CN212884851U - Cold core box with downward large disk for producing bell mouth sand core for nodular cast iron pipe - Google Patents
Cold core box with downward large disk for producing bell mouth sand core for nodular cast iron pipe Download PDFInfo
- Publication number
- CN212884851U CN212884851U CN202020965182.7U CN202020965182U CN212884851U CN 212884851 U CN212884851 U CN 212884851U CN 202020965182 U CN202020965182 U CN 202020965182U CN 212884851 U CN212884851 U CN 212884851U
- Authority
- CN
- China
- Prior art keywords
- core
- sand
- die
- cold
- plate
- Prior art date
- 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.)
- Active
Links
Images
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The utility model relates to a big dish down formula is used for producing cold core box of bellmouth psammitolite for nodular cast iron pipe belongs to cold core box mould field. The utility model discloses a lower mould, mold core and external mold all cooperate with the lower mould, form the die cavity between lower mould, mold core and the external mold, its structural feature lies in: the diameter of die cavity from top to bottom increases in proper order, the cold-box still includes the inlay circle, the inlay circle is installed on the external mold, and the inlay circle is located the die cavity, there is the clearance that is used for the exhaust between inlay circle and the external mold.
Description
Technical Field
The utility model relates to a big dish down formula is used for producing cold core box of bellmouth psammitolite for nodular cast iron pipe belongs to cold core box mould field.
Background
The nodular cast iron pipe is used in water pipeline engineering to realize water transportation, so that the sealing performance of two connected pipe fittings needs to be ensured when the nodular cast iron pipe is applied to the water pipeline engineering, the requirements on the surface quality, the size and the ovality of a bell mouth and a spigot of the nodular cast iron pipe are high, and a sand core of the bell mouth is a main factor for determining the quality of the bell mouth of the nodular cast iron pipe. The socket sand core is accurate in size and small in ovality; secondly, the surface is smooth, no obvious defect exists, and the sand core is compact.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the above-mentioned not enough that exists among the prior art, and provide a structural design's big dish down formula is used for producing the cold core box of bellmouth psammitolite for nodular cast iron pipe.
The utility model provides a technical scheme that above-mentioned problem adopted is: the cold core box with the downward large disk for producing the bellmouth sand core for the nodular cast iron pipe comprises a lower die, a die core and an outer die, wherein the die core and the outer die are matched with the lower die, a die cavity is formed among the lower die, the die core and the outer die, and the cold core box is characterized in that: the diameter of die cavity from top to bottom increases in proper order, the cold-box still includes the inlay circle, the inlay circle is installed on the external mold, and the inlay circle is located the die cavity, there is the clearance that is used for the exhaust between inlay circle and the external mold.
Furthermore, an exhaust channel is arranged on the outer die and communicated with the gap.
Furthermore, the top end of the outer die is provided with a sand shooting hole, and the lower end of the sand shooting hole is in a conical surface shape.
Furthermore, the cold core box also comprises a vent plug and a character code movable block, wherein the vent plug is arranged on the lower die, the character code movable block is arranged on the outer die, and the vent plug and the character code movable block are both positioned in the die cavity.
Furthermore, the cold core box further comprises a base and a guide rail, the outer die comprises a left die and a right die, the lower die is installed on the base, and the left die and the right die are installed on the base through the guide rail.
Furthermore, the cold core box further comprises a top core rod and a top core plate, wherein one end of the top core rod is located in the die cavity, and the other end of the top core rod is connected with the top core plate.
Furthermore, a sand shooting head and a blowing plate are arranged above the mold core and the outer mold, a sand shooting plate is installed at the lower end of the sand shooting head, a sand shooting nozzle is installed on the sand shooting plate, and the sand shooting nozzle is matched with the sand shooting hole.
Furthermore, be provided with first arch and second arch on the inner wall of external mold, it is protruding to be provided with the third on the inlay circle, first arch is the right angle structure setting, second arch and third arch all are the arcuation structure setting.
Furthermore, a character code loose piece is arranged on the first protrusion and used for lettering the sand core.
Further, the distance of the gap between the insert ring and the outer die is smaller than the grain diameter of the sand.
Compared with the prior art, the utility model has the advantages of it is following: when the cold core box is used for processing the sand core, the sand injected into the mold cavity can be exhausted through the gap between the insert ring and the outer mold, so that the compactness of the sand core is improved, and the gap exhaust and the vent plug exhaust are combined, so that the sand core is full and free of air leakage and defects. In addition, the sand shooting hole is connected with the sand shooting nozzle by adopting cone sealing, the design is reasonable, the sand core is ensured to be compact, and the sand core strength is high; large blowing flow area, no dead angle, good curing effect, less triethylamine and resin consumption and high production efficiency.
Drawings
Fig. 1 is a schematic front view structure diagram of a cold box according to an embodiment of the present invention.
Fig. 2 is a left side view structure diagram of the cold box of the embodiment of the present invention.
Fig. 3 is an enlarged schematic view of a portion a in fig. 2.
Fig. 4 is a schematic top view of the cold box according to the embodiment of the present invention.
Description of reference numerals: the sand shooting device comprises a base 1, a lower die 2, a die core 3, an outer die 4, a die cavity 5, an insert ring 6, a vent plug 7, a character code movable block 8, a guide rail 9, a core jacking rod 10, a core jacking plate 11, an exhaust channel 12, a sand shooting head 13, a sand shooting plate 14, a sand shooting nozzle 15, a sand shooting hole 16, a first bulge 17, a second bulge 18 and a third bulge 19.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.
Examples are given.
Referring to fig. 1 to 4, it should be understood that the structures, ratios, sizes, etc. shown in the drawings attached to the present specification are only used for matching with the contents disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essence, and any modification of the structures, changes of the ratio relationship, or adjustment of the sizes should still fall within the scope that the technical contents disclosed in the present invention can cover without affecting the efficacy and the achievable purpose of the present invention. Meanwhile, in the present specification, if there are terms such as "upper", "lower", "left", "right", "middle" and "one", they are used for clarity of description only, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are considered as the scope of the present invention without substantial changes in the technical content.
The cold core box with the downward large disk for producing the bell-mouthed sand core for the nodular cast iron pipe in the embodiment comprises a base 1, a lower die 2, a die core 3, an outer die 4, a vent plug 7, a character code loose piece 8, a guide rail 9, a core ejecting rod 10 and a core ejecting plate 11.
The mold core 3 and the outer mold 4 in the embodiment are matched with the lower mold 2, a mold cavity 5, namely a bellmouth sand core, is formed among the lower mold 2, the mold core 3 and the outer mold 4, the diameter of the mold cavity 5 is sequentially increased from top to bottom, the cold core box further comprises an insert ring 6, the insert ring 6 is installed on the outer mold 4, the insert ring 6 is located in the mold cavity 5, a gap for exhausting air exists between the insert ring 6 and the outer mold 4, and the distance of the gap between the insert ring 6 and the outer mold 4 is smaller than the grain size of sand.
In the embodiment, the outer die 4 is provided with the exhaust channel 12, the exhaust channel 12 is communicated with the gap, the top end of the outer die 4 is provided with the sand shooting hole 16, the lower end of the sand shooting hole 16 is in a conical surface shape, the vent plug 7 is installed on the lower die 2, the character code loose piece 8 is installed on the outer die 4, and the vent plug 7 and the character code loose piece 8 are both located in the die cavity 5.
The outer die 4 in this embodiment includes a left die and a right die, the lower die 2 is installed on the base 1, the left die and the right die are both installed on the base 1 through the guide rail 9, one end of the ejector core rod 10 is located in the die cavity 5, and the other end of the ejector core rod 10 is connected with the ejector core plate 11.
In the embodiment, a sand shooting head 13 and a blowing plate are arranged above the mold core 3 and the outer mold 4, a sand shooting plate 14 is arranged at the lower end of the sand shooting head 13, a sand shooting nozzle 15 is arranged on the sand shooting plate 14, and the sand shooting nozzle 15 is matched with a sand shooting hole 16.
In this embodiment, the inner wall of the outer mold 4 is provided with a first protrusion 17 and a second protrusion 18, the insert ring 6 is provided with a third protrusion 19, the first protrusion 17 is arranged in a right-angle structure, the second protrusion 18 and the third protrusion 19 are arranged in an arc structure, and the first protrusion 17 is provided with a code movable block 8 for lettering the sand core.
