Slitting equipment

Abstract

The utility model relates to slitting equipment, and belongs to the technical field of battery manufacturing. The utility model provides slitting equipment which comprises a slitting unit comprising a first motor, a driving roller, a slitting mechanism and a first transmission wheel; the winding unit comprises a contact roller, a winding roller, a second motor, a speed reducer and a second transmission wheel, the speed reducer comprises an input shaft, an output shaft and a base, the second transmission wheel is installed on the base, the second motor is used for driving the input shaft to rotate, and the output shaft is in transmission connection with the contact roller; wherein the first motor is in transmission connection with the first transmission wheel and the second transmission wheel through transmission parts, and the second motor is configured to output the rotating speed based on the preset speed difference ratio and the rotating speed of the second transmission wheel. According to the slitting equipment, the tension fluctuation amplitude of the material belt in the conveying process can be reduced, the belt conveying stability of the material belt is improved, and the possibility of quality defects caused by the too large tension fluctuation amplitude of the material belt is reduced.

Description

Technical Field

[0001] The present application relates to the field of battery manufacturing technology, and in particular to a slitting device. Background Art

[0002] During the manufacturing process of batteries, the slitting process is required to cut the diaphragm into rolls of target width to feed the next battery cell assembly process. In the slitting process, the membrane surface tension of the diaphragm during transportation greatly affects the width fluctuation range and winding quality of the diaphragm. Therefore, how to reduce the tension fluctuation range of the diaphragm in the slitting process has become an important issue to improve the quality of the slitting and winding coil diaphragm. Utility Model Content

[0003] To this end, the present application proposes a slitting device that can reduce the tension fluctuation amplitude of the material belt during the conveying process, improve the running stability of the material belt, and reduce the possibility of quality defects of the material belt due to excessive tension fluctuation amplitude.

[0004] The slitting equipment of some embodiments of the present application includes: a slitting unit, including a first motor, a driving roller, a slitting mechanism and a first transmission wheel, the first transmission wheel is installed at the end of the driving roller; a winding unit, including a contact roller, a winding roller, a second motor, a reducer and a second transmission wheel, the reducer includes an input shaft, an output shaft and a base, the second transmission wheel is installed on the base, the second motor is used to drive the input shaft to rotate, the output shaft is connected to the contact roller and rotates synchronously; wherein the winding roller is located downstream of the contact roller, the material strip passes through the slitting mechanism, the driving roller and the contact roller in sequence and enters the winding roller for winding, the driving roller and the contact roller are arranged opposite to each other, the first motor is connected to the first transmission wheel and the second transmission wheel through a transmission member, and the second motor is configured to output a rotation speed based on a preset speed difference ratio between the driving roller and the contact roller and a rotation speed of the second transmission wheel.

[0005] According to some embodiments of the present application, a first output wheel is provided at the output end of the first motor, and the first transmission wheel is connected to the first output wheel through a first synchronous belt transmission.

[0006] According to some embodiments of the present application, the slitting unit also includes: a flattening roller, located upstream of the slitting mechanism, and used to flatten the material strip; the slitting mechanism includes a spacer sleeve and a cutter, and the cutter is arranged opposite to the spacer sleeve; wherein the first transmission wheel, the pulley of the spacer sleeve and the pulley of the flattening roller are all connected by the first synchronous belt transmission to achieve synchronous rotation.

[0007] According to some embodiments of the present application, the second transmission wheel is connected to the first transmission wheel via a second synchronous belt transmission.

[0008] According to some embodiments of the present application, a second output wheel is provided at the end of the second motor, and the input shaft is connected to the second output wheel through a third synchronous belt transmission.

[0009] According to some embodiments of the present application, the second transmission wheel is sleeved on the base.

[0010] According to some embodiments of the present application, two winding units are provided, and the second transmission wheels and the first transmission wheels of the two winding units share the same transmission member to achieve synchronous rotation.

[0011] According to some embodiments of the present application, the driving roller rotates clockwise, the contact roller rotates counterclockwise, and the winding roller rotates clockwise to perform clockwise winding, or

[0012] The driving roller rotates counterclockwise, the contact roller rotates clockwise, and the winding roller rotates counterclockwise to perform counterclockwise winding.

[0013] According to some embodiments of the present application, the slitting unit further includes: an unwinding mechanism for unwinding the material tape; a tension detection mechanism for detecting the tension of the material tape; and a deviation correction mechanism for correcting the deviation of the material tape.

