CN220092958U - Sand core bar device suitable for ductile cast iron tee joint and two-way pipe fitting - Google Patents
Sand core bar device suitable for ductile cast iron tee joint and two-way pipe fitting Download PDFInfo
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- CN220092958U CN220092958U CN202321628348.6U CN202321628348U CN220092958U CN 220092958 U CN220092958 U CN 220092958U CN 202321628348 U CN202321628348 U CN 202321628348U CN 220092958 U CN220092958 U CN 220092958U
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- 229910001141 Ductile iron Inorganic materials 0.000 title claims abstract description 25
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 90
- 239000010959 steel Substances 0.000 claims abstract description 90
- 101100366060 Caenorhabditis elegans snap-29 gene Proteins 0.000 claims description 4
- 239000002699 waste material Substances 0.000 abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 8
- 238000005266 casting Methods 0.000 abstract description 7
- 241001391944 Commicarpus scandens Species 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 6
- 229910052742 iron Inorganic materials 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000004576 sand Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000000452 restraining effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The utility model discloses a sand core bar device suitable for a ductile cast iron tee joint and a two-way pipe fitting sand core bar device, and belongs to the technical field of tee joint two-way pipe fitting core box dies. The core box comprises a core box main body, a base is arranged at the bottom of the core box main body, a core pulling rod is arranged at the upper end of the base and is positioned in the core box main body, a core bar is embedded on the core pulling rod, the core bar comprises a steel plate and round steel, a middle hole is formed in the middle position of the steel plate, and the round steel penetrates through the middle hole. The utility model solves the problems that the existing three-way two-way pipe fitting is easy to break in the core making process, and sand core waste is caused; or in the casting process of the sand core of the pipe fitting, the buoyancy of molten iron to the sand core is larger than the strength of the sand core, the sand core is broken, and the problem of pipe fitting blank waste products is caused.
Description
Technical Field
The utility model relates to the technical field of tee joint two-way pipe fitting core box molds, in particular to a sand core bar device suitable for a ductile cast iron tee joint and a two-way pipe fitting.
Background
Ductile iron pipe fittings are an important component for connecting ductile iron pipes. The ductile cast iron pipe fitting has the characteristics of iron nature, steel performance, excellent corrosion resistance, good ductility, good sealing effect, simple installation, and high cost performance, and is mainly used for water supply, gas transmission, oil transmission and the like of municipal and industrial and mining enterprises. The ductile cast iron pipe fitting mainly comprises a two-way pipe and a three-way pipe;
the existing nodular cast iron tee pipe and two-way pipe are various in variety, and in the production process of the tee pipe and the two-way pipe, sand cores are easy to break in the core manufacturing process, so that sand core waste products are caused; or in the casting process of the sand core of the pipe fitting, the buoyancy of the molten iron to the sand core is larger than the strength of the sand core, and the sand core is broken, so that the pipe fitting blank is rejected.
In view of these drawbacks, it is necessary to design a core-bar device suitable for ductile iron tee joints and two-way pipe fittings.
Disclosure of Invention
The utility model aims to provide a sand core and core bar device suitable for a ductile cast iron tee joint and a two-way pipe fitting, which is reusable, convenient for core manufacturing installation and recovery, capable of preventing sand cores from breaking, is a device suitable for the sand core and core bars of the tee joint and the two-way pipe fitting and solves the problems in the prior art.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a be fit for nodular cast iron tee bend and two-way pipe fitting psammitolite core device, includes the core box main part, the bottom of core box main part is provided with the base, the base upper end is provided with takes out the core stick, and takes out the core stick and be located the core box main part, it is equipped with the core on the core stick to take out, the core includes steel sheet and round steel to inlay, the intermediate hole has been seted up to the intermediate position department of steel sheet, and round steel runs through the intermediate hole, and the fillet weld is fixed between round steel and the steel sheet.
Preferably, a round hole is formed in the core pulling rod, and a steel plate groove is formed in the lower end of the round hole.
Preferably, the top of the core pulling rod is provided with a semicircular groove matched with round steel, and the semicircular groove is an R9 semicircular groove.
