CN109465400A - A kind of contractile inner core die - Google Patents
A kind of contractile inner core die Download PDFInfo
- Publication number
- CN109465400A CN109465400A CN201811641644.3A CN201811641644A CN109465400A CN 109465400 A CN109465400 A CN 109465400A CN 201811641644 A CN201811641644 A CN 201811641644A CN 109465400 A CN109465400 A CN 109465400A
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- China
- Prior art keywords
- stub
- core
- sliding block
- core model
- guide rail
- 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.)
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- 241000826860 Trapezium Species 0.000 claims description 6
- 238000002955 isolation Methods 0.000 claims 1
- 238000005266 casting Methods 0.000 abstract description 39
- 238000003754 machining Methods 0.000 abstract description 9
- 230000008602 contraction Effects 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 6
- 238000001816 cooling Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008828 contractile function Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
- B22C9/103—Multipart cores
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The present invention relates to a kind of contractile inner core dies, are done reciprocating linear motion by stub along its axis, make the first guide rail and the second guide rail on its side wall that first core model and the second core model be driven to do reciprocating linear motion along the radial direction of the stub respectively.Core model can be to contract when casting demoulds by the present invention, need not setting pattern draft casting can smooth depanning, solve the problems, such as that cooling velocity is excessively slow caused by deep chamber casting causes casting blocked up because of pattern draft technological problems and machining allowance is big, and it can guarantee that first core model obtains faster than second core model toward contract, it will not be locked mutually in contraction process to guarantee the first core model and the second core model, keep contraction process more smooth.
Description
Technical field
The present invention relates to cast casting technical fields, more particularly to a kind of contractile inner core die.
Background technique
In the casting technique of industrial casting, the inner cavity of casting is the mandrel molding by metal mold, its advantage is that molding
Precision is high, cooling velocity is fast, and repeats and reuse.But it is maximum the disadvantage is that casting generally requires 3 ° in depanning
Pattern draft could successfully make casting depanning, this also results in the excessive problem of lumen thickness of casting.When specific calculating,
As the every increase 100mm of the depth of inner cavity of casting, the thickness of inner cavity is also proportionally increased 5.25mm；Therefore, when casting
When lumen thickness is blocked up, the problems such as setting rate that will lead to casting is slow, machining allowance is big and surface layer compacted zone can not remove,
To reduce the castability of casting.
Summary of the invention
Based on this, it is an object of the invention to overcome the deficiencies of the prior art and provide a kind of contractile inner core die,
When casting demoulds core model can to contract, without setting pattern draft casting can smooth depanning, solve deep chamber casting because
Pattern draft technological problems and the excessively slow and big machining allowance problem of cooling velocity caused by causing casting blocked up.
To achieve the goals above, the technical solution adopted by the present invention are as follows:
A kind of contractile inner core die, including removable pin, three the first core models and three the second core models；The removable pin packet
It includes stub and three the first guide rails and three the second guide rails on stub side wall is set along the radially staggered of stub, described three
First core model and three the second core models are respectively equipped with the first sliding groove being slidably matched with the first guide rail and the second guide rail and second and slide
Slot；
The first guide rail and the second guide rail difference and when the stub does reciprocating linear motion along its axis, on side wall
First core model and the second core model is driven to do reciprocating linear motion along the radial direction of the stub；
The stub is cylindrical structure；
First guide rail is made of first connecting portion and the first sliding block, and first sliding block is the rectangular batter post in section
Body structure, first sliding block are connect by the first connecting portion with the stub, and along the vertical section of the stub, described
First sliding block is axial at 5 °~9 ° with the stub；
Second guide rail is made of second connecting portion and the second sliding block, and second sliding block is the rectangular batter post in section
Body structure, second sliding block are connect by the second connecting portion with the stub, and along the vertical section of the stub, described
Second sliding block is axial at 2 °~4 ° with the stub.
Further, on the vertical section of the stub, the section of the first connecting portion is at right-angled trapezium shape；Described first
The inner face of sliding block is arranged on the inclined-plane of the first connecting portion；
On the vertical section of the stub, the section of the second connecting portion is at right-angled trapezium shape；Second sliding block
Inner face is arranged on the inclined-plane of the second connecting portion.
Further, the outside of first sliding block and the first sliding groove CONTACT WITH FRICTION, and its inner face and described first is slided
Slot forms gap；
The outside of second sliding block and the second sliding slot form gap, and its inner face connects with the second sliding slot friction
Touching.
Further, the lateral surface of three first core models and the lateral surface of three the second core models enclose a circle jointly
Column side, and setting is isolated with stub in the inside of the first core model and the second core model.
Further, the side wall outer end CONTACT WITH FRICTION of the side wall outer end of first core model and the second core model, and the first core model
Side wall inner end and the second core model side inner end between form gap.
As a result, compared with conventional core model not can be carried out contraction, contractile inner core die of the invention, in casting pouring and
When solidification, diameter dimension is consistent with the interior chamber size of casting, and in casting demoulding, the first guide rail and the are driven by stub
One guide rail makes the first core model and the second core model to contract, without additional setting pattern draft casting just can smooth depanning,
Therefore, the inner cavity of casting can realize few machining allowance, and the setting time of casting can shorten one third, casting also due to
Reduce machining allowance so surface dense layer can maximize the retention.Furthermore the configuration of the present invention is simple, versatility
By force, it manufactures, and can also be extended to other especially suitable for the casting of new-energy automobile driving motor shell and automotive hub
Deep chamber profiled piece.
In addition, the axial angle of first sliding block and the stub is 5 °~9 °, second sliding block with it is described
The axial angle of stub is 2 °~4 °, it is ensured that first core model obtains faster than second core model toward contract,
It will not be locked mutually in contraction process to guarantee the first core model and the second core model, keep contraction process more smooth.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of contractile inner core die of the invention；
Fig. 2 is the schematic internal view of contractile inner core die of the invention；
Fig. 3 is the top view of contractile inner core die of the invention；
Fig. 4 is the cross-section diagram of the removable pin of contractile inner core die of the invention.
In figure: 11, stub；12, the first guide rail；121, first connecting portion；122, the first sliding block；13, the second guide rail；131,
Second connecting portion；132, the second sliding block；2, the first core model；21, first sliding groove；22, the side wall outer end of the first core model；23, first
The side wall inner end of core model；3, the second core model；31, second sliding slot；32, the side wall outer end of the second core model；33, the side wall of the second core model
Inner end；The angle of α, the second core model side wall outer end face and corresponding second guide rail being formed radially；β, the first sliding block and the stub
Axial angle；The axial angle of γ, the second sliding block and the stub.
Specific embodiment
To further illustrate that each embodiment, the present invention are provided with attached drawing.These attached drawings are that the invention discloses one of content
Point, mainly to illustrate embodiment, and the associated description of specification can be cooperated to explain the operation principles of embodiment.Cooperation ginseng
These contents are examined, those skilled in the art will be understood that other may obtain embodiment and advantages of the present invention.
Please refer to Fig. 1 to Fig. 4；Fig. 1 is the structural schematic diagram of contractile inner core die of the invention, and Fig. 2 is can to receive
The schematic internal view of the inner core die of contracting, Fig. 3 are the top views of contractile inner core die；Fig. 4 is contractile inner core of the invention
The cross-section diagram of the removable pin of mould.
A kind of contractile inner core die, including removable pin, three the first core models 2 and three the second core models 3；The removable pin
Including stub 11 and along the radially staggered of stub, three the first guide rails 12 and three the second guide rails 13 on stub side wall are set,
Three first core models 2 and three the second core models 3 are respectively equipped with to be slidably matched with the first guide rail 12 and the second guide rail 13
One sliding slot 21 and second sliding slot 31；
The first guide rail 12 and the second guide rail and when the stub 11 does reciprocating linear motion along its axis, on side wall
13 drive first core model 2 and the second core model 3 to do reciprocating linear motion along the radial direction of the stub 11 respectively；
The stub 11 is cylindrical structure；
First guide rail 12 is made of first connecting portion 121 and the first sliding block 122, and first sliding block 122 is section
Rectangular scalene cylinder structure, first sliding block 122 is connect by the first connecting portion 121 with the stub 11, and edge
The vertical section of the stub 11, first sliding block 122 is axial at 5 °~9 ° with the stub 11, and the present embodiment is preferably taken as
6°；
Second guide rail 13 is made of second connecting portion 131 and the second sliding block 132, and second sliding block 132 is section
Rectangular scalene cylinder structure, second sliding block 132 is connect by the second connecting portion 131 with the stub 11, and edge
The vertical section of the stub 11, second sliding block 132 is axial at 2 °~4 ° with the stub 11, and the present embodiment is preferably taken as
2°。
Specifically, on the vertical section of the stub 11, the section of the first connecting portion 121 is at right-angled trapezium shape；Institute
The inner face for stating the first sliding block is arranged on the inclined-plane of the first connecting portion；
On the vertical section of the stub, the section of the second connecting portion 131 is at right-angled trapezium shape；Second sliding block
Inner face be arranged on the inclined-plane of the second connecting portion.
Specifically, the outside of first sliding block and 21 CONTACT WITH FRICTION of first sliding groove, and its inner face and described first
Sliding slot 21 forms gap；
The outside of second sliding block and the second sliding slot 31 form gap, and its inner face rubs with the second sliding slot 31
Wipe contact.
Specifically, the lateral surface of three first core models 2 and the lateral surface of three the second core models 3 enclose one jointly
Cylindrical side, and setting is isolated in the inside of the first core model 2 and the second core model 3 with stub.
Specifically, 32 CONTACT WITH FRICTION of side wall outer end of the side wall outer end 22 of first core model and the second core model, and first
Gap is formed between the side wall inner end 23 of core model and the side inner end 33 of the second core model.
Specifically, the second core model side wall outer end 32 and the angle α of corresponding second guide rail 13 being formed radially be 85 °~
105 °, the present embodiment is preferably taken as 96 °.
Illustrate the working principle of contractile inner core die of the invention below:
In casting and casting solidification, the diameter for the periphery that the first core model 2 of the invention and the second core model 3 surround jointly
Size is consistent with the interior chamber size of casting, the mutually locking between any two of the removable pin, the first core model 2 and the second core model 3, described
The side wall outer end 22 of first core model and 32 CONTACT WITH FRICTION of side wall outer end of the second core model, the outside of first sliding block and described the
One sliding slot, 21 CONTACT WITH FRICTION, the inner face of second sliding block and 31 CONTACT WITH FRICTION of second sliding slot；And in demoulding, pass through master
Pin 11 drives the first guide rail 12 and the second guide rail 13 axially movable, so that first sliding block 122 and the second sliding block 132 difference
The opposite sliding in the first sliding groove 21 and second sliding slot 31, and then receive first core model 2 and the second core model 3 inwardly
Contracting, just being capable of smooth depanning without additional setting pattern draft casting.
Compared with conventional core model not can be carried out contraction, contractile inner core die of the invention, in casting pouring and solidification
When, diameter dimension is consistent with the interior chamber size of casting, and in casting demoulding, drive the first guide rail and second to lead by stub
Rail makes the first core model and the second core model to contract, without additional setting pattern draft casting just can smooth depanning, therefore,
The inner cavity of casting can realize few machining allowance, and specific data are changed to the machining allowance of 3mm from the machining allowance of original 15mm, and
The setting time of casting can shorten one third, and casting is also due to reduce machining allowance so surface dense layer can obtain
Retain to greatest extent.Furthermore the configuration of the present invention is simple, it is versatile, especially suitable for new-energy automobile driving motor shell
And the casting manufacture of automotive hub, and other deep chamber profiled pieces can also be extended to.
In addition, contractile inner core die of the invention, the diameter of the second core model side wall outer end face and corresponding second guide rail
It is 96 ° to the angle α of formation, it is ensured that first core model and the second core model do not generate interference when shrinking, and are better achieved
Contractile function；The axial angle β of first sliding block and the stub is 6 °, the axis of second sliding block and the stub
It is 2 ° to angle γ, it is ensured that first core model obtains faster than second core model toward contract, to guarantee the
It will not be locked mutually in the contraction process of one core model and the second core model, keep contraction process more smooth.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
The limitation to contractile inner core die range is invented therefore cannot be interpreted as.It should be pointed out that for the common of this field
For technical staff, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to this
The protection scope of invention.
Claims (5)
1. a kind of contractile inner core die, it is characterised in that: including removable pin, three the first core models and three the second core models；Institute
Removable pin is stated to include stub and three the first guide rails are arranged on stub side wall and three second are led along the radially staggered of stub
Rail, three first core models and three the second core models are respectively equipped with first to be slidably matched with the first guide rail and the second guide rail and slide
Slot and second sliding slot；
And when the stub does reciprocating linear motion along its axis, the first guide rail and the second guide rail on side wall drive respectively
First core model and the second core model do reciprocating linear motion along the radial direction of the stub；
The stub is cylindrical structure；
First guide rail is made of first connecting portion and the first sliding block, and first sliding block is the rectangular scalene cylinder knot in section
Structure, first sliding block are connect by the first connecting portion with the stub, and along the vertical section of the stub, and described first
Sliding block is axial at 5 °~9 ° with the stub；
Second guide rail is made of second connecting portion and the second sliding block, and second sliding block is the rectangular scalene cylinder knot in section
Structure, second sliding block are connect by the second connecting portion with the stub, and along the vertical section of the stub, and described second
Sliding block is axial at 2 °~4 ° with the stub.
2. contractile inner core die according to claim 1, it is characterised in that:
On the vertical section of the stub, the section of the first connecting portion is at right-angled trapezium shape；The inner face of first sliding block
It is arranged on the inclined-plane of the first connecting portion；
On the vertical section of the stub, the section of the second connecting portion is at right-angled trapezium shape；The inner face of second sliding block
It is arranged on the inclined-plane of the second connecting portion.
3. contractile inner core die according to claim 2, it is characterised in that:
The outside of first sliding block and the first sliding groove CONTACT WITH FRICTION, and its inner face and the first sliding groove form gap；
The outside of second sliding block and the second sliding slot form gap, and its inner face and the second sliding slot CONTACT WITH FRICTION.
4. contractile inner core die according to claim 3, it is characterised in that: the lateral surface of three first core models and
The lateral surface of three the second core models encloses a cylindrical side jointly, and the inside of the first core model and the second core model is and stub
Isolation setting.
5. contractile inner core die according to claim 4, it is characterised in that: the side wall outer end of first core model and the
The side wall outer end CONTACT WITH FRICTION of two core models, and formed between the side wall inner end of the first core model and the side inner end of the second core model empty
Gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811641644.3A CN109465400A (en) | 2018-12-29 | 2018-12-29 | A kind of contractile inner core die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811641644.3A CN109465400A (en) | 2018-12-29 | 2018-12-29 | A kind of contractile inner core die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109465400A true CN109465400A (en) | 2019-03-15 |
Family
ID=65677949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811641644.3A Withdrawn CN109465400A (en) | 2018-12-29 | 2018-12-29 | A kind of contractile inner core die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109465400A (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2619064A1 (en) * | 1976-05-03 | 1977-11-17 | Geyer & Co | Expanding mould core for mfr. of injection-mouldings - with complicated exterior and/or interior configurations has movable, segmented sleeve to facilitate removal of mouldings |
| US4130264A (en) * | 1977-10-26 | 1978-12-19 | Geyer & Co. | Expandable core for injection molding |
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| US4771981A (en) * | 1985-08-30 | 1988-09-20 | R. Clarke & Co. (Moulds) Limited | Collapsible mould core |
| JP2001205672A (en) * | 2000-01-24 | 2001-07-31 | Sekisui Chem Co Ltd | Mold for injection molding cylindrical object |
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| US20090152770A1 (en) * | 2007-08-07 | 2009-06-18 | Canon Virginia Inc. | Mechanically collapsible core for injection molding |
| CN102985242A (en) * | 2009-06-17 | 2013-03-20 | 博革新元件国际公司 | Lock for core assembly for injection molding tool |
| DE202015006806U1 (en) * | 2015-09-29 | 2016-02-08 | Ntec Normalien Gmbh | Entformungswerkzeug |
| CN209647533U (en) * | 2018-12-29 | 2019-11-19 | 广东肇庆动力金属股份有限公司 | A kind of contractile inner core die |
-
2018
- 2018-12-29 CN CN201811641644.3A patent/CN109465400A/en not_active Withdrawn
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2619064A1 (en) * | 1976-05-03 | 1977-11-17 | Geyer & Co | Expanding mould core for mfr. of injection-mouldings - with complicated exterior and/or interior configurations has movable, segmented sleeve to facilitate removal of mouldings |
| GB1592208A (en) * | 1977-10-24 | 1981-07-01 | Geyer Werkzeugbau Gmbh & Co Lt | Collapsible cores for the manufacture of moulded components |
| US4130264A (en) * | 1977-10-26 | 1978-12-19 | Geyer & Co. | Expandable core for injection molding |
| CH623776A5 (en) * | 1977-10-26 | 1981-06-30 | Geyer & Co | Expanding core for the production of injection mouldings |
| US4286766A (en) * | 1980-04-18 | 1981-09-01 | Holdt J W Von | Collapsible mold core |
| GB2100172A (en) * | 1981-06-12 | 1982-12-22 | Holdt J W Von | Collapsible mould cores |
| FR2509220A1 (en) * | 1981-07-07 | 1983-01-14 | Holdt John Von | Collapsible mould mandrel - has tapered core carrying sliding outer segments |
| US4771981A (en) * | 1985-08-30 | 1988-09-20 | R. Clarke & Co. (Moulds) Limited | Collapsible mould core |
| JPS62279914A (en) * | 1986-05-28 | 1987-12-04 | Cosmo Seimitsu:Kk | Manufacturing equipment for article having undercut on inside |
| JP2001205672A (en) * | 2000-01-24 | 2001-07-31 | Sekisui Chem Co Ltd | Mold for injection molding cylindrical object |
| US20090152770A1 (en) * | 2007-08-07 | 2009-06-18 | Canon Virginia Inc. | Mechanically collapsible core for injection molding |
| DE102007039368A1 (en) * | 2007-08-15 | 2009-02-19 | Wiedemann Gmbh | Collapsible core as part of mold for plastic injection has at least four radially displaceable main segments arranged around center core and equal number of radially displaceable intermediate segments arranged between main segments |
| CN102985242A (en) * | 2009-06-17 | 2013-03-20 | 博革新元件国际公司 | Lock for core assembly for injection molding tool |
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| CN209647533U (en) * | 2018-12-29 | 2019-11-19 | 广东肇庆动力金属股份有限公司 | A kind of contractile inner core die |
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Application publication date: 20190315 |