Belt wheel transmission device and slitting and winding equipment

Abstract

The utility model relates to a belt wheel transmission device and slitting and winding equipment, and belongs to the technical field of battery manufacturing. The belt wheel transmission device comprises a slitting transmission unit which comprises an output wheel; the first transmission wheel assembly comprises a first driving wheel and a first driven wheel; the second transmission wheel assembly comprises a second driving wheel and a second driven wheel; the driving assembly is used for driving the first driving wheel and the second driving wheel to rotate in the same direction; the first driven wheel, the second driven wheel and the output wheel are in transmission connection through an output transmission belt, the first driven wheel and the output wheel can rotate reversely, and the second driven wheel and the output wheel can rotate in the same direction; and the winding transmission unit comprises a contact belt wheel, and the contact belt wheel and the output wheel are in transmission connection through a winding transmission belt. According to the belt wheel transmission device, reversing winding can be achieved, and the good material belt conveying quality is achieved. The utility model further provides slitting and winding equipment, and the belt wheel transmission device is applied to the slitting and winding equipment.

Description

Technical Field

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

[0002] During the manufacturing process of batteries, the slitting process is required to slit the diaphragm or electrode strips into rolls of target width, and then reel them up through the reeling process to feed the next battery cell assembly process. For slitting equipment, it is very important to be able to change the direction of the coated film surface of the strip. For example, the film surface on one side of the upper slitting knife can be reeled to the inside of the reel core by reeling clockwise, or the film surface on one side of the upper slitting knife can be reeled to the outside of the reel core by reeling counterclockwise, etc. This requires the slitting equipment to achieve forward and reverse reeling through program control and changes in the film path without changing the hardware structure.

[0003] At present, the slitting equipment is equipped with independent motors for the slitting process and the winding process. Multiple motors are used to change the direction of the entire transmission system, change the direction of each roller, and then change the direction of the tape. However, due to the fluctuation range of the motor speed, the superposition of multiple motors may further increase the speed difference of the rollers, reducing the conveying quality of the tape. How to reduce the tension fluctuation range of the tape on the basis of realizing the reversing function has become an important issue to improve the quality of the slitting and winding coils. Utility Model Content

[0004] To this end, the present application proposes a pulley transmission device and a slitting and winding device, which can realize reversing winding and have good material conveying quality.

[0005] The pulley transmission device of some embodiments of the present application includes: a slitting transmission unit, including: an output wheel, used to drive the power roller to rotate; a first transmission wheel assembly, including a first driving wheel and a first driven wheel, the first driving wheel and the first driven wheel are detachably connected; a second transmission wheel assembly, including a second driving wheel and a second driven wheel, the second driving wheel and the second driven wheel are detachably connected; a driving assembly, used to drive the first driving wheel and the second driving wheel to rotate in the same direction; the first driven wheel, the second driven wheel and the output wheel are connected by an output transmission belt, the first driven wheel can rotate in the opposite direction of the output wheel, and the second driven wheel can rotate in the same direction as the output wheel; a winding transmission unit, including: a contact pulley, used to drive the contact roller to rotate, the contact pulley and the output wheel are connected by a winding transmission belt.

[0006] According to some embodiments of the present application, the first driving wheel and the first driven wheel are connected by an electromagnetic clutch, and the second driving wheel and the second driven wheel are connected by an electromagnetic clutch; when the first transmission wheel assembly is in a powered-on state and the second transmission wheel assembly is in a powered-off state, the first driving wheel drives the first driven wheel to rotate in a first direction, the first driven wheel drives the output wheel to rotate in a direction opposite to the first direction through the output transmission belt, and the output wheel drives the contact pulley to rotate synchronously through the winding transmission belt; when the first transmission wheel assembly is in a powered-off state and the second transmission wheel assembly is in a powered-on state, the second driving wheel drives the second driven wheel to rotate in the first direction, the second driven wheel drives the output wheel to rotate in the first direction through the output transmission belt, and the output wheel drives the contact pulley to rotate synchronously through the winding transmission belt.

[0007] According to some embodiments of the present application, the drive assembly includes: a first motor; a first synchronous wheel and a second synchronous wheel; the output shaft of the first motor is transmission-connected to the first synchronous wheel, the first synchronous wheel and the second synchronous wheel are transmission-connected via a first transmission belt, and the second synchronous wheel, the first driving wheel and the second driving wheel are connected via a second transmission belt.

[0008] According to some embodiments of the present application, the second synchronous wheel includes an inner pulley and an outer pulley that are coaxially connected, the inner pulley is connected to the first transmission belt, and the outer pulley is connected to the second transmission belt.

[0009] According to some embodiments of the present application, the slitting transmission unit further includes: a flattening transmission wheel for driving the flattening roller to rotate; and a spacer sleeve transmission wheel for driving the spacer sleeve to rotate; wherein the flattening transmission wheel and the spacer sleeve transmission wheel are both connected to the first transmission belt.

[0010] According to some embodiments of the present application, the contact pulley includes a reducer and a third synchronous wheel, the reducer includes an input shaft, an output shaft and a base, the third synchronous wheel is installed on the base, the third synchronous wheel is connected to the output wheel through a winding transmission belt, and the winding transmission unit also includes: a second motor for driving the input shaft to rotate, and the output shaft is used to be connected to the contact roller; wherein the second motor is configured to adjust the speed based on a preset speed difference ratio between the power roller and the contact roller and the speed of the third synchronous wheel.

[0011] According to some embodiments of the present application, the third synchronization wheel is sleeved on the base.

[0012] According to some embodiments of the present application, the output shaft of the second motor is provided with a differential output wheel, and the differential output wheel is connected to the input shaft through a third transmission belt.

[0013] According to some embodiments of the present application, there are two winding transmission units, and the contact pulleys and the output pulley of the two winding transmission units are used together by the winding transmission belt to achieve synchronous rotation.

[0014] The slitting and winding equipment of some embodiments of the present application uses the slitting and winding equipment of the above-mentioned pulley transmission device, including: a slitting mechanism for slitting the material strip; a power roller, which is transmission-connected to the output wheel; a contact roller, which is transmission-connected to the contact pulley; and a winding roller; wherein the power roller and the contact roller are arranged opposite to each other, and the material strip is slit to form two divided material strips after passing through the slitting mechanism, and the divided material strips pass through the power roller and the contact roller in sequence and then enter the winding roller for winding.

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

[0016] In the pulley transmission device of the embodiment of the present application, the first driving wheel and the second driving wheel rotate in the same direction, the first driven wheel and the output wheel rotate in the opposite direction, and the second driven wheel and the output wheel rotate in the same direction. One of the first driven wheel and the second driven wheel is controlled as a power wheel and the other as a driven wheel by means of mechanical clutch or electromagnetic clutch. When the first driven wheel is used as a power wheel, the first driven wheel drives the output wheel to rotate in the opposite direction relative to the first driving wheel; when the second driven wheel is used as a power wheel, the second driven wheel drives the output wheel to rotate in the same direction relative to the second driving wheel; the output wheel changes direction, thereby driving the contact pulley to change direction, thereby realizing reversing winding. Since the first driving wheel and the second driving wheel are both driven by the same drive assembly, the undesirable phenomenon of uneven tension of the material belt caused by the difference in synchronous control of multiple motors is overcome, the structure of the entire transmission system is simplified, and the conveying quality of the material belt is improved.

[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 1A transmission schematic diagram of a pulley transmission device provided in an embodiment of the present application (the output wheel rotates in the opposite direction of the first direction);

[0020] Figure 2 A transmission schematic diagram related to a first transmission wheel assembly and a second transmission wheel assembly of a pulley transmission device provided in an embodiment of the present application;

[0021] Figure 3 A schematic diagram of a structure related to differential speed regulation of a pulley transmission device provided in an embodiment of the present application;

[0022] Figure 4 A transmission schematic diagram of a pulley transmission device provided in an embodiment of the present application (the output pulley rotates in a first direction);

[0023] Figure 5 A schematic diagram of the tape feeding of the slitting and winding device provided in an embodiment of the present application (winding in the opposite direction of the first direction);

[0024] Figure 6 Schematic diagram of the tape feeding of the slitting and winding device provided in the embodiment of the present application (winding along the first direction P):

[0025] Figure 7 This is an overall schematic diagram of the slitting and winding equipment provided in an embodiment of the present application.

[0026] Icons: 100-pulley transmission device; 110-slitting transmission unit; 111-driving assembly; 1111-first motor; 1112-first synchronous wheel; 1113-second synchronous wheel; 1114-inner pulley; 1115-outer pulley; 112-first transmission wheel assembly; 1121-first driving wheel; 1122-first driven wheel; 113-second transmission wheel assembly; 1131-second driving wheel; 1132-second driven wheel; 114-output wheel; 115-flattening transmission wheel; 116-spacer transmission wheel; 120-winding transmission unit; 121-contact pulley; 121 1-reducer; 1212-third synchronous wheel; 1213-input shaft; 1214-output shaft; 1215-base; 1216-bearing seat; 122-second motor; 131-output transmission belt; 132-first transmission belt; 133-second transmission belt; 134-winding transmission belt; 135-third transmission belt; 200-slitting and winding equipment; 210-slitting mechanism; 211-spacer; 212-cutter; 220-power roller; 230-contact roller; 240-winding roller; 250-flattening roller; 260-unwinding mechanism; 270-tension detection mechanism; 280-correction mechanism. DETAILED DESCRIPTION

[0027] 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.

[0028] 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.

