Coiled material tension isolation device and vacuum coating apparatus

Abstract

The utility model relates to vacuum coating technology field discloses a kind of coiled material tension isolation device and vacuum coating equipment, and wherein, coiled material tension isolation device includes fixed bracket, transmission roller group, drive motor and monitoring unit, and wherein, transmission roller group is rotationally connected to fixed bracket, including the driving roller and press roll of parallel arrangement, coiled material is transmitted out fixed bracket between the gap of driving roller and press roll, drive motor is used to drive driving roller rotation, monitoring unit is monitored and is located the tension of coiled material upstream or downstream driving roller, and corresponding regulation and control drive motor's output speed.The utility model adds power action position in coiled material transmission path, and the tension state of coiled material is monitored respectively in the upstream and downstream of this position.In accordance with the speed of driving roller of monitoring result real-time adjustment, to realize tension isolation and sectional control, effectively shorten the delay between feedback signal and actual adjustment, improve the stability of coiled material tension.

Description

Technical Field

[0001] This utility model relates to the field of vacuum coating technology, specifically to a roll material tension isolation device. Furthermore, this utility model also relates to a vacuum coating apparatus incorporating the roll material tension isolation device. Background Technology

[0002] In vacuum coating equipment, the substrate (such as PET film) is typically transported within a vacuum chamber via a winding and unwinding mechanism. Due to the long winding path of the substrate within the vacuum chamber, tension instability or difficulty in precise control during transport can easily occur. Fluctuations in substrate tension directly affect the uniformity and adhesion of the coating layer, thereby reducing the quality of the coated product.

[0003] In existing technologies, substrate tension adjustment largely relies on feedback detection and speed adjustments of the winding and unwinding devices. However, when the winding length is too long, there is a certain delay between the feedback signal and the actual adjustment, making it difficult to respond to tension in a timely manner and achieve stable control. This delay effect is more pronounced in a vacuum environment, easily causing localized relaxation or excessive stretching of the substrate, thereby affecting the stable operation of the equipment and the coating effect. Utility Model Content

[0004] In view of this, the present invention provides a roll tension isolation device and a vacuum coating equipment to solve the problem of difficulty in timely response and stable control of tension.

[0005] In the first aspect, this utility model provides a fixed frame, a transmission roller group, a drive motor, and a monitoring unit; The drive roller assembly is rotatably connected to the fixed frame and includes a drive roller and a pressing roller arranged in parallel. The roll material is transmitted out of the fixed frame through the gap between the drive roller and the pressing roller. The drive motor is used to drive the drive roller to rotate; The monitoring unit is designed to monitor the tension of the roll material located upstream or downstream of the drive roller and adjust the output speed of the drive motor accordingly.

[0006] Therefore, this invention adds a power application point in the roll material transport path, and monitors the tension state of the roll material upstream and downstream of this point. Based on the monitoring results, the rotational speed of the drive roller is adjusted in real time, thereby achieving tension isolation and segmented control, effectively shortening the delay between the feedback signal and the actual adjustment, and improving the stability of the roll material tension.

[0007] Optionally, the two ends of the pressing roller are connected to swing arm assemblies, which are connected to the fixed frame and configured to drive the pressing roller to swing relative to the fixed frame, so as to adapt to various roll materials of different thicknesses by adjusting the gap between the pressing roller and the drive roller.

[0008] Optionally, the swing arm assembly includes a pair of first swing arms located inside the fixed frame. The two ends of the pressing roller are connected to the movable ends of the first swing arms. The fixed ends of the first swing arms are connected to a rotating shaft, which is rotatably connected to the fixed frame. The swing arm assembly also includes a power structure that drives the rotating shaft to rotate, so that when the rotating shaft is driven to rotate, the movable ends of the first swing arms can swing relative to the driving roller, thereby driving the pressing roller to move relative to the driving roller.

[0009] Optionally, the power structure includes at least one second swing arm located outside the fixed frame. The fixed end of the second swing arm is connected to the end of the rotating shaft, and the movable end of the second swing arm is connected to a power source that drives it to swing. Thus, when the power source drives the second swing arm to swing a certain amplitude, the first swing arm can swing the same amplitude accordingly.

[0010] Optionally, the power source includes at least one telescopic cylinder, the drive end of which is hinged to the movable end of the second swing arm, and the end of the telescopic cylinder away from the drive end is hinged to a fixed frame. By controlling the extension and retraction of the telescopic cylinder, a torque can be applied to the second swing arm, which will be transmitted to the first swing arm through the rotating shaft, thereby driving the pressing roller to swing.

[0011] Optionally, bearing seats are arranged opposite each other inside the fixed frame, and bearings are provided on the bearing seats. Rotary rods that rotate with the bearings are provided at both ends of the drive roller. By controlling the extension and retraction of the telescopic cylinder, torque can be applied to the second swing arm. This torque will be transmitted to the first swing arm through the rotating shaft, thereby driving the pressing roller to swing.

