CN108075609B - Stator and rotor assembly press machine and stator and rotor assembly method - Google Patents
Stator and rotor assembly press machine and stator and rotor assembly method Download PDFInfo
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- CN108075609B CN108075609B CN201711497771.6A CN201711497771A CN108075609B CN 108075609 B CN108075609 B CN 108075609B CN 201711497771 A CN201711497771 A CN 201711497771A CN 108075609 B CN108075609 B CN 108075609B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
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Abstract
The invention relates to the technical field of stator and rotor assembly, in particular to a stator and rotor assembly press and a stator and rotor assembly method, which are used for solving the problems of low assembly efficiency and complex assembly process caused by the fact that the existing stator and rotor assembly process needs to be overturned twice. The device comprises a first pressure head, a second pressure head and a carrier tool, wherein the first pressure head and the second pressure head are vertically arranged, and the carrier tool can move on a horizontal plane; the carrier tool is used for mounting the rotor assembly; a first ram for pressing a first bearing into the rotor assembly to form a first assembly and for pressing a second bearing into a second assembly; a second ram for pressing the stator assembly into the first assembly to form a second assembly. The stator and rotor assembling press machine provided by the invention has the advantages of higher efficiency and simple and easy assembling process.
Description
Technical Field
The invention relates to the technical field of stator and rotor assembly, in particular to a stator and rotor assembly press and a stator and rotor assembly method.
Background
In the prior art, regarding the assembly of the stator and the rotor of the EC/DC external rotor motor/fan, the shaft and the bearing adopt interference fit or transition fit which is a motor/fan difficult to be directly assembled manually, and the general structure is as shown in the figure, in the assembly state, the motor/fan comprises a rotor assembly, and a lower bearing, a lower wave washer, a stator assembly, an upper wave washer and an upper bearing which are sequentially sleeved on the rotor assembly from bottom to top, wherein the rotor assembly is hollow, the middle part is provided with a rotating shaft, and the periphery of the rotating shaft is provided with a carbon steel component. Wherein, the bight on stator module top side is provided with the cable and restraints, and the bottom sets up to the iron core part.
The assembly method is described in detail as follows:
1) the opening of the rotor component faces upwards, and the lower bearing is tightly pressed to the shaft end of the rotor;
2) the cable end of the stator assembly faces downwards, the iron core end faces upwards, and a lower wave washer is installed at the end part of the iron core;
3) turning the rotor assembly to make the opening face downwards, and sleeving the rotor assembly on the stator assembly in the step 2) to combine the stator assembly and the rotor assembly;
4) and (3) overturning the combined stator assembly and rotor assembly in the step 3), wherein the cable end of the stator assembly faces upwards, and the upper wave washer is sleeved on the rotor downwards.
5) The upper bearing is pressed into the rotor.
As can be seen from the above-mentioned assembly method, during the assembly process, there are inevitably two turning processes, the first turning is to turn the rotor assembly in 3), and the second turning is to turn the combined stator assembly and rotor assembly in 4).
In conclusion, the existing stator and rotor assembly method has the problems of low assembly efficiency and complex assembly process caused by the fact that the stator and rotor must be turned twice.
Disclosure of Invention
The invention aims to provide a stator and rotor assembly press and a stator and rotor assembly method, which are used for solving the problems of low assembly efficiency and complex assembly process caused by the fact that the existing stator and rotor assembly process needs to be overturned twice.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a stator and rotor assembly press machine comprises a first pressing head and a second pressing head which are vertically arranged, and a carrier tool which can move on a horizontal plane;
the carrier tool is used for loading the rotor assembly;
the first pressure head is used for pressing a first bearing into a first limit position of a rotating shaft in the rotor assembly to form a first assembly, and is also used for pressing a second bearing into a second limit position of the rotating shaft in a second assembly;
the second ram is used for pressing the stator assembly into the first assembly to form a second assembly.
Further, in the present invention,
the carrier tool can move between a first station and a second station;
when the carrier tool is located at a first station, the carrier tool is over against the first pressure head;
when the carrier tool is located at the second station, the carrier tool is over against the second pressure head.
Further, in the present invention,
the press machine further comprises a moving platform which is arranged below the carrier tool and used for driving the carrier tool to change between a first station and a second station.
Further, in the present invention,
the left limiting part close to the first pressure head side and the right limiting part close to the second pressure head side are arranged on the left side and the right side of the moving platform;
the front side and the rear side are provided with a rear limiting piece which ensures that the mobile platform is positioned at the first station and the second station in a line and a front limiting piece which can limit the mobile platform when the mobile platform is pulled back.
