CN208321652U - A kind of adjustable round tube class squeezes the mold of hole size - Google Patents
A kind of adjustable round tube class squeezes the mold of hole size Download PDFInfo
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- CN208321652U CN208321652U CN201820719987.6U CN201820719987U CN208321652U CN 208321652 U CN208321652 U CN 208321652U CN 201820719987 U CN201820719987 U CN 201820719987U CN 208321652 U CN208321652 U CN 208321652U
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Abstract
It includes upper die and lower die that a kind of adjustable round tube class, which squeezes the mold of hole size, and the upper mold lower end is snapped together with the lower die upper end；The upper mold upper end is equipped with multiple tap holes around central point distribution, and multiple tap holes are received in the upper mold lower end to be converged through receiving room, and mold core is arranged with central point corresponding position in the receiving room；The lower die upper end is equipped with bonding container, is equipped with circular hole cavity at the bonding container center, the circular hole cavity exit passes through lower die wall to lower die lower end, is equipped with annulus in the bonding container circular hole cavity edge.Adjusting method includes true defining K value, and K is adjustment factor, 0.97≤K≤1.3；Δ d is the changing value of round tube diameter of bore size after repairing a die, unit mm.The advantages of the utility model, the annulus height by adjusting lower die can accurately adjust the size that mold squeezes round tube class hole size, and not have to carry out any transformation to mold core.
Description
Technical field
The utility model relates to a kind of hot extrusion shaping mold of round tube profile, in particular to a kind of adjustable round tube class is squeezed
Press the mold of hole size.
Background technique
In the hot extrusion production of round tube profile, it usually will appear some inner holes situation less than normal, it is known that inner hole is big
Can be small but small usually just without good method by the core print vehicle of upper mould, had in the past a kind of cumbersome and not
Perfect method is exactly to freeze in the outer circle of mold core print, and then Vehicle Processing again, this processing mode is not only cumbersome, heavier
Want be since mold is when freezing, high temperature can make die working length annealing lose the performances such as original stiffness hardness (so as to
Mould discharging precision can be seriously affected), when actual treatment, must consider with caution.Inner hole is less than normal, and usually two reasons cause, and one
It is that mold long-time service causes the abrasion of mold core print to become smaller, the other is due to the theoretical size and actual needs of the design of mold core print
Core print size it is less than normal.Such as in the extruding production of round tube industry material, especially some high precision photoelectric rifles take aim at round tube class zero
When the extruding production of part, the exigent round tube profile of some hole sizes is often had, this kind of profile deviation precision is high, and some is only
There is a deviation within 5, precision is really not counting high for machining for 5 deviations, but for hot-pressed,
Just very high, this is a kind of very big challenge, then outstanding mold designer to mold design, for this high-precision profile
Extrusion die, it is also difficult to guarantee once to reach Eligibility requirements when mold extrusion molding, this is because mold design personnel are setting
It is the size that round tube upper mould core print is designed according to the washing shrinkage of hot-extrusion mold working environment setting when counting mold, it is right
In the not high section of required precision, generally empirically the mold core area of bed of washing shrinkage design can satisfy requirement substantially, but right
In high-precision size as noted earlier, it is difficult to ensure that.To be on the safe side, mold design personnel generally can be the core print of upper mold
Be sized for it is bigger than normal, if in die trial, size is big in this way, then will mold stew it is empty after bring cooperation processing out, ask professional turner
Upper lathe press die trial dimensioned vehicle small size, nevertheless, be still difficult a train standard, sometimes even size vehicle obtain it is too small,
Core shift etc. causes mold unqualified or scraps, and this kind of processing has certain risk, and since lathe process to be used carries out core shift
Accurately control Vehicle Processing amount, this kind of processing generally need external coordination that professional is asked to process again for correction, and the personnel that repair a die are generally incompetent, and method is complete
At the period for completing to repair a die is also relatively long.
