CN210586367U - Multistage tandem rolling four-roller rolling device - Google Patents
Multistage tandem rolling four-roller rolling device Download PDFInfo
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- CN210586367U CN210586367U CN201921374085.4U CN201921374085U CN210586367U CN 210586367 U CN210586367 U CN 210586367U CN 201921374085 U CN201921374085 U CN 201921374085U CN 210586367 U CN210586367 U CN 210586367U
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Abstract
The utility model discloses a multistage continuous rolling four-roller rolling device, which completes rolling when a pole piece passes between two working rollers; the working rolls and the supporting rolls are arranged in the same row to form a roll group, each row of working rolls and the supporting rolls are one roll group, the supporting rolls are used for bearing the pressure of the pole pieces to the working rolls, the supporting rolls are in contact with the working rolls and rotate along with the working rolls, the supporting rolls can support the working rolls at any moment, and the working rolls and the supporting rolls bear the pressure of the pole pieces during rolling; roll-in group is two rows at least, realizes two-stage or multistage roll-in operation, the utility model discloses a four roller rolling device of multistage continuous rolling sets up two work rolls and two backing rolls in every roll-in group, and the pole piece is every to set up two running rollers at least, supports the pressure that the pole piece produced jointly, effectively prevents that the middle part of the work roll of direct and pole piece contact from receiving pressure deformation, prevents that thick both sides are thin phenomenon in the middle of the pole piece appears.
Description
Technical Field
The utility model relates to a battery pole piece processing technology field further relates to a four roller rolling device of multistage tandem rolling.
Background
The production of battery pole piece, usually mix additive such as conductive agent separately positive and negative electrode material of the battery first, then stir the mixed material through the agitator, make slurry, then coat the slurry on the conductive substrate of the positive and negative pole piece evenly through the coating machine; the positive electrode adopts aluminum foil, the negative electrode adopts copper foil, and the processes of drying, rolling, slitting, flaking and the like are carried out.
The rolling procedure is an important part in the production process of lithium batteries and power batteries, and materials with larger thickness are rolled into thinner pole pieces, so that the compaction density of the pole pieces is improved, and the pole pieces are served for subsequent processes. At present, the width of the base material has a development trend of being wider and wider, and the width of the roller surface of the corresponding roller press is also larger and larger. At present, a roller with the roller diameter of 800mm is generally adopted, the width of the roller surface is determined by properly lengthening about 100mm according to the width of a base material of a battery pole piece, the currently adopted specifications are more phi 800 multiplied by 1050mm and phi 800 multiplied by 1100mm, a roller pair mode is generally adopted, one roller press is used for one-step rolling forming, and the battery pole piece reaches the thickness or compaction density required by the process.
As the base material is wider and wider, the roller is elastically deformed under stress during rolling, so that the middle of the pole piece is thick, the two sides of the pole piece are thin, and the requirement of rolling thickness consistency is not met. Therefore, in order to increase the rigidity of the roller and reduce the deformation, the roller with the diameter of more than 800mm is usually adopted, when the anode material is rolled, the density of the material is high, some processes need to adopt large pressure, the roller diameter can reach 1000mm, the roller diameter is increased, the weight of the roller is correspondingly increased, the housing of the rolling mill is also larger, and the processing and the maintenance have great difficulty.
For those skilled in the art, how to ensure the rigidity of the roller without increasing the weight of the roller too much is a technical problem to be solved at present.
SUMMERY OF THE UTILITY MODEL
The utility model provides a four roller rolling devices of multistage continuous rolling bears the moment of flexure that the work roll received through setting up the backing roll, prevents that great deformation from appearing in the work roll, and concrete scheme is as follows:
a multistage continuous rolling four-roller rolling device comprises working rollers and supporting rollers, wherein the working rollers are arranged in pairs, the two working rollers are driven by a driving device to rotate relatively to roll pole pieces, the supporting rollers are arranged on two sides of the working rollers, and the supporting rollers are in contact rotation with the working rollers;
the working roll and the supporting roll are arranged in the same row to form a roll-in group, and the supporting roll is used for bearing the pressure of the pole piece on the working roll;
the rolling groups are at least two rows, and the rolling groups guide the pole pieces through the traction roller and the transition roller.
