CN105615692B - Milling apparatus and its manufacturing method - Google Patents
Milling apparatus and its manufacturing method Download PDFInfo
- Publication number
- CN105615692B CN105615692B CN201511021368.7A CN201511021368A CN105615692B CN 105615692 B CN105615692 B CN 105615692B CN 201511021368 A CN201511021368 A CN 201511021368A CN 105615692 B CN105615692 B CN 105615692B
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- Prior art keywords
- bearing
- stack shell
- milling apparatus
- knife
- rotation axis
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Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J42/00—Coffee mills; Spice mills
- A47J42/22—Coffee mills; Spice mills having pulverising beaters or rotary knives
- A47J42/28—Beaters or knives
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J42/00—Coffee mills; Spice mills
- A47J42/38—Parts or details
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Food Science & Technology (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Crushing And Pulverization Processes (AREA)
Abstract
This application provides a kind of milling apparatus, it includes integrated stack shell, rotation axis, outer knife and interior knife, rotary shaft hole is machined in the stack shell, the rotary shaft hole is processed further mutually concentric first axle bearing bore, second bearing hole and grinding tool bore, the rotation axis is rotatably coupled to the stack shell by the clutch shaft bearing and second bearing being located at respectively in first axle bearing bore and second bearing hole, one end of rotation axis is connected with locking nut, the outer knife is set in the grinding tool bore, the interior knife is set on the other end of the rotation axis, so that the interior knife and the outer knife cooperate to realize grinding.In the device, several axis holes are integrated being arranged in integrated stack shell, thus greatly improve concentricity therebetween.
Description
Technical field
This application involves a kind of milling apparatus and its manufacturing method, and a kind of more particularly to grinding for coffee bean is set
Standby and its manufacturing method.
Background technology
One group of the usual two pieces of the grinding knife of common milling apparatus, relatively rotates with respect to each other in this field, completes such as coffee
The grinding work of the raw materials such as beans.And the milling apparatus of such as coffee bean grinder etc is very high to grinding quality requirement, this requires
There is very high concentricity between grinding knife.
The dimension chain between the grinding knife of obtainable milling apparatus (hand or electronic) (adds in part currently on the market
In work or machine assembling process, the sealing size group formed is arranged by the size interknited is end to end in certain sequence) very
Long, so as to which concentricity is very big, the requirement to assembly precision is very high；Particularly in stress or vibrations, concentricity easily drops
It is low.
So as to need a kind of milling apparatus that can fundamentally improve concentricity.
The content of the invention
The present invention relates to a kind of milling apparatus with integrated stack shell, and manufacture and assembling are simple, of low cost, and
Concentricity is substantially increased compared with existing equipment, and durability is strong.
On the one hand, a kind of milling apparatus is provided, including integrated stack shell, rotation axis, outer knife and interior knife, the cylinder
Mutually concentric first axle bearing bore, second bearing hole and grinding tool bore, institute are formed with by mechanical processing or casting in body
Rotation axis is stated to be rotatably coupled by the clutch shaft bearing and second bearing being respectively located in first axle bearing bore and second bearing hole
To the stack shell, one end of the rotation axis is provided with locking nut to limit the axial movement of rotation axis, and the outer knife is set
It puts in the grinding tool bore, the interior knife is set on the other end of the rotation axis so that the interior knife and described outer
Knife cooperates to realize grinding.In the device, several axis holes are integrated being arranged in integrated stack shell, thus greatly improve
Concentricity therebetween.
According to preferred embodiment, wherein the stack shell is divided into bearing linkage section, cavity segment and grinding knife linkage section according to function,
The bearing linkage section is provided with first and second bearing hole, and the cavity segment is described for accommodating raw material to be ground
Grinding knife linkage section is provided with the grinding tool bore.Thus three major functions of milling apparatus are integrated in single stack shell
Section, is simple to manufacture and ensures batch micro operations precision.
