CN108561445B - Ball mounting device for bearing retainer - Google Patents
Ball mounting device for bearing retainer Download PDFInfo
- Publication number
- CN108561445B CN108561445B CN201810462432.2A CN201810462432A CN108561445B CN 108561445 B CN108561445 B CN 108561445B CN 201810462432 A CN201810462432 A CN 201810462432A CN 108561445 B CN108561445 B CN 108561445B
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- China
- Prior art keywords
- disc
- fixed
- hole
- die
- ball
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- Expired - Fee Related
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C43/00—Assembling bearings
- F16C43/04—Assembling rolling-contact bearings
- F16C43/06—Placing rolling bodies in cages or bearings
- F16C43/065—Placing rolling bodies in cages or bearings in cages
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
- F16C2226/10—Force connections, e.g. clamping
- F16C2226/12—Force connections, e.g. clamping by press-fit, e.g. plug-in
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a ball mounting device of a bearing retainer, and relates to the technical field of bearing manufacturing. The invention comprises an upper die mechanism and a lower die; the upper die mechanism comprises a blanking device and an upper pressing die; the blanking device comprises a fixed disc, a guide disc and a rotating disc; the upper pressing die and the lower die are respectively provided with an arc notch and a fixed trough. The invention solves the problems that the installation of the balls on the existing retainer needs to be manually completed and the production efficiency is low by utilizing the matching of the fixed disc, the rotating disc and the guide disc with the lower die provided with the channel and the fixed material groove; the channel and the fixed silo on the lower mould are utilized to guide and position the ball, so that the ball is accurately installed and positioned, the ball is controlled to be discharged through rotation of the rotating disc, the problems that the ball is placed less or more and the ball is damaged are solved, and the product quality is effectively improved.
Description
Technical Field
The invention belongs to the technical field of bearing manufacturing, and particularly relates to a ball mounting device of a bearing retainer.
Background
The bearing retainer is mainly used for wrapping all or part of the balls and moving along with the balls, and can play a role in isolating each ball and guiding the balls and keeping the balls in the bearing. The common installation method of the balls is that the retainer provided with the ball bayonet is placed on a tool, the balls are manually placed on the ball bayonet of the retainer one by one, then the balls are pressed into the ball bayonet by a tool pressing plate, and the balls are clamped by the contraction force of the ball bayonet; the positioning of the ball on the ball bayonet is manually completed by workers, so that the production efficiency is low; meanwhile, the manual operation of the small balls is very inconvenient, the situation of less or more balls is easy to occur, the surface of the ball is easy to damage when the large balls are manually placed, and the product quality cannot be guaranteed to be uniform.
Disclosure of Invention
The invention aims to provide a ball mounting device of a bearing retainer, which solves the problems that the ball mounting on the existing retainer needs to be manually completed and the production efficiency is low by utilizing the matching of a fixed disc, a rotating disc and a guide disc and a lower die provided with a channel and a fixed trough; the channel and the fixed silo on the lower mould are utilized to guide and position the ball, so that the ball is accurately installed and positioned, the ball is controlled to be discharged through rotation of the rotating disc, the problems that the ball is placed less or more and the ball is damaged are solved, and the product quality is effectively improved.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a ball mounting device of a bearing retainer, which comprises an upper die mechanism and a lower die;
the upper die mechanism comprises a blanking device and an upper pressing die;
the blanking device comprises a fixed shaft and a connecting shaft; a fixed disc and a guide disc are fixedly connected to the circumferential side surface of one end of the fixed shaft; the peripheral side surface of one end of the fixed shaft is rotatably connected with a rotating disc; an elastic part is in clearance fit with the peripheral side surface at one end of the fixed shaft;
a plurality of first through holes are uniformly distributed in a circular manner on one surface of the fixed disc; the upper surface of the fixed disc is fixedly connected with a blanking pipe relative to the position of the first through hole;
a plurality of second through holes are uniformly distributed on the surface of the guide disc in a circular manner;
a plurality of material guide holes are uniformly distributed on the surface of the rotating disc in a circular manner; the circumferential side surface of the rotating disc is fixedly connected with a toothed ring; a connecting hole is formed in one surface of the rotating disc; the inner side surface of the connecting hole is rotationally connected with the peripheral side surface of the fixed shaft;
the gear ring is connected with a motor through a gear;
a blind hole is formed in one end face of the connecting shaft; the inner side surface of the blind hole is in sliding fit with the peripheral side surface of the fixed shaft; the connecting shaft is fixedly connected with the upper pressing die;
the upper pressing die is of a barrel-shaped structure; a through hole is formed in the position, corresponding to the first through hole, of one surface of the upper pressing die; the lower surface of the upper pressing die is provided with a plurality of arc notches;
the inner side surface of the through hole is in clearance fit with the peripheral side surface of the blanking pipe;
the upper surface of the lower die is provided with a channel corresponding to the second through hole; the upper surface of the lower die is provided with an annular channel; and a fixed trough is arranged on the inner bottom surface of the annular channel relative to the position of the arc-shaped notch.
Furthermore, a notch and a first connecting hole are formed in one surface of the fixed disc; the inner surface of the first connecting hole is fixedly connected with the peripheral side surface of the fixed shaft.
Furthermore, a second connecting hole is formed in one surface of the guide disc; the second connecting hole is fixedly connected with the peripheral side face of the fixed shaft.
Further, the inner bottom surface of the channel is obliquely arranged; the channel is communicated with the fixed trough.
Furthermore, the position of the motor relative to the notch is fixedly connected with the upper surface of the fixed disc.
Furthermore, the upper surface of the upper pressing die is provided with a heat dissipation hole corresponding to the notch position.
The invention has the following beneficial effects:
1. the invention realizes the automatic installation of the ball and effectively improves the production efficiency.
2. According to the invention, the ball is guided and positioned through the channel and the fixed trough on the lower die, and the discharging is controlled through the rotation of the rotating disc, so that the situations of less or more balls and ball damage are avoided, and the product quality is effectively improved.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a ball mounting device for a bearing cage according to the present invention;
FIG. 2 is a schematic structural view of an upper die mechanism;
FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;
FIG. 4 is a schematic structural view of a blanking device;
FIG. 5 is a schematic structural view of a fixing plate;
FIG. 6 is a schematic structural view of a guide plate;
FIG. 7 is a schematic view of the structure of the rotary disk;
FIG. 8 is a schematic structural view of an upper die and a connecting shaft;
FIG. 9 is a schematic bottom view of the structure of FIG. 8;
FIG. 10 is a schematic structural view of a lower mold;
FIG. 11 is a top view of the structure of FIG. 10;
FIG. 12 is a cross-sectional view taken at B-B of FIG. 11;
in the drawings, the components represented by the respective reference numerals are listed below:
1-an upper die mechanism, 2-a lower die, 10-a blanking device, 11-an upper pressing die, 101-a fixed shaft, 102-a connecting shaft, 103-a fixed disc, 104-a guide disc, 105-a rotating disc, 106-an elastic piece, 107-a motor, 201-a channel, 202-an annular channel, 203-a fixed trough, 1021-a blind hole, 1031-a first through hole, 1032-a blanking pipe, 1033-a notch, 1034-a first connecting hole, 1041-a second through hole, 1042-a second connecting hole, 1051-a guide hole, 1052-a toothed ring, 1053-a connecting hole, 1101-a through hole, 1102-a circular arc notch and 1103-a radiating hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "opening", "upper", "lower", "side", "bottom", "middle", "peripheral", "inner", "thickness", and the like, indicate an orientation or positional relationship, merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
The invention relates to a ball mounting device of a bearing retainer, which comprises an upper die mechanism 1 and a lower die 2 as shown in figure 1;
the upper die mechanism 1 comprises a blanking device 10 and an upper pressing die 11;
as shown in fig. 2 to 4, the blanking device 10 includes a fixed shaft 101 and a connecting shaft 102; a fixed disc 103 and a guide disc 104 are fixedly connected to the peripheral side surface of one end of the fixed shaft 101; a rotating disc 105 is rotatably connected to the peripheral side surface of one end of the fixed shaft 101; an elastic member 106 is fitted to a circumferential side surface of one end of the fixing shaft 101 with a gap, and the elastic member 106 is preferably a spring;
as shown in fig. 2-5, a notch 1033 and a first connection hole 1034 are formed on one surface of the fixing plate 103; the inner surface of the first connection hole 1034 is fixedly connected with the peripheral side surface of the fixed shaft 101, and the fixed disk 103 can be fixed on the fixed shaft 101 in a welding or interference fit mode; first through holes 1031 with the same number are uniformly distributed on one surface of the fixed disk 103 in a circular manner according to the number of the balls of the processed bearing; a discharging pipe 1032 is fixedly connected to the upper surface of the fixed disk 103 at a position corresponding to the first through hole 1031; the discharging pipe 1032 is connected with a hopper for storing the balls, so that the balls can automatically fall into the first through hole 1031 of the fixed disk 103 through the discharging pipe 1032 under the action of gravity; the inner diameters of the blanking tube 1032 and the first through hole 1031 are smaller than twice of the diameter of the ball, so that only one ball can pass each time, and the accuracy of ball blanking is facilitated;
as shown in fig. 2 to 4 and 6, a second coupling hole 1042 is formed on one surface of the guide plate 104; the second connecting hole 1042 is fixedly connected with the peripheral side surface of the fixed shaft 101, and the guide disc 104 can be fixed on the fixed shaft 101 in a welding or interference fit mode; second through holes 1041 are uniformly distributed in a circular manner on one surface of the guide disc 104, the size and the number of the second through holes 1041 are equal to those of the first through holes 1031, and the second through holes 1041 and the first through holes 1031 are arranged in a staggered manner;
as shown in fig. 2, 4 and 7, the rotary disk 105 is disposed between the fixed disk 103 and the guide disk 104, and the upper surface and the lower surface of the rotary disk 105 are respectively in sliding engagement with the lower surface of the fixed disk 103 and the upper surface of the guide disk 104; a connecting hole 1053 is formed on one surface of the rotating disc 105; the inner side surface of the connecting hole 1053 is rotationally connected with the peripheral side surface of the fixed shaft 101 and can be rotationally connected through matching of a bearing; material guiding holes 1051 are uniformly distributed on one surface of the rotating disc 105 in a circular manner, the size of the material guiding holes 1051 is equal to the inner diameter of the first through hole 1031, the material guiding holes are opposite to the positions of the first through hole 1031, and meanwhile, the thickness of the rotating disc 105 is equal to the diameter of the ball bearings; a toothed ring 1052 is fixedly connected to the peripheral side surface of the rotating disc 105; the gear ring 1052 is connected with a motor 107 through a gear; the motor 107 is a stepping motor, so that the rotation angle can be accurately controlled; the motor 107 is arranged on the upper surface of the fixed disk 103 at a position opposite to the notch 1033, and the notch 1033 is arranged to facilitate the adjustment of the position of the motor 107 so as to adjust the degree of engagement of the gear with the toothed ring 1052;
as shown in fig. 2-7, when the material guiding hole 1051 corresponds to the first through hole 1031, the balls fall into the material guiding hole 1051 through the discharging tube 1032 and the first through hole 1031 under the action of gravity, and the motor 107 drives the gear engaged with the gear ring 1052 to rotate, so as to drive the rotating disc 105 to rotate, and since the thickness of the rotating disc 105 is equal to the diameter of the balls, it is ensured that only one ball can be moved per rotation; when the rotating disc 105 rotates to the position where the material guiding hole 1051 corresponds to the second through hole 1041, the ball falls into the second through hole 1041 under the action of gravity;
wherein, the fixed disc 103, the guiding disc 104 and the rotating disc 105 can be made of metal material or plastic plate material, such as stainless steel plate or PE plastic plate or PTFE plate; the plastic plate material can effectively save the production cost;
as shown in fig. 8 and 9, a blind hole 1021 is formed on one end face of the connecting shaft 102; the inner side surface of the blind hole 1021 is in sliding fit with the peripheral side surface of the fixed shaft 101; the connecting shaft 102 and the upper die 11 can be fixedly connected by welding or bolts; one end of the connecting shaft 102 is connected with a downward pressing driving mechanism, such as an air cylinder and a hydraulic cylinder;
the upper pressing die 11 is of a barrel-shaped structure; a through hole 1101 is formed on one surface of the upper die 11 at a position corresponding to the first through hole 1031; the inner side surface of the through hole 1101 is in clearance fit with the peripheral side surface of the blanking tube 1032, so that the blanking tube 1032 can penetrate through the upper pressing die 11 to be connected with the fixed disk 103;
the lower surface of the upper pressing die 11 is provided with an arc notch 1102 corresponding to a ball bayonet on the bearing retainer; the upper surface of the upper pressing die 11 is provided with heat dissipation holes 1103 at positions corresponding to the notches 1033, the heat dissipation holes 1103 facilitate heat dissipation of the motor 107, and meanwhile, the upper pressing die 11 is prevented from touching the motor 107 in the pressing process;
as shown in fig. 10-12, a channel 201 is formed on the upper surface of the lower mold 2 opposite to the second through hole 1041; therefore, the balls falling into the second through holes 1041 continuously fall into the corresponding channels 201, the inner bottom surfaces of the channels 201 are arranged in an inclined manner, so that the balls can conveniently fall off, the inner bottom surfaces of the channels 201 can adopt a plane or arc surface structure, preferably an arc surface structure, so that the falling process of the balls is more stable; the upper surface of the lower die 2 is provided with an annular channel 202, and the annular channel 202 corresponds to the upper pressing die 11; a fixed trough 203 is arranged on the inner bottom surface of the annular channel 202 corresponding to the arc notch 1102, and meanwhile, the channel 201 is communicated with the fixed trough 203, so that the ball can slide into the fixed trough 203 through the channel 201; the fixed trough 203 adopts an arc surface to facilitate the positioning of the bearing retainer and the balls; meanwhile, the number of the arc notches 1102 and the fixed material groove 203 is equal to that of the balls of the processed bearing, and the arc notches correspond to the ball bayonets of the bearing retainer.
One specific application of this embodiment is: the connecting shaft 102 starts to move downwards under the action of the driving mechanism to drive the upper die mechanism 1 to move downwards, when the lower die 2 is close to, the guide disc 104 is in contact with the upper surface of the lower die 2, the blanking device 10 is buffered under the action of the elastic piece 106 and can enable the guide disc 104 to press the lower die 2 all the time, when the guide disc 104 is in contact with the upper surface of the lower die 2, the driving mechanism stops moving downwards by utilizing a travel switch or a proximity switch to feed back a signal, and simultaneously the motor 107 is controlled to rotate by a corresponding angle to drive the rotating disc 105 to rotate to move the balls passing through the first through hole 1031 and the blanking pipe 1032 into the second through hole 1041, because the second through hole 1041 is correspondingly communicated with the channel 201, the balls slide from the channel 201 to a ball bayonet on a bearing retainer placed in the fixed channel 203, the driving mechanism continues to press downwards, and because the fixed shaft 101 is in sliding fit with the connecting, the upper pressing die 11 continues to press downwards to be matched with the lower die 2 to punch and rivet the bearing retainer, and the balls are clamped by using the contraction force of the ball bayonet on the bearing retainer, so that the balls are arranged in the retainer.
The invention realizes the automatic installation of the ball and effectively improves the production efficiency; the ball is guided and positioned through the channel on the lower die and the fixed trough, the discharging is controlled through the rotation of the rotating disc, the situation that the ball is placed less or more and the ball is damaged is avoided, and the product quality is effectively improved.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (6)
1. The utility model provides a bearing retainer ball installation device which characterized in that: comprises an upper die mechanism (1) and a lower die (2); the upper die mechanism (1) comprises a blanking device (10) and an upper pressing die (11);
the blanking device (10) comprises a fixed shaft (101) and a connecting shaft (102); a fixed disc (103) and a guide disc (104) are fixedly connected to the peripheral side surface of one end of the fixed shaft (101); a rotating disc (105) is rotatably connected to the peripheral side surface of one end of the fixed shaft (101); an elastic piece (106) is in clearance fit with the peripheral side surface of one end of the fixed shaft (101);
the rotating disc (105) is arranged between the fixed disc (103) and the guide disc (104);
a plurality of first through holes (1031) are uniformly distributed on one surface of the fixed disc (103) in a circular manner; the upper surface of the fixed disc (103) is fixedly connected with a discharging pipe (1032) relative to the position of the first through hole (1031);
a plurality of second through holes (1041) are uniformly distributed on one surface of the guide disc (104) in a circular manner;
a plurality of material guide holes (1051) are uniformly distributed on the surface of the rotating disc (105) in a circular manner; a toothed ring (1052) is fixedly connected to the peripheral side surface of the rotating disc (105); one surface of the rotating disc (105) is provided with a connecting hole (1053); the inner side surface of the connecting hole (1053) is rotationally connected with the peripheral side surface of the fixed shaft (101);
the gear ring (1052) is connected with a motor (107) through a gear;
a blind hole (1021) is formed in one end face of the connecting shaft (102); the inner side surface of the blind hole (1021) is in sliding fit with the peripheral side surface of the fixed shaft (101); the connecting shaft (102) is fixedly connected with the upper pressing die (11);
the upper pressing die (11) is of a barrel-shaped structure; a through hole (1101) is formed in one surface of the upper pressing die (11) corresponding to the position of the first through hole (1031); the lower surface of the upper pressing die (11) is provided with a plurality of arc notches (1102);
the inner side surface of the through hole (1101) is in clearance fit with the peripheral side surface of the blanking pipe (1032);
a channel (201) is formed in the position, opposite to the second through hole (1041), of the upper surface of the lower die (2); the upper surface of the lower die (2) is provided with an annular channel (202); and a fixed trough (203) is arranged on the inner bottom surface of the annular channel (202) corresponding to the arc notch (1102).
2. A bearing cage ball mounting assembly as claimed in claim 1 wherein said mounting plate (103) has a surface with a notch (1033) and a first connection hole (1034); the inner surface of the first connecting hole (1034) is fixedly connected with the peripheral side surface of the fixed shaft (101); the notch (1033) and the first connecting hole (1034) penetrate through the upper surface and the lower surface of the fixed disc (103).
3. A bearing cage ball mounting apparatus as set forth in claim 1 wherein said pilot disc (104) is formed with a second connecting hole (1042) in one surface thereof; the second connecting hole (1042) is fixedly connected with the peripheral side face of the fixed shaft (101); the second connecting holes (1042) penetrate through the upper surface and the lower surface of the guide disc (104).
4. A bearing cage ball mounting arrangement as claimed in claim 1 wherein the inner bottom surface of the channel (201) is inclined; the channel (201) is communicated with a fixed trough (203).
5. A bearing cage ball mounting arrangement as set forth in claim 1 wherein the motor (107) is fixedly attached to the upper surface of the stationary plate (103) at a location opposite the slot (1033).
6. A bearing retainer ball mounting apparatus in accordance with claim 1 wherein the upper die (11) has heat dissipating holes (1103) formed in the upper surface thereof at positions corresponding to the notches (1033).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810462432.2A CN108561445B (en) | 2018-05-15 | 2018-05-15 | Ball mounting device for bearing retainer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810462432.2A CN108561445B (en) | 2018-05-15 | 2018-05-15 | Ball mounting device for bearing retainer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108561445A CN108561445A (en) | 2018-09-21 |
| CN108561445B true CN108561445B (en) | 2020-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810462432.2A Expired - Fee Related CN108561445B (en) | 2018-05-15 | 2018-05-15 | Ball mounting device for bearing retainer |
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| CN (1) | CN108561445B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111059161B (en) * | 2019-12-24 | 2021-03-16 | 沈阳建筑大学 | Metal bearing assembling mechanism for improving assembling quality and assembling precision |
| CN113944697B (en) * | 2021-10-22 | 2023-08-01 | 宁波大学 | Automatic installation device of universal ball bearing |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005291231A (en) * | 2004-03-31 | 2005-10-20 | Koyo Seiko Co Ltd | Assembling method of double row tapered roller bearing device |
| JP2013253647A (en) * | 2012-06-07 | 2013-12-19 | Jtekt Corp | Method of manufacturing wheel bearing device, and wheel bearing device |
| CN203348354U (en) * | 2013-07-08 | 2013-12-18 | 吴江市得可利纺织品有限公司 | Bearing steel ball charging library device |
| CN106640992B (en) * | 2016-11-14 | 2019-05-17 | 浙江兆丰机电股份有限公司 | A kind of taper roller tier array machine |
| CN206600371U (en) * | 2017-01-20 | 2017-10-31 | 宁夏菲斯克汽车轮毂轴承有限公司 | A kind of automobile hub bearing retainer pulping apparatus |
| CN207349284U (en) * | 2017-08-14 | 2018-05-11 | 江苏沙龙机电科技有限公司 | Retainer press fitting steel ball mechanism |
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2018
- 2018-05-15 CN CN201810462432.2A patent/CN108561445B/en not_active Expired - Fee Related
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| CN108561445A (en) | 2018-09-21 |
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