CN110202020A - A kind of quick-changing type cylinder barrel indirect-extrusion mould - Google Patents
A kind of quick-changing type cylinder barrel indirect-extrusion mould Download PDFInfo
- Publication number
- CN110202020A CN110202020A CN201910575973.0A CN201910575973A CN110202020A CN 110202020 A CN110202020 A CN 110202020A CN 201910575973 A CN201910575973 A CN 201910575973A CN 110202020 A CN110202020 A CN 110202020A
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- China
- Prior art keywords
- cavity plate
- punch
- cooling
- quick
- external pressure
- 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.)
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- 238000001125 extrusion Methods 0.000 title claims abstract description 25
- 238000001816 cooling Methods 0.000 claims abstract description 75
- 230000000712 assembly Effects 0.000 claims abstract description 13
- 238000000429 assembly Methods 0.000 claims abstract description 13
- 238000009434 installation Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 4
- 238000004080 punching Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 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
- B21C29/00—Cooling or heating work or parts of the extrusion press; Gas treatment of work
- B21C29/04—Cooling or heating of press heads, dies or mandrels
Abstract
The invention discloses a kind of quick-changing type cylinder barrel indirect-extrusion mould, the connecting rod of upper die component is vertically arranged in upper mounting seat bottom, and formed punch is mounted on connecting rod lower end, is equipped with the first cooling passage extended vertically in connecting rod；The cavity plate of lower mold assemblies is mounted at the top of lower mounting seat, the die cavity for cooperating with upper die component is equipped with inside cavity plate, cooling jacket is set in outside cavity plate, the second cooling passage is equipped with inside cooling jacket, external pressure is fixed to be set in outside cooling jacket, and binding clasp and the fixed connection radial clamping external pressure of external pressure are fixed；It is reasonable in design, by the way that the cooling inside the first cooling passage realization punch-pin is arranged in the connecting rod of punch-pin, cooling jacket is set in outside cavity plate simultaneously, on the one hand it is located at the first cooling passage inside cavity plate and cooling of the second cooling passage cooperation realization to punch-pin and cavity plate outside cavity plate in process, prolong the service life, on the other hand convenient for replacement punch-pin and cavity plate as needed.
Description
Technical field
The present invention relates to metal forming field more particularly to a kind of quick-changing type cylinder barrel indirect-extrusion moulds.
Background technique
At present for the cylinder body of hydraulic bjuffer needed for special equipment, generally use solid bar or seamless steel pipe with
The mode of steel plate welding plug makes processing.Stock utilization is low, and machining allowance is big, and performance reliability is not high, manufacture at
This height.For the place of mechanical property requirements harshness, it is unable to reach only by way of heat treatment in the thicker place of thickness
Mechanical property needed for material, it is necessary to come thinning microstructure by way of forging processing, promote the mechanical property of material itself.
Existing mold, as " 35CrMo steel rear wall pipe is vertical anti-to be squeezed for the Chinese patent of 104858254 B of Publication No. CN
Technology disclosed in pressure technique and extrusion die used ", is made of upper die and lower die and pressing plate etc., due to the cooling dress of upper mold
It sets, punch-pin is monolithic construction, and die life is short in normal productive process, and when die change needs integral demounting, more
It is long to change the time, time-consuming and laborious.Lower die is double-layer structure, and cavity plate is placed directly on the inside of pressing mold, has cooling between two layers of mold
Water channel, it is necessary to assure otherwise the sealing of cooling water is easy leak, more demanding for the accuracy of manufacture of cavity plate, then replaces cavity plate
When also be easy to cause installation it is not in place, cause drainage.Need to dismantle multiple clamp nuts on periphery when cavity plate replacement simultaneously,
Change produce the time it is long, high production cost.The mold is time-consuming and laborious when for occurring embracing mould situation without punch-pin stripper apparatus.
Summary of the invention
To solve technical problem present in background technique, the present invention proposes a kind of quick-changing type cylinder barrel indirect-extrusion mould.
A kind of quick-changing type cylinder barrel indirect-extrusion mould proposed by the present invention, comprising: upper die component, lower mold assemblies；
Upper die component includes upper mounting seat, connecting rod, punch, and connecting rod is vertically arranged in upper mounting seat bottom, convex
Stamping head is removably mounted at connecting rod lower end, is equipped with the first cooling passage extended vertically in connecting rod；
Lower mold assemblies are located at below upper die component, lower mold assemblies include lower mounting seat, cavity plate, cooling jacket, external pressure it is fixed,
Binding clasp, cavity plate are mounted at the top of lower mounting seat, and the die cavity for cooperating with upper die component, cooling jacket set are equipped with inside cavity plate
It is located at outside cavity plate, the second cooling passage is equipped with inside cooling jacket, external pressure is fixed to be set in outside cooling jacket, binding clasp
It is fixed with the fixed connection radial clamping external pressure of external pressure.
Preferably, the fixed middle part of external pressure is equipped with the clamping chamber extended downwardly from top, described to clamp intracavitary diameter from the top down
It is gradually increased.
Preferably, the cooling chamber extended downwardly from top is equipped in the middle part of cooling jacket, the cooling chamber internal diameter is from the top down
It is gradually increased.
Preferably, screw arrangement, second coolant liquid are logical from top to bottom around the cooling chamber for the second cooling passage
Road upper end is equipped with water outlet and lower end is equipped with water inlet.
Preferably, cushion block is equipped in the cooling chamber, cavity plate is arranged above cushion block.
It preferably, further include ejector beam, lower mounting seat is equipped with the installation through-hole extended vertically, and the die cavity bottom of cavity plate is set
There is opening and the opening is equipped with backing strap, ejector beam is vertically arranged in the installation through-hole and upper end is against backing strap.
It preferably, further include two punch-pin dischargers, two punch-pin dischargers are mounted on the fixed top of external pressure and in cavity plate
Two sides are arranged symmetrically.
Preferably, punch-pin discharger includes discharger ontology, sliding block, spring, limit sleeve, guide rod, and discharger ontology is solid
It is scheduled on the fixed top of external pressure, discharger ontology is equipped with to far from the perforative sliding slot in cavity plate direction, and it is separate that limit sleeve is located at sliding slot
It cavity plate one end and is connect with discharger ontology, limit sleeve is equipped with the limit hole being connected to sliding slot, and sliding block can be slidably mounted at cunning
In slot and it is located at limit sleeve close to cavity plate side, guide rod one end is equipped with limited block, and limited block is located at limit sleeve far from sliding block one
End, guide rod pass through the limit hole far from limited block one end and connect with sliding block, spring be located at limit sleeve far from sliding block side and
It is set in outside guide rod.
In the present invention, the quick-changing type cylinder barrel indirect-extrusion mould proposed, the connecting rod of upper die component is vertically arranged in peace
Seat bottom is filled, formed punch is mounted on connecting rod lower end, is equipped with the first cooling passage extended vertically in connecting rod；Lower mold assemblies
Cavity plate is mounted at the top of lower mounting seat, the die cavity for cooperating with upper die component is equipped with inside cavity plate, cooling jacket is set in recessed
Outside mould, the second cooling passage is equipped with inside cooling jacket, external pressure is fixed to be set in outside cooling jacket, binding clasp and external pressure
Fixed connection radial clamping external pressure is fixed.It is reasonable in design by the quick-changing type cylinder barrel indirect-extrusion mould of above-mentioned optimization design,
By the way that the cooling inside the first cooling passage realization punch-pin is arranged in the connecting rod of punch-pin, while cooling jacket being set in
Outside cavity plate, on the one hand it is located at the first cooling passage inside cavity plate and second cold outside cavity plate in process
But the cooling to punch-pin and cavity plate is realized in the cooperation of liquid channel, is prolonged the service life, on the other hand convenient for replacement punch-pin as needed
And cavity plate.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of quick-changing type cylinder barrel indirect-extrusion mould proposed by the present invention.
Fig. 2 is a kind of structural schematic diagram of the punch-pin discharger of quick-changing type cylinder barrel indirect-extrusion mould proposed by the present invention.
Specific embodiment
As illustrated in fig. 1 and 2, Fig. 1 is a kind of structural schematic diagram of quick-changing type cylinder barrel indirect-extrusion mould proposed by the present invention, figure
2 be a kind of structural schematic diagram of the punch-pin discharger of quick-changing type cylinder barrel indirect-extrusion mould proposed by the present invention.
Referring to Fig.1, a kind of quick-changing type cylinder barrel indirect-extrusion mould proposed by the present invention, comprising: upper die component, lower mold assemblies；
Upper die component includes upper mounting seat 11, connecting rod 12, punch 13, and connecting rod 12 is vertically arranged in upper mounting seat
11 bottoms, punch 13 are removably mounted at 12 lower end of connecting rod, are equipped with the first coolant liquid extended vertically in connecting rod 12
Channel；
Lower mold assemblies are located at below upper die component, and lower mold assemblies include lower mounting seat 21, cavity plate 22, cooling jacket 23, outer
Clamping sleeve 24, binding clasp 25, cavity plate 22 are mounted on 21 top of lower mounting seat, are equipped with inside cavity plate 22 for cooperating with upper die component
Die cavity, cooling jacket 23 is set in outside cavity plate 22, and the second cooling passage, external pressure fixed 24 are equipped with inside cooling jacket 23
It is set in outside cooling jacket 23, binding clasp 25 connect radial clamping external pressure fixed 24 with external pressure fixed 24.
In the specific work process of the quick-changing type cylinder barrel indirect-extrusion mould of the present embodiment, when processing, it is placed on for workpiece
In the die cavity of cavity plate, upper die component declines so that connecting rod and punch, which protrude into, completes extruding in cavity plate die cavity；It was squeezing
Cheng Zhong, the first cooling passage cool down punch in the middle part of connecting rod, while the second cooling passage is outside cavity plate
Week cools down cavity plate.
In the present embodiment, the quick-changing type cylinder barrel indirect-extrusion mould proposed, the connecting rod of upper die component are vertically arranged in
Upper mounting seat bottom, formed punch are mounted on connecting rod lower end, are equipped with the first cooling passage extended vertically in connecting rod；Lower die group
The cavity plate of part is mounted at the top of lower mounting seat, and the die cavity for cooperating with upper die component is equipped with inside cavity plate, and cooling jacket is arranged
Outside cavity plate, the second cooling passage is equipped with inside cooling jacket, external pressure is fixed to be set in outside cooling jacket, binding clasp with
The fixed connection radial clamping external pressure of external pressure is fixed.Pass through the quick-changing type cylinder barrel indirect-extrusion mould of above-mentioned optimization design, structure design
Rationally, cooling inside punch-pin is realized by the way that the first cooling passage is arranged in the connecting rod of punch-pin, while by cooling jacket
Be set in outside cavity plate, on the one hand in process be located at cavity plate inside the first cooling passage and outside cavity plate
The cooling to punch-pin and cavity plate is realized in the cooperation of second cooling passage, is prolonged the service life, and is on the other hand convenient for as needed more
Change punch-pin and cavity plate.
In a specific embodiment, fixed 24 middle part of external pressure is equipped with the clamping chamber extended downwardly from top, the clamping chamber
Internal diameter is gradually increased from the top down, equally, the cooling chamber extended downwardly from top, the cooling chamber is equipped in the middle part of cooling jacket 23
Internal diameter is gradually increased from the top down；When processing, the fixed holding effect with cooling jacket of external pressure is improved, when improving processing and demoulding
The reliability of lower mold assemblies installation.
In the specific arrangement method of the second cooling passage, the second cooling passage surrounds the cooling chamber from top to bottom
Screw arrangement, second cooling passage upper end is equipped with water outlet and lower end is equipped with water inlet；To guarantee the cooling effect of cavity plate
Fruit.
In other specific embodiments, cushion block 3 is equipped in the cooling chamber, cavity plate 22 is arranged above cushion block 3, improves
The suitability of lower mold assemblies is suitable for various sizes of cavity plate.
It further include ejector beam 5 for the ease of material after extruding demoulding, lower mounting seat 21 is equipped with the installation extended vertically
Through-hole, the die cavity bottom of cavity plate 22 is equipped with opening and the opening is equipped with backing strap 4, and ejector beam 5 is vertically arranged in the installation
In through-hole and upper end is against backing strap 4；After punching press, upper die component rises, and the workpiece after processing stays in cavity plate die cavity, passes through
Ejector beam is upward, pushes material block and expects that the workpiece above block ejects upwards together.
For the ease of from punch-pin loading and unloading, reference Fig. 2 further includes two punch-pin dischargers, two punch-pin dischargers installations
It is arranged symmetrically at outer 24 top of clamping sleeve and in 22 two sides of cavity plate；Punch-pin discharger be arranged at the top of cavity plate, when punching press terminate it is convex
When stamping head rises, punch-pin discharger prevents workpiece from rising jointly with punch-pin, helps punch-pin discharging；Meanwhile punch-pin discharger society
Meeting at the top of cavity plate, convenient for because use abrasion due to replace.
In the specific set-up mode of punch-pin discharger, punch-pin discharger includes discharger ontology 51, sliding block 52, spring
53, limit sleeve 54, guide rod 55, discharger ontology 51 are fixed on fixed 24 top of external pressure, and discharger ontology 51 is equipped with to remote
From the perforative sliding slot in 22 direction of cavity plate, limit sleeve 54 is located at sliding slot far from 22 one end of cavity plate and connect with discharger ontology 51, limit
Position set 54 is equipped with the limit hole being connected to sliding slot, and sliding block 52 can be slidably mounted in sliding slot and be located at limit sleeve 54 close to cavity plate
22 sides, 55 one end of guide rod are equipped with limited block, and limited block is located at limit sleeve 54 far from 52 one end of sliding block, and guide rod 55 is far from limit
Position block one end passes through the limit hole and connect with sliding block 52, and spring 53 is located at limit sleeve 54 leads far from 52 side of sliding block and being set in
To the outside of bar 55；Punching press front-slider is retracted to the direction far from cavity plate, and after punching press, sliding block pops up under the action of the spring,
Workpiece in cavity plate die cavity is limited, when so that upper die component rising, workpiece is from punch loading and unloading material.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (8)
1. a kind of quick-changing type cylinder barrel indirect-extrusion mould characterized by comprising upper die component, lower mold assemblies；
Upper die component includes upper mounting seat (11), connecting rod (12), punch (13), and connecting rod (12) is vertically arranged in peace
Seat (11) bottom is filled, punch (13) is removably mounted at connecting rod (12) lower end, vertical extend is equipped in connecting rod (12)
The first cooling passage；
Lower mold assemblies are located at below upper die component, lower mold assemblies include lower mounting seat (21), cavity plate (22), cooling jacket (23),
External pressure fixed (24), binding clasp (25), cavity plate (22) are mounted at the top of lower mounting seat (21), be equipped with inside cavity plate (22) for
The die cavity of upper die component cooperation, cooling jacket (23) are set in cavity plate (22) outside, and it is cold to be equipped with second inside cooling jacket (23)
But liquid channel, external pressure fixed (24) are set in cooling jacket (23) outside, and binding clasp (25) connect radial with external pressure fixed (24)
It is fixed (24) to clamp external pressure.
2. quick-changing type cylinder barrel indirect-extrusion mould according to claim 1, which is characterized in that be equipped in the middle part of external pressure fixed (24)
The clamping chamber extended downwardly from top, the intracavitary diameter of clamping are gradually increased from the top down.
3. quick-changing type cylinder barrel indirect-extrusion mould according to claim 1, which is characterized in that be equipped in the middle part of cooling jacket (23)
The cooling chamber extended downwardly from top, the cooling chamber internal diameter are gradually increased from the top down.
4. quick-changing type cylinder barrel indirect-extrusion mould according to claim 3, which is characterized in that the second cooling passage surrounds institute
Cooling chamber screw arrangement from top to bottom is stated, second cooling passage upper end is equipped with water outlet and lower end is equipped with water inlet.
5. quick-changing type cylinder barrel indirect-extrusion mould according to claim 3, which is characterized in that be equipped with cushion block in the cooling chamber
(3), cavity plate (22) setting is above cushion block (3).
6. quick-changing type cylinder barrel indirect-extrusion mould according to claim 1, which is characterized in that further include ejector beam (5), lower peace
Dress seat (21) is equipped with the installation through-hole extended vertically, and the die cavity bottom of cavity plate (22) is equipped with opening and the opening is equipped with material
It pads (4), ejector beam (5) is vertically arranged in the installation through-hole and upper end is against backing strap (4).
7. quick-changing type cylinder barrel indirect-extrusion mould according to claim 1 or 6, which is characterized in that further include that two punch-pin unload
Glassware, two punch-pin dischargers are mounted at the top of external pressure fixed (24) and are arranged symmetrically in cavity plate (22) two sides.
