CN109128034A - A kind of contact precoated sand mold - Google Patents
A kind of contact precoated sand mold Download PDFInfo
- Publication number
- CN109128034A CN109128034A CN201811352440.8A CN201811352440A CN109128034A CN 109128034 A CN109128034 A CN 109128034A CN 201811352440 A CN201811352440 A CN 201811352440A CN 109128034 A CN109128034 A CN 109128034A
- Authority
- CN
- China
- Prior art keywords
- sand
- mold
- lower die
- hole
- convex platform
- 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.)
- Pending
Links
- 239000004576 sand Substances 0.000 title claims abstract description 65
- 230000000149 penetrating effect Effects 0.000 claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 238000000465 moulding Methods 0.000 claims abstract description 7
- 238000009434 installation Methods 0.000 claims description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000007812 deficiency Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 11
- 238000005266 casting Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000004927 fusion Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000002679 ablation Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Classifications
-
- 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
- B22C9/02—Sand moulds or like moulds for shaped castings
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Devices For Molds (AREA)
Abstract
The invention proposes a kind of contact precoated sand molds, 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, penetrated Sha Kou and be connected to upper model cavity, be additionally provided with boss 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 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 contact precoated sand mold.
The technical scheme of the present invention is realized as follows:
A kind of contact precoated sand mold, mold include upper die and lower die, are equipped between the upper die and lower die for manufacturing touching
The sand shell cavity of head, the sand shell cavity is made of upper model cavity and drag chamber, sets that there are two prolates in the upper mold front end
Shape penetrates Sha Kou, and the sand mouth of penetrating is connected to the upper model cavity, is additionally provided with boss in the front end of the mold, the boss by
Convex platform and lower convex platform composition in the upper mold and the lower die, set respectively on the convex platform and the lower convex platform
Have for molding fixed fixation hole.
The upper model cavity is made of the first type chamber and second type chamber, and the lower die is by third type chamber and the 4th type chamber group
At, be also provided with air discharge duct in the upper surface of the upper mold, the air discharge duct be located around the upper model cavity rear side and
Between the left and right sides and the first type chamber and second type chamber, the edge four corners along the upper mold upper surface are respectively provided with one
Boss rises, and the boss rises and is respectively positioned on the air discharge duct.
Location hole, big centre hole, small centre hole, tooling hole, bottoming hole are also provided in the upper mold and the lower die,
The mold is navigated to correct installation site in correspondence with each other by the location hole on the upside of the upper mold and on the upside of the lower die, described
Big centre hole setting is in the mold quadrangle and runs through the upper mold and the lower die, and the small centre hole is separately positioned on described
The bottom of upper model cavity and the drag chamber and vertically run through the upper mold and the lower die, the tooling hole is arranged described
The back side of mold penetrates sand position by what the mold can be installed to penetrating sand machine by the tooling hole, and the bottoming hole is located at described
The bottom of upper model cavity and the drag chamber and extend transversely through the upper mold and the lower die.
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.
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 contact precoated sand mold, mold includes upper mold 1 and lower die 2, in upper mold 1 and lower die 2
Between be equipped with sand shell cavity for contact casting and forming, sand shell cavity is formed after being molded by upper model cavity 3 and drag chamber 4
Type chamber.
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 air discharge duct 7 between the first type chamber 5 and the outside and the first type chamber 5 and second type chamber 6 of second type chamber 6, row
It is connected between air drain 7, due to the type chamber that second type chamber 6 is deep trouth, the air discharge duct 7 positioned at 6 three side of second type chamber can accelerate type
Intracavitary gas discharge.
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 contact precoated sand mold, it is characterised in that: mold includes upper die and lower die, is set between the upper die and lower die
There is the sand shell cavity for manufacturing contact, the sand shell cavity is made of upper model cavity and drag chamber, in the upper mold front end
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.
2. contact precoated sand mold according to claim 1, it is characterised in that: the upper model cavity is by the first type chamber and
Two type chambers composition, the lower die are made of third type chamber and the 4th type chamber, are 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.
3. contact precoated sand mold according to claim 1, it is characterised in that: also opened in the upper mold and the lower die
Location hole equipped with location hole, big centre hole, small centre hole, tooling hole, bottoming hole, on the upside of the upper mold and on the upside of the lower die
The mold is navigated into correct installation site in correspondence with each other, the big centre hole setting is in the mold quadrangle and runs through institute
State upper mold and the lower die, the small centre hole is separately positioned on the bottom of the upper model cavity and the drag chamber and vertical
Through the upper mold and the lower die, the back side of the mold is arranged in the tooling hole, can will be described by the tooling hole
What mold was installed to penetrating sand machine penetrates sand position, and the bottoming hole is located at bottom and the transverse direction of the upper model cavity and the drag chamber
Through the upper mold and the lower die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811352440.8A CN109128034A (en) | 2018-11-14 | 2018-11-14 | A kind of contact precoated sand mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811352440.8A CN109128034A (en) | 2018-11-14 | 2018-11-14 | A kind of contact precoated sand mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109128034A true CN109128034A (en) | 2019-01-04 |
Family
ID=64805947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811352440.8A Pending CN109128034A (en) | 2018-11-14 | 2018-11-14 | A kind of contact precoated sand mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109128034A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111069541A (en) * | 2020-01-19 | 2020-04-28 | 艾堡（泊头）自动化设备有限公司 | High molding line system of security |
-
2018
- 2018-11-14 CN CN201811352440.8A patent/CN109128034A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111069541A (en) * | 2020-01-19 | 2020-04-28 | 艾堡（泊头）自动化设备有限公司 | High molding line system of security |
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| Date | Code | Title | Description |
|---|---|---|---|
| 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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190104 |