviated from the second cavity surface of face and the impeller ring of front shroud; At the bottom of the chamber of lower impressions, center is also provided with the 4th locating hole coordinating with core rod.
- 7. a moulding mould that covers sand core mold insert that covers sand core as claimed in claim 1, comprise dynamic model assembly and cover half assembly, it is characterized in that: what in dynamic model assembly and cover half assembly, be provided with that more than one every of moulding covers sand core mold insert independently covers sand core insert-type chamber.
- 8. the mould of sand core mold insert is covered in a kind of moulding as claimed in claim 7, it is characterized in that: the described sand core that covers is to cover sand core for moulding enclosed type impeller of water pump; Combine to cover sand core insert structure identical, with the minimum diameter of impeller blade die cavity inwardly form closed in ring, with the maximum outside diameter of impeller blade die cavity, outwards form closed outer shroud; The end face of outer shroud and bottom surface flush with described impeller blade die cavity end face and the bottom surface of maximum outside diameter respectively; The bottom surface of interior ring flushes with the end face of wheel hub, and the end face of interior ring protrudes impeller inlet face; Interior ring intersects decile with the side face of the minimum diameter of the ring heart and described impeller blade die cavity, and outer shroud intersects decile with the maximum outside diameter side face of the ring heart and described impeller blade die cavity, thereby form described each, covers sand core mold insert; The endoporus of interior ring is the first locating hole for the core rod of installation forming wheel hub axis hole; Covering sand core outer shroud forms and is used for first forming surface of moulding front shroud towards the face of back shroud with the face making progress beyond interior and interior ring; The second forming surface that forms moulding front shroud endoporus is divided in interior ring outer peripheral face bottom, and top is divided into be stretched into sandbox and be used for location and cover the first location division of sand core; Cover the outer shroud of sand core for coordinate the second location division of covering sand core for location with lower sandbox; Covering sand core outer shroud forms and is used for moulding back shroud and wheel hub the 3rd forming surface towards the face of front shroud with face downward beyond interior and the first locating hole; Independently covering sand core insert-type chamber is molded in the moving platen of dynamic model assembly and in the solid plate of cover half assembly; Moving platen and solid plate be take and be used for the outer shroud that moulding covers sand core mold insert and cross the first faying face that the decile face in the center of circle is moving platen and solid plate, and be separated by interior of take encircled the second faying face that the decile face in the center of circle is moving platen and solid plate; The first die joint between the first faying face and the second faying face and moulding in moving platen are covered the 4th forming surface that sand covers the end face of sand core mold insert outer shroud and are flushed, and the second die joint beyond the first die joint flushes with the fifty percentth profile that the bottom surface of sand core mold insert outer shroud is covered in the interior moulding of solid plate.
- 9. the mould of sand core mold insert is covered in a kind of moulding as claimed in claim 8, it is characterized in that: on the first die joint, be provided with and be used for moulding and cover sand shot mouth and the steam vent that the sixty percentth profile of the outer shroud outer peripheral face of sand core mold insert is communicated with.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320421030.0U CN203437596U (en) | 2013-07-15 | 2013-07-15 | Laminating sand core and casting mold for forming pump impeller and mold for forming laminating sand core insert |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320421030.0U CN203437596U (en) | 2013-07-15 | 2013-07-15 | Laminating sand core and casting mold for forming pump impeller and mold for forming laminating sand core insert |
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| CN203437596U true CN203437596U (en) | 2014-02-19 |
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2013
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