CN210730531U - Large-scale axle class wedge cross rolling mill - Google Patents
Large-scale axle class wedge cross rolling mill Download PDFInfo
- Publication number
- CN210730531U CN210730531U CN201921417927.XU CN201921417927U CN210730531U CN 210730531 U CN210730531 U CN 210730531U CN 201921417927 U CN201921417927 U CN 201921417927U CN 210730531 U CN210730531 U CN 210730531U
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- rack
- plate
- roller
- rolling mill
- upper roller
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Abstract
The utility model provides a large-scale shaft wedge cross rolling mill, which comprises a frame, a balancing device arranged at the top of the frame and a roller device arranged at the middle part of the frame, wherein the bottom of the frame is provided with a driving device for driving the roller device to adjust; the roller device comprises an upper roller and a lower roller which are arranged on a rack, a limiting mechanism for limiting the movement of the upper roller is arranged at the position, corresponding to the upper roller, of the rack, and an adjusting mechanism for adjusting the axial position of the lower roller is arranged at the position, corresponding to the lower roller, of the rack; and a guide mechanism is arranged on the frame corresponding to the position between the upper roller and the lower roller. The utility model has simple structure, easy adjustment and good universality, can be suitable for rolling products of various specifications through simple operation and adjustment, and is beneficial to improving the processing efficiency of the products; the balancing device arranged on the frame and the pressing servo cylinder can jointly eliminate assembly gaps of an upper roller or a bearing seat and the like, and the stability of the upper roller during working is improved.
Description
Technical Field
The invention belongs to the field of rolling mills, and particularly relates to a large-scale shaft wedge cross rolling mill.
Background
In recent years, with the increasing demand of large-diameter shaft parts along with the development of times, the cross wedge rolling is increasingly large as a new process which is very suitable for producing stepped shafts and rotary parts. The existing large-scale shaft production needs to be processed by a fast section machine, a precision forging machine and other equipment to forge and press into a rough blank, and then rough machining and finish machining are carried out to obtain the required step shaft, so that the utilization rate of materials is low, the energy consumption is high, the time is long and the like. The traditional cross wedge rolling mill can only roll large shafts with the diameter of 150mm and the length of 1200mm at most, a single die can only roll step shafts with one specification, raw materials with different diameters and lengths cannot be produced under the same die, so that the investment of the die is large, the time for adjusting the equipment is long, and the important problem to be solved urgently is solved.
Disclosure of Invention
In view of the above, the present invention provides a large-scale shaft wedge cross rolling mill to overcome the above-mentioned defects in the prior art.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a large-scale shaft type cross wedge rolling mill comprises a rack, a balancing device arranged at the top of the rack and a roller device arranged in the middle of the rack, wherein a driving device used for driving the roller device to adjust is arranged at the bottom of the rack;
the roller device comprises an upper roller and a lower roller which are arranged on a rack, a limiting mechanism for limiting the movement of the upper roller is arranged at the position, corresponding to the upper roller, of the rack, and an adjusting mechanism for adjusting the axial position of the lower roller is arranged at the position, corresponding to the lower roller, of the rack; a guide mechanism is arranged on the frame corresponding to the position between the upper roller and the lower roller;
the balance device comprises a main balance cylinder arranged on the rack and a lifting assembly arranged on the main balance cylinder and used for lifting the upper roller, and pressing servo cylinders used for driving the upper roller to press down are arranged on the rack and correspond to two sides of the lifting assembly;
the driving device comprises a pressing servo cylinder arranged at the bottom of the rack and used for driving the lower roller to press upwards.
Further, the lifting assembly comprises a support arranged at the telescopic end of the main balance cylinder and balance beams correspondingly arranged on the support, the middle of each balance beam is rotatably arranged on the support, hooks used for hooking the upper roller are arranged at the two ends of each balance beam, and hook hanging seats matched with the hooks are arranged on the upper roller.
Furthermore, the adjusting mechanism comprises a locking stud horizontally arranged on the rack and a sliding bottom plate arranged on the locking stud; the sliding bottom plate is provided with a through hole matched with the locking stud, and a pushing assembly used for adjusting the position of the sliding bottom plate is arranged between the sliding bottom plate and the rack.
Furthermore, the pushing assembly comprises a wedge plate, the bottom of the wedge plate is inserted between the sliding bottom plate and the rack, and the top of the wedge plate is provided with a barrier strip; one side of the sliding bottom plate, which faces the rack, is provided with an inclined plane part matched with the inclined wedge plate, and the other side of the sliding bottom plate is provided with a limiting assembly used for limiting the lower roller.
