Slip shaft of diaphragm slitting machine and slitting machine

Abstract

The application discloses a diaphragm slitting machine slip shaft and the slitting machine, and belongs to the technical field of diaphragm slitting machines. The technical effect is that the plurality of magnets of the magnetic force driving assembly rotates under the driving of the shaft, and when the aluminum ring cuts the magnetic induction lines of the plurality of magnets, new magnetic induction lines are formed due to the eddy current, the interaction of the two groups of magnetic induction lines drives the gear outer ring to rotate, and then the winding assembly is driven, so that the tension of each diaphragm roll is kept consistent.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery separator manufacturing, in particular to a separator slitting machine slip shaft and the slitting machine. BACKGROUND

[0002] The small-width battery separator slitting machine is suitable for slitting the separator roll with a width of more than 1000 mm into a separator roll with a width of 40-300 mm. After the slitting of the small-width separator, the small separator rolls are simultaneously wound up. On the one hand, the tension of the small separator rolls must be consistent, otherwise the tension of some of the small separator rolls will be loose and that of some will be tight, resulting in unqualified winding of the separator. On the other hand, as the separator is wound up, the separator roll gradually becomes larger, the winding line speed remains unchanged, but the winding tension is constantly decreasing. Therefore, the winding tension needs to be adjusted in real time to ensure that the winding line speed is constant.

[0003] At present, the winding part of the small-width battery separator slitting machine has the problem that the winding tension of different rolls is inconsistent, and there is also a defect in keeping the line speed unchanged.

[0004] Therefore, it is necessary to develop a separator slitting machine slip shaft and the slitting machine to overcome the above-mentioned defects. SUMMARY

[0005] To solve the above-mentioned technical problems, the purpose of the present application is to disclose a separator slitting machine slip shaft and the slitting machine. The core shaft is rotated to drive the rotation of the plurality of magnets, and the aluminum ring forms a driving force by cutting the magnetic induction lines of the magnets to drive the rotation of the gear outer ring, so that the driving force received by different positions of the gear outer ring is consistent, thereby ensuring that the winding tension of different separator rolls is consistent.

[0006] The first purpose of the present application is to develop a separator slitting machine slip shaft.

[0007] The second purpose of the present application is to develop a small-width battery separator slitting machine.

[0008] To achieve the above-mentioned first purpose, the present application provides a separator slitting machine slip shaft, which comprises a core shaft and a plurality of magnetic force driving assemblies arranged along the axial direction of the core shaft.

[0009] The magnetic force driving assembly comprises a gear outer ring, a stop inner ring, a fixed inner ring and a bearing. The stop inner ring comprises a horizontal surrounding part and a vertical stop part. The fixed inner ring is provided with an annular cavity. An aluminum ring, a plurality of magnets, a magnet fixing ring and a magnet adsorption ring are sequentially arranged in the annular cavity. The magnet fixing ring is provided with a plurality of hollow parts, which correspond to the magnets.

[0010] The aluminum ring is bonded to the vertical stop part by high-temperature resistant glue, and the magnet fixing ring and the magnet adsorption ring are fixed to the fixed inner ring.

[0011] Preferably, the plurality of magnets are circumferentially distributed along the magnet fixing ring, and the plurality of magnets are arranged by N-pole magnets and S-pole magnets.

[0012] Preferably, the plurality of hollow parts are four in number and evenly distributed along the magnet fixing ring, and screw fixing holes are arranged between adjacent hollow parts.

[0013] Preferably, the magnet fixing ring is made of stainless steel.

[0014] Preferably, the magnet adsorption ring is made of 45 steel.

[0015] Preferably, the surface of the aluminum ring is smooth, and the surface roughness of the aluminum ring is less than 1 microns.

[0016] Preferably, the surface of the aluminum ring is smooth, and the gap between the aluminum ring and the magnet is 0.5mm-3mm, and the parallelism of the aluminum ring and the magnet is 0.02.

[0017] Preferably, the gear outer ring drives the diaphragm winding assembly.

[0018] Preferably, the diaphragm winding assembly comprises a sliding base, a transmission gear, a swing arm, and a winding wheel, the swing arm is hinged to the sliding base, the winding wheel is rotatably arranged at the top end of the swing arm, and the transmission gear is engaged with the gear outer ring, and the transmission gear drives the winding wheel through a belt.

[0019] The swing arm is provided with a protruding part driven by a cylinder to swing the swing arm, and the cylinder is pivoted at the sliding base.

[0020] Based on the same inventive principle, in order to achieve the above-mentioned second invention purpose, the application provides a small-width battery diaphragm slitting machine comprising a diaphragm slitting machine slip shaft as described in the first invention.

[0021] Compared with the prior art, the technical effects of the application are as follows:

[0022] (1) By arranging a plurality of magnetic force driving assemblies on the mandrel, the plurality of magnets of the magnetic force driving assembly rotate under the driving of the mandrel, and when the aluminum ring cuts the magnetic induction lines of the plurality of magnets, new magnetic induction lines are formed due to the eddy current, and the interaction of the two groups of magnetic induction lines drives the rotation of the gear outer ring, and in turn drives the winding assembly; since each magnetic force driving assembly is configured identically, the external output driving force of each magnetic force driving assembly is the same, which ensures that the tension of each diaphragm roll remains consistent, thereby achieving consistent tension of each diaphragm roll winding.

[0023] (2) The magnetic driving assembly is driven by cutting the magnetic induction lines by the aluminum ring. The aluminum ring is light in weight, low in cost, not easy to be corroded, easy to be processed and not magnetic, which can ensure the stable operation of the sliding shaft.

[0024] (3) The aluminum ring is bonded to the vertical stop part by high-temperature resistant glue, so that both surfaces of the aluminum ring are kept smooth without protruding parts or concave holes, the aluminum ring cuts the magnetic induction lines uniformly, and the external driving force of the magnetic driving assembly is stable. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0026] Figure 1 is a schematic diagram of the three-dimensional structure of the sliding shaft of the present application.

[0027] Figure 2 is a schematic diagram of the axial cross-sectional structure of the sliding shaft of the present application.

[0028] Figure 3 is a schematic diagram of the longitudinal cross-sectional structure of the sliding shaft of the present application.

[0029] Figure 4 is a schematic diagram of the side view structure of the diaphragm winding assembly of the present application.

[0030] Figure 5 is a schematic diagram of the three-dimensional structure of the diaphragm winding assembly of the present application.

[0031] Figure 6 is a schematic diagram of the three-dimensional structure of the magnet fixing ring of the present application.

[0032] Figure 7 is a schematic diagram of the three-dimensional structure of the magnet adsorption ring of the present application.

[0033] Wherein, 1, mandrel; 2, magnetic driving assembly; 21, gear outer ring; 22, stop inner ring; 221, horizontal surrounding part; 222, vertical stop part; 23, fixed inner ring; 231, annular cavity; 24, bearing; 3, aluminum ring; 4, magnet; 5, magnet fixing ring; 51, hollow part; 52, screw fixing hole; 6, magnet adsorption ring; 7, diaphragm winding assembly; 71, sliding base; 72, transmission gear; 73, swing arm; 74, winding wheel; 75, protruding part; 76, air cylinder; 8, winding shaft. DETAILED DESCRIPTION

[0034] The present application will be described in detail below with reference to the embodiments shown in the drawings, but it should be noted that these embodiments are not a limitation on the present application, and equivalent transformations or substitutions of function, method, or structure made by those of ordinary skill in the art based on these embodiments are within the scope of the present application.

[0035] In the description of the present application, 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", and the like 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 application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0036] Embodiment 1

[0037] Referring to Figures 1 to 7 , the present embodiment discloses a specific implementation of a slip shaft of a diaphragm slitting machine.

[0038] The slip shaft of the diaphragm slitting machine, referring to Figures 1 to 7 , comprises a mandrel 1 and a plurality of magnetic force driving assemblies 2 arranged along the axial direction of the mandrel; the magnetic force driving assembly 2 comprises a gear outer ring 21, a stop inner ring 22, a fixed inner ring 23, and a bearing 24, the stop inner ring 22 comprises a horizontal surrounding part 221 and a vertical stop part 222, the fixed inner ring 23 is provided with an annular cavity 231, an aluminum ring 3, a plurality of magnets 4, a magnet fixing ring 5, and a magnet adsorption ring 6 are sequentially arranged in the annular cavity 231, the magnet fixing ring 5 is provided with a plurality of hollow parts 51, which are correspondingly arranged with the magnets 4; the aluminum ring 3 is bonded to the vertical stop part 222 by high-temperature resistant glue, and the magnet fixing ring 5 and the magnet adsorption ring 6 are fixed to the fixed inner ring 23.

[0039] Specifically, referring to Figure 2 , the height of the magnet 4 is higher than the hollow part 51, i.e. the magnet 4 protrudes from the magnet fixing ring 5, so that the distance between the magnet fixing ring 5 and the aluminum ring 3 is as close as possible; referring to Figure 3 and Figure 6 , the hollow parts 51 of the magnet fixing ring 5 are four in number and are uniformly distributed along the magnet fixing ring 5, the hollow part 51 is an arc-shaped waist hole, and a screw fixing hole 52 is arranged between adjacent hollow parts 51; referring to Figure 3, several of the magnets 4 are distributed circumferentially along the magnet fixing ring 5, several of the magnets 4 are arranged with N-pole magnets and S-pole magnets being spaced, four magnets are arranged in the hollow part 51 of each arc-shaped waist hole, and the four magnets are arranged with N-pole magnets and S-pole magnets being spaced. Figure 2 、 Figure 6 and Figure 7 The screw passes through the fixing hole 52 to fix the magnet fixing ring 5 and the magnet adsorbing ring 6 to the fixed inner ring 23. The magnet fixing ring is made of stainless steel and is non-magnetic. The magnet adsorbing ring 6 is made of 45 steel and adsorbs and fixes the magnets 4. When the mandrel 1 rotates, the magnets 4 can be stably driven to rotate synchronously.

[0040] The working principle of the slip shaft is as follows: a plurality of magnetic drive assemblies 2 are arranged on the mandrel 1, and the plurality of magnets 4 of the magnetic drive assembly 2 rotate under the driving of the mandrel 1. When the aluminum ring 3 cuts the magnetic induction lines of the plurality of magnets, eddy currents are generated to form new magnetic induction lines. The interaction between the two groups of magnetic induction lines drives the gear outer ring 21 to rotate, thereby driving the winding assembly. Since each magnetic drive assembly is configured identically, the external output driving force of each magnetic drive assembly is the same, ensuring that the tension of each diaphragm roll remains consistent, thereby achieving consistent tension of each diaphragm roll during winding. In addition, the aluminum ring 3 is bonded to the vertical stop 222 by high-temperature-resistant glue, so that both surfaces of the aluminum ring 3 remain smooth without protrusions or recesses, ensuring uniform cutting of the magnetic induction lines by the aluminum ring, thereby stabilizing the external driving force of the magnetic drive assembly.

[0041] In order to ensure that the aluminum ring 3 cuts the magnetic induction lines more uniformly, the surface of the aluminum ring 3 is smooth, and the surface roughness of the aluminum ring 3 is less than 1 micrometer, which stabilizes the external driving force of the magnetic drive assembly. In addition, in order to prevent the aluminum ring 3 from being displaced after repeatedly cutting the magnetic induction lines, causing the magnets 4 to be worn and affecting the service life of the slip shaft, in theory, the smaller the gap between the aluminum ring 3 and the magnets 4 and the smaller the parallelism between the aluminum ring 3 and the magnets 4, the greater the external driving force of the aluminum ring 3. However, too small a gap will cause wear or interference between the aluminum ring 3 and the magnets 4. In order to reduce wear or interference and ensure that the external driving force of the slip shaft is greater, the gap between the aluminum ring 3 and the magnets 4 is 0.5mm-3mm, preferably 1mm, and the parallelism between the aluminum ring 3 and the magnets 4 is 0.02. Under the above parameters, there is no wear or interference between the aluminum ring 3 and the magnets 4, and the external output driving force is maximized.

[0042] The working principle of the diaphragm winding assembly of the present embodiment is as follows: Figure 4 and Figure 5, the gear outer ring 21 drives the diaphragm winding assembly 7, the diaphragm winding assembly 7 includes a sliding base 71, a transmission gear 72, a swing arm 73, a winding wheel 74, the swing arm 73 is hinged to the sliding base 71, the winding wheel 74 is rotatably arranged at the top end of the swing arm 73, the transmission gear 72 is engaged with the gear outer ring 21, and the transmission gear 72 drives the winding wheel 74 through a belt. Specifically, during specific winding, winding is performed by two groups of facing diaphragm winding assemblies 7, and the two ends of the diaphragm roll are cooperatively wound by the two winding wheels 74 facing each other, the power of the two groups of facing diaphragm winding assemblies 7 comes from the same sliding shaft, so that the winding force and the winding speed of the two groups of facing diaphragm winding assemblies 7 remain consistent; the swing arm 73 is provided with a protruding portion 75, the protruding portion 75 is driven by a gas cylinder 76 to realize swinging of the swing arm 73, the gas cylinder 76 takes the sliding base 71 as a fulcrum, when the gas rod of the gas cylinder 76 extends, the swing arm 73 is swung to abut against the winding shaft 8 by pushing the protruding portion 75, and when the gas rod of the gas cylinder 76 retracts, the swing arm 73 is swung away from the winding shaft 8 by pulling the protruding portion 75.

[0043] In the winding process, that is, after the small-width diaphragm is slit, through the embodiment, the participation Figure 5 On the one hand, the gear outer ring 21 is driven by the same magnetic drive assembly 2, the gear outer ring 21 engages the transmission gear 72, drives a group of diaphragm winding assemblies 7, so that the external winding force of different groups of diaphragm winding assemblies 7 is consistent at the same time point, and each diaphragm roll remains consistent in tightness; in addition, as the diaphragm is wound, the diaphragm roll gradually becomes larger, and under the condition that the winding line speed remains unchanged, the winding tension is constantly reduced, at this time, the external driving force of the gear outer ring 21 is reduced in real time by reducing the rotating speed of the servo motor driving shaft, the winding tension is adjusted in real time according to the change of the outer circumferential size of the diaphragm roll, which is stable and reliable, and overcomes the defects of the prior art.

[0044] Embodiment 2

[0045] The embodiment provides a small-width battery diaphragm slitting machine, which comprises the diaphragm slitting machine sliding shaft as described in embodiment 1, so that the small-width battery diaphragm roll is stably wound, and the winding tension is adjusted in real time under the condition of constant-speed winding.

[0046] The small-width battery diaphragm slitting machine disclosed in the embodiment has the same technical solutions as those in embodiment 1, please refer to the description in the embodiment, which will not be repeated here.

Claims

1. A slip shaft for a diaphragm slitting machine, characterized in that, It includes a mandrel and a plurality of magnetic drive components arranged along the axial direction of the mandrel; The magnetic drive assembly includes a gear outer ring, a stop inner ring, a fixed inner ring, and a bearing. The stop inner ring includes a horizontal surrounding part and a vertical stop part. The fixed inner ring is provided with an annular cavity. An aluminum ring, several magnets, a magnet fixing ring, and a magnet adsorption ring are arranged sequentially in the annular cavity. The magnet fixing ring is provided with several hollow parts, which are arranged corresponding to the magnets. The height of the magnets is higher than the hollow parts, and the magnets protrude from the magnet fixing ring. The surface of the aluminum ring is smooth, the gap between the aluminum ring and the magnet is 0.5mm-3mm, and the parallelism between the aluminum ring and the magnet is 0.

02. The aluminum ring is bonded to the vertical stop by high-temperature adhesive, and the magnet fixing ring and the magnet adsorption ring are fixed to the fixing inner ring.

2. The slip shaft of the diaphragm slitting machine as described in claim 1, characterized in that, The magnets are distributed circumferentially along the magnet fixing ring, and the magnets are arranged alternately by N-pole magnets and S-pole magnets.

3. The slip shaft of the diaphragm slitting machine as described in claim 2, characterized in that, The number of hollowed-out sections is four and they are evenly distributed along the magnet fixing ring, and screw fixing holes are provided between adjacent hollowed-out sections.

4. The slip shaft of the diaphragm slitting machine as described in any one of claims 1-3, characterized in that, The magnet retaining ring is made of stainless steel.

5. The slip shaft of the diaphragm slitting machine as described in any one of claims 1-3, characterized in that, The magnet adsorption ring is made of 45 steel.

6. The slip shaft of the diaphragm slitting machine as described in any one of claims 1-3, characterized in that, The surface of the aluminum ring is smooth, and the surface roughness of the aluminum ring is less than 1 micrometer.

7. The slip shaft of the diaphragm slitting machine as described in any one of claims 1-3, characterized in that, The outer ring of the gear drives the diaphragm winding assembly.

8. The slip shaft of the diaphragm slitting machine as described in claim 7, characterized in that, The diaphragm winding assembly includes a sliding base, a transmission gear, a swing arm, and a winding wheel. The swing arm is hinged to the sliding base, and the winding wheel is rotatably disposed at the top end of the swing arm. The transmission gear meshes with the outer ring of the gear, and the transmission gear drives the winding wheel through a belt. The swing arm is provided with a protrusion, which is driven by a cylinder to realize the swing arm swinging, and the cylinder uses the sliding base as a fulcrum.

9. A small-width battery separator slitting machine, characterized in that, Includes the slip shaft of the diaphragm slitting machine as described in any one of claims 1-8.

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