CN220739390U - Metal mold and molding device for casting large-diameter cylinder sleeve - Google Patents
Metal mold and molding device for casting large-diameter cylinder sleeve Download PDFInfo
- Publication number
- CN220739390U CN220739390U CN202322364527.XU CN202322364527U CN220739390U CN 220739390 U CN220739390 U CN 220739390U CN 202322364527 U CN202322364527 U CN 202322364527U CN 220739390 U CN220739390 U CN 220739390U
- Authority
- CN
- China
- Prior art keywords
- metal mold
- cylinder sleeve
- casting
- lifting
- cylinder
- 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
- 239000002184 metal Substances 0.000 title claims abstract description 72
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 72
- 238000005266 casting Methods 0.000 title claims abstract description 36
- 238000000465 moulding Methods 0.000 title claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 229910001141 Ductile iron Inorganic materials 0.000 claims description 4
- 238000003754 machining Methods 0.000 abstract description 8
- 244000035744 Hura crepitans Species 0.000 description 20
- 239000004576 sand Substances 0.000 description 17
- 239000011347 resin Substances 0.000 description 11
- 229920005989 resin Polymers 0.000 description 11
- 239000003110 molding sand Substances 0.000 description 5
- 238000009826 distribution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 102100034983 E3 ubiquitin-protein ligase ZNRF4 Human genes 0.000 description 1
- 101000802410 Homo sapiens E3 ubiquitin-protein ligase ZNRF4 Proteins 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- ARPUHYJMCVWYCZ-UHFFFAOYSA-N ciprofloxacin hydrochloride hydrate Chemical compound O.Cl.C12=CC(N3CCNCC3)=C(F)C=C2C(=O)C(C(=O)O)=CN1C1CC1 ARPUHYJMCVWYCZ-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Landscapes
- Casting Devices For Molds (AREA)
Abstract
The utility model provides a metal mold for casting a large-diameter cylinder sleeve, which comprises the following components: the lifting part and the cylinder sleeve appearance part, and the upper core head part of the cover plate positioned between the lifting part and the upper port of the cylinder sleeve appearance part, and the lower core head part positioned at the lower port of the cylinder sleeve appearance part; wherein each part is of a hollow cylinder structure, and the four parts are coaxially arranged in sequence from top to bottom; and the hollow structure of the cylinder sleeve appearance part is internally provided with a pneumatic vibrator at the positions close to the upper port and the lower port respectively. Simultaneously, a molding device based on the metal mold is provided. The upper core head, the lower core head and the cylinder sleeve of the cylinder sleeve are all positioned in the lower box, the dimensional accuracy is ensured by the die, the lower type disposable molding can be realized, the dimensional accuracy of castings is high, the machining allowance of the outer circle and the inner hole can be reduced by about 20%, and the lower type cylinder sleeve has no multiple parting surfaces, is convenient to assemble and has small running fire risk.
Description
Technical Field
The utility model relates to the technical field of casting, in particular to a metal mold and a molding device for casting a large-diameter cylinder sleeve.
Background
Conventional large bore cylinder liners typically employ a casting process that is vertically poured. Because the cylinder sleeve is longer, the lower die is generally divided into three to four sections again except for the upper and lower parting dies, the lower die is molded respectively, and then the lower die and the upper die are combined together successively during the box matching. Because the sections are combined together, the coaxiality of each section and the coaxiality of the mud core of the central hole are not easy to ensure, and the accumulated error is large, so that the machining allowance of the outer circle and the inner hole of the cylinder sleeve is larger; and because the lower sections are more, the parting surfaces are more, the box distribution is inconvenient, and meanwhile, the risk of fire running is increased.
Disclosure of Invention
The utility model provides a metal mold and a molding device for casting a cylinder sleeve with a large cylinder diameter, aiming at the defects in the prior art.
According to one aspect of the present utility model, there is provided a metal mold for casting a large-diameter cylinder liner, comprising: the lifting part and the cylinder sleeve appearance part, an upper core head part of the cover plate positioned between the lifting part and an upper port of the cylinder sleeve appearance part and a lower core head part positioned at a lower port of the cylinder sleeve appearance part; wherein each part is of a hollow cylinder structure, and the four parts are coaxially arranged in sequence from top to bottom;
the pneumatic vibrator is arranged at the position, close to the upper port and the lower port, inside the hollow structure of the cylinder sleeve appearance part, and is used for realizing auxiliary sand-pounding modeling, ensuring that the size of a cavity is larger than the single-side size of a die, and facilitating the demolding function after the resin sand is solidified.
