CN209773280U - Stamping system with automatic feeding function - Google Patents
Stamping system with automatic feeding function Download PDFInfo
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- CN209773280U CN209773280U CN201920401720.7U CN201920401720U CN209773280U CN 209773280 U CN209773280 U CN 209773280U CN 201920401720 U CN201920401720 U CN 201920401720U CN 209773280 U CN209773280 U CN 209773280U
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- conveyor belt
- punching
- automatic feeding
- fixing plate
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Abstract
The utility model discloses a stamping system with automatic feed function, including the punch press shell body, the inside of this punch press shell body has the punching press processing cavity, is provided with the punching press processing platform in this punching press processing cavity and is located the drift of this punching press processing platform top, set up the feed inlet with the punching press processing cavity intercommunication on one side lateral wall of punch press shell body other being provided with of punch press shell body snatchs feed mechanism and autoloading mechanism. Technical scheme more than adopting, two processes of pay-off and material loading can be gone on automatically, compare in artifical material loading, have not only accelerated the punching press beat, have improved material loading efficiency, the safety risk that probably exists when having avoided artifical material loading moreover.
Description
Technical Field
The utility model relates to a material shaping mechanical equipment technical field, concretely relates to stamping system with automatic feed function.
Background
The punch press is a stamping type press. In national production, the stamping process has the advantages of material and energy conservation, high efficiency, low technical requirement on operators and capability of making products which cannot be machined through various die applications compared with the traditional machining, so that the stamping process has wider and wider application. The stamping production is mainly directed to plates. Through the mould, can make blanking, punch a hole, shaping, deep-drawing, trimming, essence towards, the plastic, riveting and extruded article etc. wide application in each field. For example, a plurality of accessories such as switch sockets, cups, cupboards, dishes, computer cases and the like can be produced by a punch through a die.
the feeding of punching press lathe includes pay-off and two processes of material loading, and the pay-off of current punching press lathe all can only go on through the manual work with two processes of material loading, and not only feeding efficiency is unsatisfactory, influences the punching press beat, and the workman has great safety risk during the material loading moreover, and the problem becomes urgent of affairs more than solving.
SUMMERY OF THE UTILITY MODEL
Can only go on through the manual work for solving two processes of current punching press lathe pay-off and material loading, lead to not only that feed efficiency is unsatisfactory, influence the punching press beat, have the technical problem of great potential safety hazard moreover, the utility model provides a punching press system with automatic feed function.
The technical scheme is as follows:
The utility model provides a stamping system with automatic feed function, includes the punch press shell body, the inside of this punch press shell body has the punching press processing cavity, is provided with the punching press processing platform in this punching press processing cavity and is located the drift of this punching press processing platform top, set up the feed inlet with punching press processing cavity intercommunication on one side lateral wall of punch press shell body, its main points lie in: a grabbing and feeding mechanism and an automatic feeding mechanism are arranged beside the punch press shell, the grabbing and feeding mechanism comprises a material arrival platform, a material temporary storage platform, two material grippers and a gripper driving device for driving the two material grippers to synchronously move, the material loading temporary storage platform is positioned at the central point of the connecting line of the material arrival platform and the stamping processing platform, the distance between the material arrival platform and the material loading temporary storage platform is equal to the distance between the two material grippers, one material gripper is used for transferring the materials from the material arrival platform to the temporary loading storage platform, the other material gripper is used for transferring the material from the material loading temporary storage platform to the stamping processing platform, the automatic feeding mechanism comprises a vibrating disk, a primary conveyor belt and a secondary conveyor belt which are connected in sequence, the discharge end of the secondary conveyor belt is connected with the material arrival platform, and the transmission speed of the primary conveyor belt is smaller than that of the secondary conveyor belt.
by adopting the structure, the two processes of feeding and loading can be automatically carried out, compared with manual loading, the stamping rhythm is accelerated, the loading efficiency is improved, and the possible safety risk in manual loading is avoided; due to the design of the two material grippers, when one material gripper transfers materials from the material arrival platform to the material loading temporary storage platform, the other material gripper can transfer the materials on the material loading temporary storage platform to the stamping processing platform, so that the processing beat gap is shortened, and the material loading efficiency is further improved; the arrangement of different transmission speeds of the first-level conveyor belt and the second-level conveyor belt aims to ensure that a reasonable interval is reserved between adjacent materials so that the material gripper can accurately grip the materials.
preferably, the method comprises the following steps: the thickness detection sensor is arranged on the secondary conveyor belt and used for detecting the thickness of the material and a material pushing assembly used for pushing the material with unqualified thickness down the secondary conveyor belt, and the thickness detection sensor is positioned on one side, close to the feeding end of the secondary conveyor belt, of the material pushing assembly. By adopting the structure, unqualified materials can be removed, and the phenomenon that a punching machine tool processes unqualified products is avoided.