Specifically, the sand shooting nozzle 15 arranged on the sand shooting plate 14 penetrates through the sand shooting hole 16 to shoot sand into the mold cavity 5, the lower end of the sand shooting hole 16 is in a conical surface shape in the sand shooting process, the conical surface is attached to the sand shooting hole 16, sealing is good, reverse outflow of sand can be effectively avoided, meanwhile, the sand shooting nozzle 15 arranged in a conical surface is matched with the sand shooting hole 16 to shoot sand, the sand core is free of waste stems, the conical surface is good in sealing, and the service life of the sand shooting nozzle is long.
Meanwhile, characters can be engraved on the outer wall of the sand core through the character code loose piece 8, manual writing is not needed, working efficiency is improved, gap exhaust and ventilation plug 7 exhaust are combined, sand leakage is avoided, and the sand core is full and free of defects. After the sand injection is completed, the left die and the right die are opened through the guide rail 9, the sand core is taken out through the top core rod 10 and the top core plate 11, and corresponding grooves can be correspondingly formed on the sand core through the arrangement of the first protrusion 17, the second protrusion 18 and the third protrusion 19, so that the two pipe fittings are tightly connected.
The number of the cores 3 in this embodiment may be determined according to the diameter of the sand core, and the number of the cores 3 is preferably 1 to 3.
The air exhaust mode is reasonable in design, and the air exhaust is combined with the air exhaust of the vent plug, so that the sand does not leak due to air leakage, and the sand core is full and free of defects.
The design of the sand shooting and air blowing opening is reasonable, so that the sand core is compact and high in strength; large blowing flow area, no dead angle, good curing effect, less triethylamine and resin consumption and high production efficiency.
The manufacturing process is excellent and mature. The easy-to-wear and gas-accumulating part of the cavity adopts an embedded structure; each movable guide rail is made of low-carbon alloy steel, and is carburized and quenched, so that the surface is hard and the core is tough, the movable guide rails are not easy to wear, and the service life is long.
The sand is injected by adopting the conical-surface sand injection nozzle, so that the sand core has no waste stem, the conical surface is well sealed, and the service life of the injection nozzle is long.
The outer die of the die cavity is provided with a movable block driven by an air cylinder, so that the requirement of lettering on the end face of the bellmouth of the sand core is met.
DN 80-2600 bellmouth sand core box designed and manufactured by the company is specially used for ductile iron pipe manufacturers. The bellmouth sand core produced by the core box is one of the key elements for determining the size and the surface quality of the bellmouth of the nodular cast iron pipe. The sand core has the advantages of high full and compact strength, smooth surface without defects, and accurate and stable size, and is the main quality index of the sand core.
In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an example of the structure of the present invention. All the equivalent changes or simple changes made according to the structure, characteristics and principle of the utility model are included in the protection scope of the utility model. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (8)
1. The utility model provides a big dish down formula is used for producing cold core box of bellmouth psammitolite for nodular cast iron pipe, includes lower mould (2), mold core (3) and external mold (4) all cooperate with lower mould (2), form die cavity (5), its characterized in that between lower mould (2), mold core (3) and external mold (4): the cold core box also comprises an insert ring (6), the insert ring (6) is installed on the outer die (4), the insert ring (6) is located in the die cavity (5), and a gap for exhausting air exists between the insert ring (6) and the outer die (4).
2. The cold box of claim 1, of the large-plate-down type for producing a bell-mouth sand core for ductile iron pipes, wherein: the diameter of die cavity (5) increases from top to bottom in proper order, be provided with exhaust passage (12) on external mold (4), exhaust passage (12) and clearance intercommunication.
3. The cold box of claim 1, of the large-plate-down type for producing a bell-mouth sand core for ductile iron pipes, wherein: the top end of the outer die (4) is provided with a sand shooting hole (16), and the lower end of the sand shooting hole (16) is in a conical surface shape.
4. The cold box of claim 1, of the large-plate-down type for producing a bell-mouth sand core for ductile iron pipes, wherein: the cold core box further comprises a vent plug (7) and a character code loose piece (8), the vent plug (7) is installed on the lower die (2), the character code loose piece (8) is installed on the outer die (4), and the vent plug (7) and the character code loose piece (8) are both located in the die cavity (5).