Preferably, the metal mold is integrally prepared from spheroidal graphite cast iron by a mechanical processing mode.
Preferably, the outer surface finish of the metal mold is Ra3.2 and above.
Preferably, the wall thickness of the metal mold is 30-50 mm.
Preferably, the four parts are coaxially and integrally formed and mounted sequentially from top to bottom.
Preferably, the amplitude of the pneumatic vibrator is 1-2 mm.
Preferably, two pairs of round holes are formed in the diameter direction of the lifting part and are used for hanging and/or lifting the metal die.
Preferably, the pneumatic vibrator near the upper port is located at 1/4 of the entire length of the metal mold.
Preferably, the cylinder sleeve appearance part forms three cavity parts from top to bottom, and the diameters of the lifting part and the three cavity parts are sequentially reduced from top to bottom, so that the outer surface of the metal mold forms a stepped structure.
Preferably, any one or more of the following components are also included:
-a compressed air tube connected to the pneumatic vibrator;
-a round steel fitted with the lifting portion for suspending and/or lifting the metal mould.
According to another aspect of the present utility model, there is provided a molding apparatus for casting a large-bore cylinder liner, comprising: the metal mold comprises a sand box and the metal mold according to any one of the above embodiments, wherein the metal mold is detachably hung at the center inside the sand box, and a molding cavity is formed between the sand box and the metal mold.
Preferably, in the working state, the sand box is placed in the pit.
Preferably, the flask includes a plurality of round flasks, and a plurality of round flasks are coaxially stacked and fastened.
Due to the adoption of the technical scheme, compared with the prior art, the utility model has at least one of the following beneficial effects:
the metal mold and the molding device for casting the large-diameter cylinder sleeve solve the problems of multiple parting surfaces, larger machining allowance of the outer circle and the inner hole of the cylinder sleeve in the conventional cylinder sleeve, the upper core head, the lower core head and the cylinder sleeve of the cylinder sleeve are positioned in the lower box, the dimensional precision is ensured by the mold, the lower-type one-time molding can be realized, the dimensional precision of a casting is high, the machining allowance of the outer circle and the inner hole can be reduced by about 20 percent, and the lower-type cylinder sleeve has no multiple parting surfaces, is convenient to assemble and has small running risk.
According to the metal mold and the molding device for casting the large-diameter cylinder sleeve, the pneumatic vibrator is arranged on the metal mold, sand-pounding molding is assisted, the size of a cavity is ensured to be 1-2 mm larger than that of a single side of the mold, and the mold is convenient to lift after resin sand is solidified.
Drawings
Other features, objects and advantages of the present utility model will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
fig. 1 is a schematic structural view of a metal mold and molding apparatus for casting a large-diameter cylinder liner according to a preferred embodiment of the present utility model.
Figure 2 illustrates a molding process for casting large bore cylinder liners in accordance with a preferred embodiment of the present utility model.
In the figure, 1 is a sand box, 2 is round steel, 3 is a cylinder sleeve metal mold, 3.1 is a lifting part, 3.2 is a cover plate upper core head part, 3.3 is a cylinder sleeve appearance part, 3.4 is a lower core head part, 4 is molding sand, 5 is a pneumatic vibrator, and 6 is a compressed air pipe.
Detailed Description
The following describes embodiments of the present utility model in detail: the embodiment is implemented on the premise of the technical scheme of the utility model, and detailed implementation modes and specific operation processes are given. It should be noted that variations and modifications can be made by those skilled in the art without departing from the spirit of the utility model, which falls within the scope of the utility model.
The vertical casting technology adopted by the preparation technology of the large-diameter cylinder sleeve in the prior art generally has the technical problem of large machining allowance of the outer circle and the inner hole of the cylinder sleeve. In order to solve the problem, an embodiment of the utility model provides a metal mold for casting a large-diameter cylinder sleeve, which realizes high dimensional accuracy of the large-diameter cylinder sleeve and can reduce machining allowance of the cylinder sleeve.