Preferably, the method comprises the following steps: the material pushing assembly comprises a material pushing cylinder arranged on one side of the secondary conveyor belt and a material pushing block arranged on a piston rod of the material pushing cylinder, and the material pushing block can move along the width direction of the upper surface of the secondary conveyor belt under the driving of the piston rod of the material pushing cylinder. By adopting the structure, the device is stable, reliable and easy to realize.
preferably, the method comprises the following steps: and needle type cylinders are arranged on both sides of the feeding end of the secondary conveyor belt. By adopting the structure, the quantity and the distance of materials on the secondary conveyor belt can be limited by the mutual matching of the two needle type cylinders.
Preferably, the method comprises the following steps: and limiting guide plates are arranged on two sides of the first-stage conveying belt and the second-stage conveying belt. By adopting the structure, the materials are stably conveyed along the length directions of the first-level conveyor belt and the second-level conveyor belt.
Preferably, the method comprises the following steps: the material tongs all include finger cylinder and two can be close to each other or the centre gripping finger of keeping away from under finger cylinder drives, tongs drive arrangement includes tongs fixed plate, lateral displacement device, installation fixed plate and lift displacement device, two the finger cylinder is all installed on the tongs fixed plate of vertical setting, the tongs fixed plate is installed on the lateral displacement device to lateral shifting under the drive of lateral displacement device, the lateral displacement device is installed on the installation fixed plate of vertical setting, the installation fixed plate is installed on the lift displacement device to can go up and down under the drive of lift displacement device. Structure more than adopting can control two finger cylinders reliably and stably and snatch the material to transport the material.
Preferably, the method comprises the following steps: the lifting displacement device comprises a lifting sliding frame, a lifting sliding block capable of lifting along the lifting sliding frame and a lifting driving cylinder which is arranged on the lifting sliding frame and can drive the lifting sliding block to lift, and the mounting fixing plate is fixed on the side wall of the lifting sliding block along the vertical direction. By adopting the structure, the structure is stable and reliable.
Preferably, the method comprises the following steps: the transverse displacement device comprises a linear module transversely arranged on the mounting fixing plate and linear guide rails respectively arranged on the upper side and the lower side of the linear module, and the gripper fixing plate is mounted on the linear module and the two linear guide rails and can transversely move along the two linear guide rails under the driving of the linear module. Structure more than adopting can drive tongs fixed plate translation reliably and stably.
Preferably, the method comprises the following steps: be provided with the jet-propelled belt cleaning device who is used for wasing two material tongs on the tongs fixed plate, this jet-propelled belt cleaning device includes the lift guide of an at least vertical setting, can follow the air cock mounting panel that lift guide goes up and down, is used for driving the air cock position that the air cock mounting panel goes up and down and drives actuating cylinder and install the air nozzle on the air cock mounting panel, the gas outlet of air nozzle is towards two material tongs. By adopting the structure, dust on the material gripper and the stamping platform can be rapidly and efficiently cleaned.
Compared with the prior art, the beneficial effects of the utility model are that:
Technical scheme's stamping system with automatic feed function more than adopting, novel structure, design benefit, pay-off and two processes of material loading can go on automatically, compare in artifical material loading, have not only accelerated the punching press beat, have improved material loading efficiency, the safety risk that probably exists when having avoided artifical material loading moreover.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of an automatic feeding mechanism;
FIG. 3 is a schematic view showing the matching relationship between the grabbing and feeding mechanism and the stamping platform and the punch;
FIG. 4 is a schematic structural view of a grabbing and feeding mechanism;
FIG. 5 is a schematic view showing an assembled relationship between the lateral displacement device and the elevation displacement device;
Fig. 6 is a schematic structural diagram of the elevation displacement apparatus.