8. quick-changing type cylinder barrel indirect-extrusion mould according to claim 7, which is characterized in that punch-pin discharger includes discharger
Ontology (51), sliding block (52), spring (53), limit sleeve (54), guide rod (55), it is fixed that discharger ontology (51) is fixed on external pressure
(24) top, discharger ontology (51) are equipped with to far from the perforative sliding slot in cavity plate (22) direction, and limit sleeve (54) is located at sliding slot
It connect far from cavity plate (22) one end and with discharger ontology (51), limit sleeve (54) is equipped with the limit hole being connected to sliding slot, sliding
Block (52) can be slidably mounted in sliding slot and be located at limit sleeve (54) close to cavity plate (22) side, and guide rod (55) one end is equipped with limit
Position block, limited block are located at limit sleeve (54) far from sliding block (52) one end, and guide rod (55) passes through the limit far from limited block one end
Position hole is connect with sliding block (52), and spring (53) is located at limit sleeve (54) far from sliding block (52) side and is set in guide rod (55) outside
Portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910575973.0A CN110202020A (en) | 2019-06-28 | 2019-06-28 | A kind of quick-changing type cylinder barrel indirect-extrusion mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910575973.0A CN110202020A (en) | 2019-06-28 | 2019-06-28 | A kind of quick-changing type cylinder barrel indirect-extrusion mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110202020A true CN110202020A (en) | 2019-09-06 |
Family
ID=67795310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910575973.0A Pending CN110202020A (en) | 2019-06-28 | 2019-06-28 | A kind of quick-changing type cylinder barrel indirect-extrusion mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110202020A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1003442A (en) * | 1963-05-23 | 1965-09-02 | Lamson & Sessions Co | Improvements in or relating to a die apparatus |
| JPH08267120A (en) * | 1995-03-30 | 1996-10-15 | Musashi Seimitsu Ind Co Ltd | Die device for extrusion molding |
| JPH0938719A (en) * | 1995-07-28 | 1997-02-10 | Furukawa Electric Co Ltd:The | Method for extruding shaped material, dummy block in extrusion apparatus for shaped material and extrusion apparatus for shaped material |
| CN1799721A (en) * | 2005-12-29 | 2006-07-12 | 大连冶金结晶器有限公司 | Adjustable mold employing reverse extrusion and draw forming for raw copper tube of mould, reverse extrusion and draw forming method thereof |
| CN201189527Y (en) * | 2008-03-11 | 2009-02-04 | 济南中川汽车零部件有限公司 | Semi-axis sleeve extrusion die |
| CN103191945A (en) * | 2012-01-10 | 2013-07-10 | 江苏舒恒管夹制造有限公司 | Method and device for high-pressure hydraulic flange plasticity forming |
| CN203494928U (en) * | 2013-08-19 | 2014-03-26 | 泉州恒劲机械有限公司 | Bucket tooth closed type hot-extrusion mould |
| CN104858254A (en) * | 2014-02-24 | 2015-08-26 | 苏州昆仑重型装备制造有限公司 | 35CrMo steel thick-walled tube vertical backward extrusion method, and extrusion die thereof |
| CN109794554A (en) * | 2019-03-11 | 2019-05-24 | 孝感金致科技有限公司 | A kind of stamping die with cooling duct |
| CN210547094U (en) * | 2019-06-28 | 2020-05-19 | 安徽嘉岳金属科技有限公司 | Quick-change type cylinder barrel backward extrusion die |
-
2019
- 2019-06-28 CN CN201910575973.0A patent/CN110202020A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1003442A (en) * | 1963-05-23 | 1965-09-02 | Lamson & Sessions Co | Improvements in or relating to a die apparatus |
| JPH08267120A (en) * | 1995-03-30 | 1996-10-15 | Musashi Seimitsu Ind Co Ltd | Die device for extrusion molding |
| JPH0938719A (en) * | 1995-07-28 | 1997-02-10 | Furukawa Electric Co Ltd:The | Method for extruding shaped material, dummy block in extrusion apparatus for shaped material and extrusion apparatus for shaped material |
| CN1799721A (en) * | 2005-12-29 | 2006-07-12 | 大连冶金结晶器有限公司 | Adjustable mold employing reverse extrusion and draw forming for raw copper tube of mould, reverse extrusion and draw forming method thereof |
| CN201189527Y (en) * | 2008-03-11 | 2009-02-04 | 济南中川汽车零部件有限公司 | Semi-axis sleeve extrusion die |
| CN103191945A (en) * | 2012-01-10 | 2013-07-10 | 江苏舒恒管夹制造有限公司 | Method and device for high-pressure hydraulic flange plasticity forming |
| CN203494928U (en) * | 2013-08-19 | 2014-03-26 | 泉州恒劲机械有限公司 | Bucket tooth closed type hot-extrusion mould |
| CN104858254A (en) * | 2014-02-24 | 2015-08-26 | 苏州昆仑重型装备制造有限公司 | 35CrMo steel thick-walled tube vertical backward extrusion method, and extrusion die thereof |
| CN109794554A (en) * | 2019-03-11 | 2019-05-24 | 孝感金致科技有限公司 | A kind of stamping die with cooling duct |
| CN210547094U (en) * | 2019-06-28 | 2020-05-19 | 安徽嘉岳金属科技有限公司 | Quick-change type cylinder barrel backward extrusion die |
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