CN109158539A - A kind of upper mold for contact precoated sand mold - Google Patents
A kind of upper mold for contact precoated sand mold Download PDFInfo
- Publication number
- CN109158539A CN109158539A CN201811352439.5A CN201811352439A CN109158539A CN 109158539 A CN109158539 A CN 109158539A CN 201811352439 A CN201811352439 A CN 201811352439A CN 109158539 A CN109158539 A CN 109158539A
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- CN
- China
- Prior art keywords
- sand
- mold
- upper mold
- type chamber
- hole
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
- B22C15/23—Compacting by gas pressure or vacuum
- B22C15/24—Compacting by gas pressure or vacuum involving blowing devices in which the mould material is supplied in the form of loose particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Devices For Molds (AREA)
Abstract
The invention proposes a kind of upper molds for contact precoated sand mold, it include: mold include upper die and lower die, the sand shell cavity for manufacturing contact is equipped between upper die and lower die, sand shell cavity is made of upper model cavity and drag chamber, it is set in upper mold front end and penetrates Sha Kou there are two prolate shape, Sha Kou is penetrated to be connected to upper model cavity, boss is additionally provided in the front end of mold, boss is made of the convex platform and lower convex platform being located on upper die and lower die, and the fixed fixation hole of molding is respectively provided on convex platform and lower convex platform.The beneficial effect is that: the present invention penetrates Sha Kou by the way that setting is biggish, when the precoated sand penetrated in sand mouth enters in type chamber, it is biggish that penetrate sand mouth larger into sand amount, the speed for penetrating sand is slower, both the efficiency for penetrating sand mouth had been ensure that, it can lead to burning into sand and sand leakage caused by exhaust deficiency again to avoid because penetrating sand excessive velocities.
Description
Technical field
The present invention relates to core shooter tooling fields, particularly relate to a kind of upper mold for contact precoated sand mold.
Background technique
Currently, China's casting industry generallys use hot box to manufacture sand core.Its manufacturing process approximately as: will casting use
The sand material that sand, thermosetting resin and catalyst are mixed into is injected into the core box with heating device by core shooter, is heated to
250 to 320 degrees Celsius, keep the sand material close to box surface heated, the binder in sand material in a short period of time can polycondensation
Hardening, and then shape forming core.The type that foundry sand generally injects hot core box mould by sand shooting mouth is intracavitary.
In existing electromechanical industries, contact is one of critical component of device for switching, the main performance of device for switching and longevity
The length of life depends greatly on the quality of contact material；Contact material usually require that with good electric conductivity, compared with
Low contact resistance, higher resistance fusion welding energy, higher resistance to arc erosion energy and anti-material transfer ability touches vacuum
Head material also requires to shut off to be worth that small, compressive resistance is high and breaking capacity is high, and the structure of contact material has its macro property important
Influence, the electrical property of contact material, as resistance fusion welding, arc ablation resistance and voltage endurance capability not only with composition contact material at
It is part related, and surface roughness after molding is related, the manufacture of contact it is general first using casting by the way of, casting and forming is laggard
The subsequent machining of row, keeps its surface clean and tidy, cuts away rim charge, so when manufacturing the arenaceous shell mold of contact, by mold institute
The depth for the type chamber to be opened up is bigger, so need to increase accordingly the size for penetrating sand mouth, and the size of air discharge duct and penetrates
The influence that the structure of sand mouth casts to the later period is very big, and unreasonable setting easilys lead to casting rejection rate and increases.
Summary of the invention
The present invention is existing to solve the problems, such as, proposes a kind of upper mold for contact precoated sand mold.
The technical scheme of the present invention is realized as follows:
A kind of upper mold for contact precoated sand mold, including upper mold, offer by the first type chamber in the upper mold upper surface and
The upper model cavity of second type chamber composition, the first type chamber middle part are equipped with rectangular recess, also set in the middle part of the second type chamber
There is the rectangular recess, the first type chamber and the second type chamber are all divided into symmetrical two respectively by the rectangular recess
The subtype chamber of subtype chamber, the first type chamber is symmetrical with the center line of the rectangular recess, the subtype chamber of the second type chamber
Also symmetrical with the center line of the rectangular recess；Air discharge duct, the exhaust slot position are also provided in the upper surface of the upper mold
Between the rear side and the left and right sides and the first type chamber and second type chamber for being looped around the upper model cavity, along the upper mold
The edge four corners of upper surface are respectively provided with a boss and rise, and the boss rises and is respectively positioned on the air discharge duct.
It is additionally provided with the Sha Kou that penetrates of two prolate shapes in the upper mold front end, the sand mouth of penetrating is connected to the upper model cavity,
It is additionally provided with boss in the front end of the mold, the boss is by the convex platform and lower convex platform in the upper mold and the lower die
Composition is respectively provided with the fixed fixation hole of molding on the convex platform and the lower convex platform.
Location hole, big centre hole, small centre hole, tooling hole, bottoming hole, the location hole are also provided in the upper mold
By the way that mold is navigated to correct installation site in correspondence with each other, the big centre hole is arranged in the quadrangle of the upper mold and runs through
The upper mold, the small centre hole are separately positioned on the bottom of the upper model cavity and vertically through the upper mold, the toolings
The back side of the upper mold is arranged in hole, penetrates sand position, the bottoming hole by what upper mold can be installed to penetrating sand machine by the tooling hole
Positioned at the upper model cavity bottom and extend transversely through the upper mold.
The beneficial effects of the present invention are:
1. the present invention penetrates Sha Kou by the way that setting is biggish, biggish to penetrate Sha Kou when the precoated sand penetrated in sand mouth is entered in type chamber
Larger into sand amount, the speed for penetrating sand is slower, not only ensure that the efficiency for penetrating sand mouth, but also can cause to avoid because penetrating sand excessive velocities
Burning into sand and sand leakage caused by exhaust is insufficient；
2. due to use self chamber combine mode, cast out through the invention contact processing reduce, save material and
Artificial cost, easily realization automated production；
3. side's setting boss before a mold, so that the installation of mold and penetrating sand machine and more convenient accurate with the fixation of sand shooting mouth,
It is time saving and energy saving；
4. increase the arenaceous shell casting number of single type chamber by the way that symmetrical subtype chamber is arranged, while improving casting efficiency,
Reduce the subsequent processing operations of casting.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of contact；
Fig. 2 is structural schematic diagram of the invention；
Fig. 3 is the structural schematic diagram of upper mold；
Fig. 4 is the main view of upper mold；
Fig. 5 is the rearview of upper mold；
Fig. 6 is the structural schematic diagram of lower die；
Fig. 7 is the main view of lower die；
Fig. 8 is the rearview of lower die.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under that premise of not paying creative labor
Embodiment shall fall within the protection scope of the present invention.
As shown in Fig. 1 ~ Fig. 8, a kind of upper mold for contact precoated sand mold, upper mold 1 and lower die 2 collectively constitute one it is whole
Mold is equipped with the sand shell cavity for contact casting and forming between upper mold 1 and lower die 2, and sand shell cavity is by upper model cavity 3
The type chamber formed after being molded with drag chamber 4.
Upper model cavity 3 is made of the first type chamber 5 and second type chamber 6, and the first type chamber 5 is a shallow slot, and second type chamber 6 is one
Deep trouth is equipped with rectangular recess 19 in the middle part of the first type chamber 5, rectangular recess 19 also is provided in the middle part of second type chamber 6, rectangle is recessed
First type chamber 5 and second type chamber 6 are all divided into symmetrical two subtype chambers respectively by slot 19, and the subtype chamber of the first type chamber 5 is with rectangle
The center line of groove 19 is symmetrical, and the subtype chamber of second type chamber 6 is also symmetrical with the center line of rectangular recess 19, rectangular by being arranged
Upper model cavity is divided into four subtype chambers by connected in star, this ensure that both ensure that neat segmentation when multi-cavity is cast simultaneously
Point ensure that precoated sand can adequately fill up entire type chamber further through the setting of groove；In the outer of the first type chamber 5 and second type chamber 6
It is equipped with air discharge duct 7 between side and the first type chamber 5 and second type chamber 6, is connected between air discharge duct 7, since second type chamber 6 is deep
The type chamber of slot, the air discharge duct 7 positioned at 6 three side of second type chamber can accelerate the intracavitary gas discharge of type.
It is set in 1 front end of upper mold and penetrates sand mouth 8 there are two prolate shape, penetrated sand mouth 8 and be connected to upper model cavity 3, using such knot
Structure penetrates sand mouth 8, and due to relatively flat in upper model cavity 3, but cavity is larger, can be with so penetrate sand mouth 8 using flat
Increase and penetrate the efficiency of sand, and sand mold is not easy to produce burning into sand or sand leakage, be additionally provided with boss 9 in the front end of mold, boss 9 by
Convex platform 9-1 in upper mold 1 and lower die 2 and lower convex platform 9-2 composition, boss 9 are located at the front end of entire mold, positioned at penetrating sand
At mouth 8, it is connect at this for the sand shooting mouth with penetrating sand machine, the setting of boss 9 can make the installation of mold and sand shooting mouth more square
Just and accurately, it is respectively provided with the fixed fixation hole 10 of molding on convex platform 9-1 and lower convex platform 9-2, makes in fixation hole 10
Molding can be made tighter with connecting rod, increase the firmness of upper mold 1 and lower die 2.
It is also provided with air discharge duct 7 in the upper surface of upper mold 1, air discharge duct 7 is located around rear side and left and right in upper model cavity 3
Between two sides and the first type chamber 5 and second type chamber 6；Since the range of air discharge duct setting is bigger, it is vented in the vertical direction
Slot is lower than 1 upper surface of upper mold, so being respectively provided with a boss in the edge four corners along 1 upper surface of upper mold plays 11, boss plays 11
It is respectively positioned on air discharge duct 7, what boss 11 was generally flush with 1 upper surface of upper mold, upper mold 1 and lower die 2 when can prevent from molding fixed
Dislocation inclination occurs.
Lower die 2 is made of third type chamber 12 and the 4th type chamber 13, and third type chamber 12 is corresponding with the first type chamber 5 in upper mold 1,
4th type chamber 13 is corresponding with second type chamber 6.
Location hole 14, big centre hole 15, small centre hole 16, tooling hole 17, heating are also provided in upper mold 1 and lower die 2
Mold is navigated to correct installation site, big thimble in correspondence with each other by the location hole 14 in hole 18,2 upside of 1 upside of upper mold and lower die
The setting of hole 15 is in mold quadrangle and runs through upper mold 1 and lower die 2, and small centre hole 16 is separately positioned on model cavity 3 and drag chamber 4
Bottom and vertically run through upper mold 1 and lower die 2, tooling hole 17 is arranged in the back side of mold, can be pacified mold by tooling hole 17
Be attached to penetrating sand machine penetrates sand position, and bottoming hole 18 is located at the bottom of upper model cavity 3 and drag chamber 4 and extends transversely through upper mold 1 under
Mould 2.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (3)
1. a kind of upper mold for contact precoated sand mold, it is characterised in that: including upper mold, offered in the upper mold upper surface
The upper model cavity being made of the first type chamber and second type chamber, the first type chamber middle part is equipped with rectangular recess, described second
Also is provided with the rectangular recess in the middle part of type chamber, the rectangular recess respectively by the first type chamber and the second type chamber all
It is divided into symmetrical two subtype chambers, the subtype chamber of the first type chamber is symmetrical with the center line of the rectangular recess, and described second
The subtype chamber of type chamber is also symmetrical with the center line of the rectangular recess；It is also provided with air discharge duct in the upper surface of the upper mold,
The air discharge duct be located around the rear side of the upper model cavity and the left and right sides and the first type chamber and second type chamber it
Between, the edge four corners along the upper mold upper surface are respectively provided with a boss and rise, and the boss rises and is respectively positioned on the air discharge duct.
2. the upper mold according to claim 1 for contact precoated sand mold, it is characterised in that: the upper mold front end also
If penetrating Sha Kou there are two prolate shape, the sand mouth of penetrating is connected to the upper model cavity, is additionally provided in the front end of the mold convex
Platform, the boss is made of the convex platform and lower convex platform being located in the upper mold and the lower die, in the convex platform and described
The fixed fixation hole of molding is respectively provided on lower convex platform.
3. the upper mold according to claim 1 for contact precoated sand mold, it is characterised in that: also opened in the upper mold
Equipped with location hole, big centre hole, small centre hole, tooling hole, bottoming hole, the location hole is by correspondence with each other navigating to mold
Correct installation site, the big centre hole are arranged in the quadrangle of the upper mold and through the upper mold, the small centre holes point
The bottom of the upper model cavity is not set and vertically runs through the upper mold, the back side of the upper mold is arranged in the tooling hole,
Penetrate sand position by what upper mold can be installed to penetrating sand machine by the tooling hole, the bottoming hole be located at the bottom of the upper model cavity and
Extend transversely through the upper mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811352439.5A CN109158539A (en) | 2018-11-14 | 2018-11-14 | A kind of upper mold for contact precoated sand mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811352439.5A CN109158539A (en) | 2018-11-14 | 2018-11-14 | A kind of upper mold for contact precoated sand mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109158539A true CN109158539A (en) | 2019-01-08 |
Family
ID=64877014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811352439.5A Pending CN109158539A (en) | 2018-11-14 | 2018-11-14 | A kind of upper mold for contact precoated sand mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109158539A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004001083A (en) * | 2002-03-29 | 2004-01-08 | Hitachi Metals Ltd | Green sand core, method and device for molding it and cast member obtained by them |
| CN103736924A (en) * | 2013-12-24 | 2014-04-23 | 上海亚德林有色金属有限公司 | Mold for core block |
| CN104889342A (en) * | 2015-06-03 | 2015-09-09 | 天津市航宇金属加工有限公司 | Device for once blow molding of sand cores and chillers |
| CN106001445A (en) * | 2016-07-20 | 2016-10-12 | 焦祥静 | Precoated sand die of hoop |
| CN107052238A (en) * | 2017-06-26 | 2017-08-18 | 禹州市昆仑模具有限公司 | A kind of core mould of front suspension after-poppet |
| CN206882706U (en) * | 2017-06-26 | 2018-01-16 | 禹州市昆仑模具有限公司 | Rear suspension support hot core box for casting mould |
| CN206936290U (en) * | 2017-06-26 | 2018-01-30 | 禹州市昆仑模具有限公司 | A kind of precoated sand mould of disjunctor bracket |
-
2018
- 2018-11-14 CN CN201811352439.5A patent/CN109158539A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004001083A (en) * | 2002-03-29 | 2004-01-08 | Hitachi Metals Ltd | Green sand core, method and device for molding it and cast member obtained by them |
| CN103736924A (en) * | 2013-12-24 | 2014-04-23 | 上海亚德林有色金属有限公司 | Mold for core block |
| CN104889342A (en) * | 2015-06-03 | 2015-09-09 | 天津市航宇金属加工有限公司 | Device for once blow molding of sand cores and chillers |
| CN106001445A (en) * | 2016-07-20 | 2016-10-12 | 焦祥静 | Precoated sand die of hoop |
| CN107052238A (en) * | 2017-06-26 | 2017-08-18 | 禹州市昆仑模具有限公司 | A kind of core mould of front suspension after-poppet |
| CN206882706U (en) * | 2017-06-26 | 2018-01-16 | 禹州市昆仑模具有限公司 | Rear suspension support hot core box for casting mould |
| CN206936290U (en) * | 2017-06-26 | 2018-01-30 | 禹州市昆仑模具有限公司 | A kind of precoated sand mould of disjunctor bracket |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190108 |
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| RJ01 | Rejection of invention patent application after publication |