Detailed Description
the present invention will be further described with reference to the following examples and accompanying drawings.
As shown in fig. 1 and 3, a punching system with an automatic feeding function includes a punch press outer shell 9, a punching processing chamber is provided inside the punch press outer shell 9, a punching processing platform 9a and a punch 9b located above the punching processing platform 9a are provided in the punching processing chamber, and a feed inlet 9c communicated with the punching processing chamber is provided on a side wall of the punch press outer shell 9. A grabbing and feeding mechanism and an automatic feeding mechanism are arranged beside the outer shell 9 of the punch press.
Referring to fig. 1 and 2, the grabbing and feeding mechanism comprises a material arrival platform 1, the automatic feeding mechanism comprises a vibration disc 11, a primary conveyor belt 12 and a secondary conveyor belt 13 which are connected in sequence, a discharge end of the secondary conveyor belt 13 is connected with the material arrival platform 1, and the transmission speed of the primary conveyor belt 12 is lower than that of the secondary conveyor belt 13. The vibration disk 11 continuously outputs the materials A, the materials A are firstly and tightly conveyed on the primary conveyor belt 12, and because the speed of the conveying speed of the secondary conveyor belt 13 is higher than that of the primary conveyor belt 12, the materials A are spaced on the secondary conveyor belt 13. Further, the vibration plate 11 and the primary conveyor belt 12 are both mounted on the vibration plate mounting table 17.
Referring to fig. 2, a thickness detection sensor 18 for detecting the thickness of the material a and a pushing assembly 14 for pushing the material a with an unqualified thickness down the secondary conveyor belt 13 are arranged on the secondary conveyor belt 13, and the thickness detection sensor 18 is located on one side of the pushing assembly 14 close to the feeding end of the secondary conveyor belt 13. The pushing assembly 14 comprises a pushing cylinder 14a installed on one side of the secondary conveyor belt 13 and a pushing block 14b installed on a piston rod of the pushing cylinder 14a, and the pushing block 14b can move along the width direction of the upper surface of the secondary conveyor belt 13 under the driving of the piston rod of the pushing cylinder 14 a. When the thickness detection sensor 18 detects that the thickness of the material A is unqualified, the material pushing cylinder 14a is started, and the material pushing block 14b can push the unqualified material A down the secondary conveyor belt 13, so that the thickness of the material A reaching the platform 1 meets the requirement.
Referring to fig. 2, needle cylinders 15 are installed on both sides of the feeding end of the secondary conveyor 13 to control the feeding of the secondary conveyor 13. In addition, the two sides of the first-level conveyor belt 12 and the second-level conveyor belt 13 are respectively provided with a limiting guide plate 16, so that the materials A on the limiting guide plates can be stably guided, and the deviation of the track of the materials A is prevented.
Referring to fig. 1 and 3, the grabbing feeding mechanism includes a feeding mechanism mounting platform 10 disposed beside an outer shell 9 of the punch press, a material arrival platform 1, a material temporary storage platform 2 and a lifting and displacing device 7 are disposed on the feeding mechanism mounting platform 10, and the secondary conveyor 13 is also mounted on the feeding mechanism mounting platform 10. Wherein, the material arrives platform 1 and material loading temporary storage platform 2 and sets up side by side, and the top surface flushes, lift displacement device 7 is located the material and arrives platform 1 and material loading temporary storage platform 2 one side. The lifting and shifting device 7 is provided with a mounting and fixing plate 6, the mounting and fixing plate 6 is provided with a transverse shifting device 5, the transverse shifting device 5 is provided with a hand grip fixing plate 4, and the hand grip fixing plate 4 is provided with two material hand grips 3 which are arranged side by side along the horizontal direction.
Referring to fig. 3 and 4, two material grippers 3 are located above the material arrival platform 1 and the temporary material loading platform 2, and the distance between the material arrival platform 1 and the temporary material loading platform 2 is equal to the distance between the two material grippers 3. Specifically speaking, material tongs 3 all include finger cylinder 3a and two centre gripping fingers 3b that can be close to each other or keep away from under the drive of finger cylinder 3a, two finger cylinder 3a all installs on the tongs fixed plate 4 of vertical setting, tongs fixed plate 4 is installed on horizontal displacement device 5 to can be at horizontal displacement device 5's drive down lateral shifting, horizontal displacement device 5 is installed on vertical installation fixed plate 6 that sets up, installation fixed plate 6 is installed on lift displacement device 7 to can go up and down under the drive of lift displacement device 7, thereby can drive installation fixed plate 6 lift more reliably.
Referring to fig. 4-6, the elevation displacement device 7 includes an elevation carriage 7a, an elevation slider 7b capable of elevating along the elevation carriage 7a, and an elevation driving cylinder 7c installed on the elevation carriage 7a and capable of driving the elevation slider 7b to elevate, and the installation fixing plate 6 is fixed on a side wall of the elevation slider 7b along a vertical direction.
Referring to fig. 5 and 6, the lifting carriage 7a includes two lifting guide rods 7a1 vertically arranged side by side, an upper support plate 7a2 fixedly connected to upper ends of the two lifting guide rods 7a1, a lower support plate 7a3 fixedly connected to lower ends of the two lifting guide rods 7a1, and a cylinder mounting plate 7a4 fixedly connected to the two lifting guide rods 7a1, the cylinder mounting plate 7a4 is located above the lower support plate 7a3 and is adjacent to the lower support plate 7a3, the lifting driving cylinder 7c is mounted on the cylinder mounting plate 7a4, and two ends of the lifting slider 7b are respectively sleeved on the corresponding lifting guide rods 7a1 and can lift between the upper support plate 7a2 and the cylinder mounting plate 7a4 along the two lifting guide rods 7a 1.
Referring to fig. 4 and 5, the transverse displacement device 5 includes a linear module 5a transversely disposed on the mounting fixing plate 6 and linear guide rails 5b respectively disposed on the upper and lower sides of the linear module 5a, and the gripper fixing plate 4 is mounted on the linear module 5a and the two linear guide rails 5b and can be driven by the linear module 5a to transversely move along the two linear guide rails 5 b.
The upper edge of the mounting fixing plate 6 is provided with a limiting baffle 6a extending towards the direction of the gripper fixing plate 4 along the horizontal direction, the outer edge of the limiting baffle 6a is bent downwards to form a limiting side baffle part 6b, and the upper edge of the gripper fixing plate 4 is positioned on the inner side of the limiting side baffle part 6b, so that the mounting and displacement of the gripper fixing plate 4 are more stable and reliable, and the occurrence of shaking is avoided.
Referring to fig. 4, an air injection cleaning device 8 for cleaning the two material grippers 3 is disposed on the gripper fixing plate 4, the air injection cleaning device 8 includes at least one vertically disposed lifting guide rail 8a, an air nozzle mounting plate 8b capable of lifting along the lifting guide rail 8a, an air nozzle position driving cylinder 8c for driving the air nozzle mounting plate 8b to lift, and an air nozzle 8d mounted on the air nozzle mounting plate 8b, and an air outlet of the air nozzle 8d faces the two material grippers 3.
The air nozzle mounting plate 8b comprises a bottom plate part 8b1 mounted on the lifting guide rail 8a and an extension part 8b2 mounted on the bottom plate part 8b1, and the air nozzle 8d is mounted at one end of the extension part 8b2 far away from the material hand grip 3. The design position is reasonable, and the stamping platform 9a and the two material grippers 3 can be efficiently cleaned simultaneously.
Referring to fig. 4, two material guide strips 1a facing each other and a material baffle 1b located at the same end of the two material guide strips 1a are installed on the top surface of the material arrival platform 1, a material limiting groove 1b1 in a V-shaped structure is formed in one side of the material baffle 1b close to the two material guide strips 1a, and the two material guide strips 1a are located on two sides of the material limiting groove 1b1 respectively. The material A can be accurately positioned so as to facilitate the reliable grabbing of the material gripper 3. And the outer edges of the two material guide strips 1a far away from one end of the material baffle plate 1b and close to each other are respectively chamfered with an oblique angle 1a 1. The position of the fine adjustment material A can be corrected, and the material A is guided and positioned.
