CN214720125U - Bending device for steel-cored aluminum strand processing - Google Patents
Bending device for steel-cored aluminum strand processing Download PDFInfo
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- CN214720125U CN214720125U CN202121034392.5U CN202121034392U CN214720125U CN 214720125 U CN214720125 U CN 214720125U CN 202121034392 U CN202121034392 U CN 202121034392U CN 214720125 U CN214720125 U CN 214720125U
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Abstract
The utility model provides a bending device for steel-cored aluminum strand wires processing. The bending device for processing the steel-cored aluminum strand comprises: the round rod bending device comprises a working box, a round rod, two bending mechanisms, a shaping mechanism and two fixing mechanisms, wherein the round rod is fixedly arranged in the working box; bending mechanism includes turning block, first arc pole, first arc pinion rack, first motor and first gear, the turning block rotates and installs on the round bar, first arc pole fixed mounting is on one side outer wall of turning block, the utility model provides a technical problem provide one kind can be to the stable fixing of steel-cored aluminum strand wires to can carry out the bending device that is used for steel-cored aluminum strand wires processing of dual multi-angle bending operation.
Description
Technical Field
The utility model belongs to the technical field of the cable is made, especially, relate to a bending device for steel-cored aluminum strand wires processing.
Background
The steel-cored aluminum strand is a reinforced conductor formed by twisting a single-layer or multi-layer aluminum strand outside a galvanized steel-cored wire, and is mainly applied to the power and transmission line industry as a cable, the aluminum strand mainly plays a role in transmitting electric energy, the steel-cored aluminum strand is mainly responsible for transmitting high-voltage and extra-high-voltage current in a transmission and transformation line, the conventional steel-cored aluminum strand is structurally characterized in that a steel core is arranged inside the steel-cored aluminum strand, and a plurality of aluminum strands are twisted on the outer surface of the steel core to form the steel-cored aluminum strand, wherein the steel core mainly plays a role in increasing the strength of the whole aluminum strand, and the aluminum strand mainly plays a role in transmitting electric energy. However, in the process of connecting and installing the transformer and the aluminum conductor steel-cored wire, the middle part of the aluminum conductor steel-cored wire needs to be bent, a circular ring-shaped structure is formed at the bent part, the aluminum conductor steel-cored wire with the circular ring-shaped structure is sleeved on the porcelain bottle and is bundled and fixed, and a conventional tool is difficult to bend and form at one time due to the action of the steel core, in the prior art, a steel-cored wire bending device is disclosed, which comprises a handle, a top seat, a support, a hydraulic rod and a base, wherein the support is arranged above the base, the top seat is arranged above the support, the front part of the top seat is provided with a key, the handle is arranged above the top seat, the hydraulic rod is arranged on the top seat, a pressing block is arranged below the hydraulic rod, the hydraulic rod is connected with the pressing block through a screw, the front part of the base is provided with a number scale, the side surface of the base is provided with a knob, and a first moving block is arranged inside the base, and a second moving block is arranged on the side surface of the first moving block, and clamping plate pull rods are arranged above the first moving block and the second moving block. Has the advantages that: structural design is reasonable, convenient to carry, and anytime and anywhere expandes work, need not change the accessory and just can change the number of degrees of bending, and convenient to use improves work efficiency.
However, the above structure has disadvantages that in the bending process of the steel-cored aluminum strand, because the hardness of the steel core is higher, the steel core is difficult to be bent completely by a single bending structure, and meanwhile, the steel-cored aluminum strand is not fixed firmly and can fall off, so that the steel-cored aluminum strand needs to be stopped, and time and labor are wasted.
Therefore, there is a need to provide a new bending device for steel-cored aluminum strand processing to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem provide a can be to the stable fixing of steel-cored aluminum strand wires to can carry out the bending device that is used for steel-cored aluminum strand wires processing of dual multi-angle bending operation.
