CN109013737A - A kind of extrusion die of the big wide cut of track vehicle body skirtboard than thin-wall section - Google Patents
A kind of extrusion die of the big wide cut of track vehicle body skirtboard than thin-wall section Download PDFInfo
- Publication number
- CN109013737A CN109013737A CN201811204142.4A CN201811204142A CN109013737A CN 109013737 A CN109013737 A CN 109013737A CN 201811204142 A CN201811204142 A CN 201811204142A CN 109013737 A CN109013737 A CN 109013737A
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- die
- mold
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- vehicle body
- wall section
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- 238000001125 extrusion Methods 0.000 title claims abstract description 27
- 238000001816 cooling Methods 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 14
- 230000009194 climbing Effects 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 abstract description 9
- 239000002184 metal Substances 0.000 abstract description 9
- 235000012438 extruded product Nutrition 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 5
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 4
- 230000008859 change Effects 0.000 abstract description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005476 soldering Methods 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 208000010392 Bone Fractures Diseases 0.000 description 1
- 206010017076 Fracture Diseases 0.000 description 1
- 208000025599 Heat Stress disease Diseases 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000007723 die pressing method Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C33/00—Feeding extrusion presses with metal to be extruded ; Loading the dummy block
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Of Metal (AREA)
Abstract
The invention belongs to aluminium alloy extrusion mould fields, it is related to a kind of extrusion die of the big wide cut of track vehicle body skirtboard than thin-wall section, using the scheme for reducing mold center portion feed area, effectively reduce the feed of upper die mold center portion tap hole, feed area and the expanding area on the outside of upper mold are increased, to achieve the purpose that increase upper mold two sides feed.By adding bridge pier at shunt bridge both ends, the structural strength of shunt bridge is greatly improved, effectively solves the problems, such as to cause fracture because shunt bridge intensity is insufficient；Using the bonding container of butterfly, the mobility of metal can be accelerated, eliminate the dead zone between tap hole, reduce crush resistance, to improve extruded product weldquality；Cooling device is set at lower die work belt, and solving mold, temperature change is larger in extrusion process, to cause mold hot fatigue problem, while being of great significance to the service life for improving extruded product surface quality and mold.
Description
Technical field
The invention belongs to aluminium alloy extrusion mould fields, are related to a kind of big wide cut of track vehicle body skirtboard squeezing than thin-wall section
Compression mould.
Background technique
Existing aluminum alloy mould design rests on the degree that product width is less than 700mm, is greater than to product width
For the profile of 700mm, extruder extrusion cylinder diameter is small, and extension feed is excessive, and mold design is difficult, and product molding is very
Difficulty, the qualification rate of machine is very low on mold.Therefore, it is necessary to be directed to, width is larger, wide cut is bigger, the relatively thin profile of integral thickness
Corresponding mold is designed, to meet the needs of modern production.
Summary of the invention
In view of this, the extrusion die the purpose of the present invention is to provide a kind of big wide cut of track vehicle body skirtboard than thin-wall section
Tool, the middle part by reducing mold are fed, and are increased the two sides feed of mold, are made product uniform feeding, it is qualified to improve machine on mold
Rate.
In order to achieve the above objectives, the invention provides the following technical scheme:
A kind of big wide cut of track vehicle body skirtboard including is carried out by limiting device mutually solid than the extrusion die of thin-wall section
Fixed upper mold and lower die is equipped with mold core in the upper mold, is equipped with shunt bridge in the side of mold core, in mold core towards the side of lower die
One or more tap holes are equipped with, are equipped with feeder channel in tap hole；The lower die is equipped with bonding container towards the side of upper mold
And die hole type chamber, the position opposite with mold core are equipped with empty knife, work belt is located between empty knife and mold core；Upper mold and lower die phase
The end face of cooperation is counterface；The two sides of the shunt bridge are equipped with bridge pier, which is " eight " word with certain inclination angle
"=" type setting of type setting or two sides in parallel；Further include that upper mold is set far from the deflector on the side of lower die, material from
Deflector enters far from the side of upper mold, which is charging end face；And lower die is set far from the mould on the side of upper mold
Pad, material are exported from die-cushion far from the side of lower die, which is discharging end face.