When the moving platform contacts the rear limiting part and the left limiting part, the carrier tool is located at a first station;
when the moving platform contacts the rear limiting part and the right limiting part, the carrier tool is located at a second station.
Further, in the present invention,
and a clamping jaw is arranged at the bottom of the second pressure head and used for clamping the stator assembly.
Further, in the present invention,
the clamping jaws grip or tension the stator assembly.
A stator-rotor assembly method comprising:
mounting a rotor assembly on the carrier tool and moving the rotor assembly to the position below the first pressure head;
a first ram pressing a first bearing into the rotor assembly to form a first assembly;
the carrier tool carries the first assembly to move below the second pressure head;
a second ram pressing the stator assembly into the first assembly to form a second assembly;
the carrier tool carries the second assembly to move below the first pressing head;
a first ram presses a second shaft into the second assembly.
Further, in the present invention,
and clamping the stator assembly by the clamping jaw arranged below the second pressure head, and pressing the stator assembly into the first assembly through the second pressure head to form a second assembly.
Further, in the present invention,
and before the stator assembly is pressed into the rotor assembly, the lower waveform gasket is adsorbed at the lower end of the stator assembly.
Further, in the present invention,
after placing the upper corrugated pad over the second assembly, a second shaft is pressed into the second assembly.
By combining the technical scheme, the invention can achieve the technical effects that:
the invention provides a stator and rotor assembly press machine which comprises a first pressure head, a second pressure head and a carrier tool, wherein the first pressure head and the second pressure head are vertically arranged, and the carrier tool can move on a horizontal plane; the carrier tool is used for mounting the rotor assembly; said first ram for pressing a first bearing into said rotor assembly to form a first assembly and for pressing a second bearing into a second assembly; the second ram is used for pressing the stator assembly into the first assembly to form a second assembly.
In the assembling process, the rotor assembly is installed on the carrier tool, and the carrier tool is moved to the position below the first pressure head. After the carrier tooling moves below the first ram, the first ram presses a first bearing into the rotor assembly to form a first assembly. After the first assembly is formed, the carrier tool carries the first assembly to move to the position below the second pressure head. And after the carrier tool moves to the position below the second pressure head, the first pressure head presses the second shaft into the second assembly, so that the stator and the rotor are assembled. The assembly process does not need to turn over the workpiece, so that the assembly efficiency is high, and the assembly process is simple and easy to form.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of an assembly structure of a stator and a rotor of an EC/DC outer rotor motor/fan in the prior art;
FIG. 2 is an exploded view of FIG. 1;
FIG. 3 is a schematic diagram of step 1 of assembling a stator and a rotor in the prior art (the opening of the rotor assembly is upward, and the lower bearing is pressed to the shaft end of the rotor);
FIG. 4 is a schematic diagram of step 2 of stator-rotor assembly in the prior art (cable end of stator assembly facing downward, core end facing upward, lower wave washer mounted at core end);
fig. 5 is a schematic diagram of step 3 of stator-rotor assembly in the prior art (the rotor assembly is flipped so that the opening faces downward, and the rotor assembly is sleeved on the stator assembly in (2) to combine the stator assembly and the rotor assembly);
fig. 6 is a schematic diagram of step 4 of stator-rotor assembly in the prior art (turning over the combined stator and rotor assembly of (3) with the cable end of the stator assembly facing up and the upper wave washer down on the rotor);
FIG. 7 is a schematic view of step 5 of stator-rotor assembly (pressing the upper bearing into the rotor) in the prior art;
FIG. 8 is a front view of a press provided in accordance with an embodiment of the present invention;
FIG. 9 is a side view of a press provided in accordance with an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a second ram in the press according to the embodiment of the present invention.
Icon: 1 a-a rotor assembly; 2 a-a lower bearing; 3 a-lower wave washer; 4 a-a stator assembly; 5 a-upper wave washer; 6 a-upper bearing; 100-a first ram; 200-a second ram; 300-a carrier tool; 400-a movable plate; 210-clamping jaw.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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 should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Embodiment 1 and embodiment 2 are described in detail below with reference to the accompanying drawings:
FIG. 1 is a schematic view of an assembly structure of a stator and a rotor of an EC/DC outer rotor motor/fan in the prior art; FIG. 2 is an exploded view of FIG. 1; FIG. 3 is a schematic diagram of step 1 of assembling a stator and a rotor in the prior art (the opening of the rotor assembly is upward, and the lower bearing is pressed to the shaft end of the rotor); FIG. 4 is a schematic diagram of step 2 of stator-rotor assembly in the prior art (cable end of stator assembly facing downward, core end facing upward, lower wave washer mounted at core end); fig. 5 is a schematic diagram of step 3 of stator-rotor assembly in the prior art (the rotor assembly is flipped so that the opening faces downward, and the rotor assembly is sleeved on the stator assembly in (2) to combine the stator assembly and the rotor assembly); fig. 6 is a schematic diagram of step 4 of stator-rotor assembly in the prior art (turning over the combined stator and rotor assembly of (3) with the cable end of the stator assembly facing up and the upper wave washer down on the rotor); FIG. 7 is a schematic view of step 5 of stator-rotor assembly (pressing the upper bearing into the rotor) in the prior art; FIG. 8 is a front view of a press provided in accordance with an embodiment of the present invention; FIG. 9 is a side view of a press provided in accordance with an embodiment of the present invention; fig. 10 is a schematic structural diagram of a second ram in the press according to the embodiment of the present invention.
Example 1
The embodiment provides a stator and rotor assembling press machine, which comprises a first pressing head 100 and a second pressing head 200 which are vertically arranged, and a carrier tool 300 which can move on a horizontal plane;
a carrier fixture 300 for mounting a rotor assembly;
a first ram 100 for pressing a first shaft into the rotor assembly to form a first assembly and for pressing a second shaft into a second assembly;
a second ram 200 for pressing the stator assembly into the first assembly to form a second assembly.
In the stator and rotor assembling press, the rotor assembly is mounted on the carrier tool 300 and the carrier tool 300 is moved to a position below the first ram 100. After the carrier tooling 300 moves below the first ram 100, the first ram 100 presses a first bearing into the rotor assembly to form a first assembly. After the first assembly is formed, the carrier tool 300 carries the first assembly to move under the second ram 200. After the carrier tool 300 moves below the second ram 200, the first ram 100 presses the second shaft into the second assembly, thereby completing the assembly of the stator and the rotor. The assembly process does not need to turn over the workpiece, so that the assembly efficiency is high, and the assembly process is simple and easy to form.
In addition, in the existing upper bearing press-in process, a special tool is additionally adopted, the upper bearing is pressed in by a press machine, the upper end face of the bearing needs to be aligned with the lower edge of a clamp spring groove of a shaft, the existing general assembly method can cause the problems that the bearing is positioned inaccurately, the waveform gasket is over-pressed or the subsequent clamp spring cannot be assembled and the like. The press machine in the embodiment does not need to adopt an additional special tool, so that the problems are avoided.
The carrier tool 300 is described in detail below:
the carrier tool 300 is specifically arranged below the first pressing head 100 and the second pressing head 200, can move in a horizontal plane, and forms a first station and a second station in the horizontal moving process of the carrier tool 300;
when the carrier tool 300 is at the first station, the carrier tool 300 is over against the first press head 100; when the carrier tool 300 is at the second station, the carrier tool 300 is directly opposite to the second ram 200. The top of the carrier tool 300 is used for fixing the rotor assembly, and the specific fixing manner may be, for example, interference fit, snap fit, etc., and of course, other fixing manners as long as the rotor assembly can be fixed should be within the scope of the present invention.
Further, in order to realize the movement of the carrier tool 300, a movable plate 400 is further disposed below the carrier tool 300, and the movable plate 400 is used for driving the carrier tool 300 to change between the first station and the second station.
Further, the movable plate 400 is moved by a force applying body such as a human hand, a cylinder, a robot arm, etc. For example, a first lead screw and a second lead screw, which are oppositely disposed and have opposite forces, are respectively disposed at both sides of the movable plate 400. Alternatively, a first electric cylinder and a second electric cylinder, which are oppositely disposed and have opposite forces, are respectively disposed at both sides of the movable plate 400.
Further, a first positioning block near the first ram 100 side and a second positioning block near the second ram 200 side are disposed at both sides of the movable plate 400, and when the movable plate 400 moves to abut against the first positioning block, the carrier tool 300 located above the movable plate 400 moves to the first station, that is, the carrier tool 300 moves to a position right below the first ram 100. When the movable plate 400 moves to abut against the second positioning block, the carrier tool 300 located above the movable plate 400 moves to the second station, that is, the carrier tool 300 moves to a position right below the second ram 200.
The shape and structure of the first ram 100 are described in detail below:
the first ram 100 can secure the first and second bearings, carry the first or second bearings downward until the first and second bearings are secured to the underlying workpiece. The first ram 100 may be fixed to the first bearing or the second bearing by magnetic attraction, or by a snap connection, or by other connection means that can perform a fixing function.
Further, in order to accomplish the ascending or descending of the first ram 100, a first driving member is provided above the first ram 100, and the first driving member applies a vertically downward driving force to the first ram 100. The first drive member may be, for example, a motor, which further may be a servo motor. The servo motor is further connected with a control mechanism for controlling the lowering speed of the first ram 100 and the like.
The shape and structure of the second ram 200 are described in detail below:
the second ram 200 is used to specify the stator assembly, and in particular the stator assembly is fixed by the clamping jaws 210, and the way in which the clamping jaws 210 fix the stator assembly may be, for example, a gripping or tensioning way. The way of fixing the stator assembly in the gripping principle is for example: be provided with three tongs, three tongs evenly arrange in stator module's periphery, the fixed stator module of power of embracing through three tongs. The way of fixing the stator assembly in a tensioned principle is for example: and the tensioning sleeve is arranged and extends into the stator assembly.
Further, the clamping jaws 210 are pneumatic clamping jaws 210, and the opening and closing and tightness of the pneumatic clamping jaws 210 are controlled pneumatically.
Example 2
The embodiment provides a stator and rotor assembling method, which specifically comprises the following steps:
s1: mounting a rotor assembly on the carrier tooling 300 and moving below the first ram 100;
s2: the first ram 100 presses a first bearing into the rotor assembly to form a first assembly;
s3: the carrier tool 300 carries the first assembly to move below the second ram 200;
s4: the second ram 200 presses the stator assembly into the first assembly to form a second assembly;
s5: the carrier tool 300 carries the second assembly to move under the first pressing head 100;
s6: the first ram 100 presses the second shaft into the second assembly.
Wherein S4 further includes: after clamping the stator assembly by the clamping jaws 210 arranged below the second pressing head 200, the stator assembly is pressed into the first assembly by the second pressing head 200 to form a second assembly.
In step S4, before the stator assembly is pressed into the rotor assembly, the lower wave washer is attached to the lower end of the stator assembly.
Wherein after step S6, i.e., after the upper corrugated pad is placed over the second assembly, the second shaft is pressed into the second assembly.
In the stator and rotor assembly method, during the assembly process, the rotor assembly is mounted on the carrier tool 300, and the carrier tool 300 is moved to a position below the first ram 100. After the carrier tooling 300 moves below the first ram 100, the first ram 100 presses a first bearing into the rotor assembly to form a first assembly. After the first assembly is formed, the carrier tool 300 carries the first assembly to move under the second ram 200. After the carrier tool 300 moves below the second ram 200, the first ram 100 presses the second shaft into the second assembly, thereby completing the assembly of the stator and the rotor. The assembly process does not need to turn over the workpiece, so that the assembly efficiency is high, and the assembly process is simple and easy to form.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A stator and rotor assembly method is characterized in that a stator and rotor assembly press is adopted, and the method comprises the following steps:
mounting a rotor assembly on the carrier tool and moving the rotor assembly to the position below the first pressure head;
a first ram pressing a first bearing into the rotor assembly to form a first assembly;
the carrier tool carries the first assembly to move below the second pressure head;
a second ram pressing the stator assembly into the first assembly to form a second assembly;
the carrier tool carries the second assembly to move below the first pressure head;
a first ram presses a second shaft into the second assembly.
2. The stator-rotor assembly method according to claim 1, wherein the stator assembly is pressed into the first assembly by the second ram after the stator assembly is clamped by a clamping jaw arranged below the second ram to form the second assembly.
3. The stator-rotor assembly method of claim 2, further comprising:
and before the stator assembly is pressed into the rotor assembly, the lower waveform gasket is adsorbed at the lower end of the stator assembly.
4. The stator-rotor assembly method of claim 3, further comprising:
after placing the upper corrugated pad over the second assembly, a second shaft is pressed into the second assembly.
5. The stator-rotor assembling method according to claim 1, wherein the stator-rotor assembling press comprises a first ram and a second ram which are vertically arranged, and a carrier tool which can move on a horizontal plane;
the carrier tool is used for loading the rotor assembly;
the first pressure head is used for pressing a first bearing into a first limit position of a rotating shaft in the rotor assembly to form a first assembly, and is also used for pressing a second bearing into a second limit position of the rotating shaft in a second assembly;
the second ram for pressing a stator assembly into the first assembly to form a second assembly;
the carrier tool can move between a first station and a second station;
when the carrier tool is located at a first station, the carrier tool is over against the first pressure head;
when the carrier tool is located at the second station, the carrier tool is over against the second pressure head.
6. The stator-rotor assembly method of claim 5, wherein the press further comprises a moving platform disposed below the carrier tool for moving the carrier tool between the first station and the second station.
7. The stator-rotor assembly method according to claim 6, wherein left and right sides of the moving platform are provided with a left stopper close to the first ram side and a right stopper close to the second ram side;
the front side and the rear side are provided with a rear limiting piece which ensures that the mobile platform is positioned at the first station and the second station in the same line and a front limiting piece which can limit when the mobile platform is pulled back;
when the moving platform contacts the rear limiting part and the left limiting part, the carrier tool is located at a first station;
when the moving platform contacts the rear limiting part and the right limiting part, the carrier tool is located at a second station.
8. Stator-rotor assembly method according to claim 5, characterized in that the second ram bottom is provided with clamping jaws for clamping the stator assembly.
9. A stator-rotor assembly method according to claim 8, wherein the jaws grip or tension the stator assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711497771.6A CN108075609B (en) | 2017-12-29 | 2017-12-29 | Stator and rotor assembly press machine and stator and rotor assembly method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711497771.6A CN108075609B (en) | 2017-12-29 | 2017-12-29 | Stator and rotor assembly press machine and stator and rotor assembly method |
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| Publication Number | Publication Date |
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| CN108075609A CN108075609A (en) | 2018-05-25 |
| CN108075609B true CN108075609B (en) | 2022-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201904694U (en) * | 2010-12-24 | 2011-07-20 | 东明机电（深圳）有限公司 | Special fixture for assembling rolling bearing on motor rotor shaft |
| KR101146593B1 (en) * | 2011-07-11 | 2012-05-17 | 일심정공 주식회사 | Electromotive appointment rotor manufacture system |
| CN204559333U (en) * | 2015-03-11 | 2015-08-12 | 镇江远东电讯电机有限公司 | A kind of rotor last item holds and gear frock |
| CN106239135A (en) * | 2016-08-30 | 2016-12-21 | 福建明鑫机器人科技有限公司 | Motor Automated assembly streamline |
| CN205945460U (en) * | 2016-07-20 | 2017-02-08 | 湖南佳林智能装备有限公司 | Electric motor rotor stator intelligent assembly equipment |
| CN206432863U (en) * | 2016-12-31 | 2017-08-22 | 苏州通锦精密工业股份有限公司 | A kind of rotor press-mounting detent mechanism of motor pressing machine |
| CN206432816U (en) * | 2017-01-19 | 2017-08-22 | 日电产伺服电机（常州）有限公司 | A kind of color printer images motor |
| CN207835307U (en) * | 2017-12-29 | 2018-09-07 | 杭州微光电子股份有限公司 | Rotor assembling pressure machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06225506A (en) * | 1994-02-10 | 1994-08-12 | Kokusan Denki Co Ltd | Assembly method of electric motor |
| JPH10271777A (en) * | 1997-03-25 | 1998-10-09 | Canon Precision Inc | Assembling device for motor provided with fluid bearing and assembling method |
| JP2003088074A (en) * | 2001-09-17 | 2003-03-20 | Nippon Densan Corp | Fan motor |
| CN201533224U (en) * | 2009-07-31 | 2010-07-21 | 重庆昆旺电子有限责任公司 | Micromotor stator press mounting equipment |
| CN201904694U (en) * | 2010-12-24 | 2011-07-20 | 东明机电（深圳）有限公司 | Special fixture for assembling rolling bearing on motor rotor shaft |
| KR101146593B1 (en) * | 2011-07-11 | 2012-05-17 | 일심정공 주식회사 | Electromotive appointment rotor manufacture system |
| CN204559333U (en) * | 2015-03-11 | 2015-08-12 | 镇江远东电讯电机有限公司 | A kind of rotor last item holds and gear frock |
| CN205945460U (en) * | 2016-07-20 | 2017-02-08 | 湖南佳林智能装备有限公司 | Electric motor rotor stator intelligent assembly equipment |
| CN106239135A (en) * | 2016-08-30 | 2016-12-21 | 福建明鑫机器人科技有限公司 | Motor Automated assembly streamline |
| CN206432863U (en) * | 2016-12-31 | 2017-08-22 | 苏州通锦精密工业股份有限公司 | A kind of rotor press-mounting detent mechanism of motor pressing machine |
| CN206432816U (en) * | 2017-01-19 | 2017-08-22 | 日电产伺服电机（常州）有限公司 | A kind of color printer images motor |
| CN207835307U (en) * | 2017-12-29 | 2018-09-07 | 杭州微光电子股份有限公司 | Rotor assembling pressure machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108075609A (en) | 2018-05-25 |
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