A circular die cutting automatic laminating device

Abstract

The present invention provides a circular die-cutting automatic laminating device, comprising: a frame, on which a circular die-cutting mechanism, a laminating mechanism, and a multi-stage laminating mechanism are integrated; a first buffer roller is provided between the unwinding end and the circular die-cutting mechanism, a second buffer roller is provided between the circular die-cutting mechanism and the laminating mechanism, and a third buffer roller is provided between the multi-stage laminating mechanism and the rewinding end, the second buffer roller being movable in a direction perpendicular to the transmission direction of the coil; and a deflection correction mechanism, the deflection correction mechanism comprising a first control module and a linear CCD and a laser rangefinder electrically connected to the first control module, the linear CCD being provided at the unwinding end, and the laser rangefinder being provided at the rewinding end, the first control module being configured to control the second buffer roller to correct the deflection of the coil based on measurement results of the linear CCD and the laser rangefinder. The device provided by the present invention can automatically laminarize coils and different materials, adjust the tension of the coil at multiple positions, and correct the deflection of the coil during transport, thereby improving lamination quality.

Description

Technical Field

[0001] The present disclosure generally relates to the technical field of die-cutting and laminating processing, and in particular to an automatic laminating device for circular die-cutting. Background Art

[0002] A circular die-cutting system is a type of automated equipment widely used in roll-to-roll processing. Its core function is to precisely die-cut specific shapes from continuously conveyed rolls of material (such as film, tape, and paper) using a rotating circular die. Subsequently, a laminating mechanism bonds another material (a different material) to the die-cut roll substrate, and finally, the composite product is produced through lamination and rewinding.

[0003] However, existing devices of this type have significant drawbacks. During high-speed transport, especially when the web passes through multiple process stages like die-cutting, laminating, and pressing, it is prone to fluctuations in tension due to uneven tension control in each stage. This tension fluctuation can cause lateral deviation (deviation) or localized thickness variations (deformation) in the web, affecting the relative positioning accuracy of the die-cut pattern and subsequent laminating stations, and even leading to lamination misalignment. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a circular die-cutting automatic laminating device to solve the above-mentioned problems.

[0005] The present invention provides a circular die-cutting automatic laminating device, comprising:

[0006] A frame, on which a circular die-cutting mechanism, a laminating mechanism and a multi-stage pressing mechanism are integrated. The circular die-cutting mechanism is used to die-cut the coiled material, the laminating mechanism is used to laminarize the foreign material onto the die-cut coiled material, and the multi-stage pressing mechanism is used to press the laminarized coiled material and foreign material;

[0007] Three tension buffer rollers, including a first buffer roller provided between the unwinding end and the circular knife die-cutting mechanism, a second buffer roller provided between the circular knife die-cutting mechanism and the laminating mechanism, and a third buffer roller provided between the multi-stage laminating mechanism and the winding end, wherein the second buffer roller is movable along a direction perpendicular to the transmission direction of the coil;

[0008] A deflection correction mechanism, comprising a first control module and a linear CCD and a laser rangefinder electrically connected to the first control module, wherein the linear CCD is arranged at the unwinding end, and the laser rangefinder (900) is arranged at the rewinding end, and the first control module is used to control the second buffer roller to correct the deflection of the coiled material according to the measurement results of the linear CCD and the laser rangefinder.

[0009] According to the technical solution provided by the present invention, the circular die cutting mechanism includes a die roller and an anvil roller, and the die roller is installed on the frame through a quick-change die assembly, and the quick-change die assembly includes:

[0010] A pair of mounting bases, the mounting bases being rotatably connected to the frame, and a mounting surface being provided on a side of the two mounting bases close to each other;

[0011] A U-shaped slot, the U-shaped slot being provided on the mounting surface and being used to accommodate the shaft core of the die-cutting roller, and a positioning block being provided at the bottom of the U-shaped slot;

[0012] Guide rollers, the guide rollers being arranged on both sides of the entrance of the U-shaped slot;

[0013] A telescopic claw is provided on a side of the U-shaped slot close to the opening, and is used to radially lock the shaft core of the die-cutting roller.

[0014] According to the technical solution provided by the present invention, the multi-stage pressing mechanism includes a first bottom conveying device and a suspension base, and the suspension base is provided with:

[0015] A preheating roller, the preheating roller being arranged upstream of the web conveying path, the surface of the preheating roller being coated with an anti-stick coating;

[0016] A servo pressure roller, the servo pressure roller is arranged downstream of the preheating roller, the servo pressure roller is installed on the suspension base through a servo motor, and the pressure of the servo pressure roller is adjusted by the servo motor;

[0017] A cooling roller is provided downstream of the servo pressure roller, and a cooling water channel is provided inside the cooling roller.

[0018] According to the technical solution provided by the present invention, the first control module is configured to:

[0019] Acquire a current position deviation of the edge of the web collected in real time by the linear CCD, wherein the current position deviation is an offset of the web perpendicular to the conveying direction;

[0020] Obtaining the coil thickness deformation variable synchronously measured by the laser rangefinder, and calculating the thickness change rate according to the coil thickness deformation variable;

[0021] Calculating a real-time deviation correction compensation amount according to the current position deviation and the thickness change rate;

[0022] Dynamically predict the position deviation of the coil at the next moment, and generate a correction instruction according to the position deviation at the next moment and the correction compensation amount to drive the second buffer roller to correct the coil.