The top surface of material loading platform 2 is installed material locating plate 2a, rotationally installs the location card strip 2b of arranging along circumference at the upper surface of this material locating plate 2a, and each location card strip 2b all can slide towards the direction that is close to or keeps away from material locating plate 2a central point position. The material A can be accurately positioned so as to facilitate the reliable grabbing of the material gripper 3.
The working principle of the utility model is as follows:
The vibrating disk 11 continuously outputs the materials A in a vibrating mode, the materials A are firstly and closely conveyed on the first-level conveying belt 12 and then reach the second-level conveying belt 13, the intervals among the materials A are expanded so as to be convenient for a follow-up material gripper 3 to grasp, when the materials A are on the second-level conveying belt 13, the materials A firstly pass below the thickness detection sensor 18 and are detected by the thickness detection sensor 18, when the thickness detection sensor 18 detects that the thickness of the materials A is unqualified, the material pushing cylinder 14a is started, the material pushing block 14b can push the unqualified materials A down the second-level conveying belt 13, when the thickness detection sensor 18 detects that the thickness of the materials A is qualified, the material pushing cylinder 14a is not started, the material pushing block 14b can reach the position where the materials reach the material baffle 1b on the platform 1, and waits for the.
On the other side, the two finger cylinders 3a make the clamping fingers 3b far away from each other, namely, the two material grippers 3 are in an open state, then the lifting driving cylinder 7c is started to make the two material grippers 3 be positioned at the highest position, then the linear module 5a is started to make the two material grippers 3 be positioned right above the material arrival platform 1 and the material loading temporary storage platform 2 respectively, the lifting driving cylinder 7c is started after the two material grippers 3 are in place to make the two material grippers 3 descend to the top surfaces of the material arrival platform 1 and the material loading temporary storage platform 2 respectively, the two finger cylinders 3a are started after the two material grippers are in place to make the clamping fingers 3b approach each other, namely, the two material grippers 3 are in a clamping state to grip the material A on the material arrival platform 1 and the material loading temporary storage platform 2 respectively, after the gripping is finished, the lifting driving cylinder 7c is started again to make the two material, then the straight line module 5a starts, makes a material tongs 3 with material A from the material arrival platform 1 on the material temporary storage platform 2 of transporting, simultaneously, another material tongs 3 with the material A on the material temporary storage platform 2 transport to the punching press processing platform 9a, the drift 9b carries out punching press processing to material A after reaching the target position to this is reciprocal.
Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and the scope of the present invention.
Claims (9)
1. The utility model provides a stamping system with automatic feed function, includes punch press shell body (9), the inside of this punch press shell body (9) has the punching press processing cavity, is provided with punching press processing platform (9a) and is located drift (9b) of this punching press processing platform (9a) top in this punching press processing cavity, offer feed inlet (9c) with punching press processing cavity intercommunication on one side lateral wall of punch press shell body (9), its characterized in that: a grabbing feeding mechanism and an automatic feeding mechanism are arranged beside the punch press shell (9), the grabbing feeding mechanism comprises a material arrival platform (1), a material loading temporary storage platform (2), two material grippers (3) and a gripper driving device for driving the two material grippers (3) to move synchronously, the material loading temporary storage platform (2) is positioned at the central point of the connecting line of the material arrival platform (1) and the punching processing platform (9a), the distance between the material arrival platform (1) and the material loading temporary storage platform (2) is equal to the distance between the two material grippers (3), one material gripper (3) is used for transferring the material (A) from the material arrival platform (1) to the material loading temporary storage platform (2), the other material gripper (3) is used for transferring the material (A) from the material loading temporary storage platform (2) to the punching processing platform (9a), automatic feeding mechanism is including vibration dish (11), one-level conveyer belt (12) and second grade conveyer belt (13) that connect gradually, the discharge end and the material of second grade conveyer belt (13) reach platform (1) and link to each other, the transmission speed of one-level conveyer belt (12) is less than the transmission speed of second grade conveyer belt (13).
2. The punching system with automatic feeding function according to claim 1, wherein: the thickness detection sensor (18) used for detecting the thickness of the material (A) and the material pushing assembly (14) used for pushing the material (A) with unqualified thickness down the secondary conveyor belt (13) are arranged on the secondary conveyor belt (13), and the thickness detection sensor (18) is positioned on one side, close to the feeding end of the secondary conveyor belt (13), of the material pushing assembly (14).
