CN110303111A - A kind of liftout attachment suitable for steel piston automation closed-die forging - Google Patents
A kind of liftout attachment suitable for steel piston automation closed-die forging Download PDFInfo
- Publication number
- CN110303111A CN110303111A CN201910619054.9A CN201910619054A CN110303111A CN 110303111 A CN110303111 A CN 110303111A CN 201910619054 A CN201910619054 A CN 201910619054A CN 110303111 A CN110303111 A CN 110303111A
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- Prior art keywords
- forging
- die
- ejector pin
- lower die
- die set
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- 238000005242 forging Methods 0.000 title claims abstract description 143
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 27
- 239000010959 steel Substances 0.000 title claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 24
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 description 7
- 238000000465 moulding Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 230000017260 vegetative to reproductive phase transition of meristem Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/08—Accessories for handling work or tools
- B21J13/14—Ejecting devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/18—Making machine elements pistons or plungers
Abstract
The present invention relates to forging mold fields, specifically disclose a kind of liftout attachment suitable for steel piston automation closed-die forging, including ejector pin of die set, forging mold lower die, forging equipment pedestal, lower die holder, forging equipment material jacking mechanism, mould cylinder and forging mold upper mold；Multiple vertical jogger holes are offered in the mold cavity bottom of forging mold lower die, jogger hole is connected to the mold cavity of forging mold lower die, ejector pin of die set engaged therewith is correspondingly arranged in each jogger hole, ejector pin of die set includes ejector pin of die set ontology and ejector pin of die set end, ejector pin of die set ontology and ejector pin of die set end are interference fit, the lower end of multiple ejector pin of die set is fixedly connected on the same backing plate mandril, and mould bases mandril is provided with below backing plate mandril.The present invention has that de- material reliable, high temperature high voltage resistant, deflection be small, long service life, is suitable for high-volume automatic forging.
Description
Technical field
The present invention relates to forging mold technical field, specifically a kind of top suitable for steel piston automation closed-die forging
Device out.
Background technique
Steel die forging piston dense structure, intensity height, good reliability realize high compression ratio, raising burning effect in engine
Rate reduces exhaust emissions, improves service life etc. performance and be better than traditional aluminium alloy compression casting piston, is novel energy-conserving engine
Technological development direction.
Steel piston generally has the characteristics that type chamber is deep, draft angle is small, wall thickness is relatively thin.When conventional " open type " die forging, forging
It is assigned to that two types of upper and lower mould are intracavitary, and ejecting mechanism ejecting force is relatively small, it is conventional that top can satisfy using T shape cylinder ejector rod
De- material process requirements out.
The feature high for small cylinder diameter piston size precision, machining allowance is small, takes " enclosed " of thin-sheet or non-trimming
Contour forging technique reaches and saves material, promotes Product Precision effect.Closed die forging mold is generally divided into formed punch, cavity plate, ejecting mechanism
Three bulks, in conventional forging mold ejecting mechanism using " T shape cylinder ejector rod " have the disadvantage that for it is some it is complex-shaped,
Small cylinder diameter piston forging arranges mandril space very little in mold ejection mechanism, and push rod structure size is small, mandril and forging contact surface
Product is small, and it is insufficient to will cause mandril intensity in this way；In closed-die forging, piston forging all in the intracavitary molding of drag, lead by upper and lower mould
It also is located at lower die to section, such forging ejection device power increases several times, and demoulding is difficult；Forging process, ejector pin of die set be in high temperature,
High pressure working environment is limited by space and structure, and spray aquadag and air blowing are ineffective to its lubrication；The above factor
Lead to problems such as conventional T shape cylinder ejector rod occur bending, abrasion, fracture during use, eventually leads to liftout attachment morning
Phase failure blank is stuck in mold cavity and can not take out, and whole production line needs to shut down, and reinstalls, preheated mold, when serious
It may also result in mold damage, human and material resources cost caused greatly to waste, automatic forging can not be adapted to and high-volume is made
Industry.
Summary of the invention
The purpose of the present invention is to provide a kind of liftout attachments suitable for steel piston automation closed-die forging, to solve
The problems mentioned above in the background art.