Utility model content
The technical issues of the utility model is solved is to provide a kind of adjustable round tube class profile extrusion molding hole size
Mold, pass through adjust lower die annular step) highly can be thus achieved adjust mold squeeze round tube class (when profile) in
The size of pore size, and do not have to carry out any transformation to mold core.
In order to solve the above technical problems, the technical solution that the utility model is taken is as follows: a kind of adjustable round tube class is crowded
The mold for pressing hole size includes upper die and lower die, and the upper mold lower end is snapped together with the lower die upper end；
The upper mold upper end is equipped with multiple tap holes around central point distribution, and multiple tap holes are under the upper mold
End receiving room converges, and mold core is arranged with central point corresponding position in the receiving room；
The lower die upper end is equipped with bonding container, is equipped with circular hole cavity, the circular hole cavity exit at the bonding container center
Across lower die wall to lower die lower end, annular step is equipped in the bonding container circular hole cavity edge；
Mold core is inserted into circular hole cavity by annular step when the upper mold lower end and the lower die upper end fasten.
Further into the annular step interior diameter is 80-110 bigger than the circular hole cavity interior diameter.
Further, the annular step is 3-5 millimeters high, 3-6 millimeters of width.
Further, the receiving room outer profile is similar to bonding container outer profile；
Receiving room and bonding container fasten when the upper mold lower end and the lower die upper end fasten.
It includes true defining K value that a kind of adjustable round tube class, which squeezes the adjusting method of hole size mold, and K is adjustment factor,
0.97 ≤K≥1.3；Δ d is the changing value of round tube diameter of bore size after repairing a die, unit mm；Δ h is circular ring shape when repairing a die
The height that step is adjusted, unit mm；Δ r is the difference of step cutting pattern inside radius and lower die internal bore radius i.e. away from lower die hole
Border width, unit mm；Δ d=0.25k* Δ h/ Δ r.
Preferential, when round tube wall thickness is in 2-3mm, K value is 1.
Preferably, when round tube wall thickness is in 1.2-1.5mm, K value is 0.98.
Preferably, when round tube wall thickness is in 4-5mm, K value is 1.12.
Preferably, when round tube wall thickness is in 5-6mm, K value is 1.18.
Preferably, when round tube wall thickness is in 6-7mm, K value is 1.22.
The utility model has the beneficial effect that: when 1, needing plus increasing extruding tubing hole size, can increase the height of annulus
Degree, the method for increasing height can use the method for welding, it is desirable to reduce when squeezing tubing hole size, can reduce annulus
Highly, reduced method can use mill rifle, and not have to such as existing method de-regulation core print, even if core print is ground because being used for a long time
Damage, need not also remove more mold exchange, it is only necessary to and it adjusts the height of annulus i.e. and can control mold and squeeze out tubing internal diameter, while
Mold core can be designed in phase homotype directly in the Position Design annular step as described above of lower die when mold design
The size of material inner hole, such mould discharging inner hole generally will not be smaller than what is required, can suitably shorten circular ring shape according to die trial size
Step height reduces hole size.
2, when annulus cross sectional form is rectangle or square, the height and mold that annulus increases or decreases squeeze outlet pipe
Class internal diameter increases or decreases in a linear relationship.
Detailed description of the invention
Fig. 1 is the utility model mold structure diagram.
Fig. 2 is A-A sectional schematic diagram in Fig. 1.
Fig. 3 is upper die structure schematic diagram.
Fig. 4 is lower die structure schematic diagram.
In figure: upper mold 1, lower die 2, tap hole 3, receiving room 4, mold core 5, bonding container 6, circular hole cavity 7, annulus 8.