3. The punching system with automatic feeding function according to claim 2, wherein: the pushing assembly (14) comprises a pushing cylinder (14a) arranged on one side of the secondary conveyor belt (13) and a pushing block (14b) arranged on a piston rod of the pushing cylinder (14a), and the pushing block (14b) can move along the width direction of the upper surface of the secondary conveyor belt (13) under the driving of the piston rod of the pushing cylinder (14 a).
4. The punching system with automatic feeding function according to claim 1, wherein: and needle type cylinders (15) are arranged on both sides of the feeding end of the secondary conveyor belt (13).
5. The punching system with automatic feeding function according to claim 1, wherein: and limiting guide plates (16) are arranged on two sides of the primary conveyor belt (12) and the secondary conveyor belt (13).
6. The punching system with automatic feeding function according to claim 1, wherein: the material gripper (3) comprises a finger cylinder (3a) and two clamping fingers (3b) which can be close to or far away from each other under the driving of the finger cylinder (3a), the gripper driving device comprises a gripper fixing plate (4), a transverse displacement device (5), an installation fixing plate (6) and a lifting displacement device (7), the finger cylinders (3a) are installed on the gripper fixing plate (4) which is vertically arranged, the gripper fixing plate (4) is installed on the transverse displacement device (5) and can move transversely under the driving of the transverse displacement device (5), the transverse displacement device (5) is installed on the installation fixing plate (6) which is vertically arranged, and the installation fixing plate (6) is installed on the lifting displacement device (7) and can lift under the driving of the lifting displacement device (7).
7. The punching system with automatic feeding function according to claim 6, wherein: the lifting displacement device (7) comprises a lifting sliding frame (7a), a lifting sliding block (7b) capable of lifting along the lifting sliding frame (7a) and a lifting driving cylinder (7c) which is installed on the lifting sliding frame (7a) and can drive the lifting sliding block (7b) to lift, and the installation fixing plate (6) is fixed on the side wall of the lifting sliding block (7b) along the vertical direction.
8. the punching system with automatic feeding function according to claim 6, wherein: the transverse displacement device (5) comprises a linear module (5a) transversely arranged on an installation fixing plate (6) and linear guide rails (5b) respectively arranged on the upper side and the lower side of the linear module (5a), and the gripper fixing plate (4) is arranged on the linear module (5a) and the two linear guide rails (5b) and can transversely move along the two linear guide rails (5b) under the driving of the linear module (5 a).
9. The punching system with automatic feeding function according to claim 6, wherein: be provided with jet-propelled belt cleaning device (8) that are used for wasing two material tongs (3) on tongs fixed plate (4), this jet-propelled belt cleaning device (8) include lift guide (8a) of an at least vertical setting, can follow air cock mounting panel (8b) that lift guide (8a) goes up and down, be used for driving air cock position that air cock mounting panel (8b) goes up and down and drive cylinder (8c) and install air nozzle (8d) on air cock mounting panel (8b), the gas outlet of air nozzle (8d) is towards two material tongs (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920401720.7U CN209773280U (en) | 2019-03-27 | 2019-03-27 | Stamping system with automatic feeding function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920401720.7U CN209773280U (en) | 2019-03-27 | 2019-03-27 | Stamping system with automatic feeding function |
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| Publication Number | Publication Date |
|---|---|
| CN209773280U true CN209773280U (en) | 2019-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920401720.7U Expired - Fee Related CN209773280U (en) | 2019-03-27 | 2019-03-27 | Stamping system with automatic feeding function |
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| CN (1) | CN209773280U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114472677A (en) * | 2022-04-15 | 2022-05-13 | 山东盛赢电力设备有限公司 | Transformer shell cutting device |
-
2019
- 2019-03-27 CN CN201920401720.7U patent/CN209773280U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114472677A (en) * | 2022-04-15 | 2022-05-13 | 山东盛赢电力设备有限公司 | Transformer shell cutting device |
| CN114472677B (en) * | 2022-04-15 | 2022-06-10 | 山东盛赢电力设备有限公司 | Transformer shell cutting device |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191213 Termination date: 20210327 |
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| CF01 | Termination of patent right due to non-payment of annual fee |