CN109158538A - A kind of lower die for contact precoated sand mold - Google Patents
A kind of lower die for contact precoated sand mold Download PDFInfo
- Publication number
- CN109158538A CN109158538A CN201811352438.0A CN201811352438A CN109158538A CN 109158538 A CN109158538 A CN 109158538A CN 201811352438 A CN201811352438 A CN 201811352438A CN 109158538 A CN109158538 A CN 109158538A
- Authority
- CN
- China
- Prior art keywords
- lower die
- sand
- hole
- mold
- chamber
- 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
Classifications
-
- 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
- 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
Abstract
The invention proposes a kind of lower dies for contact precoated sand mold, it include: mold include lower die and lower die, the sand shell cavity for manufacturing contact is equipped between lower die and lower die, sand shell cavity is made of drag chamber and drag chamber, it is set in lower die front end and penetrates Sha Kou there are two prolate shape, sand mouth is penetrated to be connected to drag chamber, boss is additionally provided in the front end of mold, boss is made of the convex platform and lower convex platform being located in lower 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 lower die 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 lower die for contact precoated sand mold.
The technical scheme of the present invention is realized as follows: a kind of lower die for contact precoated sand mold, including lower die,
The lower die upper surface offers the drag chamber being made of third type chamber and the 4th type chamber, is additionally provided with the 4th type is intracavitary
Mold cavity under four groups offers a circle edge strip around the outer edge of the drag chamber, and the edge strip upper surface is lower than described
Lower die upper surface 4.5cm ~ 7.5cm offers several small centre holes on the edge strip.
Location hole, big centre hole, tooling hole, bottoming hole are also provided in the lower die, the location hole passes through mutual
It is corresponding that mold is navigated into correct installation site, under the big centre hole is arranged in the quadrangle of the lower die and runs through described
Mould, the small centre hole are separately positioned on the bottom of the drag chamber and vertically through the lower die, the tooling hole settings
In the back side of the lower die, sand position is penetrated by what lower die can be installed to penetrating sand machine by the tooling hole, the bottoming hole is located at institute
It states the bottom of drag chamber and extends transversely through 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；
4. edge strip, which is arranged, ensure that the thickness of arenaceous shell wall after arenaceous shell molding, reduce the rejection rate of successive castings.
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 lower die；
Fig. 4 is the main view of lower die；
Fig. 5 is the rearview of lower die；
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 lower die for contact precoated sand mold, mold includes lower die 1 and lower die 2, under
The sand shell cavity for contact casting and forming is equipped between mould 1 and lower die 2, sand shell cavity is by drag chamber 3 and drag chamber 4
The type chamber formed after molding.
Drag chamber 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 lower die and penetrates sand mouth 8 there are two prolate shape, penetrated sand mouth 8 and be connected to drag chamber 3, using such knot
Structure penetrates sand mouth 8, and due to relatively flat in drag chamber 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 lower die 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 lower die 1 and lower die 2.
It is also provided with air discharge duct 7 in the upper surface of lower die 1, air discharge duct 7 is located around rear side and left and right in drag chamber 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 lower die, so being respectively provided with a boss in the edge four corners along 1 upper surface of lower die 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 lower die, lower die 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 lower die 1,
4th type chamber 13 is corresponding with second type chamber 6, and the lower die being made of third type chamber 5 and the 4th type chamber 6 is offered in 2 upper surface of lower die
Type chamber 4, mold cavity 20 under being additionally provided with four groups in the 4th type chamber 6, the outer edge around drag chamber 4 offer a circle edge strip
21,21 upper surface of edge strip is lower than lower die upper surface 4.5cm ~ 7.5cm, and several small centre holes 16, edge strip are offered on edge strip 21
Setting can guarantee arenaceous shell thickness after molding, avoid arenaceous shell form after arenaceous shell wall thickness it is blocked up or excessively thin caused by casting
Make defect.
Location hole 14, big centre hole 15, small centre hole 16, tooling hole 17, heating are also provided in lower die 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 lower die and lower die
The setting of hole 15 is in mold quadrangle and runs through lower die 1 and lower die 2, and small centre hole 16 is separately positioned on drag chamber 3 and drag chamber 4
Bottom and vertically run through lower die 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 drag chamber 3 and drag chamber 4 and extends transversely through lower die 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 (2)
1. a kind of lower die for contact precoated sand mold, it is characterised in that: including lower die, offered in the lower die upper surface
The drag chamber being made of third type chamber and the 4th type chamber, the 4th type is intracavitary be additionally provided with four groups under mold cavity, surround
The outer edge of the drag chamber offers a circle edge strip, the edge strip upper surface lower than the lower die upper surface 4.5cm ~
7.5cm offers several small centre holes on the edge strip.
2. the lower die according to claim 1 for contact precoated sand mold, it is characterised in that: also opened in the lower die
Equipped with location hole, big centre hole, tooling hole, bottoming hole, the location hole is by navigating to correct peace for mold in correspondence with each other
Holding position, the big centre hole are arranged in the quadrangle of the lower die and through the lower dies, and the small centre hole is separately positioned on
The bottom of the drag chamber and vertically run through the lower die, the back side of the lower die is arranged in the tooling hole, by described
What lower die can be installed to penetrating sand machine by tooling hole penetrates sand position, and the bottoming hole is located at the bottom of the drag chamber and extends transversely through
The lower die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811352438.0A CN109158538A (en) | 2018-11-14 | 2018-11-14 | A kind of lower die for contact precoated sand mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811352438.0A CN109158538A (en) | 2018-11-14 | 2018-11-14 | A kind of lower die for contact precoated sand mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109158538A true CN109158538A (en) | 2019-01-08 |
Family
ID=64876975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811352438.0A Pending CN109158538A (en) | 2018-11-14 | 2018-11-14 | A kind of lower die for contact precoated sand mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109158538A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58192651A (en) * | 1982-05-06 | 1983-11-10 | Honda Motor Co Ltd | Production of casting mold |
| EP0788855A1 (en) * | 1996-02-09 | 1997-08-13 | Ryobi Ltd. | Casting device for producing closed deck type cylinder block and sand core used in the device |
| CN105583372A (en) * | 2016-03-21 | 2016-05-18 | 禹州市昆仑模具有限公司 | Sand core lower mould of pipe-clip sand core mould |
| CN107138682A (en) * | 2017-06-21 | 2017-09-08 | 禹州市昆仑模具有限公司 | A kind of half cast core of bucket tooth precoated sand mould |
| CN206568464U (en) * | 2017-02-28 | 2017-10-20 | 江阴精力模具工程有限公司 | A kind of automobile door sill mould |
| CN206925284U (en) * | 2017-06-26 | 2018-01-26 | 禹州市昆仑模具有限公司 | It is a kind of to lengthen the precoated sand mould for stretching fork |
| 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 CN201811352438.0A patent/CN109158538A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58192651A (en) * | 1982-05-06 | 1983-11-10 | Honda Motor Co Ltd | Production of casting mold |
| EP0788855A1 (en) * | 1996-02-09 | 1997-08-13 | Ryobi Ltd. | Casting device for producing closed deck type cylinder block and sand core used in the device |
| CN105583372A (en) * | 2016-03-21 | 2016-05-18 | 禹州市昆仑模具有限公司 | Sand core lower mould of pipe-clip sand core mould |
| CN206568464U (en) * | 2017-02-28 | 2017-10-20 | 江阴精力模具工程有限公司 | A kind of automobile door sill mould |
| CN107138682A (en) * | 2017-06-21 | 2017-09-08 | 禹州市昆仑模具有限公司 | A kind of half cast core of bucket tooth precoated sand mould |
| CN206925284U (en) * | 2017-06-26 | 2018-01-26 | 禹州市昆仑模具有限公司 | It is a kind of to lengthen the precoated sand mould for stretching fork |
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105750515A (en) | Small-capacity master alloy casting system | |
| CN201769341U (en) | Sprue bush without plastic residue | |
| CN109158538A (en) | A kind of lower die for contact precoated sand mold | |
| CN109128034A (en) | A kind of contact precoated sand mold | |
| CN207207000U (en) | Plastic mould and its 3D printing mould air-permeable member | |
| CN209094476U (en) | A kind of handwheel precoated sand mold | |
| CN208035207U (en) | The steam generator mold of steam box | |
| CN109158539A (en) | A kind of upper mold for contact precoated sand mold | |
| CN109261898A (en) | A kind of handwheel precoated sand mold | |
| CN209094467U (en) | A kind of keeper precoated sand mold | |
| CN209094474U (en) | A kind of communicating joint platen precoated sand mold | |
| CN209094466U (en) | A kind of rotating seat precoated sand mold | |
| CN208743858U (en) | It is a kind of for manufacturing the electrode of sub-marine gate | |
| CN206983139U (en) | A kind of anti-structure for running burr of injection machine inverted mold | |
| CN209139764U (en) | A kind of lower die of handwheel precoated sand mold | |
| CN209139769U (en) | A kind of bar shaped iron precoated sand mold | |
| CN201566100U (en) | Exhaust push rod for ejection to shape | |
| CN209094468U (en) | A kind of punch-pin of keeper precoated sand mold | |
| CN207105469U (en) | A kind of injection mold | |
| CN209207968U (en) | A kind of mould inscribe breaking mechanism | |
| CN104128590A (en) | Gravity casting method and mold for lead-calcium alloy grids | |
| CN209094475U (en) | A kind of upper mold of handwheel precoated sand mold | |
| CN209257420U (en) | The deep cavity mould of intelligent ammeter shell | |
| CN109226674A (en) | A kind of punch-pin of communicating joint platen precoated sand mold | |
| CN209139767U (en) | A kind of lower die of bar shaped iron precoated sand mold |
Legal Events
| 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: 20190108 |