CN109202025A - Arenaceous shell core pattern casting method - Google Patents
Arenaceous shell core pattern casting method Download PDFInfo
- Publication number
- CN109202025A CN109202025A CN201811346850.1A CN201811346850A CN109202025A CN 109202025 A CN109202025 A CN 109202025A CN 201811346850 A CN201811346850 A CN 201811346850A CN 109202025 A CN109202025 A CN 109202025A
- Authority
- CN
- China
- Prior art keywords
- shell core
- core pattern
- arenaceous shell
- casting
- pressing board
- 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.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C21/00—Flasks; Accessories therefor
- B22C21/12—Accessories
- B22C21/14—Accessories for reinforcing or securing moulding materials or cores, e.g. gaggers, chaplets, pins, bars
-
- 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
- B22C9/20—Stack moulds, i.e. arrangement of multiple moulds or flasks
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Devices For Molds (AREA)
- Building Environments (AREA)
Abstract
The present invention provides the arenaceous shell core pattern casting methods that a kind of precoated sand, cold core resin sand, hot core resin sand and other any methods are formed, the unit mould of vacuum-assist pouring case and arenaceous shell core pattern A is provided, the unit mould of arenaceous shell core pattern A is made of two core mold plates of fitting arrangement；The outer plate surface of the unit mould of the vertical and adjacent arenaceous shell core pattern A of the plate face of the unit mould of arenaceous shell core pattern A is arranged against each other and is constrained by the portion of gripping and fixed, and the bottom of arenaceous shell core pattern A and pouring box bottom spacing is kept to arrange；It is husky until being coated on around precoated sand sand mold by the interval injection filling between arenaceous shell core pattern A and pouring box；Plastic film is covered to the case mouth of pouring box, casting gate passes through film and manifests dewiness, and a small amount of sand of spreading pushes down plastic film；Then casting casting liquid, the present invention both can be adapted for the cast molding operation of common sandbox, be readily applicable in the forming operation of negative pressure casting.
Description
Technical field
The invention belongs to sand shell core mold casting fields, and in particular to a kind of pouring for middle-size and small-size metal casting arenaceous shell core pattern
Casting method.
Background technique
Currently, being traditionally used for the sand shell core mold casting of middle-size and small-size metal casting production, main use buries husky pouring type；
Which need to make two cores arranged for the arenaceous shell core pattern (namely core model) as product type chamber, unit mould by fitting first
Template is constituted, and gather semicircular cavities a on the cavity plate face in each core mold plate, the semicircle after two core mold plate fittings therebetween
Cavity corresponds to each other and encloses the circular chamber of steel ball to be formed, and setting connection is mutual for connecting master between circular cavity a
The molten steel runner c of running channel b, as shown in Figure 1-3, an appropriate number of unit mould is sticked together to the drawing by end plate and connection board
Bar is fixed as one group of casting moulds, which is placed in cabinet, is burying upper filling sand, and filling sand is with common outer molding sand
Can, at cabinet case open height position, casting moulds are completely disposed in filling sand filling sand landfill, then lay one layer on filling sand
Plastic film, the case mouth outside that plastic film extends to cabinet is a little, then spreading fills sand for plastics on a small quantity on a plastic film
Film is pushed down, and pays attention to covering layer of sand on the plastic film at cast gate in order to avoid potting syrup soup ruins plastic film；Pass through steel when casting
Water enters main running channel b, then successively via molten steel runner c to flow into each spherical type intracavitary, common outer molding sand then mutually should ensure that for
The auxiliary sizing casting and heat preservation operation of its core model finally utilize the high-precision of core model type chamber itself and the guarantor of common outer molding sand
Warm styling, to reach its high quality of finished demand.
In order to improve casting quality and meet environmental requirements, the present inventor implements to improve in front of to above-mentioned running gate system,
Negative pressure connection is implemented to cabinet, the casting process of precoated sand is realized under subnormal ambient, and the casting flue gas of extraction is implemented
Environmental protection treatment.