Furthermore, an adjusting bolt for pushing the wedge plate to move and a locking bolt for fixing the wedge plate are arranged on the barrier strip; one end of the adjusting bolt penetrating through the barrier strip props against the sliding bottom plate, and a bolt hole matched with the locking bolt is formed in the position, corresponding to the locking bolt, of the sliding bottom plate.
Furthermore, the lower roller is installed on the rack through a bearing seat, the limiting assembly comprises a pressing plate arranged on a sliding bottom plate, the pressing plate is horizontally and slidably installed on the sliding bottom plate, a horizontal strip-shaped hole matched with the locking stud is formed in the pressing plate, and a locking nut used for fixing the pressing plate is arranged on the locking stud; the pressing plate is provided with a positioning groove, and the bearing seat is provided with a positioning plate matched with the positioning groove.
Furthermore, a vertical strip-shaped hole matched with the locking stud is formed in the position, corresponding to the locking stud, of the wedge plate.
Furthermore, the guide mechanism comprises guide plates correspondingly arranged on the frame, each guide plate is slidably mounted on the frame, and a driving assembly for adjusting the position of each guide plate is arranged on the frame.
Furthermore, the bottom of the rack is provided with an outlet guide plate corresponding to the position where the workpiece is discharged.
Furthermore, a baseboard is arranged at the bottom of the machine frame.
Compared with the prior art, the invention has the following advantages:
the invention has simple structure, easy adjustment and good universality, can be suitable for rolling products with various specifications by simple operation and adjustment, and is beneficial to improving the processing efficiency of the products; the balance device arranged on the rack and the pressing servo cylinder can jointly eliminate assembly gaps of an upper roller or a bearing seat and the like, so that the working stability of the upper roller is improved, and the processing quality of a product is improved; the axial position of the lower roller is adjusted by using the inclined wedge plate, the applicability of the cross wedge rolling mill is improved, an operator can simply screw the locking nut to realize the common fixation of the inclined wedge plate and the lower roller, the fixation can be completed by one time, the adjustment and the installation speed of the lower roller are greatly improved, and the processing efficiency and the use convenience of the cross wedge rolling mill are improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the invention without limitation. In the drawings:
FIG. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic structural diagram of a balancing device according to an embodiment of the present invention;
FIG. 3 is a schematic view of the structure of the upper roll in the inventive embodiment;
FIG. 4 is a schematic view of the structure of the lower roll in the inventive embodiment;
FIG. 5 is a schematic structural diagram of an adjusting mechanism according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a cam plate according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a sliding bottom plate in the inventive embodiment of the present invention.
Description of reference numerals:
1-a frame; 2-upper roller; 3, rolling down; 4-a balancing device; 401-main balancing cylinder; 402-a balance beam; 403-a scaffold; 404-a hook; 5-a guide plate; 6-an outlet guide plate; 7-base anchor; 8-a drive assembly; 9-pressing down the servo cylinder; 10-pressing a servo cylinder; 11-an adjustment mechanism; 101-a sliding bottom plate; 102-a cam plate; 103-barrier strip; 104-adjusting bolt; 105-a locking bolt; 106-a compacting plate; 107-positioning grooves; 108-locking studs; 109-a locking nut; 110-horizontal bar-shaped holes; 111-vertical strip holes; 112-a through hole; 12-a limiting mechanism; 13-a bearing seat; 14-positioning plate; 15-hooking base; 16-hook groove.
Detailed Description
It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.
The invention will be described in detail with reference to the following embodiments with reference to the attached drawings.
A large-scale shaft wedge cross rolling mill is shown in figures 1 to 7 and comprises a frame 1, a balancing device 4 arranged at the top of the frame 1 and a roller device arranged in the middle of the frame 1, wherein a driving device for driving the roller device to adjust is arranged at the bottom of the frame 1;
the roller device comprises an upper roller 2 and a lower roller 3 which are arranged on a rack 1, wherein a limiting mechanism 12 for limiting the movement of the upper roller 2 is arranged at the position, corresponding to the upper roller 2, on the rack 1, and an adjusting mechanism 11 for adjusting the axial position of the lower roller 3 is arranged at the position, corresponding to the lower roller 3; a guide mechanism is arranged on the frame 1 corresponding to the position between the upper roller 2 and the lower roller 3; specifically, two ends of the upper roller 2 and the lower roller 3 can be arranged on the frame 1 through bearing blocks 13;
the balance device 4 comprises a main balance cylinder 401 arranged on the frame 1 and a lifting assembly which is arranged on the main balance cylinder 401 and is used for lifting the upper roller 2, and two sides of the frame 1 corresponding to the lifting assembly are provided with pressing servo cylinders 9 used for driving the upper roller 2 to press down;
the driving device comprises a pressing servo cylinder 10 which is arranged at the bottom of the frame 1 and is used for driving the lower roller 3 to press upwards; specifically, the main balance cylinder 401, the pressing servo cylinder 9, and the pressing servo cylinder 10 may each employ a linear actuator such as a servo cylinder, a servo motor, or a hydraulic cylinder.