In order to solve the technical problem, the bending device for steel-cored aluminum stranded wire processing provided by the utility model comprises a working box, a round bar, two bending mechanisms, a shaping mechanism and two fixing mechanisms, wherein the round bar is fixedly arranged in the working box, the two bending mechanisms are both arranged in the working box, the shaping mechanism is arranged on the working box, and the two fixing mechanisms are arranged in the working box;
the bending mechanism comprises a rotating block, a first arc-shaped rod, a first arc-shaped toothed plate, a first motor and a first gear, the rotating block is rotatably installed on a round rod, the first arc-shaped rod is fixedly installed on the outer wall of one side of the rotating block, the first arc-shaped toothed plate is fixedly installed on the first arc-shaped rod, the first motor is fixedly installed on the inner wall of one side of the working box, the first gear is fixedly installed on an output shaft of the first motor, and the first gear is meshed with the first arc-shaped toothed plate;
the shaping mechanism comprises a second motor, an eccentric wheel, a contact block, a connecting rod, a spring, an installation block, a first arc-shaped through hole, two pressing plates, two second arc-shaped rods, two second arc-shaped toothed plates, a third motor and a second gear, the second motor is fixedly installed at the top of the working box, the eccentric wheel is fixedly installed on an output shaft of the second motor, the contact block is arranged above the working box, the connecting rod is fixedly installed at the bottom of the contact block, the bottom end of the connecting rod extends to the working box and is in sliding connection with the top of the working box, the spring is sleeved on the connecting rod in a sliding mode, the bottom end of the spring is fixedly connected with the top of the working box, the top end of the spring is fixedly connected with the bottom of the contact block, the installation block is fixedly installed at the bottom end of the connecting rod, and the first arc-shaped through hole is formed in the outer wall of one side of the installation block, two the clamp plate all sets up in the work box, two the bottom of clamp plate is articulated mutually, two second arc pole fixed mounting is in the one side that the clamp plate that corresponds is close to each other respectively, two the second arc pole all runs through first arc opening, two second arc pinion rack fixed mounting is on the second arc pole that corresponds respectively, third motor fixed mounting is on one side inner wall of first arc opening, second gear fixed mounting is on the output shaft of third motor, the second gear meshes with two second arc pinion racks mutually.
As a further proposal of the utility model, the fixing mechanism comprises an arc-shaped base, a cylindrical box, a fourth motor, a threaded rod, a connecting block, a first auxiliary block, a second auxiliary block, a sliding rod and an L-shaped limiting plate, the arc-shaped base is fixedly arranged at the top of the rotating block, the cylindrical box is arranged below the rotating block, the fourth motor is fixedly arranged on the arc-shaped inner wall of the cylindrical box, the threaded rod is fixedly arranged on the output shaft of the fourth motor, the top end of the threaded rod is rotationally connected with the inner wall at the top of the cylindrical box, the connecting block is arranged in the cylindrical box, the first auxiliary block is fixedly arranged on the outer wall at one side of the connecting block, the first auxiliary block is in threaded connection with the threaded rod, the second auxiliary block is fixedly arranged on the outer wall at one side of the connecting block, the sliding rod is fixedly arranged in the cylindrical box, the sliding rod is in sliding connection with the second auxiliary block, the L-shaped rod is fixedly installed at the top of the connecting block, and the top end of the L-shaped rod extends out of the cylindrical box.
As a further scheme of the utility model, the bottom fixed mounting of turning block has the fifth motor, the output shaft of fifth motor and one side fixed connection of cylinder case, the bottom fixed mounting of turning block has the fixed plate, rotate on one side of fixed plate and install the quarter butt, one end of quarter butt and one side outer wall fixed connection of cylinder case.
As a further proposal of the utility model, the second arc opening has been seted up on the clamp plate, second arc opening and second arc pole looks adaptation, all set up on the both sides outer wall of work box with the rectangle opening.
As a further scheme of the utility model, fixed mounting has the rectangular block on the top inner wall of work box, rectangular block and connecting rod sliding connection.
As a further scheme of the utility model, the bottom fixed mounting of work box has four supporting legs, four the equal fixed mounting in bottom of supporting leg has the rubber clutch blocks.
Compared with the prior art, the utility model provides a bending device for steel-cored aluminum strand wires processing has following beneficial effect:
1. the utility model has the advantages that the bending mechanism is arranged, so that the steel-cored aluminum strand can be subjected to preliminary bending operation, and the steel-cored aluminum strand to be bent can be subjected to preliminary treatment;
2. the utility model has the advantages that the shaping mechanism is arranged, so that the steel-cored aluminum strand subjected to the preliminary bending operation can be bent and shaped, and the bending mechanism can completely bend the bent steel-cored aluminum strand;
3. the utility model discloses a set up fixed establishment for can carry out the effect of fixing with the steel-cored aluminum strand wires that need bend, have locking steel-cored aluminum strand wires that can be firm and avoid it to drop at the in-process of bending.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic front view of a cross-sectional structure of a bending apparatus for processing a steel-cored aluminum strand according to the present invention;
FIG. 2 is an enlarged schematic view of portion A of FIG. 1;
fig. 3 is a schematic view of the front sectional structure of the middle cylindrical box, the first auxiliary block, the fourth motor, the threaded rod, the sliding rod, the second auxiliary block, the L-shaped limiting plate, the fixing plate and the short rod of the present invention;
fig. 4 is the utility model discloses well round bar, turning block, arc base, fixed plate, cylinder case, fifth motor, threaded rod, connecting block and the assembly drawing of L shape limiting plate.
In the figure: 1. a work box; 2. a round bar; 3. rotating the block; 4. a first arcuate bar; 5. a first arc toothed plate; 6. a first motor; 7. a first gear; 8. a second motor; 9. an eccentric wheel; 10. a connecting rod; 11. a spring; 12. mounting blocks; 13. a first arcuate port; 14. pressing a plate; 15. a second arcuate bar; 16. a second arc toothed plate; 17. a third motor; 18. a second gear; 19. a cylindrical case; 20. an L-shaped limiting plate.
Detailed Description
Please refer to fig. 1, fig. 2, fig. 3 and fig. 4 in combination, wherein fig. 1 is a schematic front sectional view illustrating a bending apparatus for processing a steel-cored aluminum strand according to the present invention; FIG. 2 is an enlarged schematic view of portion A of FIG. 1; fig. 3 is a schematic view of the front sectional structure of the middle cylindrical box, the first auxiliary block, the fourth motor, the threaded rod, the sliding rod, the second auxiliary block, the L-shaped limiting plate, the fixing plate and the short rod of the present invention; fig. 4 is the utility model discloses well round bar, turning block, arc base, fixed plate, cylinder case, fifth motor, threaded rod, connecting block and the assembly drawing of L shape limiting plate. The bending device for processing the steel-cored aluminum strand comprises a working box 1, a round rod 2, two bending mechanisms, a shaping mechanism and two fixing mechanisms, wherein the round rod 2 is fixedly arranged in the working box 1, the two bending mechanisms are arranged in the working box 1, the shaping mechanism is arranged on the working box 1, and the two fixing mechanisms are arranged in the working box 1; the bending mechanism comprises a rotating block 3, a first arc-shaped rod 4, a first arc-shaped toothed plate 5, a first motor 6 and a first gear 7, the rotating block 3 is rotatably installed on the round rod 2, the first arc-shaped rod 4 is fixedly installed on the outer wall of one side of the rotating block 3, the first arc-shaped toothed plate 5 is fixedly installed on the first arc-shaped rod 4, the first motor 6 is fixedly installed on the inner wall of one side of the working box 1, the first gear 7 is fixedly installed on an output shaft of the first motor 6, and the first gear 7 is meshed with the first arc-shaped toothed plate 5;
the shaping mechanism comprises a second motor 8, an eccentric wheel 9, a contact block, a connecting rod 10, a spring 11, an installation block 12, a first arc-shaped through hole 13, two pressing plates 14, two second arc-shaped rods 15, two second arc-shaped toothed plates 16, a third motor 17 and a second gear 18, the second motor 8 is fixedly installed at the top of the working box 1, the eccentric wheel 9 is fixedly installed on an output shaft of the second motor 8, the contact block is arranged above the working box 1, the connecting rod 10 is fixedly installed at the bottom of the contact block, the bottom end of the connecting rod 10 extends to the working box 1 and is in sliding connection with the top of the working box 1, the spring 11 is slidably sleeved on the connecting rod 10, the bottom end of the spring 11 is fixedly connected with the top of the working box 1, the top end of the spring 11 is fixedly connected with the bottom of the contact block, the installation block 12 is fixedly installed at the bottom end of the connecting rod 10, first arc through opening 13 is seted up on one side outer wall of installation piece 12, two clamp plate 14 all sets up in work box 1, two the bottom of clamp plate 14 is articulated mutually, two second arc pole 15 is fixed mounting respectively in the one side that the clamp plate 14 that corresponds is close to each other, two second arc pole 15 all runs through first arc through opening 13, two second arc pinion rack 16 is fixed mounting respectively on the second arc pole 15 that corresponds, third motor 17 fixed mounting is on one side inner wall of first arc through opening 13, 18 fixed mounting of second gear is on the output shaft of third motor 17, 18 meshes with two second arc pinion racks 16 mutually.
