Winding device of diaphragm slitter and slitter

Abstract

The object of the present invention is to disclose a winding device and a slitter for a diaphragm slitter, including symmetrically arranged first rubber-coated rollers and second rubber-coated rollers. The first rubber-coated roller is driven by a first servo motor, and the second rubber-coated roller is driven by a second servo motor. The slitting linear velocity of the diaphragm slitter is v, the linear velocity of the first servo motor driving the first rubber-coated roller is (0.99 - 1.01)*v, and the linear velocity of the second servo motor driving the second rubber-coated roller is (0.99 - 1.01)*v. Compared with the prior art, the technical effects of the present invention are as follows: By using the symmetrically arranged first rubber-coated roller and second rubber-coated roller to replace the existing stainless steel roller, the hardness of the roller surface is reduced. When the two ends of a single roll of diaphragm are uneven, by applying different pressures to the two ends of the single roll of diaphragm, the size of the surface of the rubber-coated roller is changed, thereby changing the tension on both sides of the diaphragm to ensure that the two ends of the diaphragm are flush.

Description

Technical Field

[0001] The present invention relates to the technical field of battery separator manufacturing, in particular to a winding device and a slitter for a separator. Background Art

[0002] The small-width battery separator slitter is suitable for slitting a separator roll with an incoming width exceeding 1000 mm into separator rolls with a width of 40 mm - 300 mm. When slitting with a small width, the end faces of the single-roll separator material after slitting need to be flush, and there should be no concave surface or edge collapse on the film surface, which requires a very high precision of the slitter.

[0003] Currently, the winding roller used in the winding part of the small-width battery separator slitter is a stainless steel roller. The main problems are that the surface precision and parallelism requirements for the stainless steel roller are very high, the processing difficulty is large, and the cost is high; in addition, when the end face of the separator roll is uneven, the surface flatness of the stainless steel roller and its parallelism with other rollers cannot be adjusted, and it cannot adapt to the slitting of high-precision and small-width separators.

[0004] In view of this, it is necessary to develop a winding device and a slitter for a separator to overcome the above defects. Summary of the Invention

[0005] To solve the above technical problems, the purpose of the present invention is to disclose a winding device and a slitter for a separator. By replacing the existing stainless steel roller with a rubber-coated roller and providing a servo motor specifically for the rubber-coated roller, and then adjusting the pressure of the pressure wheel and the linear speed of the rubber-coated roller through the servo motor, the two ends of the small-width separator roll are ensured to be flush.

[0006] The first object of the present invention is to develop a winding device for a separator slitter.

[0007] The second object of the present invention is to develop a small-width battery separator slitter.

[0008] To achieve the above first object of the invention, the present invention provides a winding device for a separator slitter, including symmetrically arranged first and second rubber-coated rollers. The first rubber-coated roller is driven by a first servo motor, and the second rubber-coated roller is driven by a second servo motor;

[0009] The slitting linear speed of the separator slitter is v, the linear speed of the first servo motor driving the first rubber-coated roller is (0.99 - 1.01)*v, and the linear speed of the second servo motor driving the second rubber-coated roller is (0.99 - 1.01)*v.

[0010] Preferably, it further includes a winding unit, and the winding unit includes a first pressure wheel, a second pressure wheel, and a separator roll sandwiched between the first pressure wheel and the second pressure wheel;

[0011] The first pressing wheel is arranged on the first swing arm, the first swing arm is hinged to the first sliding seat, a first air cylinder is arranged on the first sliding seat, and the first air cylinder drives the protruding part of the first swing arm with the first sliding seat as a fulcrum;

[0012] The second pressing wheel is arranged on the second swing arm, the second swing arm is hinged to the second sliding seat, a second air cylinder is arranged on the second sliding seat, and the second air cylinder drives the protruding part of the second swing arm with the second sliding seat as a fulcrum;

[0013] The first sliding seat and the second sliding seat are arranged on the sliding table.

[0014] Preferably, the first air cylinder is controlled by a first solenoid valve, and the second air cylinder is controlled by a second solenoid valve.

[0015] Preferably, the first servo motor drives the first rubber-coated roller through a first harmonic reducer; the second servo motor drives the second rubber-coated roller through a second harmonic reducer.

[0016] Preferably, a first dust-removing assembly is arranged on the first rubber-coated roller, and a second dust-removing assembly is arranged on the second rubber-coated roller.

[0017] Preferably, the first dust-removing assembly includes a first dust-removing roller and a second dust-removing roller, the surface of the second dust-removing roller is wrapped with dust-removing tapes arranged in layers, and the dust-removing tapes are connected by dot tangents.

[0018] Preferably, the second dust-removing assembly includes a third dust-removing roller and a fourth dust-removing roller, the surface of the fourth dust-removing roller is wrapped with dust-removing tapes arranged in layers, and the dust-removing tapes are connected by dot tangents.

[0019] Preferably, the Shore hardness of the surfaces of the first rubber-coated roller and the second rubber-coated roller is 50-65.

[0020] Preferably, air cylinders are respectively arranged at both ends of the second dust-removing roller, and the air cylinders drive the second dust-removing roller to contact or disengage from the first dust-removing roller.

[0021] Based on the same inventive principle, to achieve the above second inventive purpose, the present invention provides a small-width battery separator slitter, including the winding device of the separator slitter as described in the first inventive creation.

[0022] Compared with the prior art, the technical effects of the present invention are as follows:

[0023] (1) By replacing the existing stainless steel rollers with symmetrically arranged first and second rubber-coated rollers, the hardness of the roller surface is reduced. When the two ends of a single roll of diaphragm are uneven, by applying different pressures to the two ends of the single roll of diaphragm, the size of the surface of the rubber-coated roller is changed, thereby changing the tension on both sides of the diaphragm to ensure that the two ends of the diaphragm are flush. Since the surface hardness of the rubber-coated roller is relatively low, it provides a basis for adjusting its surface size by pressure.

[0024] (2) Usually, the same motor and belt are used to drive the rollers of the slitter, ensuring that the rollers of the slitter maintain the same linear speed. However, if the stainless steel roller in contact with the diaphragm roll maintains the same linear speed, it will cause the end faces of the two ends of the diaphragm roll to be disordered and cannot ensure being flush. Therefore, the first rubber-coated roller and the second rubber-coated roller of the present invention are respectively driven by a first servo motor and a second servo motor, so that the linear speeds of the first rubber-coated roller and the second rubber-coated roller can be finely adjusted, and the adjustment range is 0.99 to 1.01 times the slitting linear speed, that is, the tension of the diaphragm is finely adjusted by the linear speeds of the first rubber-coated roller and the second rubber-coated roller. This setting provides a basis for ensuring the flush appearance end face of the diaphragm roll by finely adjusting the linear speeds of the first rubber-coated roller and the second rubber-coated roller. Description of the Drawings

[0025] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 It is a three-dimensional structural schematic diagram of the winding device of the present invention.

[0027] Figure 2 It is a schematic diagram of the driving principle of the winding device of the present invention.

[0028] Figure 3 It is a three-dimensional structural schematic diagram of the dust-removing roller and the cylinder of the present invention.

[0029] Figure 4 It is a three-dimensional structural schematic diagram of the winding unit of the winding device of the present invention.

[0030] Among them, 1. The first rubber-coated roller; 11. The first dust-removing component; 111. The first dust-removing roller; 112. The second dust-removing roller; 113. The air cylinder; 2. The second rubber-coated roller; 21. The second dust-removing component; 211. The third dust-removing roller; 212. The fourth dust-removing roller; 3. The first servo motor; 31. The first harmonic reducer; 4. The second servo motor; 41. The second harmonic reducer; 5. The first pressure roller; 51. The first swing arm; 511. The protrusion; 52. The first sliding seat; 53. The first air cylinder; 6. The second pressure roller; 61. The second swing arm; 611. The protrusion; 62. The second sliding seat; 63. The second air cylinder; 7. The sliding table. Detailed implementation manners

[0031] The present invention will be described in detail below in conjunction with the various implementation manners shown in the drawings. It should be noted, however, that these implementation manners are not limitations on the present invention, and any equivalent transformation or substitution in terms of function, method, or structure made by those of ordinary skill in the art based on these implementation manners shall fall within the protection scope of the present invention.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present invention.

[0033] Embodiment 1

[0034] Refer Figures 1 to 4 As shown, this embodiment discloses a specific implementation manner of a winding device for a diaphragm slitter.

[0035] The winding device for a diaphragm slitter, refer Figures 1 to 4 As shown, it includes symmetrically arranged first rubber-coated roller 1 and second rubber-coated roller 2. The first rubber-coated roller 1 is driven by the first servo motor 3, and the second rubber-coated roller 2 is driven by the second servo motor 4. The slitting linear speed of the diaphragm slitter is v, the linear speed of the first servo motor 3 driving the first rubber-coated roller 1 is (0.99 - 1.01)*v, and the linear speed of the second servo motor 4 driving the second rubber-coated roller 2 is (0.99 - 1.01)*v.

[0036] Specifically, the winding roller of the existing small-width battery separator slitter is made of stainless steel and cannot be speed-regulated independently, resulting in uneven ends of the wound separator, which is not aesthetically pleasing. To achieve a flat and aesthetically pleasing end face of the separator roll, very high processing accuracy and parallelism requirements are imposed on the stainless steel roller of the existing small-width battery separator slitter, leading to a high cost for a single slitter. To overcome the above defects, refer to Figure 1 and Figure 2 , the technical solution adopted in this embodiment is as follows: The first rubber-coated roller 1 and the second rubber-coated roller 2 are symmetrically arranged, so that the small-width separator after slitting is wound at intervals in a crosswise manner, and the Shore hardness of the surfaces of the first rubber-coated roller 1 and the second rubber-coated roller 2 is 50-65, with a relatively soft texture and being easily deformed under pressure; at the same time, the first rubber-coated roller 1 and the second rubber-coated roller 2 are respectively driven by the first servo motor 3 and the second servo motor 4, so that the linear speed of the first rubber-coated roller 1 is (0.99-1.01) times the slitting linear speed, and the linear speed of the second rubber-coated roller 2 is (0.99-1.01) times the slitting linear speed. For example, when the operator finds that the end face of the small-width separator roll is uneven, the linear speed of the first servo motor 3 or the second servo motor 4 can be adjusted, such as winding at 1.005 times the slitting linear speed, so that the linear speed of the first rubber-coated roller 1 or the second rubber-coated roller 2 is slightly greater than the slitting linear speed, to improve the flatness and aesthetic degree of the end face of the small-width separator roll.

[0037] In addition to adopting the above technical solutions of the rubber-coated rollers and adjusting the linear speed, this embodiment also adopts applying pressure to change the surface shape and size of the rubber-coated rollers, which is equivalent to adjusting the parallelism of the rubber-coated rollers, thereby changing the tension on both sides of the separator and realizing equal-tension winding of each point of the separator, preventing unevenness at both ends of the separator roll. The specific technical solution is as follows: Refer to Figure 1 and Figure 4, rewinding units are respectively arranged on one sides of the first rubber-covered roller 1 and the second rubber-covered roller 2. Taking the rewinding unit on the side of the first rubber-covered roller 1 as an example, the rewinding unit includes a first pressing wheel 5, a second pressing wheel 6, and a diaphragm roll clamped between the first pressing wheel 5 and the second pressing wheel 6; the first pressing wheel 5 is arranged on a first swing arm 51, the first swing arm 51 is hinged to the first sliding seat 52, a first air cylinder 53 is arranged on the first sliding seat 52, and the first air cylinder 53 drives a protruding part 511 of the first swing arm 51 with the first sliding seat 52 as a fulcrum, so that the first swing arm 51 contacts or moves away from the first rubber-covered roller 1. When an operator observes that the flatness of the diaphragm end face is insufficient, for example, when it is necessary to increase the pressure of the first pressing wheel 5 on the first rubber-covered roller 1, the output force of the first air cylinder 53 is adjusted, so that the local pressure of the first rubber-covered roller 1 close to the first pressing wheel 5 increases and deforms, thereby adjusting the flatness of the diaphragm roll end face; Similarly to the first pressing wheel 5, the second pressing wheel 6 is arranged on a second swing arm 61, the second swing arm 61 is hinged to the second sliding seat 62, a second air cylinder 63 is arranged on the second sliding seat 62, and the second air cylinder 63 drives a protruding part 611 of the second swing arm 61 with the second sliding seat 62 as a fulcrum, so that the second swing arm 61 contacts or moves away from the second rubber-covered roller 2. When an operator observes that the flatness of the diaphragm end face is insufficient, for example, when it is necessary to increase the pressure of the second pressing wheel 6 on the second rubber-covered roller 2, the output force of the second air cylinder 63 is adjusted, so that the local pressure of the second rubber-covered roller 2 close to the second pressing wheel 6 increases and deforms, thereby adjusting the flatness of the diaphragm roll end face; the first sliding seat 52 and the second sliding seat 63 are arranged on a slide table 7; through this embodiment, the first air cylinder 53 is controlled by a first electromagnetic valve, and the second air cylinder 63 is controlled by a second electromagnetic valve, that is, each air cylinder is controlled by an independent electromagnetic valve, different pressures are applied to both ends of the diaphragm roll, and by changing the shape of the rubber-covered roller, the diaphragm roll is kept parallel to the deformed rubber-covered roller, thereby realizing the flat and beautiful end face of the diaphragm roll.

[0038] Compared with the high processing requirements for the processing accuracy and parallelism of the existing stainless steel rewinding rollers, the technical solution of this embodiment can be flexibly adjusted according to the actual situation, and the manufacturing cost and the cost of the rollers are greatly reduced; through the combined action and mutual cooperation of the linear speed adjustment, the material of the rubber-covered roller, and the deformation of the rubber-covered roller, the diaphragm roll is always rewound under sufficient tension and with the diaphragm roll parallel to the rubber-covered roller, thereby ensuring the flatness and beauty of the outer end face of the diaphragm roll.

[0039] It should be further noted that, see Figure 2, the first servo motor 3 drives the first rubber-coated roller 1 through the first harmonic reducer 31; the second servo motor 4 drives the second rubber-coated roller 2 through the second harmonic reducer 41, and the harmonic reducer has the characteristic of high transmission accuracy; the high-precision transmission of the first harmonic reducer 31 can make the linear speed of the first rubber-coated roller 1 be (0.99 - 1.01) times the cutting linear speed, that is, achieve high-precision fine-tuning of the linear speed; the high-precision transmission of the second harmonic reducer 41 can make the linear speed of the second rubber-coated roller 2 be (0.99 - 1.01) times the cutting linear speed, that is, achieve high-precision fine-tuning of the linear speed.

[0040] See Figure 1 , in order to prevent diaphragm chips, dust, etc. from adhering to the surfaces of the first rubber-coated roller 1 and the second rubber-coated roller 2 during the winding process, the first rubber-coated roller 1 is provided with a first dust-removing assembly 11, and the second rubber-coated roller 2 is provided with a second dust-removing assembly 21; the first dust-removing assembly 11 includes a first dust-removing roller 111 and a second dust-removing roller 112, and the surface of the second dust-removing roller 112 is wrapped with dust-removing tapes arranged in layers, and the dust-removing tapes are connected by dot tangents; the second dust-removing assembly 21 includes a third dust-removing roller 211 and a fourth dust-removing roller 212, and the surface of the fourth dust-removing roller 212 is wrapped with dust-removing tapes arranged in layers, and the dust-removing tapes are connected by dot tangents; the first dust-removing roller 111 adheres to the first rubber-coated roller 1 and adheres the chips, dust, etc. on the surface of the first rubber-coated roller 1 to the surface of the first dust-removing roller 111, and then transfers them to the second dust-removing roller 112, and the surface of the second dust-removing roller 112 is wrapped with dust-removing tapes arranged in layers, and the dust-removing tapes are connected by dot tangents, that is, when the dust-removing tapes work for a period of time, just tear off the outermost dust-removing tape, avoiding replacing the dust-removing roller or cleaning the dust-removing roller; similarly, the third dust-removing roller 211 adheres to the second rubber-coated roller 2 and adheres the chips, dust, etc. on the surface of the second rubber-coated roller 2 to the surface of the third dust-removing roller 211, and then transfers them to the fourth dust-removing roller 212, and the surface of the fourth dust-removing roller 212 is wrapped with dust-removing tapes arranged in layers, and the dust-removing tapes are connected by dot tangents, that is, when the dust-removing tapes work for a period of time, just tear off the outermost dust-removing tape, avoiding replacing the dust-removing roller or cleaning the dust-removing roller.

[0041] It should be further noted that, see Figure 1 , since the small-width diaphragm after slitting is wound by passing through the symmetrically arranged first rubber-coated roller 1 and second rubber-coated roller 2 in a crossed manner, due to space limitations, the first dust-removing assembly 11 is arranged at the lower left of the first rubber-coated roller 1, and the second dust-removing assembly 21 is arranged at the upper left of the second rubber-coated roller 2.

[0042] See Figure 1, cylinders 113 are respectively arranged at both ends of the second dust sticking roller 112, and the cylinders 113 drive the second dust sticking roller 112 to contact or disengage from the first dust sticking roller 111. With this design, the second dust sticking roller 112 can be pressed against the first dust sticking roller 111 when needed. After the dust sticking tape on the outer ring of the second dust sticking roller 112 has been used for a period of time, the second dust sticking roller 112 can be moved away from the first dust sticking roller 111 through the cylinders 113. After tearing off the dust sticking tape on the outer ring, the second dust sticking roller 112 can be moved close to the first dust sticking roller 111 through the cylinders 113 again. Similarly, cylinders 113 are respectively arranged at both ends of the fourth dust sticking roller 212.

[0043] Embodiment 2

[0044] This embodiment provides a small-width battery separator slitter, including the separator slitter winding device described in Embodiment 1, which makes the end faces of both ends of the small-width battery separator roll flush and the appearance neat.

[0045] For the technical solutions of the small-width battery separator slitter disclosed in this embodiment that are the same as those in Embodiment 1, please refer to the description in Embodiment 1 and will not be elaborated here.

Claims

1. The winding device of the diaphragm slitting machine is characterized in that, It includes a first rubber-covered roller and a second rubber-covered roller which are symmetrically arranged. The first rubber-covered roller is driven by a first servo motor, and the second rubber-covered roller is driven by a second servo motor; The cutting line speed of the diaphragm slitter is v. The linear speed of the first servo motor driving the first rubber-covered roller is (0.99 - 1.01)*v, and the linear speed of the second servo motor driving the second rubber-covered roller is (0.99 - 1.01)*v; It further includes a winding unit, which includes a first pressing wheel, a second pressing wheel and a diaphragm roll sandwiched between the first pressing wheel and the second pressing wheel; The first pressing wheel is arranged on a first swing arm. The first swing arm is hinged to a first sliding seat. A first cylinder is arranged on the first sliding seat. The first cylinder drives the protruding part of the first swing arm with the first sliding seat as a fulcrum, so that the first swing arm contacts or moves away from the first rubber-covered roller; The second pressing wheel is arranged on a second swing arm. The second swing arm is hinged to a second sliding seat. A second cylinder is arranged on the second sliding seat. The second cylinder drives the protruding part of the second swing arm with the second sliding seat as a fulcrum, so that the second swing arm contacts or moves away from the second rubber-covered roller; The first sliding seat and the second sliding seat are arranged on a sliding table; The Shore hardness on the surfaces of the first rubber-covered roller and the second rubber-covered roller is 50 - 65.

2. The winding device of the diaphragm slitter according to claim 1, characterized in that, The first cylinder is controlled by a first solenoid valve, and the second cylinder is controlled by a second solenoid valve.

3. The winding device of the diaphragm slitting machine according to claim 1 or 2, characterized in that, The first servo motor drives the first rubber-covered roller through a first harmonic reducer; the second servo motor drives the second rubber-covered roller through a second harmonic reducer.

4. The winding device of the diaphragm slitter according to claim 3, characterized in that, The first rubber-covered roller is provided with a first dust-removing component, and the second rubber-covered roller is provided with a second dust-removing component.

5. The winding device of the diaphragm slitting machine according to claim 4, characterized in that, The first dust-removing component includes a first dust-removing roller and a second dust-removing roller. The surface of the second dust-removing roller is wrapped with dust-removing tapes arranged in layers, and the dust-removing tapes are connected by dot tangents.

6. The winding device of the diaphragm slitting machine according to claim 4, characterized in that, The second dust-removing component includes a third dust-removing roller and a fourth dust-removing roller. The surface of the fourth dust-removing roller is wrapped with dust-removing tapes arranged in layers, and the dust-removing tapes are connected by dot tangents.

7. The winding device of the diaphragm slitter according to claim 5, characterized in that, Cylinders are respectively arranged at both ends of the second dust-removing roller, and the cylinders drive the second dust-removing roller to contact or disengage from the first dust-removing roller.

8. Small-width battery separator slitter, characterized in that, It includes a winding device for a diaphragm slitter as described in any one of claims 1 - 7.

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