CN107913980A - Bend pipe mould - Google Patents
Bend pipe mould Download PDFInfo
- Publication number
- CN107913980A CN107913980A CN201610888850.9A CN201610888850A CN107913980A CN 107913980 A CN107913980 A CN 107913980A CN 201610888850 A CN201610888850 A CN 201610888850A CN 107913980 A CN107913980 A CN 107913980A
- Authority
- CN
- China
- Prior art keywords
- bend pipe
- bend
- straight
- inner core
- wax
- 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
Links
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 238000005266 casting Methods 0.000 claims description 10
- 230000005484 gravity Effects 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 238000005495 investment casting Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
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
- B22C9/04—Use of lost patterns
- B22C9/046—Use of patterns which are eliminated by the liquid metal in the mould
-
- 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
-
- 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
- B22C9/24—Moulds for peculiarly-shaped castings for hollow articles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The present invention proposes a kind of bend pipe mould, its bend pipe wax-pattern manufactured includes bent tube section and straight-tube portion, bend pipe mould includes lower die, upper mold and the inner core between upper mold and lower die, upper mold and lower die are positioned between the both side ends of inner core by tenon respectively, inner core longitudinally includes bend loss and the straight pipe to lean with bend loss medial extremity along it, the concaveconvex structure of mutual cooperation is formed between the medial extremity of bend loss and the medial extremity of straight pipe, the bend loss and straight pipe of inner core are respectively divided into three layers that upper, middle and lower is stacked along its transverse direction, it includes middle fuse, two side loose pieces positioned at middle fuse both sides and with middle fuse at grade, the two upper strata loose pieces on middle fuse and side loose piece, two lower floor's loose pieces under middle fuse and side loose piece.The bend pipe mould can increase stability in the mutual locking positioning of group mold process, and can increase depanning angle during form removal, mould is disengaged with wax-pattern, reduce modulus resistance.
Description
Technical field
The present invention relates to a kind of casting mould, more particularly to a kind of road bend pipe mould.
Background technology
Bend pipe casting is the common structure part in the fields such as chemical industry, petrochemical industry, aviation, since bend pipe inner cavity is difficult to process, for
The higher bend pipe casting of dimension precision requirement uses full form casting process one-pass molding mostly.Model casting is by pressing wax, system
The processing technology of cast product is made in the technical process such as shell, cast, and investment-casting has very high dimensional accuracy and any surface finish
Degree.
The tube chamber shaping of hot investment casting bend pipe wax-pattern at present uses wax-pattern segmented welding or pre-buried water-soluble core.It is existing
Wax-pattern segmented welding mode due to narrow on the inside of tube chamber and there is local big corner angle and be difficult to repair so that inner cavity splice bits
Put and leave obvious splicing seam or repair trace, influence the dimensional accuracy and surface roughness of inner cavity.Water-soluble core technique it is main
Problem is that dimensional stability is poor, since the positioning of water-soluble core core print and mould external mold is clearance fit, in casting pressure
Water-soluble core can be swung under power effect, cause wax-pattern wall thickness overproof, wax-pattern qualification rate is low.And the water-soluble core in terms of production
Time length is sloughed in thawing, it is necessary to which dedicated manufacturing equipment and production site, production efficiency is low, and cycle length is of high cost.
The content of the invention
The present invention proposes a kind of bend pipe mould, solves bend pipe wax-pattern welding deformation in the prior art and be difficult to repair ask
Topic, it also avoid water-soluble core long preparation period, positions the problems such as unstable.
The technical proposal of the invention is realized in this way：
A kind of bend pipe mould, its bend pipe wax-pattern for being used to manufacture include bent tube section and the straight tube being connected with the bent tube section
Part, including lower die, the upper mold in the lower die and the inner core between the upper mold and lower die, the bend pipe wax-pattern
By upper mold and lower die straight forming, the middle part of the inner core is used for the shaping of the inner surface of bend pipe wax-pattern for outer surface, the upper mold and
Lower die is positioned between the both side ends of the inner core by tenon respectively, and the inner core longitudinally includes curved with bend pipe wax-pattern along it
The corresponding bend loss of tube portion and straight pipe that is corresponding with the straight-tube portion of bend pipe wax-pattern and leaning with bend loss medial extremity, should
Form the concaveconvex structure of mutual cooperation between the medial extremity of bend loss and the medial extremity of straight pipe, the bend loss of the inner core and straight
Pipeline section is respectively divided into three layers that upper, middle and lower is stacked along its transverse direction, it includes middle fuse, positioned at middle fuse both sides and with
The two side loose pieces of middle fuse at grade, the two upper strata loose pieces on middle fuse and side loose piece, be arranged on
Two lower floor's loose pieces under middle fuse and side loose piece.
