A method and control system for threading a coater, and a storage medium

Abstract

The present invention relates to the technical field of battery coating, and discloses a method and a control system for controlling tape threading of a coater, as well as a storage medium. The control method includes: during the tape threading process, after completing the tape threading operation at each current control node, first press the tape against a pressure roller at the current control node to enable the tape to reach a preset tight state with the current control node, and then control the unwind reel and all the current control nodes where the tape threading operation has been completed to feed the tape forward synchronously until the feeding stops after reaching the next control node, so as to perform the tape threading operation at the next control node. The present invention can not only ensure that the risk of tape breakage does not increase with the increase of the tape threading distance, reducing the risk of tape breakage, but also, since the tension degree of the tape is simply controllable, only the tension state of the tape in the current tape threading section needs to be considered during the tape threading process, without taking into account the tape states in other previous sections, and the degree of automation is high. Therefore, the tape threading speed can be effectively increased and the operation cost can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of battery coating, and particularly to a method and a control system for controlling the threading of a coater, as well as a storage medium. Background Art

[0002] In the current coater threading technology, when threading from the unwind to the rewind, usually the base material is fed from the unwind, and manual operation is required to continuously unwind the tape at the unwind; in addition, someone is arranged to pull the tape through the roller to reach the main roller on the A side, and at this time, someone is required to perform the feeding operation of the main roller on the A side at the main roller on the A side; then it is threaded to the lower oven, and after passing through the lower oven, it is threaded to the A side traction, and at this time, someone is required to perform the feeding operation at the A side traction. Then it is threaded to the main roller on the B side, the traction roller on the B side, and the rewinding shaft in sequence. During this process, someone is required to monitor the feeding situation of the base material at each main roller and traction roller, and always pay attention to the tension degree of the base material tape in each interval to prevent the pulling force on the base material tape from reaching the limit and causing the tape to break.

[0003] Obviously, this threading method not only requires a large number of personnel and is relatively cumbersome in operation, resulting in a large investment in personnel and materials, high production costs, and low production efficiency, but also the staff cannot always accurately control the base material tapes in all intervals to maintain a basically constant tension degree, and has a high probability of tape breakage. Summary of the Invention

[0004] The purpose of the present invention is to provide a method and a control system for controlling the threading of a coater, as well as a storage medium, so as to overcome the defects of high production costs, low production efficiency, and high probability of tape breakage existing in the traditional manual threading method.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] A method for quickly controlling the threading of a coater is used to realize the threading operation starting from the unwind and ending at the rewind and sequentially passing through multiple control nodes. The multiple control nodes include main rollers, traction rollers, and / or ovens; the control method includes:

[0007] During the threading process, after each threading operation at the current control node is completed, first press the tape against the current control node through a pressure roller to make the tape reach a preset close state with the current control node, and then control the unwind and all the control nodes that have completed the threading operation to feed forward synchronously until the feeding is paused after reaching the next control node for threading operation at the next control node.

[0008] Optionally, the control method further includes:

[0009] When a tape break occurs, determine the two closest control nodes on both sides of the tape break position, and denote them as the pre-tape-break node and the post-tape-break node respectively according to the tape threading operation sequence;

[0010] Control the post-tape-break node and all the completed tape-threaded control nodes after it to pause the material feeding, and control the pre-tape-break node, all the control nodes before it, and the unwind reel to synchronously feed forward as a whole until the tape is joined at the tape break position;

[0011] After the tape is joined at the tape break position, control the unwind reel and all the completed tape-threaded control nodes to synchronously feed forward as a whole.

[0012] Optionally, floating rollers are respectively provided between two adjacent control nodes;

[0013] The control method further includes: respectively taking the corresponding floating roller as a reference for the running speeds of the unwind reel and each control node, and performing PID increment and decrement adjustment.

[0014] Optionally, deviation correction sensors are respectively provided between two adjacent control nodes;

[0015] The control method further includes: during the tape threading process, controlling the tape to be in the middle position according to the deviation correction sensors.

[0016] A rapid tape threading control system for a coater, comprising: a controller, an unwind reel, a take-up reel, and a plurality of control nodes successively located between the unwind reel and the take-up reel, wherein the plurality of control nodes include main rollers, traction rollers, and / or ovens;

[0017] The controller is specifically configured to: during the tape threading process, after each current control node's tape threading operation is completed, first press the tape against the current control node through a pressure roller so that the tape reaches a preset close state with the current control node, and then control the unwind reel and all the currently completed tape-threaded control nodes to synchronously feed forward as a whole until the feeding stops after reaching the next control node for the tape threading operation at the next control node.

[0018] Optionally, the controller is further configured to:

[0019] When a tape break occurs, control the post-tape-break node and all the completed tape-threaded control nodes after it to stop feeding forward, and control the pre-tape-break node, all the control nodes before it, and the unwind reel to synchronously feed forward as a whole until the tape is joined at the tape break position; after the tape is joined at the tape break position, control the unwind reel and all the completed tape-threaded control nodes to synchronously feed forward as a whole;

[0020] Wherein, the pre-tape-break node and the post-tape-break node are the two closest control nodes on both sides of the tape break position.

[0021] Optionally, floating rollers are respectively provided between two adjacent control nodes along the tape threading direction;

[0022] The controller is further configured to: respectively perform PID increment and decrement adjustment for the unwinding reel and each control node with their respective corresponding floating rollers as references.

[0023] Optionally, deviation correction sensors are respectively provided between two adjacent control nodes along the tape threading direction;

[0024] The controller is further configured to: during the tape threading process, control the tape to be in the middle position according to the deviation correction sensors.

[0025] Optionally, the multiple control nodes specifically include a first main roller, a first oven, a first traction roller, a second main roller, a second oven, and a second traction roller arranged in sequence along the tape threading direction.

[0026] A storage medium stores at least one instruction, and the instruction is loaded and executed by a processor to implement the operations performed by the rapid tape threading control method of the coater as described in any one of the above.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0028] In the embodiment of the present invention, the entire tape threading stroke is divided into multiple intervals according to operation nodes, and a pressure roller with the function of pressing the tape is provided at the junction position between two adjacent intervals. The pressure roller can make the tapes in different intervals be in a relatively independent tension control state with respect to each other. This state depends to a large extent on the influencing factors within this interval and to a small extent on the influencing factors of other intervals. Therefore, the present invention can not only ensure that the risk of tape breakage does not increase with the increase of the tape threading stroke, greatly improving the tape threading quality, but also because the tension degree of the tape is simply controllable. During the tape threading process, only the tension state of the tape in the current tape threading interval needs to be considered, without taking into account the tape states of other previous intervals, and the degree of automation is high. Therefore, it can effectively improve the tape threading operation speed and reduce the tape threading operation cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0030] Figure 1 It is a structural diagram of the rapid tape threading control system of the coater provided by the embodiment of the present invention.

[0031] Figure 2Schematic diagram of the control interface of the rapid threading control system for the coater provided by the embodiment of the present invention.

[0032] Explanation of reference numerals:

[0033] 1 represents the unwind reel, 2 represents the main roller of side A, 3 represents the servo for threading through the oven of side A, 4 represents the traction roller of side A, 5 represents the main roller of side B, 6 represents the servo for oven of side B, 7 represents the traction roller of side B, 8 represents the take-up traction roller, and 9 represents the take-up reel;

[0034] 10 represents the floating roller from the unwind reel to the main roller of side A, 11 represents the floating roller from the main roller of side A to the traction roller of side A, 12 represents the floating roller from the traction roller of side A to the main roller of side B, 13 represents the floating roller from the main roller of side B to the traction roller of side B, 14 represents the floating roller from the traction roller of side B to the take-up traction, and 15 represents the floating roller from the take-up traction roller to the take-up reel;