As shown in fig. 3 and 4, the fixing mechanism includes an arc-shaped base, a cylindrical box 19, a fourth motor, a threaded rod, a connecting block, a first auxiliary block, a second auxiliary block, a sliding rod and an L-shaped limiting plate 20, the arc-shaped base is fixedly mounted on the top of the rotating block 3, the cylindrical box 19 is disposed below the rotating block 3, the fourth motor is fixedly mounted on the arc-shaped inner wall of the cylindrical box 19, the threaded rod is fixedly mounted on an output shaft of the fourth motor, the top end of the threaded rod is rotatably connected with the inner wall of the top of the cylindrical box 19, the connecting block is disposed in the cylindrical box 19, the first auxiliary block is fixedly mounted on the outer wall of one side of the connecting block, the first auxiliary block is in threaded connection with the threaded rod, the second auxiliary block is fixedly mounted on the outer wall of one side of the connecting block, the sliding rod is fixedly mounted in the cylindrical box 19, and the sliding rod is slidably connected with the second auxiliary block, the L-shaped rod 20 is fixedly arranged at the top of the connecting block, and the top end of the L-shaped rod 20 extends out of the cylindrical box 19;
through arc base, cylinder case 19, fourth motor, threaded rod, connecting block, supplementary piece one, supplementary piece two, slide bar and L shape limiting plate 20 mutually supporting, the effect that can reciprocate L shape limiting plate 20 is formed, has avoided the unable removal of L shape limiting plate 220 to lead to unable fixed steel-cored aluminum strand wires.
As shown in fig. 1, a fifth motor is fixedly installed at the bottom of the rotating block 3, an output shaft of the fifth motor is fixedly connected with one side of the cylindrical box 19, a fixed plate is fixedly installed at the bottom of the rotating block 3, a short rod is rotatably installed on one side of the fixed plate, and one end of the short rod is fixedly connected with the outer wall of one side of the cylindrical box 19;
through mutual cooperation of fifth motor, fixed plate and quarter butt, form and to have avoided the unable rotation of L shape limiting plate to lead to the steel-cored aluminum strand wires after bending to be difficult for taking out with 19 pivoted effects of cylinder case.
As shown in fig. 1, a second arc-shaped through hole is formed in the pressing plate 14, the second arc-shaped through hole is matched with the second arc-shaped rod 15, and rectangular through holes are formed in the outer walls of two sides of the working box 1;
through second arc opening, rectangle opening mutually support, form and to make second arc pole 15 gliding effect on second arc opening, avoided second arc pole 15 to support unable removal behind clamp plate 14.
As shown in fig. 1, a rectangular block is fixedly installed on the inner wall of the top of the working box 1, and the rectangular block is connected with a connecting rod 10 in a sliding manner;
through the mutual cooperation of rectangular block and connecting rod 10, the formation can assist connecting rod 10 to reciprocate, has avoided connecting rod 10 to take place to incline at the removal in-process.
As shown in fig. 1, four support legs are fixedly installed at the bottom of the work box 1, and rubber friction blocks are fixedly installed at the bottom ends of the four support legs;
through supporting leg and rubber clutch blocks mutually supporting, the formation can make work box 1 steadily place subaerial, has avoided work box 1 because the frictional force undersize with ground and has taken place the displacement in the course of the work.
The utility model provides a bending device for steel-cored aluminum strand wires processing's theory of operation as follows:
the first step is as follows: when the steel-cored aluminum strand needs to be fixed, firstly, the steel-cored aluminum strand is placed on the arc-shaped base through the rectangular through hole in the working box 1, then the fourth motor is started to drive the cylindrical box 19 to rotate until the L-shaped limiting plate 20 rotates to the position above the arc-shaped base, the fifth motor is started to drive the threaded rod to rotate, the threaded rod drives the connecting block to move downwards until the L-shaped limiting plate 20 abuts against the steel-cored aluminum strand, the fixing effect on the steel-cored aluminum strand is completed, and if the steel-cored aluminum strand needs to be taken out, reverse operation can be performed;
the second step is as follows: when the steel-cored aluminum strand is required to be bent, firstly, the first motor 6 is started to drive the first gear 7 to rotate, the first gear 7 drives the first arc-shaped toothed plate 5, the first arc-shaped rod 4 and the rotating blocks 3 to rotate, the two rotating blocks 3 bend the steel-cored aluminum strand fixed above the rotating blocks from the hinged position, and the larger the rotating angle of the first gear 7 is, the larger the bending angle is, so that the preliminary bending operation on the steel-cored aluminum strand is completed;
the third step: when the bent steel-cored aluminum strand needs to be bent and shaped again, the third motor 17 is started to drive the second gear 18 to rotate, the second gear 18 rotates to drive the two second arc-shaped toothed plates 16 to rotate in different directions, the two second arc-shaped rods 15 and the two pressing plates 14 are close to each other, the angle formed by the two pressing plates 14 can be controlled by the rotating angle, the second motor 8 is started to drive the eccentric wheel 9 to extrude the connecting rod 10, the two pressing plates 14 are driven to reciprocate, the bent steel-cored aluminum strand is shaped by the two pressing plates 14, the bending degree of the steel-cored aluminum strand cannot be changed due to the elastic potential energy of the steel-cored aluminum strand, and the shaping effect of the steel-cored aluminum strand is achieved.
It should be noted that the device structure and the accompanying drawings of the present invention mainly describe the principle of the present invention, and in the design principle, the settings of the power mechanism, the power supply system, the control system, etc. of the device are not completely described, and on the premise that the skilled person understands the principle of the present invention, the details of the power mechanism, the power supply system, and the control system can be clearly known, the control mode of the application file is automatically controlled by the controller, and the control circuit of the controller can be realized by simple programming of the skilled person in the art;
the standard parts used in the method can be purchased from the market, and can be customized according to the description of the specification and the accompanying drawings, the specific connection mode of each part adopts conventional means such as mature bolts, rivets, welding and the like in the prior art, the machines, parts and equipment adopt conventional models in the prior art, and the structure and the principle of the parts known by the skilled person can be known by technical manuals or conventional experimental methods.
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, or a direct or indirect use of these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents, which are to be included within the scope of the invention as defined in the claims.
Claims (6)
1. The utility model provides a bending device for steel cored aluminum strand wires processing which characterized in that includes:
the round rod bending device comprises a working box, a round rod, two bending mechanisms, a shaping mechanism and two fixing mechanisms, wherein the round rod is fixedly arranged in the working box;
the bending mechanism comprises a rotating block, a first arc-shaped rod, a first arc-shaped toothed plate, a first motor and a first gear, the rotating block is rotatably installed on a round rod, the first arc-shaped rod is fixedly installed on the outer wall of one side of the rotating block, the first arc-shaped toothed plate is fixedly installed on the first arc-shaped rod, the first motor is fixedly installed on the inner wall of one side of the working box, the first gear is fixedly installed on an output shaft of the first motor, and the first gear is meshed with the first arc-shaped toothed plate;
the shaping mechanism comprises a second motor, an eccentric wheel, a contact block, a connecting rod, a spring, an installation block, a first arc-shaped through hole, two pressing plates, two second arc-shaped rods, two second arc-shaped toothed plates, a third motor and a second gear, the second motor is fixedly installed at the top of the working box, the eccentric wheel is fixedly installed on an output shaft of the second motor, the contact block is arranged above the working box, the connecting rod is fixedly installed at the bottom of the contact block, the bottom end of the connecting rod extends to the working box and is in sliding connection with the top of the working box, the spring is sleeved on the connecting rod in a sliding mode, the bottom end of the spring is fixedly connected with the top of the working box, the top end of the spring is fixedly connected with the bottom of the contact block, the installation block is fixedly installed at the bottom end of the connecting rod, and the first arc-shaped through hole is formed in the outer wall of one side of the installation block, two the clamp plate all sets up in the work box, two the bottom of clamp plate is articulated mutually, two second arc pole fixed mounting is in the one side that the clamp plate that corresponds is close to each other respectively, two the second arc pole all runs through first arc opening, two second arc pinion rack fixed mounting is on the second arc pole that corresponds respectively, third motor fixed mounting is on one side inner wall of first arc opening, second gear fixed mounting is on the output shaft of third motor, the second gear meshes with two second arc pinion racks mutually.