Regardless of whether casting using subnormal ambient, require to stick together an appropriate number of unit mould by end plate
It is fixed as one group of casting moulds with the pull rod of connection board, and first the certain thickness filling of spreading is husky as bottom pad in cabinet
Sand, then casting moulds group is placed into a group by a group on the pad sand of bottom place mat, it is then further continued for injection filling sand, fills sand
Injection process, which makes two bites at a cherry to need to interrupt among i.e., fills out husky operation；The operation that casting is collected after casting is equally more tired
Difficulty is lifted by crane because by the baking of high temperature fluid injection, the overlay film agent material carbonization in arenaceous shell core pattern can be sayed without integrality and intensity
When end plate and the pull rod of connection, the obstruction by filling sand, arenaceous shell core pattern are scattered while fragmentation in addition, make casting can not
It collects, topples over if cabinet is directly overturn, the pull rod and sand mold waste material and filling of end plate and connection are husky mixed in together, casting
Part is equally difficult to sorting, collects casting.
Summary of the invention
The object of the present invention is to provide a kind of arenaceous shell core pattern casting methods, it is intended to improve boxing efficiency while improve casting
Sort collection efficiency.
To achieve the above object, the invention adopts the following technical scheme:
A kind of arenaceous shell core pattern casting method, it is characterised in that:
The unit mould of vacuum-assist pouring case and arenaceous shell core pattern A, two cores that the unit mould of arenaceous shell core pattern A is arranged by fitting are provided
Template is constituted；
The outer plate surface of the unit mould of the vertical and adjacent arenaceous shell core pattern A of the plate face of the unit mould of arenaceous shell core pattern A is against each other
It arranges and is constrained by the portion of gripping and fixed, the bottom of arenaceous shell core pattern A and pouring box bottom spacing is kept to arrange；
It is husky until being coated on around precoated sand sand mold by the interval injection filling between arenaceous shell core pattern A and pouring box；
Plastic film is covered to the case mouth of pouring box, casting gate passes through film and manifests dewiness, and a small amount of sand of spreading is pushed down
Plastic film；
Casting casting liquid.
Above scheme is exactly to be provided with to grip portion in sandbox cabinet, which is able to maintain arenaceous shell core pattern
It is arranged between bottom for spacing, pad sand bed thus need not be first laid in bottom, as long as that is, by arenaceous shell core pattern by clamping
Fixed part constrains in cabinet, and filling husky operation can complete to save to fill out husky efficiency with one-time continuous, and after casting
Directly cabinet overturning can be toppled over, the portion of gripping still remains attached on cabinet without being mingled in casting and useless type at this time
In sand, filling sand, difficult and danger is brought without picking up clamping plate and connecting rod from high temperature sand drift, while the present invention also eliminates
Implement the packaging operation of fixed casting moulds group to arenaceous shell core pattern using clamping plate and pull rod, the present invention both can be adapted for common sandbox
Cast molding operation, be readily applicable in the forming operation of negative pressure casting.
Detailed description of the invention
Fig. 1 is the front cavity structure schematic diagram of arenaceous shell core pattern upper plate of the invention；
Fig. 2 is the part the I partial enlarged view of Fig. 1；
Fig. 3 is the upper and lower plates cooperation schematic diagram of arenaceous shell core pattern of the invention；
Fig. 4 is the structural schematic diagram of sandbox of the present invention；Fig. 5 is the A-A cross-sectional view in Fig. 4；
Fig. 6 is movable pressing board and sandbox cabinet matching relationship partial sectional view；
Fig. 7,8 be sandbox of the present invention schematic perspective view.
Specific embodiment
A kind of arenaceous shell core pattern casting method, it is characterised in that:
The unit mould of vacuum-assist pouring case and arenaceous shell core pattern A, two cores that the unit mould of arenaceous shell core pattern A is arranged by fitting are provided
Template is constituted；
The outer plate surface of the unit mould of the vertical and adjacent arenaceous shell core pattern A of the plate face of the unit mould of arenaceous shell core pattern A is against each other
It arranges and is constrained by the portion of gripping and fixed, the bottom of arenaceous shell core pattern A and pouring box bottom spacing is kept to arrange；
It is husky until being coated on around precoated sand sand mold by the interval injection filling between arenaceous shell core pattern A and pouring box；
Plastic film is covered to the case mouth of pouring box, casting gate passes through film and manifests dewiness, and a small amount of sand of spreading is pushed down
Plastic film；
Casting casting liquid.
