CN209647533U - A kind of contractile inner core die - Google Patents
A kind of contractile inner core die Download PDFInfo
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- CN209647533U CN209647533U CN201822276584.1U CN201822276584U CN209647533U CN 209647533 U CN209647533 U CN 209647533U CN 201822276584 U CN201822276584 U CN 201822276584U CN 209647533 U CN209647533 U CN 209647533U
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Abstract
The utility model 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 for the utility model, 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 utility model 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.
Utility model content
Based on this, the purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of contractile inner core die,
Its when casting demoulds core model can to contract, without setting pattern draft casting can smooth depanning, solve deep chamber casting
The excessively slow and big machining allowance problem of cooling velocity caused by part causes casting blocked up because of pattern draft technological problems.
To achieve the goals above, the technical solution adopted in the utility model 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, the contractile inner core die of the utility model is poured in casting
When note and solidification, diameter dimension is consistent with the interior chamber size of casting, and in casting demoulding, the first guide rail is driven by stub
Make the first core model and the second core model to contract with the first guide rail, can smoothly go out it is not necessary that pattern draft casting is additionally arranged just
Mould, therefore, the inner cavity of casting can realize few machining allowance, and the setting time of casting can shorten one third, casting
Due to reducing machining allowance so surface dense layer can maximize the retention.Furthermore the utility model structure letter
It is single, it is versatile, it is manufactured especially suitable for the casting of new-energy automobile driving motor shell and automotive hub, and can also open up
Open up other deep chamber profiled pieces.
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 the contractile inner core die of the utility model；
Fig. 2 is the schematic internal view of the contractile inner core die of the utility model；
Fig. 3 is the top view of the contractile inner core die of the utility model；
Fig. 4 is the cross-section diagram of the removable pin of the contractile inner core die of the utility model.
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 each embodiment, the utility model is provided with attached drawing.These attached drawings are in the utility model discloses
A part of appearance mainly to illustrate embodiment, and can cooperate the associated description of specification former come the running for explaining embodiment
Reason.Cooperation refers to these contents, and those skilled in the art will be understood that other may obtain embodiment and this is practical
Novel advantage.
Please refer to Fig. 1 to Fig. 4；Fig. 1 is the structural schematic diagram of the contractile inner core die of the utility model, and Fig. 2 is
The schematic internal view of contractile inner core die, Fig. 3 are the top views of contractile inner core die；Fig. 4 is receiving for the utility model
The cross-section diagram of the removable pin of the inner core die of contracting.
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 the contractile inner core die of the utility model below:
In casting and casting solidification, periphery that first core model 2 and the second core model 3 of the utility model surround jointly
Diameter dimension 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,
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 institute
State 21 CONTACT WITH FRICTION of first sliding groove, the inner face of second sliding block and 31 CONTACT WITH FRICTION of second sliding slot；And in demoulding, lead to
It crosses stub 11 and 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
The opposite sliding in the first sliding groove 21 and second sliding slot 31 respectively, and then make first core model 2 and the second core model 3 inwardly
It shrinks, it just being capable of smooth depanning without additional setting pattern draft casting.
Compared with conventional core model not can be carried out contraction, the contractile inner core die of the utility model, 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
Two guide rails make 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 more than the processing of 3mm from the machining allowance of original 15mm
Amount, and the setting time of casting can shorten one third, and casting is also due to reduce machining allowance so surface dense layer
It can maximize the retention.Furthermore the utility model structure is simple, versatile, especially suitable for new-energy automobile
The manufacture of the casting of driving motor shell and automotive hub, and other deep chamber profiled pieces can also be extended to.
In addition, the contractile inner core die of the utility model, the second core model side wall outer end face and corresponding second guide rail
The angle α being formed radially be 96 °, it is ensured that first core model and the second core model do not generate interference when shrinking, preferably
Realize contractile function；The axial angle β of first sliding block and the stub is 6 °, second sliding block and the stub
Axial angle γ be 2 °, it is ensured that first core model obtains faster than second core model toward contract, to protect
Demonstrate,proving in the contraction process of the first core model and the second core model to lock mutually, keep contraction process more smooth.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to the contractile inner core die range of utility model.It should be pointed out that for ability
For the those of ordinary skill in domain, without departing from the concept of the premise utility, various modifications and improvements can be made,
These are all within the protection scope of the present invention.
Claims (4)
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822276584.1U CN209647533U (en) | 2018-12-29 | 2018-12-29 | A kind of contractile inner core die |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822276584.1U CN209647533U (en) | 2018-12-29 | 2018-12-29 | A kind of contractile inner core die |
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| CN209647533U true CN209647533U (en) | 2019-11-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109465400A (en) * | 2018-12-29 | 2019-03-15 | 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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2018
- 2018-12-29 CN CN201822276584.1U patent/CN209647533U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109465400A (en) * | 2018-12-29 | 2019-03-15 | 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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