According to further preferred embodiments, wherein the bearing linkage section include being communicated on periphery the cavity segment with
In the plup inlet that raw material enters.The plup inlet can be manufactured into each according to actual needs for the entrance of the raw material during grinding
Kind form.
According to preferred embodiment, wherein the clutch shaft bearing and second bearing are rolling bearings or plain bearings.
According to preferred embodiment, the locking direction of the locking nut with when the milling apparatus is in work described in
The direction of rotation of rotation axis is opposite.
According to preferred embodiment, wherein the milling apparatus is manually or electrically milling apparatus, and rotation axis is described
One end is also associated with rotation handle or motor.The milling apparatus is used suitable for family, and the advantage in cost.It is alternative
Ground, milling apparatus can be automatic grinding equipment, and wherein rotation axis is connected to motor.
Optionally, wherein the bottom of the milling apparatus is socketed with powder cup for accommodating ground raw material.The powder cup
Size can set as needed, and can be substituted using containing tube.
Optionally, spring is cased at the position between the bearing hole and the interior knife in the rotation axis, and
Adjusting knob is installed for adjusting institute at the other end opposite with the spring of the interior knife in the rotation axis
Interior knife is stated in axial position.This feature is used for the adjusting of internal knife, to realize the adjusting to fineness of grind.
According to preferred embodiment, all parts of the stack shell are to be formed using cutting and/or casting technique.It is such to add
Work technique further ensures machining accuracy.
According to preferred embodiment, the milling apparatus is coffee bean grinding equipment.It is only a kind of exemplary application neck
Domain, milling apparatus of the invention can also be used to grind raw material in addition, such as soybean, pepper etc..
On the other hand, it is also proposed that a kind of method for manufacturing the stack shell for milling apparatus comprises the following steps：
Integrated stack shell is provided；
Centre bore is processed in the stack shell；
Then the centre bore is processed further, to form concentric first axle bearing bore, second bearing hole and grinding tool bore；
Then the position between the bearing hole and grinding tool bore processes raw material cavity；And
Plup inlet is processed beside the bearing hole to connect the raw material cavity.
Integrated stack shell be this method provide for milling apparatus so that the grinding knife of milling apparatus has very high concentric
Degree.
According to preferred embodiment, further included before the step of cutting centre bore in the stack shell：
The outer surface of the stack shell is cut to form cylindrical surface, using the positioning datum as following process.This feature can be into
One step improves the concentricity of the grinding component manufactured according to this method.
On the other hand, it has been proposed that a kind of method for manufacturing milling apparatus, comprises the following steps：
The stack shell that method as discussed above makes is provided；Outer knife is fixedly mounted in the grinding tool bore of the stack shell；It will
Interior knife installation is on the rotary shaft；Assembled rotating shaft assembly is loaded onto into second bearing, is then inserted into stack shell from one end of stack shell,
To ensure in second bearing hole that the second bearing is fitted on the stack shell；In the other end of the stack shell, by clutch shaft bearing
In the rotation axis and it is positioned in the first axle bearing bore, then against the clutch shaft bearing installation locking nut.
The manufacturing method is simple to manufacture, of low cost, and with very high practicability.
It is further comprising the steps of according to preferred embodiment：
Before the interior knife is installed, helical spring is attached to rotation axis against the boss being present on rotation axis stage casing
On, after the interior knife is installed, by adjusting knob against the interior knife in the rotation axis.
It is further comprising the steps of according to preferred embodiment：Handle will be rotated to be mounted at the other end of the stack shell
Rotation axis at.
According to preferred embodiment, wherein the at one end in the stack shell installs powder cup, after receiving grinding
Raw material.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the present invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Embodiment.It should be appreciated that embodiment described below is only used for explaining the purpose of the present invention, do not form to the present invention's
The limitation of scope.And it will be appreciated that attached drawing was not necessarily to scale, some opposite components may be exaggerated to dash forward
Go out the innovation of the display present invention.