It, directly will be by forming by above scheme it is found that the present invention, which has exactly added original sandbox, grips component
The arenaceous shell core pattern A of process preparation is placed in sandbox, and is fixed arenaceous shell core pattern A with the portion of gripping, and eliminates sand shell core
The independent constraint of type is fixed and lifting vanning process, due to reserved when fixed arenaceous shell core pattern A arenaceous shell core pattern A and bottom it
Between appropriate space, so for fill out husky process it is disposable continuous operation provide structure guarantee, that is, simplify and fill out husky process, have
Say to body to be exactly that the present invention can disposably complete to fill out husky operation rather than the husky operation of the intermittent discontinuous filling in midway, clamps simultaneously
Fixed part is arranged on sandbox, when using the mode sorting of falling sand of tumbling, the portion of gripping will not be mingled in sand drift, therefore
Product for subsequent sorting casting and forming provides great convenience.
For the fixation to arenaceous shell core pattern A, need to consider the self structure characteristic of arenaceous shell core pattern A and clamp to require, this hair
Bright to use preferred embodiment below, that is, the portion of gripping includes that movable pressing board 20 is provided in sandbox cabinet 10, the sand
Setting substrate 11 and region constitutes the clamping of arenaceous shell core pattern A about between 20 spacing between plates of movable pressing board is adjustable and the plate in box body 10
Beam area.
Since unit mould is made of two core mold plates of fitting arrangement, specific structure is referring to the record in background technique.It will
It is that one kind can simplify that the outer plate surface of two adjacent unit moulds, which constrains in a manner of against each other and carries out concentrating fixation together,
The reasonable plan of casting process, so present invention employs the opposite schemes parallel with the plate face of substrate 11 of movable pressing board 20
It solves the problems, such as to be fixedly clamped.Specifically Preferable scheme is that the substrate 11 is made of the tank wall inner plate surface in sandbox cabinet 10,
The plate face of movable pressing board 20 is parallel with the tank wall plate face relative to each other on cabinet, in the outside plate face of movable pressing board 20 perpendicular to
The through-hole that the mandril 21 of plate face arrangement is opened up from the tank wall for closing on side is placed and is extended to outside cabinet, mandril 21 and sandbox cabinet
Setting displacement adjusting and locking unit between 10.
In above scheme, substrate 11 is selected as fixed mode and arranges, movable pressing board 20 then selects movable setting side
Case, naturally it is also possible to select scheme of the substrate 11 also for movable formula, when substrate need to be with above-mentioned fixed scheme both can be with
Select the inner wall of sandbox as substrate, this is more applicable in the sandbox newly processed, also can choose and add one on tank wall
A plate body is constituted, and the program uses when can be transformed to existing sandbox, can also be pre- between the plate body and tank wall of certain substrate
Spacing appropriate is stayed, is conducive to heat preservation and cooling uniformity, stability once accommodating a part filling sand.
In order to realize that the position of movable pressing board 20 is adjusted and position is fixed, for use scheme there are many, preferred side
It is leading screw and nut mechanism that case, which is that displacement adjusts with locking unit, convenient using leading screw and nut mechanism component processing, at low cost and just
In operation.
Two schemes are disclosed in detail below:
Scheme first is that displacement adjust with locking unit include the nut 30 being screwed on 21 outer segment shaft of mandril, nut 30
End face outside and blocking part 40, which are constituted, keeps out cooperation.
Scheme is second is that it includes the nut 30 being screwed on 21 outer segment shaft of mandril, 30 cloth of nut that displacement, which is adjusted with locking unit,
It sets on the outer side box wall of sandbox cabinet 10, circumferential turn is constituted between the inner end of mandril 21 and the outside plate face of movable pressing board 20
Dynamic, axial limiting cooperation.
In scheme one, mandril 21 only makees axial displacement and then drives movable pressing board displacement, and nut 30 only rotates and axial direction
Position is fixed；In scheme two, 30 position of nut is fixed be it is axial, circumferential fixed, the inner end of mandril 21 and movable pressing board 20 it
Between for axial limiting, the coordinated scheme that circumferentially rotates, it is ensured that the realization that movable pressing board 20 is displaced guarantees the shifting of movable pressing board 20
Direction is moved perpendicular to its board direction.The leading screw and nut mechanism provided in attached drawing is a kind of very convenient easy structure, i.e. spiral shell
The outer periphery protruding-type extension stem wing 31 of mother 30 is applicable in so that it is convenient to cooperate with tools such as sleeve or extension bars, and nut
Repellent parts are arranged to realize the limit of nut 30 moved axially outward in 30 outer end, it is ensured that the realization of clamping.