[0023] According to the technical solution provided by the present invention, a first tension sensor is provided at the unwinding end, and a second tension sensor is provided at the winding end; the first tension sensor and the second tension sensor are electrically connected to a second control module, and the second control module is used to process the detection results of the first tension sensor and the second tension sensor to respectively control the first buffer roller and the third buffer roller to adjust the tension of the coil.

[0024] According to the technical solution provided by the present invention, the first buffer roller and the third buffer roller include:

[0025] A swing bracket, the swing bracket is hinged to the frame via a rotating shaft, and the swing bracket is driven by a driving motor to rotate around the rotating shaft;

[0026] a first roller body, wherein both ends of the first roller body are connected to the swing bracket through bearings, and the surface of the first roller body is coated with a high friction coefficient coating;

[0027] The second buffer roller includes:

[0028] A sliding seat, wherein the sliding seat is slidably mounted on the frame, and a sliding direction is perpendicular to a conveying direction of the coil;

[0029] The second roller body is installed on the sliding seat through a telescopic push rod; the telescopic push rod applies radial pressure to the second roller body.

[0030] According to the technical solution provided by the present invention, the second control module is configured to:

[0031] Acquire a first real-time tension acquired by the first tension sensor and a second real-time tension acquired by the second tension sensor;

[0032] Calculating a first control tension using a decoupling control algorithm based on the second real-time tension, and calculating a second control tension using a decoupling control algorithm based on the first real-time tension;

[0033] calculating a first swing angle according to the first control tension and the target tension, and controlling the rotation of the swing bracket of the first buffer roller according to the first swing angle;

[0034] A second swing angle is calculated according to the second control tension and the target tension, and the swing bracket of the third buffer roller is controlled to rotate according to the second swing angle.

[0035] According to the technical solution provided by the present invention, the second control module is further configured to:

[0036] Obtaining a first linear velocity and a second linear velocity, and calculating a linear velocity difference between the two; the first linear velocity is the linear velocity of the die-cutting roller, and the second linear velocity is the linear velocity of the servo pressure roller;

[0037] When it is determined that the linear speed difference is greater than a set threshold, controlling the telescopic push rod to press down the second roller body with a first set pressure;

[0038] When it is determined that the linear velocity difference is less than or equal to a set threshold, a reference pressure is calculated according to the linear velocity difference, and the telescopic push rod is controlled to press down the second roller body with the reference pressure.

[0039] According to the technical solution provided by the present invention, a temperature sensor is provided on the suspension base, and the temperature sensor is used to detect the first temperature of the preheating roller position, the second temperature of the servo pressure roller position and the third temperature of the cooling roller position; the multi-stage pressing mechanism also includes a third control module, and the third control module is configured to feedback-adjust the temperature of the preheating roller according to the first temperature, and is also configured to feedback-adjust the temperature of the cooling roller according to the third temperature.

[0040] According to the technical solution provided by the present invention, the multi-stage pressing mechanism also includes a fourth control module, which is electrically connected to the laser rangefinder, the temperature sensor and the servo motor, and the fourth control module is configured to control the servo motor according to the coil thickness detected by the laser rangefinder and the second temperature.

[0041] Compared with the prior art, the present invention has the following beneficial effects: by arranging a first buffer roller between the unwinding end and the circular knife die-cutting mechanism, arranging a second buffer roller movable along a direction perpendicular to the web transmission direction between the circular knife die-cutting mechanism and the laminating mechanism, and arranging a third buffer roller between the multi-stage laminating mechanism and the winding end, and arranging a correction mechanism consisting of a linear CCD at the unwinding end, a laser rangefinder at the winding end and a first control module, it is possible to achieve independent and precise segmented adjustment of the tension of multiple key sections during the web transmission process, thereby effectively suppressing tension fluctuations on the entire transmission path; in particular, the first control module is used to analyze in real time the web edge position deviation detected by the linear CCD and the thickness change detected by the laser rangefinder, and dynamically control the second buffer roller to perform lateral movement correction, so that on the basis of tension adjustment, the lateral offset and thickness deformation of the web caused by uneven tension or other factors are actively, in real time and accurately compensated, thereby significantly improving the laminating accuracy and product yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0043] Figure 1 A schematic structural diagram of the circular die-cutting automatic laminating device provided by the present invention;

[0044] Figure 2 This is a schematic diagram of the installation of the die roller and the quick-change die assembly;

[0045] Figure 3 It is a structural diagram of the quick-change die assembly.

[0046] Reference numerals: 100, frame; 101, coil; 102, different material; 110, unwinding end; 111, first tension sensor; 120, rewinding end; 121, second tension sensor; 130, rewinding wheel; 200, circular die-cutting mechanism; 210, die-cutting roller; 211, shaft core; 212, notch; 220, anvil roller; 230, quick-change die-cutting assembly; 231, mounting base; 232, U-shaped slot; 233, positioning block; 234, guide roller; 235, telescopic claw; 300, laminating mechanism; 310, second bottom conveying device; 320, three-axis robotic arm; 330 , suction nozzle; 400, multi-stage pressing mechanism; 410, first bottom conveying device; 420, hanging base; 421, preheating roller; 422, servo pressing roller; 423, servo motor; 424, cooling roller; 430, temperature sensor; 431, first sensor; 432, second sensor; 433, third sensor; 500, first buffer roller; 510, swing bracket; 520, first roller body; 600, second buffer roller; 610, sliding seat; 620, second roller body; 630, telescopic push rod; 700, third buffer roller; 800, linear CCD; 900, laser rangefinder. DETAILED DESCRIPTION

[0047] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the relevant invention and are not intended to limit the invention. It should also be noted that, for ease of description, only portions relevant to the invention are shown in the accompanying drawings.