Optionally, the backup roll has a roll diameter greater than a roll diameter of the work roll.
Optionally, the backup roll is driven to rotate by the work roll.
Optionally, at least one of the support rollers in each roller set is provided with a jacking device for adjusting the position of the support roller.
Optionally, a heating flow channel is arranged inside the body of the working roll and the body of the supporting roll, and heating oil is used for circularly flowing in the heating flow channel.
Optionally, each roller group is correspondingly provided with a floating roller, and the floating roller is driven by a pole piece to generate displacement; and a position signal of the floating roll is obtained through a potentiometer, and a controller controls the rotating speed of the working roll and the traction roll according to a detection signal of the potentiometer.
Optionally, each row of the roller groups is mounted on one frame, and two adjacent frames are fixed into a whole through bolts.
The utility model provides a multistage continuous rolling four-roller rolling device, which comprises working rollers and supporting rollers, wherein the working rollers are arranged in pairs, the two working rollers are driven by a driving device to rotate relatively, and a pole piece passes through between the two working rollers to complete rolling; the working rolls and the supporting rolls are arranged in the same row to form a roll group, each row of working rolls and the supporting rolls are one roll group, the supporting rolls are used for bearing the pressure of the pole pieces to the working rolls, the supporting rolls are in contact with the working rolls and rotate along with the working rolls, the supporting rolls can support the working rolls at any moment, and the working rolls and the supporting rolls bear the pressure of the pole pieces during rolling; and the rolling groups are at least two rows to realize two-stage or multi-stage rolling operation, the rolling groups guide the pole pieces through the traction roller and the transition roller, the pole pieces are in contact with the transition roller, and the trend of the pole pieces is limited by the transition roller. The utility model discloses a four roller rolling device of multistage continuous rolling sets up two work rolls and two backing rolls in every roll-in group, and the pole piece is every to set up two running rollers at least, supports the pressure that the pole piece produced jointly, effectively prevents that the middle part of the work roll of direct and pole piece contact from receiving pressure deformation, prevents that the thin phenomenon of thick both sides in the middle of the pole piece appears.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a multistage tandem rolling four-roll rolling device provided by the present invention.
The figure includes:
the device comprises a working roll 1, a supporting roll 2, a transition roll 3, a floating roll 4, a frame 5 and a traction roll 6.
Detailed Description
The core of the utility model lies in providing a four roller rolling device of multistage continuous rolling, bears the moment of flexure that the working roll received through setting up the backing roll, prevents that great deformation from appearing in the working roll.
In order to make those skilled in the art better understand the technical solution of the present invention, the multi-stage continuous rolling four-roller rolling device of the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, for the utility model provides a four roller rolling device of multistage continuous rolling's structural schematic, this four roller rolling device of multistage continuous rolling include the working roll 1 that sets up in pairs and the backing roll 2 that sets up in pairs, and a pair of working roll 1 and a pair of backing roll 2 set up with arranging to constitute a roll-in group, and a roll-in group includes four running rollers, and two working roll 1's structural dimension equals, and two backing roll 2's structural dimension equals.
The two working rollers 1 are driven by the driving device to rotate relatively, the two working rollers 1 are close to each other, a slit is reserved in the center, the slit is used for penetrating through a pole piece, and the pole piece is rolled when passing through the two working rollers 1.
When passing the pole piece between the work roll 1, the pole piece receives the roll-in effort of work roll 1, thickness reduces, correspondingly, the pole piece exerts the reaction force to work roll 1, make work roll 1 take place to warp, because the span of work roll is big, the middle part is easily bent and is out of shape, the backing roll 2 that sets up through work roll 1 both sides bears the pressure of pole piece to work roll 1, the both sides of pole piece set up a work roll 1 and a backing roll 2 respectively, bear the reaction force that the pole piece produced through two running rollers, higher intensity has, the work roll is difficult for appearing warping, be favorable to realizing better roll-in effect, the pole piece middle part after 1 roll-in through the work roll is even unanimous with the thickness of both sides part, the processingquality is higher.
The utility model provides a roll-in group is two rows at least, and figure 1 shows that three rows of roll-in groups set up transition roller 3 and carry over pinch rolls 6 between the roll-in group, and carry over pinch rolls 6 provides the power of pole piece motion, and transition roller 3 is used for guiding the direction of motion of pole piece, and transition roller 3 and pole piece contact make the pole piece transmit between two adjacent roll-in groups, play guide and guide effect.
The utility model discloses a four roller rolling device of multistage continuous rolling sets up two work rolls 1 and two backing rolls 2 in every roll-in group, and the pole piece is every to set up two running rollers at least, bears the pressure that the pole piece produced jointly, effectively prevents that the middle part of the work roll 1 of direct and pole piece contact from receiving pressure deformation, prevents that the thin phenomenon of thick both sides in the middle of the pole piece appears. The multi-stage rolling group is arranged to realize the multi-time rolling processing, and the pole piece is formed by multiple times of rolling, so that the phenomenon that the working roller 1 is greatly deformed due to overlarge deformation amplitude of one-time rolling of the pole piece can be avoided, and overlarge pressure can not be generated on the working roller; the intervals between the working rollers 1 in each stage of rolling group are arranged from large to small in sequence, so that the pole pieces are rolled step by step in sequence.
Through setting up work roll 1 and backing roll 2, can improve bending strength, the size of running roller can not excessively increase simultaneously, plays the effect that reduces the whole weight of device.
On the basis of the scheme, the utility model discloses well backing roll 2's roller footpath is greater than work roll 1's roller footpath. In general, the ratio of the roll diameter of the work roll to that of the back-up roll is 3:5, and the roll diameter of the work roll is 300mm, and the roll diameter of the back-up roll is 500 mm. The backing roll has bigger roller footpath, can provide bigger holding power, can set up littleer with the roller footpath of the work roll of pole piece contact, convenient processing and assembly transportation.
Preferably, the supporting roll 2 in the utility model is driven by the working roll 1 to rotate, the supporting roll 2 has no power, and the supporting roll 2 is driven to rotate by the friction force of the working roll 1; two working rolls drive rotatoryly through respective drive arrangement respectively, and working roll 1 and backing roll 2 are hugged closely each other and are driven backing roll 2 and rotate to make backing roll 2 and working roll 1 keep synchronous rotation. Of course, it is also possible to provide the support roller 2 with a corresponding drive, and these embodiments are all included in the scope of the present invention.
Further, the utility model discloses in 2 at least one backing rolls in every roll squeezer set up the jacking device, the jacking device is used for adjusting 2 positions of backing roll, and then adjusts work roll 1's position to change the clearance between two work rolls 1. For example, a ram cylinder can be arranged below the lower support roll and, during operation, the ram cylinder can be pushed up to achieve a suitable gap width between the two work rolls.
On the basis of above-mentioned arbitrary technical scheme and intercombination, the utility model provides an inside heating flow channel that sets up of body of working roll 1 and backing roll 2 is arranged in the heating flow channel to circulate and flow the heating oil. After the upper process is finished, the pole pieces enter the gaps between the working rollers 1 at a certain temperature, and the pole pieces are more easily pressed and deformed by the rollers at a high temperature, so that the acting force applied to the working rollers is reduced; at the inside trompil of the body of working roll 1 and backing roll 2, conduction oil circulation heating, the heater is external, makes working roll 1 and backing roll 2 keep higher temperature, makes things convenient for the roll-in pole piece.
Preferably, each roller group is correspondingly provided with a floating roller 4, the floating rollers 4 and the traction rollers 6 are close to each other, when the tensioning degree of a pole piece is changed, the floating rollers 4 are driven by the pole piece to generate displacement, when the position of the floating rollers is changed, the position signals of the floating rollers 4 are obtained through a potentiometer, and the controller controls the rotating speed of the working roller 1 and the rotation speed of the traction rollers 6 according to the detection signals of the potentiometer.
Assuming that the primary rolling is a main drive, when the upper working roll 1 and the lower working roll 1 rotate actively, the position of the floating roll 4 changes under the action of the tension of a pole piece, the floating roll 4 is connected with a potentiometer to obtain a position signal and feeds the position signal back to a controller PLC, the running speed of the upper working roll and the lower working roll of the secondary rolling is driven to change, the running speed of the primary traction roll 6 is driven to change, the speeds of the secondary traction roll and the upper working roll and the lower working roll are slightly larger than the speeds of the primary traction roll and the upper working roll and the lower working roll, a ratio is preset, and therefore the pole.
Specifically, the utility model provides an every row of roll squeezer group installs on a frame 5, and is fixed as an organic whole through the bolt between two adjacent frames 5. The frame structure is similar to a rolling mill frame, cast steel materials are adopted, all levels of rolling frames are connected into a whole by screws, all levels of rolling groups can be detached independently, and the rolling groups are convenient to process, manufacture, maintain and transport.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. The multistage continuous rolling four-roller rolling device is characterized by comprising working rollers (1) arranged in pairs and supporting rollers (2) arranged in pairs, wherein the two working rollers (1) are driven by a driving device to rotate relatively to roll pole pieces, the supporting rollers (2) are arranged on two sides of the working rollers (1), and the supporting rollers (2) are in contact rotation with the working rollers (1);
the working roll (1) and the supporting roll (2) are arranged in the same row to form a roll group, and the supporting roll (2) is used for bearing the pressure of a pole piece on the working roll (1);
the roller groups are at least two rows, and guide the pole pieces through a traction roller (6) and a transition roller (3).
2. The multi-stage continuous-rolling four-roll rolling mill according to claim 1, characterized in that the roll diameter of the backing roll (2) is larger than the roll diameter of the work roll (1).
3. The multi-stage four-roll rolling mill according to claim 2, characterized in that the back-up rolls (2) are rotated by the work rolls (1).
4. The multi-stage continuous-rolling four-roll rolling mill according to claim 3, characterized in that at least one of the back-up rolls (2) in each of the roll groups is provided with jacking means for adjusting the position of the back-up roll (2).
5. The multi-stage four-roll rolling mill according to any one of claims 1 to 4, characterized in that the bodies of the work rolls (1) and the back-up rolls (2) are internally provided with heating channels for circulating heating oil therein.
6. The multi-stage continuous four-roll rolling device according to claim 5, wherein each roll group is provided with a floating roll (4), and the floating roll (4) is driven by a pole piece to displace; position signals of the floating roll (4) are obtained through a potentiometer, and a controller controls the rotating speed of the working roll (1) and the rotating speed of the traction roll (6) according to detection signals of the potentiometer.
7. The multi-stage four-roll rolling mill according to claim 5, characterized in that each row of roll groups is mounted on one stand (5), and adjacent two stands (5) are fixed together by bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921374085.4U CN210586367U (en) | 2019-08-22 | 2019-08-22 | Multistage tandem rolling four-roller rolling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921374085.4U CN210586367U (en) | 2019-08-22 | 2019-08-22 | Multistage tandem rolling four-roller rolling device |
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| Publication Number | Publication Date |
|---|---|
| CN210586367U true CN210586367U (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921374085.4U Active CN210586367U (en) | 2019-08-22 | 2019-08-22 | Multistage tandem rolling four-roller rolling device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112873943A (en) * | 2021-01-11 | 2021-06-01 | 上海兰钧新能源科技有限公司 | Rolling mechanism |
| CN116885110A (en) * | 2023-08-16 | 2023-10-13 | 广东捷盟智能装备有限公司 | Multistage roll squeezer and multistage roll pressing process |
| WO2024087968A1 (en) * | 2022-10-28 | 2024-05-02 | 上海先导慧能技术有限公司 | Rolling apparatus and dry electrode preparation device |
-
2019
- 2019-08-22 CN CN201921374085.4U patent/CN210586367U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112873943A (en) * | 2021-01-11 | 2021-06-01 | 上海兰钧新能源科技有限公司 | Rolling mechanism |
| WO2024087968A1 (en) * | 2022-10-28 | 2024-05-02 | 上海先导慧能技术有限公司 | Rolling apparatus and dry electrode preparation device |
| CN116885110A (en) * | 2023-08-16 | 2023-10-13 | 广东捷盟智能装备有限公司 | Multistage roll squeezer and multistage roll pressing process |
| CN116885110B (en) * | 2023-08-16 | 2024-05-24 | 广东捷盟智能装备股份有限公司 | Multistage roll squeezer and multistage roll pressing process |
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