[0012] Optionally, the drive motor is located outside the fixed frame, and the drive end of the drive motor passes through the wall of the fixed frame and is connected to the rotating rod to apply torque to the rotating rod.

[0013] Optionally, the output end of the drive motor is tensioned with a synchronous belt to the rotating rod, so as to transmit torque to the rotating rod through the synchronous belt.

[0014] Optionally, the monitoring unit includes tension sensors located upstream and downstream of the drive roller and a controller communicatively connected to the tension sensors. The tension sensors are configured to monitor the tension of the roll material, and the controller is used to adjust the output speed of the drive motor accordingly.

[0015] Secondly, this embodiment also provides a vacuum coating apparatus including the roll tension isolation device described above. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a roll tension isolation device according to an embodiment of the present utility model; Figure 2 This is a schematic diagram of the swing arm assembly structure according to an embodiment of the present utility model; Figure 3 The drive motor and drive roller are embodiments of this utility model.

[0018] Explanation of reference numerals in the attached figures: 1. Fixed frame; 101. Bearing seat; 102. Bearing; 103. Synchronous belt; 104. Rotating rod; 2. Transmission roller assembly; 201. Drive roller; 202. Pressing roller; 3. Drive motor; 4. Swing arm assembly; 401. First swing arm; 402. Rotating shaft; 403. Second swing arm; 404. Telescopic cylinder. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] In this embodiment, reference Figure 1 The roll tension isolation device is used to receive the roll material output by the unwinding device and convey it to the rewinding device for winding into a finished product. In this embodiment, the roll material can be the aforementioned foil material, or other sheet or strip materials requiring winding processing. The roll tension isolation device includes a fixed frame 1 and a transmission roller group 2 rotatably connected to the fixed frame 1, used for guiding and conveying the roll material. The transmission roller group 2 includes a drive roller 201 and a pressing roller 202 arranged parallel to each other. The roll material passes sequentially through the gap between the drive roller 201 and the pressing roller 202, thereby increasing the friction between the roll material and the surface of the drive roller 201 under the pressing action, avoiding sliding friction caused by slippage, and ensuring that the conveying speed of the roll material is consistent with the rotational speed of the drive roller 201.

[0021] In addition, the roll tension isolation device also includes a drive motor 3 for rotating the drive roller 201, and a monitoring unit for real-time monitoring of the roll tension. The monitoring unit is located upstream or downstream of the drive roller 201, and can sense the tension state of the roll and adjust the output speed of the drive motor 3 accordingly.

[0022] In this embodiment, the upstream and downstream are defined according to the transmission direction of the roll material. That is, the upstream tension refers to the tension of the roll material being transmitted between the unwinding assembly and the roll material, while the downstream tension refers to the tension of the roll material being transmitted between the winding assembly and the roll material.

[0023] Specifically: When the monitoring unit detects excessive tension upstream of the drive roller 201, it indicates that the unwinding speed is lower than the transmission speed of the drive roller 201. In this case, the output speed of the drive motor 3 is reduced, causing the speed of the drive roller 201 to decrease accordingly, thereby reducing the speed difference and preventing excessive tension from causing the roll material to break. If the tension is insufficient, the speed of the drive motor 3 is increased accordingly to avoid the roll material from loosening. If the monitoring unit detects excessive tension downstream of the drive roller 201, it indicates that the winding speed is greater than the speed of the drive roller 201. In this case, the speed of the drive motor 3 needs to be increased to alleviate the tension; conversely, the motor speed is reduced to avoid excessive loosening of the roll material.

[0024] Therefore, this embodiment effectively divides the tension borne by the roll material into two segments by adding an independent power point in the middle of the roll material transport path. The monitoring unit adaptively adjusts the speed of the drive motor 3 based on the real-time monitored tension changes, thereby achieving precise control of the upstream and downstream tension, significantly shortening the delay between the feedback signal and the actual adjustment, improving the stability of the roll material tension, and ensuring stable operation of the equipment and the coating effect.

[0025] In some embodiments, reference Figure 2 and Figure 3 The two ends of the pressing roller 202 are connected to the fixed frame 1 through the swing arm assembly 4. The swing arm assembly 4 can drive the pressing roller 202 to swing relative to the fixed frame 1, thereby adjusting the position of the pressing roller 202 relative to the drive roller 201. This makes it easier for the operator to guide the roll material to abut against the drive roller 201 in the initial stage, and it can also adapt to roll materials of various thicknesses.

[0026] The pressing roller 202 can be configured to be lower than the highest point of the outer circumference of the drive roller 201 when it swings to the lowest position, so that the two can clamp thinner rolls to improve the adaptability of the device.

[0027] In some embodiments, the swing arm assembly 4 may include a pair of first swing arms 401 located inside the fixed frame 1. Both ends of the pressing roller 202 are rotatably connected to the movable ends of the first swing arms 401, while the fixed ends of the first swing arms 401 are connected to a rotating shaft 402. The rotating shaft 402 is rotatably connected to the fixed frame 1 such that when the rotating shaft 402 is driven to rotate, the movable ends of the first swing arms 401 can swing relative to the driving roller 201, thereby causing the pressing roller 202 to move relative to the driving roller 201.

[0028] In this embodiment, the swing arm assembly 4 further includes a power structure for driving the rotating shaft 402 to rotate, which has any suitable structural form, as shown in the reference. Figure 2 In the illustrated embodiment, the power structure includes a second swing arm 403 located outside the fixed frame 1. The fixed end of the second swing arm 403 is connected to the end of the rotating shaft 402, while its movable end is connected to a power source for driving its swing. Thus, when the power source drives the second swing arm 403 to swing a certain amplitude, the first swing arm 401 can swing correspondingly with the same amplitude. This is because both the first swing arm 401 and the second swing arm 403 are connected to the same rotating shaft 402. The rotating shaft 402, as the common connecting member for both, determines the swing amplitude of the two swing arms by its rotation angle. When the second swing arm 403 rotates around the rotating shaft 402 by a specific angle under the action of an external power source, since they are rigidly connected to the same rotating shaft 402, the rotating shaft 402 will also rotate by the same angle, thereby causing the first swing arm 401 to swing synchronously at the same angle internally. Therefore, when the relative positions of the pressing roller 202 and the drive roller 201 inside the fixed frame 1 cannot be clearly observed, the operator can infer their relative positions through the second swing arm 403, or precisely control their relative positions by manipulating the swing angle of the second swing arm 403.

[0029] In some embodiments, reference Figure 2 The power source may include a telescopic cylinder 404 hinged to the outside of the fixed frame 1. The drive end of each telescopic cylinder 404 is hinged to the movable end of the corresponding second swing arm 403. By controlling the extension and retraction of the telescopic cylinder 404, a torque can be applied to the second swing arm 403, which is then transmitted to the first swing arm 401 through the rotating shaft 402, thereby driving the pressing roller 202 to swing.

[0030] To drive both ends of the pressing roller 202, two second swing arms 403 can be provided and connected to two rotating shafts 402 respectively. Accordingly, two telescopic cylinders 404 are required and are hinged to the two second swing arms 403 respectively, so that torque can be applied to both ends of the pressing roller 202 to drive it to swing synchronously.

[0031] In this embodiment, the number of pressing rollers 202 can be adjusted according to actual application requirements. For example, when the diameter of the drive roller 201 is much larger than the diameter of the pressing roller 202, the number of pressing rollers 202 is usually increased to apply uniform clamping force at multiple locations on the roll material on the drive roller 201. This multi-point clamping design can improve the pressing effect and stability of the roll material.

[0032] The connection structure between the pressing roller 202 and the fixed frame 1 can take any suitable form. (Reference) Figure 2 and Figure 3 In the embodiment shown, bearing seats 101 are arranged opposite each other inside the fixed frame 1, and bearings 102 are mounted on the bearing seats 101. Rotating rods 104 are provided at both ends of the pressing roller 202. These rotating rods 104 are rotatably engaged with the corresponding bearings 102, so that the pressing roller 202 can be rotatably connected to the fixed frame 1.

[0033] Further, refer to Figure 3 In this embodiment, the bearing housing 101 includes a fixed base plate and a mounting bracket. The bottom end face of the fixed base plate can be connected to the bottom end face of the fixed bracket 1 by welding or other fixing methods. The mounting bracket is installed to the top end face of the fixed base plate, and the bearing 102 is installed at the mounting end of the mounting bracket.

[0034] Furthermore, the mounting bracket may include a support plate and a mounting plate. The mounting plate is located above the fixed base plate, and the support plate is supported between the fixed base plate and the mounting plate. The bearing seat 101 may be threadedly connected to the top surface of the mounting plate.

[0035] In some embodiments, reference Figure 2 The aforementioned drive motor 3 can be located outside the fixed frame 1, and the drive end of the drive motor 3 passes through the wall of the fixed frame 1 and is connected to the rotating rod 104 for transmission, so that the drive motor 3 can drive the rotating rod 104 to rotate and drive the roll material to move.

[0036] In some embodiments, reference Figure 3 The output end of the drive motor 3 can be directly or indirectly connected to the rotating rod 104. Specifically, a direct connection involves fixing the output end of the drive motor 3 directly to the rotating shaft 402, thereby applying torque to the rotating shaft 402 to drive its rotation. An indirect connection can be achieved using a synchronous belt 103, meaning that the output end of the drive motor 3 and the rotating rod 104 are tensioned together by a synchronous belt 103, thus transmitting the torque of the drive motor 3 to the rotating rod 104.

[0037] The end of the rotating rod 104 facing the drive motor 3 passes through the corresponding bearing seat 101, while the output end of the drive motor 3 is spaced apart from this part in one direction, thereby avoiding the part located here. This direction can be flexibly adjusted according to the specific application environment. For example, in this embodiment, this direction is the width direction of the fixing frame 1.

[0038] Furthermore, a turntable can be installed at both the output end of the drive motor 3 and the end of the rotating rod 104 extending to the outside of the bearing housing 101. This turntable is used to tension the synchronous belt 103. To prevent slippage between the turntable and the synchronous belt 103, teeth can be formed on the outer periphery of the turntable, and the synchronous belt 103 will mesh with the turntable accordingly.

[0039] In some embodiments, the monitoring unit includes tension sensors located upstream and downstream of the drive roller 201 and a controller communicatively connected to the tension sensors. The tension sensors are configured to monitor the tension of the roll material in the corresponding area, and the controller adjusts the output speed of the drive motor 3 based on the feedback signal from the tension sensors.

[0040] Specifically, the controller receives tension data transmitted in real time from the tension sensor and compares it with a preset ideal tension value to determine the tension of the roll material. In turn, it adjusts the speed of the drive motor 3 accordingly to ensure that the roll material remains under stable tension throughout the entire movement process. This effectively prevents the roll material from loosening, wrinkling, or breaking, and improves the system's operational stability and product quality.

[0041] Secondly, this embodiment also provides a vacuum coating apparatus, which includes the roll tension isolation device described above. The roll tension isolation device can be installed inside the vacuum coating chamber of the vacuum coating apparatus.

[0042] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A roll material tension isolation device, characterized in that, include: Fixture (1); A drive roller assembly (2) is rotatably connected to the fixed frame (1) and includes a drive roller (201) and a pressing roller (202) arranged in parallel. The roll material is transmitted out of the fixed frame (1) through the gap between the drive roller (201) and the pressing roller (202). A drive motor (3) is used to drive the drive roller (201) to rotate; The monitoring unit is configured to monitor the tension of the roll material located upstream or downstream of the drive roller (201) and adjust the output speed of the drive motor (3) accordingly.

2. The roll tension isolation device according to claim 1, characterized in that, The two ends of the pressing roller (202) are connected to a swing arm assembly (4), which is connected to the fixed frame (1) and is configured to drive the pressing roller (202) to swing relative to the fixed frame (1).

3. The roll tension isolation device according to claim 2, characterized in that, The swing arm assembly (4) includes a first swing arm (401) located inside the fixed frame (1) and arranged in pairs. The two ends of the pressing roller (202) are rotatably connected to the movable end of the first swing arm (401). The fixed end of the first swing arm (401) is connected to a rotating shaft (402), which is rotatably connected to the fixed frame (1). The swing arm assembly (4) further includes a power structure that drives the rotating shaft (402) to rotate.

4. The roll tension isolation device according to claim 3, characterized in that, The power structure includes at least one second swing arm (403) located outside the fixed frame (1), the fixed end of the second swing arm (403) is connected to the end of the rotating shaft (402), and the movable end of the second swing arm (403) is connected to a power source that drives it to swing.

5. The roll tension isolation device according to claim 4, characterized in that, The power source includes at least one telescopic cylinder (404), the drive end of which is hinged to the movable end of the second swing arm (403) in a corresponding manner, and the end of the telescopic cylinder (404) away from the drive end is hinged to the fixed frame (1).

6. The roll tension isolation device according to claim 1, characterized in that, The fixed frame (1) has bearing seats (101) arranged opposite each other, and bearings (102) are arranged on the bearing seats (101). The two ends of the drive roller (201) are provided with rotating rods (104) that rotate with the bearings (102).

7. The roll tension isolation device according to claim 6, characterized in that, The drive motor (3) is located outside the fixed frame (1), and the drive end of the drive motor (3) passes through the wall of the fixed frame (1) and is connected to the rotating rod (104) for transmission.

8. The roll tension isolation device according to claim 7, characterized in that, The output end of the drive motor (3) is tensioned with a synchronous belt (103) to the rotating rod (104).

9. The roll tension isolation device according to claim 1, characterized in that, The monitoring unit includes tension sensors located upstream and downstream of the drive roller (201) and a controller that is communicatively connected to the tension sensors. The tension sensors are configured to monitor the tension of the roll material, and the controller is used to adjust the output speed of the drive motor (3) accordingly.

10. A vacuum coating apparatus, characterized in that, Includes the roll tension isolation device as described in any one of claims 1-9.

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