[0014] According to some embodiments of the present application, the slitting unit further includes: a control device configured to adjust the output speed of the second motor based on a preset speed difference ratio between the driving roller and the contact roller and the output speed of the second transmission wheel.

[0015] Compared with the prior art, this solution has the following beneficial effects:

[0016] The first transmission wheel and the second transmission wheel are connected through a transmission member. The first motor not only drives the material belt to pass through the slitting mechanism to form a sub-material belt, but also drives the contact roller to rotate to guide the sub-material belt into the winding roller to complete the winding. The second motor is connected to the contact roller through a reducer to adjust the speed of the contact roller in real time so that the driving roller and the contact roller maintain a certain speed difference ratio. Since the number of driving motors is reduced, the undesirable phenomenon of excessive speed difference between rollers caused by the superposition of speed fluctuations of multiple motors can be reduced. Since the reducer is set, the speed adjustment accuracy of the second motor can be improved, so that the tension fluctuation amplitude of the material belt can be reduced during the slitting to form sub-material belts and winding process, thereby reducing the possibility of wrinkling or tearing of the material belt due to uneven tension and improving the quality of slitting and winding of the material belt.

[0017] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram of a clockwise winding material belt of a slitting device provided in an embodiment of the present application;

[0020] Figure 2 A transmission schematic diagram of a slitting device provided in an embodiment of the present application;

[0021] Figure 3 A schematic diagram of the structure of the slitting equipment reducer provided in the embodiment of the present application;

[0022] Figure 4 A schematic diagram of a counterclockwise winding material belt of a slitting device provided in an embodiment of the present application;

[0023] Figure 5 This is a schematic diagram of the overall tape transport of the slitting equipment provided in an embodiment of the present application.

[0024] Icons: 100-slitting equipment; 110-slitting unit; 111-first motor; 112-driving roller; 113-slitting mechanism; 1131-spacer; 1132-cutter; 115-first transmission wheel; 116-flattening roller; 117-first synchronous belt; 118-unwinding mechanism; 1191-tension detection mechanism; 1192-correction mechanism; 120-winding unit; 121-contact roller; 122-winding roller; 123-second motor; 124-reducer; 1241-input shaft; 1242-output shaft; 1243-base; 1244-bearing seat; 126-second transmission wheel; 127-second synchronous belt; 128-third synchronous belt; 200-material belt; 210-sub-material belt. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0027] In the related art, the diaphragm and other material strips enter the slitting mechanism and are slit to form two sub-material strips. The two sub-material strips are introduced into two different winding paths, and the winding roller is pressed on the contact roller to realize the winding of the material strip. The entire system includes a slitting unit and a winding unit. The slitting unit and the winding unit are respectively equipped with independent motors to drive the material strip to move and drive the sub-material strip to wind. Since the servo motor itself has a certain speed fluctuation amplitude, the two motors may have superposition of peaks and troughs during the transmission coordination process, further aggravating the fluctuation amplitude of the material strip, resulting in unstable tension of the material strip during the conveying process, and then causing quality problems.

[0028] The inventors have found through research that if the phenomenon of superposition of fluctuations in the transmission coordination of the above-mentioned two motors can be reduced, the tension fluctuation amplitude of the material strip during the slitting and winding process can be reduced, thereby improving the quality of the wound material strip.

[0029] Based on the above ideas, the present application proposes a new slitting device with higher material strip winding quality.

[0030] like Figure 1 , Figure 2 and Figure 3 As shown, the slitting device 100 of the embodiment of the present application includes a slitting unit 110 and a winding unit 120. The slitting unit 110 includes a first motor 111, a driving roller 112, a slitting mechanism 113 and a first transmission wheel 115, and the first transmission wheel 115 is installed at the end of the driving roller 112; the winding unit 120 includes a contact roller 121, a winding roller 122, a second motor 123, a reducer 124 and a second transmission wheel 126, the reducer 124 includes an input shaft 1241, an output shaft 1242 and a base 1243, the second motor 123 is used to drive the input shaft 1241 to rotate, and the output shaft 1242 is transmission-connected to the contact roller 121 and rotates synchronously. Among them, the winding roller 122 is located downstream of the contact roller 121, and the material strip 200 passes through the slitting mechanism 113, the driving roller 112 and the contact roller 121 in sequence and then enters the winding roller 122 for winding. The driving roller 112 and the contact roller 121 are arranged opposite to each other, and the first motor 111 is connected to the first transmission wheel 115 and the second transmission wheel 126 through a transmission member. The second motor 123 is configured to output a rotation speed based on a preset speed difference ratio between the driving roller 112 and the contact roller 121 and the rotation speed of the second transmission wheel 126.

