CN206780073U - A kind of cathode roll milling apparatus - Google Patents
A kind of cathode roll milling apparatus Download PDFInfo
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- CN206780073U CN206780073U CN201720684359.4U CN201720684359U CN206780073U CN 206780073 U CN206780073 U CN 206780073U CN 201720684359 U CN201720684359 U CN 201720684359U CN 206780073 U CN206780073 U CN 206780073U
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- seat
- cathode roll
- pressure
- bearing
- drive screw
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Abstract
The utility model discloses a kind of cathode roll milling apparatus；Belong to milling apparatus technical field；Technical points include being arranged on the bearing of cathode roll roll surface side, the bearing is provided with guide rail, the seat that slides axially is provided with guide rail, the seat that slides axially is threaded with drive screw, drive screw is connected with the first motor, drive screw is set with guide rail parallel, the fulcrum bearing being engaged with drive screw is respectively equipped with the both ends of bearing along its length, the drive screw is connected with displacement detecting mechanism；Slide axially to be movably set with seat and radially slide seat, radially slide seat and be connected with radial drive mechanism；Erecting bed is provided with seat is radially slided, the second motor is axially installed with along cathode roll on erecting bed, the power output shaft of the second motor is connected with abrasive wheel；The utility model aims to provide a kind of cathode roll milling apparatus rational in infrastructure, safe to use and easy to use；For grinding cathode roll.
Description
Technical field
A kind of copper foil production auxiliary equipment is the utility model is related to, more specifically, more particularly to a kind of cathode roll is used
Milling apparatus.
Background technology
In the foil process of electrolytic copper foil, cathode roll usage time to one timing or occur roll surface occur it is abnormal when, need
Cathode roll is hung into specific grinding roller room to be ground, it grinds needs and is repeated several times, and duration is up to several hours
To several days.
However, in the process of lapping of reality, it is still desirable to which artificial observation and manual control grinder come to cathode roll
It is ground.In actual production, it is found by the applicant that：Because the speed of grinding plate is slower, such as it is used to produce very low profile copper
During paper tinsel cathode roll, its speed is only at 4.2-5.5cm/min (0.7-0.92mm/s), under so low speed, manually very
Whether hardly possible identification grinding plate stops moving.Because the Ra of cathode roll is very low, once and grinding plate due to a variety of causes (such as
Fault, mechanical breakdown lamp) halt, abrasive wheel can be caused to the circumference (cathode roll keeps rotating) of cathode roll or connect
The overmastication of contact (when cathode roll stops operating), so as to cause the roll surface fatal harm to cathode roll.Similarly, if negative electrode
Roller is stopped operating suddenly, and abrasive wheel can be caused (to grind flat the axial direction (grinding plate keeps motion) of cathode roll or contact point
When platform is out of service) overmastication.And when operating personnel have found above-mentioned abnormal, roll surface has been damaged seriously, and heavy side is cloudy
Pole roller is directly scrapped；Slightly lighter need re-start a month car roller repeatedly, and roll surface is by turning not only its use
Life-span reduces 2/3rds, while the grinding repeatedly of about 1 month spends the expense that also spend hundreds of thousands member just to make cathode roll
Re-apply in production.
But in current document both domestic and external, do not occur caused by grinder grinds to production copper foil with cathode roll
Infringement report, and the apparatus and method for how preventing this infringement.
Utility model content
The purpose of this utility model is to be directed to above-mentioned the deficiencies in the prior art, there is provided a kind of rational in infrastructure, safe to use
The high and easy to use cathode roll milling apparatus of property.
What the technical solution of the utility model was realized in：A kind of cathode roll milling apparatus, including it is arranged on negative electrode
The bearing of roller roll surface side, the bearing are provided with guide rail, and the seat that slides axially, the seat that slides axially threaded connection are provided with guide rail
There is drive screw, drive screw is connected with the first motor, and drive screw is set with guide rail parallel, in bearing along its length
Both ends be respectively equipped with the fulcrum bearing being engaged with drive screw, the drive screw is connected with displacement detecting mechanism；In axial direction
It is movably set with sliding seat and radially slides seat, is radially slided seat and be connected with radial drive mechanism；It is provided with seat is radially slided
Erecting bed, the second motor, the power output axis connection of the second motor are axially installed with along cathode roll on erecting bed
There is abrasive wheel, the rotation testing agency being in contact with cathode roll is provided with erecting bed, pressure is provided with seat is radially slided and is examined
Device is surveyed, pressure-detecting device includes two pressure detecting wheels, and the axis of two pressure detecting wheels and abrasive wheel is located at same
On bar straight line and external diameter is identical；First motor, displacement detecting mechanism, radial drive mechanism, the second motor, rotation inspection
Survey mechanism and pressure-detecting device is connected with external control terminal.
In above-mentioned cathode roll milling apparatus, the displacement detecting mechanism is by being arranged on the of drive screw wherein one end
One belt pulley, the first speed probe being arranged on the bearing of belt pulley side, it is arranged on the first speed probe inductive axis
The second belt pulley and connect first and second belt pulley linkage belt composition；First speed probe connects with external control terminal
Connect.
In above-mentioned cathode roll milling apparatus, the radial drive mechanism is by being oppositely arranged a both ends that slide axially
Installing plate, at least two it is parallel and be disposed between two installing plates guide rod, be connected to radially slide seat with away from cloudy
Back-moving spring between the installing plate of pole roller and being connected to radially slides the driving between seat and installing plate away from cathode roll
Cylinder forms；The installing plate is parallel with the axis of cathode roll；It is described to radially slide seat activity and wear on the guide bar；Drive
Cylinder of taking offence is connected with external control terminal.
In above-mentioned cathode roll milling apparatus, it is described rotation testing agency by be arranged on erecting bed location-plate, hinge
The connecting plate that is connected on location-plate, it is arranged on the second speed probe of connecting plate free end close end and is arranged on the second rotating speed
Induction wheel composition on sensor sensing axle；Second speed probe is connected with external control terminal.
In above-mentioned cathode roll milling apparatus, the pressure-detecting device radially slides the detection of a side by being arranged on
Seat, it is arranged on the monitor station for detecting seat upper surface, the annular pressure testing agency being arranged on monitor station and is located in annular pressure
Force transmission shaft composition on tension detection mechanism；Two pressure detecting wheels are arranged on force transmission shaft both ends by bearing respectively；The pressure
Testing agency is connected with external control terminal.
In above-mentioned cathode roll milling apparatus, the pressure detection mechanism is pressed by the annular being arranged in monitor station through hole
Power bearing and the ring piezoelectric thin film sensor being sequentially stacked along annular pressure bearing inwall to center, falope ring, lead power
Ring and locating ring composition；The force transmission shaft is located in locating ring and is connected with locating ring interference；Set on annular pressure bearing
There is the annular mounting groove being adapted with ring piezoelectric thin film sensor；Ring piezoelectric thin film sensor through annular pressure bearing with
External control terminal connects.
In above-mentioned cathode roll milling apparatus, the diameter ratio of the drive screw and the second belt pulley is 1~3：1.
After the utility model uses said structure, the anglec of rotation of drive screw is detected by displacement detecting mechanism, so as to
Whether the judgement seat that slides axially moves；Detect whether cathode roll rotates by rotating testing agency.Judge by two angles, from
And the start and stop of milling apparatus are accurately realized, the excessive wear to cathode roll is avoided the occurrence of so as to increase unnecessary maintenance expenditures.
Further, in order to realize more accurate grinding, abrasive wheel is effectively guaranteed the grinding effect of cathode roll, grinding
Emery wheel side sets pressure-detecting device, pressure is detected by pressure-detecting device, so as to judge that abrasive wheel is ground to cathode roll
Mill dynamics, ensure grinding quality.
Brief description of the drawings
The utility model is described in further detail for embodiment in below in conjunction with the accompanying drawings, but does not form to this reality
With new any restrictions.
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the partial enlargement structural representation at A in Fig. 1；
Fig. 3 is the structural representation of pressure-detecting device in the utility model；
Fig. 4 is the partial enlargement structural representation located in Fig. 3.
In figure：Bearing 1, guide rail 2, the seat 3 that slides axially, drive screw 4, the first motor 5, fulcrum bearing 6, displacement detecting
Mechanism 7, the first belt pulley 7a, the first speed probe 7b, the second belt pulley 7c, linkage belt 7d, radially slide seat 8, radially
Drive mechanism 9, installing plate 9a, guide rod 9b, back-moving spring 9c, drive cylinder 9d, erecting bed 10, the second motor 11, grind
Emery wheel 12, rotation testing agency 13, location-plate 13a, connecting plate 13b, the second speed probe 13c, induction wheel 13d, pressure inspection
Survey device 14, pressure detecting wheel 14a, detection seat 14b, monitor station 14c, pressure detection mechanism 14d, force transmission shaft 14e, annular pressure
Bearing 14f, ring piezoelectric thin film sensor 14g, falope ring 14h, lead power ring 14i, locating ring 14j.
Embodiment
Refering to shown in Fig. 1 to Fig. 4, a kind of cathode roll milling apparatus of the present utility model, including it is arranged on cathode roll roller
The bearing 1 on surface side side, in the present embodiment, the speed that cathode roll rotates is 13-15 revs/min.The bearing 1 is provided with guide rail 2,
Guide rail 2 is parallel with cathode roll roll shaft, and the seat 3 that slides axially is provided with guide rail 2, and the seat 3 that slides axially is threaded with driving silk
Bar 4, drive screw 4 are connected with the first motor 5, and drive screw 4 be arranged in parallel with guide rail 2, in bearing 1 along its length
Both ends are respectively equipped with the fulcrum bearing 6 being engaged with drive screw 4.Using this structure, the seat 3 that slides axially is in drive screw 4,
Axially moved back and forth along cathode roll under the cooperation of one motor 5 and fulcrum bearing 6.In the present embodiment, slide axially seat 3
Transverse moving speed is：4.2-5.5cm/ minute.
Meanwhile the drive screw 4 is connected with displacement detecting mechanism 7；The displacement detecting mechanism 7 is by being arranged on driving silk
The first belt pulley 7a of the wherein one end of bar 4, the first speed probe 7b being arranged on the first belt pulley 7a sides bearing 1, set
Put the second belt pulley 7c on the first speed probe 7b inductive axis and connect first and second belt pulley 7a, 7c linkage belt
7d is formed.Certainly, belt pulley coordinates the linked manner of belt, can also replace with the conventional chain in this area or gear drive
Mode.Assuming that the pitch of drive screw 4 is Xmm, the work translational speed for the seat 3 that slides axially is Ymm/s；Drive screw 4
Rotating speed is：Y/X r/s；The belt pulley 7c of drive screw 4 and second diameter ratio is 1~3：1, be so advantageous to improve measurement essence
Degree, the second belt pulley 7c rotating speed are：Y×Z/X r/s.Such as drive screw 4 is sliding axially seat 3 just using the specification of M8 × 1
Normal translational speed is 0.9mm/s, and the rotating speed of drive screw 4 is：0.9r/s (54r/min), the second belt pulley 7c diameter use
6mm, it can thus be appreciated that：Second belt pulley 7c normal rotation speed is：1.2r/s.Due to bases such as existing infrared ray, ultrasonic waves
In the velocity sensor of measurement shift technique, its precision can reach millimetre-sized seldom, and reach millimetre-sized above-mentioned sensing
Its price of device type is also very expensive.It is measurement drive screw by the rate conversion for measuring axial sliding seat 3 using said structure
4 angular speed, then be easily achieved, and measures precisely, and the grinding to this area cathode roll, tool has an unexpected effect,
Abrasion of the abrasive wheel to cathode roll can accurately be ensured.
Slide axially to be movably set with seat 3 and radially slide seat 8, radially slide seat 8 and be connected with radial drive mechanism 9；
The radial drive mechanism 9 is parallel by the installing plate 9a, at least two for being oppositely arranged the both ends of seat 3 that slide axially and is arranged at intervals
Guide rod 9b between two installing plate 9a, it is connected to the reset radially slided between seat 8 and installing plate 9a away from cathode roll
Spring 9c and the drive cylinder 9d being connected between the installing plate 9a for radially sliding seat 8 and remote cathode roll are formed；The peace
Loading board 9a is parallel with the axis of cathode roll；It is described to radially slide the activity of seat 8 and be located on guide rod 9b.In grinding state
When, the elongation of drive cylinder 9d expansion links, now spring is in extended state, when drive cylinder 9d is stopped, radially slides
Seat 8 separates with cathode roll immediately in the presence of back-moving spring 9c.Found during experiment individually using drive cylinder 9d driving radial directions
Sliding seat 8 separates with cathode roll, and separation needs the regular hour, easily causes cathode roll and damages, therefore sets and reset bullet
Spring 9c can avoid such case.
Drive cylinder 9d driving radially slide seat 8 reset when, radially slide seat 8 done under the elastic reaction of back-moving spring it is past
Motion is returned, secondary collision may be caused to injure cathode roll, therefore, the seat 3 that the slides axially end face relative with radially sliding seat 8
The positioning ball and detent (not illustrated in positioning ball and detent figure) of mutual cooperation are respectively equipped with, when radially sliding seat
After 8 leave cathode roll suitable distance, radially slide seat 8 positioning ball and detent cooperation under carry out it is spacing.
Erecting bed 10 is provided with seat 8 is radially slided, the second driving electricity is axially installed with along cathode roll on erecting bed 10
Machine 11, the power output shaft of the second motor 11 are connected with abrasive wheel 12, and in the present embodiment, the velocity of rotation of abrasive wheel 12 is
150-200 revs/min, the abradant surface width of abrasive wheel 12 is 35-40mm, a diameter of 250-300mm, and 300 mesh are ground during grinding
Twice (one back and forth for once), 600 mesh abrasive wheels are ground twice, and 1000 mesh abrasive wheels are ground twice for wheel grinding.
The rotation testing agency 13 being in contact with cathode roll is provided with erecting bed 10.The rotation testing agency 13 is by setting
Put the location-plate 13a on erecting bed 10, the connecting plate 13b being hinged on location-plate 13a, be arranged on connecting plate 13b free ends
Second speed probe 13c of close end and the induction wheel 13d compositions being arranged on the second speed probe 13c inductive axis.Adopt
With this structure, induction wheel 13d contacts with cathode roll, detects whether induction wheel 13d rotates by the second speed probe 13c,
So as to judge whether cathode roll stops operating.Cathode roll normal rotation speed is 10-15r/min, and cathode roll is with induction wheel 13d's
Diameter ratio is U, and U value is generally 10-20, and induction wheel 13d rotating speed is 10U-15Ur/min, ensures rotation testing agency pair
The measurement accuracy of cathode roll rotating speed.
Pressure-detecting device 14 is provided with seat 8 is radially slided, pressure-detecting device 14 includes two pressure detecting wheels
14a, two pressure detecting wheel 14a are located on the same line with the axis of abrasive wheel 12 and external diameter is identical；First driving electricity
Machine 5, displacement detecting mechanism 7, radial drive mechanism 9, the second motor 11, rotation testing agency 13 and pressure-detecting device 14
It is connected with external control terminal.Specifically, the first speed probe 7b is connected with external control terminal, the first speed probe
7b is used to detect the velocity of rotation of drive screw 4, and whether break down so as to detecting the seat 3 that slides axially is stopped.Driving gas
Cylinder 9d is connected with external control terminal, drive cylinder 9d control radially slide seat 8, when a failure occurs it, control abrasive wheel 12 from
Open negative electrode roller surface and stop grinding.Second speed probe 13c is connected with external control terminal, and the second speed probe 13c is used
In detection cathode roll velocity of rotation, whether break down so as to detecting cathode roll and be stopped.
Preferably, the pressure-detecting device 14 radially slides the detection seat 14b of the side of seat 8 by being arranged on, is arranged on inspection
Survey monitor station 14c, the annular pressure detection mechanism 14d being arranged on monitor station 14c of seat 14b upper surfaces and be located in annular
Force transmission shaft 14e compositions on pressure detection mechanism 14d；Two pressure detecting wheel 14a are arranged on force transmission shaft 14e by bearing respectively
Both ends；The pressure detection mechanism 14d is connected with external control terminal.The pressure detection mechanism 14d is by being arranged on monitor station
Annular pressure bearing 14f in 14c through holes and the ring piezoelectric being sequentially stacked to center along annular pressure bearing 14f inwalls
Thin film sensor 14g, falope ring 14h, lead power ring 14i and locating ring 14j compositions；The force transmission shaft 14e is located in locating ring 14j
It is interior and be connected with locating ring 14j interference；It is provided with annular pressure bearing 14f and is adapted with ring piezoelectric thin film sensor 14g
Annular mounting groove；Ring piezoelectric thin film sensor 14g is connected through annular pressure bearing 14f with external control terminal.Pass through
Pressure-detecting device 14 can detect very small physical signalling, make pressure detecting precision high, in normal process of lapping, grinding
Certain operating pressure is kept between wheel 12 and cathode roll, its size is in 0.1-0.20MPa.Can by pressure-detecting device 14
The working pressure conditions of abrasive wheel 12 are detected, so as to control abrasive wheel 12 to be ground by external control terminal.
In use, power-on, drive cylinder 9d drivings radially slide seat 8 and moved, and make abrasive wheel 12 and cathode roll roll surface
Contact, the second motor 11 driving abrasive wheel 12 are ground, and the driving axial sliding seat 3 of the first motor 5 makes abrasive wheel
12 move axially along cathode roll.In process of lapping, displacement detecting mechanism 7 detects the situation of movement for the seat 3 that slides axially, rotation inspection
The rotation situation that mechanism 13 detects cathode roll is surveyed, pressure-detecting device 14 detects cathode roll surface pressing situation, these three detections
Mechanism will detect numerical value and send to external control terminal, and external control terminal carries out data analysis judgement and makes corresponding control
System.
Embodiment provided above is better embodiment of the present utility model, is only used for convenient explanation the utility model, and
It is non-to make any formal limitation, any those of ordinary skill in the art to the utility model, if not departing from
In the range of the utility model carries technical characteristic, locally change or repair using made by the utility model disclosed technology content
The equivalent embodiment of decorations, and without departing from the technical characteristics of the utility model content, still fall within the utility model technical characteristic
In the range of.
Claims (7)
1. a kind of cathode roll milling apparatus, including it is arranged on the bearing (1) of cathode roll roll surface side, it is characterised in that it is described
Bearing (1) is provided with guide rail (2), and the seat (3) that slides axially is provided with guide rail (2), and the seat that slides axially (3) is threaded with driving
Screw mandrel (4), drive screw (4) are connected with the first motor (5), and drive screw (4) be arranged in parallel with guide rail (2), in bearing
(1) both ends along its length are respectively equipped with the fulcrum bearing (6) being engaged with drive screw (4), drive screw (4) connection
There is displacement detecting mechanism (7)；Slide axially to be movably set with seat (3) and radially slide seat (8), radially slide seat (8) connection
There is radial drive mechanism (9)；Erecting bed (10) is provided with seat (8) is radially slided, along cathode roll axial direction on erecting bed (10)
Second motor (11) is installed, the power output shaft of the second motor (11) is connected with abrasive wheel (12), in erecting bed
(10) the rotation testing agency (13) being in contact with cathode roll is provided with, pressure-detecting device is provided with seat (8) is radially slided
(14), pressure-detecting device (14) includes two pressure detecting wheels (14a), two pressure detecting wheels (14a) and abrasive wheel (12)
Axis be located on the same line and external diameter is identical；First motor (5), displacement detecting mechanism (7), radial drive machine
Structure (9), the second motor (11), rotation testing agency (13) and pressure-detecting device (14) connect with external control terminal
Connect.
2. cathode roll milling apparatus according to claim 1, it is characterised in that the displacement detecting mechanism (7) is by setting
Put drive screw (4) wherein one end the first belt pulley (7a), be arranged on the first belt pulley (7a) side bearing (1)
One speed probe (7b), the second belt pulley (7c) being arranged on the first speed probe (7b) inductive axis and connection first,
Linkage belt (7d) composition of two belt pulleys (7a, 7c)；First speed probe (7b) is connected with external control terminal.
3. cathode roll milling apparatus according to claim 1, it is characterised in that the radial drive mechanism (9) is by phase
To setting slide axially seat (3) both ends installing plate (9a), at least two it is parallel and be disposed on two installing plates (9a) it
Between guide rod (9b), be connected to radially slide seat (8) and away from cathode roll installing plate (9a) between back-moving spring (9c)
And the drive cylinder (9d) being connected between the installing plate (9a) for radially sliding seat (8) and remote cathode roll forms；The peace
Loading board (9a) is parallel with the axis of cathode roll；It is described to radially slide seat (8) activity and be located on guide rod (9b)；Driving gas
Cylinder (9d) is connected with external control terminal.
4. cathode roll milling apparatus according to claim 1, it is characterised in that the rotation testing agency (13) is by setting
Put the location-plate (13a) on erecting bed (10), the connecting plate (13b) being hinged on location-plate (13a), be arranged on connecting plate
The second speed probe (13c) of (13b) free end close end and the sense being arranged on the second speed probe (13c) inductive axis
(13d) composition should be taken turns；Second speed probe (13c) is connected with external control terminal.
5. cathode roll milling apparatus according to claim 1, it is characterised in that the pressure-detecting device (14) is by setting
Put and radially sliding the detection seat (14b) of seat (8) side, the monitor station (14c) for being arranged on detection seat (14b) upper surface, setting
Annular pressure detection mechanism (14d) on monitor station (14c) and the power transmission being located in annular pressure testing agency (14d)
Axle (14e) forms；Two pressure detecting wheels (14a) are arranged on force transmission shaft (14e) both ends by bearing respectively；The pressure detecting
Mechanism (14d) is connected with external control terminal.
6. cathode roll milling apparatus according to claim 5, it is characterised in that the pressure detection mechanism (14d) by
The annular pressure bearing (14f) that is arranged in monitor station (14c) through hole and along annular pressure bearing (14f) inwall to center sequentially
The ring piezoelectric thin film sensor (14g) that is stacked, falope ring (14h), lead power ring (14i) and locating ring (14j) composition；Institute
Force transmission shaft (14e) is stated to be located in locating ring (14j) and be connected with locating ring (14j) interference；On annular pressure bearing (14f)
Provided with the annular mounting groove adaptable with ring piezoelectric thin film sensor (14g)；Ring piezoelectric thin film sensor (14g) passes through ring
Shape pressure supporting seat (14f) is connected with external control terminal.
7. cathode roll milling apparatus according to claim 2, it is characterised in that the drive screw (4) and the second skin
The diameter ratio of belt wheel (7c) is 1~3：1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720684359.4U CN206780073U (en) | 2017-06-13 | 2017-06-13 | A kind of cathode roll milling apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720684359.4U CN206780073U (en) | 2017-06-13 | 2017-06-13 | A kind of cathode roll milling apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN206780073U true CN206780073U (en) | 2017-12-22 |
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ID=60717066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720684359.4U Active CN206780073U (en) | 2017-06-13 | 2017-06-13 | A kind of cathode roll milling apparatus |
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| CN (1) | CN206780073U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107009207A (en) * | 2017-06-13 | 2017-08-04 | 广东嘉元科技股份有限公司 | Cathode roll milling apparatus |
| CN111331452A (en) * | 2020-04-02 | 2020-06-26 | 广东嘉元科技股份有限公司 | Negative pressure dust suction cavity structure special for online grinding of cathode roller |
| CN111660197A (en) * | 2019-03-06 | 2020-09-15 | 人科机械设备(陕西)有限公司 | Cathode roll grinding device |
| CN111659486A (en) * | 2020-06-11 | 2020-09-15 | 武汉轻工大学 | Rice huller rubber roll diameter measuring device |
-
2017
- 2017-06-13 CN CN201720684359.4U patent/CN206780073U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107009207A (en) * | 2017-06-13 | 2017-08-04 | 广东嘉元科技股份有限公司 | Cathode roll milling apparatus |
| CN107009207B (en) * | 2017-06-13 | 2018-09-25 | 广东嘉元科技股份有限公司 | Cathode roll milling apparatus |
| CN111660197A (en) * | 2019-03-06 | 2020-09-15 | 人科机械设备(陕西)有限公司 | Cathode roll grinding device |
| CN111331452A (en) * | 2020-04-02 | 2020-06-26 | 广东嘉元科技股份有限公司 | Negative pressure dust suction cavity structure special for online grinding of cathode roller |
| CN111331452B (en) * | 2020-04-02 | 2020-11-03 | 广东嘉元科技股份有限公司 | Negative pressure dust suction cavity structure special for online grinding of cathode roller |
| CN111659486A (en) * | 2020-06-11 | 2020-09-15 | 武汉轻工大学 | Rice huller rubber roll diameter measuring device |
| CN111659486B (en) * | 2020-06-11 | 2022-01-07 | 武汉轻工大学 | Rice huller rubber roll diameter measuring device |
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