Specific embodiment
In Fig. 1,2, it includes upper mold 1, lower die 2, the upper mold that a kind of adjustable round tube class, which squeezes the mold of hole size,
1 lower end is snapped together with 2 upper end of lower die, and upper mold 1 is all made of particular manufacturing craft steel with lower die 2 and is made, and 1 lower end of upper mold is set
There is fixed column, 2 upper end of lower die is equipped with fixation hole, and when the two fastens, fixed column is inserted into fixation hole；
In Fig. 3,1 upper end of upper mold is set there are three the tap hole 3 around central point distribution, and three tap holes 3 are in institute
It states upper mold lower end receiving room 4 to converge, mold core 5 is set with central point corresponding position in the receiving room 4；
In Fig. 4,2 upper end of lower die is equipped with bonding container 6, is equipped with circular hole cavity 7, the circular hole at 6 center of bonding container
The outlet of cavity 7 is equipped with annulus 8 across lower die wall to 2 lower end of lower die, at 6 circular hole cavity of bonding container, 7 edge；
Preferably, 4 outer profile of receiving room is similar to 6 outer profile of bonding container；
1 lower end of upper mold and 2 upper end of lower die fasten receiving room 4 and bonding container 6 fastens, receiving room 4 and bonding container
Upper mold 1 can be improved for 6 fastenings and lower die 2 fastens, the leakproofness for fastening the two.
Mold core 5 is inserted into circular hole cavity 7 by annulus 8 when 1 lower end of upper mold and 2 upper end of lower die fasten, and is used
When the utility model mold squeezes circle class pipe, first 1 lower end of upper mold and 2 upper end of lower die are fastened, the aluminium of high temperature and pressure
Alloy is uniformly entered in the receiving room 4 of upper mold 1 by the tap hole 3 of 1 upper end of upper mold, and is entered in bonding container 6, Zhi Houman
It crosses annular step 8 and is extruded into across lower die 2 from the outlet of 2 lower end circular hole cavity 7 of lower die into mold core 5 with 7 gap of circular hole cavity
Type dismantles upper mold 1 and lower die 2 if the round tube diameter of extrusion forming is bigger than design value, by the height (institute here of annulus 8
The height for the annulus 8 stated is the vertical range from 6 bottom surface of bonding container to 8 top surface of annulus) increase, following extrusion forming
Round tube diameter is smaller than design value, then dismantles upper mold 1 and lower die 2, and the height of annulus 8 is reduced.
Preferably, 8 interior diameter of annulus is 80-110 bigger than the circular hole cavity overall diameter (1 is equal to 0.01 millimeter), circle
8 3-5 high millimeters of ring, 3-6 millimeters of width；
Such as: test mould using the above structureSpecification mold (size) produces internal diameter 13, outer diameter 17.8
Round tube；
8 interior diameter of annulus is 100 bigger than 7 overall diameter of circular hole cavity, i.e. distance of 7 outer wall of circular hole cavity away from circle ring inner wall is
50,8 high 4 millimeters of annulus, 4-5 millimeters of width；
Under identical structure situation, it is not provided with the comparison mold of annulus 8；
When test, round tube is produced with comparison mold, test mould respectively using identical extruding condition, the two differs 40
Left and right, by repetition test, test mould squeezes round tube, and 8 height of (in the range of 2-5 millimeters of height) annulus often shortens 1 milli
Rice, round tube inside diameter are reduced by 10 or so, and inner hole discharging size can be effectively reduced by so analogizing；(in 2-5 millimeters of model of height
In enclosing) highly every 1 millimeter of the increase of annulus 8, round tube inside diameter is increased by 10 or so.
And when comparing mold and needing to change round tube inside diameter, it needs to be welded on mold core or with lathe vehicle, mold core is to squeeze
The core component of round tube does repairing on it and be easy to cause mold core print core shift etc. and round tube inside diameter is caused relatively large deviation occur.
When test mould needs to change round tube inside diameter, as long as increasing or decreasing the height of annulus 8, change mold insert structure is not spent,
After mold core long-time is using wearing, round tube caused by making up mold core abrasion can also be gone by the height of adjusting annulus 8
The variation of internal diameter.
It includes true defining K value that a kind of adjustable round tube class, which squeezes the adjusting method of hole size mold, and K is adjustment factor,
0.97≤K ≥1.3；Δ d is the changing value of round tube diameter of bore size after repairing a die, unit mm；
Δ h is the height that annular step is adjusted when repairing a die, unit mm；Δ r is step cutting pattern inside radius and lower die
The difference of internal bore radius is the border width away from lower die hole, unit mm；Δ d=0.25k* Δ h/ Δ r.