Preferred solution is mutually to be supported by ramp structure respectively between the loose piece of two upper strata and between two lower floor's loose pieces
Lean on.
Preferred solution is, and can also be mutual by dovetail configuration respectively between two lower floor's loose pieces between the loose piece of two upper strata
Positioning.
Preferred solution is that the position of centre of gravity of the straight-tube portion offers a fabrication hole.
Preferred solution is the bend pipe mould generally metal die.
Preferred solution is that the bend pipe mould is noted using lower open die in middle core pulling, casting form for side.
Beneficial effects of the present invention are：
The inner core of the bend pipe mould of the present invention is formed using bend loss and straight pipe two parts, and bend loss and straight pipe point
Not by the way of middle fuse and each loose piece coordinate, stability can be increased in the mutual locking positioning of group mold process, and can be
Increase depanning angle during form removal, mould is disengaged with wax-pattern, reduce modulus resistance, directly extracted so as to reduce in monoblock
Impact of the core to wax-pattern, reduces violence modulus, avoids the cracking of bend pipe wax-pattern.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the sectional view of the pre- obtained bend pipe wax-pattern of bend pipe mould of the present invention；
Fig. 2 is the structure diagram of bend pipe mould of the present invention；
Fig. 3 is the sectional views of Fig. 2 along the longitudinal centerline.
In figure：
10th, bend pipe wax-pattern；11st, bent tube section；12nd, straight-tube portion；13rd, fabrication hole；30th, lower die；50th, upper mold；60th, it is interior
Core；80th, tenon；61st, bend loss；62nd, straight pipe；63rd, middle fuse；64th, concaveconvex structure；65th, side loose piece；66th, upper strata is lived
Block；68th, lower floor's loose piece.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment 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 without making creative work
Embodiment, belongs to the scope of protection of the invention.
As shown in Figure 1, the pre- obtained bend pipe wax-pattern 10 of the bend pipe mould include bent tube section 11 and with the bent tube section 11
The straight-tube portion 12 of connection.The position of centre of gravity of the straight-tube portion 12 offers a fabrication hole 13.
As shown in Figures 2 and 3, which is noted using lower open die in middle core pulling, casting form for side.The bending die
Tool generally metal, it includes lower die 30, the upper mold 50 in the lower die 30 and determines between the upper mold 50 and lower die 30
Inner core 60 in the groove of position.The inner cavity of the bend pipe wax-pattern 10 of preproduction is formed between the inner core 60 and upper mold 50 and lower die 30.This is curved
The outer surface of pipe wax-pattern 10 is used to form bend pipe wax-pattern 10 by upper mold 50 and 30 straight forming of lower die, the middle part of the inner core 60
The shaping of inner surface, the upper mold 50 and lower die 30 are positioned between the both side ends of the inner core 60 by tenon 80 respectively.Each tenon
First 80 are arranged on the part at 10 both ends of bend pipe wax-pattern, for positioning inner core 60.The inner core 60 longitudinally includes and bend pipe wax-pattern along it
The 10 corresponding bend loss 61 of bent tube section 11 and it is corresponding with the straight-tube portion 12 of bend pipe wax-pattern 10 and with 61 medial extremity of bend loss
The straight pipe 62 to lean, forms the concavo-convex knot to cooperate between the medial extremity of the bend loss 62 and the medial extremity of straight pipe 62
Structure 64.
The bend loss 11 and straight pipe 62 of the inner core 60 are respectively divided into three layers that upper, middle and lower is stacked along its transverse direction, it is wrapped
Include middle fuse 63, positioned at middle 63 both sides of fuse and with middle fuse 63 two side loose pieces 65 at grade, set
In two upper strata loose pieces 66 on middle fuse 63 and side loose piece 65, two lower floors under middle fuse 63 and side loose piece 65
Loose piece 68.Abutted, be embodied by ramp structure respectively between the two upper stratas loose piece 66 and between two lower floor's loose pieces 68
When, it can be also mutually located respectively by dovetail configuration between the two upper stratas loose piece 66 and between two lower floor's loose pieces 68.
When the bend pipe mould 10 molds, the tenon 80 of corresponding Liang Kuai lower floors loose piece 66 is positioned over upper and lower mould 50,30 first
Locating slot in；Then seating side loose piece 65 and middle fuse 63, each side loose piece 65 are determined by upper mold 50 and lower die 30
Position groove is accurately positioned, and first installs concaveconvex structure when the middle fuse 63 of the straight pipe 62 and bend loss 61 is installed；Then close
Upper mold, is finally assembled into mould, die-filling completion in order by upper strata loose piece 66.