Optionally, it is connected between the tap hole and feeder channel by perforation.
Optionally, fixation is attached by positioning pin and screw between the upper mold and lower die, in upper mold and lower die phase
Corresponding position is equipped with dowel hole and cooperation screw hole.
Optionally, the thickness of the bridge pier is greater than shunt bridge, and excessive for circular arc between shunt bridge and bridge pier, the circular arc half
Diameter is 15~25mm, including 15mm and 25mm.
Optionally, the mold core is equipped with the slope protection of rounding off close to one end of bonding container.
Optionally, the side of the die-cushion is additionally provided with climbing form hole.
Optionally, there are two the climbing form hole is set, it is symmetricly set on die-cushion side.
It optionally, further include the cooling device being arranged at work belt, the cooling device includes liquid nitrogen system and temperature
Control system.
Optionally, the die hole type chamber is connected with cup.
Optionally, the inner wall of the bonding container is rounding off, and whole bonding container is in butterfly.
The beneficial effects of the present invention are:
1, the deflector in the present invention uses the scheme of expanding area, reduces the feed of upper die mold center portion tap hole, adds
Feed area and expanding area on the outside of big upper mold, to achieve the purpose that increase upper mold two sides feed, tap hole in upper mold
Area be stepped up by mold core to outside, the area of middle part tap hole is about 8000mm2, outside shunts hole area and is about
16000mm2。
2, upper mold feeding inlet two sides shunt bridge respectively reduces 64mm and forms material-holding chamber body in the present invention, increases appearance material space,
Keep the feed far from core portion more sufficient, material-holding chamber body is connect with charging end face in 11 ° and 52 ° of inclined-plane, accelerates material
The speed that body is flowed to material-holding chamber body, upper mold increase soldering height and the space of Material, make Material to shunt bridge sinking 15mm
Welding can sufficiently be merged.
3, the present invention greatly improves the structural strength of shunt bridge by adding bridge pier at shunt bridge both ends, effectively solve because
Shunt bridge intensity is insufficient and causes the problem of being broken；Using the bonding container of butterfly, the mobility of metal can be accelerated, eliminate tap hole
Between dead zone, reduce crush resistance, to improve extruded product weldquality；Cooling device is set at lower die work belt,
Solving mold, temperature change is larger in extrusion process, to cause mold hot fatigue problem, while to raising extruded product
Surface quality and the service life of mold are significant.
Other advantages, target and feature of the invention will be illustrated in the following description to a certain extent, and
And to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, Huo Zheke
To be instructed from the practice of the present invention.Target of the invention and other advantages can be realized by following specification and
It obtains.
Detailed description of the invention
To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention is made below in conjunction with attached drawing excellent
The detailed description of choosing, in which:
Fig. 1 for the present invention in institute's extrudate section view；
Fig. 2 is top view of the invention；
Fig. 3 is cross-sectional view of the invention；
Fig. 4 is the partial enlarged view of die hole type chamber and preceding cell structure；
Fig. 5 is slope protection, perforation, work belt and the partial enlarged view for being fed slot structure.
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from
Various modifications or alterations are carried out under spirit of the invention.It should be noted that diagram provided in following embodiment is only to show
Meaning mode illustrates basic conception of the invention, and in the absence of conflict, the feature in following embodiment and embodiment can phase
Mutually combination.
Wherein, the drawings are for illustrative purposes only and are merely schematic diagrams, rather than pictorial diagram, should not be understood as to this
The limitation of invention；Embodiment in order to better illustrate the present invention, the certain components of attached drawing have omission, zoom in or out, not
Represent the size of actual product；It will be understood by those skilled in the art that certain known features and its explanation may be omitted and be in attached drawing
It is understood that.
The same or similar label correspond to the same or similar components in the attached drawing of the embodiment of the present invention；It is retouched in of the invention
In stating, it is to be understood that if there is the orientation or positional relationship of the instructions such as term " on ", "lower", "left", "right", "front", "rear"
To be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description of the present invention and simplification of the description, rather than indicate or
It implies that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore is described in attached drawing
The term of positional relationship only for illustration, is not considered as limiting the invention, for the ordinary skill of this field
For personnel, the concrete meaning of above-mentioned term can be understood as the case may be.
Fig. 1-Fig. 5 is please referred to, the element numbers in attached drawing respectively indicate: deflector 1, upper mold 2, lower die 3, die-cushion 4, soldering
Room 5, perforation 6, work belt 7, mold core 8, discharging end face 9, empty knife 10, counterface 11, feeder channel 12, charging end face 13, slope protection
14, shunt bridge 15, dowel hole 16, bridge pier 17, cooperation screw hole 18, die hole type chamber 19, tap hole 20, cup 21, climbing form hole 22.
A kind of extrusion die the present invention relates to big wide cut of track vehicle body skirtboard than thin-wall section, including pass through limiting device
The upper mold 2 and lower die 3 being fixed to each other, the upper mold 2 is interior to be equipped with mold core 8, is equipped with shunt bridge 15 in the side of mold core 8,
Mold core 8 is equipped with one or more tap holes 20 towards the side of lower die 3, is equipped with feeder channel 12 in tap hole 20；The lower die 3
It is equipped with bonding container 5 and die hole type chamber 19 towards the side of upper mold 2, the position opposite with mold core 8 is equipped with empty knife 10, work
Band 7 is located between empty knife 10 and mold core 8；The end face that upper mold 2 is matched with lower die 3 is counterface 11；The shunt bridge 15
Two sides are equipped with bridge pier 17, which is "=" type setting parallel with " eight " set up of character patt ern at certain inclination angle or two sides；
It further include the deflector 1 being arranged on side of the upper mold 2 far from lower die 3, material enters from deflector 1 far from the side of upper mold 2,
The end face is charging end face 13；And the die-cushion 4 on side of the lower die 3 far from upper mold 2 is set, material is from die-cushion 4 far under
The side of mould 3 exports, which is discharging end face 9.
Preferably, it is connected between the tap hole 20 and feeder channel 12 by perforation 6；Lead between the upper mold 2 and lower die 3
It crosses positioning pin and screw is attached fixation, dowel hole 16 and cooperation spiral shell are equipped in upper mold 2 and the corresponding position of lower die 3
Hole 18；The thickness of the bridge pier 17 is greater than shunt bridge 15, and excessive for circular arc between shunt bridge 15 and bridge pier 17, the arc radius
For 15~25mm, including 15mm and 25mm；The mold core 8 is equipped with the slope protection 14 of rounding off close to one end of bonding container 5；Institute
The side for stating die-cushion 4 is additionally provided with climbing form hole 22；There are two the climbing form hole 22 is set, it is symmetricly set on 4 side of die-cushion；It further include setting
The cooling device at work belt 7 is set, the cooling device includes liquid nitrogen system and temperature control system；The die hole type chamber 19
It is connected with cup 21；The inner wall of the bonding container 5 is rounding off, and whole bonding container 5 is in butterfly.
Due to being provided with the bridge pier 17 thicker than shunt bridge 15 in 15 root of shunt bridge, shunt bridge 15 on the one hand can be improved certainly
The structural strength of body can bear bigger crush resistance and squeeze torque；On the other hand since bridge pier 17 is wider than the body of a bridge and and bridge
Body arc transition increases and squeezes metal contact area, and the metal being dispersed on 15 inner surface unit area of shunt bridge is reduced,
The flowing for being conducive to metal, reduces crush resistance, solves the problems, such as 15 early fracture of shunt bridge；Bonding container 5 uses
The bonding container 5 of butterfly, due to not having the dead zone in structure, avoiding metal and resting in dead zone influences the mobility of metal and asks
Topic, to improve weldquality；Cooling device is set at the work belt 7 of lower die 3, the mould in extrusion process can be effectively reduced
Have the changing value of temperature, reduces material and heat fatigue problem occurs.
The cooling device includes liquid nitrogen system and temperature control system as a further modification of the present embodiment, to mold into
Row cooling can be liquid nitrogen as preferred cooling medium, due to liquid in this embodiment using cooling water or gas as cooling medium
Nitrogen low temperature at -196 DEG C hereinafter, can cool down rapidly to mold, to avoid mold temperature change is larger at work to cause heat tired
Labor problem monitors mold temperature in real time by temperature control system, avoids mold temperature fluctuated, make mold temperature
It remains in constant range, is conducive to improve extrusion speed and production efficiency.
The cooling structure for storing liquid nitrogen is additionally provided at the work belt 7 as a further modification of the present embodiment,.In work
Make setting and cooling structure similar in processing part shape at band 7, extrusion pressing type chamber can be reduced rapidly and uniformly and squeezed producing
On the one hand the temperature of product avoids extruded product surface temperature difference is excessive from causing breach or deformation excessive and other issues, another
Extruded product surface quality can be improved in aspect, improves the service life of mold.The mold core 8 as a further modification of the present embodiment,
Using projective table type structure, projective table type structure is more suitable for difficult extrudate compared to frustum type and bevel-type, is more advantageous to metal flow,
Improve extruded product quality.
Experiment shows: can effectively reduce the mold level of meeting with stresses in extrusion process and overall deformation through the invention
Amount: stress drops to 705MPa from 850MPa；Overall deformation drops to 0.12mm from 0.32mm, finally by aluminium alloy large-sized extrusion die
The service life of tool (diffluence combination die) is increased to 20~25 tons/mould, and more domestic universal 5~15 tons/mould of service life improves nearly 1
Times, substantially close to international most advanced level.
Deflector 1 in the present invention reduces the confession of 2 mold center portion tap hole 20 of upper mold using the scheme of extension feed area
Material, increases the feed area and expanding area in 2 outside of upper mold, to achieve the purpose that increase by 2 two sides of upper mold feed, upper mold 2
The area of middle tap hole 20 is stepped up by mold center portion to outside, and the area of middle part tap hole 20 is about 8000mm2, outside point
20 area of discharge orifice is about 16000mm2, it is about 27000mm that mold center portion, which is fed area,2, it is about 50000mm that outside, which is fed area,2
(unilateral side).
2 feeding inlet two sides shunt bridge of upper mold, 15 two sides respectively reduce 64mm and form material-holding chamber body in the present invention, increase appearance material
Space keeps the feed far from mold center portion more sufficient, and material-holding chamber body is connect with charging end face 13 in 11 ° and 52 ° of inclined-plane, adds
The speed that fast Material is flowed to material-holding chamber body, upper mold 2 increase the soldering height and sky of Material to 15 sinking 15mm of shunt bridge
Between, so that Material is sufficiently merged welding.
The present invention greatly improves the structural strength of shunt bridge 15, effectively solves by adding bridge pier 17 at 15 both ends of shunt bridge
Certainly cause the problem of being broken because 15 intensity of shunt bridge is insufficient；Using the bonding container 5 of butterfly, the mobility of metal can be accelerated, disappeared
Except the dead zone between tap hole 20, reduce crush resistance, to improve extruded product weldquality；It is set at 3 work belt 7 of lower die
Cooling device is set, solving mold, temperature change is larger in extrusion process, to cause mold hot fatigue problem, while to crowded
Die pressing product surface quality and the service life of mold are of great significance.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of the technical program, should all be covered in the present invention
Scope of the claims in.
Claims (10)
1. a kind of big wide cut of track vehicle body skirtboard is than the extrusion die of thin-wall section, it is characterised in that:
Including the upper mold and lower die being fixed to each other by limiting device, it is equipped with mold core in the upper mold, in the side of mold core
Equipped with shunt bridge, it is equipped with one or more tap holes on side of the mold core towards lower die, is equipped with feeder channel in tap hole；It is described
Lower die is equipped with bonding container and die hole type chamber towards the side of upper mold, and the position opposite with mold core is equipped with empty knife, work belt
Between empty knife and mold core；The end face that upper mold is matched with lower die is counterface；
The two sides of the shunt bridge are equipped with bridge pier, which is parallel with " eight " set up of character patt ern at certain inclination angle or two sides
The setting of "=" type；
It further include that upper mold is set far from the deflector on the side of lower die, material enters from deflector far from the side of upper mold,
The end face is charging end face；And lower die is set far from the die-cushion on the side of upper mold, material from die-cushion far from lower die one
Side export, the end face are discharging end face.
2. the big wide cut of track vehicle body skirtboard as described in claim 1 is than the extrusion die of thin-wall section, it is characterised in that: institute
It states and is connected between tap hole and feeder channel by perforation.
3. the big wide cut of track vehicle body skirtboard as described in claim 1 is than the extrusion die of thin-wall section, it is characterised in that: institute
It states and fixation is attached by positioning pin and screw between upper mold and lower die, it is fixed to be equipped in upper mold and the corresponding position of lower die
Position pin hole and cooperation screw hole.
4. the big wide cut of track vehicle body skirtboard as described in claim 1 is than the extrusion die of thin-wall section, it is characterised in that: institute
The thickness for stating bridge pier is greater than shunt bridge, and excessive for circular arc between shunt bridge and bridge pier, which is 15~25mm, including
15mm and 25mm.
5. the big wide cut of track vehicle body skirtboard as described in claim 1 is than the extrusion die of thin-wall section, it is characterised in that: institute
State the slope protection that mold core is equipped with rounding off close to one end of bonding container.
6. the big wide cut of track vehicle body skirtboard as described in claim 1 is than the extrusion die of thin-wall section, it is characterised in that: institute
The side for stating die-cushion is additionally provided with climbing form hole.
7. the big wide cut of track vehicle body skirtboard as described in claim 6 is than the extrusion die of thin-wall section, it is characterised in that: institute
It states there are two climbing form hole sets, is symmetricly set on die-cushion side.
8. the big wide cut of track vehicle body skirtboard as described in claim 1 is than the extrusion die of thin-wall section, it is characterised in that: also
Including the cooling device at work belt is arranged in, the cooling device includes liquid nitrogen system and temperature control system.
9. the big wide cut of track vehicle body skirtboard as described in claim 1 is than the extrusion die of thin-wall section, it is characterised in that: institute
Die hole type chamber is stated to be connected with cup.
10. the big wide cut of track vehicle body skirtboard as described in claim 1 is than the extrusion die of thin-wall section, it is characterised in that:
The inner wall of the bonding container is rounding off, and whole bonding container is in butterfly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811204142.4A CN109013737B (en) | 2018-10-16 | 2018-10-16 | Extrusion die of rail car body skirtboard large-width-ratio thin-wall section bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811204142.4A CN109013737B (en) | 2018-10-16 | 2018-10-16 | Extrusion die of rail car body skirtboard large-width-ratio thin-wall section bar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109013737A true CN109013737A (en) | 2018-12-18 |
| CN109013737B CN109013737B (en) | 2024-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811204142.4A Active CN109013737B (en) | 2018-10-16 | 2018-10-16 | Extrusion die of rail car body skirtboard large-width-ratio thin-wall section bar |
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| CN (1) | CN109013737B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110180909A (en) * | 2019-05-31 | 2019-08-30 | 辽宁忠旺集团有限公司 | A kind of ultra-wide thin-walled compartment profile material production technology |
| CN112692095A (en) * | 2020-12-07 | 2021-04-23 | 重庆友利森汽车科技有限公司 | Battery frame bottom plate extrusion die |
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