[0029] like Figure 1 and Figure 2 As shown, the pulley transmission device 100 of some embodiments of the present application includes a slitting transmission unit 110 and a winding transmission unit 120 . The slitting transmission unit 110 includes a driving assembly 111, a first transmission wheel assembly 112, a second transmission wheel assembly 113 and an output wheel 114, wherein the output wheel 114 is used to drive the power roller 220 to rotate, the first transmission wheel assembly 112 includes a first driving wheel 1121 and a first driven wheel 1122, the first driving wheel 1121 and the first driven wheel 1122 are detachably connected, the second transmission wheel assembly 113 includes a second driving wheel 1131 and a second driven wheel 1132, the second driving wheel 1131 and the second driven wheel 1132 are detachably connected, and the driving assembly 111 is used to drive the first driving wheel 1121 and the second driving wheel 1131 to rotate in the same direction; the first driven wheel 1122, the second driven wheel 1132 and the output wheel 114 are connected through the output transmission belt 131, the first driven wheel 1122 can rotate in the opposite direction of the output wheel 114, and the second driven wheel 1132 can rotate in the same direction as the output wheel 114. The winding transmission unit 120 includes a contact pulley 121 for driving the contact roller 230 to rotate. The contact pulley 121 and the output wheel 114 are connected to each other through a winding transmission belt 134 .

[0030] When the first driving wheel 1121 and the first driven wheel 1122 are in an engaged state and the second driving wheel 1131 and the second driven wheel 1132 are in a separated state, the first driving wheel 1121 drives the first driven wheel 1122 to rotate, the first driven wheel 1122 drives the output wheel 114 to rotate in the opposite direction through the output transmission belt 131, and the output wheel 114 drives the contact pulley 121 to rotate synchronously through the winding transmission belt 134; when the first driving wheel 1121 and the first driven wheel 1122 are in a separated state and the second driving wheel 1131 and the second driven wheel 1132 are in an engaged state, the second driving wheel 1131 drives the second driven wheel 1132 to rotate, the second driven wheel 1132 drives the output wheel 114 to rotate in the same direction through the output transmission belt 131, and the output wheel 114 drives the contact pulley 121 to rotate synchronously through the winding transmission belt 134.

[0031] The output wheel 114 is the final pulley for outputting power and is mounted on the power roller 220 (see Figure 5 ) is used to drive the power roller 220 to rotate. The reversing of the pulley transmission device 100 refers to the switching of the rotation direction of the output wheel 114 to match different winding directions. The driving wheel and the driven wheel in the first transmission wheel assembly 112 and the second transmission wheel assembly 113 can be connected by electromagnetic clutch, mechanical clutch, or other detachable connection.

[0032] In the pulley transmission device 100 of the embodiment of the present application, the first driving wheel 1121 and the second driving wheel 1131 rotate in the same direction, the first driven wheel 1122 and the output wheel 114 rotate in the opposite direction, and the second driven wheel 1132 and the output wheel 114 rotate in the same direction. One of the first driven wheel 1122 and the second driven wheel 1132 is controlled to be a power wheel and the other is controlled to be a driven wheel by mechanical clutch or electromagnetic clutch. When the first driven wheel 1122 is used as a power wheel, the first driven wheel 1122 drives the output wheel 114 to rotate in the opposite direction relative to the first driving wheel 1121; when the second driven wheel 1132 is used as a power wheel, the second driven wheel 1132 drives the output wheel 114 to rotate in the same direction relative to the second driving wheel 1131; the output wheel 114 changes its direction, thereby driving the contact pulley 121 to change its direction, thereby realizing reversing winding. Since the first driving wheel 1121 and the second driving wheel 1131 are driven by the same driving assembly 111, the undesirable phenomenon of uneven tension of the material belt caused by poor synchronous control of multiple motors is overcome, the structure of the entire transmission system is simplified, and the conveying quality of the material belt is improved.

[0033] In some embodiments of the present application, the first driven wheel 1122 is transmission-connected to the inner side of the output transmission belt 131, and the second driven wheel 1132 and the output wheel 114 are transmission-connected to the outer side of the output transmission belt 131, thereby enabling the first driven wheel 1122 to rotate in the opposite direction to the output wheel 114, and the second driven wheel 1132 to rotate in the same direction as the output wheel 114.

[0034] In other embodiments, the first driven wheel 1122 may be in driving connection with the outer side of the output transmission belt 131 , and the second driven wheel 1132 and the output wheel 114 may be in driving connection with the inner side of the output transmission belt 131 .

[0035] In some embodiments of the present application, the output wheel 114 is transmission-connected to the outer side of the winding drive belt 134 , the contact pulley 121 is transmission-connected to the inner side of the winding drive belt 134 , and the output wheel 114 and the contact pulley 121 rotate in opposite directions.