To achieve the above object, the invention provides the following technical scheme:
A kind of liftout attachment suitable for steel piston automation closed-die forging, including ejector pin of die set, forging mold lower die, forging
Plant bottom case, lower die holder, forging equipment material jacking mechanism, mould cylinder and forging mold upper mold；Lower die holder is fixedly mounted on forging equipment
On pedestal, mould cylinder vertically it is fixed on the lower die seat, on the lower die seat and be located in mould cylinder and be fixedly installed with backing plate, under forging mold
Mould is removably mounted on backing plate；The mold cavity of forging mold lower die is opening up, mold of the forging in forging mold lower die
The intracavitary forging molding of type；Forging mold upper mold moving up and down is provided with above forging mold lower die, under forging mold
Mould realizes forging process for fuel jointly；Multiple vertical jogger holes, jogger hole are offered in the mold cavity bottom of forging mold lower die
It is connected to the mold cavity of forging mold lower die, makes the tip contact of forging and jogger hole；Correspondence is set in each jogger hole
It is equipped with ejector pin of die set engaged therewith, ejector pin of die set includes ejector pin of die set ontology and ejector pin of die set end, ejector pin of die set ontology
It is interference fit, fit tolerance S7/h6 with ejector pin of die set end.When assembly, ejector pin of die set end is preheating to 350 DEG C or so, will
Ejector pin of die set ontology is fitted into ejector pin of die set end, is firmly combined after natural cooling, the effect of ejector pin of die set end: increasing mould
Has mandril self weight, it is ensured that ejector pin of die set can be fallen after rise；Prevent ejector pin of die set from integrally taking off release chamber with forging.Forged
The upper end of Cheng Zhong, ejector pin of die set ontology are directly contacted with forging, participate in forging molding.The lower end of multiple ejector pin of die set is fixedly connected
On the same backing plate mandril, mould bases mandril is provided with below backing plate mandril, mould bases mandril is also T-shaped structure, in backing plate
It is fixed with limited support block on inner wall, mould bases mandril is supported by limited support block, makes the upper end of mould bases mandril without departing from pad
Plate, the lower end of mould bases mandril is extend into forging equipment pedestal and end is fixedly connected on forging equipment material jacking mechanism, forges
(it is liquid commonly used in the art that forging equipment ejects hydraulic system to connection forging equipment ejection hydraulic system on the downside of equipment material jacking mechanism
Laminated structure is not described in detail herein) driving equipment, drive mould bases mandril to move up and down by forging equipment material jacking mechanism, it is real
Existing ejector pin of die set moves up and down, and the forging after forging is ejected.
Jogger hole is stepped hole, is set as guide section in the middle part of jogger hole, the length is 20-25mm.
There are two jogger hole settings, facilitates subsequent operation to separate, can also guarantee there is enough ejection pressure.
The material of ejector pin of die set ontology is mould steel H13, is heat-treated HRC48-52, and ejector pin of die set ontology side profile uses
Linear cutter guarantees that overall size precision, ejector pin of die set end material are adopted to avoid other processing methods there may be deformation
With lower-cost # steel, it is heat-treated HRC28-32.
Clearance fit between the ejector pin of die set ontology and jogger hole guarantees this physical efficiency of ejector pin of die set using larger gap
It is enough normal to fall after rise, and guarantee that remaining aquadag, oxide skin can flow away from gap in mold cavity, ejector pin of die set ontology and
Gap between the guide section of jogger hole is 0.3-0.5mm, the gap of the lower end non-guide section of ejector pin of die set end and jogger hole
For 1-1.2mm.
Backing plate mandril is T-shaped structure, and lower end protrudes into lower die holder, and upper end is located on lower die holder, and the upper end and backing plate it
Between clearance fit.
In the one circle lower die shrink ring of outer ledge setting of forging mold lower die, forging mold lower die and lower die prestressing force
Inclined-plane connects between circle, and upper end is tilted to center, and lower die shrink ring is buckled in the outside of forging mold lower die, by forging mold
Lower die is fixed, and is avoided it from being upwardly separated from lower die shrink ring, is fixed on the lateral wall of lower die shrink ring by horizontal bolt
There is lower clamping ring, lower clamping ring is bolted on the mould cylinder of underface, so that forging mold lower die be fixed.
Compared with prior art, the beneficial effects of the present invention are:
Clearance fit between jogger hole and ejector pin of die set ontology guarantees that ejector pin of die set ontology can be normal using larger gap
It falls after rise, and guarantees that remaining aquadag, oxide skin can flow away from gap in mold cavity；It is forging the upper end of ejector pin of die set
When direct contact with, participate in forging, improve the contact area of ejector pin of die set and forging；The present invention has de- material reliable, resistance to
High temperature and pressure, deflection be small, long service life, is suitable for high-volume automatic forging；It can effectively solve traditional " T shape cylinder top
Bar " is the problems such as steel piston automates the bending occurred in closed-die forging, abrasion, fracture.
Detailed description of the invention
Fig. 1 is a kind of original state structural schematic diagram of liftout attachment that closed-die forging is automated suitable for steel piston.
Fig. 2 is a kind of working state structure schematic diagram of liftout attachment that closed-die forging is automated suitable for steel piston.
Fig. 3 is a kind of structural representation of ejector pin of die set suitable for the liftout attachment that steel piston automates closed-die forging
Figure.
Fig. 4 is the structural schematic diagram of A-A in Fig. 3.
Fig. 5 is a kind of section view of forging mold lower die suitable for the liftout attachment that steel piston automates closed-die forging
Figure.
In figure: under 1- ejector pin of die set ontology, 2- ejector pin of die set end, 3- forging mold lower die, 4- forging equipment pedestal, 5-
Under die holder, 6- forging equipment material jacking mechanism, 7- mould bases mandril, 8- backing plate mandril, 9- backing plate, 10- mould cylinder, 11- lower clamping ring, 12-
Mould shrink ring, 13- forging mold upper mold, 14- forging, 15- jogger hole.
Specific embodiment
Embodiment 1
Please refer to figure, in the embodiment of the present invention, a kind of liftout attachment suitable for steel piston automation closed-die forging, including mould
Have mandril, forging mold lower die 3, forging equipment pedestal 4, lower die holder 5, forging equipment material jacking mechanism 6, mould cylinder 10 and forging mold
Upper mold 13；Lower die holder 5 is fixedly mounted on forging equipment pedestal 4, and mould cylinder 10 is fixed on vertically on lower die holder 5, on lower die holder 5
And be located in mould cylinder 10 and be fixedly installed with backing plate 9, forging mold lower die 3 is removably mounted on backing plate 9；Forging mold lower die 3
Mold cavity it is opening up, the forging molding in the mold cavity of forging mold lower die 3 of forging 14；In forging mold lower die 3
Top is provided with forging mold upper mold 13 moving up and down, realizes that forging 14 forges jointly with forging mold lower die 3.
Multiple vertical jogger holes 15 are offered in the mold cavity bottom of forging mold lower die 3, jogger hole 15 is step
The middle part in hole, jogger hole 15 is set as guide section, and the length is 20-25mm, the mould types of jogger hole 15 and forging mold lower die 3
Chamber connection, makes the tip contact of forging 14 Yu jogger hole 15；Preferably, there are two the settings of jogger hole 15, facilitate subsequent operation point
From can also guarantee there is enough ejection pressure.
Ejector pin of die set engaged therewith is correspondingly arranged in each jogger hole 15, ejector pin of die set includes ejector pin of die set
Ontology 1 and ejector pin of die set end 2, the material of ejector pin of die set ontology 1 are mould steel H13, are heat-treated HRC48-52, ejector pin of die set sheet
1 side profile of body uses linear cutter, and to avoid other processing methods, there may be deformations, guarantees overall size precision, mould
Have 2 material of mandril end and use lower-cost 45# steel, is heat-treated HRC28-32；Ejector pin of die set ontology 1 and ejector pin of die set end
2 be interference fit, fit tolerance S7/h6.When assembly, ejector pin of die set end 2 is preheating to 350 DEG C or so, by ejector pin of die set ontology 1
It is fitted into ejector pin of die set end 2, is firmly combined after natural cooling, the effect of ejector pin of die set end 2: increase and decrease ejector pin of die set is certainly
Weight, it is ensured that ejector pin of die set can be fallen after rise, prevent ejector pin of die set from integrally taking off release chamber with forging；In carrying out forging process, mould
The upper end of tool mandril ontology 1 is directly contacted with forging 14, participates in forging molding.