Rod piece 60 is disposed in sandbox cabinet 10, rod piece 60 and 10 bottom space type of sandbox cabinet are arranged and be located at activity pressure
The lower section of plate 20, arenaceous shell core pattern A are placed on the rod piece 60 of horizontal, adjust 20 horizontal direction of movable pressing board for constituting the portion that grips
Clamp arenaceous shell core pattern A.
In order to realize that the spacing between arenaceous shell core pattern A and bottom is arranged, above-mentioned 60 plan of establishment of rod piece is used, i.e., in case
Setting is spaced a distance above bottom to place arenaceous shell core pattern A, 60 one side of rod piece be used to place arenaceous shell core pattern A make its bottom surface with
Bottom keeps appropriate spacing to allow filling is husky to arrive on one side, at the same ensure that arenaceous shell core pattern A itself stability and various chamber it is complete
It is good, in addition also add the issuable metaboly in negative pressure casting of sandbox cabinet 10.
Movable pressing board 20 closes on for the following and rod piece 60 of square plate and movable pressing board 20 or contact arrangement.Movable pressing board
20 edge contour selects rectangular to be the following and bar of selection movable pressing board 20 in order to consistent with the plate face shape of arenaceous shell core pattern A
Part 60 closes on or contact arrangement, can guarantee that movable pressing board 20 can be fallen in this way and set on rod piece 60, therefore, movable pressing board 20
Posture available guarantee that being not necessarily to the external force that undertakes outside the tank wall dative case of moment of flexure and sandbox cabinet 10 of mandril 21 simultaneously leads
The deformation of cause.
Preferably, the horizontally disposed rod piece 60 of two parallel intervals corresponds to a movable pressing board 20 and arranges.This
Sample not only can guarantee that the support of sand shell core type A and the posture of special operations pressing plate 20 were kept, but also can allow filling is husky to arrive at arenaceous shell core pattern A
Bottom.
In order to realize negative pressure casting, the pump-line of setting connection inner cavity and vacuum unit on sandbox cabinet 10, with work
Placing on dynamic pressure plate 20 connected mandril 21 and sandbox cabinet 10 constitutes sealing cooperation at via hole, the bottom of sandbox cabinet 10 is
The sandwich that inside and outside bottom 12,13 is constituted offers on interior bottom 12 and lays foraminate strainer 121 and be connected to interlayer chamber and appearance
Receive the chamber of arenaceous shell core pattern, one end of pump-line 50 and interlayer chamber, the other end are arranged in the side wall of sandbox cabinet 10
Outer wall on and protrude out convenient for connecting pipe head.It should be noted that displacement adjust with the arrangement of locking unit should with vacuumize
Unit pump-line 50 mutual cooperation avoid interfering, on mandril 21 and sandbox cabinet 10 between via hole setting sealing in order to avoid
Destroy negative pressure casting environment.
Claims (8)
1. a kind of arenaceous shell core pattern casting method, it is characterised in that:
The unit mould of vacuum-assist pouring case and arenaceous shell core pattern A, two core mold plates that the unit mould of arenaceous shell core pattern A is arranged by fitting are provided
It constitutes；
The outer plate surface of the unit mould of the vertical and adjacent arenaceous shell core pattern A of the plate face of the unit mould of arenaceous shell core pattern A is arranged against each other
And constrained and fixed by the portion of gripping, keep the bottom of arenaceous shell core pattern A and pouring box bottom spacing to arrange；
It is husky until being coated on around arenaceous shell core pattern A by the interval injection filling between arenaceous shell core pattern A and pouring box；
Plastic film is covered to the case mouth of pouring box, casting gate passes through film and manifests dewiness, and a small amount of sand of spreading pushes down plastics
Film；
Casting casting liquid.