As shown in fig. 1, the metal mold for casting the large-diameter cylinder liner provided in this embodiment may include: the lifting part and the cylinder sleeve appearance part, and the upper core head part of the cover plate positioned between the lifting part and the upper port of the cylinder sleeve appearance part, and the lower core head part positioned at the lower port of the cylinder sleeve appearance part; wherein each part is of a hollow cylinder structure, and the four parts are coaxially arranged in sequence from top to bottom;
the pneumatic vibrators are respectively arranged at the positions, close to the upper port and the lower port, inside the hollow structure of the cylinder sleeve appearance part, and can realize the function of assisting in grinding and shaping, so that the size of a cavity is ensured to be slightly larger than the single-side size (about 1-2 mm) of the die, and the die stripping after the resin sand solidification is facilitated.
In a preferred embodiment, the metal mold is entirely made of ductile iron by machining.
In a preferred embodiment, the metal mold has an outer surface finish of Ra3.2 and above.
In a preferred embodiment, the wall thickness of the metal mold is 30 to 50mm.
In a preferred embodiment, the four parts are coaxially integrally formed and mounted in sequence from top to bottom.
In a preferred embodiment, the amplitude of the pneumatic vibrator is 1-2 mm.
In a preferred embodiment, the lifting portion is provided with two pairs of circular holes in the diametrical direction for hanging and/or lifting the metal mold.
In a preferred embodiment, the pneumatic vibrator near the upper port is located at 1/4 of the overall length of the metal mold.
In a preferred embodiment, the cylinder liner profile portion forms three chamber portions from top to bottom, and the diameters of the lifting portion and the three chamber portions are sequentially reduced from top to bottom, so that the outer surface of the metal mold forms a stepped structure.
In a preferred embodiment, any one or more of the following components are also included:
-a compressed air tube connected to the pneumatic vibrator;
-a round steel, fitted with a lifting portion, for suspending and/or lifting the metal mould; further, the round steel is detachably and adaptively arranged in the round hole of the lifting part.
An embodiment of the utility model provides a molding device for casting a large-diameter cylinder liner.
As shown in fig. 1, the molding apparatus for casting a large-diameter cylinder liner provided in this embodiment may include: the sand box and the metal mold provided by the embodiment of the utility model are detachably hung at the center of the inner part of the sand box, and a molding cavity is formed between the sand box and the metal mold.
In a preferred embodiment, the flask is placed in the pit in an operative condition.
In a preferred embodiment, the flask comprises a plurality of round flasks, which are coaxially stacked and securely arranged.
As shown in fig. 2, the molding apparatus for casting a large-diameter cylinder liner according to the above embodiment of the present utility model may include:
s1, providing a metal mold and a sand box;
s2, firstly, putting a part of resin sand into a sand box, and then hanging a metal mold in the sand box;
s3, sand is placed while the sand is pounded, and when the sand is placed to a set height, vibration force is applied to the placed resin sand for assisting the function of pounding the sand for molding, so that the size of a cavity is ensured to be slightly larger than the single-side size (about 1-2 mm) of the die, and the resin sand is convenient to be lifted after being solidified;
s4, continuing to sand, until reaching the complete height, finishing sand discharging, tightly pounding and scraping, and completing modeling work;
and S5, stopping applying the vibration force after the resin sand is hardened, and lifting the metal mold vertically upwards to finish the drawing.
In a preferred embodiment of S3, the height is set to 2/3 of the height of the flask.
In a preferred embodiment of S3, the amplitude of the applied vibration force is 1-2 mm
The metal mold is used for casting the large-diameter cylinder sleeve, provided by the embodiment of the utility model; accordingly, the application of a vibration force to the put resin sand is achieved by activating the pneumatic vibrator of the metal mold.
The technical solutions provided by the foregoing embodiments of the present utility model are further described in detail below with reference to the accompanying drawings and specific application examples, but should not be construed as limiting the scope of the present utility model.