The bend pipe mould extracts each loose piece in order after the completion of casting, in bend loss 61 and straight pipe 62, extracts first
Middle fuse 63, then promotes side loose piece 65 to move horizontally, and is extracted out after disengaging wax-pattern to outside.Upper strata loose piece 66 is to moving down
It is dynamic, outwards extracted out after departing from wax-pattern, finally take out lower floor's loose piece 68, then upper mold is opened, take out complete bend pipe wax-pattern.
The inner core 60 of the bend pipe mould is formed using bend loss 61 and 62 two parts of straight pipe, and bend loss 61 and straight pipe
62 are respectively adopted the mode that middle fuse 63 coordinates with each loose piece 65,66,68, can increase in the mutual locking positioning of group mold process
Add stability, and depanning angle can be increased during form removal, mould is disengaged with wax-pattern, modulus resistance is reduced, so as to reduce
Impact of the monoblock inner core to wax-pattern is directly extracted, reduces violence modulus, avoids the cracking of bend pipe wax-pattern 10.The inner core 60 is adopted
Positioned with tenon 80, the structure positioning of male-female engagement is used between bend loss 61 and straight pipe 62, while three-dimensional software can be used
Straight-tube portion position of centre of gravity is simulated, fabrication hole 13 is opened up in 12 position of centre of gravity of straight-tube portion, to provide support for inner core 60.This is curved
The designing scheme positioning stablity of pipe mold 10, easy to operate, production efficiency is high, suitable mass production.And due to whole bend pipe
Mould 10 uses metal material, makes each mould fit clearance small, and dimensional accuracy is high, and surface quality is good, improves its internal light
Cleanliness.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on, should all be included in the protection scope of the present invention god.
Claims (6)
1. a kind of bend pipe mould, its bend pipe wax-pattern for being used to manufacture includes bent tube section and the straight sections being connected with the bent tube section
Point, it is characterised in that：Upper mold including lower die, in the lower die and the inner core between the upper mold and lower die, it is described curved
By upper mold and lower die straight forming, the middle part of the inner core is used for the shaping of the inner surface of bend pipe wax-pattern for the outer surface of pipe wax-pattern,
The upper mold and lower die are positioned between the both side ends of the inner core by tenon respectively, and the inner core includes along its longitudinal direction and bend pipe
The corresponding bend loss of bent tube section of wax-pattern and corresponding with the straight-tube portion of bend pipe wax-pattern and lean with bend loss medial extremity
Straight pipe, forms the concaveconvex structure of mutual cooperation between the medial extremity of the bend loss and the medial extremity of straight pipe, the inner core
Bend loss and straight pipe are respectively divided into three layers that upper, middle and lower is stacked along its transverse direction, it includes middle fuse, positioned at intermediate core
Sub- both sides and with the two side loose pieces of middle fuse at grade, two upper stratas on middle fuse and side loose piece
Loose piece, two lower floor's loose pieces under middle fuse and side loose piece.
2. bend pipe mould as claimed in claim 1, it is characterised in that：Between the loose piece of two upper strata and between two lower floor's loose pieces
Abutted respectively by ramp structure.
3. bend pipe mould as claimed in claim 1, it is characterised in that：Between the loose piece of two upper strata and between two lower floor's loose pieces
It is mutually located respectively by dovetail configuration.
4. bend pipe mould according to any one of claims 1 to 3, it is characterised in that：The position of centre of gravity of the straight-tube portion
Offer a fabrication hole.
5. bend pipe mould according to any one of claims 1 to 3, it is characterised in that：The bend pipe mould generally metal
Mould.
6. bend pipe mould according to any one of claims 1 to 3, it is characterised in that：The bend pipe mould is taken out using middle
Lower open die on core, casting form are noted for side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610888850.9A CN107913980B (en) | 2016-10-11 | 2016-10-11 | Pipe bending die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610888850.9A CN107913980B (en) | 2016-10-11 | 2016-10-11 | Pipe bending die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107913980A true CN107913980A (en) | 2018-04-17 |
| CN107913980B CN107913980B (en) | 2024-05-17 |
Family
ID=61891999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610888850.9A Active CN107913980B (en) | 2016-10-11 | 2016-10-11 | Pipe bending die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107913980B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112620585A (en) * | 2020-12-18 | 2021-04-09 | 襄阳市立强机械有限公司 | Integrated casting process for stainless steel U-shaped water pipe |
| CN114683489A (en) * | 2022-04-07 | 2022-07-01 | 东莞模德宝智能科技有限公司 | Pipe bending die |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112620585A (en) * | 2020-12-18 | 2021-04-09 | 襄阳市立强机械有限公司 | Integrated casting process for stainless steel U-shaped water pipe |
| CN114683489A (en) * | 2022-04-07 | 2022-07-01 | 东莞模德宝智能科技有限公司 | Pipe bending die |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107913980B (en) | 2024-05-17 |
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