2. casting method according to claim 2, it is characterised in that: the portion of gripping includes setting in sandbox cabinet (10)
Have movable pressing board (20), setting substrate (11) is adjustable with movable pressing board (20) spacing between plates in the sandbox cabinet (10) and should
Region constitutes the clamping confining region of arenaceous shell core pattern A between plate.
3. casting method according to claim 2, it is characterised in that: the substrate (11) is by sandbox cabinet (10)
Tank wall inner plate surface is constituted, and the plate face of movable pressing board (20) is parallel with the tank wall plate face relative to each other on cabinet, movable pressing board
(20) through-hole opened up perpendicular to the mandril (21) of plate face arrangement from the tank wall for closing on side in outside plate face is placed and is extended to
Outside cabinet, setting displacement adjusting and locking unit between mandril (21) and sandbox cabinet (10).
4. casting method according to claim 2, it is characterised in that: it is feed screw nut's machine that displacement, which is adjusted with locking unit,
Structure, it includes the nut (30) being screwed on mandril (21) outer segment shaft, the outboard end of nut (30) that displacement, which is adjusted with locking unit,
Face and blocking part (40), which are constituted, keeps out cooperation, the outer periphery protruding-type extension stem wing (31) of nut (30).
5. casting method according to claim 1 or 2 or 3 or 4, it is characterised in that: be disposed with bar in sandbox cabinet (10)
Part (60), rod piece (60) and sandbox cabinet (10) bottom space type are arranged and are located at the lower section of movable pressing board (20), arenaceous shell core pattern A
It is placed on the rod piece (60) of horizontal, adjusts movable pressing board (20) the horizontal direction clamping arenaceous shell core pattern A for constituting the portion that grips.
6. casting method according to claim 5, it is characterised in that: movable pressing board (20) is square plate and movable pressing board
(20) following and rod piece (60) closes on or contact arrangement, and two horizontally disposed rod pieces of parallel interval (60) correspond to one
Movable pressing board (20) arrangement.
7. casting method according to claim 1 or 2 or 3 or 4, it is characterised in that: connection is arranged on sandbox cabinet (10)
The pump-line of inner cavity and vacuum unit, the mandril (21) being connected with movable pressing board (20) and placing on sandbox cabinet (10)
Sealing cooperation is constituted at via hole.
8. casting method according to claim 7, it is characterised in that: the bottom of sandbox cabinet (10) is inside and outside bottom (12)
(13) sandwich constituted offers on interior bottom (12) and lays foraminate strainer (121) connection interlayer chamber and accommodate sand
The chamber of shell core type, one end of pump-line (50) and interlayer chamber, the other end are arranged in the side wall of sandbox cabinet (10)
Outer wall on and protrude out convenient for connecting pipe head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811346850.1A CN109202025B (en) | 2018-11-13 | 2018-11-13 | Sand shell core type pouring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811346850.1A CN109202025B (en) | 2018-11-13 | 2018-11-13 | Sand shell core type pouring method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109202025A true CN109202025A (en) | 2019-01-15 |
| CN109202025B CN109202025B (en) | 2021-08-06 |
Family
ID=64995994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811346850.1A Active CN109202025B (en) | 2018-11-13 | 2018-11-13 | Sand shell core type pouring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109202025B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112170783A (en) * | 2020-09-23 | 2021-01-05 | 共享装备股份有限公司 | Core clamping and pressing method and clamping and pressing device thereof |
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| JPH05123827A (en) * | 1990-10-25 | 1993-05-21 | Adolf Hottinger Mas Bau Gmbh | Device and method for manufacture of mold part for casting |
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| Publication number | Publication date |
|---|---|
| CN109202025B (en) | 2021-08-06 |
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Address after: 245700 Mount Huangshan Industrial Park in Huangshan City, Anhui Patentee after: Huangshan Zhongfa wear resistant material technology Co.,Ltd. Address before: 245700 Huangshan Industrial Park, Huangshan City, Anhui Province Patentee before: HUANGSHAN ZHONGFA WEAR RESISTANT MATERIAL CO.,LTD. |
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Denomination of invention: Sand shell core casting method Effective date of registration: 20220830 Granted publication date: 20210806 Pledgee: Huangshan Taiping Rural Commercial Bank Co.,Ltd. Pledgor: Huangshan Zhongfa wear resistant material technology Co.,Ltd. Registration number: Y2022980014036 |
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