5. The cold box of claim 1, of the large-plate-down type for producing a bell-mouth sand core for ductile iron pipes, wherein: the cold core box further comprises a base (1) and a guide rail (9), the outer die (4) comprises a left die and a right die, the lower die (2) is installed on the base (1), and the left die and the right die are installed on the base (1) through the guide rail (9).
6. The cold box of claim 1, of the large-plate-down type for producing a bell-mouth sand core for ductile iron pipes, wherein: the cold core box further comprises a top core rod (10) and a top core plate (11), one end of the top core rod (10) is located in the die cavity (5), and the other end of the top core rod (10) is connected with the top core plate (11).
7. The cold box of claim 1, of the large-plate-down type for producing a bell-mouth sand core for ductile iron pipes, wherein: the sand shooting device is characterized in that a sand shooting head (13) and a blowing plate are arranged above the mold core (3) and the outer mold (4), a sand shooting plate (14) is installed at the lower end of the sand shooting head (13), a sand shooting nozzle (15) is installed on the sand shooting plate (14), and the sand shooting nozzle (15) is matched with a sand shooting hole (16).
8. The cold box of claim 1, of the large-plate-down type for producing a bell-mouth sand core for ductile iron pipes, wherein: the distance of the gap between the insert ring (6) and the outer die (4) is smaller than the grain diameter of the sand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020965182.7U CN212884851U (en) | 2020-06-01 | 2020-06-01 | Cold core box with downward large disk for producing bell mouth sand core for nodular cast iron pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020965182.7U CN212884851U (en) | 2020-06-01 | 2020-06-01 | Cold core box with downward large disk for producing bell mouth sand core for nodular cast iron pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212884851U true CN212884851U (en) | 2021-04-06 |
Family
ID=75266572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020965182.7U Active CN212884851U (en) | 2020-06-01 | 2020-06-01 | Cold core box with downward large disk for producing bell mouth sand core for nodular cast iron pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212884851U (en) |
-
2020
- 2020-06-01 CN CN202020965182.7U patent/CN212884851U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106694817B (en) | A kind of double plate flange and flange spheroidal graphite cast-iron straight tube block cast device through walls | |
| CN212884851U (en) | Cold core box with downward large disk for producing bell mouth sand core for nodular cast iron pipe | |
| CN100500330C (en) | Method for casting piston | |
| CN212884853U (en) | Cold core box with upward large plate for producing bell mouth sand core for nodular cast iron pipe | |
| CN104070135A (en) | Casting method of sand core oil tube of internal combustion engine | |
| CN111637277A (en) | Internal-acting type nodular cast iron jacking pipe for whole trenchless pipeline construction | |
| CN101195155A (en) | Mold for producing lamp frame reflecting body of selenium lamp | |
| CN212884852U (en) | Cold core box with downward large disk for producing bellmouth sand core for nodular cast iron pipe | |
| CN206474641U (en) | The inexpensive gate valve casting without rising head | |
| CN210705557U (en) | Internal annular groove exhaust structure for ensuring product quality | |
| CN210254105U (en) | CO (carbon monoxide)2Blowing device for gas hardening water glass foundry sand | |
| CN202895613U (en) | Exhaust injection mould | |
| CN207255224U (en) | A kind of discharge type presses case iron | |
| CN212241976U (en) | Active exhaust device for in-mold insert | |
| CN206702167U (en) | A kind of twin elbow mould | |
| CN208390819U (en) | A kind of monolithic tank cold-punching mold producing ladder wall thickness | |
| CN205949783U (en) | Sand core die with exhaust system | |
| CN211464755U (en) | Whole-casting micro-jacking pipe lost foam pouring system | |
| CN219364814U (en) | Trap for storing water | |
| CN111468679A (en) | Car stamping die ductile iron drawing die profile cooling frock | |
| CN205096491U (en) | A wheel quick moulded die | |
| CN214949019U (en) | Novel split type gas furnace end | |
| CN219520410U (en) | Core box structure for forming cast-character platform on pipe fitting | |
| CN209969517U (en) | Die casting die water hole repairing structure that leaks | |
| CN209532058U (en) | A kind of compression mod injection road seals constructed of aluminium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |