A winding device for antistatic decorative rolls

Abstract

This utility model discloses a winding device for antistatic decorative roll material, comprising: a mounting frame, two sets of connecting pipes fixedly mounted on the upper surface of the mounting frame, an antistatic decorative roll material winding column rotatably mounted between the two sets of connecting pipes, connecting blocks slidably assembled inside each set of connecting pipes, and an unwinding column rotatably assembled between the two sets of connecting blocks. A damping force adjustment mechanism is fixedly mounted on the upper surface of each connecting block, which slides through a guide opening. This application, through the design of a pressure sensor and a damping force adjustment mechanism, ensures that the material maintains appropriate tension during transmission, avoiding slackness, wrinkles, or breakage, thereby guaranteeing the continuity and stability of the production process.

Description

Technical Field

[0001] This utility model relates to the field of production equipment technology, specifically to a winding device for antistatic decorative rolls. Background Technology

[0002] Antistatic decorative rolls are decorative materials with permanent antistatic properties, mainly used in places requiring antistatic protection, such as program-controlled machine rooms, computer rooms, and clean rooms in the telecommunications and electronics industries. Made primarily of PVC resin using a special processing technique, they offer stable and long-lasting antistatic effects, unaffected by temperature and humidity.

[0003] For example, Chinese patent CN219652300U discloses a roll-to-roll rewinding machine, including a rewinder; both ends of the take-up roller are coaxially fixed with connecting shafts, and the connecting shafts are detachably mounted on a vertical rod through a connecting assembly; it includes a fixed seat connected to the vertical rod, and a detachable clamping block is installed at the notch of the fixed seat; a lower clamping groove is opened at the notch of the fixed seat, and an upper clamping groove is opened on the bottom surface of the clamping block; the connecting shaft is rotatably mounted between the lower clamping groove and the upper clamping groove; through the connecting assembly: when it is necessary to disassemble the take-up roller, loosening the locking bolt allows the end of the locking bolt to disengage from the slot, thereby releasing the restriction of the locking bolt on the insert rod; under the action of the spring, the clamping block can be driven upward, and the restriction of the clamping block on the connecting shaft is released, so that the connecting shaft and the take-up roller can be disassembled; this design facilitates the quick disassembly of the take-up roller and ensures the efficiency of the take-up roller replacement.

[0004] However, the aforementioned roll-to-roll rewinding machine lacks a real-time tension monitoring and dynamic adjustment mechanism during the unwinding and transmission of antistatic decorative rolls, resulting in large tension fluctuations and difficulty in maintaining stable tension. Summary of the Invention

[0005] The purpose of this invention is to provide a winding device for antistatic decorative rolls to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A winding device for antistatic decorative roll material includes: a mounting frame, on the upper surface of which two sets of connecting pipes are fixedly mounted, and an antistatic decorative roll material winding column is rotatably mounted between the two sets of connecting pipes. A connecting block is slidably assembled inside each of the two sets of connecting pipes, and an unwinding column is rotatably assembled between the two sets of connecting blocks. The upper surface of the connecting block slides out from the guide opening and is fixedly mounted with a damping force adjustment mechanism.

[0008] Preferably, a winding drive motor is fixedly installed at one end of the mounting frame, and the output shaft of the winding drive motor passes through the connecting pipe and is fixedly connected to the antistatic decorative roll winding column.

[0009] Preferably, a pressure sensor is fixedly installed inside the connecting pipe, and a limiting post is slidably inserted inside the pressure sensor. One end of the limiting post is fixedly connected to the connecting block, and a first spring is fitted around the outer periphery of the limiting post. The two ends of the first spring abut against the pressure detection end of the pressure sensor and the connecting block, respectively.

[0010] Preferably, the pressure sensor is electrically connected to the controller, and the controller is electrically connected to the damping force adjustment mechanism.

[0011] Preferably, the damping force adjustment mechanism includes a T-shaped tube, which is fixedly installed on the upper surface of the connecting block and slidably assembled in the guide opening. A top pressure block is slidably assembled inside the cross cylinder of the T-shaped tube. The top pressure block can press against the end face of the damping disc. The damping disc is fixedly fitted on both ends of the unwinding column to adjust the damping force of the unwinding column on the unwinding of the antistatic decorative roll material.

[0012] Preferably, one end of the top pressure block is connected to a second spring, and the other end of the second spring is connected to a transmission disc. The transmission disc is slidably assembled inside the T-shaped tube. Guide sliders are fixedly provided at the upper and lower ends of the outer periphery of the transmission disc. The guide sliders are slidably assembled in the guide grooves opened on the inner wall of the T-shaped tube.

[0013] Preferably, an expansion plate is fixedly installed at one end of the T-shaped tube, and an adjustment motor is fixedly installed on the end face of the expansion plate. The output shaft of the adjustment motor is fixedly connected to a threaded rod, which is threadedly connected to the transmission plate and passes through the second spring, so that the adjustment motor drives the transmission plate to compress the second spring through the threaded rod, and then pushes the top pressure block against the end face of the damping plate through the second spring.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. Achieve precise closed-loop tension control:

[0016] Through a closed-loop mechanism of "pressure sensor detection - controller PID algorithm calculation - damping force adjustment mechanism execution", the damping force of the unwinding column is dynamically adjusted, which significantly reduces the tension fluctuation range and ensures the stability of the coil tension.

[0017] 2. Significantly improve coating process quality:

[0018] Optimized tension control precision ensures that the roll material remains uniformly tensioned during transport, preventing slack, wrinkles, or breakage, thereby significantly reducing the coating defect rate from the level of traditional processes and improving product consistency.

[0019] 3. Dynamic compensation mechanism enhances adaptability:

[0020] By introducing reel radius compensation and friction coefficient compensation algorithms, the tension calculation model is corrected in real time based on the changes in reel radius and fluctuations in friction coefficient during unwinding, thereby further improving the system's adaptability to different working conditions.

[0021] 4. Ensure production continuity and stability:

[0022] Automated tension adjustment eliminates the need for manual intervention, ensuring that materials maintain appropriate tension throughout the transmission process, reducing downtime for adjustments due to abnormal tension, and improving production efficiency and equipment stability. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the antistatic decorative roll material winding device of this utility model;

[0024] Figure 2 This is a schematic diagram of the pressure sensor and connecting block of this utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the T-shaped tube and the top pressure block of this utility model;

[0026] Figure 4 This is a schematic diagram of the damping force adjustment mechanism of this utility model.

[0027] In the diagram: 1. Mounting frame; 101. Antistatic decorative roll winding column; 102. Unwinding column; 103. Damping disc; 104. Winding drive motor; 105. Guide port; 106. Connecting block; 107. Pressure sensor; 108. Limiting column; 109. First spring; 2. Damping force adjustment mechanism; 201. T-tube; 202. Top pressure block; 203. Transmission disc; 204. Second spring; 205. Expansion disc; 206. Adjusting motor; 207. Threaded rod; 208. Guide groove; 209. Guide slider; 3. Connecting pipe. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] like Figures 1-2As shown, this embodiment provides a winding device for antistatic decorative roll material, including: a mounting frame 1, two sets of connecting pipes 3 are fixedly mounted on the upper surface of the mounting frame 1, an antistatic decorative roll material winding column 101 is rotatably mounted between the two sets of connecting pipes 3, connecting blocks 106 are slidably assembled inside each set of connecting pipes 3, and an unwinding column 102 is rotatably assembled between the two sets of connecting blocks 106. The upper surface of the connecting blocks 106 slides out from the guide opening 105 and is fixedly mounted with a damping force adjustment mechanism 2. A winding drive motor 104 is fixedly mounted at one end of the mounting frame 1, and the output shaft of the winding drive motor 104 passes through the connecting pipes 3 and is fixedly connected to the antistatic decorative roll material winding column 101. A pressure sensor 107 is fixedly installed inside the connecting pipe 3. A limiting post 108 slides through the pressure sensor 107. One end of the limiting post 108 is fixedly connected to the connecting block 106. A first spring 109 is fitted around the outer periphery of the limiting post 108. The two ends of the first spring 109 abut against the pressure detection end of the pressure sensor 107 and the connecting block 106, respectively. The signal transmitting end of the pressure sensor 107 is connected to the signal receiving end of the controller. The control output end of the controller is electrically connected to the electrical control end of the damping force adjustment mechanism 2. The pressure sensor 107 and the controller are model PT4624 and S7-200SMART, respectively.

[0030] Through the design of the antistatic decorative roll winding column 101, unwinding column 102, damping disc 103, winding drive motor 104, connecting block 106, first spring 109, pressure sensor 107, and damping force adjustment mechanism 2, in the roll-to-roll production process, such as the production of antistatic decorative rolls, it is necessary to continuously transfer the antistatic decorative roll winding column 101 from the unwinding column 102. During this process, the winding drive motor 104 can be activated to drive the antistatic decorative roll winding column 101 to pull the antistatic decorative roll on the outer surface of the unwinding column 102, causing it to unwind. The pulled antistatic decorative roll will also pull the unwinding column 102 along with it. The unwinding column 102 can drive the connecting blocks 106 at both ends to slide to one end within the connecting tube 3. During the sliding process, the connecting blocks 106 will cause the limiting post 108, which is fixedly installed at one end, to slide into the pressure sensor 107. In this process, the distance between the connecting blocks 106 and the pressure sensor 107 will be reduced, thereby allowing the connecting blocks 106 to compress the first spring 109 fitted on the outer surface of the limiting post 108 and press it against one end of the pressure sensor 107 through the spring thrust. The pressure sensor 107 will convert the compression force F of the first spring 109 into a 4-20mA current signal S. The two satisfy a linear relationship: F=16S−4×Fmax

[0031] Where: Fmax is the full-scale pressure of the sensor (unit: N).

[0032] S represents the actual output current (unit: mA).

[0033] Scroll mechanical equilibrium equations

[0034] When the roll material wraps around the unwinding post 102 at an angle θ, the relationship between the radial pressure F and the roll tension T is: F = 2Tsin(2θ)

[0035] in:

[0036] θ is the wrap angle of the roll material (unit: radians).

[0037] T represents the tension of the roll material (unit: N).

[0038] Mathematical calculation process of the controller

[0039] Step 1: Convert the current signal into a pressure value

[0040] The controller first substitutes the 4-20mA current S output by the sensor into the formula: F = 16S − 4 × Fmax. For example, when S = 12mA and Fmax = 500N: F = 1612 − 4 × 500 = 250N.

[0041] Step 2: Convert the pressure value to the tension value. Substitute the calculated F into the mechanical equilibrium equation and solve for the tension T: T = 2sin(2θ)F. Assuming the wrap angle θ = 180∘ (i.e., sin(θ / 2) = 1), then: T = 2 × 1250 = 125 N;

[0042] Step 3: Combining the formula and real-time calculation, the above two steps are combined to obtain the formula for directly calculating the tension T from the current signal S: T=16S−4×Fmax×2sin(2θ)1. The controller performs this calculation every 10ms to achieve real-time monitoring of tension.

[0043] If the detected tension signal is too small, the controller can control the damping force adjustment mechanism 2 to contact one end of the damping disk 103 fixedly installed at one end of the antistatic decorative roll winding column 101, thereby increasing the damping force, i.e. tension, during the unwinding process of the unwinding column 102. If the detected tension signal is too large, the controller can control the damping force adjustment mechanism 2 to pull back and reduce the pressure between it and the damping disk 103, thereby reducing the damping force, i.e. tension, during the unwinding process of the unwinding column 102. This ensures that the material maintains appropriate tension during transmission, avoiding loosening, wrinkling, or breakage, thus ensuring the continuity and stability of the production process.

[0044] Reel radius compensation

[0045] As the roll material is unwound, the effective radius R of the unwinding column 102 gradually decreases and needs to be dynamically corrected: T = 16S−4×Fmax×2sin(2θ)R where R can be calculated by accumulating encoder data or material length.

[0046] Friction coefficient compensation

[0047] When the friction coefficient μ between the roll material and the roller surface changes, a correction coefficient Kμ needs to be introduced: T=16S−4×Fmax×2sin(2θ)R×KμKμ can be obtained by system identification or table lookup.

[0048] like Figures 3-4 As shown, the damping force adjustment mechanism 2 includes a T-shaped tube 201, which is fixedly installed on the upper surface of the connecting block 106 and slidably fitted inside the guide opening 105. A top pressure block 202 is slidably fitted inside the cross tube of the T-shaped tube 201. The top pressure block 202 can press against the end face of the damping disc 103. The damping disc 103 is fixedly fitted onto both ends of the unwinding column 102 to adjust the damping force of the unwinding column 102 on the unwinding of the antistatic decorative roll material. One end of the top pressure block 202 is connected to a second spring 204, and the other end of the second spring 204 is connected to a transmission disc 203. The transmission disc 203 is slidably fitted inside the T-shaped tube 201. Guide sliders 209 are fixedly provided at both the upper and lower ends of the outer periphery of the transmission disc 203. The guide sliders 209 are slidably fitted into the guide grooves 208 opened on the inner wall of the T-shaped tube 201. An expansion plate 205 is fixedly installed at one end of the T-shaped tube 201. An adjusting motor 206 is fixedly installed on the end face of the expansion plate 205. A threaded rod 207 is fixedly connected to the output shaft of the adjusting motor 206. The threaded rod 207 is threadedly connected to the transmission plate 203 and passes through the second spring 204, so that the adjusting motor 206 drives the transmission plate 203 to compress the second spring 204 through the threaded rod 207, and then pushes the top pressure block 202 against the end face of the damping plate 103 through the second spring 204.

[0049] By adjusting the design of the motor 206, threaded rod 207, transmission disc 203, second spring 204, top pressure block 202, and T-tube 201, when the tension signal detected by the controller is too small, the controller can control the adjusting motor 206 to drive the threaded rod 207 to rotate forward. The forward-rotating threaded rod 207 can then drive the transmission disc 203 to slide to one end inside the T-tube 201. This allows the transmission disc 203 to push the second spring 204, which is fixedly connected to the top pressure block 202. The compressed second spring 204 can then push the top pressure block 202 with greater elasticity, allowing the top pressure block 202 to contact one end of the damping disc 103 with a greater thrust. This increases the damping force, i.e., the tension, during the unwinding process of the unwinding column 102.

[0050] If the detected tension signal is too large, the controller can control the adjusting motor 206 to drive the threaded rod 207 to reverse. The reversed threaded rod 207 can then pull the transmission disc 203 back, thereby increasing the distance between the transmission disc 203 and the top pressure block 202. This reduces the spring force exerted by the second spring 204 on the top pressure block 202, and consequently reduces the pressure between the top pressure block 202 and the damping disc 103. This reduces the damping force, i.e., tension, during the unwinding process of the unwinding column 102. By comparing the detected tension value with the set value in real time, the controller dynamically adjusts the spring compression using a PID algorithm, constructing a "detection-calculation-adjustment" closed-loop control mechanism. This can significantly reduce the tension fluctuation amplitude, greatly reduce the coating defect rate from the traditional process level, and achieve dual optimization of tension control accuracy and coating quality.

[0051] Working steps of tension closed-loop control of antistatic decorative roll material winding device

[0052] 1. Unwinding and tension generation:

[0053] In roll-to-roll production, the start-up drive motor 104 drives the antistatic decorative roll winding column 101 to rotate, pulling the roll material on the unwinding column 102 to unwind. The tension of the roll material causes the unwinding column 102 to move, causing the connecting blocks 106 at both ends to slide within the connecting tube 3, pushing the limiting column 108 to compress the first spring 109 and press against the pressure sensor 107.

[0054] 2. Tension signal detection and transmission:

[0055] The pressure sensor 107 converts physical pressure into a standard electrical signal of 4-20mA and transmits it to the controller. The signal strength corresponds to the real-time tension value of the roll material.

[0056] 3. Closed-loop control logic – when tension is insufficient:

[0057] When the controller detects that the tension signal is lower than the set value, it controls the regulating motor 206 to rotate forward, driving the threaded rod 207 to rotate.

[0058] The threaded rod 207 drives the transmission disc 203 to slide axially within the T-shaped tube 201, compressing the second spring 204.

[0059] The compressed second spring 204 pushes the top pressure block 202 to increase the resistance to the damping disc 103, thereby increasing the damping force of the unwinding column 102 and thus increasing the tension of the roll material.

[0060] 4. Closed-loop control logic – when tension is too high:

[0061] If the tension signal exceeds the set value, the controller controls the regulating motor 206 to reverse, and the threaded rod 207 drives the transmission disc 203 to reset.

[0062] As the distance between the transmission disc 203 and the top pressure block 202 increases, the spring force of the second spring 204 decreases, the pressure of the top pressure block 202 on the damping disc 103 decreases, the damping force of the unwinding column 102 decreases, and the tension of the roll material decreases accordingly.

[0063] 5. Dynamic optimization of PID algorithm:

[0064] The controller compares the detected tension value with the set value in real time using a PID algorithm, and dynamically adjusts the compression of the second spring 204 to form a closed-loop control mechanism of "detection-calculation-adjustment" to continuously optimize tension stability.

[0065] In summary, this device ensures that materials maintain appropriate tension during transport, preventing slackness, wrinkles, or breakage, thereby guaranteeing the continuity and stability of the production process.

[0066] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A winding device for antistatic decorative roll material, characterized in that, include: The mounting frame has two sets of connecting pipes fixedly installed on its upper surface. An antistatic decorative roll winding column is rotatably installed between the two sets of connecting pipes. A connecting block is slidably assembled inside each of the two sets of connecting pipes. An unwinding column is rotatably assembled between the two sets of connecting blocks. The upper surface of the connecting block slides out from the guide opening and is fixedly installed with a damping force adjustment mechanism.

2. The winding device according to claim 1, characterized in that: A winding drive motor is fixedly installed at one end of the mounting frame, and the output shaft of the winding drive motor passes through the connecting pipe and is fixedly connected to the antistatic decorative roll winding column.

3. The winding device according to claim 1, characterized in that: A pressure sensor is fixedly installed inside the connecting pipe. A limiting post slides through the pressure sensor. One end of the limiting post is fixedly connected to the connecting block. A first spring is fitted around the outer periphery of the limiting post. The two ends of the first spring abut against the pressure detection end of the pressure sensor and the connecting block, respectively.

4. The winding device according to claim 3, characterized in that: The pressure sensor is electrically connected to the controller, and the controller is electrically connected to the damping force adjustment mechanism.

5. The winding device according to claim 4, characterized in that: The damping force adjustment mechanism includes a T-shaped tube, which is fixedly installed on the upper surface of the connecting block and slidably assembled in the guide opening. A top pressure block is slidably assembled inside the cross tube of the T-shaped tube. The top pressure block can press against the end face of the damping disc. The damping disc is fixedly fitted on both ends of the unwinding column to adjust the damping force of the unwinding column on the unwinding of the antistatic decorative roll material.

6. The winding device according to claim 5, characterized in that: One end of the top pressure block is connected to a second spring, and the other end of the second spring is connected to a transmission disc. The transmission disc is slidably assembled inside the T-shaped tube. Guide sliders are fixedly provided at the upper and lower ends of the outer periphery of the transmission disc. The guide sliders are slidably assembled in the guide grooves opened on the inner wall of the T-shaped tube.

7. The winding device according to claim 5, characterized in that: An expansion plate is fixedly installed at one end of the T-shaped tube, and an adjustment motor is fixedly installed on the end face of the expansion plate. The output shaft of the adjustment motor is fixedly connected to a threaded rod, which is threadedly connected to the transmission plate and passes through the second spring, so that the adjustment motor drives the transmission plate to compress the second spring through the threaded rod, and then pushes the top pressure block against the end face of the damping plate through the second spring.

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