CN112893460B - Constant-clearance rolling mechanism and rolling method thereof - Google Patents
Constant-clearance rolling mechanism and rolling method thereof Download PDFInfo
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- CN112893460B CN112893460B CN202110050678.0A CN202110050678A CN112893460B CN 112893460 B CN112893460 B CN 112893460B CN 202110050678 A CN202110050678 A CN 202110050678A CN 112893460 B CN112893460 B CN 112893460B
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- roll shaft
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/16—Adjusting or positioning rolls
- B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
- B21B31/203—Balancing rolls
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/16—Adjusting or positioning rolls
- B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
- B21B31/32—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis by liquid pressure, e.g. hydromechanical adjusting
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- Mechanical Engineering (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention relates to the field of new energy, in particular to a constant-clearance rolling mechanism and a rolling method thereof. According to the constant-gap rolling mechanism and the rolling method thereof, the auxiliary mechanisms are additionally arranged on two sides of the lower roll shaft, when the upper roll shaft and the lower roll shaft are extruded and deformed after pressurization, the stress on two sides is increased when the auxiliary mechanisms on two sides of the lower roll shaft contact the upper roll shaft, the original roll surface which is bent and deformed is regulated after the limiting pressure on two sides, the parallel of the roll surfaces is ensured, the stress on a pole piece is consistent with that on the middle part due to the edge protection of the limiting on two sides, so that the wave of extrusion and deformation, the thickness extremely difference is small, and the single side and the double side can meet the requirements under the control of the constant gap alternately.
Description
Technical Field
The invention relates to the field of new energy, in particular to a constant-gap rolling mechanism and a rolling method thereof.
Background
In the battery pole piece process in the prior art, pole piece compaction is an industry fixing technology application, and the actual compaction value of a negative electrode material in a single-side area can only reach 85% of a design value under the conditions of a conventional battery and low-rate charge and discharge; the double-sided energy reaches 100% of the design value; the problem of low single-side compaction is not obvious, the defect of low single-side compaction is obvious in a quick charging system, lithium precipitation is started firstly in a single-side material area in the circulating process, so that the integral circulation retention rate of the battery is poor, the battery is excessively thick in thickness expansion, the consumption of free electrolyte is too fast, and finally the battery is subjected to circulation water jumping and fails.
In the mode of combining an upper roller shaft and a lower roller shaft in the traditional equipment structure, after a roller is stressed, the roller is deformed, the upper and lower pressure and the left and right deformation are extruded inwards to be deformed, the edge thickness is also reduced, the curved roller surface is arc-shaped, and when small-gap pressing is carried out, the arc-shaped positions on two sides of the roller are contacted and collided, so that the roller is damaged; when the large gap is pressed, the pressed pole piece can not be pressed when the single surface and the double surfaces are alternated, and is instantly drawn, so that two conditions are caused:
1. two sections of small gaps are in contact with and collide with the main roller shaft to damage the main roller shaft, and the two edges of the pressed pole piece are extruded to be enlarged to form wavy edges, so that the thickness range is large;
2. the large gap has the defects that the single side and the double side can not be alternately pressed during rolling, the thickness is uncontrollable, and the lithium battery is failed after the circulation with inconsistent single-side and double-side compaction ratios.
Disclosure of Invention
In order to solve the problems, the invention provides a constant-gap rolling mechanism and a rolling method thereof, which realize the correction of the deformation of a roller surface and the pressure release.
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a rolling mechanism in constant clearance, includes roller, lower roller and complementary unit, complementary unit sets up the left and right sides at roller down respectively, when going up roller and lower roller mutual extrusion, both sides atress increase when the complementary unit at lower roller both ends contacted the roller, complementary unit can carry out the cambered surface callback to the roll surface that keeps roller and lower roller is parallel.