[0031] In some embodiments of the present application, the material strip 200 refers to the diaphragm, an important component of the lithium battery, which is cut into two sub-material strips 210 at one time; in other embodiments, the material strip 200 may also refer to other types of material strips that need to be cut.

[0032] The output end of the first motor 111, the first transmission wheel 115 and the second transmission wheel 126 can share the same transmission member to achieve transmission connection; or the output end of the first motor 111 and the first transmission wheel 115 can achieve transmission connection through a transmission member, and the first transmission wheel 115 and the second transmission wheel 126 can achieve transmission connection through another transmission member; the first transmission wheel 115 can also be a double-layer gear, the output end of the first motor 111 is connected to a gear ring of the first transmission wheel 115 through a transmission member, and the second transmission wheel 126 is connected to the other gear ring of the first transmission wheel 115 through another transmission member.

[0033] The first transmission wheel 115 and the second transmission wheel 126 are connected by a transmission member. The first motor 111 not only drives the material belt 200 to pass through the slitting mechanism 113 to form a sub-material belt 210, but also drives the contact roller 121 to rotate, so as to guide the sub-material belt 210 into the winding roller 122 to complete the winding. Since the number of driving motors is reduced, the undesirable phenomenon of excessive speed difference between rollers caused by the superposition of multiple motor speed fluctuations can be reduced. Since the second motor 123 is connected to the contact roller 121 through the reducer 124, the accuracy and stability of speed difference adjustment can be improved. Using the slitting device 100 of the embodiment of the present application to slitting and winding the material belt 200 can reduce the fluctuation amplitude of the material belt tension during the slitting and winding of the material belt 200, thereby reducing the possibility of wrinkling or tearing of the material belt 200 due to uneven tension, and improving the quality of the material belt slitting and winding.

[0034] It can be understood that the slitting equipment 100 of the embodiment of the present application includes multiple roller assemblies, and the roller assembly includes a roller body and a pulley at the end. The roller body is used to support the material belt 200, and the pulley is used to cooperate with the transmission member. The driving member drives the roller body to rotate through the pulley, which will not be further elaborated here.

[0035] The function of the transmission member is to drive the first transmission wheel 115 and the second transmission wheel 126 to rotate synchronously. The contact roller 121 is located downstream of the driving roller 112. In order to adjust the tension of the material belt 200 and meet the production requirements of different working conditions, it is necessary to set a second motor 123, which is used to adjust the speed of the contact roller 121; that is, the first motor 111 is used as a power source for the rotation of the driving roller 112 and the contact roller 121, and the second motor 123 plays a role in adjusting the speed of the contact roller 121, so as to achieve a fixed speed difference ratio between the driving roller 112 and the contact roller 121. It is understandable that for engineering and technical personnel, it is hoped that the speed difference ratio between the driving roller 112 and the contact roller 121 is maintained at a fixed value, that is, it is hoped that the material belt 200 maintains a constant tension. In order to maintain the preset speed difference ratio, it is necessary to set a second motor 123 to adjust the speed of the contact roller 121.

[0036] The second motor 123 adjusts the rotation speed of the contact roller 121. The contact roller 121 drives the material belt 200 to move forward through the friction between the roller surface and the material belt 200, so that the material belt 200 enters the winding roller 122 for winding. As a preferred embodiment, the linear speed of the contact roller 121 is greater than the running speed of the material belt 200 itself, and the material belt 200 is driven to move forward through the sliding friction.

[0037] like Figure 3 As shown, in some embodiments of the present application, the winding unit 120 also includes a reducer 124, including an input shaft 1241 and an output shaft 1242, the second motor 123 is used to drive the input shaft 1241 to rotate, and the output shaft 1242 is transmission-connected to the contact roller 121 and rotates synchronously.

[0038] In some embodiments of the present application, the reducer 124 further includes a base 1243 , and the second transmission wheel 126 is fixedly sleeved on the base 1243 .

[0039] Specifically, the second transmission wheel 126 is fixedly sleeved on the outer ring of the base 1243, and the second transmission wheel 126 drives the base 1243 to rotate synchronously. The second motor 123 is connected to the contact roller 121 through the reducer 124, and the second motor 123 is fixedly installed on the external frame and connected to the input shaft 1241 of the reducer 124.

[0040] With this form, the speed reducer 124 can be easily and reliably mounted on the contact roller 121 .

[0041] In other embodiments, the second transmission wheel 126 may also be transmission-connected to the base 1243 via a transmission gear ring or the like.

[0042] By providing the reducer 124 , the influence of the speed fluctuation of the second motor 123 on the speed of the contact roller 121 can be reduced, thereby reducing the tension change of the material belt 200 caused by the speed fluctuation of the second motor 123 itself.

[0043] like Figure 2 As shown, in some embodiments of the present application, a first transmission wheel 115 is provided at the end of the driving roller 112 , a second transmission wheel 126 is provided at the end of the contact roller 121 , and the second transmission wheel 126 is connected to the first transmission wheel 115 via a second synchronous belt 127 .

[0044] The transmission member may be a synchronous belt or a plurality of meshingly connected gear assemblies.

[0045] With this arrangement, the outer peripheral surfaces of the roller bodies of the contact roller 121 and the driving roller 112 can be avoided so as to have a sufficient width range for conveying the material belt 200 .

[0046] In other embodiments, the contact roller 121 and the driving roller 112 may also be connected in transmission in other forms.

[0047] In some embodiments of the present application, a first transmission wheel 115 is provided at the end of the driving roller 112, a first output wheel (not shown) is provided at the output end of the first motor 111, and a second transmission wheel 126 is provided at the end of the contact roller 121. A second output wheel is provided at the end of the second motor 123, and the input shaft 1241 is connected to the second output wheel through a third synchronous belt 128.

[0048] The first output wheel of the first motor 111 is connected to the first transmission wheel 115 via a first synchronous belt 117 , and the first transmission wheel 115 is connected to the second transmission wheel 126 via a second synchronous belt 127 .

[0049] In this form, the first motor 111 can be used to simply and reliably provide power to the entire system. Since the number of motors is reduced, the undesirable phenomenon of excessive fluctuation in the tension of the material strip due to the superposition of fluctuations in the speeds of multiple motors can be reduced.

[0050] like Figure 2 and Figure 3 As shown, a second output wheel is provided at the output end of the second motor 123, the first output wheel of the first motor 111 is connected to the first transmission wheel 115 via a first synchronous belt 117, the first transmission wheel 115 is connected to the second transmission wheel 126 via a second synchronous belt 127, the input shaft 1241 is connected to the second output wheel of the second motor 123 via a third synchronous belt 128, and the output shaft 1242 is connected to the contact roller 121.

[0051] By providing the reducer 124 , the adjustment range of the roller speed can be narrowed, the adjustment accuracy of the roller speed can be increased, and after the action of the reducer 124 , the speed fluctuation value of the second motor 123 is significantly reduced.

[0052] like Figure 2 and Figure 3 As shown, in some embodiments of the present application, the slitting unit 110 also includes a flattening roller 116, which is located upstream of the slitting mechanism 113 and is used to flatten the material strip 200; the slitting mechanism 113 includes a spacer sleeve 1131 and a cutter 1132, and the cutter 1132 is arranged opposite to the spacer sleeve 1131; the first transmission wheel 115, the pulley of the spacer sleeve 1131 and the pulley of the flattening roller 116 are all connected by a first synchronous belt 117 to achieve synchronous rotation.

[0053] The material strip 200 is flattened by the flattening roller 116 and enters the slitting mechanism 113. The spacer 1131 has a cutting groove or a knife body. The cutter 1132 is an upper cutter. The cutter 1132 and the cutting groove or the knife body form a shearing effect to cut the material strip 200 into two sub-material strips 210. The sub-material strip 210 enters the corresponding winding unit 120, and the sub-material strip 210 is pressed on the contact roller 121 and enters the winding roller 122 for winding.

[0054] In some embodiments of the present application, two winding units 120 are provided, and the second transmission wheels 126 of the two winding units 120 share the same transmission member with the first transmission wheel 115 to achieve synchronous rotation.

[0055] Specifically, each contact roller 121 receives a sub-material belt 210 respectively, and the two contact rollers 121 are located on both sides of the driving roller 112 and are connected by a second synchronous belt 127 .

[0056] In other embodiments, the winding units 120 are arranged in a one-to-one correspondence with the sub-material strips according to the number of sub-material strips formed by slitting.

[0057] like Figure 1 As described, in some embodiments of the present application, the winding unit 120 performs clockwise winding, the driving roller 112 rotates clockwise, the contact roller 121 rotates counterclockwise, and the winding roller 122 rotates clockwise to perform clockwise winding.

[0058] like Figure 5 As shown, in some other embodiments of the present application, the winding unit 120 performs counterclockwise winding, the driving roller 112 rotates counterclockwise, the contact roller 121 rotates clockwise, and the winding roller 122 rotates counterclockwise to perform counterclockwise winding.

[0059] like Figure 5As shown, in some embodiments of the present application, the slitting unit 110 also includes an unwinding mechanism 118, a tension detection mechanism 1191 and a correction mechanism 1192, the unwinding mechanism 118 is used to unwind the material strip 200, the tension detection mechanism 1191 is used to detect the tension of the material strip 200, and the correction mechanism 1192 is used to correct the material strip 200.

[0060] The material strip 200 unwound by the unwinding mechanism 118 passes through the correction mechanism 1192, the tension detection mechanism 1191, the roller body of the flattening roller 116, and the slitting mechanism 113 in sequence to form two sub-material strips 210. The two sub-material strips 210 pass through the driving roller 112 and enter the roller bodies of the corresponding contact rollers 121 respectively, and are wound up by the roller bodies of the corresponding winding rollers 122.

[0061] It is understandable that during the conveying process of the material belt 200 or the sub-material belt 210, multiple rollers for reversing and tensioning are bypassed to ensure that the material belt 200 or the sub-material belt 210 is conveyed along a preset path.

[0062] In some embodiments of the present application, the slitting device 100 further includes a control device configured to adjust the output speed of the second motor 123 according to the speed difference ratio between the driving roller 112 and the contact roller 121 and the output speed of the second transmission wheel 126 .

[0063] The control device is electrically connected to the first motor 111 and the second motor 123. The control device controls the output speed of the first motor 111 according to the preset linear speed of the driving roller 112 and the preset speed difference ratio. In order to maintain the speed difference between the driving roller 112 and the contact roller 121 at a fixed value, the output speed of the second motor 123 is adjusted.

[0064] The transmission process of the slitting device 100 of the embodiment of the present application is as follows:

[0065] The first output wheel of the first motor 111 is connected to the pulley of the flattening roller 116, the pulley of the spacer 1131, the first transmission wheel 115 of the driving roller 112 and the pulleys of the plurality of rollers through the first synchronous belt 117, so as to drive the flattening roller 116, the spacer 1131 and the driving roller 112 to rotate synchronously;

[0066] The first transmission wheel 115 is connected to the second transmission wheel 126 through a second synchronous belt 127. Meanwhile, the second output wheel of the second motor 123 is connected to the input shaft 1241 of the corresponding reducer 124 through a third synchronous belt 128. The output shaft 1242 of the reducer 124 is connected to the corresponding driving roller 112. The second motor 123 is used to adjust the rotation speed of the driving roller 112 with high precision, so that the speed difference △ between the contact roller 121 and the driving roller 112 is maintained at a fixed value.

[0067] The first motor 111 rotates to drive the first transmission wheel 115 and the second transmission wheel 126 to rotate synchronously. The second motor 123 drives the contact roller 121 to rotate through the reducer 124, so that the speed difference between the contact roller 121 and the driving roller 112 is maintained at a fixed value.

[0068] The speed of the second motor 123 is calculated as follows:

[0069] The rotation speed of the contact roller 121 is equal to the rotation speed w of the output shaft 1242 输出 , the reduction ratio of the reducer 124 is i, and the speed of the second transmission wheel 126 is w 主线 is the reference speed.

[0070] w 输出 The calculation formula is:

[0071]

[0072] For example, when w 输入 =w 主线 When 输出 =w 主线 , the rotation speed of the driving roller 112 is the same as the rotation speed of the contact roller 121, w 输入 The fluctuation of is also significantly reduced due to the influence of the reduction ratio i parameter; 输入 Subtract w 主线 Then divide by i, w 输入 The fluctuation value of w 输出 The impact has been effectively reduced.

[0073] The speed difference ratio between the driving roller 112 and the contact roller 121 is:

[0074] Δ=(w 输出 -w 主线 ) / w 主线

[0075] Through the above two formulas, we can get:

[0076] w 输入 =w 主线 ×(1+i×△)

[0077] The control device automatically adjusts the rotation speed of the second motor 123 according to the instruction, thereby adjusting △ so that △ meets the preset range, and adjusting the tension of the material strip in real time so that the tension of the material strip meets the process requirements.

[0078] It can be understood that △ is a parameter input based on empirical values, and there is a relationship between the material strip tension and △. For example, the △ value is input based on a pre-prepared chart reflecting the relationship between the material strip tension and the △ value.

[0079] When the sub-material strip 210 is wound and slit using the slitting equipment 100 of the embodiment of the present application, the speed difference between adjacent rollers has a small fluctuation amplitude, and the tension fluctuation amplitude of the material strip 200 and the sub-material strip 210 during the conveying process is also small, thereby reducing undesirable phenomena such as wrinkling and tearing caused by excessive tension changes and improving the winding quality of the material strip.

[0080] It should be noted that, in the absence of conflict, the features in the embodiments of this application may be combined with each other.

[0081] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A slitting device (100), characterized in that: include: A slitting unit (110) comprising a first motor (111), a driving roller (112), a slitting mechanism (113) and a first transmission wheel (115), wherein the first transmission wheel (115) is mounted on an end of the driving roller (112); A winding unit (120), comprising a contact roller (121), a winding roller (122), a second motor (123), a reducer (124) and a second transmission wheel (126); the reducer (124) comprises an input shaft (1241), an output shaft (1242) and a base (1243); the second transmission wheel (126) is mounted on the base (1243); the second motor (123) is used to drive the input shaft (1241) to rotate; the output shaft (1242) is transmission-connected to the contact roller (121) and rotates synchronously; The winding roller (122) is located downstream of the contact roller (121), and the material strip passes through the slitting mechanism (113), the driving roller (112) and the contact roller (121) in sequence before entering the winding roller (122) for winding. The driving roller (112) and the contact roller (121) are arranged opposite to each other, and the first motor (111) is connected to the first transmission wheel (115) and the second transmission wheel (126) through a transmission member. The second motor (123) is configured to output a rotation speed based on a preset speed difference ratio between the driving roller (112) and the contact roller (121) and the rotation speed of the second transmission wheel (126).

2. The slitting device (100) according to claim 1, characterized in that: The output end of the first motor (111) is provided with a first output wheel, and the first transmission wheel (115) is transmission-connected to the first output wheel via a first synchronous belt (117).

3. The slitting device (100) according to claim 2, characterized in that: The cutting unit (110) further comprises: A flattening roller (116), located upstream of the slitting mechanism (113), for flattening the material strip; The slitting mechanism (113) comprises a spacer sleeve (1131) and a cutter (1132), wherein the cutter (1132) is arranged opposite to the spacer sleeve (1131); The first transmission wheel (115), the pulley of the spacer sleeve (1131) and the pulley of the flattening roller (116) are all connected by the first synchronous belt (117) to achieve synchronous rotation.

4. The slitting device (100) according to claim 1, characterized in that: The second transmission wheel (126) is transmission-connected to the first transmission wheel (115) via a second synchronous belt (127).

5. The slitting device (100) according to claim 1, characterized in that: A second output wheel is provided at the end of the second motor (123), and the input shaft (1241) is transmission-connected to the second output wheel via a third synchronous belt (128).

6. The slitting device (100) according to claim 1, characterized in that: The second transmission wheel (126) is sleeved on the base (1243).

7. The slitting device (100) according to claim 1, characterized in that: Two winding units (120) are provided, and the second transmission wheels (126) of the two winding units (120) and the first transmission wheel (115) share the same transmission member to achieve synchronous rotation.

8. The slitting device (100) according to claim 1, characterized in that: The driving roller (112) rotates clockwise, the contact roller (121) rotates counterclockwise, and the winding roller (122) rotates clockwise, so as to perform clockwise winding, or The driving roller (112) rotates counterclockwise, the contact roller (121) rotates clockwise, and the winding roller (122) rotates counterclockwise, so as to perform counterclockwise winding.

9. The slitting device (100) according to claim 1, characterized in that: The cutting unit (110) further comprises: An unwinding mechanism (118) for unwinding a material strip; A tension detection mechanism (1191), used for detecting the tension of the material strip; The deflection correction mechanism (1192) is used for correcting the deflection of the material belt.

10. The slitting device (100) according to claim 1, characterized in that: Also includes: The control device is configured to adjust the output speed of the second motor (123) based on a preset speed difference ratio between the driving roller (112) and the contact roller (121) and the output speed of the second transmission wheel (126).

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