Preferably, the bottom of the core-pulling rod is provided with inner hexagonal countersunk head bolt holes, the inner hexagonal countersunk head bolt holes are four, the core-pulling rod is fixedly connected with the base through inner hexagonal countersunk head bolts, and the inner hexagonal countersunk head bolts are M12 inner hexagonal countersunk head bolts.
Preferably, the round hole is phi 28, the depth is 6mm, and the steel plate groove is a steel plate groove with the width of 5.
Preferably, a round steel hole is formed in the core pulling rod, the round steel hole is phi 17, and the depth of the round steel hole is 28 mm.
Preferably, the steel plate is a steel plate with the thickness of 4x60x60mm, and the round steel is phi 16 round steel.
Compared with the prior art, the utility model has the following beneficial effects:
1. the device for the sand core of the ductile cast iron tee joint and the two-way pipe fitting provided by the utility model can prevent the sand core of the tee joint pipe fitting from being broken, can also prevent the sand core of the two-way pipe fitting from being broken, has good universality, and can realize the reinforcement of the sand core of the tee joint two-way pipe fitting by restraining the core bars at different positions by the core drawing rod, so that the broken core waste of the sand core and the broken core waste of the pipe fitting blank are avoided.
2. The sand core bar device suitable for the ductile cast iron tee joint and the two-way pipe fitting is characterized in that the core bar is embedded on the core rod in an embedded mode, the core bar is coated by resin sand during sand injection, the core bar is easy and convenient to place, and the core bar can resist the damage effect of the sand mould strongly impacted by the vibrating screen after casting pouring and cooling; secondly, the types of the core bars are obviously reduced, and the application of the three-way two-way pipe fitting sand core can be basically realized by designing the sizes of one to three core bars. The core bars are firm and reliable, the size of the core bars is designed to be larger than that of the screen mesh of the vibrating bed, the recyclable and reusable rate is high, and the production cost is greatly saved.
Drawings
FIG. 1 is a schematic diagram of a die structure of a core box of a ductile iron tee pipe fitting of the utility model;
FIG. 2 is a schematic illustration of the core structure of the present utility model;
FIG. 3 is a schematic diagram of the right side view of the core bar of the present utility model;
FIG. 4 is a cross-sectional view of a core pulling rod of the three-way pipe core box body of the present utility model;
FIG. 5 is a schematic view of the circular hole and steel plate slot structure of the present utility model;
FIG. 6 is a schematic view of the present utility model in the direction of FIGS. 4 A-A;
FIG. 7 is a schematic diagram of a die structure of a core box of a ductile iron two-way tapered pipe fitting of the present utility model;
FIG. 8 is a sectional view of a core pulling rod of the two-way tapered tube core box body of the present utility model;
fig. 9 is a schematic view of the round steel hole structure of the present utility model.
In the figure: 1. a core box main body; 2. a core bar; 3. drawing out the core rod; 4. a base; 201. a steel plate; 202. round steel; 301. an inner hexagonal countersunk bolt hole; 302. a round hole; 303. a steel plate groove; 304. a semicircular groove; 305. round steel hole.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
In order to solve the problem that the existing three-way two-way pipe fitting is easy to break in the core making process, so that sand core waste is caused; or in the casting process of the sand core of the pipe fitting, the buoyancy of the molten iron to the sand core is larger than the strength of the sand core, the sand core is broken, and the technical problem of pipe fitting blank waste is caused, referring to fig. 1-6, the embodiment provides the following technical scheme:
the utility model provides a be fit for nodular cast iron tee bend and two-way pipe fitting psammitolite core device, including core box main part 1, the bottom of core box main part 1 is provided with base 4, and base 4 upper end is provided with takes out core rod 3, and takes out core rod 3 and be located core box main part 1, the core rod 3 is last to be inlayed and to be equipped with core 2, core 2 includes steel sheet 201 and round steel 202, the intermediate hole has been seted up to the intermediate position department of steel sheet 201, round steel 202 runs through the intermediate hole, the round steel 202 is fixed with the steel sheet 201 between the fillet weld, ensure firm in connection reliably.
The inside of the core rod 3 is provided with a round hole 302, the lower end of the round hole 302 is provided with a steel plate groove 303, the round hole 302 is phi 28, the depth of the round hole 302 is 6mm, and the steel plate groove 303 is a steel plate groove 303 with the width of 5.