The lifting assembly comprises a support 403 arranged at the telescopic end of a main balance cylinder 401 and balance beams 402 correspondingly arranged on the support 403, the middle part of each balance beam 402 is rotatably arranged on the support 403, hooks 404 for hooking an upper roller 2 are arranged at the two ends of each balance beam 402, a hook seat 15 matched with the hooks 404 is arranged on the upper roller 2, the hook seat 15 can be arranged on a bearing seat, and a hook groove 16 matched with the hooks 404 is arranged on the hook seat 15;
specifically, the balance beam 402 can be arranged two corresponding to two axial sides of the upper roller 2, as long as the balance beam 402 can stably hook the upper roller 2, the balance beam 402 can be driven to move up and down through the extension and contraction of the main balance cylinder 401, and then the bearing block 13 of the upper roller 2 is driven to be tightly attached to the pressing servo cylinder 9, namely, the main balance cylinder 401 drives the upper roller 2 to move up, the pressing servo cylinder 9 pushes the upper roller 2 downwards, under the common tensioning of the balance device 4 and the pressing servo cylinder 9, the assembly gaps of the upper roller 2 or the bearing block 13 and the like can be eliminated, and the improvement of the working stability of the upper roller 2 is facilitated.
The adjusting mechanism 11 comprises a locking stud 108 horizontally arranged on the rack 1 and a sliding bottom plate 101 arranged on the locking stud 108; a through hole 112 matched with the locking stud 108 is formed in the sliding bottom plate 101, and a pushing assembly used for adjusting the position of the sliding bottom plate 101 is arranged between the sliding bottom plate 101 and the rack 1; the pushing assembly comprises a wedge plate 102, the bottom of the wedge plate 102 is inserted between the sliding bottom plate 101 and the rack 1, and the top of the wedge plate 102 is provided with a barrier strip 103; one side of the sliding bottom plate 101, which faces the rack 1, is provided with an inclined plane part matched with the inclined wedge plate 102, and the other side is provided with a limiting component used for limiting the lower roller 3; the barrier strip 103 is provided with an adjusting bolt 104 for pushing the wedge plate 102 to move and a locking bolt 105 for fixing the wedge plate 102; the adjusting bolt 104 penetrates through one end of the barrier strip 103 to prop against the sliding bottom plate 101, and a bolt hole matched with the locking bolt 105 is formed in the position, corresponding to the locking bolt 105, on the sliding bottom plate 101;
the lower roller 3 is mounted on the frame 1 through a bearing seat 13, the limiting assembly comprises a pressing plate 106 arranged on a sliding base plate 101, the pressing plate 106 is horizontally and slidably mounted on the sliding base plate 101, a horizontal strip-shaped hole 110 matched with a locking stud 108 is formed in the pressing plate 106, a locking nut 109 used for fixing the pressing plate 106 is arranged on the locking stud 108, and a threaded hole matched with the locking stud 108 is formed in the frame 1;
specifically, a positioning groove 107 is formed in one side, facing the sliding bottom plate 101, of the pressing plate 106, a positioning plate 14 in sliding fit with the positioning groove 107 can be arranged on the bearing seat 13, the pressing plate 106 and the sliding bottom plate 101 can limit the positioning plate 14, the pressing plate 106 and the sliding bottom plate 101 can drive the lower roller 3 to axially move through the matching of the positioning groove 107 and the positioning plate 14, and meanwhile, the positioning groove 107 can also play a certain limiting role in the bearing seat 13, so that the upper roller 2 can stably vertically move;
in order to enable the lower roller 3 to be better matched with the upper roller 2 to adapt to different workpieces, after the lower roller 3 and the upper roller 2 are installed, the axial position of the lower roller 3 needs to be adjusted, so that the upper roller 2 and the lower roller 3 are aligned as required, and the processing quality and the processing precision of the workpieces are improved; specifically, an operator may not install the locking nut 109, so that the sliding bottom plate 101 and the pressing plate 106 are in a movable state, and then manually screw the adjusting bolt 104, so that the adjusting bolt 104 drives the wedge plate 102 to ascend or descend, and the wedge plate 102 pushes the sliding bottom plate 101 to move along the locking stud 108 along the inclined plane portion of the sliding bottom plate 101, thereby driving the lower roller 3 to axially move, which is very convenient to operate, and greatly reduces the difficulty in adjusting the lower roller 3;
after the lower roller 3 is adjusted, an operator only needs to screw the locking bolt 105 and the locking nut 109, and the locking bolt and the locking nut can respectively fix the top and the middle of the wedge plate 102, so that the wedge plate 102 can stably support the sliding bottom plate 101 all the time, and the stability of the sliding bottom plate 101 during the operation of the lower roller 3 is ensured; meanwhile, the pressing plate 106 can be fixed by screwing the locking nut 109, so that the pressing plate 106 can block and fix the lower roller 3, the lower roller 3 is prevented from being separated from the rack 1, and the working stability of the lower roller 3 is further improved; the wedge plate 102 and the lower roller 3 can be jointly fixed through simply screwing the locking nut 109, and the fixation can be completed by one time, so that the adjustment and installation speed of the lower roller 3 are greatly improved, and the processing efficiency and the use convenience of the wedge cross rolling mill are improved.
