CN110064738A - A kind of double case sand molds for aluminum alloy spare part casting - Google Patents
A kind of double case sand molds for aluminum alloy spare part casting Download PDFInfo
- Publication number
- CN110064738A CN110064738A CN201910391919.0A CN201910391919A CN110064738A CN 110064738 A CN110064738 A CN 110064738A CN 201910391919 A CN201910391919 A CN 201910391919A CN 110064738 A CN110064738 A CN 110064738A
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- Prior art keywords
- hole
- cope
- lantern ring
- nut
- aluminum alloy
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C21/00—Flasks; Accessories therefor
- B22C21/08—Clamping equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C21/00—Flasks; Accessories therefor
- B22C21/10—Guiding equipment
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Casting Devices For Molds (AREA)
Abstract
The invention belongs to metal casting processing technique fields, and in particular to a kind of double case sand molds for aluminum alloy spare part casting.Including cope and drag box, cope and drag box are bolted, and the outer wall of sandbox is equipped with pin hole, and baffle is arranged on the outside of pin hole, and the right side setting of baffle is used for the clamping groove of fixed baffle, kicker magnet lantern ring is arranged in screw hole；Setting pad pipe in kicker magnet lantern ring, pads and is also arranged with ripple spring the gap between screw hole on the outside of pipe；The external screw thread that screw rod upper section and the lower section setting of the bolt match with internal screw thread in screw hole, the middle section surface of screw rod is non-threaded, and the contractible neck that two diameters are gradually reduced is arranged in the middle section of screw rod；Spacer pin is set in pin hole, and U-type groove is arranged in spacer pin front end；The structural strength of the sand mold is high, fastening effect is strong, and the antidetonation of sand mold and heat-resisting anti-deformation effect are relatively more preferable, and screw rod will not lock in casting process, be more convenient for demoulding.
Description
Technical field
The invention belongs to metal casting processing technique fields, and in particular to a kind of double casees for aluminum alloy spare part casting
Sand mold.
Background technique
Casting is cast to liquid metals in the casting cavity being adapted with part shape, after its cooled and solidified, with
The method for obtaining part or blank；It is one of the most common processing method of metal parts of labyrinth.Cast the casting used
The material of mould is mainly sand, metal and ceramics；Sand mold due to it is easy to process, be easy to demould, and the advantages of cost is relatively low, because
This becomes most important molding material.
According to different morphological features, common casting sand type includes two casees sand molds, three casees sand molds, melt pit sand mold and group again
The different types such as core sand type, two casees sand molds are simplest sand mould structures, are applicable to the parts of Casting of most table structure, upper sand
The abutted surface of case and drag box is the die joint of part apperance；This casting sand type is highly convenient for molding.
Need to carry out model assembly fixation, the essence of sand mold stablized assembly and determine processing apperance in sand casting process
Degree, if the structure of sand mold cannot it is correct, stablize, firm assembly, may due to itself weight, molten metal wash away or
The effects of vibration, shifts, and apperance is caused to deform or occur fault of construction.In addition, sand mold is needed during the preparation process to back-up sand
Jarring is carried out, to guarantee roughing sand consolidation, roughing sand, which combines after loosely may also will lead to parts of Casting, defect occurs.Tight sand process
In in vibration the bond strength of sand mold can be impacted；The fixed device of conventional moulding includes bolt and buckle etc., bolt
Fastening effect it is preferable, vibration resistance undergoes jarring action that can still keep stable, but due to casting during tight sand
A large amount of heat can be released in journey in sand mold, heat will lead to and deform between bolt and screw hole, eventually lead to bolt lock
Extremely, to cause difficulty to sand mold dismantling and the demoulding of part base.The heat-resisting anti-deformation effect of buckle is preferable, it is not easy to lock
Dead problem；But the stability for buckling fastening effect is relatively poor, loosening is easy to appear in vibration environment, to influence sand
The compacting effect of type and the machining accuracy of cast member.