[0035] 16 represents the pressure roller at the main roller of side A, 17 represents the pressure roller at the traction roller of side A, 18 represents the pressure roller at the main roller of side B, 19 represents the pressure roller at the traction roller of side B, and 20 represents the pressure roller at the take-up traction roller;

[0036] 21 represents the deviation correction mechanism between the unwind reel and the main roller of side A, 22 represents the deviation correction mechanism between the main roller of side A and the traction roller of side A, 23 represents the deviation correction mechanism between the traction roller of side A and the main roller of side B, 24 represents the deviation correction mechanism between the main roller of side B and the traction roller of side B, and 25 represents the deviation correction mechanism between the traction roller of side B and the take-up traction roller. Detailed implementation manners

[0037] In order to make the invention object, features, and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the embodiments described below are only a 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 those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0038] The embodiment of the present invention provides a rapid threading control method for a coater, which is used to realize the threading operation starting from the unwind reel, ending at the take-up reel, and sequentially passing through multiple control nodes. The multiple control nodes include main rollers, traction rollers, and / or ovens; the control method includes:

[0039] During the threading process, after completing the threading operation at the current control node each time, first press the material tape at the current control node through a pressure roller so that the material tape reaches a preset close state with the current control node, and then control the unwinding reel and all the control nodes that have completed the threading operation to feed forward synchronously as a whole until the feeding is paused after reaching the next control node for the threading operation at the next control node.

[0040] In the threading control method provided by the embodiment of the present invention, each main roller, traction roller, and / or oven during the threading process is used as a control node. After completing the threading operation at the current control node each time, the pressure roller is used to make the material tape reach a preset close state with the current control node. In this way, the entire threading stroke is divided into multiple intervals according to the operation nodes, and a pressure roller with the function of pressing the material tape is provided at the boundary position between two adjacent intervals. The pressure roller can make the material tape segments in different intervals be in a relatively independent tension control state. This state depends to a large extent on the influencing factors within this interval (such as the length and weight of the material tape segments within this interval) and to a small extent on the influencing factors of other intervals. Therefore, the present invention can not only ensure that the risk of tape breakage of the material tape does not increase with the increase of the threading stroke, greatly improving the threading quality, but also because the tension degree of the material tape is simply controllable (during the threading process, only the tension state of the material tape in the current threading interval needs to be considered, without considering the state of the material tape in other previous intervals), and the automation degree is high, so it can effectively improve the threading operation speed and reduce the threading operation cost.

[0041] Further, the control method further includes: when a tape break occurs, determining the two closest control nodes on both sides of the tape break position and respectively recording them as the pre-tape-break node and the post-tape-break node according to the threading operation sequence; controlling the post-tape-break node and all the control nodes that have completed threading after it to pause feeding, and controlling the pre-tape-break node and all the control nodes before it and the unwinding reel to feed forward synchronously as a whole until the material tape is joined at the tape break position; after the material tape is joined at the tape break position, controlling the unwinding reel and all the control nodes that have completed threading to feed forward synchronously as a whole.

[0042] The conventional tape break handling method is: after a tape break occurs, all the main rollers, traction rollers, and / or ovens stop feeding forward, only the unwinding reel continues to feed, and an operator pulls the material tape at the tape break position until the material tape is joined at the tape break position. During this process, it is necessary for the operator to pay attention to the state of the entire material tape between the feeding shaft and the tape break position in real time to avoid re-breakage during the pulling process. This not only has low efficiency but also is difficult.

[0043] Compared with the conventional method, after the tape breaks in the embodiments of the present invention, it is only necessary to control the feeding shaft and the control nodes before the tape break position to continue feeding forward a certain length (referring to the length that needs to be re-joined at the break position) in the initial manner. Without manual monitoring and operation, the tape can be quickly joined at the break position, and it is ensured that the tape before the break position is always in a good tensioned state as set.