In an alternative embodiment, the limiting mechanism 12 may adopt a baffle plate, or may adopt a structure similar to the limiting assembly, as long as the limitation of the upper roller 2 can be realized; specifically, the limiting mechanism 12 includes a pressing plate 106 slidably disposed on the frame 1, a locking stud 108 is disposed on the frame 1 at a position corresponding to the pressing plate 106, a horizontal strip-shaped hole 110 matched with the locking stud 108 is disposed on the pressing plate 106, and a locking nut 109 for fixing the pressing plate 106 is disposed on the locking stud 108; when the upper roller 2 needs to be replaced, the upper roller 2 can be replaced quickly by disassembling the baffle or the pressing plate 106, and the operation is very convenient.
A vertical strip-shaped hole 111 matched with the locking stud 108 is formed in the wedge plate 102 corresponding to the locking stud 108; specifically, the vertical strip-shaped hole 111 is formed in the wedge plate 102, the locking stud 108 can penetrate through the wedge plate 102, the locking stud 108 can also play a good limiting role in the wedge plate 102, and when an operator tightens the locking nut 109, the locking nut 109 can better fix the wedge plate 102.
The guide mechanism comprises guide plates 5 correspondingly arranged on a frame 1, each guide plate 5 is slidably mounted on the frame 1, a driving assembly 8 for adjusting the position of each guide plate 5 is arranged on the frame 1, the driving assembly 8 can adopt drivers such as adjusting bolts or hydraulic cylinders, and the like, as long as the driving of the guide plates 5 can be realized;
specifically, the frame 1 is provided with a slideway for mounting the guide plates 5, the two guide plates 5 can be correspondingly arranged, a gap between the two guide plates 5 is a rolling area of a workpiece, and the guide plates 5 can well limit the workpiece; when workpieces with different lengths or diameters are machined, the cross wedge rolling mill can roll the workpieces with different specifications by synchronously adjusting the gap between the upper rollers 2, the axial position of the lower rollers 3 and the gap of the guide plate 5, so that the applicability and the universality of the cross wedge rolling mill are greatly improved.
The bottom of the rack 1 is provided with an outlet guide plate 6 corresponding to the position of the workpiece, and the outlet guide plate 6 can well guide the workpiece to fall down to prevent the workpiece from being collided and damaged.
The bottom of the rack 1 is provided with the base plate 7, the base plate 7 can well support the rack 1, and the stability of the rack 1 is improved.
The cross wedge rolling mill can use different dies and working modes according to different general types of products, the rolling requirements of products with different specifications are met by replacing the upper roller and the lower roller and adaptively adjusting the axial position of the lower roller and the position of the guide plate, and compared with the existing cross wedge rolling mill, the cross wedge rolling mill is more convenient to install and adjust, and is beneficial to improving the processing efficiency and the processing quality of the products.
The invention has simple structure, easy adjustment and good universality, can be suitable for rolling products with various specifications by simple operation and adjustment, and is beneficial to improving the processing efficiency of the products; the balance device arranged on the rack and the pressing servo cylinder can jointly eliminate assembly gaps of an upper roller or a bearing seat and the like, so that the working stability of the upper roller is improved, and the processing quality of a product is improved; the axial position of the lower roller is adjusted by using the inclined wedge plate, the applicability of the cross wedge rolling mill is improved, an operator can simply screw the locking nut to realize the common fixation of the inclined wedge plate and the lower roller, the fixation can be completed by one time, the adjustment and the installation speed of the lower roller are greatly improved, and the processing efficiency and the use convenience of the cross wedge rolling mill are improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present invention, should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a large-scale axle class wedge cross rolling mill which characterized in that:
the roller device comprises a rack, a balancing device arranged at the top of the rack and a roller device arranged in the middle of the rack, wherein a driving device for driving the roller device to adjust is arranged at the bottom of the rack;
the roller device comprises an upper roller and a lower roller which are arranged on a rack, a limiting mechanism for limiting the movement of the upper roller is arranged at the position, corresponding to the upper roller, of the rack, and an adjusting mechanism for adjusting the axial position of the lower roller is arranged at the position, corresponding to the lower roller, of the rack; a guide mechanism is arranged on the frame corresponding to the position between the upper roller and the lower roller;
the balance device comprises a main balance cylinder arranged on the rack and a lifting assembly arranged on the main balance cylinder and used for lifting the upper roller, and pressing servo cylinders used for driving the upper roller to press down are arranged on the rack and correspond to two sides of the lifting assembly;
the driving device comprises a pressing servo cylinder arranged at the bottom of the rack and used for driving the lower roller to press upwards.
2. The large shaft cross wedge rolling mill according to claim 1, wherein: the lifting assembly comprises a support arranged at the telescopic end of the main balance cylinder and balance beams correspondingly arranged on the support, the middle of each balance beam is rotatably arranged on the support, hooks used for hooking the upper roller are arranged at the two ends of each balance beam, and hook hanging seats matched with the hooks are arranged on the upper roller.
3. The large shaft cross wedge rolling mill according to claim 1, wherein: the adjusting mechanism comprises a locking stud horizontally arranged on the rack and a sliding bottom plate arranged on the locking stud; the sliding bottom plate is provided with a through hole matched with the locking stud, and a pushing assembly used for adjusting the position of the sliding bottom plate is arranged between the sliding bottom plate and the rack.
4. The large shaft cross wedge rolling mill according to claim 3, wherein: the pushing assembly comprises a wedge plate, the bottom of the wedge plate is inserted between the sliding bottom plate and the rack, and a barrier strip is arranged at the top of the wedge plate; one side of the sliding bottom plate, which faces the rack, is provided with an inclined plane part matched with the inclined wedge plate, and the other side of the sliding bottom plate is provided with a limiting assembly used for limiting the lower roller.
5. The large shaft cross wedge rolling mill according to claim 4, wherein: the barrier strip is provided with an adjusting bolt for pushing the inclined wedge plate to move and a locking bolt for fixing the inclined wedge plate; one end of the adjusting bolt penetrating through the barrier strip props against the sliding bottom plate, and a bolt hole matched with the locking bolt is formed in the position, corresponding to the locking bolt, of the sliding bottom plate.
6. The large shaft cross wedge rolling mill according to claim 4, wherein: the lower roller is installed on the rack through a bearing seat, the limiting assembly comprises a pressing plate arranged on a sliding bottom plate, the pressing plate is horizontally and slidably installed on the sliding bottom plate, a horizontal strip-shaped hole matched with the locking stud is formed in the pressing plate, and a locking nut used for fixing the pressing plate is arranged on the locking stud; the pressing plate is provided with a positioning groove, and the bearing seat is provided with a positioning plate matched with the positioning groove.
7. The large shaft cross wedge rolling mill according to claim 4, wherein: and a vertical strip-shaped hole matched with the locking stud is formed in the position, corresponding to the locking stud, of the inclined wedge plate.
8. The large shaft cross wedge rolling mill according to claim 1, wherein: the guide mechanism comprises guide plates correspondingly arranged on the frame, each guide plate is slidably mounted on the frame, and a driving assembly used for adjusting the position of each guide plate is arranged on the frame.
9. The large shaft cross wedge rolling mill according to claim 1, wherein: and an outlet guide plate is arranged at the position, corresponding to the workpiece discharge, at the bottom of the rack.
10. The large shaft cross wedge rolling mill according to claim 1, wherein: a base plate is arranged at the bottom of the machine frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921417927.XU CN210730531U (en) | 2019-08-28 | 2019-08-28 | Large-scale axle class wedge cross rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921417927.XU CN210730531U (en) | 2019-08-28 | 2019-08-28 | Large-scale axle class wedge cross rolling mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210730531U true CN210730531U (en) | 2020-06-12 |
Family
ID=70987315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921417927.XU Withdrawn - After Issue CN210730531U (en) | 2019-08-28 | 2019-08-28 | Large-scale axle class wedge cross rolling mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210730531U (en) |
-
2019
- 2019-08-28 CN CN201921417927.XU patent/CN210730531U/en not_active Withdrawn - After Issue
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200612 Effective date of abandoning: 20201106 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20200612 Effective date of abandoning: 20201106 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |