MLCC flow coagulation machine material belt tension self-adapting regulation device

Abstract

The utility model relates to the field of casting machine, concretely relates to a MLCC casting machine material belt tension self -adaptation adjusting device, including casting machine body and the support plate of fixed installation respectively in the winding section and the unwinding section of casting machine body, the adjusting device still includes: the winding roller of rotation installation on the support plate, winding roller one end extends to the one side of support plate. The utility model discloses through the setting of PLC control box, tension control device and servo motor etc. component, realizes self -adaptation adjusting, need not manual intervention, can complete the adjustment in real time according to the actual tension change of material belt, can quickly restrain tension fluctuation, reduces the casting film thickness deviation due to tension fluctuation, reduces manual cost, avoids the hysteresis and error of manual regulation simultaneously, to improve the subsequent laminated precision.

Description

Technical Field

[0001] This utility model relates to the field of casting machines, and in particular to an adaptive tension adjustment device for MLCC casting machine strip. Background Technology

[0002] In the casting process of MLCC (multilayer ceramic capacitor) production, the casting machine is the core equipment for preparing the material tape (PET / PI base film). The stability of the material tape tension directly affects the product quality of subsequent lamination processes. Currently, the traditional tension control methods for casting machines mainly rely on manual adjustment or single sensor feedback control. Both of these methods have obvious drawbacks: manual adjustment has a slow response speed and cannot respond to tension fluctuations in real time; single sensor feedback control has signal transmission and processing delays, resulting in a lag in the overall control response. The aforementioned problems can cause frequent fluctuations in the tension of the tape during the casting process, resulting in uneven film thickness and severely affecting the consistency of subsequent lamination processes. Ultimately, this leads to unstable performance and reduced yield of MLCC products. Utility Model Content

[0003] In view of this, the purpose of this utility model is to propose an adaptive tension adjustment device for MLCC casting machine tape to solve the technical problems in the prior art.

[0004] To achieve the above objectives, this utility model provides an adaptive tension adjustment device for MLCC casting machine strip, comprising a casting machine body and support plates respectively fixedly installed on the winding section and unwinding section of the casting machine body. The adjustment device further includes: Rotate the winding roller mounted on the support plate, one end of the winding roller extending to one side of the support plate; A servo motor for driving the rotation of the winding roller is fixedly mounted on one side of the support plate extending out of the winding roller. A tension control device is fixedly installed on the support plate, and a drive shaft is rotatably installed inside the tension control device, with the top of the drive shaft in contact with the material belt; A PLC control box is fixedly installed on one side of the casting machine body, and the PLC control box is electrically connected to the servo motor and the tension control device respectively; A guide roller is fixed on the support plate, the guide roller is located on one side of the drive shaft, and the height of the guide roller is equal to that of the drive shaft.

[0005] Preferably, the tension control device includes a tension sensor and a tension controller. The tension sensor is mounted on the drive shaft, the tension controller is connected to the tension sensor, and the side of the tension sensor away from the drive shaft is fixed to the surface of the support plate.

[0006] Preferably, the tension sensor is a through-shaft strain tension sensor, which is inserted through the shaft of the drive shaft and fixedly attached to the support plate.

[0007] Preferably, the tension sensor and the tension controller are electrically connected.

[0008] Preferably, the tension controller and the PLC control box are connected by communication to transmit the tension deviation signal to the PLC control box.

[0009] Preferably, the adjustment device further includes at least one bracket fixed on the casting machine body, with grooves on both sides of the bracket, a slider slidably installed inside the groove, and a floating roller fixedly installed between the two sliders; An assembly hole is provided in the middle of the slider, and a guide rod is inserted through the assembly hole. The two ends of the guide rod are respectively fixedly installed on the upper and lower inner walls of the slide groove. A spring is fitted onto the lower end of the guide rod, with the top of the spring fixed to the bottom of the slider.

[0010] Preferably, the adjusting device further includes a floating plate, which is slidably mounted between the lower end surfaces of the two guide rods, and the bottom of the spring is fixed to the surface of the floating plate; An adjusting bolt is rotatably installed at the bottom center of the floating plate, and a positioning plate is threaded onto the surface of the adjusting bolt. Both ends of the positioning plate are fixedly installed on the inner wall of the lower end of the bracket.

[0011] Preferably, a bearing is installed between the interior of the floating plate and the top of the adjusting bolt, and the inner ring of the bearing is fixedly connected to the surface of the adjusting bolt, while the outer ring of the bearing is fixedly connected to the interior of the floating plate.

[0012] The beneficial effects of this utility model are as follows: The adaptive tension adjustment device for MLCC casting machine strip, which adopts this utility model, achieves adaptive adjustment through the setting of components such as PLC control box, tension control device and servo motor, without manual intervention. It can complete the adjustment in real time according to the actual tension change of the strip, which can quickly suppress tension fluctuations, reduce the casting film thickness deviation caused by tension fluctuations, reduce labor costs, and avoid the lag and error of manual adjustment, so as to improve the accuracy of subsequent lamination. By setting up a floating roller mechanism with a spring buffer structure, some tension fluctuations can be absorbed by the displacement of the floating roller when tension changes suddenly, playing a mechanical buffering role. Working in conjunction with the electrical control system, it further improves the stability and anti-interference ability of tension control. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a perspective view of the present utility model; Figure 2 for Figure 1 Enlarged view of the structure at point A in the middle; Figure 3 This is a schematic diagram of a partial structure of the floating roller, spring, and adjusting bolt of this utility model; Figure 4 This is a partial cross-sectional view of the floating roller, floating plate, and adjusting bolts of this utility model.

[0015] The diagram is marked as follows: 1. Casting machine body; 2. Support plate; 3. Winding roller; 4. Servo motor; 5. Tension control device; 6. Drive shaft; 7. PLC control box; 8. Guide roller; 9. Bracket; 901. Slide groove; 10. Slider; 11. Floating roller; 12. Guide rod; 13. Spring; 14. Floating plate; 15. Adjusting bolt; 16. Positioning plate. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0017] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0018] The first aspect of this utility model proposes an adaptive tension adjustment device for the tape in an MLCC casting machine, such as... Figure 1-4As shown, the device includes a casting machine body 1 and support plates 2 respectively fixedly installed on the winding section and unwinding section of the casting machine body 1. The adjustment device also includes: Rotate the winding roller 3 mounted on the support plate 2, with one end of the winding roller 3 extending to one side of the support plate 2; The servo motor 4 is used to drive the rotation of the winding roller 3. The servo motor 4 is fixedly installed on one side of the support plate 2 that extends out of the winding roller 3. A tension control device 5 is fixedly installed on the support plate 2. A drive shaft 6 is rotatably installed inside the tension control device 5. The top of the drive shaft 6 contacts the material belt to continuously detect the actual tension of the material belt. A PLC control box 7 is fixedly installed on one side of the casting machine body 1. The PLC control box 7 is electrically connected to the servo motor 4 and the tension control device 5 respectively. It should be noted that the PLC has a built-in PID control algorithm. After the PLC receives the tension deviation signal, it immediately starts the built-in PID control algorithm to process the tension deviation data and generate a control signal for adjusting the tension of the material strip. The PLC control box can be an S7-1200 type PLC with a built-in PID control module. The guide roller 8 is fixed on the support plate 2. The guide roller 8 is located on one side of the drive shaft 6, and the height of the guide roller 8 is equal to that of the drive shaft 6.

[0019] In this embodiment: the tension control device 5 includes a tension sensor and a tension controller. The tension sensor is mounted on the drive shaft 6, the tension controller is connected to the tension sensor, and the side of the tension sensor away from the drive shaft 6 is fixed to the surface of the support plate 2.

[0020] In this embodiment, the tension sensor is a through-shaft strain tension sensor, which is mounted on the shaft of the drive shaft 6 and fixedly attached to the support plate 2. It should be noted that the through-shaft strain tension sensor is fixedly installed to the drive shaft 6 via a diaphragm coupling, and the installation position of the through-shaft strain tension sensor is in full contact with the conveyor belt to prevent slippage.

[0021] In this embodiment, the tension sensor and the tension controller are electrically connected to achieve real-time transmission of tension detection data.

[0022] Based on the material characteristics of the PET film to be processed and the actual casting process requirements, the corresponding target tension value, such as 5N or 8N, is preset in the tension controller. The specific value needs to be determined by debugging in conjunction with the actual production parameters and used as the benchmark for tension control. Real-time acquisition: The through-shaft strain tension sensor is installed at the material strip contact position in the unwinding / rewinding section to continuously detect the actual tension of the PET film and transmit the analog signal to the tension controller. The sensor can continuously and accurately detect the actual tension value of the PET film during operation and transmit the detected analog signal to the tension controller in real time. PID adjustment: After receiving the deviation signal, the PLC control box 7 starts the PID algorithm. After receiving the actual tension signal, the tension controller compares the actual tension value with the preset target tension value, calculates the tension deviation between the two, and then transmits the calculated tension deviation data to the PLC. After receiving the tension deviation signal, the PLC immediately starts the built-in PID proportional-integral-derivative control algorithm to process the tension deviation data and generate a control signal for adjusting the tension of the conveyor belt. It should be noted that the PID parameters are existing technology and will not be described in detail here.

[0023] Based on the PID algorithm results, the PLC sends speed adjustment commands to the servo motors of the casting machine. When the actual tension value is greater than the target tension value (too high), the servo motor 4 reduces the speed of the winding roller 3, decreasing the tension on the material strip; when the actual tension value is less than the target tension value (too low), the servo motor 4 increases the speed of the winding roller 3, increasing the tension on the material strip. The response time of the entire adjustment process is less than 0.5 seconds, which can quickly suppress tension fluctuations and effectively avoid uneven distribution of the casting slurry caused by excessive stretching or loosening of the PET film. Furthermore, this invention achieves adaptive adjustment through "real-time feedback-dynamic correction" closed-loop control, eliminating the need for manual intervention. The system can adjust in real time according to the actual tension changes of the material strip, reducing labor costs and avoiding the lag and errors of manual adjustment.

[0024] In this embodiment, the tension controller and the PLC control box 7 are connected via a communication link to transmit the tension deviation signal to the PLC control box 7. It should be noted that the tension controller transmits the calculated tension deviation data to the PLC (Programmable Logic Controller) using a communication protocol compatible with the PLC (such as Modbus protocol, Profinet protocol, etc., the specific protocol type depending on the actual PLC model).

[0025] This adaptive adjustment further improves the accuracy of subsequent lamination. The stable strip thickness provides a consistent foundation for subsequent lamination processes, effectively improving the alignment accuracy of the lamination, and thus improving the yield and performance stability of MLCC products.

[0026] In this embodiment, the adjustment device also includes at least one bracket 9 fixed on the casting machine body 1. The bracket 9 has a sliding groove 901 on both sides. A slider 10 is slidably installed inside the sliding groove 901. A floating roller 11 is fixedly installed between the two sliders 10. It should be noted that the floating roller 11 is located below the drive shaft 6 and the guide roller 8 and is used to adjust the tension of the material strip.

[0027] An assembly hole is provided in the middle of the slider 10, and a guide rod 12 is inserted through the assembly hole. The two ends of the guide rod 12 are respectively fixedly installed on the upper and lower inner walls of the slide groove 901. A spring 13 is fitted onto the lower end of the guide rod 12, with its top fixed to the bottom of the slider 10. The spring 13 is used to convert changes in the material belt tension into displacement of the floating roller 11, thus helping to buffer tension fluctuations. To improve the performance and yield of MLCC products, in the tension control process of PLC control box 7, tension control device 5 and servo motor 4, before the PLC responds and controls the material belt to adjust the tension, the material belt passes through the bottom of floating roller 11. When the tension of the material belt increases, the floating roller 11 moves upward to stretch the spring 13, and when the tension of the material belt decreases, the spring 13 drives the floating roller 11 to move downward. This plays an auxiliary buffering role against excessive tension and works in conjunction with the electrical control system to further improve the stability and anti-interference ability of tension control. During implementation, firstly, a primary buffer (mechanical) is used. When the tension change is ≤3N, the floating roller absorbs the fluctuation through the compression / tension spring (the ratio of displacement to tension change is 1mm:2N), with a response time ≤0.1s, to avoid small fluctuations triggering electrical adjustment. Secondly, the secondary adjustment (electrical) is as follows: when the tension change is greater than 3N or the mechanical buffer reaches its limit (floating roller displacement ±20mm), the tension sensor transmits the deviation signal to the PLC, which starts the PID to adjust the servo motor speed, achieving precise correction within 0.5s; Collaborative verification: A 10N instantaneous impact was applied to the material strip during its operation using a tension tester. The mechanical buffer absorbed a 4N fluctuation, and the electrical system corrected for a 6N fluctuation. The final steady-state error was ≤0.3N, which meets the requirements of the casting process.

[0028] In this embodiment: the adjustment device further includes a floating plate 14, which is slidably mounted between the lower end surfaces of the two guide rods 12, and the bottom of the spring 13 is fixed to the surface of the floating plate 14; An adjusting bolt 15 is rotatably mounted at the bottom center of the floating plate 14. A positioning plate 16 is threaded onto the surface of the adjusting bolt 15, and both ends of the positioning plate 16 are fixedly mounted on the inner wall of the lower end of the bracket 9. It should be noted that the preload of the spring 13 is periodically calibrated to ensure the mechanical buffering effect. When it is necessary to change the preload of the spring 13 to achieve the tension value setting, the adjusting bolt 15 is rotated, causing it to move up and down in the middle of the positioning plate 16. This causes the adjusting bolt 15 to move up and down the floating plate 14, which is rotatably mounted at the top via a bearing, thereby changing the preload of the spring 13 to achieve the tension value setting. The spring 13 is a φ3mm×20mm×50mm cylindrical helical compression spring (material 60Si2Mn, stiffness 5N / mm). Its preload needs to be calibrated monthly. The calibration tool is an HT-100 digital display force gauge (range 0-100N, accuracy ±0.2N), which must be verified by a metrology institution before calibration.

[0029] In this embodiment, a bearing is installed between the interior of the floating plate 14 and the top of the adjusting bolt 15. The inner ring of the bearing is fixedly connected to the surface of the adjusting bolt 15, and the outer ring of the bearing is fixedly connected to the interior of the floating plate 14. The bearing arrangement allows the adjusting bolt 15 to rotate freely at the bottom of the floating plate 14, thereby causing the floating plate 14 to move up and down as the adjusting bolt 15 rotates and rises.

[0030] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0031] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A tape tension adaptive adjustment device for an MLCC casting machine, comprising a casting machine body (1) and support plates (2) respectively fixedly installed in the winding section and the unwinding section of the casting machine body (1), characterized in that, The regulating device further includes: Rotate the winding roller (3) mounted on the support plate (2), one end of the winding roller (3) extending to one side of the support plate (2); A servo motor (4) for driving the rotation of the winding roller (3) is fixedly mounted on one side of the support plate (2) extending out of the winding roller (3); A tension control device (5) is fixedly installed on the support plate (2). A drive shaft (6) is rotatably installed inside the tension control device (5). The top of the drive shaft (6) is in contact with the material belt. A PLC control box (7) is fixedly installed on one side of the casting machine body (1). The PLC control box (7) is electrically connected to the servo motor (4) and the tension control device (5) respectively. A guide roller (8) is fixed on the support plate (2). The guide roller (8) is located on one side of the drive shaft (6), and the guide roller (8) is at the same height as the drive shaft (6).

2. The adaptive tension adjustment device for MLCC casting machine tape according to claim 1, characterized in that, The tension control device (5) includes a tension sensor and a tension controller. The tension sensor is mounted on the drive shaft (6), and the tension controller is connected to the tension sensor. The side of the tension sensor away from the drive shaft (6) is fixed to the surface of the support plate (2).

3. The adaptive tension adjustment device for MLCC casting machine tape according to claim 2, characterized in that, The tension sensor is a through-shaft strain tension sensor, which is installed on the shaft of the drive shaft (6) and fixedly attached to the support plate (2).

4. The adaptive tension adjustment device for MLCC casting machine tape according to claim 3, characterized in that, The tension sensor and the tension controller are electrically connected.

5. The adaptive tension adjustment device for MLCC casting machine tape according to claim 4, characterized in that, The tension controller is connected to the PLC control box (7) via a communication connection, which is used to transmit the tension deviation signal to the PLC control box (7).

6. The adaptive tension adjustment device for MLCC casting machine strip according to claim 1, characterized in that, The adjustment device also includes at least one bracket (9) fixed on the casting machine body (1). The bracket (9) has a sliding groove (901) on both sides. A slider (10) is slidably installed inside the sliding groove (901). A floating roller (11) is fixedly installed between the two sliders (10). An assembly hole is opened in the middle of the slider (10), and a guide rod (12) is inserted through the assembly hole. The two ends of the guide rod (12) are respectively fixedly installed on the upper and lower inner walls of the slide groove (901). A spring (13) is fitted onto the lower end of the guide rod (12), and the top of the spring (13) is fixed to the bottom of the slider (10).

7. The adaptive tension adjustment device for MLCC casting machine tape according to claim 6, characterized in that, The adjustment device also includes a floating plate (14), which is slidably mounted between the lower end surfaces of the two guide rods (12), and the bottom of the spring (13) is fixed to the surface of the floating plate (14); An adjusting bolt (15) is rotatably installed at the bottom center of the floating plate (14). A positioning plate (16) is threaded onto the surface of the adjusting bolt (15). Both ends of the positioning plate (16) are fixedly installed on the inner wall of the lower end of the bracket (9).

8. The adaptive tension adjustment device for MLCC casting machine tape according to claim 7, characterized in that, A bearing is installed between the interior of the floating plate (14) and the top of the adjusting bolt (15), and the inner ring of the bearing is fixedly connected to the surface of the adjusting bolt (15), while the outer ring of the bearing is fixedly connected to the interior of the floating plate (14).

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