Fig. 1 shows the cross-sectional view of the structure of milling apparatus according to the present invention；
Fig. 2 shows the sectional view of the integrated stack shell in milling apparatus according to the present invention；
Fig. 3 shows the top visual angle of integrated stack shell and the solid of bottom views in milling apparatus according to the present invention
Figure；
Fig. 4 shows a kind of schematic diagram of example use state of milling apparatus according to the present invention；
Fig. 5 shows the method for manufacturing the stack shell of milling apparatus according to the present invention；And
Fig. 6 shows the manufacturing method of milling apparatus according to the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
The composition of the milling apparatus of the present invention is explained below in conjunction with Fig. 1 and Fig. 2.Wherein Fig. 1 shows according to the present invention
The cross-sectional view of the structure of milling apparatus, and Fig. 2 shows the sectional view of the integrated stack shell in milling apparatus according to the present invention.
It can be seen from figure 1 that milling apparatus generallys include integrated stack shell 1, rotation axis 2, outer knife 7 and interior knife 6 etc. mainly
Component.The integration stack shell 1 is to be integrally machined to be formed, and without dismountable separating component.For example, the stack shell is whole
It is made using a kind of material in stainless steel, aluminium alloy or any appropriate metal or nonmetallic materials etc..It is machined in stack shell 1
Rotary shaft hole is used for through rotation axis 2 (it can be apparent from fig. 2).
Mutually concentric first axle bearing bore 8, second bearing hole 9 and grinding tool bore are processed further in rotary shaft hole 2
10 (can be apparent from fig. 2).The position in each hole therein is not necessarily limited to the position shown on figure, and can be not separated
Carry on the back the various positions of the principle and spirit of the invention.The processing can be the techniques such as cutting, such as pass through numerically-controlled machine tool (CNC)
Deng.Certainly, can also be processed by the way of casting.As seen from Figure 2, stack shell 1 is divided into bearing linkage section A, sky according to function
Chamber section B and grinding knife linkage section C, middle (center) bearing linkage section A are provided with first and second bearing hole 8,9, and cavity segment B is used for
Raw material to be ground is accommodated, grinding knife linkage section C is provided with grinding tool bore 10.As seen from Figure 2, due to first axle bearing bore 8,
Two bearing holes 9 and grinding tool bore 10 are to process to be formed in integrated stack shell, and and the technique of any assembling is not required, therefore
It can ensure that the concentricity of three reaches very high level, and finally so that the fit precision between outer knife and interior knife is very high.
In a preferred embodiment, the quantity of the bearing hole, which differs, is set to two, can also be three or three with
On.
And according to preferred embodiment, two bearing holes and grinding tool bore are first processed in stack shell 1 and then processes use
In the cavity and the plup inlet 11 for pan feeding that accommodate raw material.This can further improve same between bearing hole and grinding tool bore
Heart degree.The diameter of the cavity is preferably than the diameter bigger of bearing hole, and it can be fitted as needed in axial length
Work as setting.It in addition, the cavity is not required, can be removed as needed, as long as ensureing that plup inlet can be communicated to
Grind tool bore.And the cavity is not required to be located in axial position between the bearing hole and the grinding tool bore, it can
Such as between two bearing holes.
Fig. 1 is returned again to, after assembling, rotation axis 2 by being located in first axle bearing bore 8 and second bearing hole 9 respectively
Clutch shaft bearing 4 and second bearing 5 are rotatably coupled to the stack shell 1.Rolling bearing or slip may be employed in bearing therein
The modes such as bearing.And outer knife 7 is set in the grinding tool bore 10, and the interior knife 6 is set in the rotation axis 2,
So that the interior knife and the outer knife cooperate to realize grinding.And keyway may be employed in the fixed form of outer knife and interior knife
Mode and/or other any appropriate modes.Such as flat key is set in tool bore is ground, and set in outer knife corresponding
Slot, or vice versa.In addition flat key in rotation axis is set, and slot is set in interior knife, or vice versa.And it is preferred that
Ground in order to ensure the fixation of outer knife in the axial direction, may be employed and consolidate outer knife via screw and pressing plate or other fastener means
It is scheduled on stack shell, to inhibit the axial movement of outer knife.
In addition, locking nut 12 is installed at the top of the rotation axis, to ensure the axial restraint of the rotation axis 2.
Preferably, direction of rotation of the locking direction of the locking nut 12 with rotation axis 2 at work is opposite.
Fig. 3 shows the top visual angle of integrated stack shell and the solid of bottom views in milling apparatus according to the present invention
Figure.The bearing linkage section A being wherein clearly visible from the stereogram of Fig. 3 in stack shell 1 and the plup inlet formed around it.This
For field technology personnel it should be appreciated that the quantity of the plup inlet is not limited to three shown in Fig. 3, quantity can be one
It is a, two, four or more.
Regulating device in the milling apparatus of the application is described below with reference to Fig. 1.Wherein in the rotation axis in axis
Helical spring 13 is provided at position between bearing bore and interior knife.The helical spring 13 is located at institute preferably against in rotation axis
The boss near bearing hole is stated to set.In addition, adjusting knob 14 is installed against the interior knife in the bottom of the rotation axis.It adjusts
Section knob 14 is connected through a screw thread and is coupled to rotation axis 2, and can realize moving up and down in the axial direction by rotating.And
Since interior knife 6 is moveable in the axial direction, so the adjustable interior knife 6 of rotation 14 is appropriate in the axial direction to be moved by controlling to adjust
It is dynamic, with the fit clearance between knife in adjusting 6 and outer knife 7, so as to fulfill the adjusting of fineness of grind.Certainly, people in the art
Member can save more than regulating device it should be appreciated that in the case of the milling apparatus that fineness of grind is not required to adjust, and
And the interior knife is fixedly connected in the rotation axis, i.e., is also fixed in the axial direction.
Fig. 4 shows a kind of schematic diagram of example use state of milling apparatus according to the present invention.Wherein set in grinding
Rotation handle 15 is further fixedly mounted at the top of standby rotation axis, to realize the function of hand-ground.Certainly, in electric grinding
In the case of, motor can also be directly or indirectly connected to the rotation axis.Further optionally, at the bottom of milling apparatus
Portion is provided with powder cup 16, the raw material that can be used for after storage grinding.It is of course also possible to use the storage devices of other forms is received
Receive grinding after raw material, such as containing tube etc..
The method for describing to manufacture the stack shell of milling apparatus according to the present invention below according to Fig. 5.This method includes following
Step：
501, provide integrated stack shell, the stack shell may be employed appropriate metal material cast or pass through by
Bulk raw cutting section is simultaneously further cut.Optionally, which can have cylindrical shape, and with the cylinder
Positioning datum of the shape as following process.
502, centre bore is cut in the stack shell, which may be used as rotary shaft hole.
503, the centre bore is further cut, to form concentric first axle bearing bore, second bearing hole and grinding knife
Hole.The processing sequence in more than hole is not fixed, can according to circumstances be changed.It is complete that numerically-controlled machine tool may be employed in the cutting
Into to improve precision as far as possible.
504, the position between the bearing hole and grinding tool bore processes raw material cavity and by the bearing hole
While plup inlet is processed to connect the raw material cavity.The order for the step of processing the raw material cavity and the plup inlet can be handed over
It replaces, in addition the procedure of processing of the raw material cavity is not essential, and can be saved.
Finally, can also have and other processing steps are carried out on the stack shell, such as add in the bottom of the stack shell
Work screw thread with connect optional powder cup and it is described grinding tool bore in process required keyway etc..
The manufacturing method of milling apparatus according to the present invention is described below with reference to Fig. 6.This method specifically includes following steps：
601, the stack shell made according to method as discussed above is provided.
602, outer knife is fixedly mounted in the grinding tool bore of the stack shell.The mode of keyway may be employed in the fixation,
Both such as keyway is set respectively in grinding tool bore and outer knife, then connected by flat key.Optionally, screw and pressure are passed through
The outer knife is further secured on stack shell by plate, to realize that stablizing for axial direction is motionless.
603, by the installation of interior knife on the rotary shaft.Optionally, which is fixedly attached to the rotation axis.The company of the two
Connect the mode that keyway equally may be employed in mode.According to alternative embodiment, the interior knife is not rotatable compared with the rotation axis,
But it is axially movable；And before the interior knife is installed, against the boss being present on rotation axis stage casing by helical spring
15 are attached in rotation axis 14, and afterwards, adjusting knob 18 is filled on the rotary shaft against interior knife.Adjusting knob 18 can be connected by screw thread
It is connected to the rotation axis.
604, assembled rotating shaft assembly is loaded onto into second bearing, then from one end of stack shell (i.e. bottom) insertion tube
Body, to ensure in second bearing hole that the second bearing is fixed on the stack shell.At this point, interior knife forms phase interworking with outer knife
The relation of conjunction.
605, in the other end (i.e. top) of the stack shell, clutch shaft bearing in the rotation axis and is fixed on
In the first axle bearing bore, then against the clutch shaft bearing installation locking nut.The locking nut preferably by left hand thread (i.e.
It is opposite with the direction of rotation of rotation axis) it is connected to rotation axis.
Optionally, 606 in the case where manufacturing hand-ground equipment, institute of the handle mounted on the stack shell will be rotated
It states at the rotation axis at the other end.In alternate embodiments, rotation axis is connected to motor.
Optionally, 607, powder cup is installed in the bottom end of the stack shell, for receiving the raw material after grinding.It is preferred that
O-ring is set between powder cup and stack shell, is tightly connected with realizing.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modifications, equivalent replacements and improvements are made should all be included in the protection scope of the present invention.It should note
Meaning, word ' including ' are not precluded from the presence in the unlisted element or step of claim.Word before element
' one ' or ' one ' be not precluded from the presence of multiple such elements.Some measures are recited in mutually different dependent mutually different
Simple fact do not indicate that the combination of these measures is consequently not used for improving.Any reference symbol in the claims should not
It is interpreted to limit scope.
Claims (11)
1. a kind of milling apparatus, including integrated stack shell, rotation axis, outer knife and interior knife, in the stack shell by mechanical processing or
Casting is formed with mutually concentric first axle bearing bore, second bearing hole and grinding tool bore, and the rotation axis passes through position respectively
Clutch shaft bearing and second bearing in first axle bearing bore and second bearing hole are rotatably coupled to the stack shell, the rotation
One end of axis is provided with locking nut to limit the axial movement of rotation axis, and the outer knife is set in the grinding tool bore,
The interior knife is set on the other end of the rotation axis so that the interior knife and the outer knife mutual cooperation are ground with realizing
Mill.
2. milling apparatus as described in claim 1, wherein the stack shell is divided into bearing linkage section, cavity segment and grinding according to function
Knife linkage section, the bearing linkage section are provided with first and second bearing hole, and the cavity segment is to be ground for accommodating
Raw material, the grinding knife linkage section are provided with the grinding tool bore.
3. milling apparatus as claimed in claim 2, wherein the bearing linkage section includes being communicated to the cavity segment on periphery
The plup inlet entered for raw material.
4. milling apparatus as described in claim 1, wherein the clutch shaft bearing and second bearing are rolling bearing or sliding axle
It holds.
5. milling apparatus as described in claim 1, wherein the locking direction of the locking nut is with working as at the milling apparatus
The direction of rotation of the rotation axis is opposite when in work.
6. milling apparatus as described in claim 1, wherein the milling apparatus is manually or electrically milling apparatus, and rotating
Described one end of axis is also associated with rotation handle or motor.
7. milling apparatus as claimed in claim 2, wherein in the rotation axis between the bearing hole and the interior knife
Position at be cased with spring, and be equipped in the rotation axis at the other end opposite with the spring of the interior knife
Adjusting knob is for the adjusting interior knife in axial position.
8. the milling apparatus as described in any one of claim 1-7, wherein the milling apparatus is for coffee bean or Hu
The milling apparatus of green pepper.
9. a kind of method for manufacturing the stack shell for milling apparatus, comprises the following steps：
Integrated stack shell is provided；
Centre bore is processed in the stack shell；
Then the centre bore is processed further, to form concentric first axle bearing bore, second bearing hole and grinding tool bore；
Then the position between the bearing hole and grinding tool bore processes raw material cavity；And
Plup inlet is processed beside the bearing hole to connect the raw material cavity.
10. method as claimed in claim 9, further included before the step of cutting centre bore in the stack shell：
The outer surface of the stack shell is cut to form cylindrical surface, using the positioning datum as following process.
11. a kind of method for manufacturing milling apparatus, comprises the following steps：
The stack shell that method according to claim 9 or 10 makes is provided；
Outer knife is fixedly mounted in the grinding tool bore of the stack shell；
By the installation of interior knife on the rotary shaft；
Assembled rotating shaft assembly is loaded onto into second bearing, then stack shell is inserted into from one end of stack shell, to ensure described second
Bearing is fitted into the second bearing hole on the stack shell；
In the other end of the stack shell, clutch shaft bearing in the rotation axis and is positioned in the first axle bearing bore,
Again against the clutch shaft bearing installation locking nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511021368.7A CN105615692B (en) | 2015-12-30 | 2015-12-30 | Milling apparatus and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511021368.7A CN105615692B (en) | 2015-12-30 | 2015-12-30 | Milling apparatus and its manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105615692A CN105615692A (en) | 2016-06-01 |
| CN105615692B true CN105615692B (en) | 2018-05-25 |
Family
ID=56031365
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511021368.7A Active CN105615692B (en) | 2015-12-30 | 2015-12-30 | Milling apparatus and its manufacturing method |
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| Country | Link |
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| CN (1) | CN105615692B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108354472A (en) * | 2018-03-31 | 2018-08-03 | 王永明 | A kind of electric coffee grinder |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110461174B (en) * | 2017-01-25 | 2023-01-24 | 香蕉兄弟有限责任公司 | Compact system for preparing personal smokable articles |
| CN106889910B (en) * | 2017-05-03 | 2019-02-12 | 郑益丽 | A kind of pepper grinder |
| GB2563820A (en) * | 2017-05-16 | 2019-01-02 | Nicholson Design Consultants Ltd | Bean grinder concentric |
| CN107581929A (en) * | 2017-10-24 | 2018-01-16 | 广东顺德潜龙工业设计有限公司 | Soybean grinder and coffee machine |
| CN108451393A (en) * | 2018-03-31 | 2018-08-28 | 王永明 | A kind of novel coffee mill |
| CN108784419B (en) * | 2018-06-12 | 2020-05-15 | 安徽科创新能源科技有限责任公司 | Pepper grinding disc |
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| CN204819115U (en) * | 2015-07-31 | 2015-12-02 | 宁波容大光电科技有限公司 | Grind spindle unit of ceramic lock pin hole |
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| US6705983B1 (en) * | 1999-04-09 | 2004-03-16 | Haemonetics Corporation | Compact centrifuge device and use of same |
| CN2572897Y (en) * | 2001-12-12 | 2003-09-17 | 湖南省新化长盛工程陶瓷有限责任公司 | Pepper grinder |
| CN101822498A (en) * | 2010-04-26 | 2010-09-08 | 广东新宝电器股份有限公司 | Stirrer mechanism for automatically adjusting concentricity and damping |
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| CN108354472A (en) * | 2018-03-31 | 2018-08-03 | 王永明 | A kind of electric coffee grinder |
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| Publication number | Publication date |
|---|---|
| CN105615692A (en) | 2016-06-01 |
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