[0036] Specifically, driven by the driving component 111, the first driving wheel 1121 and the first driven wheel 1122 both rotate along the first direction P; when the first driven wheel 1122 drives the output wheel 114 to rotate, the first driven wheel 1122 rotates along the first direction P, the output wheel 114 rotates in the opposite direction of the first direction P, and the contact pulley 121 rotates along the first direction P; when the second driven wheel 1132 drives the output wheel 114 to rotate, the second driven wheel 1132 and the output wheel 114 both rotate along the first direction P, and the contact pulley 121 rotates in the opposite direction of the first direction P.

[0037] The first direction P is a clockwise direction; in other embodiments, the first direction P may also be a counterclockwise direction.

[0038] In other embodiments, the output wheel 114 and the contact pulley 121 may also be transmission-connected to the same side of the winding drive belt 134 , and the output wheel 114 and the contact pulley 121 rotate in the same direction.

[0039] In some embodiments of the present application, the first driving wheel 1121 and the first driven wheel 1122 are connected by electromagnetic clutch, and the second driving wheel 1131 and the second driven wheel 1132 are connected by electromagnetic clutch. Figure 1 As shown, when the first transmission wheel assembly 112 is in a powered-on state and the second transmission wheel assembly 113 is in a powered-off state, the first driving wheel 1121 drives the first driven wheel 1122 to rotate along the first direction P, and the first driven wheel 1122 drives the output wheel 114 to rotate in the opposite direction of the first direction P through the output transmission belt 131, and the output wheel 114 drives the contact pulley 121 to rotate synchronously through the winding transmission belt 134; Figure 4As shown, when the first transmission wheel assembly 112 is in a power-off state and the second transmission wheel assembly 113 is in a power-on state, the second driving wheel 1131 drives the second driven wheel 1132 to rotate along the first direction P, the second driven wheel 1132 drives the output wheel 114 to rotate along the first direction P through the output transmission belt 131, and the output wheel 114 drives the contact pulley 121 to rotate synchronously through the winding transmission belt 134.

[0040] The first transmission wheel assembly 112 and the second transmission wheel assembly 113 are both electromagnetic clutch double wheels, which can quickly realize the transmission connection and mutual independence of the driving wheel and the driven wheel by powering on or off, and switch between power transmission to the first driven wheel 1122 or the second driven wheel 1132, thereby realizing the reversal of the output wheel 114.

[0041] In other embodiments, the first transmission wheel assembly 112 and the second transmission wheel assembly 113 may also realize transmission connection between the driving wheel and the driven wheel or independent rotation thereof through other transmission modes.

[0042] In some embodiments of the present application, the drive assembly 111 includes a first motor 1111, a first synchronous wheel 1112 and a second synchronous wheel 1113, the output shaft of the first motor 1111 is connected to the first synchronous wheel 1112, the first synchronous wheel 1112 and the second synchronous wheel 1113 are connected via a first transmission belt 132, and the second synchronous wheel 1113, the first driving wheel 1121 and the second driving wheel 1131 are connected via a second transmission belt 133.

[0043] The first synchronous wheel 1112 and the second synchronous wheel 1113 both support the first transmission belt 132 from the inside, and the first driving wheel 1121, the second driving wheel 1131 and the second synchronous wheel 1113 all support the second transmission belt 133 from the inside, thereby achieving the same direction of rotation of the above-mentioned several pulleys and simplifying the transmission process.

[0044] The output shaft of the first motor 1111 rotates along the first direction P, and the first motor 1111 can drive the first driving wheel 1121 and the second driving wheel 1131 to rotate along the first direction P. On the one hand, during the reversing process, the output shaft of the first motor 1111 always rotates along the first direction P, which simplifies the pulley steering process; on the other hand, since the entire pulley transmission device 100 is only equipped with one first motor 1111 to provide power for the belt walking, the undesirable phenomenon of unstable material belt tension caused by the superposition of fluctuation amplitudes of multiple servo motors is overcome, thereby improving the stability of material belt conveying.

[0045] In other embodiments, the first motor 1111 may also transmit power to the first driving wheel 1121 and the second driving wheel 1131 in other ways.

[0046] like Figure 3As shown, further, the second synchronous wheel 1113 includes an inner pulley 1114 and an outer pulley 1115 which are coaxially connected to each other, the inner pulley 1114 is connected to the first transmission belt 132 , and the outer pulley 1115 is connected to the second transmission belt 133 .

[0047] Through this arrangement, the number of pulleys in the pulley transmission device 100 is reduced, and the transmission structure of the pulley transmission device 100 is simplified.

[0048] In other embodiments, the second synchronous wheel 1113 may also transmit power to the second transmission belt 133 by means of gear meshing.

[0049] In some embodiments of the present application, the slitting transmission unit 110 also includes a flattening transmission wheel 115 and a spacer transmission wheel 116, the flattening transmission wheel 115 is used to drive the flattening roller 250 to rotate, and the spacer transmission wheel 116 is used to drive the spacer 211 to rotate; wherein the flattening transmission wheel 115 and the spacer transmission wheel 116 are both connected to the first transmission belt 132 for transmission.

[0050] Through this arrangement, the first transmission belt 132 can drive the corresponding flattening roller 250 and the spacer sleeve 211 in the slitting process to rotate synchronously, thereby simplifying the transmission process.

[0051] In other embodiments, the first transmission belt 132 may also drive other driven pulleys to rotate synchronously, and further drive certain rollers to rotate synchronously, so as to stabilize the conveying belt.

[0052] In addition to being able to realize the reversing winding function, the pulley transmission device 100 of the embodiment of the present application also has a differential adjustment structure, which can reduce the tension fluctuation amplitude of the material belt during the conveying process and improve the walking stability of the material belt.

[0053] like Figure 1 and Figure 3 As shown, in some embodiments of the present application, the contact pulley 121 includes a reducer 1211 and a third synchronous wheel 1212, the reducer 1211 includes an input shaft 1213, an output shaft 1214 and a base 1215, the third synchronous wheel 1212 is installed on the base 1215, the third synchronous wheel 1212 is connected to the output wheel 114 through a winding drive belt 134, the winding drive unit 120 also includes a second motor 122 for driving the input shaft 1213 to rotate, and the output shaft 1214 is connected to the contact roller 230; wherein the second motor 122 is configured to adjust the speed based on a preset speed difference ratio between the power roller 220 and the contact roller 230 and the speed of the third synchronous wheel 1212.

[0054] The input shaft 1213 of the contact pulley 121 is rotatably supported by a bearing seat 1216 , and the output shaft 1214 is rotatably supported by another bearing seat 1216 .

[0055] In some embodiments of the present application, the material strip refers to the diaphragm, an important component of the lithium battery, which is cut into two separate material strips at one time; in other embodiments, the material strip may also refer to other types of material strips that need to be cut.

[0056] The first motor 1111 is used to drive the output wheel 114 to rotate, and the output wheel 114 drives the contact pulley 121 to rotate through the winding transmission belt 134 to guide the material strip to enter the winding roller 240 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; the second motor 122 is connected to the contact roller 230 through the reducer 1211, which can improve the accuracy and stability of speed difference adjustment. Using the pulley transmission device 100 of the embodiment of the present application to provide power for the slitting and winding device 200 can not only realize reversing winding, but also reduce the tension fluctuation amplitude of the material strip during the slitting and winding process, reduce the possibility of wrinkling or tearing of the material strip due to uneven tension, and improve the quality of slitting and winding of the material strip.

[0057] The third synchronous wheel 1212 is connected to the output wheel 114 through the winding transmission belt 134. The function of the winding transmission belt 134 is to drive the third synchronous wheel 1212 and the output wheel 114 to rotate synchronously. The contact roller 230 is located downstream of the power roller 220. In order to adjust the tension of the material belt and meet the production requirements of different working conditions, it is necessary to set the second motor 122, which is used to adjust the speed of the contact roller 230; that is, the first motor 1111 is used as a power source for the rotation of the power roller 220 and the contact roller 230, and the second motor 122 plays a role in adjusting the speed of the contact roller 230, so as to achieve a fixed speed difference ratio between the power roller 220 and the contact roller 230. It can be understood that for engineering and technical personnel, it is hoped that the speed difference ratio between the power roller 220 and the contact roller 230 is maintained at a fixed value, that is, it is hoped that the material belt has a constant tension. In order to maintain the preset speed difference ratio, it is necessary to set the second motor 122 to adjust the speed of the contact roller 230.

[0058] The second motor 122 adjusts the rotation speed of the contact roller 230. The contact roller 230 drives the material belt to move forward through the friction between the roller surface and the material belt, so that the material belt enters the winding roller 240 for winding. As a preferred embodiment, the linear speed of the contact roller 230 is greater than the running speed of the material belt itself, and the material belt is driven to move forward through the sliding friction.

[0059] In some embodiments of the present application, the third synchronization wheel 1212 is sleeved on the base 1215 .

[0060] Specifically, the third synchronous wheel 1212 is fixedly mounted on the outer ring of the base 1215, and the third synchronous wheel 1212 drives the base 1215 to rotate synchronously. The second motor 122 is connected to the contact roller 230 through the reducer 1211, and the second motor 122 is fixedly installed on the external frame and connected to the input shaft 1213 of the reducer 1211.

[0061] With this form, the speed reducer 1211 can be easily and reliably mounted on the contact roller 230 .

[0062] In other embodiments, the third synchronous wheel 1212 may also be transmission-connected to the base 1215 via a transmission gear ring or the like.

[0063] In some embodiments of the present application, the output shaft of the second motor 122 is provided with a differential output wheel (not shown in the figure), and the differential output wheel is transmission-connected to the input shaft 1213 via a third transmission belt 135 .

[0064] The power of the second motor 122 can be output to the input shaft 1213 through the third transmission belt 135. By setting the reducer 1211, the adjustment range of the roller speed can be narrowed, and the adjustment accuracy of the roller speed can be increased. After the action of the reducer 1211, the speed fluctuation value of the second motor 122 is significantly reduced.

[0065] In some embodiments of the present application, there are two winding transmission units 120 , and the contact pulleys 121 of the two winding transmission units 120 and the output wheel 114 are used together by the winding transmission belt 134 to achieve synchronous rotation.

[0066] Specifically, each contact roller 230 receives a dividing belt respectively, and the two contact rollers 230 are located on both sides of the power roller 220 and are connected by a winding drive belt 134.

[0067] In other embodiments, the winding transmission unit 120 is provided in one-to-one correspondence with the dividing strips according to the number of dividing strips formed by slitting.

[0068] like Figure 5 and Figure 6 As shown, the slitting and winding equipment 200 of some embodiments of the present application uses a pulley transmission device 100, and the slitting and winding equipment 200 includes a slitting mechanism 210, a power roller 220, a contact roller 230 and a winding roller 240. The slitting mechanism 210 is used to slit the material belt to form two divided material belts, the power roller 220 is transmission-connected to the output wheel 114, and the contact roller 230 is transmission-connected to the contact pulley 121; the power roller 220 and the contact roller 230 are arranged opposite to each other, and the material belt is slit to form two divided material belts after passing through the slitting mechanism 210, and the two divided material belts pass through the power roller 220 and the contact roller 230 in turn and then enter the winding roller 240 for winding.

[0069] Due to the characteristics of the pulley transmission device 100 of the embodiment of the present application, the slitting and winding device 200 of the embodiment of the present application can achieve reversing winding and has a good material conveying quality.

[0070] The slitting mechanism 210 includes a spacer sleeve 211 and a cutter 212. The flattening roller 250 is located upstream of the slitting mechanism 210 and is used to flatten the material strip. The spacer sleeve 211 and the cutter 212 are arranged opposite to each other. The material strip enters the slitting mechanism 210 after passing through the flattening roller 250. The spacer sleeve 211 has a cutting groove or a cutter body. The cutter 212 is an upper cutter. The cutter 212 and the cutting groove or the cutter body form a shearing effect to cut the material strip into two separated material strips.

[0071] like Figure 7 As shown, the slitting and winding device 200 also includes an unwinding mechanism 260, a tension detection mechanism 270 and a deviation correction mechanism 280. The unwinding mechanism 260 is used to unwind the material strip, the tension detection mechanism 270 is used to detect the tension of the material strip, and the deviation correction mechanism 280 is used to correct the deviation of the material strip. The material strip unwound by the unwinding mechanism 260 passes through the deviation correction mechanism 280, the tension detection mechanism 270, the flattening roller 250, and the slitting mechanism 210 in sequence to form two separate material strips. The separate material strips pass through the power roller 220 and enter the corresponding contact rollers 230 respectively, and are wound up by the corresponding winding rollers 240.

[0072] It can be understood that during the conveying process of the material belt or the divided material belt, multiple rollers for reversing and tensioning are bypassed to ensure that the material belt or the divided material belt is conveyed along a preset path.

[0073] Based on the implementation method of slitting to form two strips, two contact rollers 230 and two winding rollers 240 are provided, and each strip enters the corresponding contact roller 230 and is then wound up by the corresponding winding roller 240 .

[0074] In some embodiments of the present application, the slitting and winding device 200 also includes a control device configured to adjust the output speed of the second motor 122 according to the speed difference ratio between the power roller 220 and the contact roller 230 and the output speed of the third synchronous wheel 1212 of the contact pulley 121.

[0075] The control device is electrically connected to the first motor 1111 and the second motor 122. The control device controls the output speed of the first motor 1111 according to the preset linear speed of the power roller 220 and the preset speed difference ratio. In order to maintain the speed difference between the power roller 220 and the contact roller 230 at a fixed value, the output speed of the second motor 122 is adjusted.

[0076] The reversing transmission process of the pulley transmission device 100 and the slitting and winding device 200 of the embodiment of the present application is as follows:

[0077] The output shaft of the first motor 1111 drives the first synchronous wheel 1112 to rotate, the first synchronous wheel 1112 and the second synchronous wheel 1113 are connected by the first transmission belt 132, the second synchronous wheel 1113, the first driving wheel 1121 and the second driving wheel 1131 are connected by the second transmission belt 133, the first driven wheel 1122, the second driven wheel 1132 and the output wheel 114 are connected by the output transmission belt 131, the first driving wheel 1121 and the second driving wheel 1131 rotate in the same direction, the first driven wheel 1122 can rotate in the opposite direction to the output wheel 114, the second driven wheel 1132 can rotate in the same direction to the output wheel 114, the output wheel 114 and the third synchronous wheel 1212 contacting the pulley 121 are connected by the winding transmission belt 134 and rotate in the opposite direction;

[0078] The output shaft of the first motor 1111 rotates along the first direction P, driving the first synchronous wheel 1112 to rotate along the first direction P. The first synchronous wheel 1112 drives the second synchronous wheel 1113 to rotate along the first direction P through the first transmission belt 132. The second synchronous wheel 1113 drives the first driving wheel 1121 and the second driving wheel 1131 to rotate along the first direction P through the second transmission belt 133.

[0079] like Figure 1 and Figure 5 As shown, when the first transmission wheel assembly 112 is in a powered-on state and the second transmission wheel assembly 113 is in a powered-off state, the first driving wheel 1121 drives the first driven wheel 1122 to rotate along the first direction P, and the first driven wheel 1122 drives the output wheel 114 to rotate in the opposite direction of the first direction P through the output transmission belt 131, and the output wheel 114 drives the contact pulley 121 to rotate in the first direction P. At this time, the winding roller 240 rotates in the opposite direction of the first direction P to wind up;

[0080] like Figure 3 and Figure 6 As shown, when the first transmission wheel assembly 112 is in a power-off state and the second transmission wheel assembly 113 is in a power-on state, the second driving wheel 1131 drives the second driven wheel 1132 to rotate along the first direction P, and the second driven wheel 1132 drives the output wheel 114 to rotate in the same direction as the first direction P through the output transmission belt 131, and the output wheel 114 drives the contact pulley 121 to rotate in the opposite direction of the first direction P. At this time, the winding roller 240 rotates and winds in the positive direction of the first direction P;

[0081] When the output shaft of the first motor 1111 always rotates in the first direction P, the switching of the output wheel 114 is achieved by controlling the clutch of the first transmission wheel assembly 112 and the second transmission wheel assembly 113, thereby achieving switching winding, overcoming the undesirable phenomenon of uneven tension of the material belt caused by synchronous control of multiple motors, simplifying the structure of the entire transmission system, and improving the conveying quality of the material belt.

[0082] The differential speed adjustment process of the pulley transmission device 100 and the slitting and winding device 200 of the embodiment of the present application is as follows:

[0083] The output wheel 114 is connected to the third synchronous wheel 1212 of the contact pulley 121 through the winding transmission belt 134. At the same time, the differential output wheel of the second motor 122 is connected to the input shaft 1213 of the corresponding reducer 1211 through the third transmission belt 135. The output shaft 1214 of the reducer 1211 is connected to the corresponding contact roller 230 through the coaxial transmission, so that the speed of the contact roller 230 can be adjusted with high precision through the second motor 122, so that the speed difference △ between the power roller 220 and the contact roller 230 is maintained at a fixed value;

[0084] The first motor 1111 rotates to drive the output wheel 114 and the third synchronous wheel 1212 to rotate, and the second motor 122 adjusts the rotation speed of the contact roller 230 through the reducer 1211 so that the speed difference between the contact roller 230 and the power roller 220 is maintained at a fixed value.

[0085] The speed of the second motor 122 is calculated as follows:

[0086] The rotation speed of the contact roller 230 is equal to the rotation speed w of the output shaft 1214 输出 , the reduction ratio of the reducer 1211 is i, and the speed of the third synchronous wheel 1212 is w 主线 is the reference speed.

[0087] w 输出 The calculation formula is:

[0088]

[0089] For example, when w 输入 =w 主线 When 输出 =w 主线 , the rotation speed of the power roller 220 is the same as the rotation speed of the contact roller 230, 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.

[0090] The speed difference ratio between the power roller 220 and the contact roller 230 is:

[0091] Δ=(w 物出 -w 主线 ) / w 主线

[0092] Through the above two formulas, we can get:

[0093] w 输入 =w 主线 ×(1+i×Δ)

[0094] The control device automatically adjusts the rotation speed of the second motor 122 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.

[0095] 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.

[0096] When the slitting and winding device 200 of the embodiment of the present application is used to wind up the divided material strips formed by slitting, the speed difference fluctuation amplitude between adjacent rollers is small, and the tension fluctuation amplitude of the material strip and the divided material strip 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.

[0097] It should be noted that, in the absence of conflict, the features in the embodiments of this application may be combined with each other.

[0098] 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 pulley transmission device (100), characterized in that: It comprises a slitting transmission unit (110) and a winding transmission unit (120); The slitting transmission unit (110) comprises: An output wheel (114) is used to drive the power roller to rotate; A first transmission wheel assembly (112), comprising a first driving wheel (1121) and a first driven wheel (1122), wherein the first driving wheel (1121) and the first driven wheel (1122) are detachably connected; A second transmission wheel assembly (113), comprising a second driving wheel (1131) and a second driven wheel (1132), wherein the second driving wheel (1131) and the second driven wheel (1132) are detachably connected; A driving assembly (111) for driving the first driving wheel (1121) and the second driving wheel (1131) to rotate in the same direction; The first driven wheel (1122), the second driven wheel (1132) and the output wheel (114) are connected in transmission via an output transmission belt (131); the first driven wheel (1122) can rotate in the opposite direction to the output wheel (114), and the second driven wheel (1132) can rotate in the same direction as the output wheel (114); The winding transmission unit (120) comprises: The contact pulley (121) is used to drive the contact roller to rotate, and the contact pulley (121) and the output wheel (114) are connected in transmission via a winding transmission belt (134).

2. The pulley transmission device (100) according to claim 1, characterized in that: The first driving wheel (1121) and the first driven wheel (1122) are connected by electromagnetic clutch, and the second driving wheel (1131) and the second driven wheel (1132) are connected by electromagnetic clutch; When the first transmission wheel assembly (112) is in a powered-on state and the second transmission wheel assembly (113) is in a powered-off state, the first driving wheel (1121) drives the first driven wheel (1122) to rotate in a first direction, the first driven wheel (1122) drives the output wheel (114) to rotate in a direction opposite to the first direction through the output transmission belt (131), and the output wheel (114) drives the contact pulley (121) to rotate synchronously through the winding transmission belt (134); When the first transmission wheel assembly (112) is in a power-off state and the second transmission wheel assembly (113) is in a power-on state, the second driving wheel (1131) drives the second driven wheel (1132) to rotate along the first direction, the second driven wheel (1132) drives the output wheel (114) to rotate along the first direction via the output transmission belt (131), and the output wheel (114) drives the contact pulley (121) to rotate synchronously via the winding transmission belt (134).

3. The pulley transmission device (100) according to claim 1, characterized in that: The driving assembly (111) comprises: A first motor (1111); A first synchronous wheel (1112) and a second synchronous wheel (1113); The output shaft of the first motor (1111) is transmission-connected to the first synchronous wheel (1112); the first synchronous wheel (1112) and the second synchronous wheel (1113) are transmission-connected via a first transmission belt (132); the second synchronous wheel (1113), the first driving wheel (1121) and the second driving wheel (1131) are connected via a second transmission belt (133).

4. The pulley transmission device (100) according to claim 3, characterized in that: The second synchronous wheel (1113) comprises an inner pulley (1114) and an outer pulley (1115) which are coaxially connected, the inner pulley (1114) being connected to the first transmission belt (132) in transmission, and the outer pulley (1115) being connected to the second transmission belt (133) in transmission.

5. The pulley transmission device (100) according to claim 3, characterized in that: The slitting transmission unit (110) further comprises: A flattening drive wheel (115), used for driving the flattening roller to rotate; A spacer sleeve driving wheel (116), used for driving the spacer sleeve to rotate; Wherein, the flattening transmission wheel (115) and the spacer transmission wheel (116) are both transmission-connected to the first transmission belt (132).

6. The pulley transmission device (100) according to claim 1, characterized in that: The contact pulley (121) comprises a reducer (1211) and a third synchronous wheel (1212); the reducer (1211) comprises an input shaft (1213), an output shaft (1214) and a base (1215); the third synchronous wheel (1212) is mounted on the base (1215); the third synchronous wheel (1212) is connected to the output wheel (114) via a winding transmission belt (134); the winding transmission unit (120) further comprises: A second motor (122) is used to drive the input shaft (1213) to rotate, and the output shaft (1214) is used to be drivingly connected to the contact roller; Wherein, the second motor (122) is configured to adjust the rotation speed based on a preset speed difference ratio between the power roller and the contact roller and the rotation speed of the third synchronous wheel (1212).

7. The pulley transmission device (100) according to claim 6, characterized in that: The third synchronous wheel (1212) is sleeved on the base (1215).

8. The pulley transmission device (100) according to claim 6, characterized in that: The output shaft of the second motor (122) is provided with a differential output wheel, and the differential output wheel is transmission-connected to the input shaft (1213) via a third transmission belt (135).

9. The pulley transmission device (100) according to claim 1, characterized in that: The winding transmission units (120) have two, and the contact pulleys (121) of the two winding transmission units (120) and the output wheel (114) are used together to achieve synchronous rotation using the winding transmission belt (134).

10. A slitting and winding device (200) using the pulley transmission device (100) according to any one of claims 1 to 9, characterized in that: include: A slitting mechanism (210) for slitting a material strip; A power roller (220) is drivingly connected to the output wheel (114); A contact roller (230) is drivingly connected to the contact pulley (121); Winding roller (240); The power roller (220) and the contact roller (230) are arranged opposite to each other, and the material strip is cut into two divided material strips after passing through the slitting mechanism (210). The divided material strips pass through the power roller (220) and the contact roller (230) in sequence and then enter the winding roller (240) for winding.

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