CN208472257U - A kind of ring spinner Novel roller transmission device - Google Patents
A kind of ring spinner Novel roller transmission device Download PDFInfo
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- CN208472257U CN208472257U CN201820425648.7U CN201820425648U CN208472257U CN 208472257 U CN208472257 U CN 208472257U CN 201820425648 U CN201820425648 U CN 201820425648U CN 208472257 U CN208472257 U CN 208472257U
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- roller
- motor
- middle roller
- reduction gearbox
- synchronous belt
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- 230000005611 electricity Effects 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims 1
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- 230000008520 organization Effects 0.000 abstract 1
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
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- 238000009987 spinning Methods 0.000 description 3
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- Spinning Or Twisting Of Yarns (AREA)
Abstract
The utility model discloses a kind of ring spinner Novel roller transmission devices, there are two front roller motors for tailstock installation, one middle roller motor and a rear roller motor, front roller motor is coupled by respective front roller reduction gearbox with front roller, middle roller motor passes through double-sided synchronous belt, two middle roller reduction gearboxes and middle roller reverse wheel couple with middle roller, rear roller motor passes through double-sided synchronous belt, two rear roller reduction gearboxes and rear roller reverse wheel couple with rear roller, front roller motor is mounted on motor supporting plate, middle roller motor and middle roller reduction gearbox and reversing arrangement are mounted on the second drawing-off wallboard and are adjustable tensioning, rear roller motor is mounted on the second drawing-off wallboard, headstock middle roller motor and middle roller reduction gearbox are mounted on the second drawing-off wallboard of head breadth framing.Roller gear provided by the utility model, headstock tailstock organization distribution is reasonable, occupies little space, the distance between conveniently adjusted drafting multiple, the twist and each column roller.
Description
Technical field
The utility model relates to ring spinner Novel roller transmission technical field more particularly to a kind of ring spinner are new
Type roller gear.
Background technique
Ring spinner is to obtain yarn by draw twisting.Existing ring spinner uses two-sided structure, leads to
The three column rollers crossed on each face keep different revolving speeds to carry out drawing-off yarn, to obtain different drawing-off revolving speeds, need motor and deceleration
Device drives roller.
One is use a main motor and a gear shift draw box mechanism, gear for the drafting system of ring spinner at present
The speed change output mechanism of six column rollers before, during and after driving is equipped in gearbox, six column rollers and respective speed change by before, during and after
Output connection is realized to the speed of the drawing-off of yarn needed for each column roller, but also therefore transmission system not only needs a large amount of gears
The drafting multiple of pair collocation, the yarn variety so that transmission mechanism is extremely complex, and when respectively spinning is different, transformation total draft times
When number, the gear of the headstock tailstock will be replaced, due to exchanging gear not only heavy workload, and it is time-consuming, it is easy error, the headstock tailstock
Gear replacement is inconsistent etc., tends not to the requirement for meeting spinning weight drawing-off.The drafting system of another structure uses two
Or three motors and reduction gearbox be come three groups of rollers before, during and after driving, due to being not necessarily to change gear box, when changing draft speed
Without artificial Replacement procedure gear, it is greatly improved drafting multiple, is able to satisfy spinning process requirement.But also there is also drawing-offs
Transmission device occupied space is big, the inconvenient problem of each column roller control.There are also a kind of drawing-offs of structure using seven motors and
Reduction gearbox is come three groups of rollers before, during and after driving, and due to being not necessarily to change gear box, also can control each column roller, but motor is excessive,
Control is complicated, and cost is excessively high.
Utility model content
Problem to be solved in the utility model be in view of the above-mentioned drawbacks in the prior art, provide it is a kind of structurally reasonable,
Installation space is small, facilitates the ring spinner Novel roller transmission for the distance for adjusting drafting multiple, the twist and each column roller of control
Device.
To achieve the above object, the utility model uses following technical scheme:
The utility model provides a kind of ring spinner Novel roller transmission device, including before be mounted on the tailstock two
Roller, two middle rollers, two rear rollers and several roller motors, the roller motor is including in two front roller motors, one
Roller motor and a rear roller motor, in which:
Two front roller motors pass through respective front roller reduction gearbox and the corresponding front roller, connection；
The middle roller motor is coupled by the second double-sided synchronous belt with two middle roller reduction gearboxes and middle roller reverse wheel,
Two middle roller reduction gearboxes are separately positioned on the inside and outside two sides of the second double-sided synchronous belt, two middle roller reduction gearboxes with
Respective middle roller connection；
The rear roller motor is coupled by the second double-sided synchronous belt with two rear roller reduction gearboxes and rear roller reverse wheel,
Two rear roller reduction gearboxes are separately positioned on the inside and outside two sides of the second double-sided synchronous belt, two rear roller reduction gearboxes with
Respective rear roller connection；And
A middle roller motor and two middle roller reduction gearboxes for headstock is mounted on the second drawing-off wallboard of head breadth framing
And can be adjusted by the slotted hole of junction, the middle roller motor of headstock by second double-sided synchronous belt and two it is described in
Roller reduction gearbox and middle roller reverse wheel connection, two middle roller reduction gearboxes are separately positioned on second double-sided synchronous belt
Inside and outside two sides, two middle roller reduction gearboxes couple with the middle roller of corresponding headstock.
Further, on the ring spinner Novel roller transmission device, the middle roller and the tailstock of headstock
The middle roller there is same rotation center, the middle roller of the middle roller of headstock and the tailstock has in same rotation
The heart.
Further, on the ring spinner Novel roller transmission device, the tailstock includes: side piece,
Motor supporting plate, the first drawing-off wallboard and the second drawing-off wallboard being mounted on side piece.
It is further preferred that on the ring spinner Novel roller transmission device, two front roller motors
It is mounted on the motor supporting plate, two front roller reduction gearboxes are mounted on the first drawing-off wallboard；One it is described in
Roller motor and two middle roller reduction gearboxes are mounted on the slotted hole tune on the second drawing-off wallboard and passing through junction
Section, and synchronous belt is tensioned by backstand；The rear roller motor is mounted on the second drawing-off wallboard, two rear sieve
Drawing reduction gearbox and reversing arrangement are mounted on the first drawing-off wallboard and can be adjusted by the slotted hole of junction, and by opening
Tight seat tensioning.
Further, on the ring spinner Novel roller transmission device, the middle roller motor of the headstock
Output end has the second driving pulley, and two middle roller reduction gearbox input terminals all have the second passive belt wheel；Described
Two double-sided synchronous belts are wound on the outside of the second driving pulley, one of them the second passive belt wheel and middle roller reverse wheel, institute
Middle roller reduction gearbox is stated to couple with the middle roller respectively.
Further it is further preferable that on the ring spinner Novel roller transmission device, the front roller motor
Output end has the first driving pulley, and the input terminal of the front roller reduction gearbox has the first passive belt wheel, the first synchronous belt peace
On first driving pulley and the first passive belt wheel, and the output end of the front roller reduction gearbox and preceding sieve
The input terminal connection of gear-box is drawn, the output end of the front roller gear-box couples with front roller.
Further it is further preferable that on the ring spinner Novel roller transmission device, the middle roller motor
Output end there is the second driving pulley, and two middle roller reduction gearbox input terminals all have the second passive belt wheel, described
Second double-sided synchronous belt is wound on the outside of second driving pulley, one of them the second passive belt wheel and middle roller reverse wheel,
The middle roller reduction gearbox couples with the middle roller respectively.
Further it is further preferable that on the ring spinner Novel roller transmission device, the rear roller motor
Output end there is third driving pulley, and two rear roller reduction gearbox input terminals all have the passive belt wheel of third, described
Third double-sided synchronous belt is wound on the outside of the third driving pulley, one of third passive belt wheel and rear roller reverse wheel,
The output end of the rear roller reduction gearbox and the rear roller gear-box, input terminal connection, the rear roller gear-box, it is defeated
Outlet couples with the rear roller respectively.
It is further preferred that on the ring spinner Novel roller transmission device, the front roller motor, in
The middle roller motor of roller motor, rear roller motor and headstock is using servo motor or asynchronous machine or variable-frequency motor.
The utility model by adopting the above technical scheme, compared with prior art, has the following technical effect that
(1) two front roller motors of the utility model pass through respective front roller reduction gearbox respectively and couple with front roller, lead to
The revolving speed that front roller motor controls respective front roller respectively is crossed, a middle roller motor is subtracted by double-sided synchronous belt through two middle rollers
Fast case couples with respective middle roller, and by the revolving speed of two column middle roller of middle roller motor control, a rear roller motor passes through
Double-sided synchronous belt couples through two rear roller reduction gearboxes with respective rear roller, passes through turning for two column rear roller of rear roller motor control
Speed, therefore the revolving speed of each column roller can be controlled by click, it can more accurately adjust each column roller revolving speed, the twist and drawing-off times
Number, it is easy to operate；
(2) reduction gearing mechanism of the reduction gearbox as each column roller is used, can not only increase the torque of transmitting, increase is led
Transmission efficiency is stretched, and structurally reasonable, occupied space is few；
(3) rear roller motor is mounted on the second drawing-off wallboard, rear roller reduction gearbox and reversing arrangement are mounted on first
On drawing-off wallboard and be adjustable tensioning, at the same middle roller motor and middle roller reduction gearbox be mounted on it is also adjustable on the second drawing-off wallboard
Section tensioning, opens in addition the middle roller motor and middle roller reduction gearbox that are mounted on the second drawing-off wallboard of head breadth framing are also adjusted
Tightly, therefore by adjusting the position of each motor and reduction gearbox achieve the purpose that required adjusting roller gauge, adjustment is convenient and fast.
Detailed description of the invention
Fig. 1 is a kind of schematic illustration of ring spinner Novel roller transmission device of the utility model；
Fig. 2 is the three dimensional structure diagram that the utility model tail part roller is driven major part；
Fig. 3 is the three dimensional structure diagram of the utility model tail part roller transmission；
Fig. 4 is the three dimensional structure diagram of utility model vehicle head part roller transmission；
Wherein, each appended drawing reference are as follows:
1- front roller motor, the first driving pulley of 2-, the first synchronous belt of 3-, 4- front roller gear-box is right, and 5- first is passive
Belt wheel, 6- front roller reduction gearbox, 7- front roller is left, and 8- tailstock middle roller is left, and 9- headstock front roller is left, 10- middle roller reduction gearbox,
The passive belt wheel of 11- second, the second double-sided synchronous belt of 12-, the second driving pulley of 13-, 14- middle roller reverse wheel, 15- middle roller electricity
Machine, 16- headstock middle roller is right, and 17- front roller is right, and 18- front roller reduction gearbox is right, and 19- headstock middle roller is right, and 20- rear roller is right,
21- rear roller gear-box is right, 22- rear roller reduction gearbox, the passive belt wheel of 23- third, 24- rear roller reverse wheel, 25- rear roller electricity
Machine, 26- third double-sided synchronous belt, 27- third driving pulley, 28- rear roller gear-box is left, 29- shaft coupling, and 30- rear roller is left,
31- second detects ring, 32- side piece, 321- the first drawing-off wallboard, 322- the second drawing-off wallboard, 323- motor supporting plate, 33-
First detection ring, 34- backstand, 35- head breadth framing.
Specific embodiment
The utility model is described in more detail below by specific embodiment, for a better understanding of this reality
With novel, but following embodiments are not intended to limit the scope of the utility model.
As shown in Figs 1-4, the utility model embodiment provides a kind of ring spinner roller gear, including installation
Two front rollers 7,17 on the tailstock, two middle rollers 8,19 and two rear rollers 20,30 and several roller motors；Wherein, roller
Motor includes two front roller motors, 1, middle roller motor 15 and a rear roller motor 25.Two front roller motors 1 are logical
It crosses respective front roller reduction gearbox 6 to couple with corresponding front roller 7,17, to drive its operating.As shown in Figs 1-4, front roller
1 output end of motor has the first driving wheel 2, and the input terminal of front roller reduction gearbox 6 has the first passive belt wheel 5, the first synchronous belt 3
It is mounted on the first driving wheel 2 and the first follower 4, power is reached on front roller reduction gearbox 6, and front roller reduction gearbox 6
Output end couples with the input terminal on the front roller gear-box right side 4, and the output end on the front roller gear-box right side 4 couples with front roller 7, before this
The output end on the roller gear case right side 4 can be coupled by shaft coupling 29 with front roller 7, before being directly controlled by front roller motor 1
The revolving speed of roller 7 realizes the independent control to front roller 7.Two front roller motors are passed through respective front roller respectively to slow down
Case couples with front roller, controls the revolving speed of respective front roller respectively by front roller motor, and a middle roller motor passes through two-sided
Synchronous belt couples through two middle roller reduction gearboxes with respective middle roller, by the revolving speed of two column middle roller of middle roller motor control,
One rear roller motor is coupled through two rear roller reduction gearboxes with respective rear roller by double-sided synchronous belt, passes through rear roller motor
The revolving speed of two column rear rollers is controlled, therefore the revolving speed of each column roller can be controlled by click, can more accurately adjust each column sieve
Revolving speed, the twist and drafting multiple are drawn, it is easy to operate.
Refering to as shown in Figs 1-4, as a preferred embodiment, a middle roller motor 15 passes through the second double-sided synchronous belt
12 couple with two middle roller reduction gearboxes 10 and middle roller reverse wheel 14, and two middle roller reduction gearboxes 10 are separately positioned on first
Inside and outside double-sided synchronous belt 12, two middle roller reduction gearboxes 10 couple with respective middle roller 8,19, to drive middle roller
8,19 operating.The output end of the utility model middle roller motor 15 has the second driving wheel 13, and two middle roller reduction gearboxes
10 input terminals are all had the second passive belt wheel 11, the second double-sided synchronous belt 12 be wound on the second driving wheel 13, one of them second
On follower 11 and middle roller reverse wheel 14, and another second follower 11 connects and is arranged in the second double-sided synchronous belt 12
The outside of second driving wheel 13 and middle roller reverse wheel 14, the output end and middle roller 8,19 of middle roller reduction gearbox 10 pass through shaft coupling
Device 29 couples, and realizes and controls the revolving speed of middle roller 8,19.
Refering to fig. 1 shown in -4, as a preferred embodiment, a rear roller motor 25 passes through the second double-sided synchronous belt 26
With two rear roller reduction gearboxes 22 and rear roller reverse wheel 24, and two rear roller reduction gearboxes 22 are separately positioned on the second double-sided synchronous belt
Inside and outside 26, two rear roller reduction gearboxes 22 couple with respective middle roller 20,30, to drive the operating of middle roller 20,30.
The output end of the utility model rear roller motor 25 has third driving wheel 27, and two rear roller reduction gearboxes, 22 input terminal is had
There is the passive belt wheel 23 of third, the second double-sided synchronous belt 26 is wound on third driving wheel 27 and one of third follower 23 and rear sieve
Draw reverse wheel 24 on, and another third follower 23 connect with the second double-sided synchronous belt 26 and be arranged in third driving wheel 27 and
The output end in the outside of rear roller reverse wheel 24, rear roller reduction gearbox 22 couples with the input terminal of rear roller gear-box 21, rear sieve
The outlet side of gear-box 21 is drawn couple with rear roller 20, equally using the connection of shaft coupling 29, realization is to rear roller 20,30 revolving speeds
Control.
As shown in figure 3, as a preferred embodiment, the tailstock includes: side piece 32, the electricity on installation side piece 28
Machine supporting plate 323 and the first drawing-off wallboard 321 and the second drawing-off wallboard 322 being mounted on side piece 32, motor supporting plate 323 are logical
It crosses fastener to be mounted on side piece 32, the first drawing-off wallboard 321 and the second drawing-off wallboard 322 pass through connecting plate and fastener
It is mounted on side piece 32, two front roller motors 1 are mounted on motor supporting plate 323, and front roller reduction gearbox 6 is mounted on first
On drawing-off wallboard 321.
As another preferred embodiment, a middle roller motor 15 and two middle roller reduction gearboxes 10 and middle roller reverse wheel
14 are mounted on the slotted hole on the second drawing-off wallboard 322 by junction, facilitate and adjust middle roller motor 15 and two middle rollers
The installation site of reduction gearbox 10 adjusts, to achieve the purpose that adjust roller spacing, backstand 34 and middle roller motor support base are logical
It crosses fastener and couples conveniently adjusted and the second double-sided synchronous belt 12 of tensioning, the first drawing-off wallboard 321 is equipped with middle roller deceleration
The slotted hole cavity that 10 output shaft of case passes through, as shown in figure 3, rear roller motor 25 is installed on the second drawing-off wallboard 322, after two
Roller reduction gearbox 22 and rear roller reverse wheel 24 are mounted on the slotted hole on the first drawing-off wallboard 321 by junction, by tight
Firmware connection, the second drawing-off wallboard 322 exist in rear roller motor 25 and two rear roller reduction gearboxes 22 and rear roller reverse wheel 24
The installation place of first drawing-off wallboard 32-1 be equipped with slotted hole, conveniently adjusted rear roller motor 25 and two rear roller reduction gearboxes 22 and
The distance between each roller is adjusted in the installation site of rear roller reverse wheel 24.
Refering to as shown in Fig. 1,4, as a particularly preferred embodiment, the middle roller motor 15 and middle sieve of a headstock
Reduction gearbox 10 and middle roller reverse wheel 14 is drawn to be mounted on the second drawing-off wallboard 322 of head breadth framing 35 through the oval of junction
Hole is coupled by fastener, and the middle roller motor 15 of headstock passes through the second double-sided synchronous belt 12 and two middle roller reduction gearboxes 10
With middle roller reverse wheel 14, and two middle roller reduction gearboxes 10 are separately positioned on inside and outside the second double-sided synchronous belt 12, and two
A middle roller reduction gearbox 10 couples with respective middle roller 8,19, to drive the operating of middle roller 8,19.
With continued reference to as shown in Fig. 1,4, the output end of the middle roller motor 15 of headstock has the second driving wheel 13, and two
10 input terminal of middle roller reduction gearbox is all had the second passive belt wheel 11, and the second double-sided synchronous belt 12 is wound on 13 He of the second driving wheel
On one of them second follower 11 and middle roller reverse wheel 14, and another second follower 11 and the first double-sided synchronous belt 12
Connect and be arranged in the outside of the second driving wheel 13 and middle roller reverse wheel 14, the output end and middle roller of middle roller reduction gearbox 10
9,16 are coupled by shaft coupling 29, are realized and are controlled the revolving speed of middle roller 9,16.
In addition, in front roller motor 1, middle roller motor 15 used by the utility model, rear roller motor 25 and headstock
For roller motor 15 using servo motor or asynchronous machine or variable-frequency motor, used reduction gearbox is commercial product, such as German knob
The reduction gearbox of Ka Te, tricyclic, the reduction gearing mechanism using reduction gearbox as each column roller, can not only increase the torsion of transmitting
Square increases drawing-off transmission efficiency, and structurally reasonable, and occupied space is few.
Specific embodiment of the utility model is described in detail above, but it is merely an example, this is practical new
Type is not restricted to particular embodiments described above.To those skilled in the art, any pair of the utility model carries out
Equivalent modifications and substitution also all among the scope of the utility model.Therefore, in the spirit and model for not departing from the utility model
Lower made equal transformation and modification are enclosed, should all be covered in the scope of the utility model.
Claims (9)
1. a kind of ring spinner Novel roller transmission device, including be mounted on the tailstock two front rollers, two middle rollers,
Two rear rollers and several roller motors, which is characterized in that the roller motor includes two front roller motors, a middle roller electricity
Machine and a rear roller motor, in which:
Two front roller motors are coupled by respective front roller reduction gearbox with the corresponding front roller；
The middle roller motor is coupled by the second double-sided synchronous belt with two middle roller reduction gearboxes and middle roller reverse wheel, and two
The middle roller reduction gearbox is separately positioned on the inside and outside two sides of the second double-sided synchronous belt, two middle roller reduction gearboxes and respectively
Middle roller connection；
The rear roller motor is coupled by the second double-sided synchronous belt with two rear roller reduction gearboxes and rear roller reverse wheel, and two
The rear roller reduction gearbox is separately positioned on the inside and outside two sides of the second double-sided synchronous belt, two rear roller reduction gearboxes and respectively
Rear roller connection；And
A middle roller motor and two middle roller reduction gearboxes for headstock is mounted on head breadth framing and can be by the length of junction
Circular hole is adjusted, the middle roller motor of headstock by second double-sided synchronous belt and two middle roller reduction gearboxes and it is described in
The connection of roller reverse wheel, two middle roller reduction gearboxes are separately positioned on the inside and outside two sides of second double-sided synchronous belt, described in two
Middle roller reduction gearbox couples with the middle roller of corresponding headstock.
2. ring spinner Novel roller transmission device according to claim 1, which is characterized in that middle sieve of headstock
Drawing has same rotation center with the middle roller of the tailstock, and the middle roller of headstock and the middle roller of the tailstock have same
One rotation center.
3. ring spinner Novel roller transmission device according to claim 1, which is characterized in that the tailstock includes:
Side piece, motor supporting plate, the first drawing-off wallboard and the second drawing-off wallboard being mounted on side piece.
4. ring spinner Novel roller transmission device according to claim 3, which is characterized in that two front rollers
Motor is mounted on the motor supporting plate, and two front roller reduction gearboxes are mounted on the first drawing-off wallboard；One institute
It states middle roller motor and two middle roller reduction gearboxes is mounted on the second drawing-off wallboard and by the oval of junction
Hole is adjusted, and is tensioned synchronous belt by backstand；The rear roller motor is mounted on the second drawing-off wallboard, described in two
Rear roller reduction gearbox and reversing arrangement are mounted on the first drawing-off wallboard and can be adjusted by the slotted hole of junction, and lead to
Cross backstand tensioning.
5. ring spinner Novel roller transmission device according to claim 1, which is characterized in that middle sieve of the headstock
Drawing the output end of motor has the second driving pulley, and two middle roller reduction gearbox input terminals all have the second passive belt
Wheel；Second double-sided synchronous belt is wound on the second driving pulley, one of them described second passive belt wheel and middle roller reverse wheel
Outside, the middle roller reduction gearbox couples with the middle roller respectively.
6. -2 described in any item ring spinner Novel roller transmission devices according to claim 1, which is characterized in that before described
Roller motor output end has the first driving pulley, and the input terminal of the front roller reduction gearbox has the first passive belt wheel, and first
Synchronous belt is mounted on first driving pulley and the first passive belt wheel, and the output end of the front roller reduction gearbox with
The input terminal of the front roller gear-box couples, and the output end of the front roller gear-box couples with front roller.
7. -2 described in any item ring spinner Novel roller transmission devices according to claim 1, which is characterized in that in described
The output end of roller motor has the second driving pulley, and two middle roller reduction gearbox input terminals all have the second passive belt
Wheel, second double-sided synchronous belt are wound on second driving pulley, one of them second passive belt wheel and middle roller reverse wheel
Outside, the middle roller reduction gearbox respectively with the middle roller, connection.
8. -2 described in any item ring spinner Novel roller transmission devices according to claim 1, which is characterized in that after described
The output end of roller motor has third driving pulley, and two rear roller reduction gearbox input terminals all have third passive belt
Wheel, third double-sided synchronous belt are wound on the outer of the third driving pulley, the passive belt wheel of one of third and rear roller reverse wheel
Side, the output end of the rear roller reduction gearbox couple with the input terminal of the rear roller gear-box, the rear roller gear-box
Output end couples with the rear roller respectively.
9. ring spinner Novel roller transmission device according to claim 1-4, which is characterized in that before described
Roller motor, middle roller motor, rear roller motor and headstock middle roller motor using servo motor or asynchronous machine or frequency conversion
Motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820425648.7U CN208472257U (en) | 2018-03-28 | 2018-03-28 | A kind of ring spinner Novel roller transmission device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820425648.7U CN208472257U (en) | 2018-03-28 | 2018-03-28 | A kind of ring spinner Novel roller transmission device |
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| CN208472257U true CN208472257U (en) | 2019-02-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108179506A (en) * | 2018-03-28 | 2018-06-19 | 湖北天门纺织机械股份有限公司 | A kind of ring spinner Novel roller transmission device |
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2018
- 2018-03-28 CN CN201820425648.7U patent/CN208472257U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108179506A (en) * | 2018-03-28 | 2018-06-19 | 湖北天门纺织机械股份有限公司 | A kind of ring spinner Novel roller transmission device |
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