Labeling structure and control system for ultra-thin labels of lithium battery packs

Abstract

The present invention relates to the technical field of lithium battery production, and more specifically, to a labeling structure and control system for ultra-thin labels of lithium battery packs, comprising: a retractable feeder assembly, a code scanning assembly and a label taking robot assembly; the retractable feeder assembly comprises: a material discharging mechanism for installing a label material roll and discharging the label material roll, and the active end material belt of the label material roll passes through a gravity floating roller mechanism, a tension sensor mechanism, a belt pressing mechanism, a stripping knife transmission mechanism and a traction mechanism installed on a frame in sequence. The label material belt is tensioned by the gravity floating roller mechanism, and the tension detection roller around which the material belt is wound serves as tension feedback, and the detected signal is fed back to the controller. The controller automatically adjusts the air pressure of a low-friction cylinder through its internal algorithm to realize tension control, so that the tension of the label material belt remains relatively constant during the transmission process, and the problem of label position change or wrinkles caused by excessive tension changes is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery production, and more specifically to a labeling structure and control system for ultra-thin labels of lithium battery packs. Background Art

[0002] The substrate of the ultra-thin label roll of lithium battery pack is generally made of 0.025-0.038mm thick textured noise-reducing PET material, and the peeling force is about 0.8Kgf. The substrate and glue of the label roll are on the outside, and the backing paper is on the inside. The label is thin and the backing paper is thick. The ductility of the label and the backing paper is quite different. Considering the above factors, when the label changes from the bent state of the roll to the unfolded horizontal state, it will be squeezed by the backing paper, causing the problem of wrinkle deformation of the label. As the radius of the roll becomes smaller and smaller, the wrinkle deformation becomes more and more obvious. Wrinkles are generated before labeling, which will cause abnormal scanning, vacuum leakage of label absorption, inaccurate labeling position, etc., affecting the automatic labeling packaging effect of lithium battery pack. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a labeling structure and a control system for ultra-thin labels of lithium battery packs.

[0004] The technical solution adopted by the present invention is:

[0005] The label discharging structure for ultra-thin labels of lithium battery packs includes: a retractable feeder assembly, a code scanning assembly and a label taking robot assembly; the retractable feeder assembly includes: a material discharging mechanism for installing a label material roll and discharging the label material roll, the movable end material belt of the label material roll passes through a gravity floating roller mechanism, a tension sensor mechanism, a belt pressing mechanism, a stripping knife transmission mechanism and a traction mechanism installed on a frame in sequence, and is connected to a bottom paper rewinding mechanism for rolling up the bottom paper of the label material roll into a bottom paper waste roll; the code scanning assembly is used to scan the labels on the material belt discharged by the material discharging mechanism; the label taking robot assembly is used to cooperate with the stripping knife transmission mechanism to remove the labels on the material belt.

[0006] Furthermore, the unloading mechanism includes: an unloading motor mounted on the frame, a pulley of the unloading motor output shaft is connected to a pulley fixed on the unloading air shaft through a synchronous belt drive, and the unloading air shaft rotatably mounted on the frame is used to install the label material roll.

[0007] Furthermore, it also includes: multiple pairs of opposing optical fibers installed on the frame, the label material roll on the unwinding mechanism is located between the multiple pairs of opposing optical fibers, and the multiple pairs of opposing optical fibers are arranged in sequence from close to the axis center of the label material roll to away from the axis center of the label material roll, so as to detect the radial intervals at different positions of the label material roll through the multiple pairs of opposing optical fibers.

[0008] Furthermore, the gravity floating roller mechanism includes: a floating roller body, one end of the floating roller body is rotatably connected to a slide seat slidably mounted on the longitudinal guide rail of the frame, and the slide seat is connected to the output end of a low-friction cylinder mounted on the frame through a floating joint; the tension sensor mechanism includes: a tension detection roller and a floating roller position detection sensor installed on the frame; the floating roller body is located between a fixed guide roller and a tension detection roller rotated on the frame; the material tape of the label material roll is sequentially wound around the fixed guide roller, the floating roller body and the tension detection roller; the floating roller body is located between the upper and lower floating roller position detection sensors on the side of the frame, and the position of the floating roller body is detected by the two floating roller position detection sensors.

[0009] Furthermore, the stripping knife transmission mechanism includes: a stripping knife base slidably mounted on a linear guide rail of a frame, the stripping knife base is threadedly connected to a ball screw, and the ball screw is connected to an output end of a servo motor mounted on the frame; two rubber-coated rollers for squeezing out bubbles in the label are rotated at one end of the stripping knife base close to the gravity floating roller mechanism, and the material strip of the label material roll passes through a rolling area between the two rubber-coated rollers, and is wound around a stripping knife body and an auxiliary roller of the stripping knife base, and then is passed through a plurality of guide rollers on the frame.

[0010] Furthermore, the traction mechanism includes: a traction roller and a clamping roller assembly rotated on the frame, the traction roller is connected to the traction motor installed on the frame, the clamping roller assembly includes: a clamping cylinder installed on the frame, the output end of the clamping cylinder is connected to a roller frame slidably mounted on the horizontal guide rail of the frame, two clamping rollers rotated on the roller frame are rollingly engaged with the side of the traction roller, and the material strip of the label material roll is pulled and guided by the stripping knife transmission mechanism to the base paper rewinding mechanism under the clamping cooperation of the traction roller and the two clamping rollers.

[0011] Furthermore, the labeling structure for ultra-thin labels of lithium battery packs also includes: a dual laser sensor detection component, the dual laser sensor detection component includes: a sensor bracket and two digital laser sensors installed on the sensor bracket, the two digital laser sensors are respectively set at different positions of the peeling knife transmission mechanism, and the No. 1 laser sensor and the No. 2 laser sensor are set at different positions of the feeding belt of the peeling knife transmission mechanism; the No. 1 laser sensor sends a signal to the controller after detecting the label, and the controller controls the traction mechanism to reduce the speed of traction of the material belt; the No. 2 laser sensor sends a signal to the controller after detecting the label, and the controller controls the traction mechanism to stop traction of the material belt.

[0012] Furthermore, the label removal robot assembly includes: a four-axis robot, the output end of the four-axis robot is connected to the robot end of the robot quick-change fixture, the tool end of the robot quick-change fixture is connected to a silicone suction plate cavity assembly for adsorbing labels on the material strip, and the silicone suction plate cavity assembly is connected to a vacuum pump.

[0013] Furthermore, the silicone suction plate cavity assembly includes: a shell connected to the robot quick-change fixture, a soft silicone plate with multiple vacuum suction holes connected to the bottom of the shell, and a vacuum suction cavity is formed between the soft silicone plate and the shell.

[0014] Furthermore, the code scanning component includes: a code scanning gun for scanning the label on the material strip and a code scanning angle position adjustment mechanism for connecting and supporting the code scanning gun.

[0015] The control system is applied to the labeling structure for the ultra-thin label of lithium battery pack.

[0016] It can be seen from the above scheme that the beneficial effects of the present invention are:

[0017] In a labeling structure and control system for ultra-thin labels of lithium battery packs of the present invention, a tension is applied to the label material strip by a gravity floating roller mechanism, a tension detection roller around which the material strip is wound serves as tension feedback, the tension detection roller detects the tension of the material strip in real time, and feeds back the detected signal to a controller, the controller automatically adjusts the air pressure of a low-friction cylinder through its internal algorithm to realize tension control, so that the tension of the label material strip is relatively constant during the transmission process, and the problem of label position change or wrinkle caused by excessive tension change is reduced; the position of the floating roller body is detected by a floating roller position detection sensor to feedback a signal to control the unloading mechanism to start and stop unloading, the label material roll on the unloading mechanism is divided into a plurality of speed intervals by a plurality of pairs of opposing optical fibers, the radius interval of the label material roll is detected by the opposing optical fibers, and the unloading servo motor is controlled to actively adjust the unloading speed according to the detection signal, so as to ensure that the label material roll can maintain a relatively constant speed of unloading as the radius continues to decrease, and reduce the influence of the constant tension of the label material strip during the transmission process.

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 An overall schematic diagram of a labeling structure provided by an embodiment of the present invention;

[0021] Figure 2 A partial schematic diagram of a labeling structure provided in an embodiment of the present invention Figure 1 ;

[0022] Figure 3 A partial schematic diagram of a labeling structure provided in an embodiment of the present invention Figure 2 ;

[0023] Figure 4 A schematic diagram of a traction mechanism provided by an embodiment of the present invention;

[0024] Figure 5 Schematic diagram of the stripping knife transmission mechanism provided in the embodiment of the present invention Figure 1 ;

[0025] Figure 6 Schematic diagram of the stripping knife transmission mechanism provided in the embodiment of the present invention Figure 2 ;

[0026] Figure 7 A structural schematic diagram of a gravity floating roller mechanism provided in an embodiment of the present invention;

[0027] Figure 8 A schematic diagram of a code scanning component provided in an embodiment of the present invention;

[0028] Fig. 9 A schematic diagram of a label removal robot assembly provided in an embodiment of the present invention;

[0029] Fig.10 A schematic diagram of a material discharging mechanism provided in an embodiment of the present invention;

[0030] Fig.11 A partial schematic diagram of a traction mechanism and a bottom paper rewinding mechanism provided in an embodiment of the present invention;

[0031] Fig.12 A schematic diagram of a clamping roller assembly provided in an embodiment of the present invention;

[0032] Fig.13 A schematic diagram of a dual laser sensor detection assembly provided by an embodiment of the present invention;

[0033] Fig.14 A schematic diagram of a robot quick-change fixture provided by an embodiment of the present invention from a first angle;

[0034] Fig.15 A second angle schematic diagram of the robot quick-change fixture provided by an embodiment of the present invention;

[0035] Fig.16 A cross-sectional view of a robot quick-change fixture provided by an embodiment of the present invention;

[0036] Fig.17 A partial schematic diagram of a robot quick-change fixture provided in an embodiment of the present invention Figure 1 ;

[0037] Fig.18 A partial schematic diagram of a robot quick-change fixture provided in an embodiment of the present invention Figure 2 .

[0038] Icons: Opposite optical fiber 1; label material roll 2; unloading air shaft 3; tension sensor mechanism 4; waste base paper roll 5; base paper rewinding mechanism 6; rewinding shaft 6-1; driven pulley 2 6-2; rewinding air shaft 6-3; traction mechanism 7; traction roller 7-1; clamping roller assembly 7-2; driven pulley 1 7-3; fixed guide roller 8; rubber-coated roller 9; stripping knife transmission mechanism 10; stripping knife base 10-1; ball screw 10-2; servo motor 10-3; stripping knife body 10-4; auxiliary roller 10-5; frame 11; sensor bracket 12; digital laser sensor 13; four-axis robot 14; robot quick-change fixture 15; silicone suction plate cavity assembly 16; code scanning gun 17; code scanning angle position adjustment mechanism 18; unloading motor 19; gravity floating roller mechanism 20; slotted sleeve 21; guide roller 22; traction motor 23; driving pulley 24. DETAILED DESCRIPTION

[0039] In order to clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention, it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0041] See also Figure 1-Figure 18 The labeling structure for ultra-thin labels of lithium battery packs of the present invention comprises: a retractable feeder assembly, a code scanning assembly and a label taking robot assembly; the retractable feeder assembly comprises: a material discharging mechanism for installing a label material roll 2 and discharging the label material roll 2; the movable end material belt of the label material roll 2 passes through a gravity floating roller mechanism 20, a tension sensor mechanism 4, a belt pressing mechanism 46, a stripping knife transmission mechanism 10 and a traction mechanism 7 installed on a frame 11 in sequence, and is connected to a bottom paper rewinding mechanism 6 for rewinding the bottom paper of the label material roll 2 into a bottom paper waste roll 5; the code scanning assembly is used to scan the label on the material belt of the label material roll 2 released by the discharging mechanism; the label taking robot assembly is used to cooperate with the stripping knife transmission mechanism 10 to remove the label on the material belt.

[0042] The labeling structure for ultra-thin labels of lithium battery packs of the present invention, when labeling ultra-thin labels of lithium battery packs, installs the label material roll 2 on the unloading mechanism, and controls the active end material belt of the label material roll 2 to pass through the gravity floating roller mechanism 20, the tension sensor mechanism 4, the belt pressing mechanism 46, the stripping knife transmission mechanism 10 and the traction mechanism 7 installed on the frame 11 in sequence, and is connected with the bottom paper rewinding mechanism 6 used for rewinding the bottom paper of the label material roll 2 into the bottom paper waste roll 5, and then the unloading mechanism can be opened for unloading, and the traction mechanism 7 is opened to pull the material belt synchronously, and the bottom paper rewinding mechanism 6 is opened to rewind the bottom paper after taking out the label, and the material belt bottom paper of the label material roll 2 is rewinded into the bottom paper waste roll 5. In the process of unwinding the label material roll 2, the gravity floating roller mechanism 20 is used to apply tension to the label material roll 2, and the position of the gravity floating roller mechanism 20 is detected by the tension sensor mechanism 4 to feedback to the unloading mechanism whether to start unloading, so as to facilitate the adjustment and control of the tension, so that the label material roll 2 can be unloaded during the transmission process. The tension in the middle is relatively constant, which reduces the problem of label position change or wrinkle caused by excessive tension change; when the label on the material belt moves to the position of the code scanning component under the traction of the traction mechanism 7, the label is scanned by the code scanning component, and when the label on the material belt moves to the peeling knife transmission mechanism 10, the label on the label material roll 2 is removed by the cooperation of the peeling knife transmission mechanism 10 and the label taking robot assembly, and the peeling knife transmission mechanism 10 absorbs the label when the label taking robot assembly adsorbs the label The label is withdrawn and peeled off. When the peeling knife transmission mechanism 10 withdraws, the label material roll 2 is pressed by the belt pressing mechanism 46. When the label material roll 2 is continuously conveyed after the peeling is completed, the belt pressing mechanism 46 is separated from the label material roll 2. The peeling distance is accurate and finally the label can be attached to the preset position by the label robot assembly. The belt pressing mechanism 46 includes a belt pressing cylinder installed on the frame 11 and a pressure plate connected to the output end of the belt pressing cylinder. The pressure plate is controlled by the belt pressing cylinder to press the label material roll 2 or separate from the label material roll 2, which is easy to operate.

[0043] The unloading mechanism includes: an unloading motor 19 mounted on the frame 11, the pulley of the output shaft of the unloading motor 19 is connected to the pulley fixed on the unloading air shaft 3 through a synchronous belt drive, and the unloading air shaft 3 rotatably mounted on the frame 11 is used to install the label material roll 2. The labeling structure for ultra-thin labels of lithium battery packs also includes: multiple pairs of opposing optical fibers 1 mounted on the frame 11, the label material roll 2 on the unloading mechanism is located between the multiple pairs of opposing optical fibers 1, and the multiple pairs of opposing optical fibers 1 are arranged in sequence from the direction close to the axis of the label material roll 2 to the direction away from the axis of the label material roll 2, so as to detect the radius intervals of different positions of the label material roll 2 through the multiple pairs of opposing optical fibers 1.

[0044] After the unloading motor 19 is started, the unloading air shaft 3 can be driven to rotate through the cooperation of two pulleys and the synchronous belt. When the unloading air shaft 3 rotates, it drives the label material roll 2 to be unfolded, so as to guide the label material roll 2 away. The label material roll 2 on the unloading mechanism is located between multiple pairs of opposing optical fibers 1. During the guiding process, the multiple pairs of opposing optical fibers 1 are arranged in sequence from the direction close to the axis of the label material roll 2 to the direction away from the axis of the label material roll 2, so as to detect the radius intervals of different positions of the label material roll 2 through the multiple pairs of opposing optical fibers 1. The label material roll 2 on the unloading air shaft 3 is divided into multiple speed intervals by the multiple pairs of opposing optical fibers 1. The radius interval of the label material roll 2 is measured, and the detection signal is transmitted to the controller. The controller controls the unloading motor 19 to adjust the unloading speed, thereby ensuring that the label material roll 2 maintains a relatively constant unloading speed, ensuring that the tension of the label material belt is relatively constant, and the unloading air shaft 3 can use the finished product purchased on the market. The purpose is to improve the installation and disassembly efficiency of the label material roll 2, which will not be elaborated here; multiple pairs of opposing optical fibers 1 are arranged on both sides of the label material roll 2, which can effectively solve the problem of single optical fiber detecting from bottom to top in the prior art, and stopping after detecting the label is prone to overshoot, and avoid the problem that overshoot reduces the traction speed and affects the label output rhythm.

[0045] The gravity floating roller mechanism 20 includes: a floating roller body, one end of which is rotatably connected to a slide seat slidably mounted on the longitudinal guide rail of the frame 11, and the slide seat is connected to the output end of a low-friction cylinder 49 mounted on the frame 11 through a floating joint 48; the tension sensor mechanism 4 includes: a tension detection roller and a floating roller position detection sensor 47 mounted on the frame 11; the floating roller body is located between a fixed guide roller 8 and a tension detection roller rotated on the frame 11; the material tape of the label material roll 2 is sequentially wound around the fixed guide roller 8, the floating roller body and the tension detection roller; the floating roller body is located between the upper and lower floating roller position detection sensors 47 on the side of the frame 11, and the position of the floating roller body is detected by the two floating roller position detection sensors 47.

[0046] The gravity floating roller mechanism 20 is designed to increase the tension control closed-loop function. The label material roll 2 is tensioned by the floating roller body. The tension detection roller of the tension sensor mechanism 4 is used to detect the tension change of the label material roll 2 and feed back the signal to the controller. The controller adjusts the output force of the low-friction cylinder 49, thereby driving the position of the floating roller body to be adjusted through the cooperation of the floating joint 48 and the slide seat. The output force of the low-friction cylinder 49 is controlled so that the floating roller body generates a constant tension on the label material roll 2. The floating roller body is located between the upper and lower floating roller position detection sensors 47 on the side of the frame 11. The two floating roller position detection sensors 47 detect The position of the floating roller body is measured, and then the feeding back is given to the unloading motor 19 to determine whether the unloading is started. This can effectively solve the problem in the prior art that the tension of the floating roller mechanism cannot be automatically and accurately controlled and adjusted, and the tension change of the material belt cannot be detected in real time to form a tension closed-loop control. The present invention can better adapt to the use of labels with higher tension requirements; it can effectively solve the problem that the existing unloading mechanism simply uses a magnetic powder brake for passive unloading, the magnetic powder brake has a slow response speed for passive unloading tension control, and the long-term power-on use of the magnetic powder brake is prone to poor braking effect, which greatly affects the control of the constant tension of the label material belt, thereby causing problems such as changes in the label position or wrinkles.

[0047] In the present invention, the number of the multiple pairs of opposing optical fibers 1 on the frame 11 is preferably 3 pairs. The present invention uses the floating roller position detection sensor 47 to detect the position of the floating roller body to feedback the signal and then control the unloading mechanism to start and stop unloading. The label material roll 2 on the unloading mechanism is divided into 4 speed intervals by 3 pairs of opposing optical fibers. The radius interval of the label material roll 2 is detected by the opposing optical fibers, and the unloading servo motor is controlled by the detection signal to actively adjust the unloading speed, thereby ensuring that the label material roll 2 can maintain a relatively constant speed of unloading as the radius continues to decrease, thereby reducing the constant tension of the label material belt during the transmission process. The label material tape is the material tape after the label material roll 2 is unfolded; the label material roll 2 on the unwinding mechanism is divided into 4 speed intervals by 3 pairs of opposing optical fibers. The working principle of adjusting the unwinding speed by controlling the unwinding servo motor through 3 pairs of opposing optical fibers is as follows: the 4 speed intervals divided by 3 pairs of opposing optical fibers are: V0, V1, V2 and V3; V0 is the unwinding speed when none of the 3 pairs of opposing optical fibers detects the material roll, and the unwinding work is stopped at this time because there is no material roll; V1 is the unwinding speed when one pair of opposing optical fibers detects the material roll, and at this time the pair of opposing optical fibers closest to the unwinding air shaft 3 can When the material roll is detected and its diameter is small, the unloading speed gradually increases, that is, the rotation speed of the unloading air shaft 3 gradually increases, thereby ensuring the unloading effect; V2 is the unloading speed when two pairs of opposing optical fibers detect the material roll. Since the two pairs of opposing optical fibers detect the material roll, the diameter of the material roll on the unloading air shaft 3 is greater than the diameter of the material roll on the unloading air shaft 3 at V1. The material tape unrolled is longer when the material roll rotates one circle. V2 is controlled to be less than V1, thereby ensuring smooth unloading; V3 is the unloading speed when all three pairs of opposing optical fibers detect the material roll. At this time, the diameter of the material roll on the unloading air shaft 3 is greater than V2. The diameter of the material roll on the pneumatic shaft 3 is such that the material tape is longer when the material roll rotates one circle, and V3 is controlled to be smaller than V2, so as to ensure smooth material unwinding; the speeds of V1, V2 and V3 are not fixed values, and a range can be set according to actual conditions. As the diameter of the material roll on the unwinding pneumatic shaft 3 gradually decreases, the speed of the unwinding pneumatic shaft 3 rotating and unwinding can be controlled to increase synchronously, so as to ensure the stability of the unwinding material tape; the above scheme describes a material unwinding speed control mechanism based on a counter-fiber, which is mainly used to automatically adjust the speed of the unwinding servo motor to ensure the stability and efficiency of the unwinding process;According to the detection results of 3 pairs of optical fibers, the speed of the unwinding servo motor is controlled to adjust the unwinding speed within different speed ranges. As the diameter of the material roll on the unwinding air shaft decreases, the unwinding speed gradually increases, thereby maintaining the stability of the unwinding tape. By dynamically adjusting the unwinding speed, the problem of unwinding instability caused by changes in the diameter of the material roll is avoided, ensuring the stability of the unwinding process. According to the changes in the diameter of the material roll, the unwinding speed is automatically adjusted to improve the unwinding efficiency and reduce the need for manual intervention. The settings of different speed ranges can be adjusted according to actual conditions. It has strong adaptability and can cope with rolls of different specifications and diameters. By accurately controlling the unwinding speed, the waste of material tape caused by unwinding too fast or too slow is reduced, and the production efficiency is improved. ;

[0048] The tension of the label material strip is applied by the gravity floating roller mechanism 20, and the tension detection roller around which the material strip is wound serves as tension feedback. The tension detection roller detects the tension of the material strip in real time. The tension detection roller is a tension sensor purchased on the market, which feeds back the detected signal to the controller. The controller adopts the ktc828a fully automatic tension controller purchased on the market. The controller automatically adjusts the air pressure of the low-friction cylinder 49 through its internal algorithm to achieve tension control, so that the tension of the label material strip remains relatively constant during the transmission process, thereby reducing the problem of label position change or wrinkles caused by excessive tension changes.

[0049] The stripping blade transmission mechanism 10 includes: a stripping blade base 10-1 slidably mounted on a linear guide rail of a frame 11, the stripping blade base 10-1 is threadedly connected to a ball screw 10-2, and the ball screw 10-2 is connected to the output end of a servo motor 10-3 mounted on the frame 11; two rubber-coated rollers 9 for squeezing out bubbles in the label are rotated at one end of the stripping blade base 10-1 close to a gravity floating roller mechanism 20, and the material tape of the label material roll 2 passes through the rolling area between the two rubber-coated rollers 9, and is wound around the stripping blade body 10-4 and the auxiliary roller 10-5 of the stripping blade base 10-1, and then is passed through a plurality of guide rollers 22 wound around the frame 11.

[0050] The structural design of the stripping knife transmission mechanism 10 enables it to withdraw and peel off the label when the label taking robot assembly adsorbs the label, and the stripping knife has a precise stripping distance. When working, the servo motor 10-3 starts to drive the ball screw 10-2 to rotate. When the ball screw 10-2 rotates, it changes its contact position with the stripping knife machine base 10-1, thereby controlling the stripping knife machine base 10-1 to slide on the linear guide rail of the frame 11, thereby driving the stripping knife body 10-4 on the stripping knife machine base 10-1 to withdraw, and cooperate with the label taking robot assembly to remove the label. The label robot assembly absorbs and removes the labels on the label material roll 2, and two relatively set rubber-coated rollers 9 are rotated at one end of the stripping knife base 10-1 close to the gravity floating roller mechanism 20. The two rubber-coated rollers 9 can squeeze the labels on the material strip passing through the inner rolling area thereof, thereby removing residual bubbles inside the labels, ensuring the label removal and subsequent labeling effects, and effectively solving the problem in the prior art that the stripping knife transmission mechanism 10 cannot remove the residual bubbles inside the labels, affecting the label removal and labeling effects.

[0051] The traction mechanism 7 includes: a traction roller 7-1 and a clamping roller assembly 7-2 which are rotated on the frame 11. A driven pulley 7-3 at one end of the traction roller 7-1 is connected to a driving pulley 24 of a traction motor 23 mounted on the frame 11 through a synchronous belt. The clamping roller assembly 7-2 includes: a clamping cylinder mounted on the frame 11. The output end of the clamping cylinder is connected to a roller frame slidably mounted on a horizontal guide rail of the frame 11. Two clamping rollers which are rotated on the roller frame are rollingly engaged with the side of the traction roller 7-1. The material belt of the label material roll 2 is pulled and guided by the peeling knife transmission mechanism 10 to the base paper rewinding mechanism 6 under the clamping cooperation of the traction roller 7-1 and the two clamping rollers.

[0052] The traction mechanism 7 is used to pull the label on the material belt to the peeling position for peeling. After the traction motor 23 is started, it can drive the driving pulley 24 to rotate. When the driving pulley 24 rotates, it drives the driven pulley 7-3 to rotate through the synchronous belt, thereby controlling the rotation of the traction roller 7-1. When the traction roller 7-1 rotates, it cooperates with the two clamping rollers in the clamping roller assembly 7-2 to clamp on both sides of the material belt, thereby realizing the traction movement of the material belt. The traction roller 7-1 is located between the two clamping rollers so that the two clamping rollers form a double clamping roller feeding effect, thereby improving the stability of the traction roller feeding. After the clamping cylinder is started, it can drive the roller frame to slide on the horizontal guide rail of the frame 11, thereby driving the distance between the two clamping rollers and the traction roller 7-1 to be adjusted to meet the use requirements of material belts of different thicknesses and ensure the traction effect.

[0053] The labeling structure for ultra-thin labels of lithium battery packs also includes: a dual laser sensor detection component, which includes: a sensor bracket 12 and two digital laser sensors 13 installed on the sensor bracket 12, the two digital laser sensors 13 are respectively a No. 1 laser sensor and a No. 2 laser sensor arranged at different positions of the stripping knife transmission mechanism 10, and the No. 1 laser sensor and the No. 2 laser sensor are arranged at different positions of the material belt of the stripping knife transmission mechanism 10; the No. 1 laser sensor sends a signal to the controller after detecting the label, and the controller controls the traction mechanism 7 to reduce the speed of traction of the material belt; the No. 2 laser sensor sends a signal to the controller after detecting the label, and the controller controls the traction mechanism 7 to stop traction of the material belt.

[0054] The setting of the dual laser sensor detection component can quickly pull when there is a missing label on the material roll, shorten the labeling cycle, and ensure the efficiency of labeling. The dual laser sensor detection component includes: a sensor bracket 12 and two digital laser sensors 13 installed on the sensor bracket 12. The two digital laser sensors 13 are specifically a No. 1 laser sensor and a No. 2 laser sensor. The No. 1 laser sensor and the No. 2 laser sensor are set at different positions toward the stripper transmission mechanism 10. The No. 1 laser sensor first detects the label to be removed, and the No. 2 laser sensor then detects the label to be removed. After detecting the label, the No. 1 laser sensor sends a signal to the controller, and the controller controls the traction mechanism 7 to reduce the speed of traction of the material belt, and controls the traction mechanism 7 to change from high-speed operation to reduced speed traction of the material belt, which can provide a precise stop preparation for the No. 2 laser sensor detection position. When the No. 2 laser sensor is detecting After the label is detected, a signal is sent to the controller, and the controller controls the traction mechanism 7 to stop traction of the material belt. This position is the label picking position. The feedback signal of the two digital laser sensors 13 is used to make the controller traction mechanism 7 slow down first and then stop, which can more accurately ensure that the position where the label on the material belt stops is not overshoot, improve the accuracy of the label picking position, and make the stripping knife transmission mechanism 10 and the label picking robot assembly cooperate with the accuracy of adsorbing the label higher, which is also conducive to improving the accuracy of the subsequent labeling position; the sensor bracket 12 can be connected to the frame 11, and the sensor bracket 12 can adopt a support structure purchased on the market that can be adjusted at multiple angles and positions, which is convenient for changing the position and angle of the two digital laser sensors 13 installed thereon, and thus can be compatible with various types of labels; the setting of the dual laser sensor detection component effectively solves the problems of label output beat, single mode and large limitations.

[0055] The label removal robot assembly includes: a four-axis robot 14, the output end of the four-axis robot 14 is connected to the robot end of the robot quick-change fixture 15, the tool end of the robot quick-change fixture 15 is connected to the silicone suction plate cavity assembly 16 for adsorbing labels on the material belt, and the silicone suction plate cavity assembly 16 is connected to the vacuum pump. The silicone suction plate cavity assembly 16 includes: a shell connected to the robot quick-change fixture 15, a soft silicone plate with multiple vacuum adsorption holes is connected to the bottom of the shell, and a vacuum adsorption cavity is formed between the soft silicone plate and the shell.

[0056] The four-axis robot 14 can be a multi-axis robot purchased on the market, which is convenient for controlling the robot quick-change fixture 15 and the silicone suction plate cavity assembly 16 to move at multiple angles and multiple positions. The silicone suction plate cavity assembly 16 is composed of a self-made vacuum cavity shell and a soft silicone plate. The vacuum holes on the soft silicone plate are arranged in a high-density and full-coverage manner according to the adsorption position of the lithium battery pack label to avoid the problem of collapse and deformation of the label due to the adsorption distance being too far. The setting of the robot quick-change fixture 15 is convenient for connecting or disassembling the silicone suction plate cavity assembly 16, and for replacing different silicone suction plate cavity assemblies 16 to meet the absorption requirements of different labels. The four-axis robot 14 is connected to the robot quick-change fixture 15 and the silicone suction plate cavity assembly 16 for operation, which can realize the label peeling and label removal. In the process of sucking and carrying the label, the label position can also be identified by the CCD camera, so as to perform CCD visual correction, and then the label is accurately attached to the surface of the lithium battery pack to improve the accuracy of labeling and labeling; it solves the problem that the existing robot end suction plate is cumbersome to change the type and the vacuum adsorption of the label is not reliable.

[0057] The barcode scanning component includes: a barcode scanning gun 17 for scanning the labels on the material strip and a barcode scanning angle position adjustment mechanism 18 for connecting and supporting the barcode scanning gun 17, and the barcode scanning angle position adjustment mechanism 18 is connected to the frame 11. The barcode scanning gun 17 is used to identify the labels on the material strip. The barcode scanning gun 17 can be compatible with a variety of barcodes and two-dimensional codes for long-distance scanning. The barcode scanning angle position adjustment mechanism 18 is used to support the barcode scanning gun 17. The barcode scanning gun 17 and the barcode scanning angle position adjustment mechanism 18 can both use equipment purchased on the market. The barcode scanning angle position adjustment mechanism 18 does not have too much structural design, and can be a support structure that allows the barcode scanning gun 17 to be adjusted at multiple angles and positions. The barcode scanning angle position adjustment mechanism 18 can also be a fixed support rod to play a supporting effect.

[0058] The bottom paper rewinding mechanism 6 includes a rewinding shaft 6-1 rotated on the frame 11, a driven pulley 6-2 at one end of the rewinding shaft 6-1 is connected to a driving pulley 24 of a traction motor 23 through a synchronous belt 2, and a slotted sleeve 21 for winding the bottom paper waste roll 5 is expanded on the winding air shaft 6-3 at the other end of the rewinding shaft 6-1.

[0059] When the driving pulley 24 of the traction motor 23 rotates, it can also drive the driven pulley 2 6-2 to rotate through the synchronous belt 2, thereby controlling the rewinding shaft 6-1 to drive the winding air shaft 6-3 to rotate. When the winding air shaft 6-3 rotates, it drives the slotted sleeve 21 to rotate, and the bottom paper of the material belt is rolled into a bottom paper waste roll 5 through the slotted sleeve 21. The slotted sleeve 21 cooperates with the winding air shaft 6-3 to realize the function of quickly loading and unloading the bottom paper waste roll 5. The installation is convenient. When taking out the bottom paper waste roll 5, you only need to close the winding air shaft 6-3 to easily take out the entire roll. The winding air shaft 6-3 can use a conventional air shaft purchased on the market. The design of the bottom paper rewinding mechanism 6 can solve the problems of bottom paper clamping and bottom paper waste roll unloading that are difficult to operate.

[0060] The robot quick-change fixture 15 includes: a robot connection part for connecting with the four-axis robot 14 and a tool connection part for connecting with the silicone suction plate cavity assembly 16, the robot connection part includes: a first flange 25, the first flange 25 is fixedly connected with a plurality of curved connecting rods 27 uniformly surrounding and fixedly arranged on the connecting tube 26, an annular slot is provided on the lower end surface of the connecting tube 26, one end of a tensioning spring 28 is fixed on the top surface of the inner part of the annular slot, and the other end of the tensioning spring 28 is connected with a contact pressure ring 29 slidably arranged in the annular slot; the upper end of the inner side of the connecting tube 26 is connected to the top of the hexagonal tube 30 through the connecting frame, and the bottom of the hexagonal tube 30 is provided with an end cover 31;

[0061] The tool connection part includes: an annular insert 32 slidably arranged in the annular slot of the receiving tube 26, the bottom of the annular insert 32 is fixed on the second flange 33, the center hole of the second flange 33 is fixedly connected to the plug column 34, the top of the plug column 34 is slidably arranged in the center hole of the end cover 31 at the bottom of the hexagonal tube 30, and a vertical support rod 35 is fixed in the hollow chamber of the plug column 34. The side of the vertical support rod 35 is evenly surrounded and fixed with multiple inner ends of compression springs 36, and the outer ends of the multiple compression springs 36 are connected to the inner ends of multiple locking blocks 37. The middle parts of the multiple locking blocks 37 are slidably arranged in multiple transverse through holes on the side wall of the plug column 34, and the upper parts of the outer ends of the multiple locking blocks 37 are provided with a top pressing inclined surface inclined from the inside to the outside, and the bottoms of the multiple locking blocks 37 are The plane is snap-fitted on the upper surface of the bottom end cover 31 of the hexagonal tube 30; the bottom of the hexagonal tube 30 is inserted into the hexagonal guide groove of the guide piece 38 on the upper surface of the second flange 33; the inside of the hexagonal tube 30 is slidably connected to the unlocking plug 39, and the lower end of the unlocking plug 39 is slidably arranged on the outer surface of the plug-in column 34, and is arranged relative to the top pressure inclined surfaces of multiple locking blocks 37, and a reset compression spring 41 is fixed between the unlocking pressure ring 40 fixed at the upper end of the unlocking plug 39 and the mounting frame; an arc-shaped support 42 is fixed on the upper surface of the mounting tube 26, and the arc-shaped support 42 is slidably matched to be snap-fitted on the lower surface of the unlocking pressure ring 40 to prevent accidental touch, and an unlocking pull spring 45 is fixed between the unlocking pull block 44 at the outer end of the anti-accidental touch lever 43 and the arc-shaped support 42.

[0062] The robot quick-change fixture 15 in the present invention includes a robot connection part for connecting to the four-axis robot 14 and a tool connection part for connecting to the silicone suction plate cavity assembly 16. A quick-release structure is adopted between the robot connection part and the tool connection part. During installation, the annular insert tube 32 is controlled to be inserted into the annular slot of the connecting tube 26, and the contact pressure ring 29 is driven to slide to compress the tensioning spring 28, so that the plug-in column 34 is inserted into the central hole of the end cover 31 at the bottom of the hexagonal tube 30. During insertion, the top pressure inclined surfaces above the outer ends of the multiple locking blocks 37 contact the bottom end cover 31, thereby generating inward pressure on the top pressure inclined surfaces of the multiple locking blocks 37, so that the multiple locking blocks 37 slide into the hollow cavity of the plug-in column 34 and compress the multiple compression springs 36. When the multiple locking blocks 37 enter the inside of the hexagonal tube 30, the multiple locking blocks 37 are in the multiple compression springs 3 The locking chuck 37 is then released from the locking chuck 39 and released from the locking chuck 39. The locking chuck 37 is released from the locking chuck 39 and released from the locking chuck 39. The locking chuck 37 is then released from the locking chuck 39 and released from the locking chuck 39.

[0063] The control system is applied to the labeling structure for the ultra-thin label of lithium battery pack.

[0064] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0065] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. The labeling structure for ultra-thin labels of lithium battery packs is characterized by: include: Retractable feeder assembly, barcode scanning assembly and label removal robot assembly; The rear-retractable feeder assembly comprises: a feeding mechanism for installing a label material roll (2) and feeding the label material roll (2); a movable end material belt of the label material roll (2) sequentially passes through a gravity floating roller mechanism (20), a tension sensor mechanism (4), a belt pressing mechanism (46), a peeling knife transmission mechanism (10) and a traction mechanism (7) installed on a frame (11), and is connected to a bottom paper rewinding mechanism (6) for rewinding the bottom paper of the label material roll (2) into a bottom paper waste roll (5); a code scanning assembly for scanning the labels on the material belt of the label material roll (2) fed out by the feeding mechanism; and a label taking robot assembly for cooperating with the peeling knife transmission mechanism (10) to take the labels off the material belt; The label removal robot assembly comprises: a robot quick-change fixture (15), the robot quick-change fixture (15) comprises: a robot connection part for connecting to a four-axis robot and a tool connection part for connecting to a silicone suction plate cavity assembly, the robot connection part comprises: a first flange, the first flange is fixedly connected to a plurality of curved connecting rods uniformly surrounding and fixedly arranged on a connecting tube, an annular slot is provided on the lower end surface of the connecting tube, one end of a tensioning spring is fixed on the top surface of the inner part of the annular slot, and the other end of the tensioning spring is connected to a contact pressure ring slidably arranged in the annular slot; the upper end of the inner side of the connecting tube is connected to the top of the hexagonal tube through the connecting frame, and an end cover is provided at the bottom of the hexagonal tube; The tool connection part includes: an annular insert tube slidably arranged in the annular slot of the connecting tube, the bottom of the annular insert tube is fixed on the second flange, the center hole of the second flange is fixedly connected to the plug-in column, the top of the plug-in column is slidably arranged in the center hole of the end cover at the bottom of the hexagonal tube, and a vertical support rod is fixed in the hollow chamber of the plug-in column. The side of the vertical support rod is evenly surrounded and fixed with multiple inner ends of compression springs, and the outer ends of the multiple compression springs are connected to the inner ends of multiple locking blocks. The middle parts of the multiple locking blocks are slidably arranged in multiple transverse through holes on the side wall of the plug-in column, and the upper parts of the outer ends of the multiple locking blocks are provided with a top pressing inclined surface inclined from the inside to the outside. The flat surface at the bottom is snap-fitted into the upper surface of the bottom end cover of the hexagonal tube; the bottom of the hexagonal tube is inserted into the hexagonal guide groove of the guide piece on the upper surface of the second flange; the inside of the hexagonal tube is slidably connected to the unlocking plug, and the lower end of the unlocking plug is slidably arranged on the outer surface of the plug-in column, and is arranged relative to the top pressure inclined surfaces of multiple locking blocks, and a reset compression spring is fixed between the unlocking pressure ring fixed at the upper end of the unlocking plug and the mounting frame; an arc-shaped support is fixedly connected to the upper surface of the mounting tube, and the arc-shaped support is slidably matched with the anti-accidental touch barrier rod that is snap-fitted to the lower surface of the unlocking pressure ring, and an unlocking tension spring is fixed between the unlocking pull block at the outer end of the anti-accidental touch barrier rod and the arc-shaped support.

2. The labeling structure for ultra-thin labels of lithium battery packs according to claim 1, characterized in that: The unloading mechanism comprises: an unloading motor (19) mounted on a frame (11); a pulley of an output shaft of the unloading motor (19) is connected to a pulley fixed on an unloading air shaft (3) through a synchronous belt drive; and the unloading air shaft (3) rotatably mounted on the frame (11) is used to install a label material roll (2).

3. The labeling structure for ultra-thin labels of lithium battery packs according to claim 1, characterized in that: Also includes: A plurality of pairs of opposing optical fibers (1) are mounted on a frame (11), and a label material roll (2) on a material unwinding mechanism is located between the plurality of pairs of opposing optical fibers (1). The plurality of pairs of opposing optical fibers (1) are arranged in sequence from a direction close to the axis of the label material roll (2) to a direction away from the axis of the label material roll (2), so that the plurality of pairs of opposing optical fibers (1) can be used to detect radial intervals at different positions of the label material roll (2).

4. The labeling structure for ultra-thin labels of lithium battery packs according to claim 1, characterized in that: The gravity floating roller mechanism (20) comprises: a floating roller body, one end of which is rotatably connected to a slide seat slidably mounted on a longitudinal guide rail of a frame (11), and the slide seat is connected to an output end of a low-friction cylinder (49) mounted on the frame (11) via a floating joint (48); a tension sensor mechanism (4) comprises: a tension detection roller and a floating roller position detection sensor (47) mounted on the frame (11); the floating roller body is located between a fixed guide roller (8) rotatably mounted on the frame (11) and the tension detection roller; the material strip of the labeling material roll (2) is sequentially wound around the fixed guide roller (8), the floating roller body and the tension detection roller; the floating roller body is located between two upper and lower floating roller position detection sensors (47) on the side of the frame (11), and the position of the floating roller body is detected by the two floating roller position detection sensors (47).

5. The labeling structure for ultra-thin labels of lithium battery packs according to claim 1, characterized in that: The stripping blade transmission mechanism (10) comprises: a stripping blade machine base (10-1) slidably mounted on a linear guide rail of a frame (11); the stripping blade machine base (10-1) is threadedly connected to a ball screw (10-2); the ball screw (10-2) is connected to the output end of a servo motor (10-3) mounted on the frame (11); two rubber-coated rollers (9) for squeezing out bubbles in the label are rotated at one end of the stripping blade machine base (10-1) close to the gravity floating roller mechanism (20); the material strip of the label material roll (2) passes through a rolling area between the two rubber-coated rollers (9), is wound around a stripping blade body (10-4) and an auxiliary roller (10-5) of the stripping blade machine base (10-1), and then is wound around a plurality of guide rollers (22) on the frame (11).

6. The labeling structure for ultra-thin labels of lithium battery packs according to claim 1, characterized in that: The traction mechanism (7) comprises: a traction roller (7-1) and a clamping roller assembly (7-2) which are rotatably mounted on a frame (11); a driven pulley (7-3) at one end of the traction roller (7-1) is connected to a driving pulley (24) of a traction motor (23) mounted on the frame (11) via a synchronous belt; the clamping roller assembly (7-2) comprises: a clamping cylinder mounted on the frame (11); an output end of the clamping cylinder is connected to a roller frame slidably mounted on a horizontal guide rail of the frame (11); two clamping rollers rotatably mounted on the roller frame are rollingly engaged with the side of the traction roller (7-1); and the material belt of the label material roll (2) is traction-guided by the stripping knife transmission mechanism (10) to the base paper rewinding mechanism (6) under the clamping cooperation of the traction roller (7-1) and the two clamping rollers.

7. The labeling structure for ultra-thin labels of lithium battery packs according to claim 1, characterized in that: Also includes: The dual laser sensor detection component comprises: a sensor bracket (12) and two digital laser sensors (13) mounted on the sensor bracket (12), the two digital laser sensors (13) being respectively a No. 1 laser sensor and a No. 2 laser sensor arranged at different positions facing the stripping knife transmission mechanism (10); the No. 1 laser sensor sends a signal to a controller after detecting a label, and the controller controls the traction mechanism (7) to reduce the speed of traction of the material belt; the No. 2 laser sensor sends a signal to the controller after detecting the label, and the controller controls the traction mechanism (7) to stop traction of the material belt.

8. The labeling structure for ultra-thin labels of lithium battery packs according to claim 1, characterized in that: The label removal robot assembly further comprises: a four-axis robot (14); an output end of the four-axis robot (14) is connected to a robot end of a robot quick-change fixture (15); a tool end of the robot quick-change fixture (15) is connected to a silicone suction plate cavity assembly (16) for adsorbing labels on a material strip; and the silicone suction plate cavity assembly (16) is connected to a vacuum pump.

9. The labeling structure for ultra-thin labels of lithium battery packs according to claim 8, characterized in that: The silicone suction plate cavity assembly (16) comprises: a shell connected to the robot quick-change fixture (15); a soft silicone plate with a plurality of vacuum suction holes is connected to the bottom of the shell; a vacuum suction cavity is formed between the soft silicone plate and the shell.

10. A control system, characterized in that A labeling structure for an ultra-thin label for a lithium battery pack as described in any one of claims 1 to 9.

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