Summary of the invention
For the problems of the prior art, the purpose of the present invention is design a kind of double casees for aluminum alloy spare part casting
Sand mold, the structural strength of the sand mold is high, fastening effect is strong；The antidetonation of sand mold and heat-resisting anti-deformation effect are relatively more preferable, and screw rod exists
It will not be locked in casting process, be more convenient for demoulding.
In order to achieve the above object, the present invention is achieved through the following technical solutions:
A kind of double case sand molds for aluminum alloy spare part casting, including cope and drag box, cope and drag box pass through
Bolt is fixed, and perforative screw hole up and down, the cope upper half and drag box in screw hole are arranged in the side wall of cope and drag box
Internal screw thread is arranged in lower half；Cope lower half and the drag box upper half are non-threaded through-hole, and the internal diameter of non-threaded through hole section is big
In the internal diameter of thread segment；The outer wall of through hole section is equipped with pin hole in cope and drag box, and setting can be along sand mold outer wall on the outside of pin hole
The section of the baffle of rotation, baffle is in " 7 " font, and front end is arranged the clamping portion of perpendicularly inward stretching, sets on the right side of the baffle
Set the clamping groove for fixed baffle, the opening upwards of clamping groove；
Kicker magnet lantern ring is set in the through hole section of screw hole；Kicker magnet lantern ring is made of the semiorbicular pole N and the pole S respectively；Kicker magnet
Setting pad pipe in lantern ring, pad pipe by along axisymmetrical left part and right part be spliced；The top and bottom setting for padding pipe is outside
Bending part；Pipe surface is padded to be equipped with and corresponding pin hole on cope and drag box outer wall；It pads on the outside of pipe between screw hole
Ripple spring is also arranged in gap；
The external screw thread that screw rod upper section and the lower section setting of bolt match with internal screw thread in screw hole, the middle section surface of screw rod is without spiral shell
The contractible neck that two diameters are gradually reduced is arranged in line, the middle section of screw rod；Cope is under after contractible neck is located at screw rod installation
The corresponding position of pin hole in sandbox；
Spacer pin is set in pin hole, and U-type groove, the shape of the edge setting and contractible neck of U-type groove front end is arranged in spacer pin front end
The chamfering to match.
Wherein, the top of bolt is equipped with nut, and bottom end is provided by nut, and the nut quantity of bottom end connection is two
It is a, buffer gasket is equipped with above the nut of inside, wherein be also provided with buffer gasket below nut.
Double nut connection can produce self-locking, and nut is avoided to spin and loosen on bolt；Spiral shell can be absorbed in gasket
The active force in rod axis direction promotes the anti seismic efficiency of sand mold.
When the sand mold assembles, cope and drag box are assembled, then bolt is inserted into screw hole and is screwed, upper sand is passed through
Spacer pin is inserted by the position of contractible neck when neck to be stretched is at pin hole in pin hole observation bolt on case and drag box
Into pin hole, clamping bolt, then again by flapper at pin hole, so that the clamping portion of baffle front end is inserted into clamping groove
It is interior, at this point, baffle pushes against spacer pin.Finally stud base is locked by double nut.
The sand mold is in use, fill roughing sand into sandbox, and by crumpling, squeezing, the modes such as vibration compress roughing sand；Then
Again to the intracavitary casting for carrying out molten metal of type；After part is cooled and shaped, the nut below bolt is removed, then turns baffle
It is dynamic to open, spacer pin is pulled up, finally screws out bolt.
Preferably, spacer pin be inserted into pin hole with bolt clamping, after flapper is locked into clamping groove；Spacer pin tail
End pushes against baffle just.The effect of spacer pin is mainly fixed bolt, has both prevented bolt from occurring in vibration processes certainly
Unscrew it is dynamic and the problem of along axis shift；The change perpendicular to axis direction can also occur because of heated to avoid screw rod middle section
Shape causes screw rod to be difficult to take out.
Preferably, kicker magnet lantern ring is prepared by the Al-Ni-Co permanent magnet with high-curie temperature；Kicker magnet covers ring set
It on the outside of pad pipe, is fixedly connected by resilient snubber therebetween, and the outer diameter of kicker magnet lantern ring is less than ripple spring
Outer diameter.
The effect of bolster is to prevent pad pipe deformation from impacting to the structural intergrity of kicker magnet lantern ring, kicker magnet lantern ring
Outer diameter it is relatively small, can also to avoid it is extruded and stress damage.
Preferably, in screw hole kicker magnet lantern ring quantity be it is multiple, along pad pipe be axially uniformly distributed.
The main function of kicker magnet lantern ring is to form magnetic field, is reduced by way of magnetic absorption and is shaken in sand mold use process
It is influenced caused by the dynamic connection effect between screw rod and pad pipe；The setting of kicker magnet lantern ring has the high-frequency vibration of low amplitude
There is preferable neutralization effect；Bonding strength between screw rod middle section and screw hole can be enhanced.
Preferably, ripple spring can be selected multi-disc annular ripple spring leaf and carry out laminating combination, or using through 3D printing
Integral type ripple spring.
The effect of ripple spring is the shape caused by the structures such as gasket when the cooling heat release of molten metal causes roughing sand to expand
It is changed into effectively being absorbed, avoids impacting screw-rod structure, prevent screw rod bending；It is de- after being beneficial to forming parts
Mould.
Preferably, bolt and spacer pin are prepared by the high-speed steel of low thermal coefficient of expansion.
Bolt and spacer pin use high speed steel material, can utmostly keep structural strength and property after absorbing heat
The stabilization of matter maintains the stable structure of sand mold, reduces the ratio of defects of forming part.
Preferably, the nut of bolt is the hexagonal (hexagon)nut of standard, also sets up interior hex slot at the top of nut.
Outer-hexagonal and interior hexagonal structure are respectively set in nut, therefore different tools can be used during screwing.
The present invention have it is following the utility model has the advantages that
The sand mold can be adapted for the casting of aluminum alloy spare part, have better structural stability, heat resistance is preferable, antidetonation
Performance is prominent；Therefore the yields of part processing can be greatly improved, ratio of defects is reduced.
Wherein the cope of sand mold and drag box are fixed using special screw rod, screw rod upper and lower ends by screw thread with
Screw hole is combined closely, and middle section deforms locked in order to avoid thermal expansion, is not attached using screw thread, but by non-threaded
Through rod be in close contact, through rod section is specially provided with distensible pad to promote the intensity of contact action in screw hole
Ripple spring is also set up in piece, gasket and screw hole, the active force in vibration and thermal expansion process is absorbed.In addition outside gasket
It is also provided with kicker magnet lantern ring, the percussion in vibration processes is further offset by magnetic field.To avoid sand mold back-up sand, tight
Percussion during sand etc. causes sandbox to misplace, and influences the yields of components.
Wherein the high temperature of molten aluminium alloy and heat impact the magnetism of kicker magnet in order to prevent, also special in the present invention
The Al-Ni-Co permanent magnet of high-curie temperature has not been selected.
The middle section of screw rod is provided with special spacer pin, and fiber pin can bear the horizontal force that screw rod is subject to, prevent
Screw rod is squeezed and bending, so that screw-rod structure is more stable, is convenient for sandbox dismounting and part removal.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of double case sand molds in the present embodiment；
Fig. 2 is the disassembly diagram of bolt in the present embodiment, pad pipe and limit latch structure；
Fig. 3 is the structural schematic diagram of drag box and its baffle and clamping groove in the present embodiment；
Fig. 4 is kicker magnet lantern ring and surrounding Distribution of Magnetic Field figure in the present embodiment；
In the figure, it is marked as 1, cope；2, drag box；3, bolt；4, spacer pin；5, baffle；6, clamping groove；30, nut；31,
Screw rod；32, contractible neck；33, nut；41, U-type groove；51, clamping portion；100, pin hole；101, pad pipe；102, ripple spring；103,
Kicker magnet lantern ring.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described.
In the description of the present invention, it should be noted that unless otherwise indicated, the meaning of " plurality " is two or two with
On；The orientation of the instructions such as term " on ", "lower", "left", "right", "inner", "outside", " front end ", " rear end ", " top ", " bottom "
Or positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplification of the description, and
It is not that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore
It is not considered as limiting the invention.In addition, term " first ", " second ", " third " etc. are used for description purposes only, and cannot
It is interpreted as indication or suggestion relative importance.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " installation ",
" connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally connect
It connects；It can be mechanical connection, be also possible to circuit connection；It can be directly connected, be also possible to through the indirect phase of intermediary
Even.For the ordinary skill in the art, visual concrete condition understands the concrete meaning of above-mentioned term in the present invention.
A kind of double case sand molds for aluminum alloy spare part casting, as shown in Figure 1, including cope 1 and drag box 2, on
Sandbox 1 and drag box 2 are fixed by bolt 3, perforative screw hole above and below setting in the side wall of cope 1 and drag box 2, in screw hole
Internal screw thread is arranged in 1 upper half of cope and 2 lower half of drag box；1 lower half of cope and 2 upper half of drag box are non-threaded logical
Hole, the internal diameter of non-threaded through hole section are greater than the internal diameter of thread segment；As shown in figure 3, in cope 1 and drag box 2 through hole section it is outer
Wall is equipped with pin hole 100, and the baffle 5 that setting can be rotated along sand mold outer wall on the outside of pin hole 100, the section of baffle 5 is in " 7 " font, preceding
The clamping portion 51 of perpendicularly inward stretching is arranged in end, and the right side setting of the baffle 5 is used for the clamping groove 6 of fixed baffle 5, clamping groove
6 opening upwards；
As shown in Figure 2 and Figure 4, kicker magnet lantern ring 103 is set in the through hole section of screw hole；Kicker magnet lantern ring 103 is respectively by semi-circular
The pole N and the pole S constitute；Setting pad pipe 101 in kicker magnet lantern ring 103, pad pipe 101 by along axisymmetrical left part and right part splice
It forms；Outside bending part is arranged in the top and bottom of pad pipe 101；Pad 101 surface of pipe be equipped with outside cope 1 and drag box 2
Corresponding pin hole 100 on wall；Ripple spring 102 is also arranged in gap between 101 outside of pad pipe and screw hole；
The external screw thread that 31 upper section of screw rod and the lower section setting of bolt 3 match with internal screw thread in screw hole, the middle section surface of screw rod 31
Non-threaded, the contractible neck 32 that two diameters are gradually reduced is arranged in the middle section of screw rod 31；Contractible neck 32 is located at the installation of screw rod 31
The corresponding position of pin hole 100 in cope 1 and drag box 2 afterwards；
Spacer pin 4 is set in pin hole 100, and U-type groove 41, the edge setting and contraction of 41 front end of U-type groove is arranged in 4 front end of spacer pin
The chamfering that the shape of neck 32 matches.
Wherein, the top of bolt 3 is equipped with nut 30, and bottom end is provided by nut 33, the number of nut 33 of bottom end connection
Amount is two, buffer gasket is equipped with above the nut 33 of inside, wherein be also provided with buffer gasket below nut 30.
The connection of double nut 33 can produce self-locking, and nut 33 is avoided to spin and loosen on bolt；Gasket can be inhaled
The active force for receiving 31 axis direction of screw rod, promotes the anti seismic efficiency of sand mold.
When the sand mold assembles, cope 1 and drag box 2 are assembled, then bolt 3 is inserted into screw hole and is screwed, is passed through
Pin hole 100 on cope 1 and drag box 2 observes the position of contractible neck 32 in bolt 3, and neck 32 to be stretched is at pin hole 100
When, spacer pin 4 is inserted into pin hole 100, then clamping bolt 3 again turns to baffle 5 at pin hole 100, so that baffle
The clamping portion 51 of 5 front ends is inserted into clamping groove 6, at this point, baffle 5 pushes against spacer pin 4.3 bottom of bolt is finally passed through into double spiral shells
Mother 33 is locked.
The sand mold is in use, fill roughing sand into sandbox, and by crumpling, squeezing, the modes such as vibration compress roughing sand；Then
Again to the intracavitary casting for carrying out molten metal of type；After part is cooled and shaped, the nut 33 of 3 lower section of bolt is removed, it then will gear
The rotation of plate 5 is opened, and spacer pin 4 is pulled up, and finally screws out bolt 3.
Spacer pin 4 is inserted into pin hole 100 to be turned in clamping groove 6 after locking with 3 clamping of bolt, baffle 5；Spacer pin 4
Tail end pushes against baffle 5 just.The effect of spacer pin 4 is mainly fixed bolt 3, has both prevented bolt 3 in vibration processes
Occur spin loosen and the problem of along axis shift；It can also occur because of heated perpendicular to axis side to avoid 31 middle section of screw rod
To deformation, cause screw rod 31 to be difficult to take out.
Kicker magnet lantern ring 103 is prepared by the Al-Ni-Co permanent magnet with high-curie temperature；As shown in Figures 2 and 4, Qiang Ci
Body lantern ring 103 is sheathed on 101 outside of pad pipe, is fixedly connected by resilient snubber therebetween, and kicker magnet lantern ring 103 is outer
Diameter is less than the outer diameter of ripple spring 102.
The effect of bolster is to prevent the pad deformation of pipe 101 from impacting to the structural intergrity of kicker magnet lantern ring 103, Qiang Ci
The outer diameter of body lantern ring 103 is relatively small, can also to avoid it is extruded and stress damage.
The quantity of kicker magnet lantern ring 103 is multiple in screw hole, is axially uniformly distributed along pad pipe 101.
The main function of kicker magnet lantern ring 103 is to form magnetic field, and sand mold use process is reduced by way of magnetic absorption
Middle effect of vibration is influenced caused by the connection effect between screw rod 31 and pad pipe 101；The setting of kicker magnet lantern ring 103 is for low
The high-frequency vibration of amplitude has preferable neutralization effect；Bonding strength between 31 middle section of screw rod and screw hole can be enhanced.
Ripple spring 102 can be selected multi-disc annular ripple spring leaf and carry out laminating combination, or use the one through 3D printing
Formula ripple spring 102.
The effect of ripple spring 102 is to make when the cooling heat release of molten metal causes roughing sand to expand to structures such as gaskets 101
At deformation effect effectively absorbed, avoid impacting 31 structure of screw rod, prevent 31 bending of screw rod；Be beneficial to part at
Demoulding after type.
Bolt 3 and spacer pin 4 are prepared by the high-speed steel of low thermal coefficient of expansion.
Bolt 3 and spacer pin 4 use high speed steel material, can after absorbing heat, utmostly keep structural strength with
The stabilization of property maintains the stable structure of sand mold, reduces the ratio of defects of forming part.
The nut 30 of bolt 3 is the hexagonal (hexagon)nut of standard, also sets up interior hex slot at the top of nut 30.
Outer-hexagonal and interior hexagonal structure are respectively set in nut 30, therefore different works can be used during screwing
Tool.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, although referring to aforementioned reality
Applying example, invention is explained in detail, for those skilled in the art, still can be to aforementioned each implementation
Technical solution documented by example is modified.All within the spirits and principles of the present invention, it is made it is any modification, equally replace
It changes, improve, should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of double case sand molds for aluminum alloy spare part casting, including cope and drag box, cope and drag box are logical
It crosses bolt to fix, it is characterised in that: perforative screw hole up and down is arranged in the side wall of the cope and drag box, in the screw hole
Internal screw thread is arranged in the cope upper half and drag box lower half；The cope lower half and the drag box upper half are non-threaded logical
Hole, the internal diameter of the non-threaded through hole section are greater than the internal diameter of thread segment；The outer wall of through hole section is set in the cope and drag box
Have a pin hole, the baffle that setting can be rotated along sand mold outer wall on the outside of pin hole, the section of baffle is in " 7 " font, front end setting vertically to
The clamping portion of interior stretching, the right side setting of the baffle are used for the clamping groove of fixed baffle, the opening upwards of clamping groove；
Kicker magnet lantern ring is set in the through hole section of the screw hole；Kicker magnet lantern ring is made of the semiorbicular pole N and the pole S respectively；By force
Setting pad pipe in magnet lantern ring, pad pipe by along axisymmetrical left part and right part be spliced；Pad the top and bottom setting of pipe
Outside bending part；Pipe surface is padded to be equipped with and corresponding pin hole on cope and drag box outer wall；Pad pipe on the outside of with screw hole it
Between gap in be also arranged with ripple spring；
Screw rod upper section and the lower section setting of the bolt and the external screw thread that matches of internal screw thread in screw hole, the middle section surface of screw rod without
The contractible neck that two diameters are gradually reduced is arranged in screw thread, the middle section of screw rod；Contractible neck be located at screw rod installation after cope and
The corresponding position of pin hole in drag box；
Spacer pin is set in the pin hole, and U-type groove, edge setting and the contractible neck of U-type groove front end is arranged in spacer pin front end
The chamfering that shape matches.
2. a kind of double case sand molds for aluminum alloy spare part casting according to claim 1, it is characterised in that: the spiral shell
The top of bolt is equipped with nut, and bottom end is provided by nut, and the nut quantity of the bottom end connection is two, positioned inside
Buffer gasket is equipped with above nut, wherein be also provided with buffer gasket below nut.
3. a kind of double case sand molds for aluminum alloy spare part casting according to claim 1, it is characterised in that: the limit
Position pin be inserted into pin hole with bolt clamping, after flapper is locked into clamping groove；Spacer pin tail end pushes against baffle just.
4. a kind of double case sand molds for aluminum alloy spare part casting according to claim 1, it is characterised in that: described strong
Magnet lantern ring is prepared by the Al-Ni-Co permanent magnet with high-curie temperature；Kicker magnet lantern ring is sheathed on the outside of pad pipe, the two
Between be fixedly connected by resilient snubber, and the outer diameter of kicker magnet lantern ring be less than ripple spring outer diameter.
5. a kind of double case sand molds for aluminum alloy spare part casting according to claim 1, it is characterised in that: the spiral shell
The quantity of kicker magnet lantern ring is multiple in hole, is axially uniformly distributed along pad pipe.
6. a kind of double case sand molds for aluminum alloy spare part casting according to claim 1, it is characterised in that: the wave
Bellows spring can be selected multi-disc annular ripple spring leaf and carry out laminating combination, or use the integral type ripple spring through 3D printing.
7. a kind of double case sand molds for aluminum alloy spare part casting according to claim 1, it is characterised in that: described
Bolt and spacer pin are prepared by the high-speed steel of low thermal coefficient of expansion.
8. a kind of double case sand molds for aluminum alloy spare part casting according to claim 1, it is characterised in that: the spiral shell
The nut of bolt is the hexagonal (hexagon)nut of standard, also sets up interior hex slot at the top of nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910391919.0A CN110064738B (en) | 2019-05-13 | 2019-05-13 | Double-box sand mold for casting aluminum alloy parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910391919.0A CN110064738B (en) | 2019-05-13 | 2019-05-13 | Double-box sand mold for casting aluminum alloy parts |
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| CN110064738A true CN110064738A (en) | 2019-07-30 |
| CN110064738B CN110064738B (en) | 2020-12-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114210923A (en) * | 2021-12-07 | 2022-03-22 | 青岛连山铸造有限公司 | Novel coupler mold integrating coupler body and coupler knuckle and using method thereof |
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| CN107932697A (en) * | 2017-12-15 | 2018-04-20 | 周兆弟 | A kind of die bolt |
| CN207900182U (en) * | 2017-12-29 | 2018-09-25 | 江阴新长机械配件有限公司 | A kind of sandbox being provided with the double pressure head clamp assemblies of die joint flange |
| CN208825492U (en) * | 2018-10-14 | 2019-05-07 | 周口师范学院 | A kind of sandbox convenient for positioning with fixing |
| CN109226695A (en) * | 2018-11-19 | 2019-01-18 | 江苏中科纽克生态科技有限公司 | A kind of moulding machine sandbox import connection sealing structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114210923A (en) * | 2021-12-07 | 2022-03-22 | 青岛连山铸造有限公司 | Novel coupler mold integrating coupler body and coupler knuckle and using method thereof |
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