2. The bending device for steel-cored aluminum strand processing according to claim 1, wherein: the fixing mechanism comprises an arc-shaped base, a cylindrical box, a fourth motor, a threaded rod, a connecting block, a first auxiliary block, a second auxiliary block, a sliding rod and an L-shaped limiting plate, the arc-shaped base is fixedly arranged at the top of the rotating block, the cylindrical box is arranged below the rotating block, the fourth motor is fixedly arranged on the arc-shaped inner wall of the cylindrical box, the threaded rod is fixedly arranged on an output shaft of the fourth motor, the top end of the threaded rod is rotatably connected with the inner wall of the top of the cylindrical box, the connecting block is arranged in the cylindrical box, the first auxiliary block is fixedly arranged on the outer wall of one side of the connecting block, the first auxiliary block is in threaded connection with the threaded rod, the second auxiliary block is fixedly arranged on the outer wall of one side of the connecting block, the sliding rod is fixedly arranged in the cylindrical box, the sliding rod is in sliding connection with the second auxiliary block, and the L-shaped rod is fixedly arranged at the top of the connecting block, the top end of the L-shaped rod extends out of the cylindrical box.
3. The bending device for steel-cored aluminum strand processing according to claim 2, wherein: the bottom of the rotating block is fixedly provided with a fifth motor, an output shaft of the fifth motor is fixedly connected with one side of the cylindrical box, the bottom of the rotating block is fixedly provided with a fixed plate, one side of the fixed plate is rotatably provided with a short rod, and one end of the short rod is fixedly connected with the outer wall of one side of the cylindrical box.
4. The bending device for steel-cored aluminum strand processing according to claim 1, wherein: the clamp plate is provided with a second arc-shaped through opening, the second arc-shaped through opening is matched with the second arc-shaped rod, and the outer walls of the two sides of the working box are provided with rectangular through openings.
5. The bending device for steel-cored aluminum strand processing according to claim 1, wherein: a rectangular block is fixedly mounted on the inner wall of the top of the working box and is in sliding connection with the connecting rod.
6. The bending device for steel-cored aluminum strand processing according to claim 1, wherein: the bottom fixed mounting of work box has four supporting legs, four the equal fixed mounting in bottom of supporting leg has the rubber clutch blocks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121034392.5U CN214720125U (en) | 2021-05-14 | 2021-05-14 | Bending device for steel-cored aluminum strand processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121034392.5U CN214720125U (en) | 2021-05-14 | 2021-05-14 | Bending device for steel-cored aluminum strand processing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214720125U true CN214720125U (en) | 2021-11-16 |
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ID=78622520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121034392.5U Active CN214720125U (en) | 2021-05-14 | 2021-05-14 | Bending device for steel-cored aluminum strand processing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214720125U (en) |
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2021
- 2021-05-14 CN CN202121034392.5U patent/CN214720125U/en active Active
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| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wu Hairong Inventor after: Zheng Xidui Inventor after: Wu Haijun Inventor before: Wu Hairong Inventor before: Zheng Xidui Inventor before: Wu Haijun |
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| CB03 | Change of inventor or designer information |