[0044] In addition, a floating roller and a deviation correction sensor are respectively arranged between two adjacent control nodes. Based on this, the control method provided by the embodiments of the present invention may further include: for the running speeds of the feeding reel and each control node, respectively taking the corresponding floating roller as a reference, performing PID increment and decrement adjustment; during the tape threading process, controlling the tape to be in the middle position according to the deviation correction sensor.

[0045] Based on the above control method, the embodiments of the present invention further provide a rapid tape threading control system for a coating machine, including: a controller, a feeding reel, a winding reel, and a plurality of control nodes sequentially located between the feeding reel and the winding reel, and the plurality of control nodes include a main roller, a traction roller, and / or an oven;

[0046] The controller is specifically configured to: during the tape threading process, after completing the tape threading operation of the current control node each time, first press the tape at the current control node through a pressure roller so that the tape reaches a preset close state with the current control node, and then control the feeding reel and all the control nodes that have completed the tape threading operation currently to feed forward synchronously as a whole until the feeding stops after reaching the next control node for the tape threading operation at the next control node.

[0047] It should be noted that in the embodiments of the present invention, a main roller, a traction roller, and / or an oven are collectively referred to as control nodes. In practical applications, the type, quantity, and distribution position in the tape threading direction of the control nodes can be specifically adjusted according to the actual situation, and the embodiments of the present invention do not make specific limitations thereto.

[0048] In an optional implementation manner, please refer to Figure 1 , the rapid tape threading control system for a coating machine includes: a feeding reel 1, an A-side main roller 2, an A-side oven, an A-side traction roller 4, a B-side main roller 5, a B-side oven, a B-side traction roller 7, a winding traction roller 8, and a winding reel 9 arranged in sequence along the tape threading path.

[0049] Among them, a floating roller 10 is arranged between the feeding reel 1 and the A-side main roller 2, a floating roller 11 is arranged between the A-side main roller 2 and the A-side traction roller 4, a floating roller 12 is arranged between the A-side traction roller 4 and the B-side main roller 5, a floating roller 13 is arranged between the B-side main roller 5 and the B-side traction roller 7, a floating roller 14 is arranged between the B-side traction roller 7 and the winding traction roller 8, and a floating roller 15 is arranged between the winding traction roller 8 and the winding reel 9.

[0050] There is a pressure roller 16 at the A-side main roller 2, a pressure roller 17 at the A-side traction roller 4, a pressure roller 18 at the B-side main roller 5, a pressure roller 19 at the B-side traction roller 7, and a pressure roller 20 at the winding traction roller 8.

[0051] There is an alignment mechanism 21 between the unwind reel 1 and the A-side main roller 2, an alignment mechanism 22 between the A-side main roller 2 and the A-side traction roller 4, an alignment mechanism 23 between the A-side traction roller 4 and the B-side main roller 5, an alignment mechanism 24 between the B-side main roller 5 and the B-side traction roller 7, and an alignment mechanism 25 between the B-side traction roller 7 and the winding traction roller 8.

[0052] Next, taking Figure 1 the shown coating machine rapid threading control system as an example, the PID incremental adjustment method of the unwind reel 1 and each control node will be described in detail.

[0053] In the coating system, the diameter of the unwind reel 1 changes in real time during movement. We use ultrasonic and laser distance sensors to vertically irradiate the reel to detect the distance of the base material reel. The distance is converted into a 4-20 mA current signal. The corresponding current input analog module of the PLC converts the 4-20 mA current signal into an analog value inside the PLC. Here, we select a current input analog module with a resolution of 3000. The detection range of the ultrasonic wave is 65 - 600 mm. It can be seen that the detected feedback distance of the ultrasonic wave of 65 - 600 mm corresponds to the current signal of 4-20 mA, corresponding to the PLC analog value of 0 - 3000. The PLC analog value corresponding to each 1 mm is defined as L1, then L1 = 3000 / (600 - 65); which is 5.607. However, in reality, the reel of the unwind reel 1 will not be exactly 600 mm away from the sensor. Therefore, we should have a definition of the initial calibrated reel diameter for the unwind reel 1. We define it as the initial calibrated reel diameter base_Rollingdiameter, which is manually judged and identified. The initial calibrated reel diameter is defined by the diameter of the reel when the reel is first loaded. During calibration, the analog value Rollingdiameter_AD obtained by the current PLC is matched with the initial calibrated reel diameter base-_Rollingdiameter; the minimum value of the ultrasonic range is defined as L_minimum, and the maximum value is defined as L_maximal; then the distance reference value (the distance from the center of the reel to the sensor) under the current calibrated reel diameter should be Rollingdiameter_standard = base_Rollingdiameter / 2 + (L_minimum + (L_maximal - L_minimum) * Rollingdiameter_AD / 30000);

[0054] Therefore, the current diameter of the unwind reel 1 is

[0055] Rollingdiameter = 2 * (Rollingdiameter_standard - (L_minimum + (L_maximal - L_minimum) * Rollingdiameter_AD / 30000));

[0056] In this design, the axis movement is speed motion control: the set speed is the linear speed, with the unit of m / min, defined as linear_velocity; while the actual command of the axis during operation is the angular velocity, with the unit of ° / s. Here, a speed conversion is required, and the angular velocity is defined as angular_velocity. Then the unwinding angular velocity:

[0057] angular_velocity = (360.0 * linear_velocity / π) / Rollingdiameter.

[0058] The formula for the PID increment adjustment of the unwinding reel 1 speed according to the floating roller is as follows:

[0059] △U = Kp * e(k - 1) + Ki * e(k) + Kd * (e(k) - 2e(k - 1) + e(k - 2))

[0060] △U represents the adjustment amount for each PID adjustment;

[0061] Kp represents the proportional coefficient;

[0062] Ki represents the integral coefficient;

[0063] Kd represents the differential coefficient;

[0064] e(k) represents the error value between the target and the actual value of the floating roller this time;

[0065] e(k - 1) represents the error value between the target and the actual value of the floating roller in the previous time;

[0066] e(k - 2) represents the error value between the target and the actual value of the floating roller in the time before the previous time;

[0067] Since the faster the linear speed of the unwinding reel 1, the smaller the value of the floating roller, and the looser the base material between the unwinding reel 1 and the main roller 2 of surface A, the linear speed of the unwinding reel 1 is inversely proportional to the PID adjustment increment value, and the speed output each time

[0068] linear_velocity(k) = linear_velocity(k - 1) - △U;

[0069] linear_velocity(k) represents the speed output this time;

[0070] linear_velocity(k - 1) represents the previous velocity output;

[0071] When passing through the oven from the head and automatically threading the tape through the oven, the reference for the PID adjustment of the A - side oven threading servo 3 is the servo torque. The actual value of the servo torque is compared with the target value: then

[0072] △U = Kp * e(k - 1)+Ki * e(k)+Kd * (e(k)-2e(k - 1)+e(k - 2))

[0073] e(k) represents the error value between the target and the actual value of the servo torque this time;

[0074] e(k - 1) represents the error value between the target and the actual value of the servo torque last time;

[0075] e(k - 2) represents the error value between the target and the actual value of the servo torque the time before last;

[0076] Here, the speed is directly proportional to the incremental value of the PID. Therefore, the speed output of the A - side oven threading servo 3 is

[0077] linear_velocity(k)=linear_velocity(k - 1)+△U;

[0078] After the tape reaches the A - side traction, the A - side traction speed is adjusted by PID with the floating roller 11 as the reference for positive incremental adjustment. And so on, the speed of the B - side main roller 5 is adjusted by PID with the floating roller 12 as the reference, the speed of the B - side traction roller 7 is adjusted by PID with the floating roller 13 as the reference, the speed of the winding traction is adjusted by PID with the floating roller 14 as the reference, and the speed of the winding shaft 9 is adjusted by PID with the floating roller 15 as the reference. The PID adjustment is a positive adjustment:

[0079] linear_velocity(k)=linear_velocity(k - 1)+△U;

[0080] In △U:

[0081] e(k) represents the error value between the target and the actual value of the corresponding area floating roller this time;

[0082] e(k - 1) represents the error value between the target and the actual value of the corresponding area floating roller last time;

[0083] e(k - 2) represents the error value between the target and the actual value of the corresponding area floating roller the time before last;

[0084] There is an electro-hydraulic proportional valve at each floating roller. A certain analog quantity is set in the PLC control system, and the corresponding force is output to push the floating roller. We set the tension as Y, the analog quantity output resolution as Z, and the maximum tension of the corresponding floating roller as X. Then the PLC outputs the analog quantity W = Y * (Z / X);

[0085] Y can be set on the touch screen according to the force on the floating rollers in each area. Z is determined by the output module of the PLC analog quantity, and X is determined by the tension sensor on the floating roller.

[0086] In addition, there are deviation correction sensors in each area to ensure that the base material is in the middle position during threading in each area, preventing the base material from running off and causing secondary breakage of the base material.

[0087] Please refer to Figure 2 , and the following will continue to take the fast threading control system of the coater shown in Figure 1 as an example to describe its control operation process in detail:

[0088] Step 1: Select the threading mode through the PLC touch screen to distinguish it from the normal mode; select the threading button of unwind reel 1, click the threading start button, and the PLC controls unwind reel 1 to start unwinding the base material forward. The operator threads the base material through the guide rollers and after floating roller 10 in sequence, and then reaches the A-side main roller 2. Then, close the threading start button, and press the corresponding pressure roller 16 of the A-side main roller 2 to make the base material between unwind reel 1 and the A-side main roller 2 closely adhere to the A-side main roller 2. By selecting the A-side main roller button and the unwind reel button, the area between unwind reel 1 and the A-side main roller 2 is divided into a whole.

[0089] Step 2: Based on Step 1, click the threading start button. The unwind reel 1 and the A-side main roller 2 are moved forward as a whole to feed the material. The substrate between the unwind reel 1 and the A-side main roller 2 is tensioned by the floating roller 10. The deviation of the substrate is adjusted by the deviation rectifying mechanism 21 to ensure that the substrate is in the middle position of the roller. The speed is based on a fixed speed S. The speed increase or decrease of the A-side main roller 2 is adjusted by performing a PID algorithm on the actual position and the target position of the floating roller 10. When the substrate reaches the A-side oven chamber, close the threading start button, fix the substrate on the oven threading chain. The oven threading chain is driven by a servo driver, and the oven servo driver feeds back the torque to the PLC. During the oven threading process, manually control the oven threading servo through the touch screen, set a torque target value, and give the driver a reference speed. When the torque is about to reach the torque target value, the driver speed gradually decreases to prevent the substrate from being broken due to excessive force. At the same time, manual intervention can also be used to judge whether to stop the operation of the oven threading servo. When reaching the oven outlet, close the threading start button, remove the substrate from the oven chain, turn on the threading start button, bypass the substrate around the floating roller 11, and then pull it to the A-side traction roller 4, and press the pressure roller 17 at the A-side traction roller 4 against the substrate. Select the A-side traction button to divide the area between the unwind reel 1 and the A-side traction roller 4 into a whole.

[0090] Step 3: Based on Step 2, click the threading start button. The unwind reel 1 and the A-side traction roller 4 are moved forward as a whole to feed the material. The substrate between the A-side main roller 2 and the A-side traction roller 4 is tensioned by the floating roller 11. The deviation of the substrate is adjusted by the deviation rectifying mechanism 22 to ensure that the substrate is in the middle position of the roller. The speed is based on a fixed speed S. The speed increase or decrease of the A-side traction roller 4 is adjusted by performing a PID algorithm on the actual position and the target position of the floating roller 11. When the substrate reaches the B-side main roller 5, close the threading start button. When the substrate passes through the B-side main roller 5, press the pressure roller 18 against the substrate. Select the B-side main roller button to divide the area between the unwind reel 1 and the B-side main roller 5 into a whole.

[0091] Step 4: Based on Step 3, click the threading start button. The unwind reel 1 and the B-side main roller 5 move forward as a whole to feed the material. The substrate between the A-side traction roller 4 and the B-side main roller 5 is tightened by the floating roller 12. The deviation of the substrate is adjusted by the deviation rectifying mechanism 23 to ensure that the substrate is in the middle position between the rollers. The speed is based on a fixed speed S. The speed increase or decrease of the B-side main roller 5 is adjusted by performing a PID algorithm on the actual position and the target position of the floating roller 12. When the substrate reaches the B-side oven chamber, turn off the threading start button, fix the substrate on the B-side oven threading chain. The B-side oven threading chain is driven by a servo driver. The oven servo driver feeds back the torque to the PLC. During the oven threading process, the operator controls the oven threading servo through the touch screen, sets a torque target value, and gives a reference speed to the driver. When the torque is about to reach the torque target value, the driver speed gradually decreases to prevent the substrate from being broken due to excessive force. At the same time, the operator can also intervene manually to determine whether to stop the operation of the B-side oven threading servo. When reaching the oven outlet, turn off the threading start button, remove the substrate from the oven chain, turn on the threading start button, and pull the substrate around the floating roller 13 and then to the B-side traction roller 7, and press the pressure roller 19 at the B-side traction roller 7 against the substrate. Select the B-side traction button to divide the area between the unwind reel 1 and the B-side traction roller 7 into a whole.

[0092] Step 5: Based on Step 4, click the threading start button. The unwind reel 1 and the B-side traction roller 7 move forward as a whole to feed the material. The substrate between the B-side main roller 5 and the B-side traction roller 7 is tightened by the floating roller 13. The deviation of the substrate is adjusted by the deviation rectifying mechanism 24 to ensure that the substrate is in the middle position between the rollers. The speed is based on a fixed speed S. The speed increase or decrease of the B-side traction roller 7 is adjusted by performing a PID algorithm on the actual position and the target position of the floating roller 13. When the substrate reaches the take-up traction roller 8, turn off the threading start button. After the substrate passes through the take-up traction roller 8, press the substrate with a pressure roller. Select the take-up traction button to divide the area between the unwind reel 1 and the take-up traction roller 8 into a whole.

[0093] Step 6: Based on Step 5, click the threading start button. The unwind reel 1 and the take-up side traction roller move forward as a whole to feed the material. The substrate between the B-side traction roller 7 and the take-up traction roller 8 is tightened by the floating roller 14. The deviation of the substrate is adjusted by the deviation rectifying mechanism 25 to ensure that the substrate is in the middle position between the rollers. The speed is based on a fixed speed S. The speed increase or decrease of the take-up traction roller 8 is adjusted by performing a PID algorithm on the actual position and the target position of the floating roller 14. When the substrate reaches the take-up reel 9, turn off the threading start button. Thus, the threading process from unwinding to take-up is completed.

[0094] Steps 1 to 6 refer to the action descriptions in the threading mode. In addition, if the substrate breaks in a certain area under normal conditions of the whole machine base material, for example, there is a substrate break between the A-side traction roller 4 and the B-side main roller 5. As long as the operation shown in Step 3 is followed, the substrate is fed to the B-side main roller 5, the broken belt is cut neatly and connected with the corresponding tape, the threading mode is exited, and the whole machine runs normally. The broken belt can be quickly connected and the tape can run normally, improving production efficiency. The same method can be used for connecting the broken belt in other areas.

[0095] Those of ordinary skill in the art can understand that all or part of the steps in the above rapid threading control method of the coater can be completed by instructions or by controlling relevant hardware through instructions. The instructions can be stored in a computer-readable storage medium and loaded and executed by a processor.

[0096] Therefore, an embodiment of the present invention further provides a storage medium, which stores multiple instructions that can be loaded by a processor to execute the steps in the rapid threading control method of the coater provided by the embodiment of the present invention.

[0097] Among them, the storage medium may include: read-only memory (ROM, Read Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk, etc.

[0098] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rapid tape threading control method for a coater, which is used to implement a tape threading operation starting from a unwind reel, ending at a wind reel, and passing through multiple control nodes in sequence. The multiple control nodes include a main roller, a traction roller, and / or an oven; Characterized in that, The control method includes: During the tape threading process, after completing the tape threading operation at the current control node each time, first press the tape at the current control node through a pressure roller so that the tape reaches a preset close state with the current control node, and then control the unwind reel and all the control nodes that have completed the tape threading operation currently to feed the tape forward synchronously as a whole until the feeding stops after reaching the next control node to perform the tape threading operation at the next control node; The control method further includes: When a tape break occurs, determine the two closest control nodes on both sides of the tape break position, and record them as the pre-break node and the post-break node respectively according to the tape threading operation sequence; Control the post-break node and all the control nodes that have completed the tape threading after it to stop feeding the tape, and control the pre-break node, all the control nodes before it, and the unwind reel to feed the tape forward synchronously as a whole until the tape joins at the tape break position; After the tape joins at the tape break position, control the unwind reel and all the control nodes that have completed the tape threading to feed the tape forward synchronously as a whole.

2. The rapid tape threading control method for a coater according to claim 1, Characterized in that, Floating rollers are respectively arranged between two adjacent control nodes; The control method further includes: for the running speeds of the unwind reel and each control node, perform PID increment and decrement adjustment respectively with the corresponding floating roller as a reference.

3. The rapid tape threading control method for a coater according to claim 2, Characterized in that, Deviation correction sensors are respectively arranged between two adjacent control nodes; The control method further includes: during the tape threading process, control the tape to be in the middle position according to the deviation correction sensors.

4. A rapid tape threading control system for a coater, Characterized in that, The control system includes: a controller, an unwind reel, a wind reel, and multiple control nodes located between the unwind reel and the wind reel in sequence. The multiple control nodes include a main roller, a traction roller, and / or an oven; The controller is specifically used for: during the tape threading process, after completing the tape threading operation at the current control node each time, first press the tape at the current control node through a pressure roller so that the tape reaches a preset close state with the current control node, and then control the unwind reel and all the control nodes that have completed the tape threading operation currently to feed the tape forward synchronously as a whole until the feeding stops after reaching the next control node to perform the tape threading operation at the next control node; The controller is further used for: When a tape break occurs, control the post-break node and all the control nodes that have completed the tape threading after it to stop feeding the tape forward, and control the pre-break node, all the control nodes before it, and the unwind reel to feed the tape forward synchronously as a whole until the tape joins at the tape break position; after the tape joins at the tape break position, control the unwind reel and all the control nodes that have completed the tape threading to feed the tape forward synchronously as a whole; Wherein, the pre-break node and the post-break node are the two closest control nodes on both sides of the tape break position.

5. The rapid tape threading control system for a coater according to claim 4, Characterized in that, Along the tape threading direction, floating rollers are respectively arranged between two adjacent control nodes. The controller is further configured to: for the unwinding reel and each control node, respectively perform PID increment and decrement adjustment with the corresponding floating roller as a reference.

6. The coating machine rapid tape threading control system according to claim 4, characterized in that Along the tape threading direction, deviation correction sensors are respectively arranged between two adjacent control nodes. The controller is further configured to: during the tape threading process, control the material tape to be in the middle position according to the deviation correction sensors.

7. The coating machine rapid tape threading control system according to any one of claims 4 to 6, characterized in that The multiple control nodes specifically include a first main roller, a first oven, a first traction roller, a second main roller, a second oven, and a second traction roller arranged in sequence along the tape threading direction.

8. A storage medium, characterized in that At least one instruction is stored in the storage medium, and the instruction is loaded and executed by a processor to implement the operations performed by the coating machine rapid tape threading control method according to any one of claims 1 to 3.

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