CN211330942U - Three-way punching die for round pipe - Google Patents
Three-way punching die for round pipe Download PDFInfo
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- CN211330942U CN211330942U CN201922058296.3U CN201922058296U CN211330942U CN 211330942 U CN211330942 U CN 211330942U CN 201922058296 U CN201922058296 U CN 201922058296U CN 211330942 U CN211330942 U CN 211330942U
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Abstract
The utility model discloses a three-dimensional cut-out press for on pipe, including last mould, lower mould, be provided with the mold core on the lower mould, be provided with on the mold core that first punch a hole and the second punches a hole, be provided with feeding mechanism and demoulding mechanism respectively at the front and back of lower mould, be provided with photoelectric switch on feeding mechanism, be fixed with a punch holder respectively in the left and right sides of lower mould, the punch holder includes: the mold comprises a box body, wherein a vertical plate capable of sliding left and right in the box body is arranged in the box body, a first punch and a spring are arranged on one side wall of the vertical plate facing a mold core, a push rod is arranged on the other side wall of the vertical plate, and a guide inclined plane is arranged at the end part of the push rod extending out of the box body; the upper die is provided with a second punch downwards, the left side and the right side of the upper die are respectively provided with a push plate with an inclined plane, and the inclined plane of the push plate is abutted against the guide inclined plane of the push rod. The utility model discloses simple structure, convenient operation has improved punching efficiency and machining precision greatly.
Description
Technical Field
The utility model relates to a mould especially relates to a three-dimensional cut-out press for on pipe.
Background
In order to connect the pipe fittings, a positioning slot hole and two connecting holes need to be processed on the pipe wall of each pipe fitting, then one pipe fitting is inserted into the other pipe fitting, the two connecting holes on the two pipe fittings are aligned one by one after the positioning is carried out through the positioning slot holes on the two pipe fittings, and then the connecting piece penetrates through the aligned connecting holes to connect the two pipe fittings. In the past, a positioning slotted hole is punched by a die, and then two connecting holes are punched respectively according to the positioning slotted hole as a reference point, so that the machining mode is low in efficiency, low in machining precision and even easy to miss machining.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a three-dimensional cut-out press on being used for pipe that efficiency of punching a hole is high, and machining precision is high.
In order to achieve the above object, the utility model adopts the following technical scheme: the three-way punching die for the round pipe comprises an upper die and a lower die, wherein a die core seat is arranged on the lower die, a die core hole is formed in the die core seat, a cylindrical die core is fixedly arranged in the die core hole in a penetrating manner, the front end of the die core extends forwards out of the die core seat, a first punching hole is vertically arranged on the upper side wall of the die core, a second punching hole transversely penetrating through the left side wall and the right side wall of the die core is arranged on the die core, and the position of the first punching hole and the position of the second punching hole on the die core are punching stations on the die core; a demoulding mechanism is arranged at the rear part of the lower die, a stripper plate is arranged on the demoulding mechanism, a plurality of material returning rods which extend forwards are arranged on the stripper plate, a plurality of through grooves which penetrate through the front side wall and the rear side wall of the die core seat are arranged on the inner side wall of the die core hole along the circumference, the through grooves are aligned with the end parts of the pipe fittings sleeved on the die core, the through grooves on the die core hole are respectively aligned with the material returning rods one by one, the material returning rods respectively extend into the corresponding through grooves, the material returning rods can move back and forth in the through grooves under the driving of the material returning mechanism, a feeding mechanism is arranged in front of the lower die, a photoelectric switch which can detect whether the pipe fittings reach the punching stations on the die core is arranged on the feeding mechanism, the photoelectric switch is electrically connected with a hydraulic press, a mounting plate is arranged between the feeding mechanism and the die core seat, arc grooves which can place the pipe fittings are arranged, the punch platform includes: the box body is internally provided with a vertical plate capable of sliding left and right in the box body, a first punch and a spring are arranged on one side wall of the vertical plate facing the mold core, the first punch extends out of the box body towards the mold core, the first punch is aligned with the second punch, the cross section of the first punch is the same as that of the second punch, the spring abuts against the box body, the other side wall of the vertical plate is provided with a push rod, the push rod extends out of the box body towards the opposite direction of the mold core, and a guide inclined plane is arranged at the end part of the push rod extending out of the box body; and a second punch aligned with the first punch is downwards arranged on the upper die, the section shape of the second punch is the same as that of the first punch, a push plate with an inclined plane is downwards arranged on the upper die positioned at the left side and the right side of the second punch respectively, and the inclined plane of the push plate abuts against the guide inclined plane of the push rod positioned at the same side of the push plate.
Further, the three-way punching die for the round pipe is characterized in that the demolding mechanism is a first air cylinder, a first mounting plate is arranged on the rear side of the lower die, the first air cylinder is fixed on the first mounting plate, the stripper plate is connected with a first piston on the first air cylinder, four stripper rods extending forwards are arranged on the stripper plate, four through grooves are formed in the inner side wall of the die core hole along the circumference, and the four stripper rods respectively extend into the four through grooves.
Further, the three-way punching die for the round pipe is characterized in that the feeding mechanism is a second cylinder, a second mounting plate is arranged on the front side of the lower die, the second cylinder is fixed on the second mounting plate, a second piston rod of the second cylinder is provided with a material ejecting plate, the material ejecting plate is located in the arc-shaped groove of the placing plate and can move back and forth in the arc-shaped groove under the driving of the second cylinder, and the photoelectric switch is arranged on the second cylinder.
Further, in the three-way punching die for the circular tube, a tapered guide part is provided at the front end of the die core.
Further, the three-way punching die for the round pipe is characterized in that the first punched hole longitudinally penetrates through the upper side wall and the lower side wall of the die core, and the die core is provided with a rectangular blanking hole which is communicated with the second punched hole and longitudinally penetrates through the upper side wall and the lower side wall of the die core.
Further, aforementioned a three-way cut-out press for on pipe, wherein, the connection structure between mold core and the mold core seat is: when the mold core is arranged in the mold core seat in a penetrating manner, the first through hole on the mold core seat is aligned with the second through hole on the mold core, and the cylindrical pin sequentially extends into the first through hole and the second through hole which are aligned with each other, so that the mold core is fixed in the mold core seat; the top of the mold core seat is also provided with two positioning holes, the upper mold is provided with two positioning pins downwards, and the two positioning holes are respectively aligned with the two positioning pins one by one.
Further, in the three-way punching die for the round pipe, four blind holes are formed in one side wall, facing the die core, of the vertical plate, a spring is placed in each blind hole, one end of each spring extends into each blind hole, and the other end of each spring abuts against the box body; two push rods in the same horizontal position are fixedly arranged on the other side wall of the vertical plate.
Further, in the three-way punching die for the circular tube, the left side and the right side of the upper die are respectively provided with the guide sleeve, the left side and the right side of the lower die are respectively provided with the guide post, and the two guide sleeves on the upper die are respectively sleeved on the two guide posts on the lower die.
Further, the three-way punching die for the round pipe is characterized in that the left side and the right side of the lower die are respectively provided with a fixed seat, the top of each fixed seat is provided with a downward threaded hole, and a limiting screw rod is connected in each threaded hole.
Further, the three-way punching die for the circular tube is characterized in that a die handle capable of being connected with a hydraulic machine is arranged at the top of the upper die.
A three-dimensional cut-out press for on pipe simple structure, convenient operation has not only realized automatic work, but also has improved punching efficiency and machining precision greatly.
Drawings
Fig. 1 is a schematic perspective view of a three-way punching die for a round pipe according to the present invention.
Fig. 2 is a front view schematically showing the structure of fig. 1.
Fig. 3 is a schematic perspective view of the lower mold of fig. 1.
Fig. 4 is a schematic top view of the structure of fig. 3.
Fig. 5 is a schematic sectional view of the die holder in the direction a-a of fig. 4.
Detailed Description
The technical solution of the present invention will be further explained with reference to the accompanying drawings and preferred embodiments.
As shown in fig. 1, fig. 2, fig. 3, fig. 4, and fig. 5, the three-way punching die for a round pipe of the present invention includes: the pipe fitting punching die comprises an upper die 1 and a lower die 2, wherein a die core seat 3 is arranged on the lower die 2, a die core hole 31 is formed in the die core seat 3, a cylindrical die core 32 penetrates through the die core hole 31, the front end of the die core 32 extends forwards out of the die core seat 3, a conical guide part is arranged at the front end part of the die core 32 so as to facilitate pipe fitting, a first punching hole 321 is vertically arranged on the upper side wall of the die core 32, the first punching hole 321 vertically penetrates through the upper side wall and the lower side wall of the die core 32, a second punching hole 322 transversely penetrating through the left side wall and the right side wall of the die core 32 is arranged on the die core 32, a rectangular blanking hole 323 communicating the second punching hole 322 and longitudinally penetrating through the die core 32 is arranged on the die core 32, and the position of the first punching hole 321 and the position.
Two positioning holes 34 and a first through hole which is communicated with the die core hole 31 and penetrates through the upper end and the lower end of the die core base 3 are formed in the top of the die core base 3, a second through hole which penetrates through the upper side wall and the lower side wall of the die core 32 is formed in the upper side wall of the die core 32, when the die core 32 is arranged in the die core hole 31 in a penetrating mode, the first through hole in the die core hole 31 is aligned with the second through hole in the die core 32, and then the cylindrical pin 33 sequentially extends into the first through hole and the second through hole which are aligned with each other from top to bottom, so that the die core 32 can be fixed in the die core. A first mounting plate 21 is arranged at the rear side of the lower die 2, a first air cylinder 22 is fixedly arranged on the first mounting plate 21 as a stripping mechanism, a stripper plate 221 is connected on a first piston of the first air cylinder 22, four stripping rods 222 which extend forwards are arranged on the stripper plate 221, four through grooves 311 which penetrate through the front and rear side walls of the die core seat 3 are arranged on the inner side wall of the die core hole 31 along the circumference at intervals, the four through grooves 311 are aligned with the bottom of a pipe fitting sleeved on the die core 32, the four through grooves 311 are respectively aligned with the four stripping rods 222 one by one, the stripping rods 222 respectively extend into the corresponding through grooves 311, the four stripping rods 222 can move back and forth in the corresponding through grooves 311 under the driving of the first air cylinder 22, when the first air cylinder 22 drives the four stripping rods 222 to simultaneously move forwards in the corresponding through grooves 311, the four stripping rods 222 can simultaneously abut against the pipe fitting, the pipe is then carried forward on the mandrel 32 until the pipe is released from the mandrel 32.
A second mounting plate 23 is arranged on the front side of the lower die 2, a second cylinder 24 is fixedly arranged on the second mounting plate 23 and serves as a feeding mechanism, a second piston rod of the second cylinder 24 is provided with a material ejecting plate 241, a placing plate 25 is arranged between the second cylinder 24 and the die core base 3, the placing plate 25 is provided with an arc-shaped groove capable of placing a pipe fitting, the material ejecting plate 241 is arranged in the arc-shaped groove of the placing plate 25 and can move back and forth in the arc-shaped groove under the driving of the second cylinder 24, when the pipe fitting is placed in the arc-shaped groove, the second cylinder 24 drives the material ejecting plate 241 to move backwards towards the die core 32, and when the material ejecting plate 241 abuts against the pipe fitting, the material ejecting plate 241 drives the pipe fitting to move backwards towards the die core 32 together until the pipe fitting is sleeved on the die core 32. A photoelectric switch 242 is arranged on the second cylinder 24, the photoelectric switch 242 can detect whether the pipe fitting reaches a punching station on the mold core 32, and the photoelectric switch 242 is electrically connected with the hydraulic machine.
A punch holder is fixed to each of the lower dies 2 located on the left and right sides of the die core 32, and the punch holder includes: a box body 4, a vertical plate 41 which can slide left and right in the box body 4 is arranged in the box body 4, a first punch 42 is fixedly arranged on one side wall of the vertical plate 41 facing to the mold core 32, the first punch 42 extends out of the box body 4 towards the mold core 32, four blind holes are also arranged on the side wall, a spring 43 is respectively arranged in each blind hole, one end of the spring 43 extends into the blind hole, the other end of the spring 43 is abutted against the box body 4, two push rods 44 which are positioned at the same horizontal plane position are fixedly arranged on the other side wall of the vertical plate 41, the push rods 44 extend out of the box body 4 towards the opposite direction of the mold core 32, a guide inclined plane is arranged on the end of each push rod 44 extending out of the box body 4, a fixed seat 5 is respectively arranged on the left side and the right side of the lower mold 2, a downward threaded hole is arranged at the top of the fixed seat, a guide post 52 is provided on each of the left and right sides of the lower mold 2.
A second punch 11 and two positioning pins 12 are arranged downwards on the upper die 1, the second punch 11 is aligned with the first punched hole 321, the cross-sectional shape of the second punch 11 is the same as that of the first punched hole 321, and after the second punch 11 is matched with the first punched hole 321 to punch a pipe, residues punched from the pipe fall outwards through the first punched hole 321. The two positioning pins 12 are respectively aligned with the two positioning holes 34 on the mold core base 3, the upper mold 1 positioned at the left side and the right side of the second punch 11 is respectively provided with a push plate 13 with an inclined surface downwards, the inclined surface of the push plate 13 is abutted against the guide inclined surfaces of the two push rods 44 positioned at the same side with the push plate 13, the guide inclined surfaces on the push rods 44 can slide along the inclined surfaces on the push plate 13, when the push plate 13 moves downwards, the push plate 13 can push the push rods 44 by extruding the guide inclined surfaces on the push rods 44, and the push rods 44 can drive the vertical plate 41 and the first punch 42 to move towards the mold core 32 by overcoming the elasticity of the; when the push plate 13 moves upwards, the extrusion force of the push plate 13 on the push rod 44 is gradually reduced, and the vertical plate 41 drives the first punch 42 and the push rod 44 to return to the opposite direction of the mold core 32 under the action of the elastic force of the spring 43. The left side and the right side of the upper die 1 are respectively provided with the guide sleeves 14, the two guide sleeves 14 are respectively sleeved on the two guide posts 52 on the lower die 2, the upper die 1 can move up and down along the guide posts 52, and therefore the upper die 1 is not easy to shift in the up-and-down movement process. A die handle 15 which can be connected with a hydraulic machine is arranged at the top of the upper die 1.
The working process of the three-way punching die for the round pipe with the structure is as follows: firstly, fixing an upper die 1 and a lower die 2 on a hydraulic press, adjusting the distance between a limit screw 22 and the upper die 1 according to the outer diameter of a pipe to be processed, so as to control the downward movement stroke of the upper die 1, placing the pipe to be processed in an arc-shaped groove of a mounting plate 25, starting a second cylinder 24, driving a material ejecting plate 241 by the second cylinder 24 to push the pipe to move towards a die core 32 until the pipe is sleeved on the die core 32, and at the moment, always ejecting the material ejecting plate 241 against the pipe. When the photoelectric switch 242 detects that the pipe is pushed to the punching station on the mold core 32, the photoelectric switch 242 sends an electric signal to the hydraulic machine, the hydraulic machine drives the upper mold 1 to move downwards along the guide post 52, the second punch 11, the positioning pin 12 and the push plate 13 on the upper mold 1 move towards the lower mold 2 together, in the process, the positioning pin 12 extends into the positioning hole 34, the positioning pin 12 is matched with the positioning hole 34 to further limit the movement direction of the upper mold 1, the second punch 11 moves downwards to abut against the upper side wall of the pipe to be processed, meanwhile, the two push plates 13 push the two vertical plates 41 by extruding the corresponding push rods 44, so that the two vertical plates 41 drive the corresponding first punches 42 to move towards the mold core 32 respectively against the elasticity of the corresponding springs 42, the two first punches 42 and the second punch 11 abut against the left and right side walls of the pipe to be processed simultaneously, the upper die 1 continues to move downwards, at this time, the two first punches 42 and the second punch 11 simultaneously punch three side walls of the pipe to be processed, residues punched by the two first punches 42 fall outwards from the rectangular blanking hole 323, and residues punched by the second punch 11 fall outwards from the first punched hole 321. After punching, the hydraulic press drives the upper die 1 to move upwards along the guide post 52, the second punch 11, the positioning pin 12 and the push plate 13 move upwards together to reset, meanwhile, the extrusion force of the push plate 13 on the push rod 44 is gradually reduced, and the vertical plate 41 drives the first punch 42 and the push rod 44 to reset in the opposite direction of the die core 32 under the action of the elastic force of the spring 42. After the first punch 42 and the second punch 11 are reset, the second cylinder 24 drives the ejector plate 241 to move in the opposite direction of the die core 32 to leave the pipe, then the first cylinder 22 drives the material returning rods 222 to move forward in the through groove 311, and the four material returning rods 222 abut against the end of the pipe to push the pipe forward away from the die core 32, so that automatic material discharging is realized. The three-way punching die for the round pipe is simple in structure and convenient to operate, not only is automatic work realized, but also the punching efficiency and the machining precision are greatly improved.
Claims (10)
1. A three-dimensional cut-out press for on pipe, including last mould, lower mould, its characterized in that: a die core seat is arranged on the lower die, a die core hole is formed in the die core seat, a cylindrical die core is fixedly arranged in the die core hole in a penetrating manner, the front end of the die core extends forwards out of the die core seat, a first punching hole is vertically arranged on the upper side wall of the die core, a second punching hole transversely penetrating through the left side wall and the right side wall of the die core is arranged on the die core, and the position of the first punching hole and the position of the second punching hole on the die core are punching stations on the die core; a demoulding mechanism is arranged at the rear part of the lower die, a stripper plate is arranged on the demoulding mechanism, a plurality of material returning rods which extend forwards are arranged on the stripper plate, a plurality of through grooves which penetrate through the front side wall and the rear side wall of the die core seat are arranged on the inner side wall of the die core hole along the circumference, the through grooves are aligned with the end parts of the pipe fittings sleeved on the die core, the through grooves on the die core hole are respectively aligned with the material returning rods one by one, the material returning rods respectively extend into the corresponding through grooves, the material returning rods can move back and forth in the through grooves under the driving of the material returning mechanism, a feeding mechanism is arranged in front of the lower die, a photoelectric switch which can detect whether the pipe fittings reach the punching stations on the die core is arranged on the feeding mechanism, the photoelectric switch is electrically connected with a hydraulic press, a mounting plate is arranged between the feeding mechanism and the die core seat, arc grooves which can place the pipe fittings are arranged, the punch platform includes: the box body is internally provided with a vertical plate capable of sliding left and right in the box body, a first punch and a spring are arranged on one side wall of the vertical plate facing the mold core, the first punch extends out of the box body towards the mold core, the first punch is aligned with the second punch, the cross section of the first punch is the same as that of the second punch, the spring abuts against the box body, the other side wall of the vertical plate is provided with a push rod, the push rod extends out of the box body towards the opposite direction of the mold core, and a guide inclined plane is arranged at the end part of the push rod extending out of the box body; and a second punch aligned with the first punch is downwards arranged on the upper die, the section shape of the second punch is the same as that of the first punch, a push plate with an inclined plane is downwards arranged on the upper die positioned at the left side and the right side of the second punch respectively, and the inclined plane of the push plate abuts against the guide inclined plane of the push rod positioned at the same side of the push plate.
2. The three-way punch die for round tubes of claim 1, wherein: the demolding mechanism is characterized in that the demolding mechanism is a first air cylinder, a first mounting plate is arranged on the rear side of the lower mold, the first air cylinder is fixed on the first mounting plate, the stripper plate is connected with a first piston on the first air cylinder, four stripper rods extending forwards are arranged on the stripper plate, four through grooves are formed in the inner side wall of the mold core hole along the circumference, and the four stripper rods extend into the four through grooves respectively.
3. The three-way punch die for round tubes of claim 2, wherein: the feeding mechanism is a second cylinder, a second mounting plate is arranged on the front side of the lower die, the second cylinder is fixed on the second mounting plate, a second piston rod of the second cylinder is provided with a material ejecting plate, the material ejecting plate is located in the arc-shaped groove of the placing plate and can move back and forth in the arc-shaped groove under the driving of the second cylinder, and the photoelectric switch is arranged on the second cylinder.
4. A three-way punching die for round tubes according to claim 1, 2 or 3, wherein: the front end part of the mold core is provided with a conical guide part.
5. A three-way punching die for round tubes according to claim 1, 2 or 3, wherein: the first punched hole longitudinally penetrates through the upper side wall and the lower side wall of the mold core, and a rectangular blanking hole which is communicated with the second punched hole and longitudinally penetrates through the upper side wall and the lower side wall of the mold core is formed in the mold core.
6. A three-way punching die for round tubes according to claim 1, 2 or 3, wherein: the connecting structure between the mold core and the mold core seat is as follows: when the mold core is arranged in the mold core seat in a penetrating manner, the first through hole on the mold core seat is aligned with the second through hole on the mold core, and the cylindrical pin sequentially extends into the first through hole and the second through hole which are aligned with each other, so that the mold core is fixed in the mold core seat; the top of the mold core seat is also provided with two positioning holes, the upper mold is provided with two positioning pins downwards, and the two positioning holes are respectively aligned with the two positioning pins one by one.
7. A three-way punching die for round tubes according to claim 1, 2 or 3, wherein: four blind holes are formed in one side wall, facing the mold core, of the vertical plate, a spring is placed in each blind hole, one end of each spring extends into each blind hole, and the other end of each spring abuts against the box body; two push rods in the same horizontal position are fixedly arranged on the other side wall of the vertical plate.
8. A three-way punching die for round tubes according to claim 1, 2 or 3, wherein: the left side and the right side of the upper die are respectively provided with a guide sleeve, the left side and the right side of the lower die are respectively provided with a guide column, and the two guide sleeves on the upper die are respectively sleeved on the two guide columns on the lower die.
9. A three-way punching die for round tubes according to claim 1, 2 or 3, wherein: the left side and the right side of the lower die are respectively provided with a fixed seat, the top of each fixed seat is provided with a downward threaded hole, and a limit screw is connected in each threaded hole.
10. A three-way punching die for round tubes according to claim 1, 2 or 3, wherein: and the top of the upper die is provided with a die handle which can be connected with a hydraulic press.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922058296.3U CN211330942U (en) | 2019-11-26 | 2019-11-26 | Three-way punching die for round pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922058296.3U CN211330942U (en) | 2019-11-26 | 2019-11-26 | Three-way punching die for round pipe |
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| Publication Number | Publication Date |
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| CN211330942U true CN211330942U (en) | 2020-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922058296.3U Active CN211330942U (en) | 2019-11-26 | 2019-11-26 | Three-way punching die for round pipe |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112246965A (en) * | 2020-09-24 | 2021-01-22 | 贵州振华华联电子有限公司 | Automatic punching machine for radial hole of thin-wall annular part |
| CN112642921A (en) * | 2020-08-31 | 2021-04-13 | 台州市路桥先创自动化设备有限公司 | Straight pipe four-direction multi-hole punching machine |
| CN113020413A (en) * | 2021-02-25 | 2021-06-25 | 温州联智自动化科技有限公司 | Automatic material feeding and taking device for punching edge hole of oxygen sensor protective sleeve |
| CN113145732A (en) * | 2021-01-27 | 2021-07-23 | 宁波康迪普瑞模具技术有限公司 | Pipe fitting lateral wall notching die |
| CN113458241A (en) * | 2021-05-15 | 2021-10-01 | 黑龙江省科学院智能制造研究所 | A stamping equipment for aluminum alloy ex-trusions |
-
2019
- 2019-11-26 CN CN201922058296.3U patent/CN211330942U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112642921A (en) * | 2020-08-31 | 2021-04-13 | 台州市路桥先创自动化设备有限公司 | Straight pipe four-direction multi-hole punching machine |
| CN112246965A (en) * | 2020-09-24 | 2021-01-22 | 贵州振华华联电子有限公司 | Automatic punching machine for radial hole of thin-wall annular part |
| CN113145732A (en) * | 2021-01-27 | 2021-07-23 | 宁波康迪普瑞模具技术有限公司 | Pipe fitting lateral wall notching die |
| CN113020413A (en) * | 2021-02-25 | 2021-06-25 | 温州联智自动化科技有限公司 | Automatic material feeding and taking device for punching edge hole of oxygen sensor protective sleeve |
| CN113458241A (en) * | 2021-05-15 | 2021-10-01 | 黑龙江省科学院智能制造研究所 | A stamping equipment for aluminum alloy ex-trusions |
| CN113458241B (en) * | 2021-05-15 | 2022-08-26 | 黑龙江省科学院智能制造研究所 | A stamping equipment for aluminum alloy ex-trusions |
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