[0048] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0049] Please refer to Figure 1-Figure 3 The present invention provides a circular die-cutting automatic laminating device, comprising:

[0050] The frame 100 is integrated with a circular die-cutting mechanism 200, a laminating mechanism 300, and a multi-stage pressing mechanism 400. The circular die-cutting mechanism 200 is used to die-cut the coil 101. The laminating mechanism 300 is used to laminar the foreign material 102 onto the die-cut coil 101. The multi-stage pressing mechanism 400 is used to press the laminar coil 101 and foreign material 102.

[0051] Three tension buffer rollers, including a first buffer roller 500 disposed between the unwinding end 110 and the circular knife die-cutting mechanism 200, a second buffer roller 600 disposed between the circular knife die-cutting mechanism 200 and the laminating mechanism 300, and a third buffer roller 700 disposed between the multi-stage laminating mechanism 400 and the winding end 120, wherein the second buffer roller 600 is movable along a direction perpendicular to the transmission direction of the web 101;

[0052] The correction mechanism includes a first control module and a linear CCD800 and a laser rangefinder 900 electrically connected to the first control module, the linear CCD800 is arranged at the unwinding end 110, and the laser rangefinder 900 is arranged at the winding end 120. The first control module is used to control the second buffer roller 600 to correct the coil 101 according to the measurement results of the linear CCD800 and the laser rangefinder 900.

[0053] Specifically, the frame 100 serves as the main frame of the device, with one end of the frame 100 forming an unwinding end 110 and the other end forming a rewinding end 120; the coil 101 is unwound by an unwinding wheel at the unwinding end 110, and is rewound by a rewinding wheel at the rewinding end 120, and the coil 101 passes through the frame 100 during the transmission process. In this embodiment, the frame 100 integrates a circular die-cutting mechanism 200, a laminating mechanism 300, and a multi-stage pressing mechanism 400 for processing the coil 101. As the coil 101 passes through the frame 100, the circular die-cutting mechanism 200 first cuts a matrix of a set shape on the coil 101. The laminating mechanism 300 then grabs the foreign material 102 and laminates it on the matrix. The multi-stage pressing mechanism 400 then laminates the laminar foreign material 102 and the matrix in multiple stages to ensure a tight fit between the foreign material 102 and the matrix, and finally delivers the laminar foreign material 102 to the reel 120 for subsequent processing. The frame 100 is also provided with a reel 130, which is used to recycle the protective film on the surface of the coil 101. The reel 130 winds the protective film by rotating.

[0054] Specifically, three tension buffer rollers are provided on the conveying path of the coil 101, and the three tension buffer rollers are used to adjust the tension of the first section, middle section and tail section of the coil 101 respectively; the three tension buffer rollers include a first buffer roller 500, a second buffer roller 600 and a third buffer roller 700, wherein the first buffer roller 500 is provided between the unwinding end 110 and the circular knife die-cutting mechanism 200, and the first buffer roller 500 presses down the first section of the coil 101 by swinging to adjust the tension of the first section; the first buffer roller 500 compensates for the difference between the unwinding speed and the processing speed by adjusting the path length of the coil 101, ensures that the tension of the coil 101 entering the circular knife die-cutting mechanism 200 is constant, and reduces the material stretching overload caused by sudden tension changes, which is particularly suitable for ultra-thin or highly elastic materials, such as PET film, silicone, etc. The second buffer roller 600 is located between the circular die-cutting mechanism 200 and the laminating mechanism 300. It moves up and down to press down on the middle section of the web 101, adjusting the tension of the leading section. This stabilizes the speed difference between the die-cutting and laminating processes, preventing laminating misalignment or air bubbles caused by speed asynchrony. The third buffer roller 700 is located between the multi-stage laminating mechanism 400 and the winding end 120. It swings down to press down on the trailing section of the web 101, adjusting its tension. This creates a closed-loop tension control loop with the leading section of the web 101, preventing loose coils or edge collapse.

[0055] Specifically, in addition to being adjusted up and down, the second buffer roller 600 can also be adjusted left and right in a direction perpendicular to the transmission path of the coil 101. By friction with the coil 101, it causes the coil 101 to shift laterally, thereby correcting the deviation of the coil 101. The second buffer roller 600 can also cooperate with a correction mechanism to achieve automatic correction. The correction mechanism consists of a linear CCD 800, a laser rangefinder 900, and a first control module. The linear CCD 800 is located at the unwinding end 110 and is used to detect the left and right deviation of the first section of the coil 101 during transmission. The laser rangefinder 900 is located at the rewinding end 120 and is located above the coil 101. It is used to detect changes in the thickness of the coil 101. The first control module, the linear CCD 800, and the laser rangefinder 900 control the left and right adjustment of the second buffer roller 600, thereby correcting the left and right deviation of the coil 101.

[0056] Furthermore, the first control module controls the second buffer roller 600 through steps a1-a2:

[0057] a1: Acquire the current position deviation of the edge of the coil 101 collected in real time by the linear CCD 800. The current position deviation is the offset of the coil 101 perpendicular to the conveying direction.

[0058] Specifically, first define the direction of the coil 101 during transmission. Take any flat section of the coil 101 and define the transmission direction of the coil 101 as the Y direction. Define the direction perpendicular to the Y direction and parallel to the surface of the coil 101 as the X direction. Define the direction perpendicular to the surface of the coil 101 as the Z direction.

[0059] In step a1, the linear CCD 800 is electrically connected to the first control module. The linear CCD 800 is a photosensitive array composed of a row of photosensitive diodes, which is used to detect a one-dimensional image of the position of the web 101 and obtain the current position deviation of the edge of the web 101 based on the one-dimensional image. , that is, the deviation in the X direction, get the current position deviation Then the linear CCD800 will calculate the current position deviation Sent to the first control module.

[0060] a2: Obtain the thickness deformation of the coil 101 synchronously measured by the laser rangefinder 900, and calculate the thickness change rate based on the thickness deformation of the coil 101.

[0061] Specifically, in step a2, the laser rangefinder 900 is electrically connected to the first control module, and the laser rangefinder 900 detects the thickness change of the coil 101 according to the time of laser reflection, thereby obtaining the thickness deformation of the coil 101. , that is, the deformation in the Z direction, to obtain the thickness deformation of the coil 101 Then the thickness of the coil 101 is changed to Send to the first control module, the first control module according to the thickness deformation Calculate thickness change rate .

[0062] a3: Calculating a real-time deviation correction compensation amount according to the current position deviation and the thickness change rate.

[0063] Specifically, in step a3, the current position deviation obtained in step a1 and the thickness change rate obtained in step a2 are transmitted to the deformation prediction model, and the real-time correction compensation value is generated based on the deformation prediction model of multi-sensor fusion. , the calculation formula is shown in formula (1):

[0064] Formula (1)

[0065] in, Indicates the target position of the coil 101 on the X axis, Indicates the current position deviation The weight coefficient of , which can be selected as 0.8, is dynamically adjusted according to the stiffness of the coil 101; Indicates thickness change rate The coefficient of , the optional value is 0.15, which is positively correlated with the material elongation; It is the integral correction coefficient, with an optional value of 0.05, used to eliminate steady-state errors.

[0066] a4: Dynamically predicting the position deviation of the web 101 at the next moment, generating a correction instruction according to the position deviation at the next moment and the correction compensation amount, so as to drive the second buffer roller 600 to correct the deviation of the web 101.

[0067] Specifically, in step a4, the position of the coil 101 at the next moment is first dynamically predicted. , the calculation formula is shown in formula (2):

[0068] Formula (2)

[0069] in, is the instantaneous speed, Indicates the actual position of the coil 101 at the current moment, Indicates the actual position of the coil 101 at the previous moment, is the instantaneous acceleration;

[0070] Then calculate the value in step a3 and the value calculated in step a4 Combined, the total correction amount is calculated , the calculation formula is shown in formula (3):

[0071] Formula (3)

[0072] in, Represents the prediction weight coefficient, with an optional value of 0.6, which is used to balance the contribution of current compensation and future predictions;

[0073] Then according to the total correction amount The second buffer roller 600 is then driven to adjust the position of the coil 101 by switching the displacement instruction of the second buffer roller 600 along the direction perpendicular to the transmission direction of the coil 101 .

[0074] Furthermore, it also includes an online AOI detection module, which determines that after three consecutive corrections If it is still greater than 0.05mm, an alarm will be triggered and production will be suspended.

[0075] Furthermore, the circular die cutting mechanism 200 includes a die roller 210 and an anvil roller 220. The die roller 210 is mounted on the frame 100 via a quick-change die assembly 230. The quick-change die assembly 230 includes:

[0076] A pair of mounting bases 231, the mounting bases 231 are rotatably connected to the frame 100, and a mounting surface is provided on a side of the two mounting bases 231 close to each other;

[0077] A U-shaped slot 232 is provided on the mounting surface. The U-shaped slot 232 is used to accommodate the shaft core 211 of the die-cutting roller 210. A positioning block 233 is provided at the bottom of the U-shaped slot 232.

[0078] Guide rollers 234 , which are disposed on both sides of the entrance of the U-shaped slot 232 ;

[0079] The telescopic claw 235 is provided on a side of the U-shaped slot 232 close to the opening. The telescopic claw 235 is used to radially lock the shaft core 211 of the die-cutting roller 210 .

[0080] Specifically, the circular die-cutting mechanism 200 consists of a die-cutting roller 210 and an anvil roller 220. The roll 101 is die-cut when passing between the die-cutting roller 210 and the anvil roller 220. Both ends of the anvil roller 220 are rotatably mounted on the frame 100, and the die-cutting roller 210 is connected to the frame 100 through a quick-change die-cutting assembly 230. The setting of the quick-change die-cutting assembly 230 makes it convenient to replace the die-cutting roller 210, which greatly reduces the replacement time compared to the traditional die-cutting roller installation method.

[0081] The quick-change die-cutting assembly 230 consists of a pair of mounting bases 231, a pair of U-shaped slots 232, two sets of guide rollers 234 and telescopic claws 235; one of the mounting bases 231 is mounted on one side of the frame 100, and the other mounting base 231 is mounted on the other side of the frame 100. Both mounting bases 231 are rotatably connected to the frame 100, and a mounting surface is set on the side where the two mounting bases 231 are close to each other; one of the mounting bases 231 is transmission-connected to the output shaft of the rotating motor as a driving end, and the other mounting base 231 serves as a driven end. The die-cutting roller 210 is installed between the two mounting bases 231. A pair of U-shaped slots 232 are respectively provided on the mounting surfaces of the two mounting bases 231. One side of the U-shaped slots 232 is fixed to the mounting surface, and the axis of the U-shaped slots 232 is parallel to the rotation axis of the mounting base 231. The U-shaped slots 232 are used to accommodate the shaft core 211 of the die-cutting roller 210. The shaft core 211 of the die-cutting roller 210 is inserted into the U-shaped slots 232 from the side where the U-shaped slots 232 open. A positioning block 233 is provided at the bottom of the U-shaped slots 232. The cross-section of the positioning block 233 is tapered, and a corresponding notch 212 is provided on one side of the shaft core 211 of the die-cutting roller 210. The mutual engagement of the positioning block 233 and the notch 212 facilitates the positioning of the die-cutting roller 210 after it is inserted into the U-shaped slots 232, and prevents the shaft core 211 of the die-cutting roller 210 from rotating within the U-shaped slots 232. A set of two guide rollers 234 is provided. The two guide rollers 234 are respectively arranged on either side of the entrance of the U-shaped slot 232. The distance between the two guide rollers 234 is slightly larger than the opening width of the U-shaped slot 232. The two guide rollers 234 are rotatable to guide the shaft core 211 during the insertion into the U-shaped slot 232. The retractable claws 235 are retractable along the radial direction of the U-shaped slot 232. Optionally, the retractable claws 235 are driven by a pneumatic cylinder or an oil cylinder. When the shaft core 211 of the die-cutting roller 210 is inserted into the U-shaped slot 232, the retractable claws 235 are extended to engage the U-shaped slot 232 to secure the shaft core 211 of the die-cutting roller 210.

[0082] Furthermore, the multi-stage pressing mechanism 400 includes a first bottom conveying device 410 and a suspension base 420, and the suspension base 420 is provided with:

[0083] A preheating roller 421, which is disposed upstream of the conveying path of the web 101 and has a surface coated with an anti-stick coating;

[0084] A servo pressure roller 422 is provided downstream of the preheating roller 421 . The servo pressure roller 422 is mounted on the suspension base 420 via a servo motor 423 . The pressure of the servo pressure roller 422 is adjusted by the servo motor 423 .

[0085] The cooling roller 424 is disposed downstream of the servo pressure roller 422 , and a cooling water channel is provided inside the cooling roller 424 .

[0086] Specifically, the first bottom conveyor 410 is used to support the coil 101 during the lamination process and to convey the coil 101 via a belt. The suspension base 420 is mounted on the frame 100 and suspended above the first bottom conveyor 410. The coil 101 is conveyed between the suspension base 420 and the first bottom conveyor 410. A preheating roller 421, a servo pressure roller 422 and a cooling roller 424 are arranged on the suspension base 420, and multi-stage pressing is achieved by the preheating roller 421, the servo pressure roller 422 and the cooling roller 424, wherein the preheating roller 421 and the cooling roller 424 are only rotatably connected to the suspension base 420, and rotate drivenly with the conveyance of the coil 101, and the servo pressure roller 422 is installed on the suspension base 420 through the gear rack between the servo motor 423 and the rack. The servo motor 423 can drive the servo pressure roller 422 to rise and fall, thereby changing the pressure applied by the servo pressure roller 422 to the coil 101, and the servo pressure roller 422 is actively rotated by the motor drive. The preheating roller 421 can be heated by electromagnetic heating or thermal oil circulation heating to heat the coil 101 to a preset temperature range; the coil 101 is preheated by the preheating roller 421 so that the coil 101 can be softened to increase the viscosity, thereby ensuring the bonding strength between the substrate and the foreign material 102. The cooling roller 424 is cooled by circulating cooling water to quickly reduce the temperature of the substrate and foreign material 102 after bonding, thereby achieving rapid solidification.

[0087] Furthermore, the unwinding end 110 is provided with a first tension sensor 111, and the winding end 120 is provided with a second tension sensor 121; the first tension sensor 111 and the second tension sensor 121 are electrically connected to a second control module, and the second control module is used to process the detection results of the first tension sensor 111 and the second tension sensor 121 to respectively control the first buffer roller 500 and the third buffer roller 700 to adjust the tension of the coil 101.

[0088] Specifically, the first tension sensor 111 and the second tension sensor 121 detect the tension of the first and last sections of the coil 101 in real time, and send the detection results to the second control module. The second control module processes the detection results and controls the first buffer roller 500 and the third buffer roller 700 respectively, and then adjusts the tension of the first and last sections of the coil 101 respectively, thereby realizing closed-loop adjustment of the tension.

[0089] Furthermore, the first buffer roller 500 and the third buffer roller 700 include:

[0090] A swing bracket 510 , wherein the swing bracket 510 is hinged to the frame 100 via a rotating shaft, and the swing bracket 510 is driven by a driving motor to rotate around the rotating shaft;

[0091] A first roller 520, both ends of which are connected to the swing bracket 510 via bearings, and a surface of the first roller 520 is coated with a high friction coefficient coating;

[0092] The second buffer roller 600 includes:

[0093] A sliding seat 610 is slidably mounted on the frame 100 , with a sliding direction perpendicular to a conveying direction of the coil 101 ;

[0094] The second roller 620 is mounted on the sliding seat 610 via a telescopic push rod 630 ; the telescopic push rod 630 applies radial pressure to the second roller 620 .

[0095] Specifically, the first buffer roller 500 and the third buffer roller 700 have identical structures, differing only in their placement. Therefore, only the specific structure of the first buffer roller 500 will be described. The first buffer roller 500 comprises a swing bracket 510 and a first roller body 520. One end of the swing bracket 510 is connected to a rotating shaft perpendicular to the swing bracket. The rotating shaft is rotatably mounted on the frame 100 and is driven by a drive motor. The rotating shaft is perpendicular to the transport direction of the web 101 and parallel to the surface of the web 101. The first roller body 520 is rotatably mounted on the other end of the swing bracket 510 and is perpendicular to the swing bracket 510. When the tension of the web 101 needs to be adjusted, the drive motor rotates the rotating shaft, which in turn drives the swing bracket 510 to rotate. The swing bracket 510 then drives the first roller body 520 to swing downward to press down on the web 101, thereby adjusting the tension of the web 101. The surface of the first roller 520 is provided with a high friction coefficient coating so as to increase the friction between the first roller 520 and the web 101 , thereby ensuring more effective tension adjustment.

[0096] Specifically, the second buffer roller 600 consists of a sliding base 610 and a second roller body 620. The sliding base 610 is slidably mounted on the top of the frame 100, allowing the second buffer roller 600 to be adjusted perpendicular to the direction of transport of the web 101. The movement of the sliding base 610 can optionally be driven by a motor. The second roller body 620 is mounted on the sliding base 610 via a telescopic push rod 630. The telescopic push rod 630 is fixed to the bottom of the sliding base 610 and has a retractable free end. The second roller body 620 is rotatably mounted on the free end of the telescopic push rod 630, which is driven by a motor. When the tension of the web 101 needs to be adjusted, the telescopic push rod 630 pushes the second roller body 620 downward, which in turn presses the web 101 downward to adjust the tension. A pressure sensor is provided on the surface of the second roller body 620. The pressure sensor is electrically connected to the second control module to detect the pressure applied by the telescopic push rod 630 in real time.

[0097] Furthermore, the second control module controls the first buffer roller 500 and the third buffer roller 700 through the following steps b1-b4:

[0098] b1: Acquire a first real-time tension collected by the first tension sensor 111 and a second real-time tension collected by the second tension sensor 121 .

[0099] Specifically, in step b1, the tension of the first and last sections of the coil 101 is collected in real time by the first tension sensor 111 and the second tension sensor 121, that is, the first real-time tension and the second real-time tension , after collecting the first real-time tension and the second real-time tension Send to the second control module.

[0100] b2: calculating a first control tension using a decoupling control algorithm based on the second real-time tension, and calculating a second control tension using a decoupling control algorithm based on the first real-time tension.

[0101] Specifically, in step b2, the tension to be controlled and maintained by the first buffer roller 500 and the third buffer roller 700 is dynamically adjusted by the decoupling control algorithm, that is, the first control tension and the second controlled tension , the calculation formula is as shown in formula (4):

[0102] Formula (4)

[0103] in, is the average tension; is the decoupling coefficient, the optional value is 0.7, according to the width of the coil 101 Adaptable adjustment ( , The unit is mm); is the feedforward compensation, through the material inertia and damping coefficient Calculation, the calculation formula is as follows (5):

[0104] Formula (5)

[0105] In formula (5) The linear speed of the coil 101 can be obtained by setting the rotation speed of the unwinding end 110. It is the inherent tension calibration value of the coil 101.

[0106] b3: Calculating a first swing angle according to the first control tension and the target tension, and controlling the swing bracket 510 of the first buffer roller 500 to rotate according to the first swing angle.

[0107] Specifically, in step b3, according to The swing angle of the swing bracket 510 of the first buffer roller 500 is adjusted by PID , the calculation formula is shown in the following formula (6):

[0108] Formula (6)

[0109] in, represents the target tension, and To adjust the parameters, optional is 0.6, is 0.3.

[0110] b4: Calculating a second swing angle according to the second control tension and the target tension, and controlling the swing bracket 510 of the third buffer roller 700 to rotate according to the second swing angle.

[0111] Specifically, in step b4, according to The swing angle of the swing bracket 510 of the third buffer roller 700 is adjusted by PID , the calculation formula is shown in the following formula (VII):

[0112] Formula (7)

[0113] in, and For adjustment parameters, optional, is 0.5, is 0.2.

[0114] Furthermore, the second control module controls the second buffer roller 600 through the following steps c1-c3:

[0115] c1: Obtain a first linear velocity and a second linear velocity, and calculate the linear velocity difference between the two; the first linear velocity is the linear velocity of the die-cutting roller 210 , and the second linear velocity is the linear velocity of the servo pressure roller 422 .

[0116] Specifically, in step c1, the first linear velocity is first calculated based on the rotation speed and diameter of the die roller 210, and the second linear velocity is calculated based on the rotation speed and diameter of the servo pressure roller 422. Then, the first linear velocity and the second linear velocity are sent to the second control module, and the second control module calculates the linear velocity difference.

[0117] c2: When it is determined that the linear velocity difference is greater than a set threshold, the telescopic push rod 630 is controlled to press down the second roller 620 with a first set pressure.

[0118] c3: When it is determined that the linear velocity difference is less than or equal to the set threshold, a reference pressure is calculated according to the linear velocity difference, and the telescopic push rod 630 is controlled to press down the second roller 620 with the reference pressure.

[0119] Specifically, in summary, in steps c2 and c3, the second buffer roller 600 is controlled according to the linear velocity difference, and the control logic is illustrated by the following formula (8):

[0120] Formula (8)

[0121] in, It represents the pressure provided by the telescopic push rod 630 when the second buffer roller 600 adjusts the middle section of the web 101 to the target tension. Indicates line speed difference;

[0122] Getting pressure Afterwards, the second control module The telescopic push rod 630 is controlled to extend and retract, and the pressure is fed back in real time through the pressure sensor on the surface of the second roller body 620 until the pressure applied by the telescopic push rod 630 meets the pressure .

[0123] Furthermore, a temperature sensor 430 is provided on the suspension base 420, and the temperature sensor 430 is used to detect the first temperature of the position of the preheating roller 421, the second temperature of the position of the servo pressure roller 422 and the third temperature of the position of the cooling roller 424; the multi-stage pressing mechanism 400 also includes a third control module, and the third control module is configured to feedback-adjust the temperature of the preheating roller 421 according to the first temperature, and is also configured to feedback-adjust the temperature of the cooling roller 424 according to the third temperature.

[0124] Specifically, the temperature sensor 430 includes a first sensor 431, a second sensor 432, and a third sensor 433. The first sensor 431 is used to detect the temperature at the contact point between the web 101 and the preheat roller 421, i.e., the first temperature; the second sensor 432 is used to detect the temperature at the contact point between the web 101 and the servo pressure roller 422, i.e., the second temperature; and the third sensor 433 is used to detect the temperature at the contact point between the web 101 and the cooling roller 424, i.e., the third temperature. The first, second, and third sensors 431, 432, 433 are all non-contact sensors and are electrically connected to a third control module. When the third control module determines that the first temperature is lower than the set temperature of the preheat roller 421, it controls the preheat roller 421 to increase its temperature. When the third control module determines that the third temperature is higher than the set temperature of the cooling roller 424, it controls the cooling roller 424 to further decrease its temperature.

[0125] Furthermore, the multi-stage pressing mechanism 400 also includes a fourth control module, which is electrically connected to the laser rangefinder 900, the temperature sensor 430 and the servo motor 423, and the fourth control module is configured to control the servo motor 423 according to the thickness of the coil 101 detected by the laser rangefinder 900 and the second temperature.

[0126] Specifically, a thin film pressure sensor array is provided on the surface of the servo pressure roller 422 , and the thin film pressure sensor array is electrically connected to the fourth control module.

[0127] The control method of the servo motor 423 is as follows: First, the thickness of the coil 101 is detected by the laser rangefinder 900. , then the thickness Send to the fourth control module, synchronously, the second sensor 432 real-time second temperature Send to the fourth control module; the fourth control module according to the thickness and the second temperature The downward pressure that the servo pressure roller 422 needs to apply to the web 101 is calculated. The calculation formula is illustrated by the following formula (9):

[0128] Formula (9)

[0129] in, Indicates the downward pressure that the servo pressure roller 422 needs to apply to the web 101;

[0130] Getting pressure After that, the fourth control module The servo motor 423 is controlled to adjust the downward pressure of the servo pressure roller 422 until the pressure value detected by the film pressure sensor array is consistent with the pressure value detected by the film pressure sensor array. equal.

[0131] Furthermore, the bonding mechanism 300 includes a second bottom conveying device 310, a three-axis robotic arm 320 and a suction nozzle 330 provided at the free end of the three-axis robotic arm 320. The suction nozzle 330 is connected to the suction device. The suction nozzle 330 grasps the foreign material 102 by adsorbing the foreign material 102. The three-axis robotic arm 320 is used to drive the suction nozzle 330 to move and position in multiple positions. The second bottom conveying device 310 is used to support the roll material 101 when bonding the foreign material 102.

[0132] The above description is merely a preferred embodiment of the present invention and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the invention is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the inventive concept. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in the present invention.

Claims

1. A circular die cutting automatic laminating device, characterized in that: include: A frame (100), wherein a circular knife die-cutting mechanism (200), a laminating mechanism (300), and a multi-stage pressing mechanism (400) are integrated on the frame (100), wherein the circular knife die-cutting mechanism (200) is used for die-cutting a coiled material (101), the laminating mechanism (300) is used for laminating a different material (102) onto the die-cut coiled material (101), and the multi-stage pressing mechanism (400) is used for pressing the laminated coiled material (101) and the different material (102); Three tension buffer rollers, the three tension buffer rollers comprising a first buffer roller (500) provided between the unwinding end (110) and the circular knife die-cutting mechanism (200), a second buffer roller (600) provided between the circular knife die-cutting mechanism (200) and the laminating mechanism (300), and a third buffer roller (700) provided between the multi-stage laminating mechanism (400) and the winding end (120), wherein the second buffer roller (600) is movable along a transmission direction perpendicular to the coil (101); A deflection correction mechanism, the deflection correction mechanism comprising a first control module and a linear CCD (800) and a laser rangefinder (900) electrically connected to the first control module, the linear CCD (800) being arranged at the unwinding end (110), the laser rangefinder (900) being arranged at the rewinding end (120), and the first control module being used for controlling the second buffer roller (600) to perform deflection correction on the coiled material (101) based on measurement results of the linear CCD (800) and the laser rangefinder (900); The circular die-cutting mechanism (200) comprises a die-cutting roller (210) and an anvil roller (220); the die-cutting roller (210) is mounted on the frame (100) via a quick-change die-cutting assembly (230); the quick-change die-cutting assembly (230) comprises: a pair of mounting bases (231), the mounting bases (231) being rotatably connected to the frame (100), and a mounting surface being provided on a side of the two mounting bases (231) close to each other; A U-shaped card slot (232), the U-shaped card slot (232) being provided on the mounting surface, the U-shaped card slot (232) being used to accommodate the shaft core (211) of the die-cutting roller (210), and a positioning block (233) being provided at the bottom of the U-shaped card slot (232); Guide rollers (234), the guide rollers (234) being arranged on both sides of the entrance of the U-shaped slot (232); a telescopic claw (235), the telescopic claw (235) being arranged on a side of the U-shaped slot (232) close to the opening, the telescopic claw (235) being used to radially lock the shaft core (211) of the die-cutting roller (210); The multi-stage pressing mechanism (400) comprises a first bottom conveying device (410) and a suspension base (420), wherein the suspension base (420) is provided with: a preheating roller (421), the preheating roller (421) being arranged upstream of the conveying path of the coiled material (101), the surface of the preheating roller (421) being coated with an anti-stick coating; A servo pressure roller (422), the servo pressure roller (422) is arranged downstream of the preheating roller (421), the servo pressure roller (422) is mounted on the suspension base (420) via a servo motor (423), and the pressure of the servo pressure roller (422) is adjusted by the servo motor (423); A cooling roller (424) is provided downstream of the servo pressure roller (422), and a cooling water channel is provided inside the cooling roller (424).

2. The circular die cutting automatic laminating device according to claim 1, characterized in that: The first control module is configured to: Acquiring a current position deviation of the edge of the coil (101) collected in real time by the linear CCD (800), wherein the current position deviation is an offset of the coil (101) perpendicular to the conveying direction; Obtaining the thickness deformation of the coiled material (101) synchronously measured by the laser rangefinder (900), and calculating the thickness change rate based on the thickness deformation of the coiled material (101); Calculating a real-time deviation correction compensation amount according to the current position deviation and the thickness change rate; Dynamically predict the position deviation of the coil (101) at the next moment, and generate a correction instruction based on the position deviation at the next moment and the correction compensation amount to drive the second buffer roller (600) to correct the coil (101).

3. The circular die cutting automatic laminating device according to claim 2, characterized in that: The unwinding end (110) is provided with a first tension sensor (111), and the rewinding end (120) is provided with a second tension sensor (121); the first tension sensor (111) and the second tension sensor (121) are electrically connected to a second control module, and the second control module is used to process the detection results of the first tension sensor (111) and the second tension sensor (121) to respectively control the first buffer roller (500) and the third buffer roller (700) to adjust the tension of the coil (101).

4. The circular die cutting automatic laminating device according to claim 3, characterized in that: The first buffer roller (500) and the third buffer roller (700) include: A swing bracket (510), the swing bracket (510) being hinged to the frame (100) via a rotating shaft, and the swing bracket (510) being driven by a driving motor to rotate around the rotating shaft; a first roller body (520), wherein both ends of the first roller body (520) are connected to the swing bracket (510) via bearings, and a surface of the first roller body (520) is coated with a high friction coefficient coating; The second buffer roller (600) comprises: a sliding seat (610), the sliding seat (610) being slidably mounted on the frame (100), with a sliding direction perpendicular to a transmission direction of the coiled material (101); A second roller body (620), wherein the second roller body (620) is mounted on the sliding seat (610) via a telescopic push rod (630); the telescopic push rod (630) applies radial pressure to the second roller body (620).

5. The circular die cutting automatic laminating device according to claim 4, characterized in that: The second control module is configured to: Acquiring a first real-time tension collected by the first tension sensor (111) and a second real-time tension collected by the second tension sensor (121); Calculating a first control tension using a decoupling control algorithm based on the second real-time tension, and calculating a second control tension using a decoupling control algorithm based on the first real-time tension; Calculating a first swing angle using the first control tension and the target tension, and controlling the rotation of the swing bracket (510) of the first buffer roller (500) according to the first swing angle; A second swing angle is calculated using the second control tension and the target tension, and the swing bracket (510) of the third buffer roller (700) is controlled to rotate according to the second swing angle.

6. The circular die cutting automatic laminating device according to claim 5, characterized in that: The second control module is further configured to: Obtaining a first linear velocity and a second linear velocity, and calculating a linear velocity difference between the two; the first linear velocity is the linear velocity of the die-cutting roller (210), and the second linear velocity is the linear velocity of the servo pressure roller (422); When it is determined that the linear speed difference is greater than a set threshold, controlling the telescopic push rod to press down the second roller body (620) with a first set pressure; When it is determined that the linear velocity difference is less than or equal to a set threshold, a reference pressure is calculated according to the linear velocity difference, and the telescopic push rod is controlled to press down the second roller body (620) with the reference pressure.

7. The circular die cutting automatic laminating device according to claim 6, characterized in that: A temperature sensor (430) is provided on the suspension base (420), and the temperature sensor (430) is used to detect a first temperature at the position of the preheating roller (421), a second temperature at the position of the servo pressure roller (422), and a third temperature at the position of the cooling roller (424); the multi-stage pressing mechanism (400) further includes a third control module, and the third control module is configured to perform feedback adjustment on the temperature of the preheating roller (421) according to the first temperature, and is also configured to perform feedback adjustment on the temperature of the cooling roller (424) according to the third temperature.

8. The circular die cutting automatic laminating device according to claim 7, characterized in that: The multi-stage pressing mechanism (400) further includes a fourth control module, the fourth control module being electrically connected to the laser rangefinder (900), the temperature sensor (430) and the servo motor (423), and the fourth control module being configured to control the servo motor (423) based on the thickness of the coil (101) detected by the laser rangefinder (900) and the second temperature.

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