As shown in fig. 1, the metal mold for casting the large-diameter cylinder liner, namely, the cylinder liner metal mold 3, is of a hollow cylinder structure as a whole, and the outer circle is divided into four areas from top to bottom, wherein: the first area corresponds to a metal mold lifting part 3.1 and is used for lifting the metal mold; the second to fourth areas correspond to the cylinder sleeve appearance parts 3.3 and are used for modeling; the first area and the second area correspond to the upper core head part 3.2 of the cover plate, and are used for falling into the cover plate mud core when the box is assembled; the lower end position of the fourth area corresponds to the lower core head part 3.4 and falls into the center Kong Nixin when being used for matching boxes; the pneumatic vibrator 5 is fixedly arranged in the cylinder sleeve metal mold 3 and is used for assisting in sand-pounding modeling, ensuring that the size of a cavity is 1-2 mm larger than that of a single side of the mold, and facilitating mold stripping after resin sand is solidified; one pneumatic vibrator 5 is located at the upper position and is located at about 1/4 of the whole length of the metal mold, and the other pneumatic vibrator 5 is located at the lower tail end of the metal mold and is close to the lower core head part 3.4. The compressed air pipe 6 is connected with the pneumatic vibrator 5.
In some embodiments:
the external shape of the cylinder sleeve metal mold is machined, the smoothness Ra3.2 and above is ensured, the material is spheroidal graphite cast iron, the wall thickness is 30-50mm, the excircle is machined completely after preliminary forming by casting, and the inner hole is machined locally (for installing a pneumatic vibrator). And the metal mould lifting part above the metal mould is provided with two pairs of round holes in the diameter direction, and the metal mould can be hung on the sand box through round steel 2.
During molding, all round sand boxes used for cylinder sleeve lower molding are coaxially stacked and fastened to form a sand box 1, and the sand box 1 is placed in a molding site (because the sand box is higher after assembly and needs to be placed in a pit). Part of the molding sand 4 (slightly higher than the lower core head part by 3.4) is firstly put into the sand box 1, then round steel 2 is used for penetrating through a metal mold lifting part 3.1 to be suspended in the sand box 1, and then the molding sand 4 is put into the sand box for pounding. When the molding sand 4 is placed at about 2/3 of the height of the sand box, the compressed air pipe 6 is opened to switch so that the pneumatic vibrator 5 works, the cylinder sleeve metal mold 3 vibrates immediately, the amplitude is about 1-2 mm, the size of the cavity is 1-2 mm larger than that of a single side of the mold, and the mold is convenient to lift after the resin sand is solidified. And (5) tightly pounding and strickling after the molding sand 4 is put, and completing the molding work. After the resin sand is hardened, the pneumatic vibrator 5 is closed, the cylinder sleeve metal mold 3 stops vibrating, the cylinder sleeve metal mold 3 is lifted vertically upwards, and the mold stripping work is completed.
According to the metal mold and the molding device for casting the cylinder sleeve with the large cylinder diameter, provided by the embodiment of the utility model, the upper core head, the lower core head and the cylinder sleeve are positioned in the lower box, the dimensional accuracy is ensured by the mold, the lower-type one-step molding can be realized, the dimensional accuracy of castings is high, the machining allowance of the outer circle and the inner hole can be reduced by about 20%, and the lower-type cylinder sleeve has no multiple parting surfaces, so that the box distribution is convenient, and the running risk is small.
The foregoing embodiments of the present utility model are not all well known in the art.
The foregoing describes specific embodiments of the present utility model. It is to be understood that the utility model is not limited to the particular embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the claims without affecting the spirit of the utility model.
Claims (10)
1. A metal mold for casting a large bore cylinder liner, comprising: the lifting part and the cylinder sleeve appearance part, an upper core head part of the cover plate positioned between the lifting part and an upper port of the cylinder sleeve appearance part and a lower core head part positioned at a lower port of the cylinder sleeve appearance part; wherein each part is of a hollow cylinder structure, and the four parts are coaxially arranged in sequence from top to bottom;
and a pneumatic vibrator is respectively arranged at the positions, close to the upper port and the lower port, inside the hollow structure of the cylinder sleeve appearance part.
2. The metal mold for large diameter cylinder liner casting according to claim 1, further comprising any one or more of:
the whole metal mould is prepared by adopting spheroidal graphite cast iron through a mechanical processing mode;
-the outer surface finish of the metal mould is ra3.2 and above;
-the wall thickness of the metal mould is 30-50 mm;
the four parts are coaxially and integrally formed and mounted in sequence from top to bottom.