Furthermore, a groove is reserved between the lower roll shaft and the surface of the auxiliary mechanism, and a circular rubber ring is sleeved on the groove; the auxiliary mechanism comprises an outer ring, a mounting ring and a plurality of cylinders, the mounting ring is sleeved at two ends of the lower roller, a groove for accommodating the cylinders is reserved between the mounting ring and the lower roller, the outer ring is arranged at the side end of the groove and is parallel and level with the surface of the mounting ring, the cylinders are fixed between the outer ring and the mounting ring, the position of the mounting ring close to the circular rubber ring is an inclined plane, annular bulges are arranged at two ends of the lower roller, and grooves are formed between the annular bulges and the inclined plane.
Specifically, the transversal triangle-shaped that personally submits of annular bulge, annular bulge upside is located to circular rubber ring, form the mounting groove between annular bulge downside and the lower roller, the installation ring includes horizontal plate and vertical plate, horizontal plate and vertical plate junction are the inclined plane, form the trench that holds the cylinder between horizontal plate and the lower roller, the vertical plate is located on the mounting groove, cylinder horizontal installation is on the installation ring to the drive end is fixed with the vertical plate.
Specifically, the two ends of the lower roll shaft are provided with round steps for fixing the outer ring, and the inner side of the outer ring is sleeved on the round steps and is fixed with the lower roll shaft through screws. Wherein, the highest position of the circular rubber ring is higher than the surface of the lower roller shaft.
Or the auxiliary mechanism comprises a fixed ring, a limiting ring, an inner ring and a hydraulic ring, the fixed ring is sleeved at two ends of the lower roll shaft and fixed with the lower roll shaft, the limiting ring is sleeved on the fixed ring and fixed with the fixed ring, the hydraulic ring is clamped between the limiting ring and the fixed ring and protrudes out of the surfaces of the limiting ring and the fixed ring, and the highest position of the hydraulic ring is higher than the surface of the lower roll shaft in a normal state.
Wherein, the inner ring joint is between spacing collar and retainer plate to be located the hydraulic pressure ring lower extreme, the tip parallel and level of spacing collar and retainer plate.
The rolling method of the constant-gap rolling mechanism is also provided, and comprises the following steps:
s1, after the parameters are set, starting equipment for installing the rolling mechanism;
s2, the pole piece to be pressed penetrates through the space between the upper roller shaft and the lower roller shaft, and the roller shaft extrusion is carried out on the pole piece;
and S3, after pressurization, the upper roller shaft and the lower roller shaft extrude and deform the pole piece, the auxiliary mechanisms at the two ends of the lower roller shaft contact with the two sides of the upper roller shaft, the stress is increased, and the auxiliary mechanisms are adjusted back due to the pressure, so that the parallel roller surfaces are ensured.
Further, in S2, the upper roller shaft is a straight roller and is stationary, and the apparatus operates in such a manner that the lower roller shaft is pressurized.
Further, in S3, after pressurization, the circular rubber rings sleeved at the two ends of the lower roller are pressed by force, and the auxiliary mechanism generates upward pressure on the circular rubber rings when being adjusted back, so as to keep the end faces of the two side shafts parallel, so that the force on the two sides of the pole piece is kept consistent with the force in the middle.
The circular rubber ring is normally higher than the surface of the lower roller shaft at the highest position, and is an elastic rubber ring.
The invention has the beneficial effects that: according to the constant-gap rolling mechanism and the rolling method thereof, the auxiliary mechanisms are additionally arranged on two sides of the lower roll shaft, when the upper roll shaft and the lower roll shaft are extruded and deformed after pressurization, the stress on two sides is increased when the auxiliary mechanisms on two sides of the lower roll shaft contact the upper roll shaft, the original roll surface which is bent and deformed is regulated after the limiting pressure on two sides, the parallel of the roll surfaces is ensured, the stress on a pole piece is consistent with that on the middle part due to the edge protection of the limiting on two sides, so that the wave of extrusion and deformation, the thickness extremely difference is small, and the single side and the double side can meet the requirements under the control of the constant gap alternately.
Drawings
Fig. 1 is a perspective view of the first embodiment.
Fig. 2 is a front view of the first embodiment.
Fig. 3 is a sectional view of the first embodiment.
Fig. 4 is a partial sectional view of the first embodiment.
Fig. 5 is another partial cross-sectional view of the first embodiment.
Fig. 6 is a perspective view of the second embodiment.
Fig. 7 is a sectional view of a second lower roller shaft of the present embodiment.
Fig. 8 is a partial sectional view of a second lower roller shaft of the present embodiment.
The reference numbers illustrate: 1. an upper roll shaft; 2. a lower roll shaft; 21. an annular projection; 22. a round step; 23. mounting grooves; 3. an auxiliary mechanism; 31. an outer ring; 32. a mounting ring; 321. a horizontal plate; 322. a vertical plate; 323. an inclined surface; 33. a cylinder; 34. a slot position; 35. a stationary ring; 36. a limiting ring; 37. an inner ring; 38. a hydraulic ring; 4. a groove; 5. and (4) a circular rubber ring.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description and accompanying drawings. The present application may be embodied in many different forms and is not limited to the embodiments described in the present embodiment. The following detailed description is provided to facilitate a more thorough understanding of the present disclosure, and the words used to indicate orientation, top, bottom, left, right, etc. are used solely to describe the illustrated structure in connection with the accompanying figures.
Example one
Referring to fig. 1-5, the present invention relates to a constant gap rolling mechanism, which includes an upper roll shaft 1, a lower roll shaft 2 and an auxiliary mechanism 3, wherein the auxiliary mechanism 3 is respectively disposed at the left and right sides of the lower roll shaft 2, a groove 4 is left between the lower roll shaft 2 and the auxiliary mechanism 3, and a circular rubber ring 5 is sleeved at the position of the groove 4. Wherein, the circular rubber ring 5 is an elastic rubber ring, and the highest position of the circular rubber ring 5 is 1-3mm higher than the surface of the lower roller shaft in a normal state.
Compared with the prior art, this embodiment rolling mechanism in permanent clearance increases complementary unit 3 in roller both sides down, during roller extrusion deformation about after the pressurization, both sides atress increase when the complementary unit 3 of 2 both sides of lower roll contacted last roller 1, the crooked roll surface that takes place deformation of roll surface originally, the cambered surface has been adjusted back by the amount of deflection after receiving the spacing pressure in both sides, guarantee that the roll surface is parallel, both sides are because of spacing edge protection, make the pole piece atress keep unanimous with the centre, extrusion deformation's wave like this, thickness extremely poor is little, single two-sided can all reach the requirement under the control in permanent clearance in turn.
In this embodiment, please refer to fig. 4-5, the auxiliary mechanism 3 includes an outer ring 31, a mounting ring 32, and a plurality of cylinders 33, the mounting ring 32 is sleeved at two ends of the lower roller shaft 2, a slot 34 for accommodating the cylinder 33 is left between the mounting ring 32 and the lower roller shaft 2, the outer ring 31 is disposed at a side end of the slot 34 and is flush with the surface of the mounting ring 32, the cylinder 33 is fixed between the outer ring 31 and the mounting ring 32, a position of the mounting ring 32 close to the circular rubber ring 5 is an inclined surface 323, two ends of the lower roller shaft 2 are provided with annular protrusions 21, and a groove 4 for disposing the circular rubber ring is formed between the annular protrusions 21 and the inclined surface 323. The two ends of the lower roller shaft 2 are provided with round steps 22 for fixing the outer ring 31, and the inner side of the outer ring 31 is sleeved on the round steps 22 and is fixed with the lower roller shaft 2 through screws.
In addition, the cross section of the annular bulge 21 is triangular, the circular rubber ring 5 is arranged on the upper side of the annular bulge 21, a mounting groove 23 is formed between the lower side of the annular bulge 21 and the lower roller shaft 2, the mounting ring 32 comprises a horizontal plate 321 and a vertical plate 322, the joint of the horizontal plate 321 and the vertical plate 322 is an inclined surface 323, a groove position 34 for accommodating the air cylinder 33 is formed between the horizontal plate 321 and the lower roller shaft 2, the vertical plate 322 is arranged on the mounting groove 23, the air cylinder 33 is horizontally arranged on the mounting ring 32, and the driving end is fixed with the vertical plate 322. In this embodiment, when the upper roller shaft 1 and the lower roller shaft 2 extrude each other, the circular rubber ring 5 can be pressed downwards, so that the stress on both sides is increased when the auxiliary mechanisms 3 at both ends of the lower roller shaft 2 contact the upper roller shaft 1, the arc surface can be adjusted back by the auxiliary mechanisms 3, and the circular rubber ring 5 is pushed by the inclined surface 323 to generate an upward force, so that the roller surfaces of the upper roller shaft 1 and the lower roller shaft 2 are kept parallel.
It should be further noted that the length of the axial surface of the upper roller shaft 1 in this embodiment is greater than the sum of the lengths of the axial surface of the lower roller shaft 2 and the surface of the circular rubber ring 5, but is less than the sum of the lengths of the axial surface of the lower roller shaft 2, the surface of the circular rubber ring 5 and the surface of the auxiliary mechanism 3.
The embodiment also provides a rolling method of the constant-gap rolling mechanism, which comprises the following steps:
s1, after the parameters are set, starting equipment for installing the rolling mechanism;
s2, the pole piece to be pressed penetrates through the space between the upper roller shaft 1 and the lower roller shaft 2, the upper roller shaft 1 is a straight roller and is fixed, the equipment works in a mode of pressing the lower roller shaft 2, and the pole piece is subjected to roller shaft extrusion;
s3, after pressurization, the upper roller shaft 1 and the lower roller shaft 2 extrude and deform the pole piece, the circular rubber ring 5 at two ends of the lower roller shaft 2 is sleeved with the auxiliary mechanism 3, the auxiliary mechanism 3 at two ends of the lower roller shaft 2 is in contact with two sides of the upper roller shaft 1 to be stressed and increased, the cylinder 33 of the auxiliary mechanism 3 is retracted into the mounting ring 32 due to the stress, the circular rubber ring 5 is pushed through the inclined plane 323, the parallel of the roller surface is ensured, and the stress of two sides of the pole piece is kept consistent with the middle.
Example two
Referring to fig. 6 to 8, the present invention relates to a constant gap rolling mechanism, which includes an upper roll shaft 1, a lower roll shaft 2 and auxiliary mechanisms 3, wherein the auxiliary mechanisms 3 are respectively disposed at the left and right sides of the lower roll shaft 2, when the upper roll shaft 1 and the lower roll shaft 2 are squeezed with each other, the forces on the two sides of the lower roll shaft 2 are increased when the auxiliary mechanisms 3 at the two ends of the lower roll shaft 2 contact the upper roll shaft 1, and the auxiliary mechanisms 3 perform adjustment of the arc surface and keep the roll surfaces of the upper roll shaft 1 and the lower roll shaft 2 parallel.
In this embodiment, the auxiliary mechanism 3 includes a fixing ring 35, a limiting ring 36, an inner ring 37 and a hydraulic ring 38, the fixing ring 35 is sleeved at two ends of the lower roller shaft 2 and fixed with the lower roller shaft 2, the limiting ring 36 is sleeved on the fixing ring 35 and fixed with the fixing ring 35, the hydraulic ring 38 is clamped between the limiting ring 36 and the fixing ring 35 and protrudes out of the surfaces of the limiting ring 36 and the fixing ring 35, and the highest position of the hydraulic ring 38 is higher than the surface of the lower roller shaft 2 in a normal state. Wherein, inner ring 37 joint is between spacing collar 36 and retainer plate 35 to be located hydraulic ring 38 lower extreme, the tip parallel and level of spacing collar 36 and retainer plate 35.
The embodiment also provides a rolling method of the constant-gap rolling mechanism, which comprises the following steps:
s1, after the parameters are set, starting equipment for installing the rolling mechanism;
s2, the pole piece to be pressed penetrates through the space between the upper roller shaft 1 and the lower roller shaft 2, the upper roller shaft 1 is a straight roller and is fixed, the equipment works in a mode of pressing the lower roller shaft 2, and the pole piece is subjected to roller shaft extrusion;
s3, after pressurization, the upper roller shaft 1 and the lower roller shaft 2 extrude and deform the pole pieces, the hydraulic rings 38 of the auxiliary mechanisms 3 at the two ends of the lower roller shaft 2 are in contact with the two sides of the upper roller shaft 1 and are stressed to be increased, the hydraulic rings 38 of the auxiliary mechanisms 3 are adjusted back through hydraulic deflection due to pressure, the roller surfaces are ensured to be parallel, and the stress on the two sides of the pole pieces is kept consistent with that in the middle.
It should be further noted that, adding auxiliary mechanisms at both ends of the lower roll shaft 2, such as pneumatic and hydraulic movable sliding cylinders, is within the protection scope of the design of the present invention, and unless otherwise explicitly specified and limited, the terms "connecting", "fixing", "disposing", and the like should be understood in a broad sense, and it is obvious to those skilled in the art that the specific meanings of the above terms in the present invention can be understood according to specific situations.
The above embodiments are merely illustrative of the preferred embodiments of the present invention, and not restrictive, and various changes and modifications to the technical solutions of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are intended to fall within the scope of the present invention defined by the appended claims.
Claims (9)
1. A constant clearance rolling mechanism is characterized in that: the device comprises an upper roll shaft, a lower roll shaft and auxiliary mechanisms, wherein the auxiliary mechanisms are respectively arranged on the left side and the right side of the lower roll shaft, when the upper roll shaft and the lower roll shaft are mutually extruded, the stress on two sides is increased when the auxiliary mechanisms at two ends of the lower roll shaft contact the upper roll shaft, the auxiliary mechanisms can adjust back the cambered surface, and the roll surfaces of the upper roll shaft and the lower roll shaft are kept parallel;
the auxiliary mechanism has the following structure: the mounting ring is sleeved at two ends of the lower roller, a groove for accommodating the cylinder is reserved between the mounting ring and the lower roller, the outer ring is arranged at the side end of the groove and is parallel to the surface of the mounting ring, the cylinder is fixed between the outer ring and the mounting ring, the position of the mounting ring close to the circular rubber ring is an inclined plane, annular bulges are arranged at two ends of the lower roller, a groove is formed between the annular bulges and the inclined plane, and the circular rubber ring is sleeved at the position of the groove.
2. A constant gap rolling mechanism according to claim 1, wherein: the transversal triangle-shaped that personally submits of annular bulge, annular bulge upside is located to circular rubber ring, form the mounting groove between annular bulge downside and the lower roller, the installation ring includes horizontal plate and vertical plate, the horizontal plate is the inclined plane with vertical plate junction, form the trench that holds the cylinder between horizontal plate and the lower roller, the vertical plate is located on the mounting groove, cylinder horizontal installation is on the installation ring to the drive end is fixed with the vertical plate.
3. A constant gap rolling mechanism according to claim 1, wherein: circular steps for fixing the outer ring are reserved at two ends of the lower roll shaft, and the inner side of the outer ring is sleeved on the circular steps and is fixed with the lower roll shaft through screws; the highest position of the circular rubber ring is higher than the surface of the lower roller shaft.
4. A constant clearance rolling mechanism is characterized in that: the device comprises an upper roll shaft, a lower roll shaft and auxiliary mechanisms, wherein the auxiliary mechanisms are respectively arranged on the left side and the right side of the lower roll shaft, when the upper roll shaft and the lower roll shaft are mutually extruded, the stress on two sides is increased when the auxiliary mechanisms at two ends of the lower roll shaft contact the upper roll shaft, the auxiliary mechanisms can adjust back the cambered surface, and the roll surfaces of the upper roll shaft and the lower roll shaft are kept parallel;
the auxiliary mechanism has the following structure: the hydraulic ring is connected between the limiting ring and the fixing ring in a clamping mode and protrudes out of the surfaces of the limiting ring and the fixing ring, and the highest position of the hydraulic ring in a normal state is higher than the surface of the lower roll shaft.
5. A constant gap rolling mechanism according to claim 4, wherein: the inner ring joint is between spacing collar and retainer plate to be located the hydraulic pressure ring lower extreme, the tip parallel and level of spacing collar and retainer plate.
6. A rolling method of a constant-clearance rolling mechanism is characterized in that: the method comprises the following steps:
s1, after the parameters are set, starting equipment for installing the rolling mechanism in the claim 1;
s2, the pole piece to be pressed penetrates through the space between the upper roller shaft and the lower roller shaft, and the roller shaft extrusion is carried out on the pole piece;
and S3, after pressurization, the upper roller shaft and the lower roller shaft extrude and deform the pole piece, the auxiliary mechanisms at the two ends of the lower roller shaft contact with the two sides of the upper roller shaft, the stress is increased, and the auxiliary mechanisms are adjusted back due to the pressure, so that the parallel roller surfaces are ensured.
7. The rolling method of a constant gap rolling mechanism according to claim 6, characterized in that: in S2, the upper roller shaft is a straight roller and is stationary, and the apparatus operates by pressing the lower roller shaft.
8. The rolling method of a constant gap rolling mechanism according to claim 6, characterized in that: in S3, a groove is reserved between the lower roll shaft and the surface of the auxiliary mechanism, and a circular rubber ring is sleeved on the groove; after pressurization, the circular rubber rings sleeved at the two ends of the lower roll shaft are stressed and extruded, and the auxiliary mechanism generates upward pressure on the circular rubber rings during return adjustment, so that the end faces of the two shafts are kept parallel, and the stress on the two sides of the pole piece is kept consistent with that in the middle.
9. The rolling method of a constant gap rolling mechanism according to claim 8, characterized in that: the circular rubber ring is normally higher than the surface of the lower roller shaft at the highest position, and is an elastic rubber ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110050678.0A CN112893460B (en) | 2021-01-14 | 2021-01-14 | Constant-clearance rolling mechanism and rolling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110050678.0A CN112893460B (en) | 2021-01-14 | 2021-01-14 | Constant-clearance rolling mechanism and rolling method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112893460A CN112893460A (en) | 2021-06-04 |
| CN112893460B true CN112893460B (en) | 2021-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110050678.0A Active CN112893460B (en) | 2021-01-14 | 2021-01-14 | Constant-clearance rolling mechanism and rolling method thereof |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200939464Y (en) * | 2005-09-30 | 2007-08-29 | 邢台纳科诺尔极片轧制设备有限公司 | Gap eliminating bend roller mechanism of battery pole piece rolling mill |
| CN101254509B (en) * | 2008-04-15 | 2010-09-22 | 邢台纳科诺尔极片轧制设备有限公司 | Hydraulic servo battery pole piece rolling mill |
| DE102011018874B3 (en) * | 2011-04-28 | 2012-08-30 | Saueressig Gmbh + Co. Kg | Roller arrangement with a device for regulating the nip and method for controlling the nip in a roller assembly |
| CN208991462U (en) * | 2018-07-18 | 2019-06-18 | 惠州市赢合科技有限公司 | A kind of battery pole piece rolling press structure |
| CN211564050U (en) * | 2019-12-27 | 2020-09-25 | 邢台纳科诺尔精轧科技股份有限公司 | Novel roller deflection deformation correction system |
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