Clearance fit between the ejector pin of die set ontology 1 and jogger hole 15 guarantees ejector pin of die set ontology using larger gap
1 can normally fall after rise, and guarantee that remaining aquadag, oxide skin can flow away from gap in mold cavity, ejector pin of die set sheet
Gap between body 1 and the guide section of jogger hole 15 is 0.3-0.5mm, and the lower end of ejector pin of die set end 2 and jogger hole 15 is non-to lead
It is 1-1.2mm to the gap of section.
The lower end of multiple ejector pin of die set is fixedly connected on the same backing plate mandril 8, and backing plate mandril 8 is T-shaped structure, lower end
It protrudes into lower die holder 5, upper end is located on lower die holder 5, and clearance fit between the upper end and backing plate 9, and the lower section of backing plate mandril 8 is set
It is equipped with mould bases mandril 7, mould bases mandril 7 is also T-shaped structure, and limited support block is fixed on the inner wall of backing plate 9, passes through limit branch
Block supports mould bases mandril 7, makes the upper end of mould bases mandril 7 without departing from backing plate 9, and the lower end of mould bases mandril 7 extend into forging and sets
In standby pedestal 4 and end is fixedly connected on forging equipment material jacking mechanism 6, and connection forging is set on the downside of forging equipment material jacking mechanism 6
Standby ejection hydraulic system (it is hydraulic structure commonly used in the art that forging equipment, which ejects hydraulic system, is not described in detail herein) is driven
Dynamic equipment drives mould bases mandril 7 to move up and down, realizes moving up and down for ejector pin of die set, will forge by forging equipment material jacking mechanism 6
Forging 14 after making ejects.
Embodiment 2
On the basis of embodiment 1, the forging mold lower die 3 is detachably connected with backing plate 9 and can use with flowering structure, is forging
The one circle lower die shrink ring 12 of outer ledge setting for making lower mould 3, between forging mold lower die 3 and lower die shrink ring 12
Inclined-plane connection, and upper end is tilted to center, lower die shrink ring 12 is buckled in the outside of forging mold lower die 3, will be under forging mold
Mould 3 is fixed, avoids it from being upwardly separated from lower die shrink ring 12, is consolidated on the lateral wall of lower die shrink ring 12 by horizontal bolt
Surely there is lower clamping ring 11, lower clamping ring 11 is bolted on the mould cylinder 10 of underface, so that forging mold lower die 3 is fixed.
When needing to jack up the forging 14 after forging, forging equipment ejects hydraulic system driving equipment forging equipment liftout
Mechanism 6 is lifted up, and driving mould bases mandril 7, backing plate mandril 8, ejector pin of die set ontology 1, ejector pin of die set end 2 are to moving up upwards
It is dynamic, the forging 14 of top is ejected by 1 upper end of ejector pin of die set ontology；After forging 14 is jacked up, equipment ejects hydraulic system can
To keep pressure 3-5S, robot or manually forging is taken out, ejection process terminates；Then, forging equipment ejects hydraulic system
Pressure release makes forging equipment material jacking mechanism 6 drive mould bases mandril 7, backing plate mandril 8 downwards, to make ejector pin of die set ontology 1, mold
Mandril end 2 is fallen after rise, and mold returns to original state, into next complete impulse stroke.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (7)
1. a kind of liftout attachment suitable for steel piston automation closed-die forging, including ejector pin of die set, forging mold lower die
(3), forging equipment pedestal (4), lower die holder (5), forging equipment material jacking mechanism (6), mould cylinder (10) and forging mold upper mold (13)；
Lower die holder (5) is fixedly mounted on forging equipment pedestal (4), and mould cylinder (10) is fixed on vertically on lower die holder (5), in lower die holder
(5) it is fixedly installed with backing plate (9) on and in mould cylinder (10), forging mold lower die (3) is removably mounted on backing plate (9)；
The mold cavity of forging mold lower die (3) is opening up, is provided with forging moving up and down above forging mold lower die (3)
Upper mould (13), which is characterized in that offer multiple vertical jogger holes in the mold cavity bottom of forging mold lower die (3)
(15), jogger hole (15) is connected to the mold cavity of forging mold lower die (3), is correspondingly arranged in each jogger hole (15)
Ejector pin of die set engaged therewith, ejector pin of die set include ejector pin of die set ontology (1) and ejector pin of die set end (2), ejector pin of die set sheet
Body (1) and ejector pin of die set end (2) are interference fit, and the lower end of multiple ejector pin of die set is fixedly connected on the same backing plate mandril
(8) it on, is provided with below backing plate mandril (8) mould bases mandril (7), the lower end of mould bases mandril (7) extend into forging equipment pedestal
(4) in and end is fixedly connected on forging equipment material jacking mechanism (6).