Preferably, when round tube wall thickness is in 2-3mm, K value is 1.
Preferably, when round tube wall thickness is in 1.2-1.5mm, K value is 0.98-0.99.
Preferably, when round tube wall thickness is in 4-5mm, K value is 1.12-1.13.
Preferably, when round tube wall thickness is in 5-6mm, K value is 1.18-1.19.
Preferably, when round tube wall thickness is in 6-7mm, K value is 1.22-1.23.
Embodiment described above is only the preferred embodiment of the utility model, does not therefore limit the guarantor of the utility model
Range is protected, thus it is all according to equivalence changes made by the shape of the utility model, construction and principle, the utility model should all be covered by
In protection scope.
Claims (4)
1. a kind of adjustable round tube class squeezes the mold of hole size, it is characterized in that: the mold includes upper die and lower die, it is described
Upper mold lower end is snapped together with the lower die upper end；
The upper mold upper end is equipped with multiple tap holes around central point distribution, and multiple tap holes are received in the upper mold lower end
Converge through receiving room, mold core is set with central point corresponding position in the receiving room；
The lower die upper end is equipped with bonding container, is equipped with circular hole cavity at the bonding container center, the circular hole cavity exit passes through
Lower die wall is equipped with annulus in the bonding container circular hole cavity edge to lower die lower end；
Mold core is inserted into circular hole cavity by annulus when the upper mold lower end and the lower die upper end fasten.
2. the mold that a kind of adjustable round tube class according to claim 1 squeezes hole size, it is characterised in that: the circle
Ring interior diameter is 80-110 bigger than the circular hole cavity overall diameter.
3. the mold that a kind of adjustable round tube class according to claim 1 squeezes hole size, it is characterised in that: the circle
Ring is 3-5 millimeters high, 3-6 millimeters of width.
4. the mold that a kind of adjustable round tube class according to claim 1 squeezes hole size, it is characterised in that: the receipts
Outdoor profile of receiving is similar to bonding container outer profile；
Receiving room and bonding container fasten when the upper mold lower end and the lower die upper end fasten.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820719987.6U CN208321652U (en) | 2018-05-15 | 2018-05-15 | A kind of adjustable round tube class squeezes the mold of hole size |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820719987.6U CN208321652U (en) | 2018-05-15 | 2018-05-15 | A kind of adjustable round tube class squeezes the mold of hole size |
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| CN208321652U true CN208321652U (en) | 2019-01-04 |
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| CN201820719987.6U Active CN208321652U (en) | 2018-05-15 | 2018-05-15 | A kind of adjustable round tube class squeezes the mold of hole size |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108453142A (en) * | 2018-05-15 | 2018-08-28 | 湖北宏箭轻合金材料科技有限公司 | A kind of adjustable pipe class squeezes the mold and adjusting method of hole size |
| CN110293141A (en) * | 2019-06-11 | 2019-10-01 | 昆明理工大学 | A kind of semi-solid state extrusion prepares the mold of copper pipe |
-
2018
- 2018-05-15 CN CN201820719987.6U patent/CN208321652U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108453142A (en) * | 2018-05-15 | 2018-08-28 | 湖北宏箭轻合金材料科技有限公司 | A kind of adjustable pipe class squeezes the mold and adjusting method of hole size |
| CN110293141A (en) * | 2019-06-11 | 2019-10-01 | 昆明理工大学 | A kind of semi-solid state extrusion prepares the mold of copper pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A die capable of adjusting the size of extrusion inner hole of round tubes Effective date of registration: 20230208 Granted publication date: 20190104 Pledgee: Bank of China Limited by Share Ltd. Three Gorges Branch Pledgor: HUBEI HONGJIAN LIGHT ALLOY MATERIAL TECHNOLOGY CO.,LTD. Registration number: Y2023420000031 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |