CN115178666A - Stainless steel plate stamping device - Google Patents
Stainless steel plate stamping device Download PDFInfo
- Publication number
- CN115178666A CN115178666A CN202211112900.6A CN202211112900A CN115178666A CN 115178666 A CN115178666 A CN 115178666A CN 202211112900 A CN202211112900 A CN 202211112900A CN 115178666 A CN115178666 A CN 115178666A
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- template
- stainless steel
- magnet
- steel plate
- die
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention relates to the technical field of plate stamping, and discloses a stainless steel plate stamping device which comprises a template A, an external circulating cooling system, a positioning template below the template A, positioning rods uniformly distributed at the bottom end of the positioning template, and a template B below the positioning template, wherein a male die is fixedly connected with the center of the bottom end of the template A, a female die is arranged at the center of the template B, a stainless steel plate is placed on the template B, and a dynamic base is movably sleeved in the female die. According to the invention, the dynamic base floats up and down under the repulsive force of the electromagnet and the pressure of the male die, so that when the stainless steel plate is subjected to plastic deformation under the pressure of the male die, the bottom end of the stainless steel plate can be in contact with the dynamic base, the stainless steel plate can be cooled by cooling air flow in the male die and can also be cooled by cooling air flow in the dynamic base, and the problem that the bottom of the stainless steel plate cannot be synchronously cooled in the process of pressure forming is avoided.
Description
Technical Field
The invention relates to the technical field of plate stamping, in particular to a stainless steel plate stamping device.
Background
The stainless steel plate is punched by applying external force to the stainless steel plate under the control of a PLC (programmable logic controller) by a press and a die, so that the stainless steel plate is subjected to plastic deformation or separation, and a workpiece with a required shape and size is obtained.
When the stainless steel plate is punched, a punch on a die extrudes the fixed stainless steel plate to enable the stainless steel plate to generate plastic deformation under the limitation of a die, in the process, the stainless steel plate generates high temperature due to deformation, the high temperature heats a release agent, stamping oil and the like, so that a heated substance of a workpiece is stuck on the die and is tightly attached to the die under the pressure of the punch, the workpiece cannot be normally demoulded in the subsequent demoulding action, at the moment, the workpiece can be taken out only by applying larger demoulding force through an additionally arranged demoulding mechanism, the stainless steel plate needs to be cleaned after being taken out, the adhered substance is cleaned, and the punching efficiency of the stainless steel plate is seriously influenced.
The existing stamping die is additionally provided with a circulating cooling system, the stainless steel plate is stamped and cooled, but the stamping process of the stainless steel plate is very short, the cooling time of cooling water (cooling gas) flowing in the cooling system to the stainless steel plate is short, the purpose of rapidly stamping and cooling the stainless steel plate cannot be met, and meanwhile, before the stainless steel plate is completely molded, the stainless steel plate is extruded by a male die, the top of the stainless steel plate can be cooled by a cooling pipeline additionally arranged in the male die, but the bottom of the stainless steel plate is in a suspended state, and timely cooling cannot be obtained.
Disclosure of Invention
The invention provides a stainless steel plate stamping device, aiming at the defects of the existing stainless steel plate stamping die in the use process in the background technology, which has the advantages that a dynamic base is always attached to the bottom end of the stainless steel plate, the dynamic base carries out real-time cooling on the stainless steel plate, an electromagnet exerts repulsion force on a magnet I to lift the magnet I, the dynamic base lifts up under the repulsion force to complete demoulding, the electromagnet exerts repulsion force on a magnet II to enable the magnet II to swing, and a stirring plate swings to enable cooling airflow to form turbulent flow.
The invention provides the following technical scheme: the utility model provides a corrosion resistant plate stamping device, includes A template, the circulative cooling system of peripheral hardware, the locating plate of A template below, the locating lever of locating plate bottom equipartition, the B template of locating plate below, the bottom center fixedly connected with terrace die of A template, the die has been seted up at the center of B template, placed corrosion resistant plate on the B template, the interior activity of die cup joints dynamic base, the stopper of fixedly connected with equipartition among the dynamic base, it has the hinge ball to articulate on the stopper, fixedly connected with shakes the pole that runs through on the hinge ball, shake the bottom fixedly connected with magnet II of pole, shake the top fixedly connected with of pole and stir the board, the diversion hole of equipartition has been seted up on the board that stirs, the bottom fixedly connected with electro-magnet of die.
Preferably, the bottom of the die plate B is provided with an input hole, one end of the input hole is communicated with the circulating cooling system, and the other end of the input hole is communicated with the bottom of the female die.
Preferably, the dynamic base includes the bearing seat that is in the top and the magnet I that is located the bearing seat below, the bottom center fixedly connected with output tube of magnet I, the hole of airing exhaust has been seted up at the center of dynamic base, the cooling chamber has been seted up at the top of bearing seat, the cooling chamber is put through with the hole of airing exhaust, the fresh air inlet of equipartition has been seted up on the dynamic base.
Preferably, the opposite magnetic poles of the electromagnet and the magnet I are the same, and the opposite magnetic poles of the magnet II and the electromagnet are the same.
Preferably, the bottom opening of the air exhaust hole is communicated with the top opening of the output pipe, one end of the output pipe is communicated with the circulating cooling system, the output pipe penetrates through the electromagnet, and the bottom of the output pipe is movably sleeved in the electromagnet.
Preferably, the bottom opening of the air inlet is communicated with the female die, and the top opening of the air inlet is communicated with the cooling cavity.
Preferably, the limiting block is located in the air inlet, the stirring plate is located in the air inlet, and the magnet II is located below the magnet I.
The invention has the following beneficial effects:
1. according to the invention, the dynamic base floats up and down under the repulsive force of the electromagnet and the pressure of the male die, so that when the stainless steel plate is subjected to plastic deformation under the pressure of the male die, the bottom end of the stainless steel plate can be in contact with the dynamic base, the stainless steel plate can be cooled by cooling air flow in the male die and can also be cooled by cooling air flow in the dynamic base, and the problem that the bottom of the stainless steel plate cannot be synchronously cooled when the stainless steel plate is pressed and formed is solved.
2. The distance between the magnet II and the electromagnet is gradually reduced by the downward pressing movement of the dynamic base under the stress, the magnet II is inclined towards one side by taking the hinged ball as the center under the repulsion force of the electromagnet, the magnetic field angle between the magnet II and the magnet I is changed, the magnetic field angle between the magnet II and the electromagnet is changed, meanwhile, the magnet II is inclined towards other directions again under the blowing force of cooling air flow, so that the stirring plate continuously swings in the air inlet hole, the cooling air flow is stirred by the stirring plate, meanwhile, the cooling air flow passes through the diversion hole with the constantly changed angle, the cooling air flow forms turbulent flow, the cooling air flow forming the turbulent flow is introduced into the cooling cavity, and the stainless steel plate is fully cooled (the cooling air flow of the turbulent flow increases the air flow contacting the inner wall of the cooling cavity in unit time, and the air flow after heat absorption is mixed with the air flow which does not absorb heat or is transposed, so that most of the air flow after heat absorption can be far away from the inner wall of the cooling cavity, and the air flow at low temperature can be close to the inner wall of the cooling cavity.
3. According to the invention, through continuous pressing of the dynamic base, the repulsive force between the magnet I and the electromagnet is continuously increased, when the punch completes stamping and forming of the stainless steel plate, the pressure is removed by the punch, at the moment, the increased repulsive force enables the magnet I to drive the dynamic base to continuously lift up, so that the dynamic base drives the formed stainless steel plate to continuously lift up, and the stainless steel plate is separated from the female die to complete the action of demoulding.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic view of the internal structure of the template B according to the present invention;
FIG. 3 is a schematic diagram of the internal structure of the dynamic base of the present invention;
FIG. 4 is a schematic diagram of a stirring plate structure according to the present invention.
In the figure: 1. a, template; 2. a male die; 3. positioning a template; 4. positioning a rod; 5. b, template; 6. stainless steel plate material; 7. a female die; 8. a load bearing seat; 9. a magnet I; 10. an input aperture; 11. an electromagnet; 12. an air exhaust hole; 13. a cooling chamber; 14. an air inlet hole; 15. a turning hole; 16. an output pipe; 17. a limiting block; 18. hinging the ball; 19. a shaking rod; 20. a magnet II; 21. a stirring plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1 to 2, a stainless steel plate stamping device comprises an a template 1 and a circulating cooling system, wherein a convex die 2 is fixedly connected to the center of the bottom end of the a template 1, a positioning template 3 is arranged below the a template 1, positioning rods 4 are uniformly distributed at the bottom end of the positioning template 3, a B template 5 is arranged below the positioning template 3, a concave die 7 is arranged at the center of the B template 5, a stainless steel plate 6 is placed on the B template 5, an input hole 10 is formed in the bottom of the B template 5, one end of the input hole 10 is communicated with the circulating cooling system, the other end of the input hole is communicated with the bottom of the concave die 7, cooling air flow can be input into the concave die 7 through the input hole 10, and subsequent cooling of the stainless steel plate 6 is completed.
Cooling pipelines can be additionally arranged in the male die 2 and the die plate B5 to be communicated with a circulating cooling system, so that cooling air flows can flow in the male die 2 and the die plate B5, and the stainless steel plate is comprehensively cooled by matching with a dynamic base.
Referring to fig. 2 to 3, a dynamic base is movably sleeved in the female die 7, the dynamic base is divided into a bearing seat 8 above and a magnet i 9 located below the bearing seat, an output pipe 16 is fixedly connected to the center of the bottom end of the magnet i 9, one end of the output pipe 16 is communicated with a circulating cooling system, an air outlet 12 is formed in the center of the dynamic base, an opening at the bottom end of the air outlet 12 is communicated with an opening at the top end of the output pipe 16, a cooling cavity 13 is formed in the top of the bearing seat 8, the cooling cavity 13 is communicated with the air outlet 12, air inlet holes 14 are uniformly formed in the dynamic base, an opening at the bottom end of the air inlet 14 is communicated with the female die 7, an opening at the top end of the air inlet 14 is communicated with the cooling cavity 13, cooling air flows into the cooling cavity 13 through the air inlet holes 14, after cooling, flows into the output pipe 16 through the air outlet holes 12, and flows back to the circulating cooling system through the output pipe 16, and subsequent cooling is performed.
Referring to fig. 2 to 3, an electromagnet 11 is fixedly connected to the bottom end of the female die 7, and the opposite end magnetic poles of the electromagnet 11 and the magnet i 9 are the same, so that after the electromagnet 11 is powered on, a repulsive force can be generated between the electromagnet 11 and the magnet i 9, the magnet i 9 can be lifted up under the repulsive force, the output tube 16 penetrates through the electromagnet 11, the bottom of the output tube 16 is movably sleeved in the electromagnet 11, and when the dynamic base moves up and down, the output tube 16 can move synchronously without affecting the movement of the dynamic base.
Referring to fig. 3 to 4, a limiting block 17 is fixedly connected in the air inlet hole 14, a hinge ball 18 is hinged on the limiting block 17, the limiting block 17 limits the hinge ball 18, the hinge ball 18 can rotate around the center of the ball, a through shaking rod 19 is fixedly connected on the hinge ball 18, a magnet ii 20 is fixedly connected at the bottom end of the shaking rod 19, the magnetic poles of the magnet ii 20 and the opposite end of the electromagnet 11 are the same, an agitating plate 21 is fixedly connected at the top end of the shaking rod 19, and uniformly distributed turning holes 15 are formed in the agitating plate 21, so that when the dynamic base is pressed down, mutual repulsion occurs between the magnet ii 20 and the electromagnet 11, mutual repulsion gradually increases along with the reduction of the distance between the magnet ii 20 and the electromagnet 11, the magnet ii 20 moves and inclines to one side under the limitation of the hinge ball 18, then, the magnet ii 20 is attracted by the repulsion of the electromagnet 11, and blown by cooling air flow, the magnet i 9 inclines to other direction, the magnet 20 continuously swings, so that the magnet 20 drives the agitating plate 21 to swing in the air inlet hole 14 through the shaking rod 19 and the hinging ball 18, the agitating plate, the air flow of the cooling plate is changed, the cooling plate 14, the air flow of the cooling plate is cooled by the air flow, and the air flow, the air flow entering the cooling plate 13, and the stainless plate is changed, and the cooling plate, and the stainless plate is cooled by the air flow forming turbulent flow, and the stainless plate, and the cooling plate.
Referring to fig. 2, the magnet ii 20 is located below the magnet i 9, and the stirring plate 21 is located in the air inlet hole 14.
The use method (working principle) of the invention is as follows:
firstly, the electromagnet 11 is electrified to enable the electromagnet 11 and the magnet I9 to be mutually exclusive, the magnet I9 is lifted to the top in the female die 7, the stainless steel plate 6 is placed on the B template 5, then, circulating cooling airflow enters the female die 7 through the input hole 10, then, the template A1 and the positioning template 3 are synchronously pressed downwards to enable the positioning rod 4 to be pressed on the stainless steel plate 6, the positioning template 3 stops pressing downwards, the template A1 continues to press downwards to enable the male die 2 to start to press on the stainless steel plate 6, the pressed part of the stainless steel plate 6 starts to be stretched and deformed and gradually penetrates into the female die 7, meanwhile, the bottom end of the stainless steel plate 6 extrudes the top end of the bearing seat 8, the bearing seat 8 is synchronously pressed downwards under extrusion, the distance between the magnet I9 and the electromagnet 11 is gradually reduced, and meanwhile, the distance between the magnet II 20 and the electromagnet 11 is gradually reduced;
then, mutual repulsion occurs between the magnet II 20 and the electromagnet 11, mutual repulsion force is gradually increased along with the reduction of the distance between the magnet II 20 and the electromagnet 11, the magnet II 20 is inclined towards one side under the restriction of the hinged ball 18 (the magnetic field angle is changed), then under the repulsion force between the magnet II 20 and the electromagnet 11, the attraction of the magnet I9 and the blowing of cooling air flow, the magnet II 20 is inclined towards other directions, the continuous swing of the magnet II 20 (the magnetic field angle is changed continuously, the stress is changed continuously) is generated, the magnet II 20 drives the stirring plate 21 to swing in the air inlet hole 14 through the swinging rod 19 and the hinged ball 18, the cooling air flow introduced into the air inlet hole 14 is influenced by the swing of the stirring plate 21, the cooling air flow passes through the diversion hole 15 with the angle changed continuously, the cooling air flow passing through the stirring plate 21 forms turbulent flow, the cooling air flow forming turbulent flow is introduced into the cooling cavity 13, and the cooling air flow cools the stainless steel plate 6 stretched and exhausted by the cooling air flow and is conveyed to a circulating cooling system through the outlet hole 12 and the outlet pipe 16;
finally, after the stainless steel plate 6 is punched, the template A1 and the positioning template 3 are gradually lifted, the positioning rod 4 is enabled to loosen the stainless steel plate 6, the convex die 2 is enabled to be gradually lifted away from the concave die 7, at the moment, the magnet I9 is enabled to push the bearing seat 8 by the repulsion force of the electromagnet 11 to the magnet I9, the stretched stainless steel plate 6 is driven to be lifted upwards, finally the stretched stainless steel plate 6 is enabled to be away from the concave die 7, the demolding is completed, and the punching of the next stainless steel plate 6 is continued.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a corrosion resistant plate stamping device, includes positioning template (3), positioning template (4), B template (5) of positioning template (3) below positioning template (3) bottom equipartition, positioning template (3) of A template (1), the circulative cooling system of peripheral hardware, its characterized in that: the bottom center fixedly connected with terrace die (2) of A template (1), die (7) have been seted up at the center of B template (5), placed corrosion resistant plate material (6) on B template (5), dynamic base has been cup jointed to die (7) internalization, stopper (17) of fixedly connected with equipartition among the dynamic base, articulated on stopper (17) have hinge ball (18), swing pole (19) that fixedly connected with runs through on hinge ball (18), the bottom fixedly connected with magnet II (20) of shaking pole (19), the top fixedly connected with of shaking pole (19) stirs board (21), the diversion hole (15) of equipartition have been seted up on stirring board (21), the bottom fixedly connected with electro-magnet (11) of die (7).
2. The stainless steel plate stamping device according to claim 1, wherein: and an input hole (10) is formed in the bottom of the template B (5), one end of the input hole (10) is communicated with a circulating cooling system, and the other end of the input hole is communicated with the bottom of the female die (7).
3. The stainless steel plate stamping device according to claim 1, wherein: dynamic base is including bearing seat (8) that are in the top and magnet I (9) that are located the bearing seat below, the bottom center fixedly connected with output tube (16) of magnet I (9), hole (12) of airing exhaust have been seted up at dynamic base's center, cooling chamber (13) have been seted up at the top of bearing seat (8), cooling chamber (13) and hole (12) switch-on of airing exhaust, set up fresh air inlet (14) of equipartition on the dynamic base.
4. A stainless steel plate stamping apparatus as claimed in claim 3, wherein: the opposite end magnetic poles of the electromagnet (11) and the magnet I (9) are the same, and the opposite end magnetic poles of the magnet II (20) and the electromagnet (11) are the same.
5. The stainless steel plate stamping device according to claim 3, wherein: the bottom opening of exhaust hole (12) and the top opening switch-on of output tube (16), the one end and the circulative cooling system switch-on of output tube (16), output tube (16) run through electro-magnet (11), the bottom activity of output tube (16) is cup jointed in electro-magnet (11).
6. The stainless steel plate stamping device according to claim 3, wherein: the bottom opening of the air inlet hole (14) is communicated with the female die (7), and the top opening of the air inlet hole (14) is communicated with the cooling cavity (13).
7. A stainless steel plate stamping apparatus as claimed in claim 3, wherein: the limiting block (17) is located in the air inlet hole (14), the stirring plate (21) is located in the air inlet hole (14), and the magnet II (20) is located below the magnet I (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211112900.6A CN115178666B (en) | 2022-09-14 | 2022-09-14 | Stainless steel plate stamping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211112900.6A CN115178666B (en) | 2022-09-14 | 2022-09-14 | Stainless steel plate stamping device |
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| Publication Number | Publication Date |
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| CN115178666A true CN115178666A (en) | 2022-10-14 |
| CN115178666B CN115178666B (en) | 2023-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211112900.6A Active CN115178666B (en) | 2022-09-14 | 2022-09-14 | Stainless steel plate stamping device |
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| CN (1) | CN115178666B (en) |
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| CN106513508A (en) * | 2016-09-23 | 2017-03-22 | 北京航空航天大学 | Titanium alloy sheet metal part cold-die hot-stamping forming tool and machining method |
| CN110193545A (en) * | 2019-05-30 | 2019-09-03 | 南京加特源热能科技有限公司 | A kind of heat dissipation liquid cooling plate and its processing method |
| CN110560573A (en) * | 2019-10-11 | 2019-12-13 | 顾丽娟 | sheet metal stamping device with good heat dissipation effect |
| CN210614986U (en) * | 2019-05-07 | 2020-05-26 | 新昌县大雄锻造有限公司 | Wheel hub forging equipment comprising cooling system |
| CN212227749U (en) * | 2020-03-06 | 2020-12-25 | 东莞市龙跃永磁科技有限公司 | Discharging cooling device of iron bar sintering furnace |
| CN215237221U (en) * | 2021-02-18 | 2021-12-21 | 杭州旺润模具制造有限公司 | Ejecting mechanism for stamping die |
-
2022
- 2022-09-14 CN CN202211112900.6A patent/CN115178666B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202087664U (en) * | 2011-05-23 | 2011-12-28 | 吴胜伟 | Hydraulic seal head die |
| CN104971978A (en) * | 2015-02-12 | 2015-10-14 | 东风襄阳旋压技术有限公司 | Thinning and drawing tool |
| CN106001232A (en) * | 2016-06-27 | 2016-10-12 | 华南理工大学 | Nickel-saving stainless steel differential temperature drawing and forming device and method |
| CN106513508A (en) * | 2016-09-23 | 2017-03-22 | 北京航空航天大学 | Titanium alloy sheet metal part cold-die hot-stamping forming tool and machining method |
| CN106345880A (en) * | 2016-12-02 | 2017-01-25 | 江麓机电集团有限公司 | Aluminum alloy thin plate high box-shaped element stretching forming process |
| CN210614986U (en) * | 2019-05-07 | 2020-05-26 | 新昌县大雄锻造有限公司 | Wheel hub forging equipment comprising cooling system |
| CN110193545A (en) * | 2019-05-30 | 2019-09-03 | 南京加特源热能科技有限公司 | A kind of heat dissipation liquid cooling plate and its processing method |
| CN110560573A (en) * | 2019-10-11 | 2019-12-13 | 顾丽娟 | sheet metal stamping device with good heat dissipation effect |
| CN212227749U (en) * | 2020-03-06 | 2020-12-25 | 东莞市龙跃永磁科技有限公司 | Discharging cooling device of iron bar sintering furnace |
| CN215237221U (en) * | 2021-02-18 | 2021-12-21 | 杭州旺润模具制造有限公司 | Ejecting mechanism for stamping die |
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| CN115178666B (en) | 2023-05-16 |
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