The top of the core rod 3 is provided with a semicircular groove 304 matched with the round steel 202, and the semicircular groove 304 is a semicircular groove 304 of R9.
In order to avoid welding pins and place phi 16 round steel 202, a round hole 302 and a semicircular groove 304 with the depth of phi 28 being 6mm are arranged at the upper end of the core pulling rod 3; in order to prevent the core bar 2 from moving, a steel plate groove 303 with a width of 5 is provided, which plays a limiting role.
The bottom of the core rod 3 is provided with inner hexagonal countersunk head bolt holes 301, and the number of the inner hexagonal countersunk head bolt holes 301 is four, the core rod 3 is fixedly connected with the base 4 through inner hexagonal countersunk head bolts, and the inner hexagonal countersunk head bolts are M12 inner hexagonal countersunk head bolts.
The steel plate 201 is a steel plate 201 with the length of 4x60x60mm, the steel plate 201 is set to be 60mmx60mm, the size is larger than the size of a vibrating bed screen mesh, so that the core bar 2 and a sand core are separated and cannot fall off from the vibrating bed, recycling of the sand core is achieved, the cost of production tools is saved, the round steel 202 is phi 16, the round steel 202 can be set to be a uniform fixed value according to the length of a product, in the embodiment, the 4mm steel plate 201 and the 16mm round steel 202 are subjected to repeated experiments, the impact deformation effect of the vibrating bed can be basically overcome, and the single core bar 2 can be reused for more than 50 times.
The core box main body 1 in the embodiment is a three-way core box die, the diameter of a branch pipe fitting is 60mm, the casting process is easy to break, and when the core bar 2 is placed, the branch pipe is formed completely. The core pulling rod 3 is provided with the steel plate groove 303 and the semicircular groove 304 to be matched with the steel plate 201 and the round steel 202 for restraining the core bar 2, and the three-way pipe determines the position of the core bar 2 on the core pulling rod 3 by relying on self gravity and the restraint on different positions of the core bar 2.
Example 2
Referring to fig. 2-3 and fig. 7-9, the present embodiment provides the following technical solutions:
the utility model provides a be fit for nodular cast iron tee bend and two-way pipe fitting psammitolite core device, including core box main part 1, the bottom of core box main part 1 is provided with base 4, and base 4 upper end is provided with takes out core rod 3, and takes out core rod 3 and be located core box main part 1, takes out core rod 3 and inlays on the core rod 2, and core rod 2 includes steel sheet 201 and round steel 202, and the intermediate hole has been seted up to the intermediate position department of steel sheet 201, and round steel 202 runs through the intermediate hole, and the fillet weld is fixed between round steel 202 and the steel sheet 201.
The bottom of the core rod 3 is provided with inner hexagonal countersunk head bolt holes 301, and the number of the inner hexagonal countersunk head bolt holes 301 is four, the core rod 3 is fixedly connected with the base 4 through inner hexagonal countersunk head bolts, and the inner hexagonal countersunk head bolts are M12 inner hexagonal countersunk head bolts.
The inside of the core rod 3 is provided with a round steel hole 305, the round steel hole 305 is phi 17, and the depth of the round steel hole 305 is 28 mm.
In order to place the phi 16 round steel 202, a round steel hole 305 with the phi 17 depth of 28mm is arranged at the upper end of the core pulling rod 3, and a plane is arranged at the top of the core pulling rod 3 and used for supporting the 60x60 steel plate 201.
The steel plate 201 is a steel plate 201 of 4x60x60mm, and the round steel 202 is a round steel 202 of phi 16.
The core box main body 1 in the embodiment is a two-way core box mold, and in two-way pipe fittings, the two-way pipe fittings comprise pipe fittings with caliber smaller than 80mm and also comprise pipe fittings with overlong whole length, and the pipe fittings are particularly obvious in tapered pipe fittings. Because the length of the sand core is longer, the minimum diameter 80 is easy to break in the casting process, after the core bar 2 is placed, the core bar 2 connects the two ends of the large diameter 150 and the small diameter 80, and the core bar 2 passes over the weakest 80, so that the two-way tapered pipe fitting is not broken. The core rod 3 is provided with the round steel hole 305 to be matched with the steel plate 201 and the round steel 202 for restraining the core rod 2, and the two-way pipe determines the position of the core rod 2 on the core rod 3 by relying on self gravity and the restraint on different positions of the core rod 2.