3. The metal mold for casting large-bore cylinder liners according to claim 1, characterized in that the amplitude of the pneumatic vibrator is 1-2 mm.
4. The metal mold for casting a large-diameter cylinder liner according to claim 1, wherein the lifting portion is provided with two pairs of circular holes in a diameter direction for hanging and/or lifting the metal mold.
5. The metal mold for large bore cylinder liner casting of claim 1, wherein the pneumatic vibrator near the upper port is located at 1/4 of the overall length of the metal mold.
6. The metal mold for large-bore cylinder liner casting according to claim 1, wherein the liner profile portion forms three chamber portions from top to bottom, and the diameters of the lifting portion and the three chamber portions are sequentially reduced from top to bottom, so that the outer surface of the metal mold forms a stepped structure.
7. The metal mold for large bore cylinder liner casting of claim 1, further comprising any one or more of the following:
-a compressed air tube connected to the pneumatic vibrator;
-a round steel fitted with the lifting portion for suspending and/or lifting the metal mould.
8. A molding apparatus for casting large bore cylinder liners, comprising: a flask and the metal mold according to any one of claims 1 to 7, the metal mold being detachably suspended at an inner center of the flask, a molding cavity being formed between the flask and the metal mold.
9. The molding machine for casting large bore cylinder liners of claim 8, wherein said flask is placed in a pit in an operative condition.
10. The molding machine for casting large-bore cylinder liners according to claim 8, characterized in that the flask includes a plurality of round flasks, a plurality of the round flasks being coaxially stacked and securely arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322364527.XU CN220739390U (en) | 2023-08-31 | 2023-08-31 | Metal mold and molding device for casting large-diameter cylinder sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322364527.XU CN220739390U (en) | 2023-08-31 | 2023-08-31 | Metal mold and molding device for casting large-diameter cylinder sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220739390U true CN220739390U (en) | 2024-04-09 |
Family
ID=90567535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322364527.XU Active CN220739390U (en) | 2023-08-31 | 2023-08-31 | Metal mold and molding device for casting large-diameter cylinder sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220739390U (en) |
-
2023
- 2023-08-31 CN CN202322364527.XU patent/CN220739390U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104308114B (en) | A kind of centrifugal casting process of barrel structure castings | |
| CN110935847B (en) | Positioning tool and positioning method thereof | |
| CN207358114U (en) | A kind of large thick-wall ingot mould casting moulding system | |
| CN112658210B (en) | Sectional casting method for subway bogie special-shaped steel casting | |
| CN215144445U (en) | Sand-cast formed milling head body casting mold structure and blank | |
| CN108453220B (en) | Casting method of ultra-supercritical medium-pressure outer cylinder casting for steam turbine | |
| CN220739390U (en) | Metal mold and molding device for casting large-diameter cylinder sleeve | |
| CN117259666A (en) | Metal mold for casting large-diameter cylinder sleeve, molding device and molding method | |
| CN102441640B (en) | Casting mold and molding method thereof | |
| CN115533042A (en) | Casting method of large nodular iron casting | |
| CN201313153Y (en) | Novel composite model of flange fitting | |
| CN215144446U (en) | Machine tool box casting mold structure and blank formed by sand casting | |
| CN103042172A (en) | Upward gas discharge method of lower sand core of complicate connected cast | |
| US2866242A (en) | Foundry molding process | |
| CN107175318A (en) | A kind of upper mould of bearing block precoated sand mould | |
| CN201342464Y (en) | Mould for casting car brake drum | |
| CN112387938A (en) | Casting process of butterfly valve body | |
| CN219852095U (en) | Demolding equipment for sand casting of pump shell | |
| CN210231440U (en) | Sand lined metal mold casting mould structure | |
| CN215845532U (en) | Sand box assembly for manufacturing single-casting sample rod sand mold | |
| CN218050227U (en) | Device for casting sand box at top end of hollow roller for producing rubber and plastic | |
| CN106270417B (en) | Positioning case cone and its casting method for Foundry Production | |
| CN210685374U (en) | Sunken cast-in-place board early tears open with thick liquid hole system lid mould construction system | |
| CN101422807A (en) | Forging method of large-size middle-opening type centrifugal pump | |
| CN213916034U (en) | End cover ring tooling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |