CN209226211U - Unwinding device and banding machine - Google Patents
Unwinding device and banding machine Download PDFInfo
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- CN209226211U CN209226211U CN201822068817.9U CN201822068817U CN209226211U CN 209226211 U CN209226211 U CN 209226211U CN 201822068817 U CN201822068817 U CN 201822068817U CN 209226211 U CN209226211 U CN 209226211U
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Abstract
The utility model relates to a kind of unwinding device and banding machine, unwinding device includes unreeling structure, and unreeling structure includes unreeling shaft and unreels driver；Conveying mechanism is unreeled, unreeling conveying mechanism includes unreeling conveyer belt, unreeling threading bar and the first driver, unreels threading bar and is set to and unreels conveyer belt, and the driving of the first driver unreels that conveyer belt is mobile, makes to unreel conveyer belt drive and unreel threading bar mobile；And strainer is unreeled, unreeling strainer includes unwinding tension pendulum roller, and unwinding tension pendulum roller is for being tensioned material volume, material volume being made to keep pre-tension.It unreels the rotation of driver driving unreeling shaft, unreel material volume, the material volume access of releasing unreels threading bar, unreel threading bar guides material volume to be conveyed under the induced effect for unreeling conveyer belt, when acceleration and deceleration in transmission process, the tension of material volume will change, at this point, can put roller by unwinding tension compresses material volume, so that material volume keeps pre-tension, to ensure tension stationarity of the material volume in conveying.
Description
Technical field
The utility model relates to material volumes to cut technical field, more particularly to a kind of unwinding device and banding machine.
Background technique
Battery is in process, it usually needs uses battery pole piece, the quality of battery pole piece influences the quality of battery
And service life.Banding machine is that one kind can answer the mechanical device of the longitudinal sectional band at several required specifications of band
For in the cutting processing of battery pole piece.
However, with the continuous pull-out of material volume, the weight of material volume exists since material volume is during being processed into battery pole piece
It constantly changes, and usually will do it acceleration and deceleration in conveying, these factors can make the tension of material volume in the transmission that can not protect
Hold it is constant, so that influencing final processing obtains the quality of battery pole piece.
Utility model content
Based on this, it is necessary to provide a kind of unwinding device and banding machine.The unwinding device can be such that the material volume in conveying protects
Pre-tension is held, the problem for avoiding being caused tensile force non-constant by acceleration and deceleration；The banding machine includes unwinding device above-mentioned, material
Constant tension in transmission process is rolled up, obtains the quality of battery pole piece after improving material volume cutting.
Its technical solution is as follows:
On the one hand, a kind of unwinding device, including unreeling structure are provided, unreeling structure includes unreeling shaft and unreels driving
Device, unreeling shaft unreel driver for driving unreeling shaft to rotate for placing material volume；Conveying mechanism is unreeled, conveying mechanism is unreeled
Including unreeling conveyer belt, unreel threading bar and the first driver, unreels threading bar and be set to and unreel conveyer belt and for guiding material volume
It is conveyed, to unreel conveyer belt mobile and make to unreel conveyer belt drive to unreel threading bar mobile for driving for the first driver；And
Strainer is unreeled, unreeling strainer includes unwinding tension pendulum roller, and unwinding tension pendulum roller is for being tensioned material volume, keeping material volume
Pre-tension.
Above-mentioned unwinding device unreels the rotation of driver driving unreeling shaft, unreels material volume, and the material volume access of releasing is put
Threading bar is rolled up, threading bar is unreeled and guides material volume to be conveyed under the induced effect for unreeling conveyer belt, when being added and subtracted in transmission process
When fast, the tension of material volume will change, at this point, can put roller by unwinding tension compresses material volume, so that material volume is kept for default
Clamp force, to ensure tension stationarity of the material volume in conveying.
Technical solution is illustrated further below:
Strainer is unreeled in one of the embodiments, to further include unwinding tension detector and unreel tightening drive,
Unwinding tension detector is used to obtain the tension data of material volume, unreel tightening drive for driving unwinding tension pendulum roller to swing,
And make unwinding tension pendulum roller tensioning material volume.
Unreeling strainer in one of the embodiments, further includes rotatable tensioning bracket, and unwinding tension pendulum roller is set
In tensioning bracket, unreels tightening drive driving tensioning holder pivots and make tensioning bracket that unwinding tension pendulum roller be driven to swing.
Unwinding tension detector is rotation angle detecting sensor in one of the embodiments, and rotation angle detecting sensor is used for
The rotational angle of detection tensioning bracket；
Or unwinding tension detector is tension detection sensor, tension detection sensor is used to detect the tensile force of material volume.
Unreeling structure further includes unreeling nip rolls in one of the embodiments, unreels nip rolls and is used for unreeling shaft
The material volume that conveying comes is flattened.
It in one of the embodiments, further include bracket institution, bracket institution includes chassis and set on the of chassis two sides
Side plate and the second side plate, unreel threading bar and unwinding tension pendulum roller is set between the first side plate and the second side plate；Unreeling machine
Structure further includes unreeling bracket, correction driver and offset detector, and unreeling shaft, which is hingedly set to, unreels bracket, and correction driver is used for
Driving unreels bracket and moves on chassis, and offset detector is for detecting material volume with the presence or absence of offset.
Unreeling structure further includes the first adjusting rod and the second adjusting rod, the first adjusting rod energy in one of the embodiments,
It enough compresses to unreel nip rolls and make to unreel nip rolls and move in a first direction, the second adjusting rod, which can compress, unreels nip rolls, simultaneously
Make to unreel nip rolls in second direction movement.
Unreeling conveyer belt in one of the embodiments, includes first unreeling carrier chain and second and unreeling carrier chain, and first
Carrier chain is unreeled set on the first side plate, second unreels carrier chain set on the second side plate, and the both ends for unreeling threading bar are respectively arranged on the
One, which unreels carrier chain and second, unreels carrier chain.
Unreeling structure further includes tape splicing platform in one of the embodiments, and tape splicing platform unreels nip rolls for docking
It conveys the material volume come and is delivered to material volume and unreel threading bar.
On the other hand, a kind of banding machine is additionally provided, the unwinding device including any one such as above-mentioned technical solution.
Above-mentioned banding machine unreels operation when carrying out material volume cutting using unwinding device above-mentioned, to ensure that material volume
Constant tension during transportation obtains the quality of battery pole piece after improving cutting.
Detailed description of the invention
Fig. 1 is the overall structure diagram of unwinding device in embodiment；
Fig. 2 is to unreel conveyer belt overall structure diagram in embodiment；
Fig. 3 unreels carrier chain front view in Fig. 2 embodiment second；
Fig. 4 is the first visual angle schematic diagram of unwinding device in embodiment；
Fig. 5 is the internal structure schematic diagram of unwinding device in embodiment；
Fig. 6 is the second visual angle schematic diagram of unwinding device in embodiment；
Fig. 7 is the third visual angle schematic diagram of unwinding device in embodiment；
Fig. 8 is the front view of the unwinding device of banding machine in embodiment.
Attached drawing mark explanation:
110, unreeling shaft, 120, unreel driver, 130, unreel nip rolls, 140, unreel bracket, the 151, first adjusting rod,
152, the second adjusting rod, 160, tape splicing platform, 211, first unreels carrier chain, and 212, second unreels carrier chain, and 220, unreel and wear
Rod failure, the 230, first driver, 240, conveying roller, 250, tension-sensing roller, 310, unwinding tension put roller, 320, unreel tensioning drive
Dynamic device, 330, tensioning bracket, 410, chassis, the 420, first side plate, the 430, second side plate, 500, material volume.
Specific embodiment
The embodiments of the present invention are described in detail with reference to the accompanying drawing:
It should be noted that it can be directly in another element when alleged element is with another element " fixation " in text
Above or there may also be elements placed in the middle.When an element is considered as with another element " connection ", it be can be directly
It is connected to another element in succession or may be simultaneously present centering elements.On the contrary, when element is referred to as " directly existing " another element
When "upper", intermediary element is not present.Term as used herein "vertical", "horizontal", "left" and "right" and similar table
It states for illustrative purposes only, is not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model
The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term " and or " used herein packet
Include any and all combinations of one or more related listed items.
Embodiment as shown in Figures 1 to 8, provides a kind of unwinding device, including unreeling structure, and unreeling structure includes putting
Spool 110 unreels driver 120 for driving unreeling shaft for placing material volume 500 with driver 120, unreeling shaft 110 is unreeled
110 rotations；Conveying mechanism is unreeled, unreeling conveying mechanism includes unreeling conveyer belt, unreeling threading bar 220 and the first driver 230,
Threading bar 220 is unreeled set on unreeling conveyer belt and being used to that material volume 500 to be guided to be conveyed, the first driver 230 is put for driving
Volume conveyer belt is mobile and makes to unreel conveyer belt drive to unreel threading bar 220 mobile；And strainer is unreeled, unreel strainer
Roller 310 is put including unwinding tension, unwinding tension pendulum roller 310 is for being tensioned material volume 500, material volume 500 being made to keep pre-tension.
It unreels driver 120 to drive the rotation of unreeling shaft 110, unreel material volume 500, the access of material volume 500 of releasing is put
Threading bar 220 is rolled up, threading bar 220 is unreeled and guides material volume 500 to be conveyed under the induced effect for unreeling conveyer belt, when conveying
In journey when acceleration and deceleration, the tension of material volume 500 will change, at this point, can by unwinding tension put roller 310 compress material volume 500, with
Material volume 500 is set to keep pre-tension, to ensure tension stationarity of the material volume 500 in conveying.
During transportation, acceleration and deceleration when due to conveying may be such that the conveyance tension of material volume 500 occurs to material volume 500
Variation, the conveyance tension so as to cause material volume 500 is unstable, this will lead to the battery pole piece generation quality that subsequent cutting generates and asks
Topic, is unable to satisfy actual processing request.
The present embodiment puts the setting of roller 310 by unwinding tension, when acceleration and deceleration make tension of the material volume 500 in conveying can not
When keeping stablizing, the material volume 500 in 310 pairs of roller conveyings is put by unwinding tension and carries out tensioning operation, to keep pre-tension,
Guarantee the constant tension of material volume 500 in conveying.
It should be noted that the tensioning operation of unwinding tension pendulum roller 310 refers to the tension for making material volume 500 in conveying guarantor
It is fixed to keep steady, which can be preset tension range, be also possible to some constant tension value, to meet actual needs.
Further, unwinding device further includes control mechanism, and control mechanism includes controller, unreels driver 120, first
Driver 230 is electrically connected with controller, and when the tension of material volume 500 is non-constant, controller can control unwinding tension pendulum
Roller 310 adjusts the tension of material volume 500, so that material volume 500 keeps pre-tension.
In addition, unreeling driver 120 can be servo motor.
Further, unreeling conveying mechanism further includes tension-sensing roller 250, and tension-sensing roller 250 can be used to judge
500 tensile force of material volume, while also as the conveying roller 240 for unreeling conveyer belt.As shown in Figure 1, unreeling conveyer belt in transmission process
The multiple conveying rollers 240 of middle setting, to carry out tensioning and the planning of transport path to unreeling conveyer belt, those skilled in the art can root
According to needing specifically to be arranged, which is not described herein again.
Embodiment as illustrated in figures 1 and 8, unreeling strainer further includes that unwinding tension detector drives with tensioning is unreeled
Device 320, unwinding tension detector are used to obtain the tension data of material volume 500, unreel tightening drive 320 for drive unreel and open
Power pendulum roller 310 swings and unwinding tension pendulum roller 310 is made to be tensioned material volume 500.
Unwinding tension detector and unreel tightening drive 320 with controller be electrically connected.Unwinding tension detector obtains
The tension data of material volume 500 is got, controller unreels tightening drive 320 according to the control of the tension data of current material volume 500 and drives
Dynamic unwinding tension pendulum roller 310 is swung.
Embodiment as illustrated in figures 1 and 8, unreeling strainer further includes rotatable tensioning bracket 330, unwinding tension
It puts roller 310 and is set to tensioning bracket 330, unreel the driving tensioning bracket 330 of tightening drive 320 and rotate and make to be tensioned 330 band of bracket
Dynamic unwinding tension pendulum roller 310 is swung.
Further, unreeling tightening drive 320 is low rubbing cylinder driver, and unreeling strainer further includes electrically comparing
Example valve, tensioning bracket 330 are L-type support, and the angle of L-type support is hingedly set to the first side plate 420 or the second side plate 430, L-type
One end of bracket and unreel that tightening drive 320 is hinged, unwinding tension puts the other end that roller 310 is hingedly set to L-type support.Such as figure
In embodiment shown in 1, a part of L-type support is in a horizontal position always, and another part of L-type support is in vertical always
Position shows that the tension of material volume 500 is changed and improper preset is opened when the part of vertical position swings
Power, at this point, by starting unreel tightening drive 320 with drive tensioning bracket 330 rotation, with adjust material volume 500 tensile force,
Tensile force is set to keep pre-tension.Certainly, those skilled in the art can be specifically arranged as needed, actual to meet
It needs, which is not described herein again.
In one embodiment, unwinding tension detector is rotation angle detecting sensor, and rotation angle detecting sensor is for detecting
It is tensioned the rotational angle of bracket 330.
Roll angle inspection device is used to detect the rotational angle of tensioning bracket 330, when the tension of material volume 500 is non-constant, material volume
500 tension can make the position for being tensioned bracket 330 change, it may be assumed that so that tensioning bracket 330 is rotated, at this point, passing through detection
It is tensioned the rotational angle of bracket 330, can calculate the tensile force of material volume 500 in currently being conveyed.
Certainly, unwinding tension detector can also be tension detection sensor, and tension detection sensor is for detecting material volume
500 tensile force, directly detection obtain tensioning force data of the material volume 500 in current conveying.
If Fig. 1, Fig. 4 are to embodiment shown in Fig. 8, unreeling structure further includes unreeling nip rolls 130, unreels nip rolls 130
It is flattened for the material volume 500 come will to be conveyed on unreeling shaft 110.
Nip rolls 130 is unreeled for flattening the material strip exported by material volume 500, in order to subsequent conveying and cutting.
Such as Fig. 1, embodiment as shown in Figure 6 to 8, unwinding device further includes bracket institution, and bracket institution includes chassis
410 and the first side plate 420 and the second side plate 430 set on 410 two sides of chassis, unreel threading bar 220 and unwinding tension pendulum roller 310
It is set between the first side plate 420 and the second side plate 430；Unreeling structure further includes unreeling bracket 140, correction driver and offset
Detector, unreeling shaft 110 are hingedly set to and unreel bracket 140, and correction driver unreels bracket 140 in chassis 410 for driving
Mobile, offset detector is for detecting material volume 500 with the presence or absence of offset.
As shown in fig. 7, offset detector is for detecting material volume 500 with the presence or absence of offset, offset sensor and controller electricity
Property connection.When the material strip transferred out by material volume 500 is required by there is offset when unreeling nip rolls 130 or do not meet conveying
When, offset detector, which will test out, is unable to satisfy conveying requirement, at this point, offset detector sends a signal to controller, makes to control
The driving of device error correct driver unreels bracket 140 and moves on chassis 410, to make the position of the unreeling shaft 110 on chassis 410
It sets and also adjusts therewith, correct the conveying of material volume 500.
Support plate is unreeled as shown in figure 4, unreeling bracket 140 and unreeling support plate and second including first, first unreels support
Plate and second unreels support plate and is arranged in spacing, and first unreels support plate and second and unreel support plate and be equipped with installation position, puts
The both ends of spool 110 respectively with corresponding installation position coordination hinge, make unreeling shaft 110 be set to first to unreel support plate and second and put
It rolls up between support plate.
Further, unreeling shaft 110 can be gas expansion shaft.
Embodiment as shown in Figures 4 to 7, unreeling structure further include the first adjusting rod 151 and the second adjusting rod 152, and
One adjusting rod 151 can be compressed to unreel nip rolls 130 and make to unreel nip rolls 130 and be moved in a first direction, the second adjusting rod
152 can compress and unreel nip rolls 130 and making to unreel nip rolls 130 mobile in second direction.
Nip rolls 130 is unreeled in a first direction and in the moving process of second direction, realizes the exhibition to material volume 500 in conveying
Flat operation.
Further, the first adjusting rod 151 be the first screw rod, the second adjusting rod 152 be the second screw rod, be additionally provided with respectively with
The first threaded hole and the second threaded hole of first screw rod and the cooperation of the second screw rod, when needing to adjust, the first screw rod and the first spiral shell
Pit cooperation rotation unreels nip rolls 130, makes to unreel nip rolls 130 the to make the first screw rod compress in rotary course
One direction is mobile, and the second screw rod and the cooperation of the second threaded hole rotate, to make the second screw rod compress the exhibition of unreeling in rotary course
Plain-barreled roll 130 makes to unreel nip rolls 130 in second direction movement.
In embodiment as shown in Figure 4, first direction can be the upper and lower that adjustment unreels 130 upper and lower position of nip rolls
To；Second direction can be the left and right directions that adjustment unreels 130 left-right position of nip rolls.
Embodiment as shown in Figure 2, unreeling conveyer belt includes first unreeling carrier chain 211 and second and unreeling carrier chain 212,
First unreels carrier chain 211 set on the first side plate 420, and second unreels carrier chain 212 set on the second side plate 430, unreels threading bar
220 both ends, which are respectively arranged on first and unreel carrier chain 211 and second, unreels carrier chain 212.
First, which unreels carrier chain 211 and second, unreels carrier chain 212 and is respectively arranged on the first side plate 420 and the second side plate 430,
And the both ends for unreeling threading bar 220 are respectively arranged on first unreels carrier chain 211 and second and unreel carrier chain 212, and make to unreel and wear
Rod failure 220 is in horizontally disposed.Carrier chain 212 is unreeled in conveying operation so set, working as first and unreeling carrier chain 211 and second
When, drive unreels 220 synchronizing moving of threading bar, guides material volume 500 to carry out continuing conveying to make to unreel threading bar 220.
As shown in Figures 2 and 3, the first driver 230 drives a drive shaft by carrier chain, and the two sides of the drive shaft are equal
Equipped with driving gear, first, which unreels carrier chain 211 and second, unreels driving gear of the carrier chain 212 respectively with drive shaft two sides and matches
It closes, when the first driver 230 drives the drive shaft turns by carrier chain, drive shaft drives the rotation of sliding tooth wheel, to make
Driving gear drives corresponding first to unreel carrier chain 211 and second respectively and unreels the movement of carrier chain 212.
Embodiment as shown in Figure 3 and Figure 7, unreeling structure further include tape splicing platform 160, and tape splicing platform 160 is for docking
It unreels the material volume 500 that the conveying of nip rolls 130 comes and is delivered to material volume 500 and unreel threading bar 220.
The present embodiment additionally provides a kind of banding machine, the unwinding device including any one such as above-mentioned embodiment.It is put using this
Winding apparatus carries out unreeling operation when material volume 500 is cut, to ensure that the constant tension of material volume 500 during transportation, mentions
The quality of battery pole piece is obtained after high cutting.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (10)
1. a kind of unwinding device characterized by comprising
Unreeling structure, the unreeling structure include unreeling shaft and unreel driver, and the unreeling shaft is described to put for placing material volume
Volume driver is for driving the unreeling shaft to rotate；
Conveying mechanism is unreeled, the conveying mechanism that unreels includes unreeling conveyer belt, unreeling threading bar and the first driver, described to put
Volume threading bar unreels conveyer belt described in and for guiding the material volume to be conveyed, and first driver is for driving
It is described to unreel conveyer belt movement and described unreel is made to unreel the movement of threading bar described in conveyer belt drive；And
Strainer is unreeled, the strainer that unreels includes unwinding tension pendulum roller, and the unwinding tension pendulum roller is for being tensioned institute
It states material volume, the material volume is made to keep pre-tension.
2. unwinding device according to claim 1, which is characterized in that the strainer that unreels further includes unwinding tension inspection
It surveys device and unreels tightening drive, the unwinding tension detector is used to obtain the tension data of the material volume, and described unreel is opened
Tight driver is for driving the unwinding tension pendulum roller to swing and the unwinding tension pendulum roller being made to be tensioned the material volume.
3. unwinding device according to claim 2, which is characterized in that the strainer that unreels further includes rotatable
Locking bracket, the unwinding tension pendulum roller are set to the tensioning bracket, and the tightening drive that unreels drives the tensioning bracket to turn
It moves and makes the tensioning bracket that the unwinding tension pendulum roller be driven to swing.
4. unwinding device according to claim 3, which is characterized in that the unwinding tension detector is roll angle inspection sensing
Device, the rotation angle detecting sensor are used to detect the rotational angle of the tensioning bracket；
Or the unwinding tension detector is tension detection sensor, the tension detection sensor is for detecting the material volume
Tensile force.
5. unwinding device according to claim 1-4, which is characterized in that the unreeling structure further includes unreeling exhibition
Plain-barreled roll, the material volume for unreeling nip rolls for that will convey on the unreeling shaft flatten.
6. unwinding device according to claim 5, which is characterized in that further include bracket institution, the bracket institution includes
Chassis and the first side plate and the second side plate set on the chassis two sides, it is described to unreel threading bar and unwinding tension pendulum roller is equal
Between first side plate and second side plate；The unreeling structure further include unreel bracket, correction driver and partially
Move detector, the unreeling shaft be hingedly set to it is described unreel bracket, the correction driver exists for unreeling bracket described in driving
It is moved on the chassis, the offset detector is for detecting the material volume with the presence or absence of offset.
7. unwinding device according to claim 6, which is characterized in that the unreeling structure further includes the first adjusting rod and
Two adjusting rods, first adjusting rod, which can compress, described to be unreeled nip rolls and makes described to unreel nip rolls and move in a first direction
Dynamic, second adjusting rod, which can compress, described to be unreeled nip rolls and makes that described to unreel nip rolls mobile in second direction.
8. unwinding device according to claim 6, which is characterized in that the conveyer belt that unreels includes first unreeling carrier chain
Carrier chain is unreeled with second, described first unreels carrier chain set on first side plate, and described second unreels carrier chain set on institute
State the second side plate, the both ends for unreeling threading bar, which are respectively arranged on described first and unreel carrier chain and described second, unreels conveying
Chain.
9. unwinding device according to claim 5, which is characterized in that the unreeling structure further includes tape splicing platform, described
Tape splicing platform be used to dock it is described unreel the material volume that nip rolls conveying comes and be delivered to the material volume described unreel threading
Bar.
10. a kind of banding machine, which is characterized in that including such as described in any item unwinding devices of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822068817.9U CN209226211U (en) | 2018-12-10 | 2018-12-10 | Unwinding device and banding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822068817.9U CN209226211U (en) | 2018-12-10 | 2018-12-10 | Unwinding device and banding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209226211U true CN209226211U (en) | 2019-08-09 |
Family
ID=67507043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822068817.9U Active CN209226211U (en) | 2018-12-10 | 2018-12-10 | Unwinding device and banding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209226211U (en) |
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2018
- 2018-12-10 CN CN201822068817.9U patent/CN209226211U/en active Active
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Address after: 101-301, building 3, No.9, Huijiang Shinan 2nd Road, Dashi street, Panyu District, Guangzhou, Guangdong 511400 Patentee after: Guangzhou Yihong Intelligent Equipment Co.,Ltd. Country or region after: Zhong Guo Address before: 101-301, building 3, No.9, Huijiang Shinan 2nd Road, Dashi street, Panyu District, Guangzhou, Guangdong 511400 Patentee before: GUANGZHOU EHOLLY INTELLIGENT EQUIPMENT Co.,Ltd. Country or region before: Zhong Guo |
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