The core bar 2 in this example is common to the core bar 2 in example 1.
Working principle: firstly, manufacturing a core bar 2, wherein a middle hole is formed in a steel plate 201 during manufacturing, round steel 202 passes through the middle hole, the round steel 202 and the steel plate 201 are fixed in a fillet welding manner, and the core bar 2 is manufactured; when the core bar 2 is placed, the core bar 2 is embedded into the core pulling rod 3 of the core box main body 1, the core pulling rod 3 and the base 4 are fixed through four inner hexagonal countersunk head bolts, the core bar 2 is coated with resin sand during sand injection, so that a sand core is not easy to break, and after casting pouring and cooling, the sand core falls off under the action of a vibrating bed screen.
In summary, the three-way pipe core bar 2 and the two-way pipe core bar 2 of similar types can be unified, the core bar 2 can be recycled, the core bar 2 can be reused, the stock cost of the core bar 2 is greatly reduced, and meanwhile, because the core bar 2 is used, the broken core waste of the sand core and the broken core waste of the blank are almost absent, so that the production cost of the pipe fitting is reduced.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a be fit for nodular cast iron tee bend and two-way pipe fitting psammitolite core bar device, includes core box main part (1), its characterized in that: the bottom of core box main part (1) is provided with base (4), base (4) upper end is provided with takes out core stick (3), and takes out core stick (3) and be located core box main part (1), it is equipped with core bar (2) to inlay on the stick of loosing core (3), core bar (2) are including steel sheet (201) and round steel (202), and the intermediate hole has been seted up in intermediate position department of steel sheet (201), and round steel (202) run through the intermediate hole, and the fillet weld is fixed between round steel (202) and the steel sheet (201).
2. A sand core and core bar assembly for ductile iron tee joints and two-way pipe fittings according to claim 1, wherein: a round hole (302) is formed in the core pulling rod (3), and a steel plate groove (303) is formed in the lower end of the round hole (302).
3. A sand core and core bar assembly for ductile iron tee joints and two-way pipe fittings according to claim 1, wherein: the top of the core pulling rod (3) is provided with a semicircular groove (304) matched with the round steel (202), and the semicircular groove (304) is a semicircular groove (304) of R9.
4. A sand core and core bar assembly for ductile iron tee joints and two-way pipe fittings according to claim 1, wherein: the bottom of stick (3) of loosing core is provided with interior hexagonal countersunk head bolt hole (301), and interior hexagonal countersunk head bolt hole (301) are provided with four, through interior hexagonal countersunk head bolt fixed connection between stick (3) of loosing core and base (4), interior hexagonal countersunk head bolt is the interior hexagonal countersunk head bolt of M12.
5. A sand core and core bar assembly for ductile iron tee joints and two-way pipe fittings according to claim 2, wherein: the round hole (302) is phi 28, the depth of the round hole (302) is 6mm, and the steel plate groove (303) is a steel plate groove (303) with the width of 5.
6. A sand core and core bar assembly for ductile iron tee joints and two-way pipe fittings according to claim 1, wherein: a round steel hole (305) is formed in the core pulling rod (3), the round steel hole (305) is phi 17, and the depth of the round steel hole (305) is 28 mm.
7. A sand core and core bar assembly for ductile iron tee joints and two-way pipe fittings according to claim 1, wherein: the steel plate (201) is a steel plate (201) with the thickness of 4x60x60mm, and the round steel (202) is phi 16 round steel (202).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321628348.6U CN220092958U (en) | 2023-06-26 | 2023-06-26 | Sand core bar device suitable for ductile cast iron tee joint and two-way pipe fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321628348.6U CN220092958U (en) | 2023-06-26 | 2023-06-26 | Sand core bar device suitable for ductile cast iron tee joint and two-way pipe fitting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220092958U true CN220092958U (en) | 2023-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321628348.6U Active CN220092958U (en) | 2023-06-26 | 2023-06-26 | Sand core bar device suitable for ductile cast iron tee joint and two-way pipe fitting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220092958U (en) |
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2023
- 2023-06-26 CN CN202321628348.6U patent/CN220092958U/en active Active
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