2. a kind of liftout attachment suitable for steel piston automation closed-die forging according to claim 1, feature exist
In: the jogger hole (15) is stepped hole, and jogger hole is set as guide section in the middle part of (15), and the length is 20-25mm.
3. a kind of liftout attachment suitable for steel piston automation closed-die forging according to claim 2, feature exist
In: the material of ejector pin of die set ontology (1) is mould steel H13, and ejector pin of die set end (2) material uses 45# steel.
4. a kind of liftout attachment suitable for steel piston automation closed-die forging according to claim 3, feature exist
In: clearance fit between the ejector pin of die set ontology (1) and jogger hole (15), ejector pin of die set ontology (1) and jogger hole (15)
Gap between guide section is 0.3-0.5mm, and the gap of the lower end non-guide section of ejector pin of die set end (2) and jogger hole (15) is
1-1.2mm。
5. a kind of liftout attachment suitable for steel piston automation closed-die forging according to claim 1, feature exist
In: backing plate mandril (8) is T-shaped structure, and lower end is protruded into lower die holder (5), and upper end is located on lower die holder (5), and the upper end and pad
Clearance fit between plate (9).
6. -5 any a kind of liftout attachment suitable for steel piston automation closed-die forging according to claim 1,
It is characterized in that: in one circle lower die shrink ring (12) of outer ledge setting of forging mold lower die (3), lower die shrink ring (12)
Lateral wall on be fixed with lower clamping ring (11) by horizontal bolt, lower clamping ring (11) be bolted on immediately below mould cylinder
(10) on, so that forging mold lower die (3) are fixed.
7. a kind of liftout attachment suitable for steel piston automation closed-die forging according to claim 6, feature exist
In: inclined-plane is connect between the forging mold lower die (3) and lower die shrink ring (12), and upper end is tilted to center, and lower die is pre-
Circle stress (12) is buckled in the outside of forging mold lower die (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910619054.9A CN110303111A (en) | 2019-07-10 | 2019-07-10 | A kind of liftout attachment suitable for steel piston automation closed-die forging |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910619054.9A CN110303111A (en) | 2019-07-10 | 2019-07-10 | A kind of liftout attachment suitable for steel piston automation closed-die forging |
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| CN110303111A true CN110303111A (en) | 2019-10-08 |
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| CN201910619054.9A Pending CN110303111A (en) | 2019-07-10 | 2019-07-10 | A kind of liftout attachment suitable for steel piston automation closed-die forging |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111922275A (en) * | 2020-06-12 | 2020-11-13 | 中煤北京煤矿机械有限责任公司 | Die for machining middle cylinder piston head forging |
| CN113477867A (en) * | 2021-08-17 | 2021-10-08 | 中国航发沈阳黎明航空发动机有限责任公司 | Forging ejection device for automatic forging of blade |
| WO2021237815A1 (en) * | 2020-05-27 | 2021-12-02 | 浙江跃进机械有限公司 | Steel piston forging die |
| CN117463932A (en) * | 2023-12-12 | 2024-01-30 | 江苏威鹰机械有限公司 | Forging device with force feedback function for machining transmission belt wheel shaft |
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| CN113477867A (en) * | 2021-08-17 | 2021-10-08 | 中国航发沈阳黎明航空发动机有限责任公司 | Forging ejection device for automatic forging of blade |
| CN117463932A (en) * | 2023-12-12 | 2024-01-30 | 江苏威鹰机械有限公司 | Forging device with force feedback function for machining transmission belt wheel shaft |
| CN117463932B (en) * | 2023-12-12 | 2024-04-12 | 江苏威鹰机械有限公司 | Forging device with force feedback function for machining transmission belt wheel shaft |
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